Shot blasting process feeding and conveying device

Abstract

The utility model relates to the technical field of shot blasting material loading device, concretely is shot blasting process material loading conveying device, including conveying frame, the support fixed below conveying frame, the drive part fixed above conveying frame and the multiple roller shafts rotationally connected on conveying frame, drive part is used for driving roller shaft synchronous rotation, conveying frame includes the one section of roller way and two sections of roller way that mutually splice, and the included angle is established between one section of roller way and two sections of roller way, and the included angle of two sections of roller way relative to horizontal plane is less than the included angle of one section of roller way relative to horizontal plane, the surface of roller shaft is equipped with spiral line shape convex, and the direction of rotation of spiral line shape convex is set up symmetrically relative to the mid-plane of the axial direction of roller shaft, the roller shaft surface still is equipped with a plurality of spherical convex, and spherical convex sets up between the gap of spiral line shape convex, this device can weaken the sliding risk of work piece in the conveying process, reduces the conveying time as a whole, promotes the conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of shot blasting feeding devices, specifically to a feeding and conveying device for the shot blasting process. Background Technology

[0002] Shot blasting is a metal surface treatment technology that uses specialized shot blasting equipment. The workpiece is placed in the shot blasting chamber inside the equipment, and then high-speed metal shot is sprayed onto the workpiece surface to achieve functions such as removing oxide scale, removing rust, polishing burrs, and strengthening the surface of the workpiece after heat treatment. This process directly affects the subsequent processing accuracy, coating adhesion, and fatigue life of the workpiece.

[0003] For some large and heavy annular billets, manually feeding them into the shot blasting machine is extremely laborious. Therefore, industrial applications typically use conveying devices to feed the billets into the shot blasting machine. Traditional conveying devices use roller conveyors. Furthermore, because the shot blasting machine inlet has a certain height, the roller conveyor needs to be inclined to facilitate the transport of the lower-positioned billets into the inlet. For example, the existing technology "A Roller Conveyor" (Publication No.: CN109205172A) uses a motor to drive gears. Since the gears mesh with one side of a straight toothed plate, and the upper end of the straight toothed plate is hinged to the bottom of the roller support via a support plate, the height of one end of the roller support can be adjusted by moving the straight toothed plate up and down. This allows for adjustment of the conveying angle of the roller conveyor to meet different conveying height requirements. However, the existing technology still has the following technical problems: In existing technology, the roller conveyor consists of parallel cylindrical rollers. The transport of workpieces relies on the friction between the rollers and the bottom surface of the workpiece. However, for annular workpieces, the hollow structure means that the contact area between the workpiece and the roller surface is only a local area at the edge of the annular ring. The support points are dispersed and the force is uneven. In addition, the roller surface is smooth. When transporting at an angle, the workpiece is affected by the component of gravity, which makes it very easy for the workpiece to slide down the inclined direction during the transport process, resulting in a reduction in transport efficiency. Utility Model Content

[0004] This utility model provides a feeding and conveying device for shot blasting, which can solve the problem that the existing conveying rollers easily cause the workpiece to slide downwards along the inclined direction during the conveying process, resulting in a reduction in conveying efficiency.

[0005] This application provides the following technical solution: a shot blasting process feeding and conveying device, including a conveying frame, a support fixed below the conveying frame, a drive unit fixed above the conveying frame, and multiple rollers rotatably connected to the conveying frame, wherein the drive unit is used to drive the rollers to rotate synchronously; The conveyor frame includes a section of roller conveyor and a section of roller conveyor spliced ​​together. An angle is provided between the section of roller conveyor and the section of roller conveyor, and the angle between the section of roller conveyor and the horizontal plane is smaller than the angle between the section of roller conveyor and the horizontal plane. The surface of the roller shaft is provided with helical protrusions, and the direction of the helix of the helix protrusions is symmetrically arranged with respect to the midpoint of the axial direction of the roller shaft. The surface of the roller shaft is also provided with a plurality of spherical protrusions, which are arranged between the gaps of the helical protrusions.

