An abrasive jet machining apparatus for surface treatment of a workpiece

Abstract

The present application relates to the technical fields of abrasive jet machining, in particular to a kind of abrasive jet machining equipment for workpiece surface treatment.The cabin is provided with spray station and air blowing station in cabin, further comprising: lower abrasive nozzle and lower air nozzle, symmetrically installed in the lower part of cabin, work turret, rotationally installed on cabin, the bottom of work turret is equipped with the partition that sealingly fits with the inner wall of cabin, the bottom of work turret is equipped with upper abrasive nozzle and upper air nozzle, upper abrasive nozzle and lower abrasive nozzle are diagonally opposite and the working time sequence of two is alternated, lower air nozzle and upper air nozzle are diagonally opposite and the working time sequence of two is alternated, the outer periphery of work turret is equipped with two material clamping mechanisms.The beneficial effects of the present application are: effectively avoid the problem of jet impact density distribution uneven caused by single rotation, so that the surface of each orientation of complex shape workpiece can obtain the abrasive impact of alternate coverage.

Description

Technical Field

[0001] This invention relates to the field of abrasive blasting technology, specifically to an abrasive blasting equipment for workpiece surface treatment. Background Technology

[0002] Abrasive blasting is a special processing method that uses a high-speed airflow to carry fine abrasive particles to impact the surface of a workpiece to remove material. This technology has been widely used in the field of material surface treatment due to its advantages such as a wide range of processable materials and no heat-affected zone. Existing abrasive blasting equipment typically uses a single nozzle or multiple nozzles arranged at a fixed angle to blast the workpiece. However, this type of equipment has many shortcomings in practical applications: Firstly, the nozzle's spray direction is relatively fixed, and the abrasive jet energy is concentrated in the central area of ​​the jet, resulting in a limited coverage area for a single processing operation. Secondly, the workpiece often rotates in only one direction during the processing, and the relative motion trajectory between the abrasive and the workpiece surface is singular, making it difficult to achieve isotropic and uniform processing. Third, blasting and surface cleaning usually need to be completed in different equipment or processes, which not only reduces processing efficiency but also increases the risk of secondary surface contamination during workpiece transfer. Based on this, the present invention provides an abrasive blasting processing device for workpiece surface treatment to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing an abrasive blasting processing device for workpiece surface treatment, thus solving the problem that existing equipment is unable to perform uniform and dead-angle-free abrasive blasting processing on all surfaces of complex-shaped workpieces.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: An abrasive blasting processing device for workpiece surface treatment, comprising a chamber, wherein a blasting station and an air blowing station are arranged inside the chamber, and further comprising: The lower abrasive nozzle and the lower air nozzle are symmetrically installed on the lower part of the cabin; The working frame is rotatably mounted on the cabin body. The bottom of the working frame is equipped with a partition that is sealed and fitted to the inner wall of the cabin body. The bottom of the working frame is equipped with an upper abrasive nozzle and an upper air nozzle. The upper abrasive nozzle and the lower abrasive nozzle are diagonally opposite each other and their working sequence is alternate. The lower air nozzle and the upper air nozzle are diagonally opposite each other and their working sequence is alternate. Two clamping mechanisms are installed on the outer periphery of the working frame. The clamping mechanism includes a rotating shaft, a swing drive module, and a hinge shaft located below the rotating shaft. A hinge seat is fixedly installed at the bottom of the rotating shaft, and the hinge shaft is hinged to the hinge seat. A positioning hanger is fixedly installed on the hinge shaft, and a workpiece is clamped on the positioning hanger. The swing drive module is configured to drive the hinge shaft to reciprocate. A corrugated sealing cover is rotatably sleeved on the rotating shaft, and the corrugated sealing cover is fixedly connected to the working frame. A transmission mechanism is used to drive the rotating shaft to rotate at a first speed in the spraying station, at a second speed in the air blowing station, and to drive the rotating shaft to reciprocate along its axial direction in two different strokes in the air blowing station.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Optionally, the system also includes a support frame, on which the cabin is fixedly mounted. A central control unit is fixedly mounted on the end face of the support frame. Material ports are opened on the end face of the cabin at the positions corresponding to the spraying and air blowing stations, and material gates are hinged to the end face of the cabin. Two operating cylinders are installed on the material gates, and rubber sleeves are installed at the ends of the two operating cylinders. A discharge valve is installed at the bottom of the cabin, and a positioning nut is threaded onto the positioning hanger at the position below the corresponding workpiece.

