A sandblasting apparatus

Abstract

This invention relates to the field of sandblasting equipment technology, specifically to a sandblasting device, comprising a housing, an interior chamber, a placement port communicating with the chamber on the front side of the housing, a sealing door for closing the placement port on the outer wall of the housing, a collection hopper at the bottom of the chamber, the bottom surface of the collection hopper being inclined, and a discharge port at the lowest point of the bottom surface; a vertically arranged sleeve passing through the bottom of the collection hopper, the sleeve being sealed to the bottom of the collection hopper, the top end of the sleeve extending into the collection hopper, the bottom end of the sleeve extending out below the collection hopper, a rotating rod rotatably arranged inside the sleeve, the top end of the rotating rod extending out of the sleeve and fixedly connected to a horizontally arranged placement platform, the bottom end of the sleeve extending out below the collection hopper and equipped with a drive motor, the output shaft of the drive motor being drively connected to the bottom end of the rotating rod, a robotic arm being arranged on the side of the chamber away from the placement port, the free end of the robotic arm being equipped with a sandblasting body, realizing multi-directional and multi-angle automatic sandblasting of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of sandblasting equipment technology, and specifically to a sandblasting device. Background Technology

[0002] The core function of sandblasting equipment is to use high-speed jets of abrasive materials (such as aluminum oxide, zirconium oxide, etc.) to impact the surface of workpieces, efficiently removing scale, rust, old paint layers, or stubborn stains through physical grinding. Simultaneously, it adjusts surface roughness, providing an ideal pre-treatment substrate for subsequent coating, bonding, or inspection processes. This process is widely used in shipbuilding, aerospace, bridge construction, and mold manufacturing industries, and is a key technological step in improving workpiece adhesion and durability.

[0003] It's worth noting that sandblasting equipment's capabilities extend far beyond "cleaning" and "roughening"—by changing to finer abrasive grains and adjusting the blasting pressure and angle, it can also handle fine polishing. Through gentle micro-cutting or impact effects, the equipment can reduce machining marks and lower surface roughness values, giving metal, glass, or ceramic products a uniformly bright mirror finish. Thus, it becomes a flexible surface treatment platform capable of both roughing and finishing in scenarios such as deburring, matte finishing, and high-gloss finishing.

[0004] However, despite the dual advantages of sandblasting equipment in cleaning and polishing, most models currently on the market are still primarily manual or semi-automatic, lacking full-process intelligent control and adaptive adjustment capabilities. This non-automated state directly leads to several real pain points: operators must hold the spray gun for extended periods, frequently adjust parameters, and manually change workpieces, resulting in high labor intensity, low production efficiency, and sandblasting quality that is highly dependent on personal experience, with significant fluctuations in surface uniformity and roughness values, making it difficult to meet the consistency requirements of mass production. Simultaneously, in open or semi-enclosed operating environments, dust and noise pose a continuous threat to operator health, and manual monitoring of wear part replacement often leads to equipment malfunctions due to negligence. These problems are particularly prominent in industries with stringent requirements for surface precision and production capacity, such as automotive parts and precision molds, making traditional sandblasting equipment increasingly unable to meet the integrated demands of modern intelligent manufacturing for high-speed operation, high reliability, and green safety. Summary of the Invention

[0005] The purpose of this invention is to provide a sandblasting device to solve the problems pointed out in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A sandblasting device includes a housing with a chamber inside. A placement port communicating with the chamber is located on the front side of the housing. A sealing door for closing the placement port is located on the outer wall of the housing. A hopper is located at the bottom of the chamber, with its bottom surface inclined and a discharge port at its lowest point. A vertically arranged sleeve passes through the bottom of the hopper, sealingly connecting the sleeve to the bottom of the hopper. The top end of the sleeve extends into the hopper, and the bottom end extends below the hopper. A rotating rod is rotatably mounted inside the sleeve, with its top end extending out of the sleeve and fixedly connected to a horizontally arranged placement platform. The bottom end of the sleeve extends below the hopper and is equipped with a drive motor. The output shaft of the drive motor is connected to the bottom end of the rotating rod. A robotic arm is located on the side of the chamber away from the placement port, with a sandblasting body at its free end.

[0007] A further technical solution is that the sandblasting body includes a nozzle, the input end of which is connected to a sandblasting conveying pump through a spray pipe, and the feed end of the sandblasting conveying pump is connected to a sandblasting storage tank; a filter plate is installed in the collection hopper below the placement platform, the filter plate is horizontally set inside the collection hopper, the periphery of the filter plate is fixedly connected to the inner wall of the collection hopper, and a material drop gap is left between the filter plate and the inclined bottom surface, and the top end of the sleeve seals through the filter plate; a sand suction machine is connected to the discharge port through a sand return pipe, the output end of the sand suction machine is connected to a cyclone separator, and the air outlet of the cyclone separator is connected to a dust collector.

