A sand core transfer device and molding machine

Abstract

This invention discloses a sand core transfer device for a molding machine and the molding machine itself, comprising: a rotating support, the rotating support having a support body, a geared disc, a swing shaft, and a first drive assembly; the geared disc is fixed below the support body for transmission connection, the geared disc's rotation shaft is arranged along the height direction, and can drive the support body to rotate in the horizontal direction; the swing shaft is located at the lower part of one side of the support body, and the swing shaft is arranged parallel to the horizontal direction; the first drive assembly is fixed to the support body and located at the upper part of the same side as the swing shaft; a first mold mounting plate having a first plate surface and a second plate surface arranged opposite to each other; the second plate surface has a first connecting seat and a second connecting seat; the first connecting seat is located at the lower part of the second plate surface and is sleeved on the swing shaft; the second connecting seat is connected to the first drive assembly; the first drive assembly can drive the first mold mounting plate to swing; the entire device completes the horizontal rotation and vertical tilting of the sand core through a mechanical structure, saving labor costs and improving production efficiency.

Description

Technical Field

[0001] This invention relates to a sand core transfer device and a molding machine, and more specifically, to a sand core transfer device and a molding machine for casting. Background Technology

[0002] A molding machine, also known as a "sand-shooting molding machine" or "sand-shooting machine," is a core-making device that uses coated sand to create cores. Molding machines are widely used in the production of casting cores where high appearance quality is required. Their working principle involves spraying core sand containing resin and other adhesives into a heated metal core box. After maintaining temperature and pressure for a certain time, the adhesive in the core sand near the metal core box melts, binding the sand particles together and hardening them. This forms a shell of a certain thickness along the inner wall of the metal core box. After the excess core sand is poured out, heating continues for a certain time to complete solidification. The metal core box is then opened, and the shell is ejected, resulting in a hollow, thin-shell sand core. Current technology uses a pusher structure on one side of the metal core box to eject the sand core from the mold. The sand core falls onto the molding machine platform and is then manually transported to the next process.

[0003] However, when it comes to forming large sand cores, the sand cores are too heavy for ordinary people to handle continuously, and the equipment for setting up multi-axis robotic arms to grab the sand cores is very expensive.

[0004] Therefore, how to improve existing molding machines to overcome the above-mentioned problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects or problems existing in the prior art and provide a sand core transfer device for a molding machine, comprising: a rotating support, the rotating support having a generally L-shaped support body, a geared disc, a swing shaft, and a first drive assembly; the geared disc is fixed below the support body for transmission connection, the geared disc's rotation shaft is arranged along the height direction, and can drive the support body to rotate in the horizontal direction; the swing shaft is located at the lower part of one side of the support body, and the swing shaft is arranged parallel to the horizontal direction; the first drive assembly is fixed to the support body and located at the upper part of the same side as the swing shaft; a first mold mounting plate having a first plate surface and a second plate surface arranged opposite to each other; the first plate surface is provided with a plurality of first mounting grooves and first mounting holes; the second plate surface is provided with a first connecting seat and a second connecting seat; the first connecting seat is located at the lower part of the second plate surface and is sleeved on the swing shaft. The second connecting seat connects to the first driving component; the first driving component can drive the first mold mounting plate to swing between the vertical and horizontal directions; the entire device is installed on the molding machine, and the driving component of the molding machine drives the gear plate to rotate the first mold mounting plate on the rotating bracket, which can change the orientation of the thin-shell sand core installed on the first mold mounting plate, and transfer the thin-shell sand core to an area outside the molding machine platform. Then, the first driving component drives the first mold mounting plate to tilt downwards to demold, and the thin-shell sand core can fall to the lower transfer device under the action of gravity and flow to the next process. The entire process of horizontal rotation and vertical tilting demolding of the thin-shell sand core is completed by the mechanical structure, without the need for manual handling. This not only saves labor costs and improves efficiency, but also makes the mechanical transfer process more stable and reliable, reducing the risk of damage to the sand core during manual transfer.

[0006] To achieve the above objectives, the following technical solution is adopted: A sand core transfer device for a molding machine includes: a rotating support, the rotating support having a support body, a geared disc, a swing shaft, and a first drive assembly; the geared disc is fixed below the support body for transmission connection, the geared disc's rotation shaft is arranged along the height direction, and can drive the support body to rotate in the horizontal direction; the swing shaft is located at the lower part of one side of the support body, and the swing shaft is arranged parallel to the horizontal direction; the first drive assembly is fixed to the support body and located above the swing shaft on the same side; a first mold mounting plate has a first plate surface and a second plate surface arranged opposite to each other; the first plate surface is provided with a plurality of first mounting grooves and first mounting holes; the second plate surface is provided with a first connecting seat and a second connecting seat; the first connecting seat is located below the second plate surface and sleeved on the swing shaft; the second connecting seat is connected to the first drive assembly; the first drive assembly can drive the first mold mounting plate to swing between the height direction and the horizontal direction.

[0007] Optionally, the first drive assembly consists of a hydraulic support and a hydraulic rod. The hydraulic support is fixed to the support body and located on the upper part of the same side as the swing shaft. The hydraulic rod has a sleeve, a shaft, and a rod body. The shaft is located on the side wall of the sleeve and inserted into a positioning hole on the hydraulic support. The rod body is inserted into the sleeve, and its end away from the sleeve is movably connected to the second connecting seat. The first drive assembly can be pushed away from the sleeve by hydraulic pressure provided by the hydraulic system, causing the first mold mounting plate to swing in the horizontal direction. The first drive assembly can also be pulled away from the sleeve by hydraulic pressure provided by the hydraulic system, causing the first mold mounting plate to swing in the vertical direction.

