An automatic sand blasting and loading and unloading device and sand blasting method for cylindrical bars

Abstract

An automatic sandblasting and loading / unloading device and method for cylindrical bars includes two opposing guide rails, at least two support devices located at both ends of one guide rail and slidably connected to it, a locking device located on the guide rail on the side of the support devices and slidably connected to it, used to clamp or release the bar, and in the clamped state, drive the bar to rotate around its own axis; a lifting device located on the guide rail on the side of the support devices, used to lift the bar to a coaxial and centered position with the locking device; a sandblasting device movably connected to the other guide rail; a pushing mechanism located on one side of the lifting device, used to push the bar axially to the support devices and pass it through the locking device, or to pull the bar axially out of the locking device. The automatic sandblasting and loading / unloading device and method for cylindrical bars provided by this invention can automatically adapt to bars of different sizes, achieving automatic centering operation and fully automatic, dead-angle-free sandblasting operation.

Description

Technical Field

[0001] This invention relates to the field of sandblasting equipment technology, and in particular to an automatic sandblasting and loading / unloading device and method for cylindrical bars. Background Technology

[0002] Sandblasting is a widely used metal surface treatment process. Its basic principle is to use compressed air or centrifugal force to accelerate abrasives (such as quartz sand, steel shot, glass beads, etc.) to a high speed and spray them onto the surface of the workpiece. Through the impact and cutting action of the abrasive particles on the metal surface, the purpose of rust removal, oxide scale removal, surface roughening or strengthening can be achieved.

[0003] Cylindrical bars and shaft parts, due to their regular geometric features and wide range of applications, have become one of the main targets of sandblasting operations. In existing technologies, when sandblasting cylindrical bars and shaft parts of different diameters, the workpiece must first be centered and fixed using a special fixture, and then fed into the sandblasting area by a conveying mechanism, where its outer circumference is sandblasted by a fixed or oscillating nozzle. However, this method has significant drawbacks: firstly, because the fixture itself needs to apply clamping force to the workpiece, its contact area inevitably obstructs the workpiece surface, forming sandblasting "dead zones," resulting in localized areas that cannot be effectively treated, affecting the overall surface quality consistency; secondly, if the workpiece is not precisely centered during loading, or experiences a slight shift during sandblasting, it can easily cause uneven sandblasting coverage, localized missed areas, or over-sandblasting, especially when processing shaft parts with high precision or high surface quality requirements, these defects are particularly prominent.

[0004] Meanwhile, the feeding and positioning process heavily relies on manual intervention for centering, lacking the ability to automatically identify and adaptively center bar stock of different diameters. This not only results in low efficiency but also makes it difficult to guarantee repeatability and positioning accuracy, severely restricting the automation and intelligence level of the sandblasting process. Therefore, accurately controlling the position of cylindrical parts and the feeding process, rationally arranging sandblasting nozzles, and eliminating missed areas are crucial to ensuring the quality of sandblasting treatment for cylindrical parts. Summary of the Invention

[0005] This invention provides an automatic sandblasting and loading / unloading device and method for cylindrical bars, addressing at least one of the aforementioned technical problems. The automatic sandblasting and loading / unloading device and method for cylindrical bars provided by this invention can automatically adapt to bars of different sizes, achieving automatic centering operation and ensuring that the bars do not shift during sandblasting. This enables fully automatic, dead-angle-free sandblasting of the bars, ensuring sandblasting quality. An automatic sandblasting and loading / unloading device for cylindrical bars includes: Two guide rails set opposite each other, At least two support devices are disposed at both ends of one of the guide rails and are slidably connected to the guide rails for supporting the bar stock, and, A locking device is provided on the guide rail located on the side of the support device and is slidably connected to the guide rail. It is used to clamp or release the bar and, when clamped, drive the bar to rotate around its own axis. A lifting device, which is mounted on the guide rail located on the side of the support device, is used to lift the bar stock to a position coaxial and aligned with the locking device. A sandblasting device, which is movably connected to another of the guide rails, is used to sandblast the outer surface of the bar stock. The pushing mechanism, located on one side of the lifting device, is configured to push the bar stock axially to the support device and pass it through the locking device, or to pull the bar stock axially out of the locking device.

[0006] According to one aspect of the invention, the lifting device includes: A lifting drive unit is mounted on a frame and has a lifting rod at its output end; A V-shaped support is provided at the top of the lifting rod to support the bar stock; A detection sensor is installed at the bottom inside the V-shaped support to detect the shortest distance X between the lowest point of the bar and the bottom inside the V-shaped support.

[0007] According to one aspect of the invention, the V-shaped support has two symmetrically arranged inclined support surfaces forming an angle θ between them, and the shortest distance X and the angle θ are used to calculate the radius of the bar stock. Based on the calculated radius of the bar stock Determine whether the bar stock is coaxial and aligned with the locking device.

[0008] According to one aspect of the invention, the support device includes: A support base, which is slidably connected to the guide rail; A height adjustment mechanism is mounted on a support base; and, A bar support, which is mounted on the height adjustment mechanism, is used to support the bar stock; The height adjustment mechanism is configured to adjust the height of the bar support based on the shortest distance X and the included angle θ.

[0009] According to one aspect of the invention, two locking devices are provided, and the two locking devices are disposed opposite to each other on the guide rail. The locking devices include: A locking base is slidably connected to the guide rail; A rotating component, which is rotatably connected to the locking base; A locking mechanism, which is disposed on the rotating part, is used to clamp and release the bar stock; A rotary drive mechanism is fixedly mounted on the locking base and connected to the rotating component, used to drive the rotating component to rotate around its axis.

[0010] According to one aspect of the invention, a locking device moving mechanism is further included, which is mounted on the locking base and is used to drive the locking device to slide along the guide rail.

[0011] According to one aspect of the invention, the locking device moving mechanism includes: A movable drive mechanism is mounted on the locking base; A movable drive gear is disposed at the output end of the movable drive mechanism and rotates under the drive of the movable drive mechanism; The driven rack is mounted on the frame and meshes with the moving drive gear.

[0012] According to one aspect of the present invention, the feeding mechanism includes: The material pusher drive device is mounted on the frame; A telescopic rod, one end of which is connected to the output end of the pusher drive device; A pusher plate is disposed at the other end of the telescopic rod; A clamping mechanism is disposed on the pusher plate and configured to clamp the bar stock, and to pull the bar stock axially out of the locking device when the pusher drive device drives the telescopic rod to retract.