[0008] A further technical solution is that a scraping bar is connected to the outer circumference of the top of the sleeve through an L-shaped connector. The bottom side of the scraping bar slides against the upper surface of the filter plate, and the top of the scraping bar is set as an arc-shaped guide surface.

[0009] A further technical solution is that an ion air bar is installed in the chamber near the placement port via a support. The air outlet of the ion air bar is positioned above the placement platform. An elastic curtain is also installed in the chamber. The elastic curtain is fitted between the fixed end and the free end of the robotic arm. The four edges of the elastic curtain are sealed to the four inner walls of the chamber. The elastic curtain has clearance holes for the free end of the robotic arm to pass through. The edge of the clearance holes elastically abuts against the outer wall of the robotic arm to spatially isolate the fixed end of the robotic arm from the area where the placement platform is located.

[0010] A further technical solution is that the support component includes a support tube and a support rod. The bottom end of the support rod is movably inserted into the support tube, and the top end of the support rod protrudes from the top end of the support tube and is connected to the inner wall of the cavity. Locking holes are arranged in a linear array along the central axis on the outer side of the support rod. A movable rod is rotatably connected to the outer side of the support tube via a U-shaped component. The two ends of the movable rod are respectively positioned towards the two ends of the support tube. The top end of the movable rod has an insertion protrusion adapted to the locking hole. A support ring is fixedly sleeved on the bottom end of the support tube. A limiting ring is movably sleeved on the outer side of the support tube. A support spring is sleeved on the outer side of the support tube between the limiting ring and the support ring. The two ends of the support spring are respectively connected to the limiting ring and the support ring, so that the limiting ring is placed between the bottom end of the movable rod and the support tube, and the end of the insertion protrusion away from the movable rod is placed in one of the locking holes.

[0011] A further technical solution involves a connecting block fixedly mounted on the inner wall of the cavity, with a connecting port at the bottom of the connecting block. The top of the support rod is rotatably connected to the connecting port. A cylindrical groove is formed along the central axis of the support rod at the top end. A limiting rod is slidably connected within the cylindrical groove. An installation block is located on the side of the connecting port away from the support tube. The bottom side of the installation block is concave and has a limiting tooth groove in an arc array. The two ends of the limiting tooth groove face the inner walls of the two sides of the connecting port. The top of the limiting rod extends through the cylindrical groove and is connected to a semi-cylindrical block. The arc surface of the semi-cylindrical block faces upward and has a limiting protrusion that meshes with the limiting tooth groove. Limiting holes are formed in a linear array along the central axis on the outer side of the limiting rod. The limiting holes and locking holes correspond one-to-one in axial position. A limiting spring is connected to the bottom of the limiting rod. The bottom end of the limiting spring is fixedly connected to the bottom of the cylindrical groove. The end of the insertion protrusion away from the movable rod is placed in one of the locking holes, and the end of the insertion protrusion away from the movable rod is placed in the limiting hole.

[0012] A further technical solution is that an L-shaped rotating component is rotatably connected to the support tube below the support ring via a rotating bolt. One end of the L-shaped rotating component is fixedly connected to the ion wind bar, and the other end of the L-shaped rotating component is connected to a circular component. The outer ring side of the circular component is provided with locking protrusions arranged in a ring array. The bottom end face of the movable rod is arc-shaped and has a locking groove that meshes with the locking protrusions. The bottom end of the movable rod rotates around the hinge point between the U-shaped component and the movable rod as the center, so that the locking protrusions and the locking groove selectively engage or disengage.

[0013] A further technical solution is that the top of the limiting ring is surrounded by an inclined guide surface, and the bottom of the movable rod is provided with an oblique guide surface on the side facing the support tube; the inclined guide surface at the top of the limiting ring and the oblique guide surface at the bottom of the movable rod slide in cooperation, and when the limiting ring moves upward, the inclined guide surface pushes the bottom of the movable rod to swing outward.

[0014] A further technical solution is to fix a fixed spring between the outer side of the top of the support tube and the top of the movable rod. The fixed spring is used to push the top of the movable rod away from the support tube so that the movable rod rotates around the U-shaped part and drives the bottom of the movable rod to swing toward the support tube, thereby causing the insertion protrusion to slide out of the locking hole.

