Extrusion device for casting of an alloy metal

Abstract

This utility model discloses an extrusion device for alloy metal casting. The device includes a base, a working component, and a vibration unit. Supports are fixed to both ends of the top surface of the base. The working component includes a worktable that slides in contact with the base and is guided and slidably connected to the supports at both ends. The vibration unit includes a mounting frame fixed to the supports at both ends. A power component is fixedly mounted in the middle of the mounting frame, and a vibratory hammer directly opposite the inner cavity of the sand frame is fixed to the bottom end of the power component. By placing the sand frame on the worktable, the vibration unit compacts the molding sand, preventing casting defects. The worktable can move bidirectionally, facilitating adjustment of the sand frame position and improving the uniformity of the molding sand density. The power component can be driven by a motor cam or a pneumatic cylinder, combined with a spring structure to improve energy efficiency or adjust the vibration intensity. The worktable cooperates with the supports via rollers and wheels, and the base is equipped with a ball joint to improve the convenience of position adjustment, meeting the requirements of efficient and high-quality casting.

Description

Technical Field

[0001] This utility model relates to the field of customized casting technology, and in particular to an extrusion device for alloy metal casting. Background Technology

[0002] In the field of alloy metal casting, small-batch and individual custom orders are increasing, and independent sand box production has become the norm. Against this backdrop, the density of molding sand has become increasingly critical to casting quality, and existing extrusion equipment issues are becoming more prominent. I will rewrite the background technology focusing on the needs of customized sand box production.

[0003] In alloy metal casting production, with the increasing proportion of small-batch and individual custom orders, sand boxes need to be frequently and independently manufactured to meet different product requirements. In this context, the density of the molding sand directly determines the forming quality of the casting. If the molding sand density is insufficient or unevenly distributed, casting defects such as porosity, shrinkage cavities, and cracks are easily generated after the casting cools and solidifies. This not only reduces the mechanical properties and service life of the casting but also increases rework costs due to the high cost of custom sand boxes, resulting in a serious waste of raw materials and production costs. Currently, the industry mainly relies on traditional manual vibration or simple mechanical extrusion devices for compacting the molding sand within the sand frame.

[0004] Traditional manual compaction methods rely on operators manually tamping the molding sand area by area using a vibrator. This is not only labor-intensive and inefficient, but also prone to inconsistent sand density across different areas within the sand box due to variations in operator experience and force control. Furthermore, the varying sizes and shapes of custom sand boxes, especially large or uniquely shaped ones, lead to more pronounced density discrepancies between the edges and the center, severely impacting the casting accuracy.

[0005] Furthermore, existing equipment typically uses fixed worktables. Even those with movable worktables only allow for sliding adjustments in a single direction, and the sliding friction between the worktable and the base is significant. When handling custom sand boxes, operators find it difficult to push the sand frame to adjust its position, making it hard to quickly and accurately align the sand frame with the vibratory hammer, further reducing the efficiency and quality of molding sand compaction. In summary, existing molding sand extrusion and vibration devices for alloy metal casting, when adapted to custom sand boxes, fail to meet the high-efficiency and high-quality requirements of modern casting production in terms of uniformity of compaction, ease of operation, energy utilization, and applicability. Therefore, a new extrusion device capable of solving these problems is urgently needed. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes an extrusion device for alloy metal casting, which improves the convenience of position adjustment and meets the requirements of efficient and high-quality casting.

[0007] To achieve the above objectives, this utility model provides the following solution: An extrusion apparatus for alloy metal casting, comprising: A base is used to support the sand frame used for casting; brackets are fixedly connected to both ends of the top surface of the base. A working component for adjusting the position of the sand frame includes a worktable, the bottom surface of which is in slidable contact with the base, and both ends of the worktable being slidably connected to the bracket guide. A vibratory unit is used to compact the molding sand inside the sand frame; it includes a mounting frame, the two ends of which are fixedly connected to the bracket, a power component is fixedly installed in the middle of the mounting frame, and a vibratory hammer is fixedly connected to the bottom of the power component; the vibratory hammer is positioned directly opposite the inner cavity of the sand frame.

[0008] Preferably, the power assembly includes a vibratory sleeve, the bottom surface of the inner cavity of the vibratory sleeve having a sliding hole, a sliding shaft being slidably connected within the sliding hole, the bottom end of the sliding shaft being fixedly connected to the vibratory hammer, a flange being fixedly connected to the top surface of the sliding shaft, the flange being in sliding contact with the inner wall of the vibratory sleeve, a first spring being fixedly connected between the flange and the bottom surface of the inner cavity of the vibratory sleeve, the first spring being sleeved on the outside of the sliding shaft; an impact hammer is detachably connected to the top surface of the flange, the impact hammer being driven by a driving component, and the driving component being fixedly connected to the mounting bracket.

