A tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading.

Abstract

This utility model relates to the field of shot blasting machine technology, and discloses a tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading. It includes a machine body, with a shot blaster and a drive motor installed sequentially from left to right on the top of the machine body. An annular track is located inside the machine body below the shot blaster. This utility model uses a buffer mechanism between the filter screen and the shot blasting chamber to cushion the impact of the falling shot, reducing wear on the filter screen and shot, and accelerating the separation of dirt from the shot to prevent filter screen blockage. An inclined connecting hopper is installed between the machine body and the screw conveyor, with a multi-layered stepped buffer groove on the inner side of the connecting hopper and a buffer pad on the surface of the buffer groove. This progressively reduces the kinetic energy of the falling shot, causing the shot to decelerate after multiple impacts and rebounds, effectively reducing direct impact wear on the screw conveyor.

Description

Technical Field

[0001] This utility model relates to the field of shot blasting machine technology, specifically a tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading. Background Technology

[0002] Tracked shot blasting machines are a type of mechanical equipment commonly used for surface treatment. They use a high-speed rotating impeller to propel steel shot, grit, and other materials onto the surface of parts to remove surface dirt and oxide layers, thereby improving surface quality and roughness. They are suitable for cleaning sand, removing rust, removing oxide scale, and surface strengthening of small castings, forgings, stampings, gears, springs, and other parts. They are especially suitable for cleaning parts that are not afraid of impact.

[0003] In the prior art, utility model patent with announcement number CN220218039U discloses a tracked shot blasting machine with a cleaning structure, including a machine body, an annular track inside the machine body, a filter screen installed at an angle below the annular track, a hoist on one side inside the machine body, a drive motor on the top of the machine body, the drive motor drives the shot blaster to rotate and spray steel shot, and a separator on the upper end of the machine body, the separator conveying intact steel shot into the shot blaster through a connecting pipe.

[0004] In the above technical solution, the automatic loading and unloading of the projectiles is achieved through a screw conveyor, and the separation of the projectiles from the dirt is achieved through a filter screen. However, due to the fixed setting of the filter screen, the falling projectiles will generate significant impact energy. This dynamic load will cause the accumulation of plastic deformation on the surface of the filter screen material, accelerate the increase of dislocation density and form microcracks in the stress concentration area, ultimately promoting material spalling and accelerating wear. At the same time, the projectiles themselves are subjected to high reaction forces during the impact process, and the increased internal stress leads to breakage and size reduction, further aggravating their own wear. In addition, the projectiles rolling from the filter screen to the screw conveyor gain high speed due to gravity acceleration and impact the screw blades with high-intensity impact force, causing damage to the blade edges and structural wear. Utility Model Content

[0005] The purpose of this invention is to provide a tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading, so as to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading, comprising a machine body, with a shot blaster and a drive motor installed sequentially from left to right at the top of the machine body for ejecting shot onto the surface of parts; an annular track is provided inside the machine body below the shot blaster, and a filter screen is inclinedly arranged inside the machine body below the annular track; a buffer mechanism is provided between the bottom end of the filter screen and the machine body to reduce wear on the filter screen and shot, the buffer mechanism including a support block welded to the inner wall of the machine body and a support... Support block two, the filter screen and support block one and support block two are respectively provided at the ends of the support block one and support block two that are close to each other. A damper is provided between the two sets of elastic pads one to prevent the filter screen from resonating and shaking. The elastic pad two at the top of support block two is connected to the support cylinder. The elastic pad two at the bottom of the filter screen is connected to the guide rod. A buffer spring is connected between the guide rod and the support cylinder. A screw conveyor for automatic loading and unloading is provided on the left side of the machine body. A connecting bucket is provided between the screw conveyor and the machine body. A buffer groove is opened at the bottom of the inner side of the connecting bucket. A buffer pad is provided on the inner side of the buffer groove.

[0007] Preferably, both the first elastic pad and the second elastic pad are made of polyurethane material to consume residual energy. The guide rod and the support cylinder form a sliding structure, and the guide rod and the support cylinder cooperate to prevent the filter screen from shifting and causing secondary wear.

[0008] Preferably, the connecting hopper is used to collect and deliver the projectiles falling onto the filter screen into the screw conveyor, and the buffer trough is configured as a multi-layer stepped structure, and the buffer trough and the buffer pad are used to effectively reduce the direct impact wear on the screw conveyor.