[0015] A further technical solution is to provide a fixing clamp on the top side of the placement platform.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes the combination of a shell, chamber, placement port, and sealing door to form a relatively enclosed sandblasting operating space, effectively reducing dust spillage during sandblasting and improving the working environment. The bottom of the collection hopper is inclined, with a discharge port at its lowest point, allowing gravity to automatically collect and discharge debris and dust, preventing material accumulation and improving discharge efficiency and smoothness. A sleeve is vertically inserted into the bottom of the collection hopper and sealed to it, providing stable rotational support for the rotating rod and effectively preventing dust leakage from the connection between the sleeve and the collection hopper, ensuring the overall sealing of the equipment and the collection effect. The placement platform is horizontally positioned and rotated by the rotating rod, ensuring a uniform processing trajectory for the workpiece during sandblasting and improving the consistency of sandblasting quality. The drive motor is located below the collection hopper, featuring a compact structure and easy maintenance. In addition, the chamber is equipped with a robotic arm, whose free end sandblasting body can flexibly adjust the sandblasting angle and position. Combined with the rotation of the placement table, it can realize automated sandblasting of workpieces from multiple directions and angles, which significantly improves processing efficiency and automation level, and reduces the intensity of manual operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a sandblasting device according to the present invention.

[0018] Figure 2 This is a rear view schematic diagram of a sandblasting device according to the present invention.

[0019] Figure 3 This is a bottom view schematic diagram of a sandblasting device according to the present invention.

[0020] Figure 4 This is a schematic diagram of the material collection hopper and sleeve structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the support component and ion wind bar structure of the present invention.

[0022] Figure 6 This is a cross-sectional view of the support structure of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged diagram of point A in the middle.

[0024] Figure 8 For the present invention Figure 6 Enlarged diagram of point B in the middle.

[0025] Figure 9 For the present invention Figure 6 Enlarged diagram of point C in the middle.

[0026] Figure 10 For the present invention Figure 9 Enlarged diagram of point C in the middle.

[0027] Icons: 1-Shell, 2-Placement opening, 3-Sealed door, 4-Collection hopper, 5-Sleeve, 6-Rotating rod, 7-Placement platform, 8-Drive motor, 9-Sandblasting body, 10-Filter plate, 11-Sand suction machine, 12-Cyclone separator, 13-Dust collector, 14-Scraper bar, 15-Support component, 16-Ionizing air bar, 17-Elastic curtain, 18-Support pipe, 19-Support rod, 20-Locking hole, 21-U-shaped component, 22-Moving rod, 2 3-Plug-in protrusion, 24-Support ring, 25-Limiting ring, 26-Supporting spring, 27-Connecting block, 28-Connecting port, 29-Limiting rod, 30-Mounting block, 31-Limiting tooth groove, 32-Half-pillar block, 33-Limiting protrusion, 34-Limiting hole, 35-Limiting spring, 36-L-shaped rotating part, 37-Circular part, 38-Locking protrusion, 39-Locking tooth groove, 40-Inclined guide surface, 41-Inclined guide surface, 42-Fixing spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] All electrical components involved in this application are prior art. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies can be connected by wires. According to the actual situation, a suitable controller can be selected to meet the control requirements. For specific connections and control sequences, please refer to the description below. The electrical connection between each electrical component is completed in the order of operation. The detailed connection methods are well known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0030] See Figures 1 to 10 The illustration is provided as an embodiment of the present invention.

[0031] Example 1 This embodiment provides a sandblasting device, including a housing 1, with a chamber inside the housing 1. A placement port 2 connected to the chamber is provided on the front side of the housing 1. A sealing door 3 for closing the placement port 2 is provided on the outer wall of the housing 1. A collection hopper 4 is provided at the bottom of the chamber. The bottom surface of the collection hopper 4 is inclined, and a discharge port is opened at the lowest point of the bottom surface. A vertically arranged sleeve 5 is inserted through the bottom of the collection hopper 4. The sleeve 5 is sealed to the bottom of the collection hopper 4. The top end of the sleeve 5 extends into the inside of the collection hopper 4, and the bottom end of the sleeve 5 extends out below the collection hopper 4. A rotating rod 6 is rotatably provided inside the sleeve 5. The top end of the rotating rod 6 extends out of the sleeve 5 and is fixedly connected to a horizontally arranged placement platform 7. The bottom end of the sleeve 5 extends out below the collection hopper 4 and is provided with a drive motor 8. The output shaft of the drive motor 8 is connected to the bottom end of the rotating rod 6. A mechanical arm is provided on the side of the chamber away from the placement port 2. A sandblasting body 9 is provided at the free end of the mechanical arm.

[0032] In this embodiment, during use, the operator opens the sealing door 3, places the workpiece to be sandblasted into the chamber through the placement port 2, and places it on the placement platform 7. The drive motor 8 is started, and its output shaft drives the rotating rod 6 to rotate within the sleeve 5, thereby rotating the placement platform 7 and the workpiece on it. Simultaneously, the robotic arm moves, and its free end, the sandblasting body 9, performs sandblasting on the rotating workpiece. The debris and dust generated during the sandblasting process fall into the collection hopper 4 below. Due to the inclined bottom surface of the collection hopper 4, the debris and dust collect along the inclined bottom surface and are discharged from the lowest outlet. The sleeve 5 passes through the bottom of the collection hopper 4 and is sealed to the bottom, effectively preventing dust leakage from the connection between the sleeve 5 and the collection hopper 4, ensuring the equipment's sealing and collection effect.

