Efficient impact type core removing machine and core removing method

Abstract

The invention discloses an efficient impact type core removing machine and a core removing method.The device comprises a core removing machine frame, two core breaking assemblies arranged at the top end of the core removing machine frame and a supporting assembly arranged below the core breaking assemblies, and the core breaking assemblies are used for applying impact and vibration to a casting, so that internal core sand is broken and separated from the casting; the supporting assembly is used for bearing and stabilizing a casting in the core removing process. Through cooperative operation of multiple mechanisms, the problems that a traditional core removing mode is low in efficiency, castings are damaged and adaptability is poor are solved, and the core removing device has the advantages of being high in automation degree, thorough in cleaning, convenient and fast to operate and wide in application range.

Description

Technical Field

[0001] This invention relates to a core removal machine and a core removal method, and more particularly to a high-efficiency impact core removal machine and a core removal method, belonging to the field of casting post-processing technology. Background Technology

[0002] In casting production, after demolding, the core sand remaining in the cavities formed by the sand core must be removed to meet the requirements of subsequent processing or use. Traditional removal methods mainly rely on manual hammering with tools such as hammers and chisels, or vibration using simple vibrating tables. These methods have obvious drawbacks: manual operation is labor-intensive, inefficient, and the cleaning effect is unstable and poses safety hazards; vibrating tables can easily cause surface damage or deformation of the casting, are not effective in cleaning complex internal cavities, and are difficult to adapt to the flexible production needs of multiple varieties and small batches.

[0003] Existing automated core removal equipment often suffers from complex structures, inconvenient adjustments, or is designed only for specific castings, resulting in poor versatility. Furthermore, the rapid and accurate positioning and clamping of the casting during core removal, as well as the effective transfer and controlled release of impact energy, remain technical challenges. Therefore, there is a need for an automated core removal system that is highly integrated, flexible in operation, effectively protects the casting, and offers high cleaning efficiency. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a high-efficiency impact core remover and core removal method that can improve the core removal efficiency of casting core sand.

[0005] Technical solution: The high-efficiency impact core remover of the present invention includes a core remover frame, two core breaking components located at the top of the core remover frame, and a support component located below the core breaking components. The core breaking components are used to apply impact and vibration to the casting, causing the internal core sand to break and separate from the casting. The support component is used to support and stabilize the casting during the core removal process.

[0006] Furthermore, the core-breaking assembly includes: a base plate, a central cylinder vertically installed in the middle of the base plate, a first cylinder mechanism and a second cylinder mechanism installed on both sides of the central cylinder, guide posts vertically passing through the four corners of the base plate and fixed thereon, a pressing plate located below the base plate, and a plurality of punches installed in an array on the lower surface of the pressing plate.

[0007] A linear bearing is fitted onto the portion of the guide post located above the base plate. The linear bearing is fixedly connected to the base plate and forms a linear guide pair with the guide post.

[0008] The clamping plate is rigidly connected to the lower ends of the four guide posts through four shaft end fixing parts, and can move in the vertical direction under the constraint of the guide pair;

[0009] The first cylinder mechanism and the second cylinder mechanism include a cylinder rod extending vertically downward. The pressure plate has a circular hole at a position relative to the cylinder rod. The cylinder rod passes through the corresponding circular hole in the pressure plate. The cylinder rod is used to perform high-frequency impact and vibration actions under the drive of the cylinder, acting on the casting or transmitting energy through the tool head.

[0010] The central cylinder includes a piston rod that extends downward and is connected to the central area of ​​the pressure plate via a floating joint, for providing the main closing force and driving the pressure plate to move downward to press the casting.

[0011] The punch is used to directly contact and position specific parts of the casting during the clamping process, preventing the casting from shifting during the impact.

[0012] Furthermore, the support assembly includes: a horizontally arranged support tube fixed at both ends to the core removal machine frame, and four support fixing components evenly distributed and fixed along the length of the support tube.

[0013] Each of the aforementioned support and fixing components is vertically and upwardly mounted with two core-breaking columns. The core-breaking columns are used to press against the bottom of the casting from bottom to top and participate in breaking the core sand when the core-breaking component is pressed down.

[0014] Each of the aforementioned support and fixing components has a screw installed on its left and right sides. The screw is used to provide auxiliary support and fine-tune the horizontal position of the casting to ensure that the casting is stably supported in a precise predetermined position and aligned with the punch of the upper core component.