[0009] Preferably, the screw conveyor includes a feeding cylinder connected to the connecting bucket and a screw component rotatably connected to the inner side of the feeding cylinder, and the screw component is used to convey the shot upward. A discharge pipe is connected between the feeding cylinder and the shot blaster, and the discharge pipe is used to guide the shot into the shot blaster.

[0010] Preferably, a servo motor is installed at the bottom of the feeding cylinder and connected to the screw component via a coupling, and the servo motor is used to drive the screw component to rotate.

[0011] Preferably, the filter screen surface is coated with a tungsten carbide coating to reduce micro-cutting wear caused by projectile friction.

[0012] Preferably, the right side of the machine body has a feed inlet that matches the annular track, and the bottom left side of the machine body has a discharge outlet.

[0013] Beneficial effects: Compared with the prior art, this utility model can buffer the impact of the falling shot by setting a buffer mechanism between the filter screen and the shot blasting chamber, so as to reduce the wear of the filter screen and the shot. At the same time, it can accelerate the separation of dirt and shot and prevent filter screen blockage. By setting an inclined connecting hopper between the machine body and the screw feeder, and the inner side of the connecting hopper is provided with a multi-layer stepped buffer groove, and the surface of the buffer groove is provided with a buffer pad, the kinetic energy of the falling shot is reduced step by step, so that the speed of the shot decreases after multiple collisions and rebounds, effectively reducing the direct impact wear on the screw conveyor. Attached Figure Description

[0014] Figure 1 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is an exploded perspective view of the connecting bucket and the buffer pad in this utility model; Figure 4 This is a three-dimensional structural diagram of the present invention; Figure 5 This is a three-dimensional structural diagram of the filter screen and buffer mechanism in this utility model; Figure 6 This is an exploded perspective view of the buffer mechanism in this utility model.

[0015] In the diagram: 1. Machine body; 2. Circular track; 3. Drive motor; 4. Shot blaster; 5. Filter screen; 6. Screw conveyor; 601. Feeding cylinder; 602. Screw component; 603. Servo motor; 604. Discharge pipe; 7. Buffer mechanism; 701. Support block one; 702. Elastic pad one; 703. Damper; 704. Support block two; 705. Elastic pad two; 706. Support cylinder; 707. Guide rod; 708. Buffer spring; 8. Connecting bucket; 9. Buffer groove; 10. Buffer pad. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5This utility model provides a tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading. It includes a machine body 1. From left to right, a shot blaster 4 and a drive motor 3 are installed on the top of the machine body 1. The shot blaster 4 and the drive motor 3 work together to eject shot onto the surface of the parts. An annular track 2 is provided inside the machine body 1 below the shot blaster 4. The annular track 2 is used to support the movement of the parts to be cleaned. A filter screen 5 is inclinedly provided inside the machine body 1 below the annular track 2. The surface of the filter screen 5 is coated with a tungsten carbide coating, which increases the hardness by more than 3 times and reduces the micro-cutting wear caused by shot friction.

[0018] Specifically, the parts to be cleaned are poured onto the ring track 2. The operator operates the control panel to make the ring track 2, drive motor 3 and servo motor 603 work. The shot blaster 4 above the ring track 2 throws out shot. The shot bounces onto the surface of the parts to remove the dirt and oxide layer attached to the surface of the parts. The steel shot and dirt fall through the holes on the ring track 2 onto the filter screen 5 below, and the filter screen 5 separates the dirt from the shot.

[0019] exist Figure 1 , Figure 5 and Figure 6 In the middle, a buffer mechanism 7 is provided between the bottom end of the filter screen 5 and the body 1 to reduce wear on the filter screen 5 and the projectile. The buffer mechanism 7 includes a support block 1 701 and a support block 2 704 welded to the inner wall of the body 1. At the ends of the filter screen 5 that are close to each other, there are corresponding elastic pads 1 702 and 2 705. Both elastic pads 1 702 and 2 705 are made of polyurethane material to dissipate residual energy and prevent vibration from being transmitted to the body 1. The two sets of elastic pads 1... A damper 703 is provided between 702 to prevent the filter screen 5 from resonating and shaking. The elastic pad 705 at the top of the support block 704 is connected to the support cylinder 706. The elastic pad 705 at the bottom of the filter screen 5 is connected to the guide rod 707. The guide rod 707 and the support cylinder 706 form a sliding structure. The guide rod 707 and the support cylinder 706 cooperate to support and guide the filter screen 5, ensure stability, and prevent the filter screen 5 from displacing and causing secondary wear. A buffer spring 708 is connected between the guide rod 707 and the support cylinder 706.