[0033] Example 2 Based on Example 1, the sandblasting body 9 includes a nozzle, the input end of which is connected to a sandblasting conveying pump through a spray pipe, and the feed end of the sandblasting conveying pump is connected to a sandblasting storage tank; a filter plate 10 is provided in the hopper 4 below the placement platform 7, the filter plate 10 is horizontally arranged inside the hopper 4, the periphery of the filter plate 10 is fixedly connected to the inner side wall of the hopper 4, and a material drop gap is left between the filter plate 10 and the inclined bottom surface, and the top end of the sleeve 5 is sealed through the filter plate 10; a sand suction machine 11 is connected to the discharge port through a sand return pipe, the output end of the sand suction machine 11 is connected to a cyclone separator 12, and the air outlet of the cyclone separator 12 is connected to a dust collector 13.

[0034] In this embodiment, during use, the sandblasting conveying pump delivers the abrasive from the sandblasting storage tank to the input end of the nozzle through the spray pipe. The nozzle then sprays the abrasive at high speed onto the workpiece surface for sandblasting. The treated abrasive and debris fall downwards onto the filter plate 10, which filters the falling material. Fine powder that meets the particle size requirements passes through the filter plate 10 and falls into the inclined bottom surface of the collecting hopper 4, converging at the discharge port to prevent larger debris from falling into the discharge port and causing blockage. The sand suction machine 11 pumps the sand discharged from the discharge port to the cyclone separator 12 through the sand return pipe. The cyclone separator 12 performs gas-solid separation of the sand and dust. The separated clean gas is discharged from the air outlet into the dust collector 13 for final purification, while the separated recyclable sand can be recycled. The top of the sleeve 5 is sealed through the filter plate 10, ensuring the sealing of the position where the rotating rod 6 passes through and preventing sand leakage from the penetration point.

[0035] In a preferred embodiment, the rotating rod 6 extends through the outer circumferential surface of the top end of the sleeve 5 and is connected to a scraping strip 14 via an L-shaped connector. The bottom side of the scraping strip 14 slides against the upper surface of the filter plate 10, and the top of the scraping strip 14 is provided with an arc-shaped guide surface.

[0036] Specifically, the drive motor 8 drives the rotating rod 6 to rotate, and the rotating rod 6 drives the scraper bar 14 to rotate synchronously through the L-shaped connector. The bottom side of the scraper bar 14 slides against the upper surface of the filter plate 10, and continuously scrapes the surface of the filter plate 10 during rotation, sweeping away the sand and impurities accumulated on the filter plate 10 to prevent clogging and ensure filtration efficiency. At the same time, the top of the scraper bar 14 is set with an arc-shaped guide surface. When the sand falls to the top of the scraper bar 14, the arc-shaped guide surface can smoothly guide the sand to both sides of the filter plate 10, reducing the accumulation of sand on the scraper bar 14 and increasing the rate at which the sand passes through the filter plate 10.

[0037] Example 3 Based on Embodiment 1, an ion air bar 16 is provided in the chamber near the placement port 2 via a support member 15. The ion air bar 16 is used in conjunction with a high-pressure generator and a compressed air source. The installation of the high-pressure generator and the compressed air source is common knowledge to those skilled in the art, and those skilled in the art can directly obtain the corresponding installation relationship and structure based on common knowledge. The air outlet of the ion air bar 16 is positioned above the placement platform 7. An elastic curtain 17 is also provided in the chamber. The elastic curtain 17 is sleeved between the fixed end and the free end of the robotic arm. The four edges of the elastic curtain 17 are respectively sealed and connected to the four inner side walls of the chamber. The elastic curtain 17 has a clearance hole for the free end of the robotic arm to pass through. The edge of the clearance hole elastically abuts against the outer wall of the robotic arm to spatially isolate the fixed end of the robotic arm from the area where the placement platform 7 is located.

[0038] In this embodiment, the ion air bar 16 is installed in the chamber near the placement port 2 via the support member 15. Its air outlet blows ion air upwards towards the placement table 7 to remove static electricity and dust from the surface of the sandblasted workpiece, reducing dust adsorption on the workpiece surface due to static electricity. Simultaneously, an elastic partition curtain 17 is fitted between the fixed end and free end of the robotic arm. The four edges of the partition curtain are sealed to the four inner walls of the chamber, spatially isolating the fixed end of the robotic arm (drive unit, mounting base, etc.) from the sandblasting area where the placement table 7 is located, preventing dust generated during sandblasting from contaminating the drive components and electrical components of the robotic arm. The free end of the robotic arm protrudes through a clearance hole on the partition curtain, the edge of which elastically abuts against the outer wall of the robotic arm, ensuring flexible movement of the free end while maintaining a tight seal.

