A casting shot blasting machine
By introducing a rotating frame and vertical rod structure into the shot blasting machine, the castings can achieve revolution and rotation during the blasting process, which solves the problem of uneven blasting, improves the quality and processing efficiency of the castings, and reduces energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING HAIJIN CASTING MASCH CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-03
AI Technical Summary
When processing castings with complex surface structures, existing shot blasting machines cannot fully cover the trajectory of the steel shot, resulting in uneven polishing, which affects the quality of the castings, reduces the utilization rate of steel shot, and increases energy consumption.
By designing a rotating frame and vertical rod structure inside the cage, the castings can achieve revolution and rotation during the polishing process. Multiple sets of suspension arms can hang multiple castings, and the stability and safety are ensured by structures such as limit rods and protective curtains, thus achieving comprehensive polishing.
It improves the uniformity and thoroughness of surface polishing of castings, increases processing efficiency, reduces production costs, and ensures stable equipment operation.
Smart Images

Figure CN224445626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shot blasting machine technology, and in particular to a shot blasting machine for castings. Background Technology
[0002] Shot blasting machines are mechanical devices used to clean, strengthen, or deburr the surface of castings. They are widely used in casting, machining, and other fields. The shot blaster in the machine uses centrifugal force to propel steel shot at high speed onto the surface of the casting. The impact removes surface oxide scale, burrs, or other impurities, thereby improving the surface quality and mechanical properties of the casting. Compared with traditional manual grinding or chemical cleaning methods, shot blasting machines have significant advantages such as high efficiency, uniform processing, and good environmental performance, and also improve the fatigue strength and corrosion resistance of the casting.
[0003] However, in actual use, existing shot blasting machines often have a fixed position for the castings inside the machine, and the angle at which the shot blaster throws the steel balls is also fixed. This makes it difficult for the shot trajectory to fully cover the complex surface structure of the castings. This is especially true for castings with grooves, edges, or irregular shapes. This not only easily leads to uneven polishing, ultimately affecting the overall polishing quality of the castings, but also reduces the utilization rate of steel shot and increases energy consumption and production costs. Utility Model Content
[0004] This invention provides a shot blasting machine for castings that can perform comprehensive polishing of castings, aiming to improve the overall polishing quality of castings.
[0005] The technical solution of this utility model is as follows: a shot blasting machine for castings, comprising: a machine body, a shot blaster for throwing steel shot is provided inside the machine body; a cage is provided inside the machine body; a motor is fixedly connected to the cage; a rotating frame is rotatably connected inside the cage, and the output end of the motor is fixed to it to control its rotation; at least two vertical rods are rotatably connected to the rotating frame, and the vertical rods are equidistantly distributed along the circumference of the rotating frame; gears are fixedly connected to the upper ends of each vertical rod; an internal gear ring is fixedly connected inside the cage, and each gear meshes with the internal gear ring; and suspension arms are fixedly connected to each vertical rod for hanging castings, and at least two suspension arms are equidistantly provided on each vertical rod.
[0006] As a preferred embodiment of the present invention, the shot blasting machine further includes: a slide rail fixedly connected to the top of the machine body; a hook slidably connected to the slide rail, a cage hooked to the end of the hook, a channel on the machine body restricting the upper end of the cage, and the hook controlling the cage to move along the channel, so that the cage enters and exits the machine body.
[0007] As a preferred embodiment of the present invention, the shot blasting machine further includes: a first limiting rod rotatably connected to the suspension arm to limit the position of the casting mounted on the suspension arm; and a torsion spring fixedly connected between the first limiting rod and the suspension arm.
[0008] As a preferred embodiment of this utility model, the shot blasting machine further includes: a protective curtain fixedly connected to the lower part of the cage, the protective curtain being used to block the vertical rod's moving track and allowing the vertical rod to move freely without obstruction.
[0009] As a preferred embodiment of this utility model, the shot blasting machine further includes a viewing window fixedly connected to the machine body, which is used to inspect the polishing condition of the castings inside the machine body.
[0010] As a preferred embodiment of the present invention, the shot blasting machine further includes: a second limiting rod fixedly connected to the upper end of the cage, and the groove on the machine body cooperates with the second limiting rod to limit the rotation of the cage.
