Die assembly for sand-lined iron mold casting

Abstract

The invention relates to the technical field of sand-lined iron mold casting, and discloses a mold assembly for sand-lined iron mold casting, which comprises a base, a rack is arranged at the upper end of the base, a mold closing assembly is mounted on one side of the rack, a transverse plate is arranged at the top end of the rack, and a butt joint assembly is arranged on one side of the transverse plate. And a mold assembly is mounted on one side of the mold closing assembly, and an auxiliary fastening assembly is mounted in the mold assembly. According to the mold assembly for sand-lined iron mold casting, through the mold closing assembly and the butt joint assembly, the time is accurately mastered to start the auxiliary fastening assembly while the first mold and the second mold are controlled to be close to each other, the automation degree of the device is remarkably improved, the first mold and the second mold are stably attached together through the auxiliary fastening assembly, and the production efficiency is improved. The structure stability is improved, the stability of the mold in the casting process is enhanced, gaps or displacement of the mold in the high-pressure casting process is prevented, and the precision and quality of castings are improved.

Description

Technical Field

[0001] The invention relates to the technical field of iron mold sand-coated casting, in particular to a mold assembly for iron mold sand-coated casting. Background Art

[0002] Iron mold sand-coated casting is to cover the surface of the metal mold cavity with a layer of molding sand of a certain thickness, and then pour the liquid metal into the mold cavity. Under the joint action of the iron mold and the covering sand, the liquid metal cools and solidifies to form a casting. The covering sand layer can improve the surface quality of the casting and reduce the heat transfer between the casting and the iron mold. At the same time, the iron mold provides a higher cooling rate for the casting, which is conducive to obtaining a dense casting structure.

[0003] Iron mold sand-coated casting is an advanced casting process that combines the rigidity of the iron mold and the yieldability of the sand mold, and can produce high-precision, high-quality castings. However, the existing iron mold sand-coated casting mold components have some shortcomings. During the opening and closing process of the mold, there is a lack of optimized fastening and demolding processes, and the fastening and demolding operations need to be controlled separately, which means that the operator needs to complete multiple steps in sequence, such as fastening the mold manually or through a specific device, and after the casting is completed, the demolding process must be operated separately. It is necessary to develop a mold component for iron mold sand-coated casting that is easy to use.

[0004] The prior art publication number is CN113441681A, which provides a multi-way valve sand mold and sand-coated casting mold, including: a sand box, a resin sand casting mold, a coated sand shell mold and a coated sand core, the resin sand casting mold is located in the sand box, the coated sand shell mold is located in the resin sand casting mold, and the coated sand core is located in a cavity formed by a coated sand upper shell mold and a coated sand lower shell mold, the inner mold of the cavity matches the outer mold of the multi-way valve to be cast, and the resin sand casting mold improves the strength and rigidity of the casting mold, and can avoid deformation and shrinkage caused by molten iron shrinkage and graphite expansion during the solidification process; secondly, the coated sand shell mold and the coated sand core can improve the accuracy and surface quality of the multi-way valve; and by using shell casting, the positioning, box turning, box closing and other processes can be eliminated, thereby achieving the purpose of improving work efficiency; in addition, compared with iron mold sand coating, the mold investment cost can be reduced.

[0005] The above-mentioned prior art, by utilizing shell casting, can eliminate the processes of positioning, turning over the box, and closing the box, thereby achieving the purpose of improving work efficiency. In addition, compared with iron mold sand coating, it can reduce the mold investment cost, but it does not have the process of optimizing mold closing and tightening. The mold closing and tightening operations need to be controlled separately, and multiple steps need to be completed in sequence. The mold is closed and tightened by a specific device. After the casting is completed, it needs to be operated separately, which increases the production cycle time during use and reduces the overall production efficiency.

[0006] It can be seen that a mold assembly for iron mold sand-coated casting is needed to solve the problem that the existing mold closing and fastening processes mentioned in the above background technology lack optimization, require separate operations and have cumbersome steps, resulting in extended production cycle and reduced overall efficiency. Summary of the invention

[0007] The object of the present invention is to provide a mold assembly for iron mold sand-coated casting to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a mold assembly for iron mold sand casting, comprising a base, a frame is arranged at the upper end of the base, a clamping assembly is installed on one side of the frame, a cross plate is arranged at the top of the frame, a docking assembly is arranged on one side of the cross plate, a mold assembly is installed on one side of the clamping assembly, and an auxiliary fastening assembly is installed inside the mold assembly; The clamping assembly includes an installation bin, and a first motor is installed on one side of the installation bin, a first rotating rod is installed on the output end of the first motor, and a first pulley group is sleeved on the outer side of the first rotating rod, a worm is installed on one side of the first pulley group, and a fan-shaped worm gear is arranged on the upper end of the worm, a support plate is arranged on one side of the fan-shaped worm gear, and a second rotating rod is arranged on one side of the fan-shaped worm gear shaft center, one end of the second rotating rod is connected to the first gear, and a second gear is arranged on the lower end of the first gear, a first connecting rod is connected to one side of the first gear, and a second connecting rod is installed on one end of the first connecting rod, a first hinge block is arranged on one end of the second connecting rod, and a mounting plate is arranged on one side of the first hinge block; The docking assembly includes a second pulley group, and a third rotating rod is installed on one side of the second pulley group, a pneumatic telescopic rod is installed on the upper end of the cross plate, and a movable plate is installed on the output end of the pneumatic telescopic rod, a slider is installed on the lower end of the movable plate, the cross plate is provided with a slide groove at a position corresponding to the movement of the slider, a push plate is installed on the lower end of the slider, a latch is provided on the outer side of the third rotating rod, a movable rotating rod is provided on one side of the push plate, and a protrusion is provided on one end of the movable rotating rod; The mold assembly includes a first mounting frame, and a second mounting frame is arranged on one side of the first mounting frame, heat dissipation holes are opened on the first mounting frame and the second mounting frame, a first fixing plate is symmetrically installed inside the first mounting frame, and a first mold is arranged on one side of the first fixing plate, a second mold is arranged on one side of the first mold, and a guide rod is symmetrically installed on one side of the second mold; The auxiliary fastening assembly includes a recessed block, and a first connecting rod is provided at one end of the recessed block, a thread is provided on the outer side of the first connecting rod, and a recessed hole with a trapezoidal cross-section is opened at one end of the inner side of the first connecting rod, a fixing frame is installed inside the first mold, a clamping piece is placed at one end of the first connecting rod, and a first bevel gear is sleeved on the outer side of the first connecting rod, a supporting ring is provided on one side of the first bevel gear, and a second bevel gear is provided at the lower end of the first bevel gear, and a screw is provided at the lower end of the second bevel gear.

[0009] Preferably, the first motor is detachably arranged on one side of the installation bin, the first rotating rod passes through the installation bin and extends to the outside thereof, one end of the first pulley group is sleeved on the outside of the first rotating rod, and the other end of the first pulley group is sleeved on the outside of the worm.

[0010] Preferably, the fan-shaped worm wheel is meshed with the worm, one end of the second rotating rod is connected to the center position of the rotating shaft of the fan-shaped worm wheel, and the other end of the second rotating rod is connected to the center position of the rotating shaft of the first gear, and the first gear is meshed with the second gear.

[0011] Preferably, the first connecting rods are in multiple groups, and the multiple groups of first connecting rods are respectively fixedly connected to the central axes of the first gear and the second gear, one end of the first connecting rod is rotatably connected to one end of the second connecting rod, the number of the second connecting rods matches that of the first connecting rods, and the second connecting rods are hinged to the mounting plate through the first hinge block.