[0013] According to one aspect of the invention, the sandblasting apparatus includes: A sandblasting base, which is slidably connected to the guide rail; A sandblasting height adjustment device is mounted on the sandblasting base; The nozzle is mounted on the sandblasting height adjustment device.

[0014] According to one aspect of the present invention, a plurality of sandblasting devices are provided and distributed along the extension direction of the guide rail; wherein, the sandblasting devices located at both ends of the guide rail further include nozzle mounting seats and side sandblasting quality sensors, the nozzle mounting seats are mounted on the sandblasting height adjustment device, and the nozzles and / or side sandblasting quality sensors are provided on the nozzle mounting seats, the side sandblasting quality sensors being used to detect the sandblasting quality of the corresponding end face of the bar stock.

[0015] According to one aspect of the invention, a sandblasting quality inspection device is also included, which is disposed on the guide rail and located on one side of the sandblasting device, for inspecting the surface sandblasting quality of the bar stock after sandblasting treatment.

[0016] According to one aspect of the present invention, a cleaning device is provided on one side of the sandblasting quality inspection device, the cleaning device being used to clean the surface of the bar stock after sandblasting.

[0017] A sandblasting method for cylindrical bars includes the following steps: Load the bar stock onto the lifting device; The lifting device lifts the bar stock to a position coaxial and aligned with the locking device; Adjust the height of the bar support to match the position of the bar's axis; The bar is pushed along the first direction by the pushing mechanism, so that the bar is mounted on the support device and continues to pass through the locking device located on the same side; when the bar passes through the locking device to a preset distance, the locking device clamps and fixes the bar. The locking device moving mechanism drives the locking device and the supporting device to move synchronously along the first direction until they reach a preset position; The locking device alternately clamps different axial parts of the bar and drives it to rotate around its own axis. At the same time, the moving mechanism of the locking device drives the bar to move continuously along the first direction, and the bar is sandblasted segment by segment during the movement. The locking device alternately clamps different axial parts of the bar and drives it to rotate around its own axis. At the same time, the moving mechanism of the locking device drives the bar to move continuously along the second direction, and the bar after sandblasting is inspected during the movement.

[0018] Compared with existing technologies, this invention has the following advantages: By setting up a lifting device, the central axis of the bar stock can be detected, and the bar stock can be lifted to a position coaxial with the locking device, so that the pushing mechanism can push the bar stock into the locking device along the axis. At the same time, the height of the bar stock holder can be adjusted by the support device to adapt to bars of different diameters, ensuring that the bar stock and the locking device move coaxially, avoiding deviation or tilting of the bar stock during movement, thereby preventing uneven sandblasting. By having two locking devices alternately clamp different axial parts of the bar stock and drive it to rotate around its own axis, and simultaneously, driven by the moving mechanism of the locking device, the bar stock moves continuously along the guide rail, thus allowing the bar stock to complete segmented sandblasting and sandblasting quality inspection during movement, realizing fully automatic, dead-angle-free sandblasting operation and sandblasting quality inspection of the bar stock, with a high degree of automation and no need for manual intervention. Through the coordinated operation of the lifting device, pushing mechanism, supporting device, guide rail, and locking device, this device can adapt to bars of different diameters and lengths, has a wide range of applications, and can realize automated dynamic adjustment and sandblasting operations. The automatic sandblasting and loading / unloading device for cylindrical bars provided by the inventor can automatically adapt to bars of different sizes, achieve automatic centering operations, and ensure that the bars do not shift during sandblasting. This achieves fully automatic, dead-angle-free sandblasting operations, ensuring sandblasting quality and a high degree of automation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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.

[0020] Figure 1 This is a front view of the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention; Figure 2 This is a front view of a portion of the structure of the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention. Figure 3 This is a three-dimensional structural diagram of the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention; Figure 4 This is a three-dimensional structural diagram of the pushing mechanism of the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention. Figure 5 This is a schematic diagram of the axial detection triangle relationship of the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention; Figure 6This is a three-dimensional structural diagram of the lifting device of the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention. Figure 7 This is a second-view perspective three-dimensional structural diagram of the lifting device of the automatic sandblasting and loading / unloading device for cylindrical bars of the present invention. Figure 8 This is a three-dimensional structural diagram of the locking device and the locking device moving mechanism of the automatic sandblasting and loading / unloading device for cylindrical bars of the present invention. Figure 9 This is a partial structural schematic diagram of the locking device of the automatic sandblasting and loading / unloading device for cylindrical bars of the present invention. Figure 10 This is a three-dimensional structural diagram of the sandblasting devices at both ends of the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention. Figure 11 This is a three-dimensional structural diagram of the support device for the automatic sandblasting and loading / unloading device for cylindrical bars according to the present invention. Figure 12 This is a schematic diagram of the state in which the right end of the cylindrical bar is clamped in the automatic sandblasting and loading / unloading device of the present invention. Figure 13 This is a schematic diagram of the automatic sandblasting and loading / unloading device for cylindrical bars of the present invention, showing the bar mid-section being clamped. Figure 14 This is a schematic diagram of the left end of the cylindrical bar stock being clamped in the automatic sandblasting and loading / unloading device of the present invention. Reference numerals: 1. Frame; 2. Guide rail; 3. Pushing mechanism; 31. Pushing drive device; 32. Telescopic rod; 33. Pushing plate; 34. Gripper drive mechanism; 35. Gripper; 4. Lifting device; 41. Lifting drive device; 42. Lifting rod; 43. V-shaped support; 44. Detection sensor; 5. Support device; 51. Support base; 52. Height adjustment mechanism; 54. Bar support; 6. Locking device; 61. Locking base; 62. Rotary drive mechanism; 621. Rotary motor; 622. Output shaft; 623. Drive gear; 624. From... 63. Rotating component; 64. Locking mechanism; 7. Sandblasting device; 71. Sandblasting base; 72. Sandblasting height adjustment device; 73. Nozzle; 75. Nozzle mounting base; 74. Side sandblasting quality sensor; 8. Cleaning device; 81. Cleaning base; 82. Cleaning nozzle; 83. Cleaning telescopic mechanism; 9. Locking device moving mechanism; 91. Moving drive mechanism; 92. Moving output shaft; 93. Moving drive gear; 94. Driven rack; 10. Sandblasting quality detection device; 100. Bar stock; R, bar stock radius; X, shortest distance; θ, included angle. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., appearing in the description of this invention are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this invention does not imply that the components are required to be absolutely horizontal or suspended, but rather that they may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1 An automatic sandblasting and loading / unloading device for cylindrical bars is disclosed. It is primarily suitable for automatically sandblasting cylindrical bars of different diameters and lengths, and can automatically load and unload the bars, completing automatic sliding sandblasting and sandblasting quality inspection. Figures 1 to 11 As shown, it includes a frame 1, two opposing guide rails 2, at least two support devices 5, a locking device 6, a lifting device 4, a sandblasting device 7, and a pushing mechanism 3. The frame 1 can be configured as needed, and the specific structure is not limited here. Considering the serious pollution and harm to the human body during sandblasting, the entire frame can be formed by combining the box body with the wall, or the box body can be connected to another frame structure to form an integral frame. The two support devices 5, the locking device 6, and the sandblasting device 7 are arranged inside the box body. A feeding port is provided on the box body for feeding the bar stock 100. Specifically, the two guide rails 2 are arranged vertically opposite each other on the frame 1 (box body). On the upper first guide rail, multiple sandblasting devices 7 are arranged along the extension direction of the first guide rail. On the lower second guide rail, support devices 5 and locking devices 6 are arranged along the extension direction of the second guide rail. Of course, in other embodiments, the two guide rails can also be arranged opposite each other front-to-back or left-to-right. At least two support devices 5 are disposed at both ends of one of the guide rails 2 and are slidably connected to the guide rail 2 to support the bar stock 100. That is, support devices 5 are provided on both sides of the locking device 6 to effectively support the bar stock 100 and prevent the bar stock from shifting during movement. The locking device 6 is disposed on the guide rail 2 located on the side where the support device 5 is located, i.e., on the second guide rail, and is slidably connected to the guide rail 2 to clamp or release the bar stock 100, and in the clamped state, to drive the bar stock 100 to rotate around its own axis; the lifting device 4 is disposed on the guide rail 2 located on the side where the support device 5 is located to lift the bar stock 100 to a position coaxial and aligned with the locking device 6. The sandblasting device 7 is movably connected to another guide rail 2 and is used to sandblast the outer peripheral surface of the bar stock 100; the pushing mechanism 3 is located on one side of the lifting device 4 and is configured to push the bar stock 100 axially to the support device 5 and pass it into the locking device 6, or to pull the bar stock 100 axially out of the locking device 6.