[0015] Furthermore, the core removal machine frame includes: a base support, a connecting frame, and an opening and closing assembly;

[0016] The connecting frame is located at the top of the core removal machine frame and includes a frame and guard plates that are vertically arranged at the left and right ends of the frame. The frame is used to install two core breaking components, and the two guard plates are connected by a horizontal connecting column.

[0017] The opening and closing assembly is located on the left and right sides of the core removal machine frame, including a cylinder, a connecting block and a rotating block mounted on the base bracket. The piston rod of the cylinder is connected to the guard plate on the same side through the connecting block, driving the guard plate and the entire core removal assembly to rotate and open around the axis of the rotating block, for the placement and removal of castings.

[0018] Furthermore, it also includes a locking mechanism installed between the lower part of the guard plate and the base bracket, which is used to lock the guard plate and the base bracket rigidly when the core breaking assembly is closed to the working position, ensuring structural stability during core removal operations.

[0019] Furthermore, it also includes a funnel installed directly below the core breaking assembly and the support assembly, the funnel having an opening that covers the entire working area, for receiving and guiding all core sand that falls out of the casting.

[0020] Furthermore, it also includes a photoelectric bracket installed on the front edge of the funnel for installing photoelectric sensors to monitor whether there are foreign objects in the working area or to detect whether the casting is placed in place.

[0021] Furthermore, it also includes a pneumatic control cabinet installed on the side of the core removal machine frame. The pneumatic control cabinet integrates a pneumatic control system for centralized control of the sequential movement, pressure, and speed of all cylinders.

[0022] Furthermore, the locking mechanism is a screw lock, and it supports manually eliminating the degree of freedom between the guard plate and the base bracket in the closed position, forming a rigid connection.

[0023] Based on the same inventive concept, the present invention also provides a method for removing cores using any of the above-described high-efficiency impact core removers, comprising the following steps:

[0024] The core-breaking assembly is opened by the opening and closing mechanism; the casting is placed on the support assembly and its positioning is adjusted; the core-breaking assembly closes and is locked by the locking mechanism;

[0025] The central cylinder drives the clamping plate to descend, clamping the casting through the punch, while the core-breaking column of the support component presses against the bottom of the casting;

[0026] The first and second cylinder mechanisms are activated, driving the cylinder rod to impact and vibrate the casting to remove the core, while the core-breaking column assists in breaking the core from bottom to top;

[0027] The core sand falls into the funnel and is collected;

[0028] After core removal is completed, the locking mechanism is released, and the opening and closing components are opened; the core-removed casting is then removed, realizing automated cyclic operation.

[0029] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: 1. The process combines "compression and fixing" with "multi-point multi-directional impact vibration," resulting in concentrated and controllable energy transfer. This effectively breaks down and peels away core sand from complex internal cavities, achieving cleaning efficiency and quality far superior to traditional methods. 2. The support column height and horizontal position of the support component are adjustable, and the compression punch can be configured according to the shape of the casting. Combined with the spacious operating space provided by the opening and closing components, it can quickly adapt to castings of different sizes and structures, exhibiting strong adaptability. 3. The compression, opening, closing, locking, and impact actions are centrally controlled through a pneumatic system, achieving one-button operation cycles, reducing manual intervention, lowering labor intensity and safety hazards, and ensuring high automation and safety. 4. The linear guide system ensures the accuracy of the compression movement; the mechanical locking mechanism after closure ensures the rigidity of the entire machine during impact, reducing energy loss and equipment vibration, improving equipment lifespan, and ensuring structural stability and reliability. 5. The funnel at the bottom enables centralized collection of fallen sand, preventing dust from flying, maintaining a clean workplace, and being environmentally friendly. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the core-breaking component structure according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the support component structure according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the core removal machine frame structure according to an embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] like Figure 1 As shown, the high-efficiency impact core remover described in this embodiment includes a core remover frame 3, two core breaking components 1 located at the top of the core remover frame 3, and a support component 2 located below the core breaking components. The core breaking components 1 are used to apply impact and vibration to the casting, causing the internal core sand to break and separate from the casting. The support component 2 is used to support and stabilize the casting during the core removal process.

[0036] Furthermore, such as Figure 2As shown, the core breaking assembly 1 includes: a base plate 4, a central cylinder 12 vertically installed in the middle of the base plate 4, a first cylinder mechanism 9 and a second cylinder mechanism 10 installed on both sides of the central cylinder 12, guide posts 5 vertically passing through the four corners of the base plate 4 and fixed thereon, a pressing plate 8 located below the base plate 4, and a plurality of punches 14 installed in an array on the lower surface of the pressing plate 8;

[0037] A linear bearing 6 is fitted on the portion of the guide post 5 above the base plate 4. The linear bearing 6 is fixedly connected to the base plate 4 and forms a linear guide pair with the guide post 5.