[0006] Beneficial effects: It weakens the downward trend of the workpiece, reduces the risk of slippage, and improves conveying efficiency. In this design, the first-stage roller conveyor uses a large included angle to quickly lift workpieces at a low position, shortening the initial conveying path. When the workpiece enters the second-stage roller conveyor, the tilt angle decreases significantly, reducing the gravitational component of the workpiece sliding along the lower part of the roller conveyor. This reduces the downward tendency of the workpiece in the second-stage roller conveyor, especially near the shot blasting machine inlet, where the gentle angle helps the workpiece enter the inlet more smoothly, ensuring continuous conveying. Simultaneously, the spiral protrusions on the roller surface are symmetrically arranged relative to the axial midpoint of the roller, generating friction on the workpiece surface towards the axial midpoint of the roller when the roller rotates. This force is perpendicular to the tilt direction of the roller conveyor, mitigating the downward tendency of the workpiece caused by tilted conveying. The spherical protrusions on the roller change the surface roughness, enhancing anti-slip properties and ensuring smooth upward conveying of the workpiece. Combined with the spiral protrusions and the two-stage roller conveyor, the overall conveying time is reduced, and conveying efficiency is improved.

[0007] Furthermore, both the first-section roller conveyor and the second-section roller conveyor include two opposing frames and multiple reinforcing ribs welded and fixed between the frames, with the reinforcing ribs evenly distributed at equal intervals along the length of the frames.

[0008] Beneficial effects: The first and second roller conveyors, with their symmetrical and stable mounting bases evenly distributed along the length of the frame, provide a symmetrical and stable mounting base for the rollers and evenly distribute the concentrated load of the heavy annular blanks. This effectively resists the bending and torsion of the frame during inclined conveying, prevents frame deformation, ensures the long-term stability of the frame, reduces maintenance frequency, and ensures continuous and reliable conveying.

[0009] Furthermore, bearings are installed on the frame, and the spindles at both ends of the roller shaft pass through the inner ring of the bearing and are interference-fitted with the inner ring of the bearing.

[0010] Beneficial effects: The bearings on the frame are interference-fitted with the roller spindle, which can not only ensure the stable installation of the roller and prevent radial movement or axial displacement during rotation, but also reduce the rotational resistance of the roller and ensure the smooth synchronous operation of multiple rollers. This prevents the slippage of the annular blank conveyor due to unstable roller operation, thus ensuring conveying efficiency and stability.

[0011] Furthermore, one end of the spindle of the roller extends out of the frame body through the bearing, and two driven sprockets are coaxially fixed on the spindle extending out of the frame body. Driven chains are installed on the driven sprockets, and all rollers rotate synchronously through the connection of the driven chains.

[0012] Beneficial effects: One end of the roller shaft extends out of the frame and is coaxially fixed with two driven sprockets, which are then connected by a driven chain. On the one hand, the cooperation between the double sprockets and the chain can enhance the transmission stability and avoid the chain detachment problem that is prone to occur with single sprockets. On the other hand, it can ensure that multiple roller shafts rotate synchronously, preventing uneven force and slippage along the inclined direction during the conveying of the annular billet due to different roller shaft speeds, ensuring the billet moves smoothly upward and improving conveying efficiency.

[0013] Furthermore, the frame body is also provided with a protective shell, the two ends of which are fixedly connected to the frame body by screws, and the protective shell is located on the side where the sprocket is located.

[0014] Beneficial effects: The protective shell on the side of the outer sprocket of the frame is fixed with screws, which can isolate the shot fragments and dust in the shot blasting process and prevent them from entering the transmission parts of the sprocket and chain, causing jamming or wear, and ensuring the stability of the synchronous rotation of the roller shaft; it can also avoid the safety hazards caused by exposed transmission parts, and the screw fixing facilitates subsequent disassembly and maintenance, ensuring the long-term reliable operation of the conveying device.

[0015] Furthermore, a baffle is fixed to the bottom of the section of the roller conveyor; and casters are installed at the bottom of the support.

[0016] Beneficial effects: A fixed baffle at the bottom of the roller conveyor prevents the annular billet from falling downwards due to sliding during the initial inclined conveying phase, thus avoiding conveying interruptions; casters installed at the bottom of the support allow for flexible adjustment of the conveying device's position, facilitating precise docking with the shot blasting machine inlet, and also enabling easy equipment relocation or maintenance, thus balancing conveying safety and operational flexibility. Furthermore, the drive unit includes a support fixed above the frame and a geared motor fixed above the support. The main shaft of the geared motor is equipped with a drive sprocket, which is connected to a driven sprocket located on the frame via a drive chain.