[0007] Optionally, it also includes a jetting tee and an air intake tee. A central nozzle is provided at the axis of the working frame. The central nozzle has mutually isolated jetting channels and air blowing channels. The bottom ends of the jetting channels and air blowing channels are provided with valve holes. The two valve holes are selectively connected to the upper abrasive nozzle and the upper air nozzle. The upper abrasive nozzle is connected to the jetting channel. The upper air nozzle is connected to the air blowing channel. The two ends of the jetting tee are connected to the jetting channel and the lower abrasive nozzle, respectively. The two ends of the air intake tee are connected to the air blowing channel and the lower air nozzle, respectively.

[0008] Optionally, solenoid valves are provided at the connection points between the injection tee and the upper and lower abrasive nozzles, as well as at the connection points between the upper and lower air nozzles and the air inlet tee. The electrical control terminals of the solenoid valves are connected to the central control unit. Flange joints are installed on both the injection tee and the air inlet tee. The angles between the upper and lower abrasive nozzles and the axis of rotation, as well as the angles between the upper and lower air nozzles and the axis of rotation, are all 45°.

[0009] Optionally, the clamping mechanism further includes a drive shaft and a reciprocating slide slidably connected to the working frame. The rotating shaft is driven by the drive shaft, and the rotating shaft is rotatably mounted on the reciprocating slide via bearings. A first gear is mounted on the drive shaft, and a sleeve shaft is rotatably sleeved on the drive shaft via bearings. A second gear is mounted on both the sleeve shaft and the drive shaft. Both the first gear and the second gear are driven by a transmission mechanism. A camshaft is rotatably mounted on the working frame, and the camshaft is driven by the sleeve shaft. Two symmetrically arranged eccentric blocks are mounted on the camshaft, and the eccentricities of the two eccentric blocks are different. A push roller is rotatably mounted on the reciprocating slide. When the camshaft rotates, the two eccentric blocks alternately push the push roller. A spring is installed between the reciprocating slide and the working frame.

[0010] Optionally, the drive shaft has a synchronization slot with an opening at the bottom, and the top of the rotating shaft is fixedly provided with a plug section that is slidably connected to the synchronization slot. The cross-section of the plug section and the synchronization slot are both regular polygons. Synchronous bevel gears are fixedly installed on both the sleeve shaft and the cam shaft, and the two synchronous bevel gears mesh with each other.

[0011] Optionally, the swing drive module includes a reciprocating bevel gear fixedly mounted on the hinge shaft. A torsion spring is provided at the rotational connection between the hinge shaft and the hinge seat. An incomplete bevel gear is fixedly mounted on the reciprocating slide at a position above and below the corresponding reciprocating bevel gear. When the shaft rotates, the two incomplete bevel gears alternately mesh with the reciprocating bevel gear.

[0012] Optionally, the center angles corresponding to the effective meshing arc segments on the two incomplete bevel gears are both 120°, and the effective meshing arc segments on the two incomplete bevel gears are offset by 180°.

[0013] Optionally, the transmission mechanism includes a gear cylinder rotatably mounted on a working frame via bearings. The gear cylinder is rotatably connected to a vertical frame via bearings. Two motors are fixedly mounted on the vertical frame, and synchronous toothed belts are drivenly connected to the output shafts of both motors. One synchronous toothed belt is drivenly connected to the working frame, and the other synchronous toothed belt is drivenly connected to the gear cylinder. An internal toothed ring is fixedly mounted on the gear cylinder. Guide shafts are rotatably mounted on the vertical frame at positions corresponding to the spraying and air-blowing stations. External toothed gears are mounted on both guide shafts, and both external toothed gears mesh with the internal toothed rings. A low-speed gear is fixedly mounted on the guide shaft in the spraying station, and the low-speed gear meshes with a second gear on the transmission shaft in the spraying station. A high-speed gear and a reciprocating transmission gear are fixedly mounted on the guide shaft in the air-blowing station. The high-speed gear meshes with a first gear on the transmission shaft in the air-blowing station, and the reciprocating transmission gear meshes with a second gear on the sleeve shaft in the air-blowing station.

[0014] Optionally, the midpoint of the line connecting the upper abrasive nozzle and the lower abrasive nozzle, as well as the midpoint of the line connecting the upper air nozzle and the lower air nozzle, are both on the axis of the rotating shaft.