[0039] In a preferred embodiment, the support member 15 includes a support tube 18 and a support rod 19. The bottom end of the support rod 19 is movably inserted into the support tube 18, and the top end of the support rod 19 protrudes from the top end of the support tube 18 and is connected to the inner wall of the cavity. Locking holes 20 are arranged in a linear array along the central axis on the outer side of the support rod 19. A movable rod 22 is rotatably connected to the outer side of the support tube 18 via a U-shaped member 21. The two ends of the movable rod 22 are respectively positioned facing the two ends of the support tube 18, and the top end of the movable rod 22 is provided with a locking mechanism. The insertion protrusion 23 is adapted to the fixed hole 20. The bottom end of the support tube 18 is fixedly fitted with a support ring 24. A limiting ring 25 is movably fitted on the outside of the support tube 18. A support spring 26 is fitted on the outside of the support tube 18 between the limiting ring 25 and the support ring 24. The two ends of the support spring 26 are respectively connected to the limiting ring 25 and the support ring 24, so that the limiting ring 25 is placed between the bottom end of the movable rod 22 and the support tube 18, and the end of the insertion protrusion 23 away from the movable rod 22 is placed in one of the locking holes 20.

[0040] Specifically, during use, the support member 15 is used to adjust the height of the ion fan bar 16. The bottom end of the support rod 19 is movably inserted into the support tube 18. Multiple locking holes 20 are axially formed on the outer side of the support rod 19. The movable rod 22 is rotatably connected to the outer side of the support tube 18 via a U-shaped member 21. In the locked state, the support spring 26 pushes the limiting ring 25 upward, placing the limiting ring 25 between the bottom end of the movable rod 22 and the support tube 18, pushing the bottom end of the movable rod 22 outward, causing the movable rod 22 to rotate around the U-shaped member 21. The insertion protrusion 23 at the top of the movable rod 22 then inserts inward into the locking hole 20 of the support rod 19, locking the support rod 19 and the support tube 18 together. When height adjustment is required, the operator pulls down the limiting ring 25 to compress the support spring 26, causing the limiting ring 25 to move out from between the bottom end of the movable rod 22 and the support tube 18. The bottom end of the movable rod 22 loses its limit. Pressing down the bottom end of the movable rod 22 causes the movable rod 22 to rotate around the U-shaped part 21, causing the insertion protrusion 23 to disengage from the locking hole 20. The support tube 18 can then be pulled vertically to adjust the height of the ion fan bar 16. After adjustment, the limiting ring 25 is released, and the support spring 26 resets, pushing the limiting ring 25 to lock again.

[0041] In a preferred embodiment, a connecting block 27 is fixedly provided on the inner wall of the cavity. A connecting port 28 is opened at the bottom end of the connecting block 27. The top end of the support rod 19 is rotatably connected to the connecting port 28. A cylindrical groove is opened at the top end of the support rod 19 along its central axis. A limiting rod 29 is slidably connected within the cylindrical groove. A mounting block 30 is provided on the side of the connecting port 28 away from the support tube 18. The bottom side of the mounting block 30 is concave and curved, and limiting tooth grooves 31 are arranged in an arc array. The two ends of the limiting tooth grooves 31 are respectively positioned facing the inner walls of the two sides of the connecting port 28. The top end of the limiting rod 29... A cylindrical groove is provided and connected to a semi-cylindrical block 32. The arc-shaped surface of the semi-cylindrical block 32 is set upward and is provided with a limiting protrusion 33 that meshes with the limiting tooth groove 31. Limiting holes 34 are provided in a straight array along the central axis on the outer side of the limiting rod 29. The limiting holes 34 correspond one by one with the locking holes 20 in the axial position. The bottom end of the limiting rod 29 is connected to a limiting spring 35. The bottom end of the limiting spring 35 is fixedly connected to the bottom of the cylindrical groove. After the end of the insertion protrusion 23 away from the movable rod 22 is placed in one of the locking holes 20, the end of the insertion protrusion 23 away from the movable rod 22 is placed in the limiting hole 34.

