A core shooter for casting workpieces

Abstract

The present application relates to the technical field of workpiece casting, and discloses a workpiece casting core shooter, which comprises a U-shaped base, lifting mechanisms arranged on the left and right sides of the U-shaped base, two conveying mechanisms installed on the inner side of the U-shaped base and arranged in an up-down manner, a lower mold assembly placed on the conveying mechanisms, and an upper mold assembly installed on the top of the U-shaped base, wherein a jacking mechanism is arranged in the U-shaped base and located between the conveying mechanisms on the upper and lower sides. The present application has the following advantages and effects: the lifting mechanisms are arranged on the left and right sides of the U-shaped base, the conveying mechanism on the top continuously conveys to the right, then the right lifting mechanism drives the demolded lower mold assembly to move downward, the demolded lower mold assembly driven by the lifting mechanism moves upward to return to the conveying mechanism on the top after being continuously conveyed to the left by the conveying mechanism on the bottom, the lower mold assembly on the conveying mechanism can be pressed against the upper mold assembly one by one, and the continuous production of workpieces is realized, thereby improving the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of workpiece casting technology, and in particular to a workpiece casting core shooting machine. Background Technology

[0002] Casting is a manufacturing process that involves pouring molten metal or other materials into a mold, then cooling and solidifying them to obtain the desired part or workpiece. This process is commonly used to produce metal parts, such as automotive parts, mechanical parts, and pipe fittings. Casting can be done using various methods, including die casting, sand casting, and lost-wax casting. This manufacturing process can produce parts with complex shapes and has low cost and high efficiency, so it is widely used in the manufacturing industry.

[0003] A search revealed a core-shooting machine disclosed in Chinese patent CN106363142B. This core-shooting machine facilitates material loading by placing the sand hopper on the top plate. Furthermore, the core-shooting machine of this invention has a slide table on the support platform, on which at least two lower dies are arranged. By sliding the slide table, when one lower die removes the sand core, the other lower die is positioned below the upper die to perform core-shooting, thereby enabling continuous production and improving production efficiency.

[0004] However, existing technologies still have some problems:

[0005] 1. The slide of this core shooting machine can only move laterally. No matter how many lower dies are set on the slide, after all the lower dies have processed the sand core, they need to be reset and production can continue. This cannot achieve continuous production and affects production efficiency.

[0006] 2. The lifting device lifts the lower mold and removes the sand core. The surface temperature of the sand core is high, and removing it directly can easily cause burns and also wastes heat.

[0007] Based on the above problems, we propose a core shooting machine for workpiece casting. Summary of the Invention

[0008] The purpose of this invention is to provide a workpiece casting core shooting machine that features continuous production, convenient unloading, and heat recovery and utilization.

[0009] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a workpiece casting core shooting machine, comprising a U-shaped base, lifting mechanisms disposed on the left and right sides of the U-shaped base, two conveying mechanisms installed on the inner side of the U-shaped base and arranged vertically, a lower mold assembly placed on the conveying mechanisms, and an upper mold assembly installed on the top of the U-shaped base. A lifting mechanism is disposed inside the U-shaped base and between the upper and lower conveying mechanisms. The U-shaped base is also provided with two other driving mechanisms with opposite conveying directions of the conveying mechanisms. A material unloading mechanism is installed on the top conveying mechanism. A mounting cover is also installed on the top conveying mechanism. A heat absorption mechanism is provided on the outer side of the mounting cover. A receiving platform with one end attached to the mounting cover is also provided on the back of the U-shaped base.

[0010] By adopting the above technical solution, lifting mechanisms are set on both sides of the U-shaped base. The top conveyor continuously transports the workpiece to the right, and then the right-side lifting mechanism drives the demolded lower mold assembly to move down. After passing through the bottom conveyor, it continues to be transported to the left. The lower mold assembly, driven by the lifting mechanism, moves up and returns to the top conveyor, allowing the lower mold assemblies on the conveyor to press against the upper mold assemblies one by one. This achieves continuous production of the workpiece and improves production efficiency. During the entire continuous production process, the lifting mechanism moves the lower mold assembly up to press against the upper mold assembly to complete the casting of the workpiece. The cast workpiece sand core continues to be transported to the right and lifted by the lifting structure. Then, the unloading structure pushes the ejected sand core into the interior of the mounting cover. The heat absorption mechanism can absorb the heat accumulated in the sand core inside the mounting cover to preheat the sand. In the subsequent workpiece casting process, an external power source can be connected to send the preheated sand to the upper mold assembly for use as raw material. This realizes heat recovery of the processed sand core, avoids heat waste and saves resources. As the unloading mechanism continuously pushes the processed sand core into the interior of the mounting cover, the sand core that previously entered the mounting cover can be squeezed out and fall onto the receiving platform, realizing automatic unloading of the processed sand core. This avoids the preheating residue on the surface of the sand core from burning the operators and makes the operation safer.