[0028] In one implementation, such as Figure 6 and Figure 7As shown, the lifting device 4 is mounted on the frame structure on one side of the outer casing to facilitate the loading of the bar stock 100. The lifting device 4 includes a lifting drive device 41, a V-shaped support 43, and a detection sensor 44. The lifting drive device 41 is mounted on the frame 1 or the floor, and its output end is equipped with a lifting rod 42. The lifting drive device 41 is a power mechanism used to drive the lifting rod 42 to extend and retract, thereby causing the V-shaped support 43 and the bar stock 100 to move synchronously. The lifting drive device 41 can use an electric push rod, a cylinder, a hydraulic cylinder, etc., as its power source. The V-shaped support 43 is located at the top of the lifting rod 42 and is used to support the bar stock 100. The detection sensor 44 is located at the bottom inside the V-shaped support 43 and is used to detect the shortest distance X between the lowest point of the bar stock 100 and the bottom inside the V-shaped support 43. The detection sensor 44 is a sensor with distance detection capability, such as an ultrasonic radar sensor, a lidar sensor, or a non-contact displacement sensor.

[0029] In one embodiment, the V-shaped support 43 has two symmetrically arranged inclined support surfaces, forming an angle θ between the two support surfaces. The shortest distance X and the angle θ are used to calculate the radius of the bar stock 100. Based on the calculated radius of bar 100 The process involves determining whether the bar 100 is coaxially aligned with the locking device 6. Specifically, the center position of the bar is calculated using the shortest distance X and the included angle θ, facilitating subsequent alignment with the locking device 6. The derivation logic of the calculation formula is as follows: The bar rests naturally on the V-shaped support 43. At this point, the support surface on either side of the V-shaped support 43 is perpendicular to the radius R of the bar. The radius R of the bar, the sum of the radius R and the shortest distance X, will correspond to the length of one leg and the hypotenuse of a right triangle, respectively. Based on trigonometric functions... The radius of the bar can be determined. And then based on the radius Determine the center position. Based on the center position, the lifting drive device 41 starts to adjust the height of the lifting rod 42, thereby adjusting the position of the bar 100 so that its axis coincides with the clamping center axis of the locking device 6.

[0030] In other preferred embodiments, to ensure that the bar stock does not slip due to a shift in the center of gravity during lifting, two or more lifting devices 4 can be arranged, or a wide V-shaped support 43 can be provided along the extension direction of the bar stock 100. More preferably, a protective layer can be provided on the two support surfaces to protect the bar stock from damage. This protective layer can be made of silicone or rubber.

[0031] In one implementation, such as Figure 2 He Ru Figure 11As shown, multiple support devices 5 can be provided, and their positions can be set in the middle and / or at both ends. Preferably, one support device 5 is provided at each end. The support device 5 includes a support base 51, a height adjustment mechanism 52, and a bar support 54. The support base 51 is slidably connected to the guide rail 2. The height adjustment mechanism 52 is provided on the support base 51. The specific structure of the height adjustment mechanism 52 is not limited, as long as it can adjust the height of the bar support 54. It can be an electric push rod, hydraulic cylinder, starting cylinder, etc., and its drive stroke and adjustment accuracy need to meet the requirements. The bar support 54 is provided on the height adjustment mechanism 52 to support the bar 100. The specific structure of the bar support 54 is not limited, and it can be as follows: Figure 11 The semi-circular support plate shown can also be a V-shaped plate. Preferably, a protective layer is provided on the contact surface between the bar support 54 and the bar 100 to prevent scratches on the bar surface. This protective layer can be silicone, rubber, etc. The height adjustment mechanism 52 adjusts the height of the bar support 54 according to the center position and radius R of the bar 100. Specifically, the height adjustment mechanism 52 adjusts the height of the bar support 54 according to the center height determined by the lifting device 4, so that the bar 100 can be pushed in parallel without positional deviation, thereby ensuring the subsequent sandblasting quality. At the same time, it allows the support device 5 to adapt to bars 100 of different diameters.