[0008] Optionally, the support body further includes a movable shaft assembly, an end plate, and a second drive assembly. The movable shaft assembly has a first movable shaft and a second movable shaft. The first movable shaft is inserted horizontally into the lower part of the support body, and a swing shaft is disposed at the first end of the first movable shaft. The second movable shaft is inserted horizontally into the upper part of the support body, and the second end of the second movable shaft is flush with the first end of the first movable shaft. The end plate has an assembly part and a drive assembly mounting part. Several assembly parts are respectively connected to the opposite end of the first end of the first movable shaft and the opposite end of the second movable shaft. The drive assembly mounting part is disposed between the several assembly parts, and the second drive assembly is disposed on the drive assembly mounting part for driving the end plate to move closer to or away from the support body along the extension direction of the first and second movable shafts, so as to drive the first mold mounting plate to move closer to or away from the support body.

[0009] Optionally, the second end of the second movable shaft is provided with an elastic element.

[0010] Optionally, the bracket body also has a cover plate, which is located on the top of the bracket body and covers the first movable shaft, the second movable shaft, the first drive assembly, and the second drive assembly.

[0011] Optionally, it also includes a sliding hammer assembly, which has a hammer base and a hammer body. The hammer base is located on the second surface of the first mold mounting plate, and the hammer body is located on the side of the hammer base away from the second surface. When the first mold mounting plate is perpendicular to the horizontal direction, there is a gap between the hammer body and the second surface. When the first mold mounting plate is parallel to the horizontal direction, the hammer body abuts against the second surface.

[0012] Optionally, the hammer base has a roughly comma-shaped irregular hole. The through direction of the irregular hole is parallel to the second plate surface and perpendicular to the plane where the swing direction of the first mold mounting plate is located. The irregular hole consists of interconnected small hole segments and large hole segments. The distance between the small hole segment and the swing shaft is less than the distance between the large hole segment and the swing shaft. The small hole segment is elongated, and the large hole segment is circular. The hole walls of the small hole segment and the large hole segment near the second plate surface are connected to form a slope. The distance between the slope surface near the small hole segment and the second plate surface is greater than the distance between the slope surface near the large hole segment and the second plate surface. The hammer body has a hammer shaft, a hammer head, and a hammer handle. The cross-section of the hammer shaft is elongated. The major diameter of the hammer shaft is greater than the minor diameter of the small hole segment, and the major diameter of the hammer shaft is less than the diameter of the large hole segment. The hammer head is connected to the hammer shaft through the hammer handle and can swing along a direction perpendicular to the through direction of the irregular hole.

[0013] Optionally, the angle α between the slope surface and the second plate surface is 2 to 15 degrees.

[0014] A molding machine, having the aforementioned sand core transfer device, further includes: a feeding section, located at the top of the frame body, having a feeding hopper, the outlet direction of the feeding hopper being downward along the height direction of the frame; a drainage section, located in the middle of the frame body and below the feeding section; a module section, located in the middle of the frame body and below the drainage section, having a second mold mounting plate located on one side of the frame body; the second mold mounting plate having a jetting through-hole and a second assembly groove penetrating the second mold mounting plate along the width direction of the frame body; a first drainage channel connecting the outlet of the feeding hopper and the jetting through-hole; the sand core transfer device, having... On one side of the frame body in the width direction, the second mold mounting plate is disposed opposite to the first mold mounting plate; the support part, located on the same side of the bottom of the frame body in the width direction as the module part, has: a first support frame and a third drive assembly, the first support frame having a support shaft, and the gear plate of the sand core transfer device being sleeved on the support shaft; the third drive assembly drives the gear plate to rotate the first mold mounting plate in a direction perpendicular to the height of the frame body; the control part, located on the other side of the frame body, is used to control each drive assembly; the power supply, electrically connected to the control part, is used to provide a power source.

[0015] Optionally, a transmission module is provided on the front side of the frame body in the thickness direction. The transmission module has: a transmission bracket, a first roller group, a second roller group, a conveyor belt and a fourth drive assembly. The transmission bracket is cuboid in shape. The first roller group and the second roller group are located at the upper ends of the transmission bracket in the length direction. The conveyor belt is wound between the first roller group and the second roller group. The upper surface of the conveyor belt is flush with or lower than the lower surface of the first mold mounting plate.

[0016] Compared to existing technologies, the above solution has the following beneficial effects: 1. The entire device is installed on the molding machine. The driving component of the molding machine drives the gear plate to rotate the first mold mounting plate on the rotating bracket, which can change the orientation of the thin-shell sand core mounted on the first mold mounting plate and transfer the thin-shell sand core to an area outside the molding machine platform. Then, the first driving component drives the first mold mounting plate to tilt downwards for demolding. The thin-shell sand core can fall to the transfer device below under the action of gravity and flow to the next process. The entire process of horizontal rotation and vertical tilting demolding of the thin-shell sand core is completed by the mechanical structure, without the need for manual handling. This not only saves labor costs and improves efficiency, but also makes the mechanical transfer process more stable and reliable, reducing the risk of damage to the sand core during manual transfer.

[0017] 2. The first drive assembly consists of a hydraulic support and a hydraulic rod. Based on the liquid pressure characteristics of the hydraulic system, a small amount of hydraulic pressure can drive the first mold mounting plate, which is loaded with a heavy sand core, to swing smoothly to the demolding position. This reduces the structural strength requirements of the hydraulic system, further improving the service life of the mechanism and reducing manufacturing costs.

