Conveying device of roller way passing type shot blasting machine

Abstract

The invention discloses a conveying device of a roller way passing type shot blasting machine, and relates to the technical field of shot blasting. The device comprises an outer shell, two sets of symmetrically-distributed frames are arranged in the middle of the outer shell, a plurality of conveying rollers distributed at equal intervals are rotationally installed in the middles of the two sets of frames, and a conveying mechanism is arranged in the middle of the outer shell and used for adjusting the body position of the workpiece to be subjected to shot blasting. The conveying mechanism comprises a steering assembly which comprises a fixing frame fixedly installed on one side of the lower portion of a frame. After a workpiece is conveyed to a designated station, the jacking air cylinder firstly jacks the workpiece away from the conveying roller, and then the steering air cylinder drives the rotating shaft and the rotating frame to rotate by a preset angle through the transmission rod, so that the workpiece can be subjected to fixed-point and fixed-angle body position adjustment in the shot blasting chamber, and shot blasting dead angles or shadow areas generated due to the fixed posture of the workpiece are effectively avoided; and it is ensured that the surfaces and inner cavities of complex workpieces can be fully impacted by shots.

Description

Technical Field

[0001] This invention relates to the field of shot blasting technology, specifically to a conveying device for a roller conveyor shot blasting machine. Background Technology

[0002] Roller conveyor shot blasting machines are widely used equipment in the field of surface treatment. They use high-speed projectiles to impact the surface of workpieces to remove rust, oxide scale and residues, achieving the purpose of cleaning and strengthening. The core working process of this type of equipment relies on an efficient workpiece conveying system, which usually uses a motor-driven conveyor roller conveyor to allow workpieces to pass continuously through the shot blasting chamber.

[0003] Referring to the patent document: Patent Publication No. CN221474818U, Patent Publication Date 2024-08-06, a roller conveyor type shot blasting machine is provided, relating to the field of shot blasting technology. It solves the problem that due to the production of steel structures of different specifications, tilting occurs during the placement process, increasing the number of dead angles in the shot blasting machine and affecting the cleaning quality. The roller conveyor type shot blasting machine includes: a transmission base; a mounting shell is installed on the top of the transmission base; two sets of adjusting cylinders are symmetrically installed below the mounting shell; the transmission roller drives the steel material to move into the mounting shell. When the steel material tilts, it contacts the connecting block and moves along the connecting block to the space between the limiting blocks to straighten the steel material. This reduces the increase in dead angles caused by the tilting of the steel material during shot blasting, ensuring the cleaning stability of the shot blasting machine.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found: Existing conveying devices for transporting workpieces are mostly limited to linear transport. However, in actual shot blasting operations, especially for workpieces with complex structures and multiple internal cavities, a fixed conveying posture can easily lead to some parts of the workpiece being blocked, forming shot blasting dead zones or shadow areas. This prevents the shot from covering the workpiece evenly. Workpieces that need to be shot blasted from both sides usually require manual or robotic arms to flip them over twice before they are reinserted into the conveying equipment. This process is labor-intensive. In addition, the conveying plane height of existing conveying devices is usually fixed and cannot flexibly adapt to workpieces of different thicknesses or sizes. When the workpiece size varies greatly, a fixed roller height may result in an unsatisfactory relative position between the workpiece and the shot blaster flow field, affecting shot blasting efficiency. Summary of the Invention

[0005] To address the problems of existing conveying devices having limited functionality, resulting in blind spots in shot blasting, requiring manual secondary flipping, and being difficult to adapt to workpieces of different specifications, the present invention aims to provide a conveying device for a roller conveyor type shot blasting cleaning machine.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a conveying device for a roller conveyor shot blasting machine, comprising an outer shell, wherein two sets of symmetrically distributed frames are provided in the middle of the outer shell, and multiple equally spaced conveying rollers are rotatably mounted in the middle of each set of frames; a conveying mechanism is provided in the middle of the outer shell for adjusting the position of the workpiece to be shot blasted; the conveying mechanism includes: The steering assembly includes a fixed frame that is fixedly installed on one side of the lower part of the frame. A lifting cylinder is fixedly installed at the top center of the fixed frame. A lifting plate is fixedly installed at the drive end of the lifting cylinder. A steering cylinder is movably installed on one side of the top of the lifting plate. A rotating shaft is rotatably installed at the top center of the lifting plate. A transmission rod is fixedly installed at the lower part of the rotating shaft. The drive end of the steering cylinder is installed at one end of the transmission rod through a fisheye bearing. A rotating frame is fixedly installed at the top of the rotating shaft. A flipping assembly, located in the middle of two sets of frames, is used to flip the workpiece to the reverse side; Adjustment components, located at both ends inside the housing, are used to adjust the overall height of the conveying assembly.