[0017] Beneficial effects: The drive unit fixes the geared motor with a support, and then connects the drive sprocket and drive chain with the roller sprocket on the frame for transmission. This can provide a stable and suitable driving force for the rollers, and ensure efficient power transmission through chain transmission, ensuring that all rollers rotate synchronously and avoiding slippage of the annular billet conveyor due to insufficient power or unstable transmission. At the same time, the support fixing method also improves the stability of the geared motor installation and reduces the impact of operating vibration. Attached Figure Description

[0018] Figure 1 This is the main structural view of the present invention.

[0019] Figure 2 for Figure 1 A top view of the middle roller conveyor.

[0020] Figure 3 for Figure 2 An enlarged view of the end of a section of the roller conveyor. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method: The markings in the accompanying drawings include: 1. First-section roller conveyor; 2. Second-section roller conveyor; 3. Support; 4. Gear motor; 5. Drive sprocket; 6. Drive chain; 7. Bracket; 8. Caster wheel; 9. Baffle; 10. Frame; 11. Roller shaft; 11. Spiral protrusion; 111. Spherical protrusion; 112. Reinforcing rib; 12. Blank; 13. Protective shell; 14. Screw; 141. Driven sprocket; 15. Bearing; 16. Driven chain; 17.

[0022] Example 1 like Figures 1 to 3 As shown, the shot blasting process feeding and conveying device includes a conveyor frame, a support 7 fixed below the conveyor frame, a drive unit fixed above the conveyor frame, and multiple rollers 11 rotatably connected to the conveyor frame.

[0023] The conveyor frame comprises a first roller conveyor section 1 and a second roller conveyor section 2, which are spliced ​​together and reinforced by welding. An angle is formed between the first roller conveyor section 1 and the second roller conveyor section 2, and the angle between the second roller conveyor section and the horizontal plane is smaller than the angle between the first roller conveyor section 1 and the horizontal plane. Figure 2 and Figure 3 As shown, both the first roller conveyor 1 and the second roller conveyor 2 include two opposing frames 10 and multiple reinforcing ribs 12 welded and fixed between the frames 10. The reinforcing ribs 12 are evenly distributed at equal intervals along the length of the frames 10.

[0024] Bearings 16 are mounted on the frame 10. The spindles at both ends of the roller 11 pass through the inner rings of the bearings 16 and are interference-fitted with the inner rings of the bearings 16. The surface of the roller 11 is provided with helical protrusions 111, and the direction of rotation of the helical protrusions 111 is symmetrically arranged with respect to the midpoint of the axial direction of the roller 11. The surface of the roller 11 is also provided with a plurality of spherical protrusions 112, which are disposed between the gaps of the helical protrusions 111.

[0025] One end of the spindle of roller 11 extends out of the frame 10 through bearing 16. Two driven sprockets 15 are coaxially fixed to the spindle extending out of the frame 10. Driven chains 17 are mounted on the driven sprockets 15. Figure 2 and Figure 3 As shown, the driven chain 17 is installed as follows: a driven chain 17 is installed on the driven sprocket 15 near the bearing 16 to connect two adjacent rollers 11. Then, after skipping one roller 11, another driven chain 17 is installed on the driven sprocket 15 away from the bearing 16, and so on, so that all rollers 11 rotate synchronously through the connection of the driven chains 17. A protective shell 14 is also provided outside the frame 10. The protective shell 14 is located on the side where the sprocket is located, and both ends of the protective shell 14 are fixedly connected to the frame 10 by screws 141.

[0026] like Figure 1 As shown, the drive unit includes a support 3 welded and fixed above the frame 10, a geared motor 4 fixed above the support 3 by screws 141, a drive sprocket 5 on the main shaft of the geared motor 4, and the drive sprocket 5 is connected to the driven sprocket 15 located on the frame 10 for transmission through a drive chain 6.