[0011] A further configuration of the present invention is as follows: the lifting mechanism includes a U-shaped frame rod located on the side of the conveying mechanism, a longitudinal electric slide rail mounted on the U-shaped frame rod, and a lifting cross plate that moves up and down on the surface of the longitudinal electric slide rail.

[0012] By adopting the above technical solution, the longitudinal electric slide rail drives the lifting horizontal plate to move up and down on its surface, which is conducive to loading and unloading the lower mold assembly after demolding, thus facilitating the continuous production of workpieces.

[0013] A further configuration of the present invention is as follows: the conveying mechanism includes two connecting horizontal plates mounted on the U-shaped base and extending to the outside of the U-shaped base, two drive rollers movably mounted between the two connecting horizontal plates on the same side, and a conveyor belt that drives and connects the two drive rollers.

[0014] By adopting the above technical solution, the drive mechanism drives the upper and lower transmission rollers to rotate in opposite directions, thereby causing the top conveyor belt to transport the lower mold assembly to the right for processing, and the bottom conveyor belt to transport the demolded lower mold assembly to the left and back to the top conveyor belt for continued processing, which is conducive to realizing continuous production of workpieces.

[0015] A further configuration of the present invention is that the lower die assembly includes a lower die base placed on top of the conveyor belt and a push plate movably installed inside the lower die base.

[0016] By adopting the above technical solution, the push plate is movably installed inside the lower mold base, allowing the workpiece to be processed between the upper mold assembly and the push plate. After processing, the push plate is moved within the lower mold base to facilitate demolding of the workpiece.

[0017] A further configuration of the present invention is as follows: the upper mold assembly includes a column mounted on the top of the U-shaped base, a sand box connected to the column, a sandblasting pipe communicating with the bottom of the sand box, a sandblasting valve mounted on the sandblasting pipe, an installation horizontal plate mounted on the column and located below the sand box, and an upper mold base mounted on the installation horizontal plate, wherein the inner top wall of the upper mold base is provided with a sandblasting port adapted to the sandblasting pipe.

[0018] By adopting the above technical solution, the lifting mechanism pushes the lower mold base to move upward and fit with the upper mold base to form a mold cavity. The sand blasting valve is opened, and the raw sand in the sand box enters the mold cavity through the sand blasting pipe and the blasting screen. Then the lifting mechanism continues to squeeze upward, so that the sand is squeezed and shaped between the lifting plate and the upper mold base, thus completing the casting of the workpiece.

[0019] A further configuration of the present invention is as follows: the lifting mechanism includes a connecting base plate installed inside the U-shaped base and located inside the top of the conveyor belt, and a hydraulic cylinder installed on the top of the connecting base plate. There are at least two hydraulic cylinders. The conveyor belt is mesh-shaped and the size of the mesh is adapted to the output end of the hydraulic cylinder. The inner bottom wall of the lower mold base has through holes adapted to the output end of the hydraulic cylinder.

[0020] By adopting the above technical solution, when casting the workpiece, one hydraulic cylinder pushes the lower mold base upward to fit against the upper mold base to form a mold cavity for casting. After casting, the sand core continues to be conveyed to the right, while another hydraulic cylinder pushes upward. The push plate moves within the lower mold base to push the sand core on the push plate upward to a certain height, facilitating demolding of the workpiece. The design of through holes and mesh holes facilitates the movement of the lower mold base by the hydraulic cylinder.

[0021] A further configuration of the present invention is as follows: the driving mechanism includes a motor mounted on the top connecting plate, a gear mounted on the upper right transmission roller and the lower right transmission roller, the two gears meshing, and the upper left transmission roller being fixedly connected to the output shaft of the motor.

