A core making machine for manhole cover production

Abstract

The embodiment of the present disclosure relates to the technical field of well lid sand box moulding, and an embodiment of the present disclosure provides a core making machine for well lid production, which comprises a base body having an axial direction and a radial direction; a first sliding part is slidably arranged on the base body, and the first sliding part is arranged in a plurality of circumferential rows; a first side box and a second side box are arranged on the two sides of the first sliding part respectively, and the first side box and the second side box adjacent to each other are used for mould closing, wherein the first side box and the second side box have at least a no-core closing state and an opening state after the first sliding part slides, when the first side box and the second side box are in the no-core closing state, the plurality of first sliding parts slide and gather, and when the first side box and the second side box are in the opening state, the plurality of first sliding parts slide away from each other; a sand shooting part is movably arranged above the first sliding part and can shoot sand between the first side box and the second side box after moving. Through the above technical scheme, the technical problem of low efficiency of the core making machine in the prior art for processing and manufacturing sand cores is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of manhole cover sand box mold processing technology, and more specifically, to a core-making machine for manhole cover production. Background Technology

[0002] In manhole cover casting, sand cores are crucial for shaping the internal structure of the manhole cover, and their production efficiency directly determines the production progress. Currently, sand core production in the industry relies on traditional core-making machines with manual assistance, requiring processes such as sand filling, compaction, and demolding. However, traditional equipment is inefficient. Traditional core-making machines fill sand in a single direction, which easily leads to uneven distribution, and can only process one sand core at a time, resulting in low automation and thus limiting production efficiency. Therefore, core-making equipment that improves sand core production efficiency is needed. Summary of the Invention

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide a core-making machine for manhole cover production, which solves the technical problem of low efficiency in processing sand cores by existing core-making machines.

[0004] According to one aspect, at least one embodiment of this disclosure provides a core-making machine for manhole cover production, comprising:

[0005] A matrix having axial and radial dimensions;

[0006] A first sliding member is slidably disposed on the base along the radial direction of the base, and the first sliding member is arranged in a plurality of circumferential circles;

[0007] The first side box and the second side box are respectively disposed on both sides of the first sliding member, and on two adjacent first sliding members, the first side box and the second side box that are close to each other are used for mold closing. After the first sliding member slides, the first side box and the second side box have at least a mold core-free closed state and an open state. When the mold core-free closed state is in the mold core-free closed state, a number of the first sliding members slide and gather together, so that the first side box and the second side box abut against each other. When the open state is in the mold opening state, a number of the first sliding members slide away, so that the first side box and the second side box separate.

[0008] A sand-shooting component is movably disposed above the first sliding component and configured to shoot sand between the first side box and the second side box after being moved.

[0009] For example, a core-making machine for manhole cover production provided in at least one embodiment of this disclosure further includes:

[0010] The second sliding member is slidably disposed on the base along the radial direction of the base. The second sliding member is arranged in a plurality of circumferentially and is slidably located between two adjacent first sliding members.

[0011] A mold component is provided on each of the second sliding components, and the mold component is configured to move with the second sliding component and can move between the first side box and the second side box;

[0012] The first side box and the second side box are in a mold core closed box state. When in the mold core closed box state, the mold component moves between the first side box and the second side box, so that the first side box and the second side box respectively form the first side sand mold and the second side sand mold. When the first side box and the second side box are in a mold coreless closed box state, the first side sand mold and the second side sand mold are used to close the mold to form the sand core.

[0013] For example, a core-making machine for manhole cover production provided in at least one embodiment of this disclosure further includes:

[0014] A first driving component is disposed on one side of the base and is used to drive a plurality of the first sliding members to slide closer together.

[0015] A first elastic reset member, one end of which acts on the first sliding member and the other end of which acts on the base, is used to provide a force that moves the first sliding members away from each other.

[0016] For example, a core-making machine for manhole cover production provided in at least one embodiment of this disclosure further includes:

[0017] A second driving component is disposed on one side of the base and is used to drive a plurality of second sliding members to slide closer together;

[0018] The second elastic reset member has one end acting on the second sliding member and the other end acting on the base, and is used to provide a force that moves the second sliding members away from each other.

[0019] For example, at least one embodiment of this disclosure provides a core-making machine for manhole cover production, wherein the first drive assembly includes:

[0020] The first pusher is vertically movable and has several circumferentially arranged first push surfaces. The first sliding member has a first push surface, and the first push surface abuts against the first push surface, which is used to change the first side box and the second side box from an open state to a closed state with mold core or a closed state without mold core.