[0009] Preferably, the driving component includes a motor and a cam, the motor is fixedly connected to the mounting bracket, the motor is fixedly connected to the cam, and the outer edge of the cam is drivenly connected to the impact hammer.

[0010] Preferably, the impact hammer includes a hammer cylinder, a connecting rod is fixedly connected to the top surface of the hammer cylinder, the connecting rod is fixedly connected to the top of the hammer cylinder, and a second spring is fixedly connected between the top surface of the inner cavity of the hammer cylinder and the flange.

[0011] Preferably, the support has a sliding groove on the opposite side, and a limiting groove is formed between the top and bottom surfaces of the sliding groove, through which the support slides in contact with the worktable.

[0012] Preferably, the worktable has several rollers that slide through and make contact with each other on opposite sides, and the adjacent rollers are arranged in parallel. Each of the two rollers has a roller sleeved and fixed at both ends, and the rollers are slidably connected to the limiting groove.

[0013] Preferably, the top surface of the base is provided with a plurality of omnidirectional balls that are equally spaced and connected by ball joints, and the omnidirectional balls slide in contact with the bottom surface of the workbench.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects: This invention achieves compaction of the molding sand by placing a sand frame for alloy casting on a workbench and using a vibrating unit to compact the filling molding sand, thus preventing molding sand collapse and casting defects. Simultaneously, the workbench can be adjusted for bidirectional movement on the base, allowing for gradual compression and compaction of the molding sand within the sand frame even when pushed by an external operator, improving the uniformity of sand density throughout the frame. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a side view of the three-dimensional structure of the present invention; Figure 2 A side-view three-dimensional structural diagram of the working component; Figure 3 This is a cross-sectional structural diagram of the power assembly; Figure 4 This is a side view of the three-dimensional structure of the base; Figure 5 This is a side view of a three-dimensional structure of one embodiment of the present invention.

[0016] The components are as follows: 1. Base; 2. Sand frame; 3. Support; 4. Workbench; 5. Mounting frame; 6. Vibrating hammer; 7. Vibrating sleeve; 8. Sliding shaft; 9. Flange; 10. First spring; 12. Motor; 13. Cam; 14. Hammer cylinder; 15. Connecting rod; 16. Second spring; 17. Slide groove; 18. Limiting groove; 19. Roller shaft; 20. Roller; 21. Universal ball; 22. Pneumatic cylinder. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that all components in the technical solution of this application require necessary additional facilities for water supply, oil supply, power supply, and gas supply for driving and / or control. Unless otherwise stated, they are assumed to be used and equipped with existing technology and no special explanation is required.

[0019] It should be noted that, in order to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1: Depend on Figure 1-5An extrusion apparatus for alloy metal casting is shown, used for extruding and vibrating existing molding sand filled in an existing sand frame 2, comprising: Base 1 is used to support the sand frame 2 used for casting; brackets 3 are fixedly connected to both ends of the top surface of base 1. The working components are used to adjust the position of the sand frame 2, including a worktable 4, the bottom surface of the worktable 4 is in sliding contact with the base 1, and both ends of the worktable 4 are respectively guided and slidably connected to the bracket 3; The vibrating unit is used to compact the molding sand in the sand frame 2; it includes a mounting frame 5, the two ends of which are fixedly connected to the bracket 3 respectively, a power component is fixedly installed in the middle of the mounting frame 5, and a vibrating hammer 6 is fixedly connected to the bottom of the power component; the vibrating hammer 6 is set directly opposite to the inner cavity of the sand frame 2.

[0021] Further optimizing the design, the power assembly includes a vibratory sleeve 7, which is fixedly connected to the mounting bracket 5. A sliding hole is formed on the bottom surface of the inner cavity of the vibratory sleeve 7, and a sliding shaft 8 is slidably connected within the sliding hole. The bottom end of the sliding shaft 8 is fixedly connected to the vibratory hammer 6, and a flange 9 is fixedly connected to the top surface of the sliding shaft 8. The flange 9 slides in contact with the inner wall of the vibratory sleeve 7, and a first spring 10 is fixedly connected between the flange 9 and the bottom surface of the inner cavity of the vibratory sleeve 7. The first spring 10 is sleeved on the outside of the sliding shaft 8, supporting the weight of the vibratory hammer 6 and driving the impact hammer through the drive assembly. The impact hammer transmits the impact force to the first spring 10 through the flange 9. The compression of the first spring 10 enables the sliding shaft 8 to push the vibratory hammer 6 to vibrate the molding sand. Through the repeated rebound of the first spring 10, the force of the impact hammer is repeatedly utilized, improving the energy utilization rate of the drive component. The impact hammer is detachably connected to the top surface of the flange 9, and the impact hammer is driven by a drive component, which is fixedly connected to the mounting bracket 5.