[0032] In one implementation, such as Figure 3 , Figure 8 and Figure 9 As shown, two locking devices 6 are arranged opposite each other on the guide rail 2. The two locking devices 6 alternately clamp the bar stock 100, so that the bar stock is sandblasted without dead angles during the sandblasting process. The locking device 6 includes a locking base 61, a rotating part 63, a locking mechanism 64, and a rotating drive mechanism 62. The locking base 61 is slidably connected to the guide rail 2; preferably, as shown in the figure. Figure 8As shown, the locking base 61 adopts an "L"-shaped structure, with its bottom end slidably connected to the guide rail 2. The vertical structure is used to install the rotating component 63. The rotating component 63 is rotatably connected to the locking base 61. The rotating component 63 is a cylindrical structure with a through hole inside for the bar stock 100 to pass through. Preferably, a bearing is provided between the rotating component 63 and the locking base 61 to facilitate the rotation of the rotating component 63. The locking mechanism 64 is provided on the rotating component 63 and is used to clamp and release the bar stock 100. The specific structure of the locking mechanism 64 is not limited, as long as it can lock and clamp the bar stock 100. It can be a three-jaw chuck, a hydraulic clamping device, a pneumatic clamping device (using a cylinder to push the clamping element (such as a gripper)) to achieve automatic clamping. Preferably, the gripper is provided with an elastic buffer layer (such as a rubber pad, silicone pad, etc.) to enhance the clamping stability of the workpiece and avoid surface damage. A rotary drive mechanism 62 is fixedly mounted on the locking base 61 and connected to the rotating component 63, used to drive the rotating component 63 to rotate around its axis. The rotary drive mechanism 62 includes a rotary motor 621, an output shaft 622, a driving gear 623, and a driven gear 624. The rotary motor 621 is a power source; in other embodiments, other power mechanisms, such as a motor, can also be used, and its speed can be adjusted as needed. The rotary motor 621 is mounted on the locking base 61, and its output end has an output shaft 622. The driving gear 623 is mounted on the output shaft 622, and the driven gear 624 is mounted on the rotating component 63. The connection method between the driven gear 624 and the rotating component 63 is not limited; it can be integrally formed, welded, or otherwise. The driving gear 623 and the driven gear 624 are meshed together. The rotary motor 621 drives the driving gear 623 to rotate, thereby driving the meshing driven gear 624 to rotate, thus achieving synchronous rotation of the rotating component 63. In other embodiments, the rotary drive mechanism 62 can also be connected to the rotating component 63 via a power source through a belt, chain, or other means to drive the rotating component 63 to rotate. When the pushing mechanism 3 pushes the bar 100 toward the locking device 6, the locking mechanism 64 is in an open state to ensure that the pushing mechanism 3 can smoothly push the bar 100 through the locking device 6; after the bar 100 is pushed into place, the locking mechanism 64 clamps it, and then the rotary drive mechanism 62 drives the rotating component 63 to rotate, thereby driving the bar 100 to rotate synchronously. Preferably, the two locking devices 6 can be arranged symmetrically or in mirror image. The locking device 6 is equipped with a bar detection device. When the bar detection device detects the bar 100 and after a preset time, the locking mechanism 64 locks the bar 100. Of course, in other embodiments, locking can also be controlled by manual judgment.

[0033] In one implementation, such as Figure 3 and Figure 8As shown, it also includes a locking device moving mechanism 9, which is mounted on the locking base 61. Each locking base 61 is provided with a locking device moving mechanism 9 for driving the locking device 6 to slide along the guide rail 2. The structure of the locking device moving mechanism 9 is not limited, as long as it can drive the locking device to slide along the guide rail 2. The locking device moving mechanism 9 can adopt a chain and sprocket drive, gear drive, or other structure. There are two locking device moving mechanisms 9, which are respectively set on two locking bases 61.

[0034] In one embodiment, the locking device moving mechanism 9 includes a moving drive mechanism 91, a moving drive gear 93, and a driven rack 94. The moving drive mechanism 91 is a power source, which can be a motor, electric motor, etc., and its speed can be adjusted as needed. The required speed can be adjusted through a control system and manual settings. The moving drive mechanism 91 is fixedly installed on the locking base 61. The output end of the moving drive mechanism 91 is connected to the moving drive gear 93 through a moving output shaft 92 and rotates under the drive of the moving drive mechanism 91. The driven rack 94 is fixedly installed on the frame 1 and meshes with the moving drive gear 93. The moving drive mechanism 91 drives the moving drive gear 93 to rotate, thereby pushing the locking base 61 to slide along the guide rail 2. Preferably, the support base 51 is connected to the locking base 61 on the same side, which can be connected by a connecting rod, screw, etc., so that when the locking device moving mechanism 9 drives the locking device 6 to move, it can drive the support device 5 on the same side to move together.

[0035] In one implementation, such as Figure 1 and Figure 4As shown, the pushing mechanism 3 is installed on one side of the outer casing to facilitate the pushing of the bar stock 100 outside the casing into the casing during loading. The pushing mechanism 3 includes a pushing drive device 31, a telescopic rod 32, a pushing plate 33, and a clamping mechanism. The pushing drive device 31 is a power source, which can be an electric push rod, hydraulic cylinder, pneumatic cylinder, etc. The pushing drive device 31 is fixedly installed on the frame 1. The output end of the pushing drive device 31 is provided with the telescopic rod 32, which can extend and retract under the drive of the pushing drive device 31. The other end of the telescopic rod 32 is provided with the pushing plate 33, which contacts the end face of the bar stock 100 during pushing and pushes the bar stock to move under the drive of the pushing drive device 31. A clamping mechanism is provided on the outer periphery of the pusher plate 33. The clamping mechanism is configured to clamp the bar stock 100 and, when the pusher drive device 31 drives the telescopic rod 32 to retract, pull the bar stock 100 axially out of the locking device 6, so that the bar stock 100 is pulled out of the box, facilitating the unloading of the sandblasted bar stock 100. The specific structure of the clamping mechanism is not limited, as long as it can clamp and pull the bar stock 100. It can be a pneumatic gripper, a hydraulic gripper, an electric gripper, etc. Specifically, the pusher plate 33 is provided with a gripper drive mechanism 34, and the output end of the gripper drive mechanism 34 is provided with a gripper 35. The gripper drive mechanism 34 is a power source that drives the gripper 35 to effectively clamp the bar stock 100. Preferably, an elastic buffer layer (such as a silicone pad, rubber pad, etc.) is provided on the contact surface between the gripper 35 and the bar stock 100 to enhance the clamping stability of the workpiece and avoid surface damage.