[0007] Preferably, the flipping assembly includes two mounting brackets fixedly installed on opposite sides of the middle of the two sets of frames. A rotating disk is rotatably installed on the middle of the opposite sides of the two mounting brackets. Multiple slots distributed in a ring array are opened on the middle of both sides of the rotating disk. A drive assembly is provided at one end of the rotating disk.

[0008] Preferably, the adjustment assembly includes base plates fixedly installed at the lower parts of both ends of the outer casing. A double-ended screw is rotatably installed in the middle of each base plate. Slider blocks are threaded onto both sides of each double-ended screw. Support rods are movably installed on the upper parts of each slider. A top plate is fixedly installed on one side of the bottom of each of the two sets of frames. The upper parts of multiple support rods are movably installed on the lower part of the top plate. A worm gear is fixedly installed at one end of each double-ended screw. A drive shaft is rotatably installed on one side of the lower part of the outer casing. Worms are fixedly installed on both sides of the drive shaft, and both worms mesh with the worm gears. A drive motor is fixedly installed on one side of the lower part of the outer casing, and one end of the drive shaft is fixedly installed at the drive end of the drive motor.

[0009] Preferably, a set of guide rods is fixedly installed on the lower part of each of the two fixed frames, and the two lifting plates are installed on the upper part of the guide rods through linear bearings.

[0010] Preferably, the drive assembly includes a servo motor fixedly mounted at the middle of one end of the mounting bracket, and a rotating disk fixedly mounted at the middle of one side of the drive end of the servo motor.

[0011] Preferably, a set of conveyor belts is installed on opposite sides of both sets of frames, and the conveyor belts and conveyor rollers are used in conjunction with each other.

[0012] Preferably, a limit rod is fixedly installed on the lower part of both substrates, and the lower part of the slider is slidably installed on both sides of the limit rod.

[0013] Preferably, a protective cover is fixedly installed on one side of the outer casing, and both ends of the drive shaft are mounted on the middle of the two sides of the protective cover via deep groove ball bearings.

[0014] Beneficial effects Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this application, after the workpiece is transported to the designated station, the lifting cylinder first lifts the workpiece away from the conveying roller, and then the steering cylinder drives the rotating shaft and rotating frame to rotate by a predetermined angle through the transmission rod, so that the workpiece can be adjusted at a fixed point and angle in the shot blasting chamber. This effectively avoids the shot blasting dead angle or shadow area caused by the fixed posture of the workpiece, and ensures that the surface and inner cavity of complex workpieces can be fully impacted by the shot, thereby greatly improving the uniformity of cleaning and the surface treatment quality.

[0015] 2. In this application, the workpiece is smoothly introduced into the horizontal slot by the conveyor belt, and then the servo motor drives the turntable to rotate 180° to flip the workpiece. The whole process does not require manual intervention and can realize the automatic flipping of the workpiece, ensuring that the shot blasting cleaning effect on both sides of the workpiece is completely consistent, and solving the problem of low efficiency of traditional manual flipping or secondary processing.

[0016] 3. This application utilizes a drive motor to transmit power via a transmission shaft and worm gear to a worm wheel, which in turn drives a double-headed screw to rotate. This drives the sliders on both sides to move synchronously in opposite directions or in opposite directions. As a result, the support rod lifts or lowers the entire frame and the upper conveying and working plane. Furthermore, the self-locking characteristic of the worm gear structure ensures the absolute stability of the height after adjustment. This allows the conveying and working height of the equipment to be flexibly and smoothly adjusted according to the different thicknesses of the workpieces or different process requirements, significantly enhancing the adaptability of a single piece of equipment to workpieces of different specifications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic cross-sectional view of the present invention.

[0019] Figure 3 This is a schematic diagram of the conveying mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the steering component structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the flipping component structure of the present invention.

[0022] Figure 6This is a schematic diagram of the adjustment component structure of the present invention.

