Casting production process and device for production of grain unloading elbow of harvester with coated sand

Abstract

The present application relates to the technical field of coated sand casting, in particular to a casting production process and device for producing a grain unloading elbow of a harvester by using coated sand, comprising a support, a female die, a male die and two cores; the replacement assembly comprises two clamping claws, two core pulling-out units and two rotating placing units, the core pulling-out unit is started to pull out the core from the inside of the mold; the clamping claw clamps the pulled-out core and moves it to the rotating placing unit for placing; the clamping claw clamps and takes out the core of other sizes and diameters from the rotating placing unit and places it on the core pulling-out unit again; the core of different sizes or diameters is replaced to re-enter the male die and the female die; thus, the cores are replaced in a cycle to cast grain unloading elbows of different wall thicknesses; thus, the cores can be pulled out and quickly switched to replace cores of different sizes and diameters.

Description

Technical Field

[0001] This invention relates to the field of coated sand casting technology, and in particular to a casting production process and apparatus for producing harvester unloading elbows using coated sand. Background Technology

[0002] Currently, in the production of unloading elbows for combine harvesters, coated sand casting is commonly used. The unloading elbow is actually a type of bent pipe used for unloading grain, so its interior is hollow. During casting, a punch, a die, and a core are required. The core is placed inside the punch and die. After the punch and die are closed, a core shooter is used to inject coated sand into the mold. At this time, the internal core plays the role of support and forming a hollow structure. Through processes such as heating, curing, and cooling, a sand core is formed, and then the core is removed from the casting.

[0003] However, in the aforementioned prior art, the diameter and size of the core are usually fixed during use, and the space occupied inside the mold cannot be freely increased or decreased. This makes it impossible to control the wall thickness of the unloading elbow, resulting in only one specification of unloading elbow being produced, which leads to poor flexibility in use. Summary of the Invention

[0004] The purpose of this invention is to provide a casting production process and apparatus for producing unloading elbows for harvesters using coated sand, which solves the problem in the prior art where the diameter and size of the core are usually fixed during use, making it impossible to freely increase or decrease the space occupied inside the mold, resulting in the inability to control the wall thickness of the unloading elbow, which means that only one specification of unloading elbow can be produced, resulting in poor flexibility in use.

[0005] To achieve the above objectives, the present invention provides a casting production device for producing harvester unloading elbows using coated sand, comprising a support, a concave mold, a convex mold, and two cores. The concave mold and the convex mold are both placed below the support, with the convex mold covering the top of the concave mold. The two cores are symmetrically arranged inside the convex mold and the concave mold, and are also replaceable components.

[0006] The replacement assembly includes two clamping claws, two core extraction units, and two rotating placement units. The two clamping claws are symmetrically arranged below the bracket, the two core extraction units are symmetrically arranged above the punch, and the two rotating placement units are symmetrically arranged below the bracket, each located on one side of the corresponding core extraction unit.

[0007] The replacement component also includes two multi-directional moving units, which are sequentially arranged below the bracket.

[0008] The clamping claw includes a clamping adjustment component, a U-shaped plate, two clamping telescopic components, and a clamping plate. The clamping adjustment component is located below the bracket, and its output end is fixedly connected to the U-shaped plate. The two clamping telescopic components are symmetrically arranged on both sides of the U-shaped plate, and their output ends penetrate the U-shaped plate and are fixedly connected to the corresponding clamping plates.

[0009] The multi-directional moving unit includes two clamping lifting components and a clamping lateral movement component. The two clamping lifting components are sequentially arranged below the bracket. The output ends of the two clamping lifting components are fixedly connected to the clamping lateral movement component, and the output end of the clamping lateral movement component is fixedly connected to the clamping adjustment component.

[0010] The core extraction unit includes a core rotation extraction mechanism, a core support block, and four locking mechanisms. The core rotation extraction mechanism is located above the punch and connected to the core support block. The core support block is located at one end of the core. The four locking mechanisms are sequentially distributed around the core rotation extraction mechanism.