[0018] 3. The movable shaft assembly, end plate, and second drive assembly of the support body cooperate to enable the sand core transfer device to translate the first mold mounting plate on the horizontal plane of the gear disc. The second drive assembly drives the first mold mounting plate away from the support body and presses it against the matching second mold mounting plate on the molding machine to form a molding space for core sand spraying molding. Alternatively, it drives the first mold mounting plate closer to the support body and separates it from the matching second mold mounting plate on the molding machine to complete the mold separation and transfer. The thin-shell sand core after mold separation is left on the first mold mounting plate. The second drive assembly adjusts the first mold mounting plate to align with the lower transfer device and then controls the first drive assembly to drive the first mold mounting plate to tilt downwards for demolding. The thin-shell sand core can fall to the lower transfer device under gravity and flow to the next process. The falling position of the thin-shell sand core has a certain adjustment space to facilitate the laying and adjustment of the transfer device.

[0019] 4. The second end of the second movable shaft is provided with an elastic element to provide a buffer when the first mold mounting plate swings upward to abut against the second end, so as to avoid the first mold mounting plate directly hitting the second movable shaft and causing damage to the movable shaft assembly, thereby improving the service life of the overall mechanism.

[0020] 5. The cover plate on the top of the bracket body can prevent dust or debris flying in the workshop from falling onto the first movable shaft, the second movable shaft, the first drive assembly, and the second drive assembly, thus preventing accelerated wear of the moving mechanism and further improving the overall accuracy and service life of the mechanism.

[0021] 6. The sliding hammer assembly is used to shake the thin-shell sand core that is attracted to the first mold mounting plate into the demolding state parallel to the horizontal plane when the first mold mounting plate swings. At the same time, it can also shake off the core sand that is stuck to the inner surface of the mold on the side of the first mold mounting plate, so as to avoid affecting the sand core of the next spray molding and further improve the product yield.

[0022] 7. The sliding hammer assembly features a shaped hammer seat and a long-hole hammer shaft. When the first mold mounting plate is perpendicular to the horizontal plane, the hammer falls into the small hole section under gravity and is locked in the swing direction. When the first mold mounting plate swings to a specific angle parallel to the horizontal plane, the hammer generates a slope component force under gravity, and the hammer shaft slides from the small hole section to the large hole section. When the first mold mounting plate continues to swing to be parallel to the horizontal plane, the hammer shaft is located in the large hole section, the swing direction of the hammer is unlocked, and the hammer swings downward under gravity, striking the second plate surface of the first mold mounting plate to generate vibration. The entire sliding hammer assembly requires no additional power source; it relies solely on the weight of the hammer to achieve the suspension and striking vibration of the hammer during the up-and-down swinging process of the first mold mounting plate. This not only reduces the manufacturing cost of the equipment but also reduces the overall failure rate due to the purely mechanical structure, further extending the overall service life. Furthermore, the sliding hammer assembly has a simple structure and is easy to maintain.

[0023] 8. The angle α between the ramp surface and the second plate surface is 2 to 15 degrees, which can ensure that the hammer body slides to the large hole section to unlock the swing impact capability when the first mold mounting plate swings to near the horizontal plane, further improving the effect of shaking off the core sand adhering to the inner surface of the mold on the side of the first mold mounting plate.

[0024] 9. When the molding machine is equipped with the aforementioned sand core transfer device, the entire process of horizontal rotation and vertical tilting demolding of the thin-shell sand core can be completed by mechanical structure, eliminating the need for manual handling. This not only saves labor costs and improves efficiency, but also makes the mechanical transfer process more stable and reliable, reducing the risk of damaging the sand core during manual transfer.

[0025] 10. The transmission module and sand core transfer device located on the front side of the frame body in the thickness direction can work together to realize the mechanical automation of the entire process from forming to transferring thin-shell sand cores. There is no need for manual handling of sand cores. It can be adapted to large sand cores and automated laying of production lines, with high adaptability and reduced production costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of a state according to an embodiment of the present invention; Figure 2 This is a front view of a state according to an embodiment of the present invention; Figure 3 This is a left view of a state according to an embodiment of the present invention; Figure 4 This is a top view of a state according to an embodiment of the present invention; Figure 5 This is a left view of state two in Embodiment 1 of the present invention; Figure 6 This is a left view of state three in Embodiment 1 of the present invention; Figure 7 This is a perspective view of the slide weight assembly of the present invention. Figure 8 This is a left view of the slide assembly of the present invention in one state; Figure 9 This is one of the left views of the slide assembly in state two of the present invention; Figure 10 This is the second left view of the slide assembly in state two of the present invention; Figure 11 This is a left view of the slide assembly of the present invention in three states; Figure 12 This is a perspective view of Embodiment 2 of the present invention.