[0036] In one implementation, such as Figure 3 and Figure 10 As shown, the sandblasting device 7 is mounted on the upper guide rail 2. The sandblasting device 7 includes a sandblasting base 71, a sandblasting height adjustment device 72, and a nozzle 73. The sandblasting base 71 is slidably connected to the guide rail 2; the operator can adjust its position according to the length of the bar stock. The sandblasting height adjustment device 72 is mounted on the sandblasting base 71 and can adjust the height of the nozzle 73 relative to the bar stock 100 to accommodate sandblasting of bars 100 with different diameters. The specific structure of the sandblasting height adjustment device 72 is not limited, as long as it can adjust the height of the nozzle 73 relative to the bar stock 100; it can be an electric push rod, a hydraulic cylinder, a pneumatic cylinder, etc. The nozzle 73 is fixedly mounted on the sandblasting height adjustment device 72 and is used to spray abrasive.

[0037] In one embodiment, multiple sandblasting devices 7 are provided, distributed along the extension direction of the guide rail 2. Preferably, two types of sandblasting devices 7 are provided: one for sandblasting the circumferential surface of the bar stock 100, and the other for sandblasting the end faces of the bar stock 100. That is, one sandblasting device 7 is provided at each of the two end faces of the bar stock 100, and at least one sandblasting device 7 is provided at the middle position. The sandblasting devices 7 located at both ends of the guide rail 2 are used to sandblast the end faces of the bar stock. The sandblasting devices 7 at both ends also include nozzle mounting seats 75 and side sandblasting quality sensors 74. The nozzle mounting seats 75 are mounted on the sandblasting height adjustment device 72. The nozzles 73 and / or the side sandblasting quality sensors 74 are provided on the nozzle mounting seats 75. The side sandblasting quality sensors 74 are used to detect the sandblasting quality of the corresponding end face of the bar stock 100. Preferably, a detection device is provided on the nozzle 73 to detect whether there is a bar stock 100, so as to avoid the nozzle 73 sandblasting when there is no bar stock, which would cause material waste and safety risks. Of course, in other embodiments, all sandblasting devices 7 may be configured with the same structure, and a sandblasting quality detection device 10 may be configured on one side of the sandblasting device 7 at the end face of the bar stock 100 for sandblasting quality detection of the end face of the bar stock 100.

[0038] In one implementation, such as Figure 3 As shown, it also includes a sandblasting quality inspection device 10, which is mounted on the guide rail 2 and located on one side of the sandblasting device 7, for inspecting the sandblasting quality of the surface of the bar stock 100 after sandblasting treatment. Preferably, it is located on one side of the sandblasting device 7 in the middle for inspecting the sandblasting quality of the outer peripheral surface of the bar stock 100 after sandblasting treatment, and the sandblasting quality inspection devices 10 located on both sides or the side sandblasting quality sensors 74 for inspecting the sandblasting quality of the corresponding end faces of the bar stock 100.

[0039] In one embodiment, the structure of the sandblasting quality detection device 10 and / or the side sandblasting quality sensor 74 is not limited, as long as it can detect the sandblasting quality of the surface of the bar stock 100. It can be one or more combinations of a vision sensor, a surface roughness sensor or a color recognition sensor.

[0040] In one embodiment, the sandblasting quality inspection device 10 includes an inspection mounting base slidably connected to the guide rail 2. An inspection height adjustment device is provided on the inspection mounting base, and an inspection sensor is mounted on the inspection height adjustment device. The inspection height adjustment device is used to adjust the relative height of the inspection sensor to accommodate bars 100 of different diameters. The specific structure of the inspection height adjustment device is not limited and can be an electric push rod, hydraulic cylinder, pneumatic cylinder, etc.

[0041] In one embodiment, a cleaning device 8 is provided on one side of the sandblasting quality inspection device 10. The cleaning device 8 is used to clean the surface of the sandblasted bar stock 100 to remove residual abrasive and attached impurities, thus preventing false alarms from the sandblasting quality inspection device 10 during the inspection process. The specific structure of the cleaning device 8 is not limited, as long as it can remove residual abrasive and attached impurities from the surface of the bar stock. It can be one of a rotating brush assembly, a compressed air blowing mechanism, an electrostatic adsorption unit, or an ultrasonic cleaning module. Preferably, the cleaning device 8 is provided with a bar stock arrival detection device to detect whether the bar stock has reached below the cleaning device 8. The bar stock arrival detection device can be a photoelectric sensor, etc.

[0042] In one embodiment, the cleaning device 8 includes a cleaning seat 81, a cleaning telescopic mechanism 83, and a cleaning nozzle 82. The cleaning seat 81 is mounted on and slidably connected to the guide rail 2 above it. The cleaning telescopic mechanism 83 is mounted on the cleaning seat 81, and the cleaning nozzle 82 is mounted on the cleaning telescopic mechanism 83. The cleaning telescopic mechanism 83 drives the cleaning nozzle 82 to extend and retract to adjust the height of the cleaning nozzle 82. The structure of the cleaning telescopic mechanism 83 is not limited and can be an electric push rod, a hydraulic cylinder, a pneumatic cylinder, etc.

[0043] In one embodiment, a control system is also included. The control system is connected to one or more of the following: a pusher drive device 31, a lifting drive device 41, a detection sensor 44, a height adjustment mechanism 52, a rotation drive mechanism 62, a locking mechanism 64, a sandblasting device 7, a cleaning device 8, a moving drive mechanism 91, or a sandblasting quality detection device. The control system is used to receive sensor signals and output control commands to achieve coordinated control of each actuator.

[0044] Example 2 The automatic sandblasting method for cylindrical bar stock using the automatic sandblasting and loading / unloading device of Example 1 includes the following steps: S1: Load the bar stock onto the lifting device; The operator can place the bar stock 100 on the lifting device 4 in any way. Under the action of gravity, the bar stock 100 will automatically stop at a certain position of the V-shaped support 43 according to its different diameter.