[0022] By adopting the above technical solution, when the motor starts, it drives the top left transmission roller to rotate. The top left transmission roller drives the top right transmission roller to rotate through the conveyor belt. Due to the meshing of the two gears, the bottom right transmission roller and the top right transmission roller rotate in opposite directions. This allows the top conveyor belt to transport materials to the right and the bottom conveyor belt to the left, which is beneficial for the continuous production of workpieces.

[0023] A further configuration of the present invention is as follows: the unloading mechanism includes a U-shaped frame plate mounted on the top connecting horizontal plate, a second motor mounted on the U-shaped frame plate, a lead screw connected to the output shaft of the second motor and rotatably connected to the inner side of the U-shaped frame plate, a pusher plate movably connected to the bottom wall of the U-shaped frame plate and threaded to the outside of the lead screw, a partition plate mounted on the U-shaped frame plate and located outside the lead screw, and a half gear mounted outside the lead screw, wherein the number of external teeth of the half gear is three.

[0024] By adopting the above technical solution, the hydraulic cylinder pushes upward, and the lifting plate moves within the lower mold base. After the sand core on the lifting plate is pushed upward to a certain height, the second motor starts and drives the lead screw to rotate. The pusher plate is movably connected to the U-shaped frame plate and threadedly connected to the lead screw, so that the pusher plate moves back and forth, pushing the sand core pushed to a certain height forward into the mounting cover. As the pusher plate continuously pushes the processed sand core into the interior of the mounting cover, the sand core that previously entered the mounting cover can be squeezed out and fall onto the receiving platform, realizing automatic unloading of the processed sand core. This avoids burns to operators caused by the preheating residue on the surface of the sand core, making the operation safer.

[0025] A further feature of the present invention is that a support rod for supporting the mounting cover is provided on the rear side of the connecting horizontal plate at the top, the mounting cover is a hollow cylinder with an outer circle and an inner square, and the receiving platform is inclined on the side near the mounting cover.

[0026] By adopting the above technical solution, the mounting cover is designed as a hollow cylinder with an outer circle and an inner square, which facilitates the passage of the workpiece sand core inside and allows the heat absorption mechanism on the outside to absorb heat easily. The receiving platform is inclined on the side near the mounting cover to facilitate the unloading of the workpiece sand core.

[0027] A further configuration of the present invention is as follows: the heat absorption mechanism includes a heat absorption cover sleeved outside the mounting cover, a rotating bearing installed outside the heat absorption cover, a bracket installed at the bottom of the rotating bearing, a gear II installed outside the heat absorption cover and meshing with the half gear, an inlet and outlet pipe connected to the heat absorption cover, and a valve installed on the inlet and outlet pipe, wherein the heat absorption cover is filled with sand.

[0028] By adopting the above technical solution, when the workpiece sand cores are pushed into the mounting cover one by one by the pusher plate for unloading, the residual heat on the surface of the workpiece sand cores will accumulate inside the mounting cover. The heat-absorbing cover is placed outside the mounting cover and is filled with sand. The sand can absorb the accumulated heat and preheat the sand. In the subsequent workpiece casting process, an external power source can be connected to send the preheated sand to the upper mold assembly for use as raw material, realizing the heat recovery of the processed sand cores. At the same time, when the second motor starts and drives the lead screw to rotate, the half gear can rotate with the lead screw. The half gear is equipped with three teeth that mesh with the second gear, which allows the heat-absorbing cover to rotate slowly and periodically outside the mounting cover, improving the preheating effect of the sand and better recovering and utilizing the heat on the surface of the workpiece sand cores.

[0029] The beneficial effects of this invention are:

[0030] 1. This workpiece casting core shooting machine has lifting mechanisms set on the left and right sides of the U-shaped base. The top conveyor continuously conveys to the right, and then the right lifting mechanism drives the demolded lower mold assembly to move down. After passing through the bottom conveyor, it is continuously conveyed to the left. The demolded lower mold assembly is driven by the lifting mechanism to move up and return to the top conveyor, so that the lower mold assembly on the conveyor can press against the upper mold assembly one by one, realizing continuous production of workpieces and improving production efficiency.