[0028] Explanation of key figure labels: 100 - Rotary support; 110 - Support body; 120 - Gear disc; 130 - Swing shaft; 140 - Hydraulic support seat; 150 - Hydraulic rod; 200 - First mold mounting plate; 210 - First assembly slot; 220 - First assembly hole; 230 - First connecting seat; 240 - Second connecting seat; 300 - Movable shaft assembly; 310 - First movable shaft; 320 - Second movable shaft; 321 - Spring; 400 - End plate; 410 - Drive assembly mounting section; 500-Sliding hammer assembly; 510-Hammer base; 520-Irregular hole; 521-Small hole section; 522-First end; 523-Second end; 524-Large hole section; 525-Third end; 526-Protrusion; 530-Hammer body; 531-Hammer shaft; 532-Hammer head; 533-Hammer handle; 600 - Frame Body; 710 - Feeding section; 711 - Feeding hopper; 720 - Drainage section; 730 - Module section; 731 - Second mold mounting plate; 732 - Second assembly slot; 733 - Spraying through hole; 740 - Support section; 741 - First support frame; 742 - Drive motor; 743 - Gear; 800 - Power supply; 810 - Control unit; 900 - Transmission module; 910 - Transmission support; 920 - First roller group; 930 - Second roller group; 940 - Conveyor belt; 950 - Gap. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0036] Example 1: like Figure 1-6As shown, a sand core transfer device for a molding machine includes: a rotating support 100, the rotating support 100 having a support body 110, a geared disc 120, a swing shaft 130, and a first drive assembly (not shown in the figure); the support body 110 is roughly "L"-shaped from the left view of the sand core transfer device; the geared disc 120 is fixed below the support body 110 for transmission connection with a transmission module (not shown in the figure) on the molding machine; the rotation shaft of the geared disc 120 is arranged along the height direction of the rotating support 100, which can drive the support body 110 to rotate in the horizontal direction; the swing shaft 130 is located at the lower right side of the "L"-shaped support body 110. Two swing shafts 130 are provided, and they are arranged opposite each other along the horizontal direction (the thickness direction with the rotating bracket 100 as a reference). The first drive assembly (not shown) is fixed to the upper part of the bracket body 110 and is located on the same side as the swing shafts 130. The first drive assembly (not shown) can be a gear and rack structure, a screw structure, or a hydraulic telescopic rod structure. In this embodiment, a hydraulic telescopic rod structure consisting of a hydraulic support seat 140 and a hydraulic rod 150 is schematically illustrated. The hydraulic support seat 140 is roughly inverted "π" shaped, and the horizontal end plate 400 is bolted to the bottom (not shown in the figure). The hydraulic rod 150 is fixed on the upper part of the support body 110 and located on the same side as the swing shaft 130. It has a sleeve (not shown), a shaft (not shown), and a rod (not shown). The shaft (not shown) is located on the side wall of the sleeve (not shown) and inserted into a positioning hole (not shown) on the hydraulic support seat 140. The rod (not shown) is inserted into the sleeve (not shown). The first mold mounting plate 200 has a first plate surface (not shown) and a second plate surface (not shown) arranged opposite to each other. The first plate surface (not shown) is provided with a plurality of first plates for mounting mold assemblies (not shown). An assembly slot 210 and a first assembly hole 220 are provided. The second plate surface (not shown in the figure) is provided with a first connecting seat 230 and a second connecting seat 240. The first connecting seat 230 is located at the lower part of the second plate surface (not shown in the figure) and is sleeved on the swing shaft 130, so that the first mold mounting plate 200 can swing between the height direction and the horizontal direction with the swing shaft 130 as the axis. The second connecting seat 240 is connected to the rod body (not shown in the figure) of the hydraulic rod 150 of the first drive assembly (not shown in the figure). The end of the rod body (not shown in the figure) away from the sleeve (not shown in the figure) is movably connected to the second connecting seat 240 through a fisheye buckle (not shown in the figure).The first drive assembly (not shown in the figure) can be powered by hydraulic pressure from the hydraulic system (not shown in the figure) to move the rod (not shown in the figure) away from the sleeve (not shown in the figure) (i.e., the hydraulic telescopic rod lengthens), causing the first mold mounting plate 200 to swing horizontally. Alternatively, the first drive assembly (not shown in the figure) can be powered by hydraulic pressure released from the hydraulic system (not shown in the figure) to pull the rod (not shown in the figure) closer to the sleeve (not shown in the figure) (i.e., the hydraulic telescopic rod shortens), causing the first mold mounting plate 200 to swing vertically. A fisheye buckle (not shown in the figure) is used to control the rotation between the rod and the second connecting seat 240 when the first mold mounting plate 200 swings. The connection, the first drive assembly (not shown in the figure) consists of a hydraulic support 140 and a hydraulic rod 150. Based on the liquid pressure characteristics of the hydraulic system, a very small hydraulic pressure can drive the first mold mounting plate 200, which carries a heavy sand core, to swing smoothly to the demolding position. This reduces the structural strength requirements of the hydraulic system, further improving the service life of the mechanism and reducing manufacturing costs. The bracket body 110 also includes a movable shaft assembly 300, an end plate 400, and a second drive assembly (not shown in the figure). The movable shaft assembly 300 has a first movable shaft 310 with a larger diameter to provide support and a second movable shaft 320 with a smaller diameter for guidance. A set of first movable shafts 310... 10 is inserted horizontally (in the width direction with reference to the rotating bracket 100) into the lower part of the bracket body 110. A swing shaft 130 is located at the first end 522 of the first movable shaft 310. A set of second movable shafts 320 is inserted horizontally (in the width direction with reference to the rotating bracket 100) into the upper part of the bracket body 110. The second end 523 of the second movable shaft 320 is substantially flush with the first end 522 of the first movable shaft 310. The second end 523 of the second movable shaft 320 is provided with an elastic element composed of a spring 321 to provide cushioning when the first mold mounting plate 200 swings upward to abut against the second end 523, preventing the first... The mold mounting plate 200 directly impacts the second movable shaft 320, causing damage to the movable shaft assembly 300 and improving the service life of the overall mechanism; the rotating bracket 100 has an end plate 400 on the side away from the bracket body 110. The end plate 400 has a through hole-shaped assembly part (not shown in the figure) and a drive component mounting part 410. The four assembly parts (not shown in the figure) allow the opposite ends of the first end 522 of the first movable shaft 310 to pass through and be fixed with nuts (not shown in the figure), and the opposite ends of the second end 523 of the second movable shaft 320 to pass through and be fixed with nuts (not shown in the figure), forming a movable shaft assembly 300 frame similar to a cuboid;The drive assembly mounting part 410 is located in the middle of the four assembly parts. The second drive assembly (not shown in the figure) is disposed on the drive assembly mounting part 410 and consists of a motor (not shown in the figure) and a screw (not shown in the figure). The motor (not shown in the figure) is fixed on the end plate 400 and is used to drive the end plate 400 to move closer to or away from the bracket body 110 along the extension direction of the first movable shaft 310 and the second movable shaft 320 (the width direction with the rotating bracket 100 as a reference), so as to drive the first mold mounting plate 200 located at the first end 522 of the first movable shaft 310 closer to the bracket body 110. Alternatively, it can be located away from the support body 110; a cover plate (not shown in the figure) is fixed to the top of the support body 110 by screws (not shown in the figure). The cover plate (not shown in the figure) covers the first movable shaft 310, the second movable shaft 320, the first drive assembly (not shown in the figure), and the second drive assembly (not shown in the figure). This can prevent dust or debris flying in the workshop from falling onto the first movable shaft 310, the second movable shaft 320, the first drive assembly (not shown in the figure), and the second drive assembly (not shown in the figure), thus preventing accelerated wear of the moving mechanism and further improving the overall precision of the mechanism. The movable shaft assembly 300, end plate 400, and second drive assembly (not shown in the figure) of the support body 110, along with their service life, provide a cooperative structure that enables the sand core transfer device to translate the first mold mounting plate 200 on the horizontal plane where the gear disc 120 is located. The second drive assembly drives the first mold mounting plate 200 away from the support body 110 to press against the second mold mounting plate 731 on the molding machine, forming a molding space for core sand spraying molding. Alternatively, it drives the first mold mounting plate 200 closer to the support body 110 and the second mold mounting plate 731 on the molding machine. 