[0012] Preferably, one end of the second pulley group is sleeved on the outside of the first rotating rod, and the other end of the second pulley group is sleeved on the outside of the third rotating rod, the pneumatic telescopic rod is detachably arranged at the upper end of the cross plate, the slider is slidably arranged in the slide groove, the third rotating rod passes through the push plate and extends to the outside thereof, the inner cavity of the movable rotating rod fits with the latch tooth, and one end of the movable rotating rod is installed together with the push plate through a bearing.

[0013] Preferably, the protrusions and recesses match, the mounting plates are divided into two groups, the first mounting frame is detachably arranged on one side of one group of mounting plates, and the second mounting frame is detachably arranged on one side of the other group of mounting plates, there are multiple groups of heat dissipation holes, and the multiple groups of heat dissipation holes are evenly opened on the first mounting frame and the second mounting frame, one end of the first connecting rod is threadedly connected to the fixed frame through a thread, the first bevel gear and the first connecting rod are clamped and slidably connected, one end of the clamping piece is arranged in the recessed hole, the guide rod passes through the clamping piece and extends into the recessed hole, and the abutting ring abuts against one side of the fixed frame.

[0014] Preferably, the second bevel gear meshes with the first bevel gear, the second bevel gears are multiple groups, and the multiple groups of second bevel gears are symmetrically arranged at both ends of the screw rod, and the first bevel gears are multiple groups, and the multiple groups of first bevel gears are relatively arranged.

[0015] Preferably, a uniform component is installed inside the mold assembly, and the uniform component includes a second motor, an L-shaped mounting plate is provided on one side of the second motor, and a third gear is provided at the output end of the second motor, a gear ring is installed on one side of the third gear, and a first set of rods is provided on one side of the gear ring, a second set of rods is sleeved on one side of the first set of rods, and a first spring is sleeved on the outer side of the second set of rods, a rotating top rod is installed on one side of the second mold, a bottom plate is provided at one end of the rotating top rod, and a rotating groove is opened on the bottom plate at a position corresponding to the rotation of the rotating top rod, a rotating block is provided on the rear side of the bottom plate, and an adjusting screw is provided on one side of the rotating block, a second hinge block is provided on one side of the first fixed plate, and a second connecting rod is provided on one side of the second hinge block, a third set of rods is installed at the middle position of the second mold, a second spring is sleeved on the outer side of the third set of rods, and a fourth set of rods is provided on one side of the third set of rods.

[0016] Preferably, the second motor is detachably arranged in the first installation frame, the output end of the second motor passes through the L-shaped mounting plate and extends to its outside, the L-shaped mounting plate is fixedly arranged in the first installation frame, the third gear is meshed with the gear ring, the second set rod is clamped and slidably arranged with the first set rod, one end of the second set rod is detachably connected to the first mold, the rotating push rod is detachably arranged on one side of the second mold, and the rotating push rod is slidably arranged in the rotating groove.

[0017] Preferably, the adjustment screw passes through a group of first fixed plates and is threadedly connected thereto, and one end of the adjustment screw contacts the base plate, one end of the second connecting rod is detachably connected to the base plate, and the other end of the second connecting rod is hinged to the first fixed plate through a second hinge block, the third set of rods is clamped and slidably connected to the fourth set of rods, and one end of the fourth set of rods is detachably connected to a group of first fixed plates.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: First, the present invention controls the first mold and the second mold to approach each other by setting a mold clamping component and a docking component, and accurately grasps the timing to start the auxiliary fastening component, which significantly improves the automation degree of the device, shortens the production cycle time to a certain extent, and improves the overall production efficiency. By turning on the first motor, the first motor drives the first rotating rod to rotate, and the rotation of the first rotating rod drives the first pulley group to operate, which in turn drives the worm to rotate, and the rotation of the worm causes the fan-shaped worm gear to rotate, and the rotation of the fan-shaped worm gear drives the second rotating rod to rotate, and the rotation of the second rotating rod drives the first gear to rotate, and the rotation of the first gear causes the second gear to rotate in the opposite direction. In this process, the rotation of the first gear changes the angle of the first connecting rod, thereby changing the angle of the second connecting rod. The angle of the two connecting rods ultimately achieves the adjustment of the lateral position of the mounting plate, so that the symmetrically arranged mounting plates are close to each other, driving the first mold and the second mold to be close to each other. At the same time, the rotation of the first rotating rod drives the second pulley group to operate, and the operation of the second pulley group drives the third rotating rod to rotate. Since the third rotating rod is engaged with the movable rotating rod through the locking teeth and is slidably arranged, the rotation of the third rotating rod drives the movable rotating rod to rotate. At this time, the pneumatic telescopic rod is started, and the pneumatic telescopic rod pushes the movable plate to move. The movement of the movable plate drives the movement of the slider. The movement of the slider drives the push plate to move, and then drives the movable rotating rod to move, so that the protrusion on the movable rotating rod is accurately inserted into the concave block. At the same time, the rotation of the movable rotating rod drives the concave block to rotate, triggering the operation of the auxiliary fastening assembly.

[0019] Second, the present invention realizes that the first mold and the second mold are stably fitted together by setting an auxiliary fastening component, thereby improving the stability of the structure, enhancing the stability of the mold during the casting process, preventing the mold from having gaps or displacements during high-pressure casting, and improving the precision and quality of the casting. By controlling the rotation of the concave block, the first connecting rod connected thereto is driven to rotate synchronously. Since the thread on the outer side of the first connecting rod is threadedly connected to the fixed frame, and the cross-section of the concave hole in the middle of the first connecting rod is a trapezoidal structure, during the rotation of the first connecting rod, one end thereof will gradually press the outer side of the clamping member, thereby prompting the clamping member to continuously press the guide rod, thereby achieving precise fastening of the position of the guide rod. At the same time, the rotation of the first connecting rod drives the rotation of the first bevel gear, and the position of the first bevel gear is limited by the abutting ring. The rotation of the first bevel gear drives the second bevel gear meshing therewith to rotate, and the rotation of the second bevel gear drives the screw rod to rotate. The rotation of the screw rod further drives another group of symmetrically arranged second bevel gears to rotate, thereby achieving comprehensive fastening of the symmetrically arranged guide rods.

[0020] Third, the present invention drives the first mold and the second mold to rotate repeatedly and move slightly by setting a uniform component. The rotation and movement operations cause the coated sand to evenly fill the mold cavity, reduce the generation of defects such as bubbles and cold shut, and this dynamic process helps the coated sand to form a more uniform and dense structure during the solidification process, thereby improving the production quality of the sand shell. By starting the second motor, the second motor drives the third gear to rotate, and the rotation of the third gear drives the gear ring to rotate. The rotation of the gear ring drives the first set of rods and the second set of rods to rotate. Since the first set of rods and the second set of rods are clamped and slidably arranged, the rotation of the second set of rods drives the first mold to rotate. By rotating the rotating block, the rotating block drives the adjusting screw to rotate, pressing the bottom plate to tilt, and the tilting of the bottom plate causes the rotating push rod to slide in the rotating groove, driving the second mold and the first mold to move forward and backward during the rotation process, and using the first spring and the second spring to provide reliable elastic support for the forward and backward movement of the second mold and the first mold. In this way, the first mold and the second mold are controlled to rotate and move back and forth repeatedly, causing the coated sand to evenly fill the mold cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the mold clamping assembly and the docking assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the first connecting rod and the second connecting rod of the present invention; Figure 5 It is a structural schematic diagram of the first mold and the concave block of the present invention; Figure 6 For the present invention Figure 2 A magnified view of the structure at center A; Figure 7 It is a structural schematic diagram of the screw rod and the moving block of the present invention; Figure 8 is a schematic structural diagram of the third gear and the gear ring of the present invention; Fig. 9 It is a schematic diagram of the structure of the rotating block and the adjusting screw of the present invention.