[0031] 2. In the continuous production process of this workpiece casting core shooting machine, the lifting mechanism causes the lower mold assembly to move upward and press against the upper mold assembly to complete the casting of the workpiece. The cast workpiece sand core continues to be conveyed to the right and lifted by the lifting structure. Then, the unloading structure pushes the ejected sand core into the interior of the mounting cover. The heat absorption mechanism can absorb the heat accumulated in the sand core inside the mounting cover to preheat the sand. In the subsequent workpiece casting process, an external power source can be connected to send the preheated sand to the upper mold assembly for use as raw material. This realizes the heat recovery of the processed sand core, avoids heat waste, and saves resources.

[0032] 3. In this casting core shooting machine, as the unloading mechanism continuously pushes the processed sand core into the interior of the mounting cover, the sand core that previously entered the mounting cover can be squeezed out and fall onto the receiving platform, realizing automatic unloading of the processed sand core. This avoids burns to operators caused by the preheating residue on the surface of the sand core, making the operation safer. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the lifting mechanism structure of the present invention;

[0036] Figure 3 This is a rear view of the structure of the present invention.

[0037] In the diagram: 1. U-shaped base; 2. U-shaped support rod; 3. Longitudinal electric slide rail; 4. Lifting horizontal plate; 5. Connecting horizontal plate; 6. Transmission roller; 7. Conveyor belt; 8. Lower mold base; 9. Push plate; 10. Column; 11. Sand box; 12. Sandblasting pipe; 13. Sandblasting valve; 14. Mounting horizontal plate; 15. Upper mold base; 16. Connecting base plate; 17. Hydraulic cylinder; 18. Motor 1; 19. Gear 1; 20. Bracket; 21. U-shaped support plate; 22. Motor 2; 23. Lead screw; 24. Push plate; 25. Partition plate; 26. Half gear; 27. Support rod; 28. Mounting cover; 29. ​​Receiving platform; 30. Rotary bearing; 31. Heat absorption cover; 32. Gear 2; 33. Inlet / outlet pipe; 34. Valve. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-3This invention provides a workpiece casting core shooting machine, including a U-shaped base 1, lifting mechanisms disposed on the left and right sides of the U-shaped base 1, two conveying mechanisms installed inside the U-shaped base 1 and arranged vertically, a lower mold assembly placed on the conveying mechanisms, and an upper mold assembly installed on the top of the U-shaped base 1. A lifting mechanism is disposed inside the U-shaped base 1 and between the upper and lower conveying mechanisms. The U-shaped base 1 is also provided with two other driving mechanisms with opposite conveying directions of the conveying mechanisms. A material unloading mechanism is installed on the top conveying mechanism. A mounting cover 28 is also installed on the top conveying mechanism. A heat absorption mechanism is provided on the outside of the mounting cover 28. A receiving platform 29 with one end attached to the mounting cover 28 is also provided on the back of the U-shaped base 1.

[0040] By setting lifting mechanisms on the left and right sides of the U-shaped base 1, the top conveyor continuously conveys to the right, and then the right lifting mechanism drives the demolded lower mold assembly to move down, and then continuously conveys it to the left through the bottom conveyor. The demolded lower mold assembly, driven by the lifting mechanism, moves up and returns to the top conveyor, so that the lower mold assembly on the conveyor can press the upper mold assembly one by one, realizing the continuous production of workpieces and improving production efficiency.

[0041] Throughout the continuous production process, the lifting mechanism causes the lower mold assembly to move upward and press against the upper mold assembly to complete the casting of the workpiece. The cast workpiece sand core continues to be conveyed to the right and lifted by the lifting structure. Then, the unloading structure pushes the ejected sand core into the interior of the mounting cover 28. The heat absorption mechanism can absorb the heat accumulated in the sand core inside the mounting cover 28 to preheat the sand. In the subsequent workpiece casting process, an external power source can be connected to send the preheated sand to the upper mold assembly for use as raw material. This realizes the heat recovery of the processed sand core, avoids heat waste, and saves resources.

[0042] As the unloading mechanism continuously pushes the processed sand core into the interior of the mounting cover 28, the sand core that previously entered the mounting cover 28 can be squeezed out and fall onto the receiving platform 29, realizing automatic unloading of the processed sand core. This avoids burns to operators caused by the preheating residue on the surface of the sand core, making the operation safer.