[0038] The clamping plate 8 is rigidly connected to the lower ends of the four guide posts 5 through four shaft end fixing parts 7, and can move in the vertical direction under the constraint of the guide pair;

[0039] The first cylinder mechanism 9 and the second cylinder mechanism 10 include a cylinder rod 11 extending vertically downward. The clamping plate 8 has a circular hole at a position relative to the cylinder rod 11. The cylinder rod 11 passes through the corresponding circular hole in the clamping plate 8. The cylinder rod 11 is used to perform high-frequency impact and vibration actions under cylinder drive, acting on the casting or transmitting energy through the tool head.

[0040] The central cylinder 12 includes a piston rod that extends downward and is connected to the central region of the pressure plate 8 via a floating joint 13 to provide the main closing force and drive the pressure plate 8 to move downward to press the casting.

[0041] The punch 14 is used to directly contact and position specific parts of the casting during the pressing process to prevent the casting from shifting during the impact.

[0042] Furthermore, such as Figure 3 As shown, the support assembly 2 includes: a horizontally arranged support tube 15 fixed at both ends to the core remover frame 3, and four support fixing assemblies 16 evenly distributed and fixed along the length of the support tube 15.

[0043] Each of the support and fixing components 16 is vertically and upwardly mounted with two core breaking columns 18. The core breaking columns 18 are used to press the bottom of the casting from bottom to top and participate in breaking the core sand when the core breaking component 1 is pressed down.

[0044] Each of the support and fixing components 16 has a screw 17 installed on its left and right sides. The screw 17 is used to provide auxiliary support and fine-tune the horizontal position of the casting to ensure that the casting is stably supported in a precise predetermined position and aligned with the punch 14 of the upper core component 1.

[0045] Furthermore, such as Figure 4As shown, the core removal machine frame 3 includes: a base support 19, a connecting frame, and an opening and closing assembly;

[0046] The connecting frame is located at the top of the core removal machine frame 3, and includes a frame 22 and guard plates 21 that are vertically arranged at the left and right ends of the frame 22. The frame 22 is used to install two core breaking components 1, and the two guard plates 21 are connected by a horizontal connecting column 28.

[0047] The opening and closing assembly is located on the left and right sides of the core removal machine frame 3, including a cylinder 20, a connecting block 24, and a rotating block 25 mounted on the base bracket 19. The piston rod of the cylinder 20 is connected to the guard plate 21 on the same side through the connecting block 24, driving the guard plate 21 and the entire core breaking assembly 1 to rotate and open around the axis of the rotating block 25 for the placement and removal of castings.

[0048] Furthermore, it also includes a locking mechanism 26 installed below the guard plate 21 and between the base bracket 19, which is used to lock the guard plate 21 and the base bracket 19 rigidly when the core breaking assembly 1 is closed to the working position, ensuring the structure is stable during the core removal operation.

[0049] Furthermore, it also includes a funnel 27 installed directly below the core breaking assembly 1 and the support assembly 2, the funnel 27 having an opening that covers the entire working area, for receiving and guiding all the core sand that falls out of the casting.

[0050] Furthermore, it also includes a photoelectric bracket 23 installed on the front edge of the funnel 27, used to install photoelectric sensors to monitor whether there are foreign objects in the working area or to detect whether the casting is placed in place.

[0051] Furthermore, it also includes a pneumatic control cabinet installed on the side of the core removal machine frame 3. The pneumatic control cabinet integrates a pneumatic control system for centralized control of the sequential action, pressure, and speed of all cylinders.

[0052] Furthermore, the locking mechanism 26 is a spiral locking mechanism, and supports manual elimination of the degree of freedom between the guard plate 21 in the closed position and the base bracket 19, forming a rigid connection.

[0053] The working process of the high-efficiency impact-type core remover in this embodiment is as follows:

[0054] 1. Preparation and feeding: The operator starts the equipment through the control panel. The cylinder 20 of the opening and closing component retracts, driving the core crushing component 1 to rotate backward and upward to open, revealing a spacious feeding area above the support component 2.