[0015] The beneficial effects of this invention are: 1. This invention drives the workpiece to rotate continuously at the spraying station via a rotating shaft. Simultaneously, the swing drive module drives the hinge shaft to reciprocate around the horizontal axis, creating a dynamically changing incident angle and impact position between the workpiece surface and the diagonally arranged, alternately operating upper and lower abrasive nozzles. This effectively avoids the problem of uneven jet impact density distribution caused by a single rotational motion, ensuring that all surfaces of complex-shaped workpieces receive alternating abrasive impact, thus improving the uniformity of surface treatment. Furthermore, in the air blowing station, the invention drives the rotating shaft to rotate at a higher speed and perform two different strokes of reciprocating motion along the axial direction via a transmission mechanism. Combined with the diagonally arranged, alternately operating upper and lower air nozzles, the airflow can sweep away residual abrasive from multiple angles on the workpiece surface. The spraying station and the air blowing station are connected by the same working frame and sealed by a partition, realizing continuous operation of spraying and air blowing within the same equipment. This avoids the risk of secondary contamination caused by workpiece transfer and improves processing efficiency.

[0016] 2. This invention utilizes the coordinated transmission of a gear cylinder, an internal gear ring, and multiple sets of gears located at the spraying and air-blowing stations. This enables the intermittent rotation of the workpiece frame, the low-speed rotation of the spraying station's rotating shaft, the high-speed rotation of the air-blowing station's rotating shaft, and the axial reciprocating motion to be achieved by the same gear cylinder drive source. While ensuring precise timing coordination of the movements at each station, this simplifies the transmission structure and reduces control complexity. In the air-blowing station, the high-speed rotation of the rotating shaft, combined with two different strokes of axial reciprocating motion, generates a changing centrifugal force field and airflow scouring path on the workpiece surface, which helps to enhance the removal of residual abrasive. In the spraying station, the workpiece rotation and reciprocating oscillation are combined, and with the diagonal alternating spraying of the upper and lower abrasive nozzles, the abrasive impact forms multiple cross-coverages in the spatial dimension, solving the problems of surface treatment blind spots and unevenness that exist in single rotational motion or fixed-angle spraying methods. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an abrasive blasting processing device for workpiece surface treatment according to the present invention; Figure 2 For the present invention Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the structure of the chamber and the feed inlet of the present invention; Figure 4 This is a schematic diagram of the working frame and partition of the present invention; Figure 5 For the present invention Figure 4 A front view structural diagram; Figure 6 This is a schematic diagram of the structure of the gear cylinder and the internal gear ring of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of a half-section structure; Figure 8 This is a schematic diagram of a half-section of the central nozzle of the present invention; Figure 9 This is a schematic diagram of the valve hole and upper air nozzle of the present invention; Figure 10 This is a half-sectional schematic diagram of the push roller and drive shaft of the present invention; Figure 11 This is a schematic diagram of the structure of the incomplete bevel gear and eccentric block of the present invention; Figure 12 For the present invention Figure 11 A structural diagram from another perspective; Figure 13 This is a schematic diagram of the structure of the rotating shaft and the hinge shaft of the present invention; Figure 14 This is a schematic diagram of the structure of the guide shaft of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: 1. Chamber; 2. Positioning nut; 3. Lower abrasive nozzle; 4. Lower air nozzle; 5. Working frame; 6. Gear cylinder; 101. Vertical frame; 102. Central control unit; 103. Material inlet; 104. Material gate; 105. Operating hand cylinder; 106. Unloading valve; 107. Injection tee; 108. Air inlet tee; 501. Partition; 502. Central nozzle; 503. Upper abrasive nozzle; 504. Upper air nozzle; 505. Rotating shaft; 506. Hinge shaft; 507. Hinge seat; 508. Positioning hanger seat; 509. Workpiece; 510. 