[0021] A first linear drive unit is used to drive the first pusher to move up and down.

[0022] For example, at least one embodiment of this disclosure provides a core-making machine for manhole cover production, wherein the second drive assembly includes:

[0023] The second pusher is vertically movable and has several circumferentially arranged second push surfaces. The second sliding member has a second push surface, and the second push surface abuts against the second push surface, for pushing the mold part between the first side box and the second side box.

[0024] The second linear drive is used to drive the second pusher to move up and down.

[0025] For example, at least one embodiment of this disclosure provides a core-making machine for producing manhole covers, which further includes a receiving plate. The receiving plate is vertically and movably disposed below the first sliding member and has a plurality of circumferentially arranged receiving portions. The receiving portions can move between two adjacent first sliding members.

[0026] For example, at least one embodiment of this disclosure provides a core-making machine for manhole cover production, wherein the axial direction of the base is vertical, and both the first side box and the second side box are rotatably mounted on the first sliding member, and further includes:

[0027] The third elastic reset member has one end acting on the first sliding member and the other end acting on the first side box, and is used to provide a force for the first side box to move away from the first sliding member;

[0028] A fourth elastic reset member, one end of which acts on the first sliding member and the other end of which acts on the second side box, is used to provide a force for the second side box to move away from the first sliding member;

[0029] The rotational arrangement of the first side box and the second side box is designed to ensure that the first side box and the second side box remain in close contact in both the mold core-containing closed box state and the mold core-free closed box state.

[0030] For example, at least one embodiment of this disclosure provides a core-making machine for producing manhole covers, wherein the mold component has a first side mold and a second side mold on both sides, and the first side mold and the second side mold are arranged at an included angle.

[0031] For example, at least one embodiment of this disclosure provides a core-making machine for producing manhole covers, wherein the first side box has a plug-in interface for communicating with the sand-shooting component.

[0032] The beneficial effects of the embodiments disclosed herein are as follows:

[0033] In this disclosure, by circumferentially arranging multiple first and second sliding parts and performing mold closing and opening operations on the side box, multiple sand cores can be produced simultaneously. Compared with traditional core-making machines that can only process one sand core at a time, production efficiency is significantly improved. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a core-making machine in one embodiment of the present disclosure;

[0036] Figure 2 for Figure 1 A top view of the core-making machine in the embodiment;

[0037] Figure 3 for Figure 2 Schematic diagram of the structure in sectional view (AA);

[0038] Figure 4 for Figure 2 Schematic diagram of the structure in cross-section of the middle section (BB);

[0039] Figure 5 for Figure 2 Schematic diagram of the structure in the middle CC section;

[0040] Figure 6 for Figure 2 Schematic diagram of the cross-section of the middle DD;

[0041] Figure 7 for Figure 6 A magnified schematic diagram of the central part of E;

[0042] In the figure: base 100, first sliding member 200, first pushed surface 201, first side box 300, insertion interface 301, second side box 400, sand shooting member 500, second sliding member 600, second pushed surface 601, mold member 700, first side mold 710, second side mold 720, first drive assembly 800, first elastic reset member 810, first push member 820, first push surface 821, first linear drive member 830, second drive assembly 900, second elastic reset member 910, second push member 920, second push surface 921, second linear drive member 930, receiving plate 1000, receiving part 1001, third elastic reset member 1100, fourth elastic reset member 1200. Detailed Implementation

[0043] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0044] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0045] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0046] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0048] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] like Figures 1-7The diagram illustrates a core-making machine for manhole cover production according to an embodiment of this disclosure, comprising a base 100, a first sliding member 200, a first side box 300, a second side box 400, a sand-shooting member 500, a second sliding member 600, and a mold member 700. The base 100 has axial and radial dimensions, and the first sliding member 200 is slidably disposed on the base 100 along the radial direction of the base 100, wherein the first sliding member 200 is arranged in a plurality of circumferentially. The first side box 300 and the second side box 400 are respectively disposed on both sides of the first sliding member 200, and the adjacent first side boxes 300 and the second side boxes 400 are used for mold closing on two adjacent first sliding members 200. After the first sliding member 200 slides, the first side box 300 and the second side box 400 have at least a mold core-free closed state and an open state. When it is in the mold core-free closed state, a number of first sliding members 200 slide and converge, so that the first side box 300 and the second side box 400 abut against each other. When it is in the open state, a number of first sliding members 200 slide away, so that the first side box 300 and the second side box 400 separate.