[0023] In the diagram: 1. Outer shell; 11. Frame; 12. Conveyor roller; 2. Conveying mechanism; 21. Steering assembly; 211. Fixing frame; 212. Lifting plate; 2121. Guide rod; 213. Lifting cylinder; 214. Steering cylinder; 215. Transmission rod; 216. Rotating shaft; 217. Rotating frame; 22. Flipping assembly; 221. Mounting frame; 222. Servo motor; 223. Rotating disk; 2231. Slot; 224. Conveyor belt; 23. Adjustment assembly; 231. Base plate; 232. Double-ended screw; 233. Top plate; 234. Slider; 2341. Limiting rod; 235. Support rod; 236. Worm gear; 2361. Worm; 237. Transmission shaft; 238. Drive motor; 239. Protective cover. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example: Figure 1-6 As shown, this invention provides a conveying device for a roller conveyor shot blasting machine, including an outer shell 1. Two symmetrically distributed frames 11 are located in the middle of the outer shell 1. Each set of frames 11 consists of two symmetrically distributed frames, constructed from H-beams. Multiple equally spaced conveying rollers 12 are rotatably mounted in the middle of both sets of frames 11. Both ends of the conveying rollers 12 are connected to their frames 11 via deep groove ball bearings (model 6206-2Z) and are made of 45# seamless steel pipe. The conveying rollers 12 are interconnected via synchronous pulleys and synchronous belts, and their rotation is controlled by a conventional stepper motor to convey the workpiece placed on top. A conveying mechanism 2 is located in the middle of the outer shell 1 for adjusting the position of the workpiece to be shot blasted. The conveying mechanism 2 includes: The steering assembly 21 includes a fixed frame 211 fixedly installed on one side of the lower part of the frame 11. The fixed frame 211 is welded from steel plate and connected to the frame 11 by rigid bolts. A lifting cylinder 213 is fixedly installed at the top center of the fixed frame 211. The lifting cylinder 213 is a model SC63×200-S cylinder, which is connected to the PLC port to realize start and stop control. When the workpiece is conveyed to the upper part of the rotating frame 217 by the conveyor roller 12, the lifting plate 212 is activated and lifted together with the rotating frame 217, lifting the workpiece on top. At this time, the workpiece is no longer in contact with the conveyor roller 12. The lifting plate 212 is fixedly installed at the drive end of the lifting cylinder 213. A steering cylinder 214 is movably installed on one side of the top of the lifting plate 212. The steering cylinder 214 is a model SC63×200-S cylinder. The lifting plate 212, designated MGPM25×100, has a rotating shaft 216 rotatably mounted at the top center. A transmission rod 215 is fixedly mounted at the lower part of the rotating shaft 216. The drive end of the steering cylinder 214 is mounted on one end of the transmission rod 215 via a fisheye bearing. A rotating frame 217 is fixedly mounted at the top of the rotating shaft 216. When the workpiece is lifted and no longer in contact with the conveyor roller 12, the lifting cylinder 213 stops, and the steering cylinder 214 starts, pushing 215 to drive the rotating shaft 216 to rotate around the hinge point, thereby causing the upper rotating frame 217 to rotate. This allows the workpiece to be shot-blasted more evenly through steering. The flipping assembly 22 is located in the middle of the two sets of frames 11 and is used to flip the workpiece. Adjustment components 23 are located at both ends inside the outer casing 1 and are used to adjust the overall height of the conveying component.

[0026] The flipping assembly 22 includes two mounting brackets 221 fixedly installed on opposite sides of the middle of the two sets of frames 11. The two mounting brackets 221 are made of Q235 steel plates and are connected to the two sets of frames 11 by welding to form a whole. A rotating disk 223 is rotatably installed on the middle of the opposite sides of the two mounting brackets 221. Multiple slots 2231 distributed in a ring array are opened on the middle of both sides of the rotating disk 223. A drive assembly is provided at one end of the rotating disk 223. When the slots 2231 are in a horizontal state, the bottom surface of the slots 2231 is flush with the upper surface of the conveyor belt 224, thereby ensuring that the workpiece can smoothly enter the slots 2231 under its conveying, and can be smoothly driven from the top of the other side of the conveyor belt 224.