31. After separation and mold splitting, the thin-shell sand core (not shown in the figure) is left on the first mold mounting plate 200. The first mold mounting plate 200 is adjusted to align with the lower transfer device (not shown in the figure) by the second drive component (not shown in the figure), and then the first drive component (not shown in the figure) is controlled to drive the first mold mounting plate 200 to tilt downwards to demold. The thin-shell sand core can fall to the lower transfer device (not shown in the figure) under the action of gravity and be transferred to the next process. The falling position of the thin-shell sand core has a certain adjustment space, which facilitates the laying and adjustment of the transfer device.The entire device is installed on the molding machine. The driving component of the molding machine (not shown in the figure) drives the gear plate 120 to rotate the first mold mounting plate 200 on the rotating support 100, which can change the orientation of the thin-shell sand core mounted on the first mold mounting plate 200, transferring the thin-shell sand core to an area outside the molding machine platform. Then, the first driving component drives the first mold mounting plate 200 to tilt downwards for demolding. The thin-shell sand core can fall to the transfer device below (not shown in the figure) under the action of gravity and flow to the next process. The whole process is mechanical. The device completes the horizontal rotation and vertical tilting demolding of the thin-shell sand core without manual handling, which not only saves labor costs and improves efficiency, but also makes the mechanical transfer process more stable and reliable, reducing the risk of damage to the sand core during manual transfer. The sand core transfer device is also equipped with a sliding hammer assembly 500, which has a hammer seat 510 and a hammer body 530. The hammer seat 510 is located on the second plate surface of the first mold mounting plate 200 (not shown in the figure), and the hammer body 530 is located on the side of the hammer seat 510 away from the second plate surface (not shown in the figure).When the first mold mounting plate 200 is perpendicular to the horizontal direction, there is a gap 950 between the hammer body 530 and the second plate surface (not shown in the figure). When the first mold mounting plate 200 is parallel to the horizontal direction, the hammer body 530 impacts and finally abuts against the second plate surface (not shown in the figure). The sliding hammer assembly 500 can be composed of an electromagnet controlled by a circuit board as the hammer body and a slide rail as the hammer base, as long as the aforementioned movement mode can be achieved. The sliding hammer assembly 500 is used to strike the first mold mounting plate when the first mold mounting plate 200 swings to the demolding state parallel to the horizontal plane. Vibration 200 causes the thin-shell sand core attracted to the first mold mounting plate 200 to fall into the lower transfer device. Simultaneously, it also shakes off the core sand adhering to the inner surface of the mold on the side of the first mold mounting plate 200, completing mold self-cleaning and preventing impact on the sand core for the next spray molding, further improving product yield. In this embodiment, a purely mechanical sliding hammer assembly 500 is shown. The hammer base 510 is roughly inverted "π" shape. The horizontal end plate 400 is fixed to the second plate surface (not shown) at the bottom by bolts (not shown in the figure). The two vertical end plates 400 have... There are relatively arranged irregularly shaped holes 520, which are roughly comma-shaped when viewed from the left side of the sand core transfer device. The through direction of the irregularly shaped holes 520 is parallel to the second plate surface (not shown in the figure) and perpendicular to the plane where the swing direction of the first mold mounting plate 200 is located. The irregularly shaped holes 520 are composed of interconnected small hole segments 521 and large hole segments 524. The distance between the small hole segment 521 and the swing shaft 130 is smaller than the distance between the large hole segment 524 and the swing shaft 130. The small hole segment 521 is closer to the swing shaft 130 than the large hole segment 524. The small hole segment 521 is elongated and can be elliptical. The hole is shaped like a racetrack or a rectangle. The large hole section 524 is round. The small hole section 521 and the hole wall of the large hole section 524 are connected to form a slope near the second plate surface. The side of the slope surface near the small hole section 521 is the first end 522. The middle area of ​​the slope surface is the intersection of the small hole section 521 and the large hole section 524, which is the second end 523. The side of the slope surface near the large hole section 524 is the third end 525. The distance between the first end 522 of the slope surface and the second plate surface is greater than the distance between the third end 525 of the slope surface and the second plate surface. The second end 523 protrudes in the direction away from the second plate surface to form a bulge 526.The hammer body 530 is T-shaped and has a hammer shaft 531, a hammer head 532, and a hammer handle 533. The upper horizontal side of the T-shape, the hammer shaft 531, has a cross-section that is elongated, which can be elliptical, racetrack-shaped, or rectangular. The major axis of the hammer shaft 531 is larger than the minor axis of the small hole section 521, the major axis of the hammer shaft 531 is smaller than the diameter of the large hole section 524, and the minor axis of the hammer shaft 531 is smaller than the minor axis of the small hole section 521. The lower vertical side of the T-shape is the hammer head 532, which is connected to the hammer shaft 531 via the hammer handle 533. It can swing along a direction perpendicular to the through-hole 520. The hammer head 532 can be spherical, cylindrical, or square-prism-shaped, and its size is larger than that of the hammer handle. 533, the irregular hole 520 of the sliding hammer assembly 500, the hammer seat 510, and the elongated hammer shaft 531 cooperate. When the first mold mounting plate 200 is perpendicular to the horizontal plane, the hammer body 530 falls into the small hole section 521 under the action of gravity, and the swing direction of the hammer body 530 is locked to restrict the swing of the hammer body 530; when the first mold mounting plate 200 swings to a specific angle parallel to the horizontal plane, the hammer body 530 generates a component force in the slope direction under the action of gravity, and the hammer shaft 531 slides from the small hole section 521 to the large hole section 524, and the swing direction of the hammer body 531 is unlocked; when the first mold mounting plate 200 continues to swing to be parallel to the horizontal plane, the hammer shaft 531 has... Located in the large hole section 524, the hammer body 530's swing direction is unlocked. Under the action of gravity, the hammer body 530 swings downwards and impacts the second plate surface of the first mold mounting plate 200, generating multiple vibrations. The angle α between the inclined surface and the second plate surface is 2 to 15 degrees. The angle α can be 2, 3, 4, 5, 6, 7, 8...15 degrees, etc. As long as the first mold mounting plate 200 can swing to be parallel to the horizontal plane, the hammer shaft 531 can slide from the small hole section 521 to the large hole section 524 to complete the unlocking of the hammer body 530's swing direction. The side wall of the protrusion 526 near the large hole section 524 is more inclined. This design shortens the time it takes for the hammer shaft to slide from the small hole section 521 to the large hole section 524, resulting in a faster unlocking process. The hammer head 532 can instantly unlock, swing, and strike the second plate surface (not shown in the figure), further increasing the impact force and the number of repeated impacts. The entire sliding hammer assembly 500 requires no additional power source; it relies solely on the gravity of the hammer body 530 to achieve the suspension and striking vibration of the hammer body 530 during the up-and-down swinging process of the first mold mounting plate 200. This not only reduces equipment manufacturing costs but also lowers the overall failure rate due to its purely mechanical structure, further extending its overall service life. Furthermore, the sliding hammer assembly 500 has a simple structure and is easy to maintain.