[0050] A sand-shooting component 500 is movably disposed above the first sliding component 200 and configured to shoot sand between the first side box 300 and the second side box 400 after being moved. A second sliding component 600 is slidably disposed on the base 100 along the radial direction of the base 100. Several second sliding components 600 are arranged circumferentially, and each second sliding component 600 is slidably located between two adjacent first sliding components 200. A mold component 700 is disposed on each second sliding component 600. The mold component 700 is configured to move with the second sliding component 600 and can move between the first side box 300 and the second side box 400.

[0051] The first side box 300 and the second side box 400 are in a mold core closed box state. When in the mold core closed box state, the mold part 700 moves between the first side box 300 and the second side box 400, so that the first side sand mold and the second side sand mold are formed in the first side box 300 and the second side box 400 respectively. When the first side box 300 and the second side box 400 are in a mold coreless closed box state, the first side sand mold and the second side sand mold are used to close the mold to form a sand core.

[0052] For example, the base 100 is disc-shaped, and several grooves are machined radially on the upper surface of the base 100. The number of grooves corresponds to the number of the first sliding members 200, so as to ensure that the first sliding members can slide smoothly radially on the base.

[0053] The first sliding element 200 consists of several parts, arranged circumferentially on the base 100. The specific number is determined based on the shape and size of the sand core and the production efficiency requirements of the core-making machine.

[0054] Both the first side box 300 and the second side box 400 are welded from high-quality steel to form cavities for containing sand. The shape of the cavity is designed according to the shape of the sand core. Reinforcing ribs are provided on the outer walls of the first and second side boxes to enhance the strength of the box body and prevent deformation during mold closing and sand injection. The bottom of the box body is fixed to the connecting seat of the first sliding member 200 by bolts or welding to ensure a firm connection.

[0055] The sand-shooting component 500 mainly consists of a sand-shooting cylinder, a sand-shooting nozzle, and a moving mechanism. The sand-shooting cylinder stores sand, and its capacity is determined by the required sand volume for a single shot. The sand-shooting nozzle is installed at the bottom of the sand-shooting cylinder, and its shape and size are designed according to the shape of the sand core and the sand-shooting requirements. The sand-shooting component is moved above the first sliding component 200 via a guide rail and slider mechanism. The guide rail is mounted on the frame of the core-making machine and is parallel to the radial direction of the substrate. The slider is fixedly connected to the sand-shooting cylinder and, driven by a motor through a screw-nut mechanism or a chain drive mechanism, allows the sand-shooting component to move back and forth on the guide rail, thereby accurately shooting sand between the first side box 300 and the second side box 400 in the moldless core-closed state. Furthermore, the sand-shooting component 500 can simultaneously connect with multiple closed first side boxes 300 and second side boxes 400 for sand feeding, thus ensuring processing efficiency.

[0056] The second sliding member 600 is also radially slidable along the base 100, and its number matches that of the first sliding members, arranged in several circles between adjacent first sliding members. The structure of the second sliding member 600 is similar to that of the first sliding member 200, but its size may be relatively smaller. It also achieves radial sliding through the cooperation of a slider and a guide rail on the base. The function of the second sliding member is to support and move the mold part 700.

[0057] Each second sliding member 600 is equipped with a mold member 700. The mold member is designed according to the internal structure of the manhole cover sand core and is made of high-temperature resistant and wear-resistant mold steel. The shape and size of the mold member match the internal structure of the sand core, and its surface is finely machined to ensure the accuracy of the formed sand mold. The mold member 700 is fixedly connected to the second sliding member 600 by means of locating pins and bolts to ensure that the mold member will not shift during movement.

[0058] During operation, the second sliding member 600 first slides along the radial guide rail of the base 100, causing the mold member 700 to move between the first side box 300 and the second side box 400. Simultaneously, the first sliding member 200 slides together, causing the first and second side boxes to abut against each other, entering a mold core-containing closed-box state. In this state, the mold member is located within the cavity formed by the first and second side boxes, providing internal support and shape constraints for subsequent sand mold forming.

[0059] Next, sand molding is performed. The sand-shooting component 500 moves to a suitable position and sprays sand into the space between the first side box 300, the second side box 400, and the mold component 700 using a sand-shooting gun. Under the action of compressed air, the sand quickly fills and compacts, forming the first and second side sand molds respectively in the first and second side boxes. Because the sand-shooting component can move above the first sliding component, it can shoot sand into the mold from different angles, resulting in a more uniform distribution of sand and improving the quality of the sand mold.