511. Jet channel; 512. Air blowing channel; 513. Drive shaft; 514. Reciprocating slide; 515. First gear; 516. Sleeve shaft; 517. Second gear; 518. Camshaft; 519. Eccentric block; 520. Push roller; 521. Spring; 522. Torsion spring; 523. Incomplete bevel gear; 524. Corrugated seal cover; 525. Valve hole; 601. Motor; 602. Internal gear ring; 603. Guide shaft; 604. External gear; 605. Low-speed gear; 606. High-speed gear; 607. Reciprocating transmission gear. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] The present invention provides the following preferred embodiments. like Figure 1-14 As shown, an abrasive blasting processing device for workpiece surface treatment includes a chamber 1, in which a blasting station and an air blowing station are arranged, the blasting station and the air blowing station being symmetrically arranged at 180° in the circumferential direction. It also includes a support frame 101, a cabin body 1 fixedly installed on the support frame 101, a central control host 102 fixedly installed on the end face of the support frame 101, a material port 103 is opened on the end face of the cabin body 1 at the corresponding spraying station and air blowing station, and a material gate 104 is hinged on the end face of the cabin body 1, two operating cylinders 105 are installed on the material gate 104, and rubber sleeves are installed at the ends of the two operating cylinders 105. A discharge valve 106 is installed at the bottom of the cabin body 1. The support frame 101 provides a stable installation foundation for the cabin 1, and the central control host 102 is integrated on it for easy centralized control; The interior of the chamber 1 is divided into two stations: spraying and air blowing. The material inlet 103 and the hinged material gate 104 on its end face, together with the operating hand cylinder 105 with a rubber sleeve at the tail end, provide a relatively closed and easy-to-operate visual window for loading and unloading workpiece 509, which helps to reduce the escape of abrasive dust during the processing. The discharge valve 106 at the bottom is used to periodically discharge the deposited waste abrasive. Also includes: The lower abrasive nozzle 3 and the lower air nozzle 4 are symmetrically installed on the lower part of the chamber 1; The working frame 5 is rotatably mounted on the cabin 1. The bottom of the working frame 5 is fitted with a partition 501 that is sealed to the inner wall of the cabin 1. This partition is used to separate the spraying station and the air blowing station during operation. In the separated state, the bottom of both the spraying station and the air blowing station is open and connected to the unloading valve 106. The bottom of the working frame 5 is equipped with an upper abrasive nozzle 503 and an upper air nozzle 504, which are of the same specifications. During operation, as the working frame 5 rotates, the spraying media of the upper abrasive nozzle 503 and the upper air nozzle 504 alternately switch. The nozzle in the spraying position is the upper abrasive nozzle 503 and sprays abrasive, while the nozzle in the air blowing position is the upper air nozzle 504 and sprays high-pressure gas. Both the upper abrasive nozzle 503 and the lower abrasive nozzle 3 are located at the spraying station; Both the upper air nozzle 504 and the lower air nozzle 4 are located at the air blowing station; The upper abrasive nozzle 503 and the lower abrasive nozzle 3 are diagonally opposite each other and their working sequence alternates. The lower air nozzle 4 and the upper air nozzle 504 are diagonally opposite each other and their working sequence alternates. It also includes a jetting three-way pipe 107 and an air inlet three-way pipe 108. A central nozzle 502 is provided at the axis of the working frame 5. The central nozzle 502 is provided with a jetting channel 510 and an air blowing channel 511 that are isolated from each other. A valve hole 524 is provided at the bottom end of both the jetting channel 510 and the air blowing channel 511. The two valve holes 524 are selectively connected to the upper abrasive nozzle 503 and the upper air nozzle 504. The valve hole 524 at the jet channel 510 corresponds to the jetting station, and the valve hole 524 at the air blowing channel 511 corresponds to the position of the air blowing station. Specifically, the nozzle connected to the valve hole 524 at the jet channel 510 is the upper abrasive nozzle 503, and the nozzle connected to the valve hole at the air blowing channel 511 is the upper air nozzle 504. The upper abrasive nozzle 503 is connected to the jet channel 510, the upper air nozzle 504 is connected to the air blowing channel 511, the two ends of the jet tee 107 are connected to the jet channel 510 and the lower abrasive nozzle 3 respectively, and the two ends of the air inlet tee 108 are connected to the air blowing channel 511 and the lower air nozzle 4 respectively.