[0037] The motion of the slide assembly 500 can be decomposed into three states, specifically, as follows: Figure 7 , 8As shown, the first mold mounting plate 200 is in a state of height direction one. Because the lower edge of the hammer shaft 531 has a rounded corner structure, the hammer body 530 can easily slide into the small hole section 521 under the action of gravity. The spherical hammer head 532 is slightly away from the second plate surface (not shown in the figure). At this time, the spherical hammer head 532 has a component force towards the second plate surface (not shown in the figure), but it cannot swing because the elongated hammer shaft 531 is locked with the inner wall of the small hole section 521. Figure 9 As shown, the first mold mounting plate 200 begins to swing to the right around the lower swing axis 130 but does not reach a specific angle. The first end 522 is still lower than the third end 525 in the height direction of the sand core transfer device. The hammer body 530 cannot overcome gravity to slide obliquely upward. The elongated hammer shaft 531 is still locked to the inner wall of the small hole section 521 and cannot swing. Figure 10 As shown, the first mold mounting plate 200 continues to swing to the right around the lower swing axis 130 until it reaches a specific angle. At this time, the first end 522 is higher than the third end 525 in the height direction of the sand core transfer device. The spherical hammer head 532 generates a rightward component force under the action of gravity, pushing the elongated hammer shaft 531 to slide to the right, separating from the small hole section 521 and sliding into the large hole section 524. Because the major axis of the hammer shaft 531 is smaller than the diameter of the large hole section 524, the hammer shaft 531 can swing freely in the large hole section 524 to complete the unlocking. Driven by gravity, the spherical hammer head 532 swings towards the second plate surface (not shown in the figure); Figure 11 As shown, the first mold mounting plate 200 swings to a state parallel to the horizontal direction. At this time, the spherical hammer head 532 has swung downward to strike the second plate surface (not shown in the figure) and continues to bounce back, striking repeatedly until finally abutting the second plate surface (not shown in the figure). This causes the first mold mounting plate 200 to drive the mold (not shown in the figure) to vibrate multiple times, shaking off the core sand adhering to the inner surface of the mold. After demolding, the first mold mounting plate 200 swings upward according to... Figure 11 , Figure 10 , Figure 8 In sequence, the hammer head 532, under the action of gravity, drives the hammer shaft 531 to slide into the small hole section 521 again, forming a falling vibration gap 950 between it and the second plate surface (not shown in the figure). As mentioned above, the hammer head 532 can slide back and forth between the small hole section 521 and the large hole section 524 in the irregular hole 520 according to the swing angle of the first mold mounting plate 200 and its own gravity, so as to achieve the swing ability of the hammer head 532 to hit the second plate surface (not shown in the figure) of the first mold mounting plate 200 at a specific angle to form vibration, shaking off the adhering core sand. The overall structure is simple and can complete the mold self-cleaning without additional driving force, reducing the overall manufacturing cost of the mechanism and improving the yield of sand core products.