[0027] The adjustment assembly 23 includes base plates 231 fixedly installed at the lower parts of both ends of the outer casing 1. Double-ended screws 232 are rotatably mounted in the middle of each base plate 231. Slider blocks 234 are threaded onto both sides of each double-ended screw 232. Support rods 235 are movably mounted on the upper parts of each slider 234. Top plates 233 are fixedly installed on one side of the bottom of each of the two sets of frames 11. The upper parts of multiple support rods 235 are movably mounted on the lower part of the top plate 233. The top plate 233 is connected and fixed to the frame 11 by high-strength bolts. Worm gears 2 are fixedly mounted on one end of each of the two double-ended screws 232. 36. A drive shaft 237 is rotatably mounted on one side of the lower part of the outer casing 1. Worms 2361 are fixedly mounted on both sides of the drive shaft 237. Both worms 2361 are meshed with worm wheels 236. The structure of the worm wheels 2361 and worms 236 has a self-locking function to ensure the stability of the structure. A drive motor 238 is fixedly mounted on one side of the lower part of the outer casing 1. One end of the drive shaft 237 is fixedly mounted on the drive end of the drive motor 238. The drive motor 238 is a Y100L-2 motor, which is controlled to start and stop by an AC contactor. The contactor coil is controlled by a PLC interface.

[0028] A set of guide rods 2121 are fixedly installed on the lower part of each of the two fixed frames 211. The two lifting plates 212 are installed on the upper part of the guide rods 2121 through linear bearings. The linear bearings are of model LM20UU, which allows the guide rods 2121 to slide within the linear bearings to achieve more stable up and down movement.

[0029] The drive assembly includes a servo motor 222 fixedly mounted at the middle of one end of the mounting bracket 221, and a rotating disk 223 fixedly mounted at the middle of one side of the drive end of the servo motor 222. The servo motor 222 is an electric motor, which can intermittently control the rotation of the rotating disk 233 according to the conveying interval length of the workpiece, so that both ends of the workpiece can smoothly enter the slot 2231.

[0030] Each of the two sets of frames 11 has a set of conveyor belts 224 installed on opposite sides. The conveyor belts 224 are used in conjunction with the conveyor rollers 12. The conveyor belts 224 are PVC industrial belts with anti-slip texture on the surface. The conveyor belts 224 are driven by a geared motor (model RV050-10) and are at the same height as the conveyor rollers 12.

[0031] Limiting rods 2341 are fixedly installed on the lower part of both substrates 231, and the lower parts of sliders 234 are slidably installed on both sides of the limiting rods 2341. The limiting rods 2341 can guide the movement of sliders 234, making the sliders 234 slide more stably when rotated by the double-headed screw 232.

[0032] A protective cover 239 is fixedly installed on one side of the outer casing 1. Both ends of the drive shaft 237 are installed in the middle of the two sides of the protective cover 239 through deep groove ball bearings. The worm gear 236, worm 2361 and its drive shaft 237 are all located inside one side of the protective cover 239.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] During operation, the workpiece is first placed on multiple conveyor rollers 12 supported by two sets of symmetrical frames 11. The conveyor rollers 12 rotate under the drive of a stepper motor, smoothly conveying the workpiece. The workpiece is conveyed into the conveyor roller 12 in the middle of one side frame 11. When the workpiece reaches the station of the steering assembly 21, the PLC controls the lifting cylinder 213 to start, pushing the lifting plate 212 to rise vertically along the guide rod 2121, so that the workpiece is separated from the conveyor roller 12. Then the steering cylinder 214 is activated, driving the rotating shaft 216 to rotate through the transmission rod 215, thereby driving the rotating frame 217 at the top and the workpiece to rotate by a certain angle, realizing the position adjustment, making the shot blasting more uniform. After completion, the mechanism is reset, and the workpiece falls back to the conveyor roller 12 to continue moving forward. The workpiece is sent to the flipping assembly 22 station. The conveyor belt 224 on the mounting frame 221 cooperates with the conveyor roller 12 to smoothly feed the workpiece into the horizontal slot 2231 on the rotating disk 223. Then, the servo motor 222 drives the rotating disk 223 to rotate according to the command to complete the flipping of the workpiece. After flipping, the workpiece is sent out by the other side conveyor belt 224. The other side is another set of frames 11, which is also equipped with a steering assembly 21 to ensure that both sides of the workpiece can receive uniform shot blasting treatment. To adapt to different working conditions, the overall conveying height of the conveying equipment can be adjusted via the adjustment component 23. Starting the drive motor 238 rotates the transmission shaft 237 and the worm gears 2361 at both ends, driving the worm wheel 236 at the end of the double-headed screw 232. The rotation of the double-headed screw 232 causes the sliders 234 on both sides to move along the limit rod 2341. The support rod 235 then lifts or lowers the top plate 233, which is fixed to the frame 11, thus achieving smooth lifting and lowering of the entire conveying device. The worm wheel 236 and worm gear 2361 have a self-locking structure, reliably maintaining the set height. Throughout the entire process, all power components are coordinated and controlled by a PLC, achieving fully automatic, continuous, and efficient shot blasting cleaning operations.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A conveying device of a roller pass-type shot blasting machine, comprising an outer housing (1), characterized in that: The middle part of the outer shell (1) is provided with two groups of symmetrically distributed frames (11), the middle part of the two groups of frames (11) is rotatably provided with a plurality of equally spaced conveying rollers (12), the middle part of the outer shell (1) is provided with a conveying mechanism (2) for adjusting the position of the workpiece to be processed, the conveying mechanism (2) comprises: The steering assembly (21) comprises a fixed frame (211) fixedly installed on one side of the lower part of the frame (11), a jacking cylinder (213) fixedly installed at the top end of the fixed frame (211), a lifting plate (212) fixedly installed at the driving end of the jacking cylinder (213), a steering cylinder (214) movably installed on one side of the top end of the lifting plate (212), a rotating shaft (216) rotatably installed at the middle part of the top end of the lifting plate (212), a transmission rod (215) fixedly installed at the lower part of the rotating shaft (216), and the driving end of the steering cylinder (214) is installed at one end of the transmission rod (215) through a fisheye bearing, and the top end of the rotating shaft (216) is fixedly installed with a rotating frame (217). The turnover assembly (22) is arranged at the middle part of the two groups of frames (11) and is used for turning over the workpiece. The adjusting assembly (23) is arranged at the both ends of the inner part of the outer shell (1) and is used for adjusting the height of the conveying assembly as a whole.