[0022] Among them: 1. Base; 2. Frame; 3. Clamping assembly; 301. Mounting bin; 302. First motor; 303. First rotating rod; 304. First pulley group; 305. Worm; 306. Sector worm gear; 307. Support plate; 308. Second rotating rod; 309. First gear; 310. Second gear; 311. First connecting rod; 312. Second connecting rod; 313. First hinge block; 314. Mounting plate; 4. Cross plate; 5. Docking assembly; 501. Second pulley group; 502. Third rotating rod; 503. Pneumatic telescopic rod; 504. Moving plate; 505. Slider; 506. Slide; 507. Push plate; 508. Gear; 509. Moving rotating rod; 510. Bump; 6. Mold assembly; 601. First mounting frame; 602. Second mounting frame; 603. Heat dissipation hole; 604. The first fixed plate; 605, the first mold; 606, the second mold; 607, the guide rod; 7, the auxiliary fastening assembly; 701, the concave block; 702, the first connecting rod; 703, the thread; 704, the concave hole; 705, the fixed frame; 706, the clamping piece; 707, the first bevel gear; 708, the support ring; 709, the second bevel gear; 710, the screw rod; 8, the uniform assembly; 801, the second motor; 802, the L-shaped mounting plate; 803, the third gear; 804, the gear ring; 805, the first set of rods; 806, the second set of rods; 807, the first spring; 808, the rotating top rod; 809, the bottom plate; 810, the rotating groove; 811, the rotating block; 812, the adjusting screw; 813, the second hinge block; 814, the second connecting rod; 815, the third set of rods; 816, the second spring; 817, the fourth set of rods. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5A mold assembly for iron mold sand casting includes a base 1, a frame 2 is arranged on the upper end of the base 1, and a clamping assembly 3 is installed on one side of the frame 2, a cross plate 4 is arranged on the top of the frame 2, and a docking assembly 5 is arranged on one side of the cross plate 4, a mold assembly 6 is installed on one side of the clamping assembly 3, the clamping assembly 3 includes a mounting chamber 301, and a first motor 302 is installed on one side of the mounting chamber 301, a first rotating rod 303 is installed on the output end of the first motor 302, and a first belt pulley group 304 is sleeved on the outer side of the first rotating rod 303, and one side of the first belt pulley group 304 is provided with a first pulley group 304. A worm 305 is installed on the side, and a fan-shaped worm wheel 306 is installed on the upper end of the worm 305, a support plate 307 is installed on one side of the fan-shaped worm wheel 306, and a second rotating rod 308 is installed on one side of the rotating shaft center of the fan-shaped worm wheel 306, one end of the second rotating rod 308 is connected to a first gear 309, and a second gear 310 is installed on the lower end of the first gear 309, a first connecting rod 311 is connected to one side of the first gear 309, and a second connecting rod 312 is installed on one end of the first connecting rod 311, and a first hinge block 313 is installed on one end of the second connecting rod 312, and the first hinge block 313 is installed on one end of the second connecting rod 312. A mounting plate 314 is provided on one side of the block 313, the docking assembly 5 includes a second pulley group 501, and a third rotating rod 502 is installed on one side of the second pulley group 501, a pneumatic telescopic rod 503 is installed on the upper end of the cross plate 4, and a movable plate 504 is installed on the output end of the pneumatic telescopic rod 503, a slider 505 is installed on the lower end of the movable plate 504, a slide groove 506 is opened on the cross plate 4 at a position corresponding to the movement of the slider 505, a push plate 507 is installed on the lower end of the slider 505, a latch tooth 508 is provided on the outer side of the third rotating rod 502, and a push plate 507 is provided on one side. A movable rotating rod 509 is provided, and a protrusion 510 is provided at one end of the movable rotating rod 509, the mold assembly 6 includes a first mounting frame 601, and a second mounting frame 602 is provided on one side of the first mounting frame 601, and heat dissipation holes 603 are opened on the first mounting frame 601 and the second mounting frame 602, a first fixing plate 604 is symmetrically installed inside the first mounting frame 601, and a first mold 605 is provided on one side of the first fixing plate 604, a second mold 606 is provided on one side of the first mold 605, and a guide rod 607 is symmetrically installed on one side of the second mold 606.