[0022] The design is further optimized. The driving components include a motor 12 and a cam 13. The motor 12 is fixedly connected to the mounting bracket 5, and the motor 12 is fixedly connected to the cam 13. The outer edge of the cam 13 is connected to the impact hammer via a transmission. The impact hammer includes a hammer cylinder 14, with a connecting rod 15 fixedly connected to the top surface of the hammer cylinder 14. The connecting rod 15 is fixedly connected to the top end of the hammer cylinder 14, and a second spring 16 is fixedly connected between the top surface of the inner cavity of the hammer cylinder 14 and the flange 9. The rotation of the motor 12 drives the cam 13 to rotate, which in turn drives the connecting rod 15 upward. When the rod reaches the top, the two parts disengage. Under the tension of the second spring 16, the impact hammer strikes the flange 9 and then transmits the force to the vibrating hammer 6 until it is hammered into the molding sand pile.

[0023] One embodiment of this utility model: The driving component is a pneumatically telescopic cylinder 22, which is fixedly connected to the top of the mounting bracket 5. The piston rod of the pneumatic cylinder 22 is fixedly connected to the top of the impact hammer. A pneumatic regulating valve is connected in series with the pneumatic cylinder 22, which can adjust the extension frequency and length of the piston rod of the pneumatic cylinder 22 to adjust the vibration force of the vibrating hammer 6.

[0024] In a further optimized design, a sliding groove 17 is provided on the opposite sides of the support 3. A limiting groove 18 is provided between the top and bottom surfaces of the sliding groove 17, allowing the support 3 to slide in contact with the worktable 4 via the limiting groove 18. Several rollers 19 extend through and slide in contact with the opposite sides of the worktable 4. Adjacent rollers 19 are arranged in parallel, with rollers 20 sleeved and fixed to both ends of two rollers 19. The rollers 20 are slidably connected to the limiting groove 18. The two ends of the rollers 19 slide in contact with the sliding groove 17, providing support for the worktable 4. Furthermore, the rollers 20 sleeved at both ends of any two rollers 19 slide within the limiting groove 18, guiding and limiting the movement of the rollers 20 within the sliding groove 17 of the worktable 4.

[0025] In a further optimized design, several universal balls 21 are evenly spaced and connected by ball joints on the top surface of the base 1. The universal balls 21 slide in contact with the bottom surface of the worktable 4. The ball joints 1 are connected to the top surface of the base 1 by ball joints, which can withstand the rigid impact of the worktable 4, and also facilitate the movement of the worktable 4 in the direction perpendicular to the support 3, thereby improving the convenience of adjusting the relative position of the sand frame 2 and the vibratory hammer 6 placed on the worktable 4.

[0026] Furthermore, the omnidirectional ball 21 is a standard component and is existing technology, so it will not be described in detail here.