[0020] Specifically, since the guide rod 707 and the support cylinder 706 are elastically connected by a buffer spring 708, and elastic pads 705 are provided between the guide rod 707, the support cylinder 706, the filter screen 5, and the support block 704, when the projectile falls and impacts the filter screen 5, the pressure is transmitted to the guide rod 707 through the filter screen 5. The guide rod 707 stretches the buffer spring 708 to extend it. During this stage, the spring converts the kinetic energy of the projectile into elastic potential energy, significantly reducing the instantaneous impact force, so as to reduce the wear on the filter screen 5 and the projectile. At the same time, it can accelerate the separation of dirt from the projectile and prevent the filter screen 5 from clogging. After the buffer spring 708 extends, it releases elastic potential energy to push the guide rod 707 to reset, so as to ensure the stability of continuous operation. At this time, the damper 703 intervenes to generate resistance to avoid the filter screen 5 from resonating and shaking. Reducing the projectile collision damage rate can improve the projectile recycling rate and reduce maintenance costs.

[0021] exist Figures 2-4 - In the middle, a connecting bucket 8 is provided between the screw conveyor 6 and the machine body 1. The connecting bucket 8 is used to collect and send the projectiles falling on the filter screen 5 into the screw conveyor 6. A buffer groove 9 is provided at the bottom of the inner side of the connecting bucket 8. The buffer groove 9 is set with a multi-layer stepped structure. A buffer pad 10 is provided on the inner side of the buffer groove 9. The buffer groove 9 and the buffer pad 10 work together to effectively reduce the direct impact wear on the screw conveyor 6.

[0022] Specifically, by setting an inclined connecting bucket 8 between the machine body 1 and the screw feeder, and providing a multi-layered stepped buffer groove 9 on the inner side of the connecting bucket 8, and providing a buffer pad 10 on the surface of the buffer groove 9, the kinetic energy of the falling projectile is reduced step by step, so that the speed of the projectile decreases after multiple collisions and rebounds, effectively reducing the direct impact wear on the screw conveyor 6.

[0023] exist Figure 1 , Figure 2 and Figure 4 In the middle, a screw conveyor 6 for automatic loading and unloading is provided on the left side of the machine body 1. The screw conveyor 6 includes a feeding cylinder 601 connected to the connecting bucket 8 and a screw component 602 rotatably connected to the inside of the feeding cylinder 601. The screw component 602 is used to convey the shot upward. A discharge pipe 604 is connected between the feeding cylinder 601 and the shot blaster 4. The discharge pipe 604 is used to guide the shot into the shot blaster 4. A servo motor 603 is installed at the bottom of the feeding cylinder 601 and connected to the screw component 602 through a coupling. The servo motor 603 is used to drive the screw component 602 to rotate.

[0024] Specifically, when the servo motor 603 is working, the output end of the servo motor 603 drives the spiral component 602 to rotate, so as to convey the shot upward and allow the shot to re-enter the shot blaster 4 through the discharge pipe 604.

[0025] exist Figure 1 and Figure 4 In the middle, the right side of the machine body 1 is provided with a feed port that matches the annular track 2, and the bottom of the left side of the machine body 1 is provided with a discharge port.

[0026] Specifically, the parts to be cleaned are fed onto the annular track 2 through the feed inlet, and the dirt and oxide layer are discharged through the discharge outlet.