[0025] In this embodiment, the base 1 provides a basic support structure, provides a stable installation platform for the frame 2 and other components, ensures that the entire device remains stable during the iron mold sand casting process, prevents mold displacement or shaking caused by unstable support, and affects casting accuracy. The slider rail structure is installed and connected to the first installation frame 601 and the first installation frame 601 to ensure the stability of the mold assembly 6. The frame 2 installs the mold clamping assembly 3 on one side to provide installation and operation space for the mold clamping operation. At the same time, it supports the cross plate 4 at the top so that the docking assembly 5 can be installed and work normally, constructing the main frame of the entire mold assembly to ensure the coordinated operation of the components. The installation bin 301 protects and guards the internal transmission components and plays a certain role in the internal components. The first motor 302 serves as the power source of the mold clamping assembly 3 and provides rotational power. When the first motor 302 is started, its output end drives the first rotating rod 303 to rotate, providing initial power for a series of subsequent transmissions and controlling the start and speed of the mold clamping action. The first rotating rod 303 transmits the power of the first motor 302 to the first pulley set 304. The first pulley set 304 transmits the power stably to the worm 305 through the belt transmission method. At the same time, a certain speed change function can be achieved according to the diameter ratio of the pulley to meet the needs of different mold clamping speeds. The worm 305 and the fan-shaped worm wheel 306 form a worm gear transmission mechanism. The rotational motion of the worm 305 is converted into the rotation of the fan-shaped worm wheel 306. This transmission method has It has a larger transmission ratio, which increases the output torque and makes the subsequent mold closing action more stable and powerful. At the same time, the worm gear transmission has self-locking property. After the mold closing is completed, it can prevent the mold from opening automatically due to external force, thereby ensuring the stability of the mold closing state. The support plate 307 provides a certain support for the stable operation of the fan-shaped worm wheel 306 and the first gear 309 and the second gear 310. The support plates 307 are multiple groups, which are symmetrically arranged on both sides of the first gear 309 and the second gear 310. When the fan-shaped worm wheel 306 rotates, it drives the second rotating rod 308 to rotate, and the first gear 309 connected to the second rotating rod 308 rotates accordingly. The first gear 309 and the second gear 310 are meshed with each other, and the rotation direction of the first gear 309 is changed to achieve rotation in the opposite direction. Output, providing power input in different directions for the subsequent movement of the connecting rod mechanism. When the first gear 309 and the second gear 310 rotate, the first connecting rod 311 connected thereto changes its angle, driving the second connecting rod 312 to move. The second connecting rod 312 is hinged to the mounting plate 314 through the first hinge block 313, so that the mounting plate 314 can be adjusted in the horizontal direction. The mounting plate 314 is slidably arranged on one side of the mounting bin 301 to ensure the stability of the movement of the mounting plate 314. Since the mounting plate 314 is respectively installed with the first mounting frame 601 and the second mounting frame 602 of the mold assembly 6, the movement of the connecting rod mechanism realizes the mutual approach or distance between the first mold 605 and the second mold 606, completing the mold closing and mold opening actions.And through the movement of the connecting rod mechanism, the position and speed of the mold closing can be accurately controlled to improve the accuracy and stability of the mold closing, and the power transmission path starting from the first motor 302 is symmetrical when connecting the first installation frame 601 and the second installation frame 602. The first pulley group 304 drives the worm 305, and then drives the fan-shaped worm wheel 306, and then connects the first gear 309 through the second rotating rod 308. In this power transmission process, in the transmission structure corresponding to the second installation frame 602, there is a completely identical and symmetrical setting, which ensures that the power size, direction and transmission efficiency obtained on both sides are consistent, so that the first mold 605 and the second mold 606 move synchronously, and the second pulley group 501, one end of which is connected to the first rotating rod 303, and the other end is connected to the third rotating rod. The third rotating rod 509 is connected to the first rotating rod 303, and the power of the first rotating rod 303 is transmitted to the third rotating rod 502, so that the third rotating rod 502 can rotate, realize the transmission and distribution of power, and provide a power source for the subsequent rotation of the moving rotating rod 509. The latching teeth 508 arranged on the outer side of the third rotating rod 502 are engaged with the moving rotating rod 509 and are slidably arranged. When the third rotating rod 502 rotates, it drives the moving rotating rod 509 to rotate. At the same time, the moving rotating rod 509 can move axially under the action of the latching teeth 508. This structural design enables the moving rotating rod 509 to adjust its position while rotating, and provides the necessary movement mode for the subsequent docking of the protrusion 510 with the corresponding structure in the mold assembly 6. The moving rotating rod 509 passes through the first mounting frame 601 and the first fixed plate 604, the pneumatic telescopic rod 503 is installed at the upper end of the horizontal plate 4, and its output end is connected to the moving plate 504. When the pneumatic telescopic rod 503 is working, it pushes the moving plate 504 to move, and the slider 505 installed at the lower end of the moving plate 504 slides in the slide groove 506 provided in the horizontal plate 4 to ensure the stability and straightness of the movement of the moving plate 504. The movement of the moving plate 504 drives the push plate 507 to move, and the push plate 507 further pushes the moving rotating rod 509 to move, so that the protrusion 510 on the moving rotating rod 509 can be accurately docked. Through the precise control of the pneumatic telescopic rod 503, the docking action can be completed quickly and accurately, thereby improving the production efficiency and docking accuracy. The protrusion 510 is installed at one end of the moving rotating rod 509, and is used to dock with the concave block 701. After that, the rotation of the movable rotating rod 509 drives it to rotate to realize specific functions. The first installation frame 601 and the second installation frame 602 provide a structural frame for installing and fixing the first mold 605 and the second mold 606. At the same time, the opening and closing movements between them realize the mold closing and opening operations of the mold, and form a cavity during the casting process to facilitate casting. In order to ensure the stable operation of the iron mold sand coating process in the first mold 605 and the second mold 606, sand feeding parts and temperature control parts are specially set in these two molds. The sand feeding parts can accurately and efficiently transport the coated sand to the mold cavity, ensuring the timeliness and stability of the sand supply, laying the foundation for casting high-quality sand molds, and the temperature control parts can accurately regulate the mold temperature.The mold is always kept in a suitable working temperature range. In this way, it can ensure that the coated sand has good fluidity and adhesion and is evenly coated on the surface of the iron mold, and can effectively avoid sand mold quality problems caused by abnormal temperature, such as sand mold cracking, pores and other defects. Through the coordinated work of the sand feeding parts and the temperature control parts, the operating reliability and casting quality of the iron mold sand coating process in the first mold 605 and the second mold 606 are greatly improved. The heat dissipation holes 603 are opened on the first mounting frame 601 and the second mounting frame 602. During the iron mold sand coating casting process, the heat dissipation holes 603 can increase the contact area between the mold and the outside air, promote air circulation, speed up the heat dissipation speed of the mold, prevent the mold from deforming due to overheating, and affect The first fixing plate 604 is symmetrically installed inside the first mounting frame 601 to play a certain supporting role. The first mold 605 and the second mold 606 are the core components of the iron mold sand casting. After the mold is closed, the two form a cavity of a specific shape to form the required casting shape. The guide rod 607 is symmetrically installed on one side of the second mold 606. During the mold closing process, the guide rod 607 is inserted into the first mold 605 to play a guiding role, ensuring that the first mold 605 and the second mold 606 can be accurately aligned during the mold closing, improving the mold closing accuracy, and reducing the casting defects caused by mold closing deviation, such as flash and burrs, thereby improving the quality and dimensional accuracy of the casting.

[0026] Specifically, the first motor 302 is detachably arranged on one side of the installation chamber 301, the first rotating rod 303 passes through the installation chamber 301 and extends to its outside, one end of the first pulley group 304 is sleeved on the outside of the first rotating rod 303, and the other end of the first pulley group 304 is sleeved on the outside of the worm 305.

[0027] In this embodiment, the first motor 302 serves as the power source of the entire mold clamping assembly 3. It may malfunction during long-term operation. It is detachably arranged on one side of the mounting chamber 301 to facilitate maintenance or replacement. One end of the first rotating rod 303 is connected to the output end of the first motor 302, and the other end extends into the mounting chamber 301 and is connected to the first pulley set 304, acting as a bridge to transmit the rotational power output by the first motor 302 to the worm 305, thereby driving the worm 305 to rotate.

[0028] Specifically, the fan-shaped worm wheel 306 is meshed with the worm 305 , one end of the second rotating rod 308 is connected to the center position of the rotating shaft of the fan-shaped worm wheel 306 , and the other end of the second rotating rod 308 is connected to the center position of the rotating shaft of the first gear 309 , and the first gear 309 is meshed with the second gear 310 .

[0029] In this embodiment, the worm 305 is driven by the first pulley group 304 to rotate. Since the fan-shaped worm wheel 306 is meshed with the worm 305, the rotation of the worm 305 will drive the fan-shaped worm wheel 306 to rotate. The transmission mode of the worm wheel and worm achieves a larger transmission ratio, provides a larger torque, and has a self-locking function, which helps to ensure the stability and accuracy of the mold closing process and prevents the mold from opening automatically due to external forces after the mold closing. One end of the second rotating rod 308 is connected to the center position of the rotating shaft of the fan-shaped worm wheel 306, and the other end is connected to the first gear 30 9 is connected, and its function is to transmit the rotation of the fan-shaped worm wheel 306 to the first gear 309, so that the fan-shaped worm wheel 306 can drive the first gear 309 to rotate around the axis of the second rotating rod 308 when rotating, thereby transmitting the power from the worm gear transmission mechanism to the subsequent gear transmission mechanism, realizing the effective transmission and conversion of power to drive the mold to close or open the mold. The first gear 309 rotates under the drive of the second rotating rod 308, and because it is meshed with the second gear 310, it will drive the second gear 310 to rotate in the opposite direction.

[0030] Specifically, there are multiple groups of first connecting rods 311, and the multiple groups of first connecting rods 311 are fixedly connected to the central axes of the first gear 309 and the second gear 310 respectively. One end of the first connecting rod 311 is rotatably connected to one end of the second connecting rod 312. The number of the second connecting rods 312 matches that of the first connecting rods 311, and the second connecting rods 312 are hinged to the mounting plate 314 through the first hinge block 313.

[0031] In this embodiment, since the first gear 309 and the second gear 310 are meshed with each other, the rotation of the first gear 309 causes the second gear 310 to rotate in the opposite direction. During this transmission process, the first connecting rod 311 fixed on the central axis of the first gear 309 and the second gear 310 respectively rotates accordingly. The rotation of the first connecting rod 311 drives the second connecting rod 312 rotatably connected thereto to change its angle. Multiple groups of second connecting rods 312 are hinged to the mounting plate 314 through the first hinge block 313. The change in the angle of the second connecting rod 312 will pull or push the mounting plate 314. Since the entire structure is symmetrical about the central axis of the mold assembly 6, the mounting plates 314 symmetrically arranged on both sides will move simultaneously under the action of the second connecting rod 312 and approach each other. The first mold 605 and the second mold 606 are respectively installed on the corresponding mounting plates 314. The approach of the mounting plates 314 naturally drives the first mold 605 and the second mold 606 to approach each other, thereby realizing the mold closing operation.