[0011] The core rotation and extraction mechanism includes a core rotation and extraction component, a connecting plate, and a support shaft. The core rotation and extraction component is disposed above the punch. The output end of the core rotation and extraction component is fixedly connected to one end of the connecting plate, and the other end of the connecting plate is fixedly connected to one end of the support shaft. Four locking mechanisms are disposed outside the support shaft, and the support shaft is connected to the core support block through the four locking mechanisms.

[0012] The locking mechanism includes a locking rotating component, a locking telescopic component, a hexagonal groove, a hexagonal nut, a magnet, and a fixing block. The locking rotating component is disposed outside the support shaft, and its output end is fixedly connected to the locking telescopic component. The output end of the locking telescopic component is fixedly connected to the hexagonal groove. The magnet is disposed on the inner wall of the hexagonal groove. The fixing block is fixedly connected to the outer wall of the support shaft. The core support block has a threaded hole. The hexagonal nut is disposed on the fixing block, and the threaded end of the hexagonal nut is adapted to the threaded hole. The hexagonal groove is adapted to the hexagonal end of the hexagonal nut.

[0013] The rotating placement unit includes a placement drive component, a turntable, multiple rotating support shafts, and multiple placement seats. One end of the placement drive component and one end of the multiple rotating support shafts are all located below the bracket. The output end of the placement drive component is fixedly connected to the turntable. The turntable has an annular groove. The other ends of the multiple rotating support shafts are slidably connected to the annular groove. Multiple placement seats are sequentially arranged below the turntable, and the core is placed inside each placement seat.

[0014] The replacement assembly also includes a base and two punch lifting components. The base is placed below the die, and the two punch lifting components are symmetrically arranged above the base. The output end of the punch lifting components is fixedly connected to the punch.

[0015] This invention also provides a casting production process for producing harvester unloading elbows using coated sand, employing the aforementioned casting production apparatus for producing harvester unloading elbows using coated sand, comprising the following steps:

[0016] The core is placed between the concave mold and the convex mold;

[0017] A core shooter is used to inject coated sand into the mold, which is then heated, cured, and cooled to form the desired shape.

[0018] When removing the core, the core extraction unit is activated first to pull the core out of the mold.

[0019] The gripping claws hold the removed core and move it onto the rotating placement unit for placement;

[0020] The clamping claws grip and remove the cores of other sizes and diameters from the rotating placement unit, and then place them back onto the core extraction unit;

[0021] The core, with a different size or diameter, is re-entered into the punch and the die;

[0022] By cyclically replacing the core, unloading elbows with different wall thicknesses can be cast.

[0023] This invention discloses a casting production process and apparatus for producing unloading elbows for harvesters using coated sand. The process involves placing the core between the concave mold and the convex mold; injecting coated sand into the mold using a core shooter, followed by heating, curing, and cooling to form the core; upon removal, the core extraction unit is activated to pull the core out of the mold; the clamping claws hold the extracted core and move it to the rotating placement unit for placement; the clamping claws then remove cores of other sizes and diameters from the rotating placement unit and place them back on the core extraction unit; cores of different sizes or diameters are then re-entered into the convex and concave molds; this process is repeated to continuously replace the cores, casting unloading elbows with different wall thicknesses. This structural design allows for quick core extraction and switching, enabling the replacement of cores of different sizes and diameters, improving the flexibility of unloading elbow casting production, and eliminating the need for manual operation, significantly increasing replacement efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0025] Figure 1 This is a schematic diagram of the casting production device for producing unloading elbows of harvesters using coated sand according to the present invention.

[0026] Figure 2 This is a cross-sectional view of the casting production device of the present invention, which uses coated sand to produce the unloading elbow of a harvester.

[0027] Figure 3 This is the invention Figure 2 Enlarged view of the local structure at point A.

[0028] Figure 4 This is the invention Figure 2 Enlarged view of the local structure at point B.

[0029] Figure 5 This is a schematic diagram of the rotating mounting unit of the present invention.

[0030] Figure 6 This is the invention Figure 5 Enlarged view of the local structure at point C.