[0042] Specifically, during use, the top end of the support rod 19 is rotatably connected to the connecting block 27 on the inner wall of the cavity, thereby adjusting the angle of the support rod 19. A cylindrical groove is provided at the top end of the support rod 19, and the limiting rod 29 is slidably disposed within the cylindrical groove. A limiting protrusion 33 is provided on the semi-cylindrical block 32 at the top of the limiting rod 29, engaging with the limiting tooth groove 31 on the bottom side of the mounting block 30 to lock the rotation angle of the support rod 19. In the locked state, the limiting spring 35 pushes the limiting rod 29 upwards, keeping the limiting protrusion 33 of the semi-cylindrical block 32 engaged with the limiting tooth groove 31. Simultaneously, after the insertion protrusion 23 is inserted into the locking hole 20 of the support rod 19, it further passes through the locking hole 20 and inserts into the limiting hole 34 on the limiting rod 29, achieving double locking—locking both the relative height of the support rod 19 and the support tube 18, and locking the axial position of the limiting rod 29 within the cylindrical groove, thereby locking the rotation angle of the support rod 19. When angle adjustment is required, first release the locking of the insertion protrusion 23 to the limiting hole 34, then rotate the support tube 18 in the desired direction. The support tube 18 drives the support rod 19 to rotate around the connection port 28. At this time, a relative motion tendency is generated between the limiting protrusion 33 on the semi-cylinder block 32 and the limiting groove 31 on the mounting block 30. Since the groove wall of the limiting groove 31 and the tooth wall of the limiting protrusion 33 are both obliquely set, this relative motion tendency is converted into an axial component force on the limiting rod 29, which overcomes the elastic force of the limiting spring 35 and pushes the limiting rod 29 to slide downward along the cylindrical groove, so that the limiting protrusion 33 temporarily disengages from the limiting groove 31, and the support rod 19 can then rotate freely to the desired angle. After adjustment, stop rotating the support tube 18, the limiting spring 35 resets and pushes the limiting rod 29 to slide upward, so that the limiting protrusion 33 re-engages and locks with the limiting groove 31.

[0043] In a preferred embodiment, an L-shaped rotating member 36 is rotatably connected to the support tube 18 below the support ring 24 via a rotating bolt. One end of the L-shaped rotating member 36 is fixedly connected to the ion wind bar 16, and the other end of the L-shaped rotating member 36 is connected to a circular member 37. The outer ring side of the circular member 37 is provided with locking protrusions 38 arranged in a ring array. The bottom end face of the movable rod 22 is arc-shaped and has a locking groove 39 that meshes with the locking protrusions 38. The bottom end of the movable rod 22 rotates around the hinge point between the U-shaped member 21 and the movable rod 22, so that the locking protrusions 38 and the locking groove 39 selectively engage or disengage.

[0044] Specifically, in use, the L-shaped rotating component 36 is rotatably connected to the support tube 18 via a rotating bolt. One end of the L-shaped rotating component 36 is fixedly connected to the ion air bar 16, and the other end is connected to the circular component 37. The outer ring of the circular component 37 is provided with locking protrusions 38. The bottom end face of the movable rod 22 is arc-shaped and has a locking groove 39. In the locked state (i.e., when the height of the support rod 19 is locked), the top end of the movable rod 22 swings inward, and the insertion protrusion 23 is inserted into the locking hole 20. At the same time, the bottom end of the movable rod 22 swings outward, so that the locking groove 39 at the bottom end of the movable rod 22 meshes with the locking protrusions 38 on the circular component 37, thereby locking the rotation angle of the circular component 37 and the L-shaped rotating component 36 and the ion air bar 16 connected to it. When the angle of the ion bar 16 needs to be adjusted, pull down the limiting ring 25 to make the top of the movable rod 22 swing outward (the insertion protrusion 23 slides out of the locking hole 20), and at the same time, the bottom of the movable rod 22 swings inward, so that the locking tooth groove 39 moves away from the locking protrusion 38 as the bottom of the movable rod 22 moves inward, and the two are disengaged. At this time, the L-shaped rotating part 36 can rotate freely around the rotating bolt, and the operator can adjust the ion bar 16 to the required angle. After the adjustment is in place, release the limiting ring 25, the movable rod 22 returns to its original position, the locking tooth groove 39 re-engages with the locking protrusion 38, and the angle of the ion bar 16 is locked.

[0045] In a preferred embodiment, the top of the limiting ring 25 is provided with an inclined guide surface 40, and the bottom of the movable rod 22 is provided with an inclined guide surface 41 on the side facing the support tube 18; the inclined guide surface 40 at the top of the limiting ring 25 and the inclined guide surface 41 at the bottom of the movable rod 22 are slidably engaged, and when the limiting ring 25 moves upward, the inclined guide surface 40 pushes the bottom of the movable rod 22 to swing outward.

[0046] Specifically, in use, by setting the inclined guide surface 40 and the oblique guide surface 41, when the support tube 18 is pulled vertically to adjust the height, after the adjustment is in place, the support spring 26 resets and pushes the limiting ring 25, ensuring that the limiting ring 25 can smoothly slide into the space between the movable rod 22 and the support tube 18. At the same time, the cooperation structure of the inclined guide surface 40 and the oblique guide surface 41 smoothly converts the axial movement of the limiting ring 25 into the swinging movement of the movable rod 22, ensuring the smoothness and reliability of the unlocking operation. It should be noted that when the limiting ring 25 is placed between the bottom end of the movable rod 22 and the support tube 18, the inclined guide surface 40 and the oblique guide surface 41 do not contact each other.