[0038] In addition, the sand core transfer device is not only compatible with molding machines, but also with core shooting machines or other core sand forming devices for metal casting, and is not limited here.

[0039] Example 2: like Figure 12As shown, a molding machine, having the aforementioned sand core transfer device, further includes: a feeding section 710, located at the top of the frame body 600, having a feeding hopper 711, the outlet direction of the feeding hopper 711 being downward along the height direction of the frame; a drainage section 720, located in the middle of the frame body 600 and below the feeding section 710; a module section 730, located in the middle of the frame body 600 and below the drainage section 720, having a second mold mounting plate 731 located on one side of the frame body 600; the second mold mounting plate 731 having a spray through hole 733 penetrating the second mold mounting plate 731 along the width direction of the frame body 600 and a second assembly groove 732; a first drainage channel communicating with the feeding hopper 711. The frame body 600 includes an outlet and a jetting through-hole 733; a sand core transfer device located on one side of the frame body 600 in the width direction, with the second mold mounting plate 731 opposite to the first mold mounting plate 200; a support portion 740 located on the same side of the bottom of the frame body 600 in the width direction as the module portion 730, comprising: a first support frame 741 and a third drive assembly (not shown in the figure), the first support frame 741 having a support shaft, and the gear disk 120 of the sand core transfer device being sleeved on the support shaft; the third drive assembly (not shown in the figure) consists of a drive motor 742 and a gear 743, the gear 743 meshing with the gear disk 120, and the drive motor 742 driving the gear disk 120 through the gear 743. The first mold mounting plate 200 is driven to rotate in a direction perpendicular to the height of the frame body 600; the control unit 810 is located on the other side of the frame body 600 and is used to control each drive component; the power supply 800 is electrically connected to the control unit 810 and is used to provide a power source; the transmission module 900 is located in the front area of ​​the frame body 600 in the thickness direction, and the transmission module 900 has: a transmission bracket 910, a first roller group 920, a second roller group 930, a conveyor belt 940 and a fourth drive component. The transmission bracket 910 is rectangular, the first roller group 920 and the second roller group 930 are located at the upper ends of the transmission bracket 910 in the length direction, and the conveyor belt 940 is wound around the first roller group 920 and the second roller group 930. Between the two roller groups 930, the upper surface of the conveyor belt 940 is flush with or lower than the lower surface of the first mold mounting plate 200. There is a gap 950 between the lower surface of the conveyor belt 940 and the upper surface of the transmission support 910. The gap 950 is used to buffer the thin-shell sand core falling onto the upper surface of the conveyor belt 940 to avoid damage to the thin-shell sand core due to impact. When the molding machine is equipped with the aforementioned sand core transfer device, the horizontal rotation and vertical tilting demolding of the thin-shell sand core can be completed by the mechanical structure throughout the entire process. There is no need for manual handling, which not only saves labor costs and improves efficiency, but also makes the mechanical transfer process more stable and reliable, reducing the risk of sand core damage during manual transfer.The transmission module 900, located on the front side of the frame body in the 600mm thickness direction, works in conjunction with the sand core transfer device to achieve full mechanical automation of the thin-shell sand core process from molding to transfer. This eliminates the need for manual handling of the sand cores, making it suitable for large sand cores and automated production line installation. It offers high adaptability and reduces production costs.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sand core transfer device for a molding machine, characterized in that, At least including: The rotating bracket has a bracket body, a geared disc, a swing shaft, and a first drive assembly. The geared disc is fixed below the bracket body for transmission connection. The geared disc's rotation shaft is set along the height direction and can drive the bracket body to rotate in the horizontal direction. The swing shaft is located at the lower part of one side of the bracket body and is set parallel to the horizontal direction. The first drive assembly is fixed to the bracket body and located on the upper part of the same side as the swing shaft. The first mold mounting plate has a first plate surface and a second plate surface that are arranged opposite to each other. The first plate surface is provided with a plurality of first assembly slots and first assembly holes. The second plate surface is provided with a first connecting seat and a second connecting seat. The first connecting seat is located at the lower part of the second plate surface and is sleeved on the swing shaft. The second connecting seat is connected to a first driving component. The first driving component can drive the first mold mounting plate to swing between the height direction and the horizontal direction.