[0043] The lifting mechanism includes a U-shaped frame rod 2 located on the side of the conveying mechanism, a longitudinal electric slide rail 3 installed on the U-shaped frame rod 2, and a lifting horizontal plate 4 that moves up and down on the surface of the longitudinal electric slide rail 3. The longitudinal electric slide rail 3 drives the lifting horizontal plate 4 to move up and down on its surface, which cooperates to load and unload the lower mold assembly after demolding, which is conducive to realizing continuous production of workpieces.

[0044] The conveying mechanism includes two connecting horizontal plates 5 installed on the U-shaped base 1 and extending to the outside of the U-shaped base 1, two drive rollers 6 movably installed between the two connecting horizontal plates 5 on the same side, and a conveyor belt 7 that drives the two drive rollers 6. The driving mechanism drives the upper and lower drive rollers 6 to rotate in opposite directions, so that the top conveyor belt 7 conveys the lower mold assembly to the right for processing, and the bottom conveyor belt 7 conveys the demolded lower mold assembly to the left and back to the top conveyor belt 7 for continued processing, which is conducive to realizing continuous production of workpieces.

[0045] The lower mold assembly includes a lower mold base 8 placed on top of the conveyor belt 7 and a push plate 9 movably installed inside the lower mold base 8. The push plate 9 is movably installed inside the lower mold base 8, allowing the workpiece to be processed between the upper mold assembly and the push plate 9. After processing, the push plate 9 is moved within the lower mold base 8 to facilitate demolding of the workpiece.

[0046] The upper mold assembly includes a column 10 mounted on the top of the U-shaped base 1, a sand box 11 connected to the column 10, a sandblasting pipe 12 connected to the bottom of the sand box 11, a sandblasting valve 13 mounted on the sandblasting pipe 12, a mounting plate 14 mounted on the column 10 and located below the sand box 11, and an upper mold base 15 mounted on the mounting plate 14. The inner top wall of the upper mold base 15 is provided with a sandblasting nozzle adapted to the sandblasting pipe 12.

[0047] The lifting mechanism pushes the lower mold base 8 upward to fit against the upper mold base 15, forming a mold cavity. The sandblasting valve 13 is opened, and the raw sand in the sand box 11 enters the mold cavity through the sandblasting pipe 12 and the spray screen. Then the lifting mechanism continues to squeeze upward, causing the sand to be squeezed and shaped between the push plate 9 and the upper mold base 15, thus completing the casting of the workpiece.

[0048] The lifting mechanism includes a connecting base plate 16 installed inside the U-shaped base 1 and located inside the top of the conveyor belt 7, and a hydraulic cylinder 17 installed on the top of the connecting base plate 16. There are at least two hydraulic cylinders 17. The conveyor belt 7 is mesh-shaped and the size of the mesh is adapted to the output end of the hydraulic cylinder 17. The inner bottom wall of the lower mold base 8 has through holes adapted to the output end of the hydraulic cylinder 17.

[0049] During the casting process, one hydraulic cylinder 17 pushes the lower mold base 8 upward to fit against the upper mold base 15, forming a mold cavity for casting. After casting, the sand core continues to be conveyed to the right, while the other hydraulic cylinder 17 pushes upward. The push plate 9 moves within the lower mold base 8, pushing the sand core on the push plate 9 upward to a certain height, facilitating demolding of the workpiece. The design of through holes and mesh holes facilitates the movement of the lower mold base 8 by the hydraulic cylinder 17.

[0050] The drive mechanism includes a motor 18 mounted on the top connecting plate 5, and gears 19 mounted on the upper right transmission roller 6 and the lower right transmission roller 6. The two gears 19 mesh with each other, and the upper left transmission roller 6 is fixedly connected to the output shaft of the motor 18.

[0051] When the motor 18 starts, it drives the top left transmission roller 6 to rotate. The top left transmission roller 6 drives the top right transmission roller 6 to rotate through the conveyor belt 7. Due to the meshing of the two gears 19, the bottom right transmission roller 6 and the top right transmission roller 6 rotate in opposite directions. This makes the top conveyor belt 7 convey to the right and the bottom conveyor belt 7 convey to the left, which is conducive to the continuous production of workpieces.