[0047] In a preferred embodiment, a fixing spring 42 is fixed between the outer side of the top end of the support tube 18 and the top end of the movable rod 22. The fixing spring 42 is used to push the top end of the movable rod 22 away from the support tube 18 so that the movable rod 22 rotates around the U-shaped part 21, causing the bottom end of the movable rod 22 to swing toward the support tube 18, thereby causing the insertion protrusion 23 to slide out from the locking hole 20.

[0048] Specifically, in use, the fixing spring 42 is positioned between the outer side of the top of the support tube 18 and the top of the movable rod 22. When the operator pulls down the limiting ring 25 to allow the insertion protrusion 23 to slide out of the locking hole 20, the fixing spring 42 is compressed. Its elastic restoring force continuously pushes the top of the movable rod 22 away from the support tube 18, causing the movable rod 22 to rotate around the U-shaped part 21. The insertion protrusion 23 slides out of the limiting hole 34 and the locking hole 20, simultaneously causing the bottom of the movable rod 22 to swing towards the support tube 18, thereby keeping the locking groove 39 at the bottom of the movable rod 22 separated from the locking protrusion 38 on the circular part 37. In this state, the L-shaped rotating part 36 can freely rotate to adjust the angle of the ion fan rod 16 and also adjust its height. Once the angle adjustment is complete, the operator releases the limit ring 25, and the support spring 26 pushes the limit ring 25 upward. Under the action of the limit ring 25, the top of the movable rod 22 approaches the support tube 18 again, and the insertion protrusion 23 is reinserted into the locking hole 20.

[0049] Example 4 Based on Embodiment 1, a fixing clamp is provided on the top side of the placement platform 7; the fixing clamp can be any one of the following structures: pneumatic clamp, vacuum suction cup, manual quick clamp, magnetic suction cup. The above structures are common technical knowledge to those skilled in the art, and those skilled in the art can directly obtain the corresponding installation relationship and structure based on common knowledge.

[0050] The fixed fixture ensures that the workpiece will not be displaced relative to the rotating rod 6 as the placement table 7 rotates and when the sandblasting body 9 applies the force generated by sandblasting, thus ensuring the accuracy and consistency of sandblasting.

[0051] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A sandblasting device, comprising a housing (1), characterized in that: The housing (1) has a chamber inside. The front side of the housing (1) has a placement port (2) that communicates with the chamber. The outer wall of the housing (1) has a sealing door (3) for closing the placement port (2). The bottom of the chamber has a collection hopper (4). The bottom surface of the collection hopper (4) is inclined, and the lowest point of the bottom surface has a discharge port. The bottom of the collection hopper (4) is fitted with a vertically arranged sleeve (5). The sleeve (5) is sealed to the bottom of the collection hopper (4), and the top end of the sleeve (5) extends into the collection hopper (4). The bottom end of the sleeve (5) extends below the hopper (4). A rotating rod (6) is rotatably provided inside the sleeve (5). The top end of the rotating rod (6) extends out of the sleeve (5) and is fixedly connected to a horizontally arranged placement platform (7). The bottom end of the sleeve (5) extends below the hopper (4) and is provided with a drive motor (8). The output shaft of the drive motor (8) is connected to the bottom end of the rotating rod (6). A mechanical arm is provided on the side of the chamber away from the placement port (2). A sandblasting body (9) is provided at the free end of the mechanical arm.

2. The sandblasting equipment according to claim 1, characterized in that: The sandblasting body (9) includes a nozzle, the input end of which is connected to a sandblasting conveying pump through a spray pipe, and the feed end of the sandblasting conveying pump is connected to a sandblasting storage tank; a filter plate (10) is provided in the hopper (4) below the placement platform (7), the filter plate (10) is horizontally arranged inside the hopper (4), the periphery of the filter plate (10) is fixedly connected to the inner wall of the hopper (4), and a material drop gap is left between the filter plate (10) and the inclined bottom surface, and the top end of the sleeve (5) is sealed through the filter plate (10); the discharge port is connected to a sand suction machine (11) through a sand return pipe, the output end of the sand suction machine (11) is connected to a cyclone separator (12), and the air outlet of the cyclone separator (12) is connected to a dust collector (13).

3. The sandblasting equipment according to claim 2, characterized in that: The rotating rod (6) extends out of the outer circumference of the top end of the sleeve (5) and is connected to a scraping strip (14) by an L-shaped connector. The bottom side of the scraping strip (14) slides against the upper surface of the filter plate (10), and the top of the scraping strip (14) is set as an arc-shaped guide surface.

4. A sandblasting device according to claim 1, characterized in that: An ion fan bar (16) is provided in the chamber near the placement port (2) via a support member (15). The air outlet of the ion fan bar (16) is positioned above the placement platform (7). An elastic curtain (17) is also provided in the chamber. The elastic curtain (17) is sleeved between the fixed end and the free end of the robotic arm. The four edges of the elastic curtain (17) are respectively sealed to the four inner walls of the chamber. A clearance hole is provided on the elastic curtain (17) for the free end of the robotic arm to pass through. The edge of the clearance hole elastically abuts against the outer wall of the robotic arm to spatially isolate the fixed end of the robotic arm from the area where the placement platform (7) is located.