[0011] Beneficial effects: By combining the rotation and revolution of the vertical rod, the casting continuously changes position and angle during polishing, allowing steel shot to impact the casting surface more comprehensively, thus improving polishing quality and ensuring the uniformity and thoroughness of the casting surface treatment. Multiple sets of suspension arms allow for the simultaneous loading of multiple castings, enabling simultaneous processing of multiple castings in a single run and significantly improving processing efficiency. The hook-driven movement of the cage and its castings makes loading and unloading castings more convenient. The first limiting rod on the suspension arm, in conjunction with a torsion spring, effectively restricts the casting position, preventing it from falling during vertical rod rotation and ensuring stability during polishing. The second limiting rod, in conjunction with the machine body channel, restricts cage rotation, further ensuring vertical rod stability and improving polishing stability. A viewing window allows for real-time monitoring of the polishing process, facilitating quality control and process adjustments. A protective curtain prevents steel shot from entering the cage, avoiding interference with the gear and internal gear ring transmission and ensuring the normal operation of the invention. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0013] Figure 2 This is a cross-sectional view of the internal structure of this utility model.
[0014] Figure 3 This is a schematic diagram of the connection structure of the gear, internal gear ring, vertical rod, and limiting rod of this utility model.
[0015] The markings in the diagram are as follows: 1-body, 2-hook, 3-slide rail, 4-cage, 5-motor, 6-rotating frame, 7-vertical rod, 8-gear, 9-internal gear ring, 10-suspension arm, 11-first limit rod, 12-torsion spring, 13-protective curtain, 14-viewing window, 15-second limit rod. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.
[0017] Example: A shot blasting machine for castings, such as Figures 1-3 As shown, it includes: a machine body 1, with a shot blaster for throwing steel shot installed inside the machine body 1; a slide rail 3 fixedly installed on the top of the machine body 1; a hook 2 slidably installed on the slide rail 3; a cage 4 hooked to the end of the hook 2, with a channel on the machine body 1 restricting the upper end of the cage 4, and the hook 2 controlling the movement of the cage 4 along the channel, so that the cage 4 enters and exits the machine body 1; a motor 5 fixedly installed on the cage 4; a rotating frame 6 rotatably installed inside the cage 4, with the output end of the motor 5 fixed to it to control its rotation; six vertical rods 7 rotatably installed on the rotating frame 6, the vertical rods 7 being evenly distributed along the circumference of the rotating frame 6; gears 8 fixedly installed on the upper end of each vertical rod 7; an internal gear ring 9 fixedly installed inside the cage 4, with all six gears 8 meshing with the internal gear ring 9; and suspension arms 10 fixedly installed on each vertical rod 7 for hanging castings, with four suspension arms 10 evenly arranged on each vertical rod 7.
[0018] First, the castings to be processed are hung on the various suspension arms 10. The six vertical rods 7 and the four suspension arms 10 on each vertical rod 7 allow the shot blasting machine to simultaneously blast multiple castings in a single run, effectively improving the efficiency of the shot blasting machine. After the castings are loaded, the hook 2 is controlled to retract the cage 4, causing the cage 4 to move upwards. Then, the hook 2 is controlled to move the upper end of the cage 4 into the channel of the machine body 1, and the cage 4 is moved into the machine body 1. After completion, the machine door of the machine body 1 is closed. Subsequently, the machine body 1 is operated to start its internal shot blaster to launch steel shot, and the motor 5 is started to rotate the rotating frame 6, causing the six vertical rods 7 to rotate around the central axis of the rotating frame 6, thus achieving... The vertical rod 7 revolves around the central axis, causing the upper gear 8 to roll along the tooth surface of the internal gear ring 9. The vertical rod 7 will also be controlled by the transmission to achieve rotation. In this way, the casting will continuously change its position and angle under the action of the central axis and rotation of the vertical rod 7. The steel shot can then impact the surface of the casting more comprehensively, thereby effectively improving the polishing quality and ensuring the uniformity and thoroughness of the surface treatment of the casting. Finally, when the shot blasting operation is completed, the shot blaster and motor 5 inside the control body 1 are stopped, the movement of the rotating frame 6 and the vertical rod 7 stops, and the hook 2 is operated to move the cage 4 out of the machine body 1 and lower it so as to remove the processed casting and hang a new casting to be processed, and enter the next work cycle.