[0045] S2: The lifting device lifts the bar stock to a position coaxial and aligned with the locking device; After the bar stock 100 is placed on the V-shaped support 43, the lifting drive device 41 drives the lifting rod 42 to extend and retract, adjusting the height of the bar stock 100. Synchronously, as... Figure 5As shown, the detection sensor 44 at the bottom of the V-shaped support 43 detects the shortest distance X from the lowest point of the outer circumference of the bar 100 to the bottom of the V-shaped support 43, and calculates the center position of the bar 100 by combining the angle θ between the two support surfaces of the V-shaped support 43, so as to facilitate alignment with the locking device 6.

[0046] The specific calculation method is as follows: The bar stock 100 rests naturally on the V-shaped support 43. At this time, either of the two supporting surfaces of the V-shaped support 43 is perpendicular to the radius R corresponding to the bar stock 100. That is, as shown... Figure 5 As shown, the radius R of bar 100, the edge of any supporting surface, and the sum of the bar radius R and the shortest distance X form a triangle. Based on trigonometric relationships, the formula for calculating the bar radius R is: Based on this calculation formula, the radius value R of the bar can be calculated, and the center position is determined based on the bar radius and the shortest distance X. The control system controls the lifting drive device 41 to start and adjust the height of the V-shaped support 43 according to the center position of the bar and the installation height of the locking device 6, so that the axis of the bar 100 coincides with the clamping center axis of the locking device 6.

[0047] S3: Adjust the height of the bar support on the support device to match the position of the bar axis; The control system adjusts the height of the bar support 54 by controlling the height adjustment mechanism 52 according to the center position, so that the central axis of the bar supported by the bar support 54 coincides with the axis of the bar on the lifting device 4.

[0048] S4: The bar is pushed axially by the pushing mechanism, so that the bar is placed on the support device and continues to pass through the locking device on the same side; when the bar passes through the locking device to a preset distance, the locking device clamps and fixes the bar. The control system drives the pushing mechanism 3 to push the bar stock 100 from the feed port into the box and onto the left support device 5. The pushing mechanism 3 continues to push the bar stock 100 so that the right end of the bar stock 100 passes through the left locking device 6. The bar stock detection device on the left locking device 6 detects the bar stock for a certain period of time. That is, when the bar stock 100 extends out of the left locking device 6 to reach a preset distance, the locking mechanism 64 clamps and fixes the bar stock 100; at the same time, the pushing mechanism 3 retracts.

[0049] S5: The locking device moving mechanism drives the locking device and the support device to move synchronously along the first direction until they reach the preset position; The control system activates the moving drive mechanism 91, causing it to rotate and drive the moving drive gear 93 to rotate as well. This, in turn, moves the locking device 6 and the right-side support device 5 to the right along a first direction to a preset position. The first direction is the direction of movement along the axial direction of the bar stock 100, i.e., as shown in the image. Figure 12As shown, it faces to the right in the diagram. The preset position is the position below the middle sandblasting device 7 where the right side of the bar 100 has moved (e.g., ...). Figure 11 (The location shown).

[0050] S6: With the cooperation of the support device, the locking device and the locking device moving mechanism, the locking device alternately clamps different axial parts of the bar and drives it to rotate around its own axis. At the same time, the locking device moving mechanism drives the bar to move continuously along the first direction, and the sandblasting device sandblasts the bar segment by segment during the movement. S61: The locking device drives the bar to rotate, and the sandblasting device sandblasts the outer circumferential surface of one end of the bar and the opposite end face. The control system starts the rotary motor 621, which drives the drive gear 623 to rotate, which in turn drives the driven gear 624, causing the bar stock 100 to rotate synchronously. The control system also starts the left and middle sandblasting devices 7. The sandblasting height adjustment device 72 adjusts the height of the nozzle 73 according to the center position and radius R of the bar stock. The nozzle 73 sandblasts the outer peripheral surface of the right side and the left end face of the bar stock. After the left end face of the bar stock is sandblasted, the nozzle mounting base 75 is rotated so that the side sandblasting quality sensor 74 detects the sandblasting quality of the left end face and transmits the detection result to the control system. The control system determines whether the sandblasting quality of the left end face meets the standard. If it does not meet the standard, the nozzle 73 continues to sandblast the left end face of the bar stock until it meets the standard. The left sandblasting height adjustment device 72 then retracts the nozzle 73.

[0051] S62: The locking device moving mechanism drives the locking device and the supporting device to move synchronously at low speed along the first direction; the sandblasting device performs sandblasting treatment on the outer circumferential surface of one end of the bar.

[0052] The moving drive mechanism 91 drives the locking device 6 and the left-side support device 5 to continue moving forward at a low speed, while the rotating drive mechanism 62 drives the rotating component 63 to rotate synchronously, thereby causing the bar stock 100 to rotate. The sandblasting device 7 continuously sandblasts the outer circumferential surface of the right end of the bar stock.

[0053] S63: Another locking device clamps the other end of the bar stock and drives the bar stock to continue moving at a low speed along the first direction under the drive of the locking device moving device; the sandblasting device performs sandblasting treatment on the outer circumferential surface of the middle part of the bar stock.

[0054] During the continuous rightward movement of the bar stock 100, the right end of the bar stock 100 is inserted into the right-side locking device 6 (before insertion, the locking mechanism 64 is in the open state). The right-side locking device 6 locks the right end of the bar stock 100, while the left-side locking device 6 releases the bar stock 100. The right-side moving drive mechanism 91 is activated, driving the right-side locking device 6 to continue moving the bar stock 100 to the right at a low speed until the leftmost end of the bar stock 100 leaves the left-side support device 5. At this point, the left-side locking device 6 locks, and the right-side locking device 6 releases the bar stock 100. Driven by the locking device moving mechanism 9, the right-side locking device 6 continues to move the bar stock to the right until the right end of the bar stock reaches the right-side support device 5. During the rightward movement of the bar stock 100, the sandblasting device 7 continuously sandblasts the outer peripheral surface of the middle part of the bar stock. When the right end of the bar stock 100 moves to the right support device 5, the outer circumferential surface of the middle part of the bar stock 100 has been sandblasted, and the right half of the bar stock 100 has completely entered the right locking device 6.