[0060] Then, the mold is opened and removed. After sand molding is completed, the first sliding member 200 slides away, causing the first side box 300 and the second side box 400 to separate, entering the open box state. At this time, the second sliding member 600 drives the mold member 700 to move out from between the first side box and the second side box, preparing for the subsequent merging of the sand core.

[0061] Then, the mold is closed to form a sand core. The first sliding member 200 slides and converges again, causing the first side box 300 and the second side box 400 to abut against each other, entering the moldless core-closed state. At this time, the previously formed first and second side sand molds are closed without a mold component to form a complete sand core. Since the first and second side sand molds are based on the same mold component during the forming process, the sand core after mold closing can accurately meet the requirements of the internal structure of the manhole cover.

[0062] Finally, the sand core is removed from the box, and the first sliding member 200 slides away again, separating the first side box 300 and the second side box 400, entering the open state. The combined sand core can then be easily removed from the first and second side boxes, completing the production process of one sand core. Throughout the process, the coordinated movement of multiple first and second sliding members and the side boxes allows for the simultaneous production of multiple sand cores, significantly improving core-making efficiency.

[0063] By employing the circumferential arrangement of multiple first sliding parts 200 and second sliding parts 600, along with the mold closing and opening operations of the side box, multiple sand cores can be produced simultaneously. Compared to traditional core-making machines that can only process one sand core at a time, production efficiency is significantly improved. Furthermore, the moving sand-shooting mechanism of the sand-shooting part 500 ensures uniform sand distribution, reducing sand core quality issues caused by uneven sand distribution and further enhancing production efficiency.

[0064] The detachable connection between the first side box 300, the second side box 400 and the first sliding member 200, as well as the mold member 700 and the second sliding member 600, allows the equipment to easily replace side boxes and mold members of different specifications, thereby adapting to the needs of making manhole cover sand cores of different sizes and shapes, and enhancing the versatility and adaptability of the equipment.

[0065] In some examples, the system also includes a first driving assembly 800, a second driving assembly 900, a first elastic reset member 810, and a second elastic reset member 910. The first driving assembly 800 is disposed on one side of the base 100 and is used to drive a plurality of first sliding members 200 to slide closer together. One end of the first elastic reset member 810 acts on the first sliding member 200, and the other end acts on the base 100, providing a force to pull the plurality of first sliding members 200 away from each other. The second driving assembly 900 is disposed on one side of the base 100 and is used to drive a plurality of second sliding members 600 to slide closer together. One end of the second elastic reset member 910 acts on the second sliding member 600, and the other end acts on the base 100, providing a force to pull the plurality of second sliding members 600 away from each other.

[0066] In some examples, the first drive assembly 800 includes a first pusher 820 and a first linear drive 830. The first pusher 820 is vertically movable and has a plurality of circumferentially arranged first push surfaces 821. The first slider 200 has a first pushed surface 201. The first push surface 821 abuts against the first pushed surface 201 to cause the first side box 300 and the second side box 400 to change from an open state to a closed state with mold core or a closed state without mold core. The first linear drive 830 is used to drive the first pusher 820 to move vertically.

[0067] In some examples, the second drive assembly 900 includes a second pusher 920 and a second linear drive 930. The second pusher 920 is vertically movable and has a plurality of circumferentially arranged second push surfaces 921. The second slider 600 has a second pushed surface 601. The second push surface 921 abuts against the second pushed surface 601 for pushing the mold part 700 between the first side box 300 and the second side box 400. The second linear drive 930 is used to drive the second pusher 920 to move vertically.

[0068] For example, the first pusher 820 is made of high-strength cast steel to withstand the large forces generated during the pushing of the first slider 200. It is generally annular and vertically movable on one side of the base 100. On the annulus, several circumferentially arranged first push surfaces 821 are evenly distributed, the number of which corresponds to the number of first sliders and their positions are one-to-one. The shape of the first push surface is an inclined plane, and its inclination angle is designed to effectively convert the vertical force into a force that pushes the first slider to move radially when the first pusher rises and falls. The surface of the first push surface is hardened to enhance its wear resistance.

[0069] The first linear drive component 830 can be an electric push rod, a hydraulic cylinder, or a pneumatic cylinder. Considering the requirements of the core-making machine for driving force and precision, an electric push rod is the more ideal choice. One end of the electric push rod is fixed to the base 100 via a connecting seat, and the other end is connected to the first push component 820. Through the control system, the extension and retraction lengths of the electric push rod can be accurately adjusted, thereby controlling the position of the first push component pushing the first sliding component, realizing the transformation of the first side box 300 and the second side box 400 from the open state to the closed state with or without the mold core.