[0019] like Figures 1-3As shown, this shot blasting machine also includes: a first limiting rod 11 rotatably mounted on the suspension arm 10 to limit the position of the casting mounted on the suspension arm 10; and a torsion spring 12 fixedly mounted between the first limiting rod 11 and the suspension arm 10. When the casting needs to be mounted on the suspension arm 10, the first limiting rod 11 is rotated from a state perpendicular to the suspension arm 10 to a state in a straight line with the suspension arm 10, allowing the casting to pass smoothly through the first limiting rod 11 and be mounted on the suspension arm 10. During this process, the torsion spring 12 is torsionally twisted. After mounting, the first limiting rod 11 is released, and the torsion spring 12 returns to its original position, causing the first limiting rod 11 to reset. The reset first limiting rod 11 forms a vertical limit on the casting, preventing it from falling off the suspension arm during shot blasting due to vibration or centrifugal force. 10. The protective curtain 13, fixedly installed at the lower part of the cage 4, is composed of staggered nylon wool. It is used to block the moving track of the vertical rod 7 and allow the vertical rod 7 to move freely without obstruction. It prevents steel shot from splashing into the cage 4 and thus avoids the steel shot affecting the transmission cooperation between the gear 8 and the internal gear ring 9. The viewing window 14, fixedly installed on the machine body 1, is used to observe the polishing of the castings inside the machine body 1. It is convenient to monitor the polishing process of the castings in real time and to facilitate quality control and process adjustment. The second limiting rod 15, fixedly installed at the upper end of the cage 4, restricts the rotation of the cage 4 by limiting the position of the second limiting rod 15 when the upper end of the cage 4 enters the channel. This ensures that the vertical rod 7 maintains a stable position and improves the stability of the casting polishing operation.
[0020] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A casting shot-blasting machine, characterized by: include: The machine body (1) is equipped with a shot blasting device for throwing steel shot; A cage (4) is installed inside the body (1); a motor (5) is fixedly connected to the cage (4); a rotating frame (6) is rotatably connected to the cage (4), and the output end of the motor (5) is fixed to it to control its rotation; at least two vertical rods (7) are rotatably connected to the rotating frame (6), and the vertical rods (7) are equidistantly distributed along the circumference of the rotating frame (6); gears (8) are fixedly connected to the upper end of each vertical rod (7); an internal gear ring (9) is fixedly connected to the cage (4), and each gear (8) meshes with the internal gear ring (9); a suspension arm (10) for hanging castings is fixedly connected to each vertical rod (7), and at least two suspension arms (10) are equidistantly provided on each vertical rod (7).
2. A shot-blasting machine for castings as claimed in claim 1, characterised in that: The shot blasting machine also includes: a slide rail (3) fixedly connected to the top of the machine body (1); a hook (2) slidably connected to the slide rail (3), a cage (4) hooked to the end of the hook (2), a channel on the machine body (1) restricting the upper end of the cage (4), and the hook (2) controlling the cage (4) to move along the channel so that the cage (4) enters and exits the machine body (1).
3. A shot-blasting machine for castings as claimed in claim 2, characterised in that: The shot blasting machine further includes: a first limiting rod (11) rotatably connected to the suspension arm (10) to limit the position of the casting mounted on the suspension arm (10); and a torsion spring (12) fixedly connected between the first limiting rod (11) and the suspension arm (10).
4. A shot-blasting machine for castings as claimed in claim 3, characterised in that: The shot blasting machine also includes a protective curtain (13) fixedly connected to the lower part of the cage (4). The protective curtain (13) is used to block the moving track of the vertical rod (7) and allow the vertical rod (7) to move freely without obstruction.
5. A shot-blasting machine for castings as claimed in claim 4, characterised in that: The shot blasting machine also includes a viewing window (14) fixedly connected to the machine body (1), which is used to inspect the polishing of the castings inside the machine body (1).
6. A shot blasting machine for casting according to claim 5, characterized in that: The shot blasting machine also includes a second limiting rod (15) fixedly connected to the upper end of the cage (4), and the groove on the machine body (1) cooperates with the second limiting rod (15) to restrict the rotation of the cage (4).