[0055] S64: Another locking device and the same-side support device drive the bar to continue moving at a low speed along the first direction under the drive of the locking moving device, and the sandblasting device performs sandblasting treatment on the outer circumferential surface of the other end of the bar and the end face on the opposite side. The left locking device 6 releases the bar stock 100, while the right locking device 6 locks the bar stock 100, and together with the right supporting device 5, they continue to move to the right at a low speed under the drive of the locking device moving mechanism 9. During the rightward movement of the bar stock 100, the sandblasting device 7 continuously sandblasts the outer peripheral surface on the left side and the end face on the right side of the bar stock 100. The sandblasting operation procedure for the circumferential surface and the right end face of the bar stock 100 is performed as described above, and will not be repeated here.

[0056] It should be noted that during the segmented sandblasting process of the locking device 6 alternately clamping the bar stock 100, in order to achieve sandblasting of the bar stock 100 without dead angles, it is necessary to ensure that the sandblasting device 7 effectively sandblasts all areas of the bar stock surface within a unit time. This requires the bar stock 100 to rotate around its axis while moving in the first direction, so that the sandblasting trajectory forms a continuous and non-overlapping spiral path on the surface of the bar stock 100. The pitch P of this spiral path (i.e., the distance traveled axially per revolution) is: the moving speed V of the bar stock 100 in the first direction divided by the rotational frequency F, that is: Where V: the speed at which the bar moves along the first direction (mm / s) N: Rotational speed of the bar stock (r / min), F = N / 60: Rotational frequency of the bar stock (r / s). To ensure sandblasting without dead angles, the pitch must be less than or equal to the effective sandblasting width W of the sandblasting device 7, i.e. After conversion and rearrangement, it becomes: The moving speed V of the bar stock along the first direction is equal to the moving speed V of the locking base 61 along the first direction.

[0057] In actual sandblasting, considering that the effective sandblasting width W decreases in quality as it moves further away from the nozzle center, an effective sandblasting overlap coefficient K is introduced to improve the surface sandblasting quality of the bar stock 100. This coefficient allows for overlapping sandblasting of the edge areas, thereby... The effective sandblasting overlap coefficient K is generally between 0.7 and 0.9.

[0058] That is, the operator can determine the ratio of the rotation speed N of the bar and the movement V along the first direction based on the effective sandblasting width of the selected nozzle 7, and then determine the output power of the moving drive mechanism 91 and the rotary motor 621, so that the sandblasting device can complete sandblasting without dead angles.

[0059] In actual sandblasting, the varying linear velocity U of the bar stock 100 surface directly affects the residence time and impact density of the sandblasting device 7, thus influencing the sandblasting quality of the bar stock 100 surface. The formula for calculating the linear velocity U at a point on the bar stock 100 surface is as follows: It can be seen that the larger the diameter D of the bar stock 100, the faster the surface linear velocity at the same rotation speed N; the faster the surface linear velocity, the fewer times the sandblasting particles of the sandblasting device 7 hit the unit area, and the shorter the effective residence time, which may lead to uneven sandblasting quality. The operator needs to adjust the corresponding rotation speed N and moving speed V according to the diameter D of the bar stock.

[0060] S7: The locking device alternately clamps different axial parts of the bar and drives it to rotate around its own axis. At the same time, the locking device moving mechanism drives the bar to move continuously along the second direction, and the bar after sandblasting is sandblasted is inspected during the movement. After the bar stock 100 is sandblasted, the right-side locking device 6 and the right-side support device 5, driven by the locking device moving mechanism 9, move the bar stock 100 along the second direction until the left end of the bar stock moves below the cleaning device 8. The second direction is the opposite of the first direction, i.e. Figure 12The bar material on the cleaning device 8 is positioned to the left. The detection device detects that the bar material has reached below the cleaning device 8. The locking device moving mechanism 9 continues to drive the right locking device 6 and the right support device 5 to move further to the left, and the right locking device 6 drives the bar material 100 to rotate synchronously. At this time, the cleaning nozzle 82 blows away the floating dust and residual abrasive on the bar material 100, and the sandblasting quality detection device 10 performs a brake cylinder or manual inspection of the surface sandblasting quality of the bar material 100. When the inspection result is substandard, the sandblasting device 7 will start re-blasting and repeat the inspection until it meets the standard. Preferably, the cleaning device 8, the sandblasting quality detection device 10, and the sandblasting device 7 are arranged sequentially from right to left on the upper guide rail 2, so that the bar material that has been sandblasted is cleaned before being inspected, and if the inspection fails, it is convenient to re-blast the bar material. Once the sandblasting on the left side of the bar stock meets the standard, the left end of the bar stock 100 is inserted into the left locking device 6 (currently in the open state). Driven by the locking device moving mechanism 9, the right locking device 6 and the right support device 5 move the bar stock 100 along the second direction. During this movement, sandblasting quality inspection and / or re-blasting are performed on the middle section of the bar stock. When the left end of the bar stock 100 moves onto the left support device 5, the outer circumferential surface of the middle section of the bar stock 100 has undergone re-blasting and / or sandblasting quality inspection. The left locking device 6 locks the bar stock 100, and the right locking device 6 releases the bar stock 100.

[0061] Driven by the locking device moving mechanism 9, the left locking device 6 and the left supporting device 5 drive the bar 100 to continue moving along the second direction. Following the same operation process as the sandblasting data inspection and re-blasting of the left bar circumferential surface, the right circumferential surface of the bar is sandblasted and / or re-blasted. When the sandblasting quality inspection and / or re-blasting of the right outer circumferential surface of the bar 100 is completed, the sandblasting quality inspection of the entire bar is completed.