[0031] Figure 7 This is a flowchart of the casting production process of the harvester unloading elbow using coated sand according to the present invention.

[0032] 1-Bracket, 2-Die, 3-Punch, 4-Core, 5-Clamping Adjustment Component, 6-U-shaped Plate, 7-Clamping Telescopic Component, 8-Clamping Plate, 9-Clamping Lifting Component, 10-Clamping Lateral Movement Component, 11-Core Support Block, 12-Core Rotation Pull-out Component, 13-Connecting Plate, 14-Support Shaft, 15-Locking Rotary Component, 16-Locking Telescopic Component, 17-Hexagonal Slot, 18-Hexagonal Nut, 19-Magnet, 20-Fixing Block, 21-Threaded Hole, 22-Device Installation Drive Component, 23-Turntable, 24-Rotating Support Shaft, 25-Installation Seat, 26-Annular Slide, 27-Base, 28-Punch Lifting Component. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0034] Please see Figures 1 to 6 This invention provides a casting production device for producing harvester unloading elbows using coated sand, comprising a support 1, a concave mold 2, a convex mold 3, two cores 4, and a replacement assembly. The replacement assembly includes two clamping claws, two core 4 extraction units, and two rotating placement units. The clamping claws include clamping adjustment components 5, a U-shaped plate 6, two clamping telescopic components 7, and a clamping plate 8. The replacement assembly also includes two multi-directional movement units, each comprising two clamping lifting components 9 and a clamping lateral movement component 10. The core 4 extraction units… The system includes a core 4 rotation and extraction mechanism, a core support block 11, and four locking mechanisms. The core 4 rotation and extraction mechanism includes a core rotation and extraction component 12, a connecting plate 13, and a support shaft 14. The locking mechanism includes a locking rotation component 15, a locking telescopic component 16, a hexagonal groove 17, a hexagonal nut 18, a magnet 19, and a fixing block 20. The rotation placement unit includes a placement drive component 22, a turntable 23, multiple rotation support shafts 24, and multiple placement seats 25. The replacement assembly also includes a base 27 and two punch lifting components 28.

[0035] The concave mold 2 and the convex mold 3 are both placed below the bracket 1, with the convex mold 3 covering the upper part of the concave mold 2. Two cores 4 are symmetrically arranged inside the convex mold 3 and the concave mold 2. Two clamping claws are symmetrically arranged below the bracket 1. Two core 4 extraction units are symmetrically arranged above the convex mold 3. Two rotating placement units are symmetrically arranged below the bracket 1 and are located on one side of the corresponding core 4 extraction unit. The core 4 is placed between the concave mold 2 and the convex mold 3; a core shooter is used to inject coated sand into the mold, which is then heated, cured, and cooled to form the core; when removing the core, the core 4 extraction unit is activated to pull the core 4 out of the mold; the clamping claws hold the extracted core 4 and move it to the rotating placement unit for placement; the clamping claws then pick up cores 4 of other sizes and diameters from the rotating placement unit and place them back on the core 4 extraction unit; cores 4 of different sizes or diameters are re-entered into the convex mold 3 and the concave mold 2; and so on, the cores 4 are cyclically replaced to cast unloading elbows with different wall thicknesses.

[0036] Secondly, the clamping adjustment component 5 is located below the bracket 1. The output end of the clamping adjustment component 5 is fixedly connected to the U-shaped plate 6. Two clamping telescopic components 7 are symmetrically arranged on both sides of the U-shaped plate 6. The output ends of both clamping telescopic components 7 penetrate the U-shaped plate 6 and are fixedly connected to the corresponding clamping plates 8. The clamping adjustment component 5 is a self-locking cylinder, and the clamping telescopic component 7 is a self-locking electric actuator. When the clamping adjustment component 5 is activated, the U-shaped plate 6 moves back and forth, thereby bringing the clamping plate 8 closer to the core 4 that has been pulled out. At this time, the clamping telescopic component 7 is activated, driving the clamping plate 8 to move and clamp the core 4 in place.