[0032] Specifically, one end of the second pulley group 501 is sleeved on the outside of the first rotating rod 303, and the other end of the second pulley group 501 is sleeved on the outside of the third rotating rod 502. The pneumatic telescopic rod 503 is detachably arranged at the upper end of the horizontal plate 4. The slider 505 is slidably arranged in the slide groove 506. The third rotating rod 502 passes through the pushing plate 507 and extends to its outside. The inner cavity of the movable rotating rod 509 fits with the latch tooth 508, and one end of the movable rotating rod 509 is installed together with the pushing plate 507 through a bearing.

[0033] In this embodiment, one end of the second pulley group 501 is sleeved on the outside of the first rotating rod 303, and the other end is sleeved on the outside of the third rotating rod 502, so that the power output by the first motor 302 and transmitted through the first rotating rod 303 is distributed and transmitted to the third rotating rod 502, so that the third rotating rod 502 can rotate under the drive of the first motor 302, and the pneumatic telescopic rod 503 is installed on the upper end of the horizontal plate 4 and is detachably arranged, and its output end is connected to the movable plate 504. When working, by controlling the extension and retraction of the pneumatic telescopic rod 503, the position of the movable plate 504 can be accurately controlled. During the docking process, the movable plate 504 can be accurately pushed according to the actual position of the mold assembly 6 and the docking requirements, thereby driving the push plate 507, the movable rotating rod 509 and other components connected thereto to move, so that the protrusion 510 on the movable rotating rod 509 can be accurately docked with the concave block 701, which greatly improves the accuracy and reliability of the docking. The slider 505 is installed at the lower end of the movable plate 504 and is slidably arranged in the slide groove 506 opened in the horizontal plate 4. The third rotating rod 502 is driven by the second pulley group 501 to rotate, and the third rotating rod 502 penetrates the pushing plate 507 and extends to the outside, and fits with the moving rotating rod 509 through the latching tooth 508. When the third rotating rod 502 rotates, it can drive the moving rotating rod 509 to rotate. At the same time, when the pneumatic telescopic rod 503 pushes the moving plate 504 to move, the pushing plate 507 can push the moving rotating rod 509 to move along the axial direction of the third rotating rod 502, realizing the dual functions of power transmission and position adjustment, so that the moving rotating rod 509 can accurately adjust its position while rotating to meet the complex action requirements of docking.

[0034] Specifically, the protrusion 510 matches the recessed block 701, the mounting plates 314 are divided into two groups, the first mounting frame 601 is detachably provided on one side of one group of mounting plates 314, the second mounting frame 602 is detachably provided on one side of the other group of mounting plates 314, and there are multiple groups of heat dissipation holes 603, which are evenly arranged on the first mounting frame 601 and the second mounting frame 602.

[0035] In this embodiment, the protrusion 510 is matched with the recessed block 701, and the protrusion 510 is used to rotate and drive the recessed block 701 to rotate. The two groups of mounting plates 314 provide support and fixing bases for the first mounting frame 601 and the second mounting frame 602 respectively. The first mounting frame 601 is detachably set on one side of one group of mounting plates 314, and the second mounting frame 602 is detachably set on one side of the other group of mounting plates 314. The correct position is maintained during the mold closing and mold opening processes. Multiple groups of heat dissipation holes 603 are evenly arranged on the first mounting frame 601 and the second mounting frame 602. During the iron mold sand casting process, the mold will absorb a large amount of heat. The heat dissipation holes 603 increase the contact area between the mold and the outside air, promote air circulation, and accelerate heat dissipation.

[0036] See also Figure 5-Figure 7 A mold assembly for iron mold sand-coated casting, and an auxiliary fastening assembly 7 is installed inside the mold assembly 6, the auxiliary fastening assembly 7 includes a concave block 701, and a first connecting rod 702 is provided at one end of the concave block 701, a thread 703 is provided on the outer side of the first connecting rod 702, and a concave hole 704 with a trapezoidal cross-section is opened at one end of the inner side of the first connecting rod 702, a fixing frame 705 is installed inside the first mold 605, a clamping piece 706 is placed at one end of the first connecting rod 702, and a first bevel gear 707 is sleeved on the outer side of the first connecting rod 702, a supporting ring 708 is provided on one side of the first bevel gear 707, and a second bevel gear 709 is provided at the lower end of the first bevel gear 707, and a screw rod 710 is provided at the lower end of the second bevel gear 709.

[0037] In this embodiment, the concave block 701 serves as the starting power receiving end of the auxiliary fastening assembly 7. When the matching protrusion 510 is engaged and driven to rotate, the concave block 701 rotates synchronously, thereby driving the first connecting rod 702 connected thereto to rotate. The thread 703 arranged on the outer side of the first connecting rod 702 is threadedly connected to the fixing frame 705. As the first connecting rod 702 rotates, the first connecting rod 702 moves in the axial direction due to the effect of the thread. At the same time, a concave hole 704 with a trapezoidal cross-section is provided inside the first connecting rod 702. During its axial movement, the inner wall of the concave hole 704 gradually moves. The outer side of the clamping piece 706 placed at one end is gradually pressed, so that the first connecting rod 702 can convert the rotational motion into a pressing force on the clamping piece 706. By accurately controlling the rotation angle and number of turns of the first connecting rod 702, the degree of pressing on the clamping piece 706 can be accurately adjusted. Under the action of the first connecting rod 702, the clamping piece 706 continuously presses the guide rod 607. The guide rod 607 is symmetrically installed on one side of the second mold 606, and plays an important guiding and positioning role in the mold closing process. By tightening the guide rod 607 with the clamping piece 706, it can be ensured that the first mold 605 and the second mold 606 are in contact with each other during the casting process. The relative position of the two molds 606 is stable, which prevents the molds from being displaced or misaligned due to external forces, thereby improving the accuracy and quality of the casting. When the first connecting rod 702 rotates, it drives the first bevel gear 707 sleeved on its outer side to rotate synchronously. Since the first connecting rod 702 is engaged with the first bevel gear 707 and can be slidably arranged, the first bevel gear 707 and the second bevel gear 709 are meshed with each other, and the direction of the rotational power of the first connecting rod 702 is changed by 90 degrees and transmitted to the second bevel gear 709, and the ring 708 is arranged on one side of the first bevel gear 707, which plays a role in limiting the position of the first bevel gear 707, ensuring In order to ensure its stability during rotation, avoid axial movement, and ensure the accuracy and reliability of power transmission, the second bevel gear 709 is installed at both ends of the screw rod 710, and multiple groups of second bevel gears 709 are symmetrically arranged. When the first bevel gear 707 drives the second bevel gear 709 to rotate, the screw rod 710 rotates accordingly. The rotation of the screw rod 710 drives another group of symmetrically arranged second bevel gears 709 connected thereto to rotate, and the one-to-one corresponding first bevel gears 707 are arranged in reverse, ensuring that the corresponding first connecting rod 702 rotates synchronously, thereby enabling the symmetrically distributed guide rods 607 to achieve comprehensive and synchronous tightening operations.

[0038] Specifically, one end of the first connecting rod 702 is threadedly connected to the fixed frame 705 through a thread 703, the first bevel gear 707 and the first connecting rod 702 are clamped and slidably connected, one end of the clamping piece 706 is set in the recessed hole 704, the guide rod 607 passes through the clamping piece 706 and extends into the recessed hole 704, and the abutment ring 708 is against one side of the fixed frame 705, the second bevel gear 709 is meshed with the first bevel gear 707, the second bevel gear 709 is divided into multiple groups, and the multiple groups of second bevel gears 709 are symmetrically arranged at both ends of the screw rod 710, and the first bevel gear 707 is divided into multiple groups, and the multiple groups of first bevel gears 707 are relatively arranged.