[0055] 2. Casting Positioning: The casting to be cleaned is hoisted or placed on the screws 17 and core-breaking posts 18 of the multiple support units of the support assembly 2. By observation or simple measuring tools, the screws 17 at each support point are manually adjusted to ensure horizontal alignment, and the height of the core-breaking posts 18 is adjusted to ensure the casting is in a stable, ready state.

[0056] 3. Closing and Locking: Pressing the closing button extends the cylinder 20 of the opening and closing assembly, driving the core breaking assembly 1 to rotate smoothly and close. When the pressure plate 8 moves close to the top of the casting, the locking mechanism 26 is manually locked, firmly locking the guard plate 21 to the base bracket 19.

[0057] 4. Pressing the casting: The centrally located cylinder 12 operates, driving the pressing plate 8 to move downward along the guide post 5. The punch 14 below the pressing plate 8 contacts and presses the upper surface of the casting, while the bottom of the casting is pressed from bottom to top by the core-breaking post 18 of the support assembly 2, thereby stably clamping the casting between the upper and lower parts.

[0058] 5. Impact Core Removal: The outer and inner cylinder mechanisms operate sequentially or simultaneously according to a preset program. Their piston rods reciprocate at high speed, applying a series of impacts and vibrations to the casting body or specific parts of the casting via a dedicated force transmission rod. During this process, the lower core-breaking column 18 also provides an upward clamping force, assisting in breaking the core sand blocks and achieving coordinated core removal from both above and below.

[0059] 6. Sand collection: Under the action of gravity, the broken core sand falls from the opening or gap of the casting and falls into the wide funnel 27 below. It is then guided by the funnel 27 to the sand collection car or conveyor belt for transport away.

[0060] 7. Reset and Unloading: After the impact process ends, the central cylinder 12 lifts the clamping plate 8, and the locking mechanism 26 unlocks. Then, the opening and closing assembly operates, reopening the core-breaking assembly 1. The operator can then remove the cored casting, completing one work cycle.

[0061] The entire process can be automated using a programmable logic controller (PLC) for continuous operation. The pressure regulating valves within the pneumatic control cabinet can adjust the output of each cylinder to meet the needs of castings of varying strengths. Photoelectric sensors can be used to detect whether the core-breaking assembly 1 is fully closed or whether there are foreign objects in the working area, ensuring safety.

[0062] Based on the same inventive concept, this embodiment also provides a core removal method using any of the above-described high-efficiency impact core remover, comprising the following steps:

[0063] The core-breaking assembly 1 is opened by the opening and closing mechanism; the casting is placed on the support assembly 2 and its positioning is adjusted; the core-breaking assembly 1 is closed and locked by the locking mechanism 26;

[0064] The central cylinder 12 drives the clamping plate 8 to descend, which clamps the casting through the punch 14, while the core-breaking column 18 of the support assembly 2 presses against the bottom of the casting.

[0065] The first cylinder mechanism 9 and the second cylinder mechanism 10 are activated, driving the cylinder rod 11 to impact and vibrate the casting to remove the core, while the core-breaking column 18 assists in breaking the core from bottom to top.

[0066] The core sand falls into funnel 27 and is collected;

[0067] After core removal is completed, locking mechanism 26 is released, opening and closing assembly is opened; core-removed casting is removed, realizing automated cyclic operation.

[0068] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency impact-type core remover, characterized in that, include: The core removal machine frame (3), two core breaking components (1) located at the top of the core removal machine frame (3) and a support component (2) located below the core breaking components, wherein the core breaking components (1) are used to apply impact and vibration to the casting to break the core sand inside and separate it from the casting; the support component (2) is used to support and stabilize the casting during the core removal process.

2. The high-efficiency impact-type core remover according to claim 1, characterized in that, The core breaking assembly (1) includes: a base plate (4), a central cylinder (12) vertically installed in the middle of the base plate (4), a first cylinder mechanism (9) and a second cylinder mechanism (10) installed on both sides of the central cylinder (12), guide posts (5) vertically passing through the four corners of the base plate (4) and fixed thereon, a pressing plate (8) located below the base plate (4), and a plurality of punches (14) installed in an array on the lower surface of the pressing plate (8). The guide post (5) is fitted with a linear bearing (6) on the part above the base plate (4). The linear bearing (6) is fixedly connected to the base plate (4) and forms a linear guide pair with the guide post (5). The clamping plate (8) is rigidly connected to the lower ends of the four guide posts (5) through four shaft end fixing parts (7), and can move in the vertical direction under the constraint of the guide pair; The first cylinder mechanism (9) and the second cylinder mechanism (10) include a cylinder rod (11) extending vertically downward. The pressure plate (8) has a circular hole at a position relative to the cylinder rod (11). The cylinder rod (11) passes through the corresponding circular hole in the pressure plate (8). The cylinder rod (11) is used to perform high-frequency impact and vibration actions under cylinder drive, acting on the casting or transmitting energy through the tool head. The central cylinder (12) includes a piston rod that extends downward and is connected to the central region of the clamping plate (8) via a floating joint (13) to provide the main closing force and drive the clamping plate (8) to move downward to clamp the casting. The punch (14) is used to directly contact and position specific parts of the casting during the pressing process to prevent the casting from shifting during the impact.