[0022] Solenoid valves are installed at the connection points of the injection tee 107 with the upper abrasive nozzle 503 and the lower abrasive nozzle 3, and at the connection points of the upper air nozzle 504 and the lower air nozzle 4 with the air intake tee 108. The electrical control terminals of the solenoid valves are communicatively connected to the central control unit 102. Flange joints are installed on both the injection tee 107 and the air intake tee 108. The included angles between the upper abrasive nozzle 503 and the lower abrasive nozzle 3 and the axis of the rotating shaft 505, as well as the included angles between the upper air nozzle 504 and the lower air nozzle 4 and the axis of the rotating shaft 505, are all 45°. In the working process, the jet tee 107 simultaneously leads the abrasive source to the jet flow channel 510 of the central nozzle 502 and the lower abrasive nozzle 3 inside the chamber 1. The air inlet three-way pipe 108 simultaneously leads the air source to the air blowing channel 511 of the central nozzle 502 and the lower air nozzle 4 in the cabin 1. By controlling the opening and closing of the corresponding solenoid valves through the central control host 102, the upper abrasive nozzle 503 and the lower abrasive nozzle 3 can work alternately at the spraying station, as well as the upper air nozzle 504 and the lower air nozzle 4 can work alternately at the air blowing station. Since these nozzles are arranged diagonally at 45° to the axis of rotation of the workpiece 509, this alternating spray pattern allows the abrasive or airflow to act on the surface of the workpiece 509 from multiple directions. Two clamping mechanisms are installed on the outer periphery of the working frame 5; The clamping mechanism includes a rotating shaft 505, a swing drive module, and a hinge shaft 506 located below the rotating shaft 505. A hinge seat 507 is fixedly installed at the bottom of the rotating shaft 505. The hinge shaft 506 is hinged to the hinge seat 507. A positioning hanger 508 is fixedly installed on the hinge shaft 506. A workpiece 509 is clamped on the positioning hanger 508. The swing drive module is configured to drive the hinge shaft 506 to reciprocate. A corrugated sealing cover 523 is rotatably sleeved on the rotating shaft 505. The corrugated sealing cover 523 is fixedly connected to the working frame 5. In a preferred embodiment, the midpoint of the line connecting the upper abrasive nozzle 503 and the lower abrasive nozzle 3, as well as the midpoint of the line connecting the upper air nozzle 504 and the lower air nozzle 4, are both on the axis of the rotating shaft 505. The axis of the hinge shaft 506 is perpendicular to the axis of the rotating shaft 505. The hinge shaft 506 is set horizontally, and the rotating shaft 505 is set vertically. A positioning nut 2 is threadedly installed on the positioning bracket 508 at a position below the corresponding workpiece 509. The positioning nut 2 is used to clamp the workpiece 509 tightly onto the positioning bracket 508. The swing drive module includes a reciprocating bevel gear fixedly mounted on the hinge shaft 506. A torsion spring 521 is provided at the rotational connection between the hinge shaft 506 and the hinge seat 507. An incomplete bevel gear 522 is fixedly mounted on the reciprocating slide 513 at positions above and below the corresponding reciprocating bevel gear. When the rotating shaft 505 rotates, the two incomplete bevel gears 522 alternately mesh with the reciprocating bevel gear.

[0023] The center angles corresponding to the effective meshing arcs on the two incomplete bevel gears 522 are both 120°, and the effective meshing arcs on the two incomplete bevel gears 522 are offset by 180°. In the working process, the two incomplete bevel gears 522 fixed on the reciprocating carriage 513 are arranged with their effective meshing arcs offset by 180°. When the rotating shaft 505 drives the entire clamping mechanism to rotate, the two fixed, non-rotating incomplete bevel gears 522 will alternately mesh with the reciprocating bevel gear on the hinge shaft 506. When meshing, the hinge shaft 506 is driven to deflect against the force of the torsion spring 521. When disengaging, the hinge shaft 506 is reset under the action of the torsion spring 521. This process enables the positioning hanger 508 for mounting the workpiece 509 to reciprocate. The aforementioned combined reciprocating oscillation and rotational motion allows each surface of the workpiece 509 to be more fully exposed to the abrasive flow or airflow, which helps to improve the coverage and consistency of the surface treatment. A transmission mechanism is used to drive the rotary shaft 505 to rotate at a first speed at the spraying station, to rotate at a second speed at the air blowing station, and to drive the rotary shaft 505 to reciprocate along its axial direction in two different strokes at the air blowing station.

[0024] In a preferred embodiment, the second rotational speed is 3.5 times the first rotational speed, the first rotational speed is 10 r / min, and the second rotational speed is 35 r / min; The clamping mechanism also includes a drive shaft 512 and a reciprocating slide 513 slidably connected to the working frame 5. A rotating shaft 505 is drivenly connected to the drive shaft 512 and is rotatably mounted on the reciprocating slide 513 via bearings. A first gear 514 is mounted on the drive shaft 512, and a sleeve shaft 515 is rotatably sleeved on the drive shaft 512 via bearings. A second gear 516 is mounted on both the sleeve shaft 515 and the drive shaft 512. Both the first gear 514 and the second gear 516 are connected via... Driven by a transmission mechanism, a camshaft 517 is rotatably mounted on the working frame 5. The camshaft 517 is connected to the sleeve shaft 515. Two symmetrically arranged eccentric blocks 518 are mounted on the camshaft 517. The eccentricity of the two eccentric blocks 518 is different from that of each other. A push roller 519 is rotatably mounted on the reciprocating slide 513. When the camshaft 517 rotates, the two eccentric blocks 518 alternately push the push roller 519. A spring 520 is installed between the reciprocating slide 513 and the working frame 5.