2. The sand core transfer device as described in claim 1, characterized in that: The first driving assembly consists of a hydraulic support and a hydraulic rod. The hydraulic support is fixed to the bracket body and located on the upper part of the same side as the swing shaft. The hydraulic rod has a sleeve, a shaft, and a rod body. The shaft body is located on the side wall of the sleeve and inserted into a positioning hole on the hydraulic support. The rod body is inserted into the sleeve, and its end away from the sleeve is movably connected to the second connecting seat. The first driving assembly can be driven by hydraulic pressure provided by the hydraulic system to move the rod body away from the sleeve, thereby causing the first mold mounting plate to swing in the horizontal direction. The first driving assembly can also be driven by hydraulic pressure being withdrawn from the hydraulic system to pull the rod body closer to the sleeve, thereby causing the first mold mounting plate to swing in the vertical direction.

3. The sand core transfer device as described in claim 1, characterized in that: The support body further includes a movable shaft assembly, an end plate, and a second drive assembly. The movable shaft assembly has a first movable shaft and a second movable shaft. The first movable shaft is inserted horizontally into the lower part of the support body, and the swing shaft is located at the first end of the first movable shaft. The second movable shaft is inserted horizontally into the upper part of the support body, and the second end of the second movable shaft is flush with the first end of the first movable shaft. The end plate has an assembly part and a drive assembly mounting part. Several assembly parts are respectively connected to the opposite end of the first movable shaft and the opposite end of the second movable shaft. The drive assembly mounting part is located between the several assembly parts, and the second drive assembly is disposed on the drive assembly mounting part for driving the end plate to move closer to or away from the support body along the extension direction of the first and second movable shafts, so as to drive the first mold mounting plate closer to or away from the support body.

4. The sand core transfer device as described in claim 3, characterized in that: The second end of the second movable shaft is provided with an elastic element.

5. A sand core transfer device as described in claim 3, characterized in that: The bracket body also has a cover plate, which is located on the top of the bracket body and covers the first movable shaft, the second movable shaft, the first drive assembly, and the second drive assembly.

6. The sand core transfer device as described in claim 1, characterized in that: It also includes a sliding hammer assembly, which has a hammer base and a hammer body. The hammer base is located on the second plate surface of the first mold mounting plate, and the hammer body is located on the side of the hammer base away from the second plate surface. When the first mold mounting plate is perpendicular to the horizontal direction, there is a gap between the hammer body and the second plate surface. When the first mold mounting plate is parallel to the horizontal direction, the hammer body abuts against the second plate surface.

7. A sand core transfer device as described in claim 6, characterized in that: The hammer base has a comma-shaped irregular hole. The through-path of the irregular hole is parallel to the second plate surface and perpendicular to the plane where the swing direction of the first mold mounting plate is located. The irregular hole consists of interconnected small hole segments and large hole segments. The distance between the small hole segment and the swing axis is less than the distance between the large hole segment and the swing axis. The small hole segment is elongated, and the large hole segment is circular. The hole walls of the small hole segment and the large hole segment near the second plate surface are connected to form a slope. The distance between the slope surface near the small hole segment and the second plate surface is greater than the distance between the slope surface near the large hole segment and the second plate surface. The hammer body has a hammer shaft, a hammer head, and a hammer handle. The cross-section of the hammer shaft is elongated. The major diameter of the hammer shaft is greater than the minor diameter of the small hole segment, and the major diameter of the hammer shaft is less than the diameter of the large hole segment. The hammer head is connected to the hammer shaft through the hammer handle and can swing along a direction perpendicular to the through-path of the irregular hole.

8. The sand core transfer device as described in claim 7, characterized in that: The angle α between the slope and the second plate is 2 to 15 degrees.

9. A molding machine having a frame body, including a sand core transfer device as described in any one of claims 1-8, characterized in that, Also includes: A feeding section, located at the top of the frame body, has a feeding hopper with its outlet facing downwards along the height of the frame. A drainage section, located in the middle of the frame body and below the feeding section. A module section, located in the middle of the frame body and below the drainage section, has a second mold mounting plate on one side of the frame body. The second mold mounting plate has a spray through-hole and a second assembly groove that penetrate the second mold mounting plate along the width of the frame body. A first drainage channel connects the outlet of the feeding hopper and the spray through-hole. The sand core transfer device is located on one side of the width direction in the middle of the frame body, with the second mold mounting plate opposite to the first mold mounting plate. A support section, located on the same side of the bottom of the frame body in the width direction as the module section, has a first support frame and a third drive assembly. The first support frame has a support shaft, and the gear plate of the sand core transfer device is sleeved on the support shaft. The third drive assembly drives the gear plate to rotate the first mold mounting plate along a direction perpendicular to the height of the frame body. A control section, located on the other side of the frame body, is used to control each drive assembly. The power supply is electrically connected to the control unit and is used to provide a power source.

10. A molding machine as described in claim 9, characterized in that: The transmission module is located on the front side of the frame body in the thickness direction. The transmission module has: a transmission bracket, a first roller group, a second roller group, a conveyor belt and a fourth drive assembly. The transmission bracket is cuboid in shape. The first roller group and the second roller group are located at the upper ends of the transmission bracket in the length direction. The conveyor belt is wound between the first roller group and the second roller group. The upper surface of the conveyor belt is flush with or lower than the lower surface of the first mold mounting plate.

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