[0070] When the first and second side boxes need to be closed, the control system activates the first linear drive 830, extending the electric push rod and causing the first pusher 820 to rise. As the first pusher rises, its circumferentially arranged first push surface 821 gradually comes into contact with the first pushed surface 201 of the first slider 200. The inclined push surface converts the vertical force into a radial force, pushing the first slider to slide towards the center along the radial guide rail of the base, causing the first and second side boxes to approach each other and finally come into contact, completing the closing action. When it is necessary to open the boxes, the first linear drive reverses its action, the electric push rod retracts, the first pusher descends, and the first push surface disengages from the first pushed surface. Under the action of the first elastic reset member 810, the first slider slides outward along the radial guide rail, separating the first and second side boxes.

[0071] The first elastic reset element 810 can be a compression spring, with one end fixed to the first sliding member 200 near the edge of the base, and the other end fixed to the corresponding position on the base 100. The elastic coefficient of the compression spring is selected based on the weight of the first sliding member, the friction with the guide rail, and the required reset force. When the first drive assembly stops operating, the compression spring releases its elastic potential energy, providing a force that moves the first sliding member away from the base, causing the first sliding member to automatically return to the open state, thus achieving automatic opening and reducing manual operation.

[0072] The second drive assembly 900 is also made of high-strength cast steel and is circular in shape. It is vertically movable and positioned on one side of the base 100, corresponding to the first drive assembly. Several circumferentially arranged second push surfaces 921 are evenly distributed on the disc. The number of second push surfaces is the same as the number of second sliding members 600, and their positions correspond one-to-one. The shape and inclination angle of the second push surfaces are similar to those of the first push surfaces, but their dimensions may be appropriately adjusted according to the size of the second sliding member. The surface of the second push surfaces is also hardened to ensure wear resistance during the pushing of the second sliding member.

[0073] When the mold component 700 needs to be pushed between the first side box 300 and the second side box 400, the control system activates the second drive assembly 900. Similar to the first drive assembly, the second pusher 920 is moved up and down by the second linear drive 930, which can be an electric push rod or other linear drive component. As the second pusher 920 rises, its circumferentially arranged second push surface 921 gradually abuts against the second pushed surface 601 of the second slider 600, and the vertical force is converted into radial force through the inclined push surface, pushing the second slider to slide towards the center along the radial guide rail of the base, thereby accurately pushing the mold component between the first and second side boxes, completing the positioning action of the mold component. When it is necessary to remove the mold component, the second drive assembly reverses its action, the second pusher descends, the second push surface disengages from the second pushed surface, and under the action of the second elastic reset member 910, the second slider slides outward along the radial guide rail, removing the mold component.

[0074] The second elastic reset member 910 is similar to the first elastic reset member, also using a compression spring. One end is fixed to the second sliding member 600 near the edge of the base, and the other end is fixed to the corresponding position on the base 100. After the mold part is positioned, the second elastic reset member is in a compressed state, storing elastic potential energy. When it is necessary to remove the mold part, the second elastic reset member releases the elastic potential energy, providing a force to the second sliding member to move away from it, causing the second sliding member to automatically return to its initial position for easy operation next time.

[0075] The configuration of the first drive assembly 800 and the second drive assembly 900 enables automated driving of the first sliding member 200, the second sliding member 600, and the mold component 700, reducing manual intervention and improving the stability and efficiency of the core-making process. Through precise control of the drive assemblies by the control system, operations such as box closing, box opening, and mold component positioning can be accurately achieved, ensuring the accuracy and consistency of sand core production.

[0076] The application of the first elastic reset component 810 and the second elastic reset component 910 enables operations such as unpacking and mold component removal to be completed automatically, eliminating the need for manual pushing of the sliding component. This significantly reduces the workload of operators and improves the convenience and efficiency of operation. Simultaneously, the elastic reset component also helps to increase the operating speed of the equipment and shorten the sand core production cycle.

[0077] The rational design and layout of the drive assembly and elastic reset component ensure smoother movement of all parts during the core-making machine's operation. The stable driving force provided by the drive assembly and the uniform reset force provided by the elastic reset component reduce the impact and vibration of the sliding parts during movement, enhancing the overall stability of the equipment and extending its service life.

[0078] In some examples, a receiving plate 1000 is also included: the receiving plate 1000 is vertically movable and disposed below the first sliding member 200, and has a plurality of circumferentially arranged receiving portions 1001, which can move between two adjacent first sliding members 200.