[0025] The drive shaft 512 has a timing slot with an opening at the bottom. The top of the rotating shaft 505 is fixedly provided with a plug section that is slidably connected to the timing slot. The cross-section of both the plug section and the timing slot is a regular polygon. The sleeve shaft 515 and the cam shaft 517 are both fixedly installed with timing bevel gears, and the two timing bevel gears mesh with each other.

[0026] The transmission mechanism includes a gear cylinder 6 rotatably mounted on the working frame 5 via bearings. The gear cylinder 6 is rotatably connected to the upright frame 101 via bearings. Two motors 601 are fixedly mounted on the upright frame 101. Synchronous toothed belts are driven to the output shafts of both motors 601. One synchronous toothed belt is driven to the working frame 5, and the other synchronous toothed belt is driven to the gear cylinder 6. An internal gear ring 602 is fixedly mounted on the gear cylinder 6. Guide shafts 603 are rotatably mounted on the upright frame 101 at positions corresponding to the spraying and air blowing stations. External gears 6 are mounted on both guide shafts 603. 04. Both external gears 604 are meshed with internal gear rings 602. A low-speed gear 605 is fixedly installed on the guide shaft 603 in the spraying station. The low-speed gear 605 is meshed with the second gear 516 on the drive shaft 512 in the spraying station. A high-speed gear 606 and a reciprocating gear 607 are fixedly installed on the guide shaft 603 in the air blowing station. The high-speed gear 606 is meshed with the first gear 514 on the drive shaft 512 in the air blowing station. The reciprocating gear 607 is meshed with the second gear 516 on the sleeve shaft 515 in the air blowing station.

[0027] In the workflow, one motor 601 drives the work frame 5 to rotate intermittently via a synchronous toothed belt, transferring the workpiece 509 between the spraying station and the air blowing station. Another motor 601 drives the gear cylinder 6 to rotate continuously, and the internal toothed ring 602 on the gear cylinder 6 drives the guide shaft 603 and its gear set located at the two stations to rotate. At the blasting station, the low-speed gear 605 meshes with the second gear 516 on the drive shaft 512, driving the rotating shaft 505 to rotate at a lower first speed to meet the needs of abrasive blasting. When the workpiece 509 is moved into the air blowing station, the high-speed gear 606 meshes with the first gear 514 on the transmission shaft 512, driving the rotating shaft 505 to rotate at a higher second speed. At the same time, the reciprocating transmission gear 607 meshes with the gear on the sleeve shaft 515, driving the camshaft 517 to rotate. Two eccentric blocks 518 with different eccentricities on the camshaft 517 alternately push the push roller 519, thereby causing the reciprocating slide 513, the rotating shaft 505 and the workpiece 509 to produce two strokes of axial reciprocating motion. This axial reciprocating motion, combined with high-speed centrifugal rotation, helps to improve the removal efficiency and effect of abrasive on the surface of the workpiece 509.