[0037] Simultaneously, two multi-directional moving units are sequentially arranged below the bracket 1; two clamping lifting components 9 are sequentially arranged below the bracket 1, and the output ends of both clamping lifting components 9 are fixedly connected to the clamping transverse moving component 10, and the output end of the clamping transverse moving component 10 is fixedly connected to the clamping adjustment component 5. The clamping lifting component 9 and the clamping transverse moving component 10 are electric slide rails. When the clamping lifting component 9 is activated, it drives the clamped core 4 to rise and adjust. At the same time, the clamping transverse moving component 10 is activated, driving the core 4 to move laterally, and finally placing it inside the mounting base 25 of the rotating mounting unit.

[0038] In addition, the core 4 rotation extraction mechanism is located above the punch 3 and connected to the core support block 11. The core support block 11 is located at one end of the core 4. The four locking mechanisms are sequentially distributed around the core 4 rotation extraction mechanism. The core rotation extraction component 12 is located above the punch 3. The output end of the core rotation extraction component 12 is fixedly connected to one end of the connecting plate 13. The other end of the connecting plate 13 is fixedly connected to one end of the support shaft 14. The four locking mechanisms are located outside the support shaft 14. The support shaft 14 is connected to the core support block 11 through the four locking mechanisms. The core rotation and extraction component 12 is a self-locking motor. When docking with the core 4: the core rotation and extraction component 12 is activated, and through the connection of the connecting plate 13, it drives the support shaft 14 to move. Then, the end of the support shaft 14 away from the connecting plate 13 is inserted into the core support block 11, and the locking mechanism locks it in place. This completes the docking of the support shaft 14 and the core support block 11, thereby driving the core 4 to be inserted into or extracted from the mold. When replacement is required, after being pulled out, it can be clamped and fixed by the clamping claws. Then, the support shaft 14 and the core support block 11 are separated, and the core 4 can be transferred to the placement seat 25 for placement.

[0039] Then, the locking rotating component 15 is disposed outside the support shaft 14, the output end of the locking rotating component 15 is fixedly connected to the locking telescopic component 16, the output end of the locking telescopic component 16 is fixedly connected to the hexagonal groove 17, the magnet 19 is disposed on the inner wall of the hexagonal groove 17, the fixing block 20 is fixedly connected to the outer wall of the support shaft 14, the core support block 11 has a threaded hole 21, the hexagonal nut 18 is disposed on the fixing block 20, the threaded end of the hexagonal nut 18 is adapted to the threaded hole 21, and the hexagonal groove 17 is adapted to the hexagonal end of the hexagonal nut 18. The locking rotating component 15 is a self-locking motor, and the locking telescopic component 16 is an electric telescopic rod. When locking, the output end of the locking telescopic component 16 first extends, driving the hexagonal groove 17 to fit with the hexagonal nut 18. At this time, the locking rotating component 15 starts, driving the hexagonal nut 18 to rotate through the connection of the locking telescopic component 16. At the same time, the locking telescopic component 16 retracts, causing the hexagonal nut 18 to gradually unscrew from the threaded hole 21. The support shaft 14 and the core support block 11 separate, and the core 4 can then be clamped and transferred. In addition, due to the action of the magnet 19, the hexagonal nut 18 is attracted into the hexagonal groove 17, waiting for the installation of the next core 4.

[0040] Furthermore, one end of the placement drive component 22 and one end of each of the multiple rotating support shafts 24 are located below the bracket 1. The output end of the placement drive component 22 is fixedly connected to the turntable 23. The turntable 23 has an annular groove 26, and the other ends of each of the multiple rotating support shafts 24 are slidably connected to the annular groove 26. Multiple placement seats 25 are sequentially arranged below the turntable 23, and each placement seat 25 contains the core 4. The placement drive component 22 is a motor. When the placement drive component 22 is activated, it drives the turntable 23 to rotate. The rotating support shafts 24 slide in the annular groove 26 to maintain the stability of the turntable 23, move the empty placement seat 25 to one side of the clamping claw, and then place the core 4. Then the turntable 23 continues to rotate, clamping the cores 4 of other sizes and moving them to the other end of the support shaft 14, where they are fixed by the hexagonal nut 18. Finally, they are reinserted into the punch 3 and the die 2.