[0079] For example, the receiving plate 1000 is circular in shape, echoing the shape of the substrate 100. It is made of high-strength and corrosion-resistant metal to ensure that it can withstand the weight of the sand core and the influence of various working environments during long-term use.

[0080] The receiving plate 1000 is provided with a number of circumferentially arranged receiving parts 1001. The number of receiving parts corresponds to the number of first sliding members 200, and their positions are aligned with the gap between two adjacent first sliding members. Each receiving part can fit against the bottom of the sand core, ensuring that the sand core is more stable when placed.

[0081] The receiving plate 1000 is moved up and down via a lifting mechanism, which can be driven by an electric push rod, hydraulic cylinder, or pneumatic cylinder. Taking an electric push rod as an example, one end of the electric push rod is fixed to the frame of the core-making machine, and the other end is connected to the center of the receiving plate. The electric push rod drives the lead screw to rotate via a motor, converting the rotational motion into linear motion, thereby precisely controlling the lifting height of the receiving plate. To ensure the smoothness of the receiving plate's lifting, multiple guide posts can be installed around the receiving plate. These guide posts cooperate with guide sleeves on the core-making machine frame to guide the lifting movement of the receiving plate.

[0082] When the first side box 300 and the second side box 400 are in the open state and the sand core is made, the receiving plate 1000 rises under the action of the lifting mechanism. The receiving part 1001 moves to a position below between the two adjacent first sliding members 200, exactly aligned with the position of the sand core. The receiving part 1001 supports the sand core from the bottom. After the first side box 300 and the second side box 400 continue to move away, the receiving part 1001 moves down and removes the sand core.

[0083] After receiving the sand cores, the receiving plate can be lowered to a suitable height using a lifting mechanism, depending on the actual production process. At this point, the sand cores can be easily transferred from the receiving plate to subsequent processing or storage areas. For example, forklifts, conveyor belts, or other equipment can be used to transfer the sand cores from the receiving plate, improving the efficiency of transferring sand cores from the core-making machine to subsequent processes and reducing the labor intensity of manual handling.

[0084] During the core-making machine's box-closing operation, the receiving plate 1000 is in a low position to avoid interference from the box-closing action above it. Once the first side box 300 and the second side box 400 have completed core production and entered the opening state, the control system issues a command, and the receiving plate rises under the drive of the lifting mechanism. The receiving part 1001 moves to the designated position to receive the sand core. After the sand core is removed and placed on the receiving part, the receiving plate descends again to make room for the next round of core-making operations. This collaborative working method ensures close coordination between the various processes of the core-making machine, improving overall production efficiency.

[0085] The lifting and lowering operation of the receiving plate coordinates with the first drive assembly 800, the second drive assembly 900, and the first and second elastic reset members 810 and 910. When the drive assembly pushes the sliding member to perform the closing or opening of the box, the receiving plate remains stationary to avoid affecting the normal movement of the sliding member. After the sand core is made, the lifting and lowering action of the receiving plate matches the position of the sliding member, ensuring that the sand core can be smoothly transferred from the side box to the receiving plate. For example, when the first sliding member slides outward to open the side box under the action of the first elastic reset member, the receiving plate rises in time to receive the sand core, achieving orderly operation of each component.

[0086] The receiving plate 1000 allows sand cores to be quickly and easily placed on the receiving section 1001 after being removed from the core-making machine. The height of the receiving plate can be flexibly adjusted via a lifting mechanism, facilitating connection with subsequent transfer equipment. Compared to traditional manual handling methods, this significantly improves the efficiency of sand core transfer, reduces time wasted in the production process, and helps improve the overall efficiency of manhole cover production.

[0087] The application of the receiving plate reduces the distance and difficulty of manually handling sand cores. Operators only need to take the sand cores out of the side box and place them on the receiving section. Subsequent transfer work can be completed by other equipment, reducing the labor intensity of operators and improving work safety.

[0088] The coordinated operation of the receiving plate and other components of the core-making machine makes the entire core-making process smoother and more orderly. The lifting and lowering operation of the receiving plate, along with the closing, opening, and sliding movements of the box, enhances the overall integrity and coordination of the equipment, contributing to improved operational stability and production quality.

[0089] In some examples, the axial direction of the base 100 is vertical, and both the first side box 300 and the second side box 400 are rotatably mounted on the first sliding member 200, and the system further includes:

[0090] The third elastic reset member 1100 has one end acting on the first sliding member 200 and the other end acting on the first side box 300, and is used to provide a force for the first side box 300 to move away from the first sliding member 200.

[0091] The fourth elastic reset member 1200 has one end acting on the first sliding member 200 and the other end acting on the second side box 400, and is used to provide a force for the second side box 400 to move away from the first sliding member 200.