[0039] In this embodiment, one end of the first connecting rod 702 is threadedly connected to the fixed frame 705 through a thread 703, which can achieve a tight and stable connection between the two. During the iron mold sand casting process, the mold will be subjected to greater pressure and vibration. This threaded connection method can effectively resist these external forces and prevent the first connecting rod 702 from loosening or separating from the fixed frame 705. The first bevel gear 707 and the first connecting rod 702 are clamped and slidably connected. The process in which the first connecting rod 702 rotates and generates radial movement makes the first bevel gear 707 only rotate without generating radial movement, and the first bevel gear 707 is limited by the ring 708 to prevent its radial movement. The clamping piece 706 is arranged on the outside of the guide rod 607. The cross-section of the concave hole 704 in the middle of the first connecting rod 702 is a trapezoidal structure. As the first connecting rod 702 rotates, one end thereof gradually presses the outside of the clamping piece 706, prompting the clamping piece 706 to continuously press the guide rod 607, thereby achieving precise tightening of the position of the guide rod 607.

[0040] See also Figure 8-Figure 9 A mold assembly for iron mold sand casting, a uniform assembly 8 is installed inside the mold assembly 6, the uniform assembly 8 includes a second motor 801, an L-shaped mounting plate 802 is arranged on one side of the second motor 801, and a third gear 803 is arranged on the output end of the second motor 801, a gear ring 804 is installed on one side of the third gear 803, and a first set of rods 805 is arranged on one side of the gear ring 804, a second set of rods 806 is sleeved on one side of the first set of rods 805, and a first spring 807 is sleeved on the outer side of the second set of rods 806, a rotating ejector rod 808 is installed on one side of the second mold 606, and a rotating ejector rod 808 is installed on one side of the second mold 606. A base plate 809 is provided at one end of the movable push rod 808, and a rotation groove 810 is opened on the base plate 809 at a position corresponding to the rotation of the rotating push rod 808, a rotating block 811 is provided on the rear side of the base plate 809, and an adjusting screw 812 is provided on one side of the rotating block 811, a second hinge block 813 is provided on one side of the first fixed plate 604, and a second connecting rod 814 is provided on one side of the second hinge block 813, a third sleeve rod 815 is installed in the middle position of the second mold 606, a second spring 816 is sleeved on the outer side of the third sleeve rod 815, and a fourth sleeve rod 817 is provided on one side of the third sleeve rod 815.

[0041] In this embodiment, the second motor 801 serves as the core power source of the uniform component 8, and the L-shaped mounting plate 802 provides a certain support for the stable operation of the third gear 803 and the gear ring 804. The third gear 803 and the gear ring 804 are meshed with each other to transmit the rotational power output by the second motor 801 to the gear ring 804. By reasonably designing the gear ratio of the third gear 803 and the gear ring 804, the speed change function can be achieved. The first set of rods 805 are connected to the gear ring 804, and the rotation of the gear ring 804 drives the first set of rods 805 to rotate synchronously. The second set of rods 806 is clamped with the first set of rods 805, and the two can slide relative to each other. The rotation of the first set of rods 805 can drive The second set of rods 806 is driven to rotate, thereby driving the first mold 605 installed at one end of the second set of rods 806 to rotate. During the rotation process, the mold continuously changes its angle, and gravity and centrifugal force are used to make the coated sand more evenly distributed in the mold cavity, effectively reducing the generation of defects such as uneven sand layer thickness and bubbles. The reciprocating rotation of the second motor 801 is controlled according to a certain rule and path. This regular movement can avoid the entanglement of various pipelines, rods, etc. connected to the mold. The rotating ejector rod 808 is installed on one side of the second mold 606. When the rotating ejector rod 808 rotates, it slides in the rotating groove 810. The operator rotates the rotating block 811. The adjusting screw 812 is driven to rotate. Since the adjusting screw 812 is threadedly connected to the first fixed plate 604, the rotation of the screw will cause it to move in the axial direction. Since one end of the adjusting screw 812 is in contact with the bottom plate 809, the axial movement of the screw will push one end of the bottom plate 809 to rise or fall, thereby changing the inclination angle of the bottom plate 809. By accurately adjusting the inclination angle of the bottom plate 809, the sliding condition of the rotating ejector 808 in the rotating groove 810 can be changed, thereby accurately controlling the amplitude and frequency of the forward and backward movement of the second mold 606 and the first mold 605, so as to achieve the best uniform filling effect of the coated sand in the mold cavity. In the middle position, a third set of rods 815 is installed, which are connected to the fourth set of rods 817 by means of snap-fitting and sliding, and a second spring 816 mounted on the outside of the third set of rods 815 can flexibly and accurately adjust the relative distance between the third set of rods 815 and the fourth set of rods 817, which not only provides stable and reliable support for the second mold 606, effectively enhances the stability of the mold structure, but also plays a vital role in ensuring the subsequent forward and backward movement of the second mold 606 and the first mold 605, ensuring that the movement can be smoothly realized, and laying a solid foundation for the precise operation of the mold and the high-quality molding of the casting during the iron mold sand casting process.

[0042] Specifically, the second motor 801 is detachably arranged in the first installation frame 601, the output end of the second motor 801 passes through the L-shaped mounting plate 802 and extends to its outside, the L-shaped mounting plate 802 is fixedly arranged in the first installation frame 601, the third gear 803 is meshed with the gear ring 804, the second set of rods 806 is clamped and slidably arranged with the first set of rods 805, one end of the second set of rods 806 is detachably connected to the first mold 605, the rotating top rod 808 is detachably arranged on one side of the second mold 606, and the rotating top rod 808 is slidably arranged in the rotating groove 810.

[0043] In this embodiment, the second motor 801 is detachable in the first installation frame 601. When a fault occurs, it can be easily removed from the first installation frame 601 for repair or direct replacement. The second motor 801 drives the third gear 803 to rotate, and the rotational power is transmitted to the gear ring 804, causing the gear ring 804 to start rotating. The second set of rods 806 is engaged with the first set of rods 805. When the first set of rods 805 rotates with the gear ring 804, it can drive the second set of rods 806 to rotate synchronously, and then transmit the rotational power to the first mold 605, so that the first mold 605 can realize rotational motion, promoting the uniform distribution of the coated sand in the mold. At the same time, the second set of rods 806 and the first set of rods 805 are slidably arranged to facilitate the process of moving the mold back and forth, and the rotation groove 810 is used to ensure the stability of the rotation of the rotating top rod 808.

[0044] Specifically, the adjustment screw 812 passes through a group of first fixed plates 604 and is threadedly connected thereto, and one end of the adjustment screw 812 is in contact with the base plate 809, one end of the second connecting rod 814 is detachably connected to the base plate 809, and the other end of the second connecting rod 814 is hinged to the first fixed plate 604 through the second hinge block 813, the third set of rods 815 is clamped and slidably connected to the fourth set of rods 817, and one end of the fourth set of rods 817 is detachably connected to a group of first fixed plates 604.