[0027] like Figure 1 and Figure 2 As shown, a baffle 9 is fixed at the bottom of a section of roller conveyor 1, and a caster wheel 8 with a brake is installed at the bottom of the support 7. The structure of the caster wheel 8 is existing technology and will not be described in detail here. The method of using this device is as follows: When using the shot blasting process feeding and conveying device, first push the universal wheel 8 with brake to move the device to the side of the shot blasting machine inlet, align the end of the second-stage roller conveyor 2 with the feed inlet and step on the brake to fix it. Then start the reduction motor 4, drive the sprocket 5 to rotate and drive the drive chain 6 to move. Then, through the driven sprocket 15 connected to the drive chain 6, all roller shafts 11 rotate synchronously and smoothly. Then, the operator puts the annular blank 13 into the lower end of the first-stage roller conveyor 1 one by one. The first-stage roller conveyor 1 has a large included angle to quickly lift the blank 13 at the lower position, shortening the initial conveying path. When the blank 13 enters the second-stage roller conveyor 2, the inclination angle of the roller conveyor is greatly reduced, and the gravitational component of the annular blank 13 sliding along the lower part of the roller conveyor is also reduced, thereby reducing the downward trend of the blank 13 on the second-stage roller conveyor 2, especially when approaching the shot blasting machine inlet. The two-stage roller conveyor 2 at the inlet has a gentle angle that helps the billet 13 enter the shot blasting machine inlet more smoothly, ensuring continuous conveying. At the same time, the spiral protrusions 111 on the surface of the roller shaft 11 are symmetrically arranged with respect to the axial midpoint of the roller shaft 11. This allows the roller shaft 11 to generate a frictional force on the workpiece surface in the direction of the axial midpoint of the roller shaft 11 when it rotates. The force generated is perpendicular to the inclination direction of the roller conveyor, which can reduce the downward trend of the billet 13 caused by the inclined conveying. The spherical protrusions 112 on the roller shaft 11 change the surface roughness of the roller shaft 11, which enhances the anti-slip effect and ensures that the billet 13 can be conveyed upward smoothly. With the cooperation of the spiral protrusions 111 and the two-stage roller conveyor, the overall conveying time is reduced and the conveying efficiency is improved. After all the billets 13 have been conveyed, the reduction motor 4 can be turned off. The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A feeding and conveying device for shot blasting, characterized in that: It includes a conveyor frame, a bracket fixed below the conveyor frame, a drive unit fixed above the conveyor frame, and multiple rollers rotatably connected to the conveyor frame. The drive unit is used to drive the rollers to rotate synchronously. The conveyor frame includes a section of roller conveyor and a section of roller conveyor spliced ​​together. An angle is provided between the section of roller conveyor and the section of roller conveyor, and the angle between the section of roller conveyor and the horizontal plane is smaller than the angle between the section of roller conveyor and the horizontal plane. The surface of the roller shaft is provided with helical protrusions, and the direction of the helix of the helix protrusions is symmetrically arranged with respect to the midpoint of the axial direction of the roller shaft. The surface of the roller shaft is also provided with a plurality of spherical protrusions, which are arranged between the gaps of the helical protrusions.

2. The shot blasting process feeding and conveying device according to claim 1, characterized in that: Both the first-section roller conveyor and the second-section roller conveyor include two opposing frames and multiple reinforcing ribs welded and fixed between the frames. The reinforcing ribs are evenly distributed at equal intervals along the length of the frames.

3. The shot blasting process feeding and conveying device according to claim 2, characterized in that: The frame is equipped with bearings, and the spindles at both ends of the roller shaft are inserted into the inner ring of the bearing and are interference-fitted with the inner ring of the bearing.

4. The shot blasting process feeding and conveying device according to claim 3, characterized in that: One end of the spindle of the roller extends out of the frame through the bearing. Two driven sprockets are coaxially fixed on the spindle extending out of the frame. Driven chains are installed on the driven sprockets. All rollers rotate synchronously through the connection of the driven chains.

5. The shot blasting process feeding and conveying device according to claim 4, characterized in that: The frame is also equipped with a protective shell, the two ends of which are fixedly connected to the frame by screws, and the protective shell is located on the side where the sprocket is located.

6. The shot blasting process feeding and conveying device according to claim 5, characterized in that: A baffle is fixed to the bottom of the section of the roller conveyor; casters are installed at the bottom of the support.

7. The shot blasting process feeding and conveying device according to claim 1, characterized in that: The drive unit includes a support fixed above the frame and a geared motor fixed above the support. The main shaft of the geared motor is equipped with a drive sprocket, which is connected to a driven sprocket located on the frame via a drive chain.

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