[0027] The working principle of this utility model is as follows: During use, the parts to be cleaned are poured onto the annular track 2. The operator operates the control panel to activate the annular track 2, drive motor 3, and servo motor 603. The shot blaster 4 above the annular track 2 throws shot, which is ejected onto the surface of the parts to remove dirt and oxide layers. The shot and dirt fall through the holes in the annular track 2 onto the filter screen 5 below. When the shot impacts the filter screen 5, the pressure is transmitted through the filter screen 5 to the guide rod 707. The guide rod 707 stretches the buffer spring 708, causing it to extend. During this stage, the spring converts the kinetic energy of the shot into elastic potential energy, significantly reducing the instantaneous impact force and thus reducing wear on the filter screen 5 and the shot. After extending, the buffer spring 708 releases its elasticity. The potential energy drives the guide rod 707 to reset, ensuring the stability of continuous operation. At this time, the damper 703 intervenes to generate resistance, so as to avoid the filter screen 5 from resonating and shaking. At the same time, the shot is fed into the feed cylinder 601 through the connecting bucket 8. During this process, the kinetic energy of the shot falling is gradually reduced by the cooperation of the multi-layer stepped buffer groove 9 and the buffer pad 10, so that the shot speed decreases after multiple collisions and rebounds, effectively reducing the direct impact wear on the screw conveyor 6. Meanwhile, the output end of the servo motor 603 drives the screw component 602 to rotate, so as to convey the shot upward and let the shot re-enter the shot blaster 4 through the discharge pipe 604. The electrical equipment (including but not limited to motors, electric actuators, etc.) is safely powered by an external power source and controlled by a control box.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] 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 tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading, comprising a machine body (1), wherein a shot blaster (4) and a drive motor (3) are installed sequentially from left to right on the top of the machine body (1) for ejecting shot onto the surface of parts, and an annular track (2) is provided inside the machine body (1) below the shot blaster (4), and a filter screen (5) is inclinedly provided inside the machine body (1) below the annular track (2); characterized in that: A buffer mechanism (7) is provided between the bottom end of the filter screen (5) and the body (1) to reduce wear on the filter screen (5) and the projectile. The buffer mechanism (7) includes a support block 1 (701) and a support block 2 (704) welded to the inner wall of the body (1). The filter screen (5) and the support block 1 (701) and support block 2 (704) are respectively provided with elastic pad 1 (702) and elastic pad 2 (705) at the ends of the filter screen (5) that are close to each other. A damper (703) is provided between the two sets of elastic pad 1 (702) to prevent the filter screen (5) from resonating and shaking. (704) The elastic pad at the top (705) is connected to the support cylinder (706), the elastic pad at the bottom of the filter screen (5) (705) is connected to the guide rod (707), and a buffer spring (708) is connected between the guide rod (707) and the support cylinder (706); a screw conveyor (6) for automatic loading and unloading is provided on the left side of the machine body (1), a connecting bucket (8) is provided between the screw conveyor (6) and the machine body (1), a buffer groove (9) is opened at the bottom of the inner side of the connecting bucket (8), and a buffer pad (10) is provided on the inner side of the buffer groove (9).

2. The belt type shot blasting machine with blanking buffer structure and automatic feeding and discharging according to claim 1, characterized in that: Both the first elastic pad (702) and the second elastic pad (705) are made of polyurethane material to consume the remaining energy. The guide rod (707) and the support cylinder (706) form a sliding structure, and the guide rod (707) and the support cylinder (706) cooperate to prevent the filter screen (5) from shifting and causing secondary wear.

3. A tracked shot blasting machine with a material drop buffer structure and automatic loading and unloading as described in claim 1, characterized in that: The connecting bucket (8) is used to concentrate the projectiles falling on the filter screen (5) and send them into the screw conveyor (6). The buffer groove (9) is set as a multi-layer stepped structure, and the buffer groove (9) and the buffer pad (10) work together to effectively reduce the direct impact wear on the screw conveyor (6).

4. The crawler-type shot blasting machine with blanking buffer structure and automatic feeding and discharging according to claim 3, characterized in that: The screw conveyor (6) includes a feed cylinder (601) connected to the connecting bucket (8) and a screw component (602) rotatably connected to the inside of the feed cylinder (601). The screw component (602) is used to convey the shot upward. A discharge pipe (604) is connected between the feed cylinder (601) and the shot blaster (4). The discharge pipe (604) is used to guide the shot into the shot blaster (4).

5. The belt type shot blasting machine with blanking buffer structure and automatic feeding and discharging according to claim 4, characterized in that: The bottom end of the feeding cylinder (601) is equipped with a servo motor (603) connected to the screw component (602) via a coupling, and the servo motor (603) is used to drive the screw component (602) to rotate.

6. The belt type shot blasting machine with blanking buffer structure and automatic feeding and discharging according to claim 1, characterized in that: The filter screen (5) is coated with a tungsten carbide coating to reduce micro-cutting wear caused by projectile friction.

7. The belt type shot blasting machine with blanking buffer structure and automatic feeding and discharging according to claim 1, characterized in that: The machine body (1) has a feed inlet on the right side that matches the annular track (2), and a waste discharge port is provided at the bottom left side of the machine body (1).

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