[0045] In this embodiment, an adjusting screw 812 is used to penetrate a group of first fixed plates 604 and is threadedly connected thereto. The operator can rotate the adjusting screw 812 and use the transmission principle of the thread to move it in the axial direction. Since one end of the adjusting screw 812 is in contact with the bottom plate 809, the axial movement of the adjusting screw 812 will push one end of the bottom plate 809 to rise or fall, thereby changing the inclination angle of the bottom plate 809. In the process of iron mold sand coating casting, different castings have different requirements for the movement mode of the mold and the distribution of the coated sand. By accurately adjusting the inclination angle of the bottom plate 809, the sliding condition of the rotating push rod 808 in the rotating groove 810 can be changed, thereby accurately controlling the amplitude and frequency of the forward and backward movement of the second mold 606 and the first mold 605 connected thereto, so as to achieve uniform filling of the coated sand in the mold cavity and meet the needs of different casting processes. One end of the second connecting rod 814 is detachably connected to the bottom plate 809, and the other end is hinged to the first fixed plate 604 through the second hinge block 813 to play an auxiliary supporting role. The third set of rods 815 is clamped and slidably connected to the fourth set of rods 817, and one end of the fourth set of rods 817 is detachably connected to a group of first fixed plates 604. During the operation of the mold assembly 6, when the first mold 605 and the second mold 606 rotate and move back and forth, they may be impacted by various external forces, such as the impact force during the filling of coated sand, the inertia force during the opening and closing of the mold, etc. The slidable connection between the third set of rods 815 and the fourth set of rods 817 and the second spring 816 mounted on the outside of the third set of rods 815 can play an auxiliary role, making the movement of the mold more stable, and allowing the third set of rods 815 and the fourth set of rods 817 to be adaptively adjusted within a certain range according to changes in external forces.

[0046] During use, when it is necessary to drive the first mold 605 and the second mold 606 closer to each other to complete the mold closing process, the first motor 302 is started, and the first motor 302 drives the first rotating rod 303 to rotate. The rotational movement of the first rotating rod 303 is transmitted by means of the first pulley set 304, driving the worm 305 to rotate synchronously. The worm 305 is exquisitely meshed with the fan-shaped worm gear 306. The rotation of the worm 305 smoothly drives the fan-shaped worm gear 306 to operate. When the fan-shaped worm gear 306 rotates, the second rotating rod 308 connected to the center of its rotating shaft rotates synchronously, thereby driving the first gear 309 connected to the second rotating rod 308 to rotate. The first gear 309 is meshed with the second gear 310, and the rotation of the first gear 309 causes the second gear 310 to rotate in the opposite direction. The first gear 309 and the second gear 310 are respectively fixed with multiple sets of first connecting rods 311, and the rotation of the first connecting rod 311 drives the second connecting rod 312 rotatably connected thereto to change its angle. The multiple sets of second connecting rods 312 are hinged to the mounting plate 314 through the first hinge block 313, and finally the precise adjustment of the lateral position of the mounting plate 314 is achieved, so that the symmetrically arranged mounting plates 314 are close to each other, thereby driving the first mold 605 and the second mold 606 installed on the mounting plate 314 to approach each other. At the same time, the rotation of the first rotating rod 303 also drives the second pulley set 501 to operate, and the second pulley set 501 transmits power to the third rotating rod 502, driving the third rotating rod 502 to rotate. 508 is engaged with the moving rotating rod 509 and is slidably arranged. The rotation of the third rotating rod 502 drives the moving rotating rod 509 to rotate. At this time, the pneumatic telescopic rod 503 is started. The pneumatic telescopic rod 503 pushes the moving plate 504 to move. The movement of the moving plate 504 drives the slider 505 to slide in the slide groove 506. The movement of the slider 505 drives the push plate 507 to move. The movement of the push plate 507 causes the moving rotating rod 509 to move. The convex block 510 on the moving rotating rod 509 is accurately embedded in the concave block 701. At the same time, the rotation of the moving rotating rod 509 drives the concave block 701 to rotate, creating conditions for the subsequent startup of the auxiliary fastening component 7. When the first mold 605 and the second mold 606 are close to a suitable position, it is necessary to achieve a firm fit between the two to improve the structural stability. The rotation of the block 701 plays a key role. The rotation of the concave block 701 drives the first connecting rod 702 connected thereto to rotate synchronously. A thread 703 is provided on the outer side of the first connecting rod 702, which is threadedly connected to the fixing frame 705, and the cross-section of the concave hole 704 in the middle of the first connecting rod 702 is a trapezoidal structure. As the first connecting rod 702 rotates, one end thereof gradually presses the outer side of the clamping piece 706, prompting the clamping piece 706 to continuously press the guide rod 607, thereby achieving precise tightening of the position of the guide rod 607. At the same time, the first connecting rod 702 is engaged with the first bevel gear 707 and is slidably arranged. The rotation of the first connecting rod 702 drives the first bevel gear 707 to rotate, and the position of the first bevel gear 707 is limited by the abutting ring 708 to ensure its stable rotation.The first bevel gear 707 is meshed with the second bevel gear 709, and the rotation of the first bevel gear 707 drives the second bevel gear 709 to rotate. The second bevel gear 709 is installed at both ends of the screw rod 710. Multiple groups of second bevel gears 709 are symmetrically arranged. When the screw rod 710 rotates, it drives another group of symmetrically arranged second bevel gears 709 connected thereto to rotate, and finally realizes the comprehensive tightening of the symmetrically arranged guide rod 607; when it is necessary to promote the coated sand to evenly fill the mold cavity, the second motor 801 is started, and the second motor 801 drives the third gear 803 to rotate, and the rotation of the third gear 803 drives the gear ring 804 to rotate. Since the first set of rods 805 and the second set of rods 806 are clamped and slidably arranged, the rotation of the gear ring 804 drives the first set of rods 805 and the second set of rods 806 to rotate synchronously, and the rotation of the second set of rods 806 drives the first mold 605 to rotate, and the first The rotation of the mold 605 drives the second mold 606 to rotate. Since the third set of rods 815 and the fourth set of rods 817 are connected and slidably arranged, the rotation of the second mold 606 drives the third set of rods 815 and the fourth set of rods 817 to rotate. By rotating the rotating block 811, the rotation of the rotating block 811 drives the adjusting screw 812 to rotate. The adjusting screw 812 presses the bottom plate 809 to tilt. The tilt of the bottom plate 809 causes the rotating top rod 808 to slide in the rotating groove 810, and drives the second mold 606 and the first mold 605 to move forward and backward during the rotation process. In this process, the first set of rods 805 and the third set of rods 815 rotate and move forward and backward at the same time, so that the first spring 807 and the second spring 816 are elastically deformed. In this way, the first mold 605 and the second mold 606 are accurately controlled to rotate and move forward and backward repeatedly, so that the coated sand can evenly fill the mold cavity.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mold assembly for iron mold sand casting, comprising a base (1), characterized in that: A frame (2) is provided at the upper end of the base (1), and a clamping assembly (3) is installed on one side of the frame (2); a transverse plate (4) is provided at the top of the frame (2), and a docking assembly (5) is provided on one side of the transverse plate (4); a mold assembly (6) is installed on one side of the clamping assembly (3), and an auxiliary fastening assembly (7) is installed inside the mold assembly (6); The mold clamping assembly (3) comprises a mounting chamber (301), and a first motor (302) is mounted on one side of the mounting chamber (301), a first rotating rod (303) is mounted on the output end of the first motor (302), and a first belt pulley set (304) is sleeved on the outer side of the first rotating rod (303), a worm (305) is mounted on one side of the first belt pulley set (304), and a fan-shaped worm wheel (306) is arranged on the upper end of the worm (305), a support plate (307) is arranged on one side of the fan-shaped worm wheel (306), and the fan-shaped worm wheel (306) is provided with a support plate (307). A second rotating rod (308) is provided on one side of the center of the rotating shaft (306), one end of the second rotating rod (308) is connected to a first gear (309), and a second gear (310) is provided at the lower end of the first gear (309), one side of the first gear (309) is connected to a first connecting rod (311), and one end of the first connecting rod (311) is mounted with a second connecting rod (312), one end of the second connecting rod (312) is provided with a first hinge block (313), and one side of the first hinge block (313) is provided with a mounting plate (314); The docking assembly (5) comprises a second pulley group (501), and a third rotating rod (502) is installed on one side of the second pulley group (501); a pneumatic telescopic rod (503) is installed on the upper end of the transverse plate (4), and a movable plate (504) is installed on the output end of the pneumatic telescopic rod (503); a slider (505) is installed on the lower end of the movable plate (504); a slide groove (506) is provided on the transverse plate (4) at a position corresponding to the movement of the slider (505); a push plate (507) is installed on the lower end of the slider (505); a latching tooth (508) is provided on the outer side of the third rotating rod (502); a movable rotating rod (509) is provided on one side of the push plate (507), and a protrusion (510) is provided on one end of the movable rotating rod (509); The mold assembly (6) comprises a first mounting frame (601), and a second mounting frame (602) is arranged on one side of the first mounting frame (601), heat dissipation holes (603) are provided on the first mounting frame (601) and the second mounting frame (602), a first fixing plate (604) is symmetrically installed inside the first mounting frame (601), and a first mold (605) is arranged on one side of the first fixing plate (604), a second mold (606) is arranged on one side of the first mold (605), and a guide rod (607) is symmetrically installed on one side of the second mold (606); The auxiliary fastening assembly (7) comprises a recessed block (701), and a first connecting rod (702) is arranged at one end of the recessed block (701), a thread (703) is arranged on the outer side of the first connecting rod (702), and a recessed hole (704) with a trapezoidal cross section is opened at one end of the inside of the first connecting rod (702), a fixing frame (705) is installed inside the first mold (605), a clamping piece (706) is placed at one end of the first connecting rod (702), and a first bevel gear (707) is sleeved on the outer side of the first connecting rod (702), a stop ring (708) is arranged on one side of the first bevel gear (707), and a second bevel gear (709) is arranged at the lower end of the first bevel gear (707), and a screw rod (710) is arranged at the lower end of the second bevel gear (709).