[0062] S8: Unload the bar stock after inspection; After the sandblasting quality inspection and / or re-blasting of the outer circumferential surface of the right side portion of the bar stock 100 is completed, the left locking device 6 and the left support device 5, driven by the locking device moving mechanism 9, move the bar stock 100 along the second direction. When the left end of the bar stock 100 moves to a certain distance above the feed port, the locking device moving mechanism 9 stops operating, the left locking device 6 and the left support device 5 pause moving, the pusher drive device 31 starts, pushing the telescopic rod 32 to extend to the left end face of the bar stock 100, and the gripper drive mechanism 34 drives the gripper 35 to clamp the left end portion of the bar stock 100. After the gripper 35 clamps the bar stock 100, the pusher drive device 31 drives the telescopic rod 32 to retract, pulling the bar stock 100 along the second direction to the lifting device 4, and removing most or all of the bar stock 100 from the housing. The operator can then remove the bar stock 100 in any manner.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic sandblasting and loading / unloading device for cylindrical bars, characterized in that, include: Two guide rails arranged opposite each other (2). At least two support devices (5) are disposed at both ends of one of the guide rails (2) and are slidably connected to the guide rail (2) for supporting the bar stock (100), and, The locking device (6) is disposed on the guide rail (2) located on the side of the support device (5) and is slidably connected to the guide rail (2) for clamping or releasing the bar (100) and driving the bar (100) to rotate around its own axis when clamped. The lifting device (4) is mounted on the guide rail (2) located on the side of the support device (5) and is used to lift the bar (100) to a position coaxial with the locking device (6). A sandblasting device (7), which is movably connected to another guide rail (2), is used to sandblast the outer surface of the bar stock (100); The pushing mechanism (3), located on one side of the lifting device (4), is configured to push the bar (100) axially to the support device (5) and pass it through the locking device (6), or to pull the bar (100) out axially from the locking device (6).

2. The automatic sandblasting and loading / unloading device for cylindrical bars according to claim 1, characterized in that, The lifting device (4) includes: A lifting drive device (41) is mounted on a frame (1) and has a lifting rod (42) at its output end. V-shaped support (43) is located at the top of the lifting rod (42) and is used to support the bar stock (100). A detection sensor (44) is disposed at the bottom inside the V-shaped support (43) to detect the shortest distance X between the lowest point of the bar (100) and the bottom inside the V-shaped support (43).

3. The automatic sandblasting and loading / unloading device for cylindrical bars according to claim 2, characterized in that, The V-shaped support (43) has two symmetrically arranged inclined support surfaces, forming an angle θ between the two support surfaces. The shortest distance X and the angle θ are used to calculate the radius of the bar (100). Based on the calculated radius of the bar (100) Determine whether the bar stock (100) is coaxial with the locking device (6).

4. The automatic sandblasting and loading / unloading device for cylindrical bars according to claim 3, characterized in that, The support device (5) includes: A support base (51) is slidably connected to the guide rail (2); A height adjustment mechanism (52) is provided on a support base (51); and, A bar support (53) is provided on the height adjustment mechanism (52) to support the bar (100). The height adjustment mechanism (52) is configured to adjust the height of the bar support (53) according to the shortest distance X and the included angle θ.

5. The automatic sandblasting and loading / unloading device for cylindrical bars according to claim 1, characterized in that, Two locking devices (6) are provided, and the two locking devices (6) are arranged opposite to each other on the guide rail (2). The locking devices (6) include: Locking base (61), which is slidably connected to the guide rail (2); Rotating component (63), which is rotatably connected to the locking base (61); A locking mechanism (64) is provided on the rotating member (63) for clamping and releasing the bar stock (100); A rotary drive mechanism (62) is fixedly mounted on the locking base (61) and connected to the rotating component (63) for driving the rotating component (63) to rotate around its axis.

6. The automatic sandblasting and loading / unloading device for cylindrical bars according to claim 5, characterized in that, It also includes a locking device moving mechanism (9), which is mounted on the locking base (61) and is used to drive the locking device (6) to slide along the guide rail (2).

7. The automatic sandblasting and loading / unloading device for cylindrical bars according to claim 1, characterized in that, The pushing mechanism (3) includes: A pusher drive device (31) is mounted on the frame (1); The telescopic rod (32) has one end connected to the output end of the pusher drive device (31); A pusher plate (33) is disposed at the other end of the telescopic rod (32); The clamping mechanism is disposed on the pusher plate (33) and configured to clamp the bar stock (100) and pull the bar stock (100) axially out of the locking device (6) when the pusher drive device (31) drives the telescopic rod (32) to retract.

8. The automatic sandblasting and loading / unloading device for cylindrical bars according to claim 1, characterized in that, Multiple sandblasting devices (7) are provided and distributed along the extension direction of the guide rail (2); the sandblasting device (7) includes: A sandblasting base (71) is slidably connected to the guide rail (2); A sandblasting height adjustment device (72) is provided on the sandblasting base (71); The nozzle (73) is mounted on the sandblasting height adjustment device (72); The sandblasting device (7) located at both ends of the guide rail (2) further includes a nozzle mounting base (75) and a side sandblasting quality sensor (74). The nozzle mounting base (75) is mounted on the sandblasting height adjustment device (72). The nozzle mounting base (75) is provided with the nozzle (73) and / or the side sandblasting quality sensor (74). The side sandblasting quality sensor (74) is used to detect the sandblasting quality of the corresponding end face of the bar stock (100).

9. The automatic sandblasting and loading / unloading device for cylindrical bars according to any one of claims 1-8, characterized in that, It also includes a sandblasting quality inspection device (10), which is set on the guide rail (2) and located on one side of the sandblasting device (7) for inspecting the surface sandblasting quality of the bar stock (100) after sandblasting treatment.

10. A sandblasting method for cylindrical bars, characterized in that, Includes the following steps: The bar stock (100) is loaded onto the lifting device (4); The lifting device (4) lifts the bar stock (100) to a position coaxial with the locking device (6); Adjust the height of the bar support (54) to match the axial position of the bar (100); The bar (100) is pushed along the first direction by the pushing mechanism (3) so that the bar (100) is mounted on the support device (5) and continues to pass through the locking device (6) located on the same side; when the bar passes through the locking device (6) to a preset distance, the locking device (6) clamps and fixes the bar. The locking device moving mechanism (9) drives the locking device (6) and the supporting device (5) to move synchronously along the first direction until they move to the preset position; The locking device (6) alternately clamps different axial parts of the bar (100) and drives it to rotate around its own axis. At the same time, the locking device moving mechanism (9) drives the bar (100) to move continuously along the first direction, and the bar (100) is sandblasted segment by segment during the movement. The locking device (6) alternately clamps different axial parts of the bar (100) and drives it to rotate around its own axis. At the same time, the locking device moving mechanism (9) drives the bar (100) to move continuously in the second direction, and the bar (100) after sandblasting is tested during the movement.

Images