[0052] The unloading mechanism includes a U-shaped frame plate 21 mounted on the top connecting horizontal plate 5, a second motor 22 mounted on the U-shaped frame plate 21, a lead screw 23 connected to the output shaft of the second motor 22 and rotatably connected to the inner side of the U-shaped frame plate 21, a pusher plate 24 movably connected to the inner bottom wall of the U-shaped frame plate 21 and threadedly connected to the outside of the lead screw 23, a partition plate 25 mounted on the U-shaped frame plate 21 and located outside the lead screw 23, and a half gear 26 mounted outside the lead screw 23, wherein the number of external teeth of the half gear 26 is one.

[0053] Hydraulic cylinder 17 pushes upward, and the lifting plate 9 moves within the lower mold base 8, pushing the sand core on the lifting plate 9 upward to a certain height. Then, motor 22 starts and drives the lead screw 23 to rotate. The pusher plate 24 is movably connected to the U-shaped frame plate 21 and threadedly connected to the lead screw 23, causing the pusher plate 24 to move back and forth, pushing the sand core pushed to a certain height forward into the mounting cover 28. As the pusher plate 24 continuously pushes the processed sand core into the interior of the mounting cover 28, the sand core that previously entered the mounting cover 28 can be squeezed out and fall onto the receiving platform 29, realizing automatic unloading of the processed sand core. This avoids burns to operators caused by the preheating residue on the surface of the sand core, making the operation safer.

[0054] The rear side of the connecting horizontal plate 5 at the top is provided with a support rod 27 for supporting the mounting cover 28. The mounting cover 28 is a hollow cylinder with an outer circle and an inner square. The receiving platform 29 is inclined on the side near the mounting cover 28. The bottom of the receiving platform 29 is equipped with a support leg 28.

[0055] The mounting cover 28 is a hollow cylinder with an outer circle and an inner square, which facilitates the passage of the workpiece sand core inside and allows the heat absorption mechanism on the outside to absorb heat easily. The receiving platform 29 is inclined on the side near the mounting cover 28 to facilitate the unloading of the workpiece sand core.

[0056] The heat absorption mechanism includes a heat absorption cover 31 fitted outside the mounting cover 28, a rotating bearing 30 mounted outside the heat absorption cover 31, a bracket 20 mounted at the bottom of the rotating bearing 30, a gear 32 mounted outside the heat absorption cover 31 and meshing with the half gear 26, a pipe 33 connected to the heat absorption cover 31, and a valve 34 mounted on the pipe 33. The heat absorption cover 31 is filled with sand.

[0057] When the workpiece sand cores are pushed into the mounting cover 28 one by one by the pusher plate 24 for unloading, the residual heat on the surface of the workpiece sand cores will accumulate inside the mounting cover 28. The heat-absorbing cover 31 is fitted over the outside of the mounting cover 28 and is filled with sand. The sand can absorb the accumulated heat and preheat the sand. In the subsequent workpiece casting process, an external power source can be connected to send the preheated sand to the sand box 11 through the inlet and outlet pipes 33 for use as raw material, realizing the heat recovery of the processed sand cores. At the same time, when the motor 22 starts and drives the lead screw 23 to rotate, the half gear 26 can rotate with the lead screw 23. The half gear 26 is provided with a locking tooth that meshes with the gear 2 32, which allows the heat-absorbing cover 31 to rotate slowly and periodically outside the mounting cover 28, improving the preheating effect of the sand and better recovering and utilizing the heat on the surface of the workpiece sand cores.

[0058] The length of the mounting cover 28 is slightly greater than the length of the heat absorption cover 31, so that when the bracket 20 supports the heat absorption cover 31, it is in a front-to-back offset relationship with the support rod 27 supported at the bottom of the mounting cover 28. The front side of the mounting cover 28 is connected to the top connecting plate 5, which improves the support strength of the mounting cover 28.