[0028] The specific steps for using this invention are as follows: First, the operator clamps the workpiece 509 onto the positioning hanger 508 through the material gate 104 and the operating handle 105 on the end face of the chamber 1, and fixes it with the positioning nut 2. After the equipment is started, a motor 601 drives the working frame 5 to rotate intermittently, transferring the workpiece 509 between the spraying station and the air blowing station. At the same time, the partition 501 separates the two stations to prevent interference. At the spraying station, the transmission mechanism drives the rotating shaft 505 to rotate at the first speed through the low-speed gear 605. The central control host 102 controls the solenoid valve to make the upper abrasive nozzle 503 and the lower abrasive nozzle 3 work alternately. The abrasive is sprayed from the nozzles at a 45° angle to each other through the spraying three-way pipe 107 onto the surface of the workpiece 509. At the same time, the two incomplete bevel gears 522 of the swing drive module alternately mesh with the reciprocating bevel gear, driving the hinge shaft 506 to swing back and forth, so that the workpiece 509 swings in combination during rotation, ensuring uniform surface treatment. When the workpiece 509 is moved into the air blowing station, the transmission mechanism switches to high-speed gear 606 to drive the rotating shaft 505 to rotate at a higher second speed. At the same time, the reciprocating transmission gear 607 drives the camshaft 517 to rotate. The two eccentric blocks 518 with different eccentricities on it alternately push the push roller 519, so that the rotating shaft 505 reciprocates along the axis with two strokes. At this time, the central control host 102 controls the solenoid valve to make the upper air nozzle 504 and the lower air nozzle 4 work alternately. The airflow is sprayed from the diagonal nozzles through the air inlet three-way pipe 108. The high-speed rotation and axial reciprocating motion work together to effectively remove residual abrasive from the surface of the workpiece 509. Throughout the process, both abrasive and airflow are supplied through the isolation channel of the central nozzle 502, and waste is periodically discharged through the discharge valve 106 at the bottom of the chamber 1, thereby achieving automated and efficient processing of the workpiece 509 from jet treatment to air blowing cleaning.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. An abrasive blasting processing device for workpiece surface treatment, comprising a chamber (1), wherein a blasting station and an air blowing station are provided inside the chamber (1), characterized in that, Also includes: The lower abrasive nozzle (3) and the lower air nozzle (4) are symmetrically installed on the lower part of the cabin (1); The working frame (5) is rotatably mounted on the cabin (1). The bottom of the working frame (5) is fitted with a partition (501) that is sealed to the inner wall of the cabin (1). The bottom of the working frame (5) is fitted with an upper abrasive nozzle (503) and an upper air nozzle (504). The upper abrasive nozzle (503) and the lower abrasive nozzle (3) are diagonally opposite each other and their working sequence is alternate. The lower air nozzle (4) and the upper air nozzle (504) are diagonally opposite each other and their working sequence is alternate. Two clamping mechanisms are installed on the outer periphery of the working frame (5). The clamping mechanism includes a rotating shaft (505), a swing drive module, and a hinge shaft (506) located below the rotating shaft (505). A hinge seat (507) is fixedly installed at the bottom of the rotating shaft (505). The hinge shaft (506) is hinged to the hinge seat (507). A positioning hanger (508) is fixedly installed on the hinge shaft (506). A workpiece (509) is clamped on the positioning hanger (508). The swing drive module is configured to drive the hinge shaft (506) to rotate back and forth. A corrugated sealing cover (523) is rotatably sleeved on the rotating shaft (505). The corrugated sealing cover (523) is fixedly connected to the working frame (5). A transmission mechanism is provided for driving the rotating shaft (505) to rotate at a first speed at the spraying station, at a second speed at the air blowing station, and driving the rotating shaft (505) to reciprocate along its axial direction in two different strokes at the air blowing station.

2. The abrasive blasting processing equipment for workpiece surface treatment according to claim 1, characterized in that, It also includes a support frame (101), the cabin (1) is fixedly installed on the support frame (101), the end face of the support frame (101) is fixedly installed with a central control host (102), the end face of the cabin (1) is provided with a material port (103) at the corresponding spraying station and air blowing station, and the end face of the cabin (1) is hinged with a material gate (104), two operating cylinders (105) are installed on the material gate (104), the ends of the two operating cylinders (105) are all equipped with rubber sleeves, the bottom of the cabin (1) is equipped with a discharge valve (106), and the positioning hanger (508) is threaded with a positioning nut (2) at the position below the corresponding workpiece (509).

3. The abrasive blasting processing equipment for workpiece surface treatment according to claim 1, characterized in that, It also includes a jetting tee (107) and an air inlet tee (108). A central nozzle (502) is provided at the axis of the working frame (5). The central nozzle (502) is provided with a jetting channel (510) and an air blowing channel (511) that are isolated from each other. A valve hole (524) is provided at the bottom end of both the jetting channel (510) and the air blowing channel (511). The two valve holes (524) are selectively connected to the upper abrasive nozzle (503) and the upper air nozzle (504). The upper abrasive nozzle (503) is connected to the jetting channel (510). The upper air nozzle (504) is connected to the air blowing channel (511). The two ends of the jetting tee (107) are connected to the jetting channel (510) and the lower abrasive nozzle (3) respectively. The two ends of the air inlet tee (108) are connected to the air blowing channel (511) and the lower air nozzle (4) respectively.