[0092] The rotational arrangement of the first side box 300 and the second side box 400 is designed to ensure that the first side box 300 and the second side box 400 maintain a tight contact in both the mold core-containing closed state and the mold core-free closed state.

[0093] In some examples, the mold part 700 has a first side mold 710 and a second side mold 720 on both sides, and the first side mold 710 and the second side mold 720 are set at an included angle.

[0094] For example, the third elastic reset member 1100 can be a compression spring, with one end abutting against the side of the first sliding member 200 and the other end abutting against the side of the first side box 300 near the first sliding member 200. When the first side box 300 is subjected to an external force and approaches the first sliding member 200, the third elastic reset member 1100 will be compressed, storing elastic potential energy. Once the external force disappears, the third elastic reset member 1100, with its elastic restoring force, provides a force to the first side box 300 away from the first sliding member 200. For example, during the core-making process, if the first side box 300 needs to be opened or closed, when opening the box, the third elastic reset member 1100 assists the first side box 300 to open quickly, maintaining a certain distance between it and the first sliding member 200.

[0095] Similarly, the fourth elastic reset member 1200 also uses a compression spring, with one end connected to the other side of the first sliding member 200 and the other end connected to the side of the second side box 400 near the first sliding member 200. Its working principle is similar to that of the third elastic reset member 1100, providing a force to the second side box 400 away from the first sliding member 200. In actual operation, the fourth elastic reset member 1200 and the third elastic reset member 1100 cooperate with each other, ensuring that the first side box 300 and the second side box 400 maintain a suitable positional relationship with the first sliding member 200 under various operating conditions.

[0096] The rotating design of the first side box 300 and the second side box 400 ensures they remain tightly abutted in both the mold core-containing and mold core-free states. Taking the mold core-containing state as an example, when the mold component 700, carrying the mold core, enters the closing position, the first side box 300 and the second side box 400 can rotate to adaptively conform to the shape of the mold core. Under the action of the third elastic reset member 1100 and the fourth elastic reset member 1200, they tightly abut against the mold core, preventing sand leakage and ensuring the core sand can be accurately formed into the desired shape. In the mold core-free state, the first side box 300 and the second side box 400 can also rotate to tightly abut against each other, maintaining the sealing of the closing and providing a stable space for subsequent core sand filling.

[0097] The mold component 700 has a first side mold 710 and a second side mold 720 on both sides, arranged at an angle. This angle allows the core sand to be formed into a core conforming to the shape requirements of a manhole cover within the mold. This is because when the mold core is in the closed state, the additional mold component 700 between the first side mold 710 and the second side mold 720 results in a different angle compared to the closed state without the core. This angle arrangement allows the core sand to be formed into a core conforming to the shape requirements of a manhole cover within the mold. Simultaneously, this angle arrangement also facilitates easier demolding of the core from the mold component 700 during the demolding process, improving production efficiency.

[0098] In some examples, the first side box 300 has a connector 301 for communicating with the sand-shooting element 500.

[0099] For example, the insertion interface 301 on the first side box 300 is designed as a circular or square opening, the size of which is adapted to the sand-shooting tube of the sand-shooting component 500 to achieve a tight connection. A sealing gasket, such as a rubber gasket, is provided at the edge of the insertion interface 301 to effectively prevent core sand leakage when the sand-shooting tube is inserted. The insertion interface 301 has an internal guiding structure, such as a guide groove or guide protrusion, which helps to accurately insert the sand-shooting tube and maintain stability during sand-shooting.

[0100] The sand-shooting tube of the sand-shooting component 500 can be automatically inserted into the connector 301. In automatic connection mode, after the sand-shooting tube is inserted, it is fixed by a snap-fit ​​connection to ensure that it will not loosen during sand-shooting.

[0101] Once the sand-shooting component 500 is connected to the insertion interface 301, the sand-shooting component 500 is activated, and compressed air carries the core sand through the sand-shooting pipe into the interior of the first side box 300. Since the first side box 300 and the second side box 400 are in a closed state, the core sand, under the action of compressed air, is evenly filled within the space enclosed by the first side box 300, the second side box 400, and the mold component 700. The insertion interface 301 is carefully designed, generally positioned near the top of the first side box 300. This allows the core sand to fill from top to bottom, facilitating air removal, reducing defects such as air pockets inside the core, and improving the quality of the core.