5. A sandblasting device according to claim 4, characterized in that: The support member (15) includes a support tube (18) and a support rod (19). The bottom end of the support rod (19) is movably inserted into the support tube (18), and the top end of the support rod (19) extends out of the top end of the support tube (18) and is connected to the inner wall of the cavity. Locking holes (20) are arranged in a linear array along the central axis on the outer side of the support rod (19). A movable rod (22) is rotatably connected to the outer side of the support tube (18) through a U-shaped piece (21). The two ends of the movable rod (22) are respectively arranged facing the two ends of the support tube (18). The top end of the movable rod (22) is provided with a fitting that matches the locking hole (20). With the protrusion (23), a support ring (24) is fixedly sleeved at the bottom end of the support tube (18), a limiting ring (25) is movably sleeved on the outside of the support tube (18), and a support spring (26) is sleeved on the outside of the support tube (18) between the limiting ring (25) and the support ring (24). The two ends of the support spring (26) are respectively connected to the limiting ring (25) and the support ring (24), so that the limiting ring (25) is placed between the bottom end of the movable rod (22) and the support tube (18), and the end of the insertion protrusion (23) away from the movable rod (22) is placed in one of the locking holes (20).

6. A sandblasting device according to claim 5, characterized in that: A connecting block (27) is fixedly provided on the inner wall of the cavity. A connecting port (28) is provided at the bottom end of the connecting block (27). The top end of the support rod (19) is rotatably connected to the connecting port (28). A cylindrical groove is provided at the top end of the support rod (19) along the central axis of the support rod (19). A limiting rod (29) is slidably connected in the cylindrical groove. An installation block (30) is provided on the side of the connecting port (28) away from the support tube (18). The bottom side of the installation block (30) is set with a concave curved surface and has limiting tooth grooves (31) arranged in an arc array. The two ends of the limiting tooth grooves (31) are respectively set towards the inner walls of the two sides of the connecting port (28). The top end of the limiting rod (29) extends out of the cylindrical groove. The rod (29) is connected to a semi-cylindrical block (32), with the arc-shaped surface of the semi-cylindrical block (32) facing upwards and a limiting protrusion (33) that meshes with the limiting tooth groove (31). The limiting rod (29) has limiting holes (34) arranged in a straight array along its central axis on the outer side. The limiting holes (34) correspond one-to-one with the locking holes (20) in the axial position. The bottom end of the limiting rod (29) is connected to a limiting spring (35), and the bottom end of the limiting spring (35) is fixedly connected to the bottom of the cylindrical groove. The end of the insertion protrusion (23) away from the movable rod (22) is placed in one of the locking holes (20), and the end of the insertion protrusion (23) away from the movable rod (22) is placed in the limiting hole (34).

7. A sandblasting device according to claim 6, characterized in that: An L-shaped rotating component (36) is rotatably connected to the support tube (18) below the support ring (24) via a rotating bolt. One end of the L-shaped rotating component (36) is fixedly connected to the ion wind bar (16), and the other end of the L-shaped rotating component (36) is connected to a circular component (37). The outer ring side of the circular component (37) is provided with locking protrusions (38) arranged in a ring array. The bottom end face of the movable rod (22) is arc-shaped and has a locking groove (39) that meshes with the locking protrusions (38). The bottom end of the movable rod (22) rotates around the hinge point between the U-shaped component (21) and the movable rod (22) as the center, so that the locking protrusions (38) and the locking groove (39) selectively mesh or separate.

8. A sandblasting device according to claim 6, characterized in that: The top of the limiting ring (25) is surrounded by an inclined guide surface (40), and the bottom of the movable rod (22) is provided with an inclined guide surface (41) on the side facing the support tube (18). The inclined guide surface (40) at the top of the limiting ring (25) and the inclined guide surface (41) at the bottom of the movable rod (22) slide together. When the limiting ring (25) moves upward, the inclined guide surface (40) pushes the bottom of the movable rod (22) to swing outward.

9. A sandblasting device according to claim 6, characterized in that: A fixing spring (42) is fixed between the outer side of the top end of the support tube (18) and the top end of the movable rod (22). The fixing spring (42) is used to push the top end of the movable rod (22) away from the support tube (18) so that the movable rod (22) rotates around the U-shaped piece (21) and drives the bottom end of the movable rod (22) to swing toward the support tube (18), thereby causing the insertion protrusion (23) to slide out from the locking hole (20).

10. A sandblasting device according to claim 1, characterized in that: The top side of the placement platform (7) is provided with a fixing clamp.

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