[0027] The working process of this embodiment is as follows: First, assemble all the components of the device to enable the workbench 4 to slide along the slide groove 17 on the support 3; then, embed and connect several universal balls 21 at equal intervals on the top surface of the base 1, so that the top surface of the universal balls 21 slides in contact with the bottom surface of the workbench 4, thus completing the support and sliding cooperation between the workbench 4 and the base 1. The operator places the sand frame 2 containing uncompacted molding sand on the top surface of the workbench 4 and adjusts the relative position of the sand frame 2 and the vibratory hammer 6 according to the molding sand compaction requirements. When it is necessary to move along the slide groove 17 of the support 3, the workbench 4 is pushed, the roller 19 moves with the workbench 4 and rolls in the slide groove 17, and the roller 20 slides along the limiting groove 18 to achieve smooth movement in this direction; when it is necessary to move perpendicular to the support 3, the universal ball 21 bears the weight of the workbench 4 and rolls, reducing sliding friction resistance, and the operator can easily push the workbench 4 to adjust the position of the sand frame 2, ensuring that the vibratory hammer 6 can be aligned with the molding sand area to be compacted in the sand frame 2. The motor 12 in the power assembly is started, which drives the cam 13 to rotate. The outer edge of the cam 13 contacts the connecting rod 15 of the impact hammer and drives the connecting rod 15 to move upward. At this time, the hammer cylinder 14 of the impact hammer rises with the connecting rod 15, and the second spring 16 between the top surface of the inner cavity of the hammer cylinder 14 and the flange 9 is stretched. When the cam 13 rotates to the highest point, its outer edge disengages from the connecting rod 15, and the second spring 16 releases its elastic potential energy, pulling the hammer cylinder 14 to move downward quickly and impact the flange 9. After being impacted, the flange 9 transmits the force to the first Spring 10 compresses and pushes the sliding shaft 8 downward along the sliding hole of the vibrating sleeve 7. The vibrating hammer 6 at the bottom of the sliding shaft 8 moves downward and hammers into the molding sand in the sand frame 2, realizing the initial compaction of the molding sand. Then, the first spring 10 rebounds, pushing the flange 9 and the sliding shaft 8 to move upward and reset. The vibrating hammer 6 is separated from the molding sand. At the same time, the motor 12 continues to drive the cam 13 to rotate, repeating the above process to realize the repeated vibration of the molding sand by the vibrating hammer 6. The rebound effect of the first spring 10 can also recover some impact energy and improve the energy utilization rate of the motor 12. The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An extrusion apparatus for alloy metal casting, characterized in that, include: The base (1) is used to support the sand frame (2) for casting; the top surface of the base (1) is fixedly connected to the two ends of the bracket (3); The working component is used to adjust the position of the sand frame (2), including a workbench (4), the bottom surface of the workbench (4) is in sliding contact with the base (1), and both ends of the workbench (4) are respectively guided and slidably connected to the bracket (3); The vibrating unit is used to compact the molding sand in the sand frame (2); it includes a mounting frame (5), the two ends of which are fixedly connected to the support (3), a power component is fixedly installed in the middle of the mounting frame (5), and a vibrating hammer (6) is fixedly connected to the bottom of the power component; the vibrating hammer (6) is set directly opposite to the inner cavity of the sand frame (2).

2. The extrusion apparatus for alloy metal casting according to claim 1, characterized in that: The power assembly includes a vibrating sleeve (7), with a sliding hole on the bottom surface of the inner cavity of the vibrating sleeve (7). A sliding shaft (8) is slidably connected in the sliding hole. The bottom end of the sliding shaft (8) is fixedly connected to the vibrating hammer (6). A flange (9) is fixedly connected to the top surface of the sliding shaft (8). The flange (9) slides in contact with the inner wall of the vibrating sleeve (7). A first spring (10) is fixedly connected between the flange (9) and the bottom surface of the inner cavity of the vibrating sleeve (7). The first spring (10) is sleeved on the outside of the sliding shaft (8). An impact hammer is detachably connected to the top surface of the flange (9). A driving component is driven by the impact hammer. The driving component is fixedly connected to the mounting bracket (5).

3. The extrusion apparatus for alloy metal casting according to claim 2, characterized in that: The driving component includes a motor (12) and a cam (13). The motor (12) is fixedly connected to the mounting bracket (5), and the motor (12) is fixedly connected to the cam (13). The outer edge of the cam (13) is connected to the impact hammer in a transmission connection.

4. The extrusion apparatus for alloy metal casting according to claim 3, characterized in that: The impact hammer includes a hammer cylinder (14), a connecting rod (15) is fixedly connected to the top surface of the hammer cylinder (14), the connecting rod (15) is fixedly connected to the top end of the hammer cylinder (14), and a second spring (16) is fixedly connected between the top surface of the inner cavity of the hammer cylinder (14) and the flange (9).

5. The extrusion apparatus for alloy metal casting according to claim 1, characterized in that: The bracket (3) has a sliding groove (17) on its opposite side. A limiting groove (18) is provided between the top and bottom surfaces of the sliding groove (17). The bracket (3) slides in contact with the worktable (4) through the limiting groove (18).

6. The extrusion apparatus for alloy metal casting according to claim 5, characterized in that: The workbench (4) has several rollers (19) that pass through and slide in contact with each other on opposite sides. The rollers (19) are arranged in parallel with each other. Rollers (20) are respectively sleeved and fixed at both ends of two rollers (19). The rollers (20) are slidably connected to the limiting groove (18).

7. The extrusion apparatus for alloy metal casting according to claim 1, characterized in that: The base (1) has several universal balls (21) that are equally spaced and connected by ball joints on its top surface. The universal balls (21) slide in contact with the bottom surface of the worktable (4).

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