4. The abrasive blasting processing equipment for workpiece surface treatment according to claim 3, characterized in that, Solenoid valves are provided at the connection points between the injection tee (107) and the upper abrasive nozzle (503) and the lower abrasive nozzle (3), as well as at the connection points between the upper air nozzle (504) and the lower air nozzle (4) and the air inlet tee (108). The electrical control terminals of the solenoid valves are connected to the central control host (102). Flange joints are installed on both the injection tee (107) and the air inlet tee (108).

5. The abrasive blasting processing equipment for workpiece surface treatment according to claim 1, characterized in that, The clamping mechanism further includes a drive shaft (512) and a reciprocating slide (513) on a slidingly connected working frame (5). The rotating shaft (505) is drivenly connected to the drive shaft (512). The rotating shaft (505) is rotatably mounted on the reciprocating slide (513) via bearings. A first gear (514) is mounted on the drive shaft (512). A sleeve shaft (515) is rotatably sleeved on the drive shaft (512) via bearings. A second gear (516) is mounted on both the sleeve shaft (515) and the drive shaft (512). Both the first gear (514) and the second gear (516) are... Driven by a transmission mechanism, a camshaft (517) is rotatably mounted on the working frame (5). The camshaft (517) is connected to the sleeve shaft (515). Two symmetrically arranged eccentric blocks (518) are mounted on the camshaft (517). The eccentricity of the two eccentric blocks (518) is different from that of each other. A push roller (519) is rotatably mounted on the reciprocating slide (513). When the camshaft (517) rotates, the two eccentric blocks (518) alternately push the push roller (519). A spring (520) is installed between the reciprocating slide (513) and the working frame (5).

6. The abrasive blasting processing equipment for workpiece surface treatment according to claim 5, characterized in that, The drive shaft (512) has a synchronous slot with an opening at the bottom. The top of the rotating shaft (505) is fixedly provided with a plug section that is slidably connected to the synchronous slot. The cross-section of the plug section and the synchronous slot are both regular polygons. Synchronous bevel gears are fixedly installed on the sleeve shaft (515) and the cam shaft (517). The two synchronous bevel gears mesh with each other.

7. The abrasive blasting processing equipment for workpiece surface treatment according to claim 6, characterized in that, The swing drive module includes a reciprocating bevel gear fixedly mounted on the hinge shaft (506). A torsion spring (521) is provided at the rotational connection between the hinge shaft (506) and the hinge seat (507). An incomplete bevel gear (522) is fixedly mounted on the reciprocating slide (513) at a position above and below the corresponding reciprocating bevel gear. When the rotating shaft (505) rotates, the two incomplete bevel gears (522) alternately mesh with the reciprocating bevel gear.

8. The abrasive blasting processing equipment for workpiece surface treatment according to claim 7, characterized in that, The effective meshing arc segments on the two incomplete bevel gears (522) correspond to each other, and the effective meshing arc segments on the two incomplete bevel gears (522) are staggered.

9. An abrasive blasting processing device for workpiece surface treatment according to claim 1, characterized in that, The transmission mechanism includes a gear cylinder (6) rotatably mounted on a working frame (5) via bearings. The gear cylinder (6) is rotatably connected to a vertical frame (101) via bearings. Two motors (601) are fixedly mounted on the vertical frame (101). Synchronous toothed belts are driven to the output shafts of both motors (601). One synchronous toothed belt is driven to the working frame (5), and the other synchronous toothed belt is driven to the gear cylinder (6). An internal toothed ring (602) is fixedly mounted on the gear cylinder (6). Guide shafts (603) are rotatably mounted on the vertical frame (101) at positions corresponding to the spraying and air blowing stations. External gears are mounted on both guide shafts (603). 604), both external gears (604) are meshed with internal gear rings (602), a low-speed gear (605) is fixedly installed on the guide shaft (603) in the spraying station, the low-speed gear (605) is meshed with the second gear (516) on the transmission shaft (512) in the spraying station, a high-speed gear (606) and a reciprocating transmission gear (607) are fixedly installed on the guide shaft (603) in the air blowing station, the high-speed gear (606) is meshed with the first gear (514) on the transmission shaft (512) in the air blowing station, and the reciprocating transmission gear (607) is meshed with the second gear (516) on the sleeve shaft (515) in the air blowing station.

10. An abrasive blasting processing device for workpiece surface treatment according to claim 1, characterized in that, The midpoint of the line connecting the upper abrasive nozzle (503) and the lower abrasive nozzle (3), as well as the midpoint of the line connecting the upper air nozzle (504) and the lower air nozzle (4), are all on the axis of the rotating shaft (505).

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