[0041] Furthermore, the base 27 is placed below the concave mold 2, and the two convex mold lifting components 28 are symmetrically arranged above the base 27. The output end of the convex mold lifting component 28 is fixedly connected to the convex mold 3. The base 27 supports the concave mold 2, and the convex mold lifting component 28 is a self-locking cylinder. When the convex mold lifting component 28 is activated, it drives the convex mold 3 to rise and adjust, thereby facilitating the removal of the internally formed grain unloading elbow sand core.

[0042] When using the casting production device of this embodiment for producing harvester unloading elbows using coated sand, the core 4 is placed between the concave mold 2 and the convex mold 3; the coated sand is injected into the mold using a core shooter, and then heated, cured, and cooled to form the core; when removing the core, the core rotation extraction component 12 is activated first, and the support shaft 14 is moved through the connection of the connecting plate 13, and the core 4 is pulled out from the mold by the connection of the core support block 11; then the clamping adjustment component 5 is activated, driving the U-shaped... Plate 6 moves back and forth, causing clamping plate 8 to approach the core 4 that has been pulled out. At this time, clamping telescopic component 7 is activated, driving clamping plate 8 to move and clamp the core 4, moving it to the rotating placement unit for placement. Simultaneously, clamping claws pick up cores 4 of other sizes and diameters from the rotating placement unit and place them back on the core 4 pulling-out unit. Cores 4 of different sizes or diameters re-enter the punch 3 and the die 2. This process is repeated to replace the cores 4 and cast unloading elbows with different wall thicknesses.

[0043] With the above-mentioned structural design, the core 4 can be pulled out and quickly switched, allowing for the replacement of cores 4 of different sizes and diameters. This improves the flexibility of grain unloading elbow casting production, and the replacement operation does not require manual operation, significantly improving replacement efficiency.

[0044] Please see Figure 7 The present invention also provides a casting production process for producing harvester unloading elbows using coated sand, comprising the following steps:

[0045] S1: Place the core 4 between the concave mold 2 and the convex mold 3;

[0046] S2: Use a core shooter to inject coated sand into the mold, then heat, cure and cool it to form the shape;

[0047] S3: When removing the core, the core 4 extraction unit is activated to pull the core 4 out of the mold.

[0048] S4: The clamping claws clamp the pulled-out core 4 and move it to the rotating placement unit for placement;

[0049] S5: The clamping claws clamp and remove the cores 4 of other sizes and diameters from the rotating placement unit, and place them back on the core 4 removal unit;

[0050] S6: The core 4, with a different size or diameter, is re-entered into the punch 3 and the die 2;

[0051] S7: The core 4 is replaced in this cycle to cast unloading elbows with different wall thicknesses.

[0052] The process involves placing the core 4 between the concave mold 2 and the convex mold 3; injecting coated sand into the mold using a core shooter, followed by heating, curing, and cooling to form the core; upon removal, the core 4 extraction unit is activated to pull the core 4 out of the mold; the clamping claws hold the extracted core 4 and move it to the rotating placement unit for placement; the clamping claws then remove cores 4 of other sizes and diameters from the rotating placement unit and place them back on the core 4 extraction unit; cores 4 of different sizes or diameters are then reinserted into the convex mold 3 and the concave mold 2; this process is repeated to replace the core 4 and cast unloading elbows with different wall thicknesses.