2. A conveying device for a roller pass-type shot blasting machine according to claim 1, characterized in that: The turnover assembly (22) comprises two mounting frames (221) fixedly installed on the opposite sides of the middle part of the two groups of frames (11), a rotating disc (223) rotatably installed at the middle part of the opposite sides of the two mounting frames (221), a plurality of annularly arrayed clamping grooves (2231) formed in the middle part of the two sides of the rotating disc (223), and a driving assembly arranged at one end of the rotating disc (223).

3. A conveying device for a roller pass-type shot blasting machine according to claim 1, characterized in that The adjusting assembly (23) comprises two base plates (231) fixedly installed at the lower part of the both ends of the outer shell (1), a double-headed screw rod (232) rotatably installed at the middle part of each of the two base plates (231), a sliding block (234) threadedly installed at the two sides of each of the two double-headed screw rods (232), a support rod (235) movably installed at the upper part of each of the sliding blocks (234), a top plate (233) fixedly installed at one side of the bottom end of each of the two groups of frames (11), the upper part of each of a plurality of support rods (235) movably installed at the lower part of the top plate (233), a worm wheel (236) fixedly installed at one end of each of the two double-headed screw rods (232), a transmission shaft (237) rotatably installed at one side of the lower part of the outer shell (1), a worm (2361) fixedly installed at the two sides of the transmission shaft (237), the two worm (2361) and the worm wheel (236) are connected with each other, a driving motor (238) fixedly installed at one side of the lower part of the outer shell (1), and one end of the transmission shaft (237) is fixedly installed at the driving end of the driving motor (238).

4. A conveying device for a roller pass-type shot blasting machine according to claim 1, characterized in that The lower part of each of the two fixed frames (211) is fixedly installed with a group of guide rods (2121), and each of the two lifting plates (212) is installed at the upper part of the guide rod (2121) through a linear bearing.

5. A conveying device for a roller pass-type shot blasting machine according to claim 2, characterized in that The driving assembly comprises a servo motor (222) fixedly installed at the middle part of one end of the mounting frame (221), and one side of the middle part of the rotating disc (223) is fixedly installed at the driving end of the servo motor (222).

6. A conveying device for a roller pass-type shot blasting machine according to claim 1, characterized in that: A group of conveying belts (224) are installed on the opposite sides of the frame (11), and the conveying belts (224) are used in cooperation with the conveying rollers (12).

7. A conveying device for a roller pass-type shot blasting machine according to claim 3, characterized in that, The lower parts of the two base plates (231) are fixedly installed with limiting rods (2341), and the lower parts of the sliding blocks (234) are slidingly installed on the two sides of the limiting rods (2341).

8. A conveying device for a roller pass-type shot blasting machine according to claim 3, characterized in that One side of the outer shell (1) is fixedly installed with a protective cover (239), and the two ends of the transmission shaft (237) are installed in the middle parts of the two sides of the protective cover (239) through deep groove ball bearings.

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