[0102] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A core-making machine for manhole cover production, characterized in that, include: A substrate (100) having axial and radial dimensions; The first sliding member (200) is slidably disposed on the base (100) along the radial direction of the base (100), and the first sliding member (200) is arranged in a plurality of circles; A first side box (300) and a second side box (400) are respectively disposed on both sides of the first sliding member (200), and adjacent first side boxes (300) and second side boxes (400) are used for mold closing on two adjacent first sliding members (200). After the first sliding member (200) slides, the first side box (300) and the second side box (400) have at least a mold core-free closed state and an open state. When the mold core-free closed state is in which a number of first sliding members (200) slide and converge, so that the first side box (300) and the second side box (400) abut against each other. When the open state is in which a number of first sliding members (200) slide away, so that the first side box (300) and the second side box (400) separate. A sand-shooting component (500) is movably disposed above the first sliding component (200) and is configured to shoot sand between the first side box (300) and the second side box (400) after being moved. A first driving component (800) is disposed on one side of the base (100) and is used to drive a plurality of first sliding members (200) to slide closer together; The first elastic reset member (810) has one end acting on the first sliding member (200) and the other end acting on the base (100) to provide a force that moves the first sliding members (200) away from each other; The first driving component (800) includes: The first pusher (820) is vertically movable and has a plurality of circumferentially arranged first push surfaces (821). The first sliding member (200) has a first pushed surface (201). The first push surface (821) abuts against the first pushed surface (201) to cause the first side box (300) and the second side box (400) to change from an open box state to a box-closed state with mold core or to a box-closed state without mold core. The first linear drive (830) is used to drive the first pusher (820) to move up and down.

2. The core-making machine for manhole cover production according to claim 1, characterized in that, Also includes: The second slider (600) is slidably disposed on the base (100) along the radial direction of the base (100). The second slider (600) is arranged in a plurality of circles and is slidably located between two adjacent first sliders (200). A mold component (700) is provided on each of the second sliding members (600), the mold component (700) being configured to move with the second sliding member (600) and being movable between the first side box (300) and the second side box (400); The first side box (300) and the second side box (400) are in a mold core closed box state. When in the mold core closed box state, the mold component (700) moves between the first side box (300) and the second side box (400), so that the first side box (300) and the second side box (400) respectively form the first side sand mold and the second side sand mold. When the first side box (300) and the second side box (400) are in a mold coreless closed box state, the first side sand mold and the second side sand mold are used to close the mold to form the sand core.

3. A core-making machine for manhole cover production according to claim 2, characterized in that, Also includes: The second drive assembly (900) is disposed on one side of the base (100) and is used to drive a plurality of the second sliders (600) to slide closer together; The second elastic reset member (910) has one end acting on the second slider (600) and the other end acting on the base (100) to provide a force that moves the second sliders (600) away from each other.

4. A core-making machine for manhole cover production according to claim 3, characterized in that, The second drive component (900) includes: The second pusher (920) is vertically movable and has a plurality of circumferentially arranged second push surfaces (921). The second sliding member (600) has a second pushed surface (601). The second push surface (921) abuts against the second pushed surface (601) to push the mold part (700) between the first side box (300) and the second side box (400). The second linear drive (930) is used to drive the second pusher (920) to move up and down.

5. A core-making machine for manhole cover production according to claim 4, characterized in that, It also includes a receiving plate (1000), which is vertically movable and disposed below the first sliding member (200), and has a plurality of circumferentially arranged receiving parts (1001), which can move between two adjacent first sliding members (200).

6. A core-making machine for manhole cover production according to claim 3, characterized in that, The axial direction of the base (100) is vertical, and both the first side box (300) and the second side box (400) are rotatably mounted on the first sliding member (200). The base also includes: The third elastic reset member (1100) has one end acting on the first sliding member (200) and the other end acting on the first side box (300) to provide a force for the first side box (300) to move away from the first sliding member (200); A fourth elastic reset member (1200) is provided, with one end acting on the first sliding member (200) and the other end acting on the second side box (400), for providing a force for the second side box (400) to move away from the first sliding member (200); The rotational arrangement of the first side box (300) and the second side box (400) is designed to ensure that the first side box (300) and the second side box (400) remain in close contact in both the mold core-containing closed box state and the mold core-free closed box state.

7. A core-making machine for manhole cover production according to claim 6, characterized in that, The mold component (700) has a first side mold (710) and a second side mold (720) on both sides, and the first side mold (710) and the second side mold (720) are set at an angle to each other.

8. A core-making machine for manhole cover production according to claim 1, characterized in that, The first side box (300) has a plug-in interface (301) for communicating with the sand-shooting component (500).

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