[0053] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A casting production device for producing unloading elbows for harvesters using coated sand, comprising a support, a concave mold, a convex mold, and two cores, wherein the concave mold and the convex mold are both placed below the support, the convex mold covers the top of the concave mold, and the two cores are symmetrically arranged inside the convex mold and the concave mold, characterized in that, This also includes replacing components; The replacement assembly includes two clamping claws, two core extraction units, and two rotating placement units. The two clamping claws are symmetrically arranged below the bracket, the two core extraction units are symmetrically arranged above the punch, and the two rotating placement units are symmetrically arranged below the bracket, each located on one side of the corresponding core extraction unit. The replacement component also includes two multi-directional moving units, which are sequentially arranged below the bracket; The clamping claw includes a clamping adjustment component, a U-shaped plate, two clamping telescopic components, and a clamping plate. The clamping adjustment component is located below the bracket, and its output end is fixedly connected to the U-shaped plate. The two clamping telescopic components are symmetrically arranged on both sides of the U-shaped plate, and their output ends penetrate the U-shaped plate and are fixedly connected to the corresponding clamping plates. The core extraction unit includes a core rotation extraction mechanism, a core support block, and four locking mechanisms. The core rotation extraction mechanism is located above the punch and connected to the core support block. The core support block is located at one end of the core. The four locking mechanisms are sequentially distributed around the core rotation extraction mechanism. The core rotation and extraction mechanism includes a core rotation and extraction component, a connecting plate, and a support shaft. The core rotation and extraction component is disposed above the punch. The output end of the core rotation and extraction component is fixedly connected to one end of the connecting plate, and the other end of the connecting plate is fixedly connected to one end of the support shaft. Four locking mechanisms are disposed outside the support shaft, and the support shaft is connected to the core support block through the four locking mechanisms. The locking mechanism includes a locking rotating component, a locking telescopic component, a hexagonal groove, a hexagonal nut, a magnet, and a fixing block. The locking rotating component is disposed outside the support shaft, and its output end is fixedly connected to the locking telescopic component. The output end of the locking telescopic component is fixedly connected to the hexagonal groove. The magnet is disposed on the inner wall of the hexagonal groove. The fixing block is fixedly connected to the outer wall of the support shaft. The core support block has a threaded hole. The hexagonal nut is disposed on the fixing block, and the threaded end of the hexagonal nut is adapted to the threaded hole. The hexagonal groove is adapted to the hexagonal end of the hexagonal nut.

2. The casting production device for producing harvester unloading elbows using coated sand as described in claim 1, characterized in that, The multi-directional moving unit includes two clamping lifting components and a clamping lateral movement component. The two clamping lifting components are sequentially arranged below the bracket. The output ends of the two clamping lifting components are fixedly connected to the clamping lateral movement component, and the output end of the clamping lateral movement component is fixedly connected to the clamping adjustment component.

3. The casting production device for producing harvester unloading elbows using coated sand as described in claim 2, characterized in that, The rotating placement unit includes a placement drive component, a turntable, multiple rotating support shafts, and multiple placement seats. One end of the placement drive component and one end of the multiple rotating support shafts are all located below the bracket. The output end of the placement drive component is fixedly connected to the turntable. The turntable has an annular groove. The other ends of the multiple rotating support shafts are slidably connected to the annular groove. The multiple placement seats are sequentially arranged below the turntable, and the core is placed inside each placement seat.

4. The casting production device for producing harvester unloading elbows using coated sand as described in claim 3, characterized in that, The replacement assembly also includes a base and two punch lifting components. The base is placed below the die, and the two punch lifting components are symmetrically arranged above the base. The output end of the punch lifting components is fixedly connected to the punch.

5. A casting production process for producing harvester unloading elbows using coated sand, employing the casting production apparatus for producing harvester unloading elbows using coated sand as described in claim 4, characterized in that... Includes the following steps: The core is placed between the concave mold and the convex mold; A core shooter is used to inject coated sand into the mold, which is then heated, cured, and cooled to form the desired shape. When removing the core, the core extraction unit is activated first to pull the core out of the mold. The gripping claws hold the removed core and move it onto the rotating placement unit for placement; The clamping claws grip and remove the cores of other sizes and diameters from the rotating placement unit, and then place them back onto the core extraction unit; The core, with a different size or diameter, is re-entered into the punch and the die; By cyclically replacing the core, unloading elbows with different wall thicknesses can be cast.

Images