2. The mold assembly for iron mold sand-coated casting according to claim 1, characterized in that: The first motor (302) is detachably arranged on one side of the installation chamber (301); the first rotating rod (303) passes through the installation chamber (301) and extends to the outside thereof; one end of the first belt pulley group (304) is sleeved on the outside of the first rotating rod (303); and the other end of the first belt pulley group (304) is sleeved on the outside of the worm (305).

3. The mold assembly for iron mold sand-coated casting according to claim 1, characterized in that: The fan-shaped worm wheel (306) is meshed with the worm (305), one end of the second rotating rod (308) is connected to the center position of the rotating shaft of the fan-shaped worm wheel (306), and the other end of the second rotating rod (308) is connected to the center position of the rotating shaft of the first gear (309), and the first gear (309) is meshed with the second gear (310).

4. The mold assembly for iron mold sand-coated casting according to claim 1, characterized in that: The first connecting rods (311) are multiple groups, and the multiple groups of the first connecting rods (311) are respectively fixedly connected to the central axis of the first gear (309) and the second gear (310), one end of the first connecting rod (311) is rotatably connected to one end of the second connecting rod (312), the number of the second connecting rods (312) matches that of the first connecting rods (311), and the second connecting rods (312) are hinged to the mounting plate (314) through the first hinge block (313).

5. The mold assembly for iron mold sand-coated casting according to claim 1, characterized in that: One end of the second pulley group (501) is sleeved on the outside of the first rotating rod (303), and the other end of the second pulley group (501) is sleeved on the outside of the third rotating rod (502). The pneumatic telescopic rod (503) is detachably arranged on the upper end of the horizontal plate (4). The slider (505) is slidably arranged in the slide groove (506). The third rotating rod (502) penetrates the pushing plate (507) and extends to the outside thereof. The inner cavity of the movable rotating rod (509) is matched with the latch tooth (508), and one end of the movable rotating rod (509) is installed together with the pushing plate (507) through a bearing.

6. The mold assembly for iron mold sand-coated casting according to claim 1, characterized in that: The convex block (510) matches the concave block (701), the mounting plates (314) are in two groups, the first mounting frame (601) is detachably arranged on one side of one group of mounting plates (314), the second mounting frame (602) is detachably arranged on one side of another group of mounting plates (314), and the heat dissipation holes (603) are in multiple groups, and the multiple groups of heat dissipation holes (603) are evenly arranged on the first mounting frame (601) and the second mounting frame (602).

7. The mold assembly for iron mold sand-coated casting according to claim 1, characterized in that: One end of the first connecting rod (702) is threadedly connected to the fixed frame (705) through a thread (703); the first bevel gear (707) and the first connecting rod (702) are snap-fitted and slidably connected; one end of the clamping member (706) is arranged in the concave hole (704); the guide rod (607) passes through the clamping member (706) and extends into the concave hole (704); the abutting ring (708) abuts against one side of the fixed frame (705); the second bevel gear (709) is meshed with the first bevel gear (707); the second bevel gear (709) is provided in a plurality of groups, and the plurality of groups of the second bevel gears (709) are symmetrically arranged at both ends of the screw rod (710); the first bevel gear (707) is provided in a plurality of groups, and the plurality of groups of the first bevel gears (707) are relatively arranged.

8. The mold assembly for iron mold sand-coated casting according to claim 1, characterized in that: A uniform component (8) is installed inside the mold component (6), and the uniform component (8) comprises a second motor (801), an L-shaped mounting plate (802) is arranged on one side of the second motor (801), and a third gear (803) is arranged at the output end of the second motor (801), a gear ring (804) is installed on one side of the third gear (803), and a first set of rods (805) is arranged on one side of the gear ring (804), a second set of rods (806) is sleeved on one side of the first set of rods (805), and a first spring (807) is sleeved on the outer side of the second set of rods (806), and a rotating ejector rod (808) is installed on one side of the second mold (606), and the rotating ejector rod (808) is arranged on the outer side of the second mold (606). A bottom plate (809) is provided at one end, and a rotation groove (810) is provided on the bottom plate (809) at a position corresponding to the rotation of the rotating top rod (808); a rotating block (811) is provided on the rear side of the bottom plate (809); an adjusting screw (812) is provided on one side of the rotating block (811); a second hinge block (813) is provided on one side of the first fixed plate (604); a second connecting rod (814) is provided on one side of the second hinge block (813); a third sleeve rod (815) is installed at the middle position of the second mold (606); a second spring (816) is sleeved on the outer side of the third sleeve rod (815); and a fourth sleeve rod (817) is provided on one side of the third sleeve rod (815).

9. The mold assembly for iron mold sand-coated casting according to claim 8, characterized in that: The second motor (801) is detachably arranged in the first installation frame (601); the output end of the second motor (801) passes through the L-shaped installation plate (802) and extends to the outside thereof; the L-shaped installation plate (802) is fixedly arranged in the first installation frame (601); the third gear (803) is meshed with the gear ring (804); the second sleeve rod (806) is engaged with the first sleeve rod (805) and is slidably arranged; one end of the second sleeve rod (806) is detachably connected to the first mold (605); the rotating ejector rod (808) is detachably arranged on one side of the second mold (606); and the rotating ejector rod (808) is slidably arranged in the rotating groove (810).

10. The mold assembly for iron mold sand-coated casting according to claim 8, characterized in that: The adjusting screw (812) passes through a group of first fixing plates (604) and is threadedly connected thereto, and one end of the adjusting screw (812) contacts the bottom plate (809), one end of the second connecting rod (814) is detachably connected to the bottom plate (809), and the other end of the second connecting rod (814) is hinged to the first fixing plate (604) via a second hinge block (813), the third set of rods (815) is snap-fitted and slidably connected to the fourth set of rods (817), and one end of the fourth set of rods (817) is detachably connected to the group of first fixing plates (604).

Images