Claims

1. A workpiece casting core shooter comprising a U-shaped base (1), a lifting mechanism arranged on the left and right sides of the U-shaped base (1), two conveying mechanisms arranged in an up-and-down manner on the inner side of the U-shaped base (1), a lower mold assembly placed on the conveying mechanisms, and an upper mold assembly arranged on the top of the U-shaped base (1), characterized in that, A lifting mechanism is provided inside the U-shaped base (1) and between the conveying mechanisms on the upper and lower sides. The U-shaped base (1) is also provided with two other driving mechanisms with opposite conveying directions of the conveying mechanisms. A discharge mechanism is installed on the top conveying mechanism. An installation cover (28) is also installed on the top conveying mechanism. A heat absorption mechanism is provided on the outside of the installation cover (28). A receiving platform (29) with one end attached to the installation cover (28) is also provided on the back of the U-shaped base (1). The conveying mechanism includes two connecting horizontal plates (5) installed on the U-shaped base (1) and extending to the outside of the U-shaped base (1), two drive rollers (6) movably installed between the two connecting horizontal plates (5) on the same side, and a conveyor belt (7) that drives and connects the two drive rollers (6). The lifting mechanism includes a connecting base plate (16) installed inside the U-shaped base (1) and located inside the top conveyor belt (7), and a hydraulic cylinder (17) installed on the top of the connecting base plate (16). There are at least two hydraulic cylinders (17). The conveyor belt (7) is mesh-shaped and the size of the mesh is adapted to the output end of the hydraulic cylinder (17). The inner bottom wall of the lower mold base (8) is provided with a through hole adapted to the output end of the hydraulic cylinder (17). The unloading mechanism includes a U-shaped frame plate (21) mounted on the top connecting horizontal plate (5), a second motor (22) mounted on the U-shaped frame plate (21), a lead screw (23) connected to the output shaft of the second motor (22) and rotatably connected to the inside of the U-shaped frame plate (21), a pusher plate (24) movably connected to the bottom wall of the U-shaped frame plate (21) and threaded to the outside of the lead screw (23), a partition plate (25) mounted on the U-shaped frame plate (21) and located outside the lead screw (23), and a half gear (26) mounted outside the lead screw (23), wherein the number of external teeth of the half gear (26) is three; The heat absorption mechanism includes a heat absorption cover (31) sleeved on the outside of the mounting cover (28), a rotating bearing (30) installed on the outside of the heat absorption cover (31), a bracket (20) installed on the bottom of the rotating bearing (30), a gear two (32) installed on the outside of the heat absorption cover (31) and meshing with the half gear (26), an inlet and outlet pipe (33) connected to the heat absorption cover (31), and a valve (34) installed on the inlet and outlet pipe (33). The heat absorption cover (31) is filled with sand.

2. The workpiece casting core shooting machine according to claim 1, characterized in that: The lifting mechanism includes a U-shaped frame rod (2) located on the side of the conveying mechanism, a longitudinal electric slide rail (3) installed on the U-shaped frame rod (2), and a lifting cross plate (4) that moves up and down on the surface of the longitudinal electric slide rail (3).

3. A core-shooting machine for workpiece casting according to claim 2, characterized in that: The lower die assembly includes a lower die base (8) placed on top of the conveyor belt (7) and a push plate (9) movably installed inside the lower die base (8).

4. A core-shooting machine for workpiece casting according to claim 3, characterized in that: The upper mold assembly includes a column (10) mounted on the top of the U-shaped base (1), a sand box (11) connected to the column (10), a sandblasting pipe (12) connected to the bottom of the sand box (11), a sandblasting valve (13) mounted on the sandblasting pipe (12), a mounting plate (14) mounted on the column (10) and located below the sand box (11), and an upper mold base (15) mounted on the mounting plate (14). The inner top wall of the upper mold base (15) is provided with a sandblasting nozzle adapted to the sandblasting pipe (12).

5. A core-shooting machine for workpiece casting according to claim 4, characterized in that: The drive mechanism includes a motor (18) mounted on the top connecting plate (5), and gears (19) mounted on the upper right transmission roller (6) and the lower right transmission roller (6), with the two gears (19) meshing. The upper left transmission roller (6) is fixedly connected to the output shaft of the motor (18).

6. A core-shooting machine for workpiece casting according to claim 5, characterized in that: The rear side of the connecting horizontal plate (5) at the top is provided with a support rod (27) for supporting the mounting cover (28). The mounting cover (28) is a hollow cylinder with an outer circle and an inner square. The receiving platform (29) is inclined on the side near the mounting cover (28).

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