3. The high-efficiency impact-type core remover according to claim 2, characterized in that, The support assembly (2) includes: a horizontally arranged support tube (15) fixed at both ends to the core remover frame (3) and four support fixing assemblies (16) evenly distributed and fixed along the length of the support tube (15). Two core-breaking columns (18) are vertically installed on each of the support fixing components (16). The core-breaking columns (18) are used to press against the bottom of the casting from bottom to top and participate in breaking the core sand when the core-breaking components (1) are pressed down. Each of the support fixing components (16) has a screw (17) installed on its left and right sides respectively. The screw (17) is used to provide auxiliary support and fine-tune the horizontal position of the casting to ensure that the casting is stably supported in a precise predetermined position and aligned with the punch (14) of the upper core component (1).

4. The high-efficiency impact core remover according to claim 1, characterized in that, The core removal machine frame (3) includes: a base bracket (19), a connecting frame, and an opening and closing assembly; The connecting frame is located at the top of the core removal machine frame (3), including a frame (22) and guard plates (21) respectively vertically arranged at the left and right ends of the frame (22). The frame (22) is used to install two core breaking components (1), and the two guard plates (21) are connected by a horizontal connecting column (28). The opening and closing assembly is located on the left and right sides of the core removal machine frame (3), including a cylinder (20), a connecting block (24), and a rotating block (25) mounted on the base bracket (19). The piston rod of the cylinder (20) is connected to the guard plate (21) on the same side through the connecting block (24), driving the guard plate (21) and the entire core breaking assembly (1) to rotate and open around the axis of the rotating block (25) for the placement and removal of castings.

5. The high-efficiency impact core remover according to claim 4, characterized in that, It also includes a locking mechanism (26) installed between the guard plate (21) and the base bracket (19) for locking the guard plate (21) and the base bracket (19) rigidly when the core breaking assembly (1) is closed to the working position, so as to ensure the structure is stable during the core removal operation.

6. The high-efficiency impact-type core remover according to claim 4, characterized in that, It also includes a funnel (27) installed directly below the core breaking assembly (1) and the support assembly (2), the funnel (27) having an opening that covers the entire working area, for receiving and diverting all core sand that falls out of the casting.

7. The high-efficiency impact core remover according to claim 6, characterized in that, It also includes a photoelectric bracket (23) installed on the front edge of the funnel (27) for installing photoelectric sensors to monitor whether there are foreign objects in the working area or to detect whether the casting is placed in place.

8. The high-efficiency impact core remover according to claim 6, characterized in that, It also includes a pneumatic control cabinet installed on the side of the core removal machine frame (3), which integrates a pneumatic control system for centralized control of the sequential action, pressure and speed of all cylinders.

9. The high-efficiency impact core remover according to claim 5, characterized in that, The locking mechanism (26) is a spiral locking mechanism and supports manual elimination of the degree of freedom between the guard plate (21) in the closed position and the base bracket (19) to form a rigid connection.

10. A method for removing cores using the high-efficiency impact core remover according to any one of claims 1-9, characterized in that, Includes the following steps: The core-breaking assembly (1) is opened by the opening and closing assembly; the casting is placed on the support assembly (2) and its positioning is adjusted; the core-breaking assembly (1) is closed and locked by the locking mechanism (26); The central cylinder (12) drives the clamping plate (8) to descend, and clamps the casting through the punch (14), while the core-breaking column (18) of the support assembly (2) presses against the bottom of the casting; The first cylinder mechanism (9) and the second cylinder mechanism (10) are activated, driving the cylinder rod (11) to impact and vibrate the casting to remove the core, and the core-breaking column (18) assists in breaking the core from bottom to top; The core sand falls into the funnel (27) and is collected; After the core removal is completed, the locking mechanism (26) is released and the opening and closing assembly is opened; the core-removed casting is taken out, realizing automated cyclic operation.

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