Automatic double-sided sand blasting system with loopback layout

Abstract

The utility model discloses an automatic double-sided sand blasting system with loopback layout. Comprising a feeding and discharging portal frame mechanism, a feeding table, a first feeding conveying roller, a first sand blasting cleaning mechanism, a first discharging conveying roller, a first conveying belt, a 180-degree turnover mechanism, a second conveying belt, a second feeding conveying roller, a second sand blasting cleaning mechanism, a second discharging conveying roller and a discharging table which are sequentially in butt joint. The conveying direction of the first conveying belt is perpendicular to the conveying direction of the first discharging conveying roller, and the conveying direction of the second conveying belt is perpendicular to the conveying direction of the second feeding conveying roller. The workpieces originally supported by the rollers are supported by the conveying belt, so that the conveying direction of the workpieces is changed. According to the utility model, full-process automation of double-sided sand blasting of the workpiece can be realized, the whole production line can be arranged in a square loopback manner, the structure is compact, the occupied space of equipment is saved, and protection and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, in particular to an automatic double-sided sandblasting system with a loop layout. Background Art

[0002] A sandblaster is a mechanical device that uses compressed air to spray abrasives (such as copper ore sand, quartz sand, corundum, iron sand, and sea sand) onto the surface of a workpiece. The impact and cutting action of the abrasive on the workpiece achieves a certain degree of cleanliness and varying degrees of roughness, thereby improving the mechanical properties of the workpiece surface. Sandblasting has a wide range of applications in industrial applications, including pre-coating and plating workpiece treatment, cleaning and polishing castings, forgings, and workpieces after heat treatment, and deburring and surface beautification of machined parts. Workpieces often require double-sided sandblasting, necessitating the deployment of appropriate equipment components within the production line to fully automate the entire production process, reduce manual labor, and mitigate the health risks of dust released from the sandblasting area. Furthermore, linear production lines occupy a large space, hindering the layout of other production lines within the workshop. Therefore, a rational production line layout is crucial for workshop management. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide an automated double-sided sandblasting system which can realize full-process automation and a compact loop layout.

[0004] The utility model is realized through the following technical solutions:

[0005] The application discloses an automatic double-sided sand blasting system with a loop layout, which comprises a feeding and discharging gantry mechanism, a feeding table, a first feeding conveying roller, a first sand blasting cleaning mechanism, a first discharging conveying roller, a first conveying belt, a 180-degree overturning mechanism, a second conveying belt, a second feeding conveying roller, a second sand blasting cleaning mechanism, a second discharging conveying roller and a discharging table. The first feeding conveying roller is connected with the feeding end of the first sand blasting cleaning mechanism, the first sand blasting cleaning mechanism is used for sand blasting and cleaning the surface of a workpiece, and the discharging end of the first sand blasting cleaning mechanism is connected with the first discharging conveying roller. The first discharging conveying roller is connected with the first conveying belt, and the conveying directions of the first conveying belt and the first discharging conveying roller are perpendicular to each other. The first conveying belt, the 180-degree overturning mechanism and the second conveying belt are connected in sequence in a straight line. The 180-degree overturning mechanism is used for overturning the workpiece on the first conveying belt by 180 degrees and then placing the workpiece on the second conveying belt. The second conveying belt is connected with the second feeding conveying roller, and the conveying directions of the second conveying belt and the second feeding conveying roller are perpendicular to each other. The second feeding conveying roller is connected with the feeding end of the second sand blasting cleaning mechanism. The second sand blasting cleaning mechanism is used for sand blasting and cleaning the other surface of the workpiece. The discharging end of the second sand blasting cleaning mechanism is connected with the second discharging conveying roller. The feeding table is located close to the feeding end of the first feeding conveying roller. The discharging table is located close to the discharging end of the second discharging conveying roller. The feeding end of the first feeding conveying roller, the feeding table, the discharging table and the discharging end of the second discharging conveying roller are located on a straight line. The feeding and discharging gantry mechanism is located above the feeding end of the first feeding conveying roller, the feeding table, the discharging table and the discharging end of the second discharging conveying roller, and is used for transferring the product on the feeding table to the feeding end of the first feeding conveying roller and transferring the product on the discharging end of the second discharging conveying roller to the discharging table. The workpiece on the feeding table is transferred to the first feeding conveying roller by the feeding and discharging gantry mechanism, and then is conveyed to the first sand blasting cleaning mechanism by the first feeding conveying roller for sand blasting and cleaning. After sand blasting and cleaning, the workpiece is transferred to the first conveying belt by the first discharging conveying roller, is overturned by the 180-degree overturning mechanism, is transferred to the second conveying belt, is transferred to the second feeding conveying roller by the second conveying belt, is conveyed to the second sand blasting cleaning mechanism by the second feeding conveying roller, is sand blasted and cleaned on the other surface, and then is transferred to the discharging table by the second discharging conveying roller.

[0006] Furthermore, the first discharging conveyor roller includes a mounting frame and several rollers arranged in parallel in the horizontal direction and capable of synchronously rolling on the mounting frame, with a gap left between two adjacent rollers. The mounting frame is connected to a lifting drive assembly, and the lifting drive assembly is used to drive the mounting frame and the several rollers thereon to lift and lower; the first conveying belt includes several conveyor belts arranged in parallel in the horizontal direction and capable of synchronously running, and the conveyor belts are arranged in the gaps between the rollers on the first discharging conveyor roller, and one conveyor belt corresponds to one gap, that is, the conveyor belt and the rollers are parallel to each other, and several conveyor belts are separated from each other by the rollers. When the rollers descend under the drive of the lifting drive assembly, the workpiece originally supported by the rollers is now supported by the conveyor belts, and the workpiece is changed from being transported by the first discharging conveyor roller to being transported by the first conveyor belt, thereby changing the conveying direction of the workpiece.

[0007] Furthermore, the second feed conveyor roller includes a mounting frame and several rollers arranged in parallel in the horizontal direction and capable of synchronously rolling on the mounting frame, with a gap left between two adjacent rollers. The mounting frame is connected to a lifting drive assembly, and the lifting drive assembly is used to drive the mounting frame and the several rollers thereon to lift and lower; the second conveyor belt includes several conveyor belts arranged in parallel in the horizontal direction and capable of synchronously running, and the conveyor belts are arranged in the gaps between the rollers on the second feed conveyor roller, and one conveyor belt corresponds to one gap, that is, the conveyor belt and the roller are parallel to each other, and several conveyor belts are separated from each other by the rollers. When the roller rises under the drive of the lifting drive assembly, the workpiece originally supported by the conveyor belt is now supported by the roller, and the workpiece is changed from being transported by the second conveyor belt to being transported by the second feed conveyor roller, thereby changing the conveying direction of the workpiece.

[0008] Furthermore, the lifting drive assembly includes a lifting cylinder, the lifting cylinder is mounted on a frame, and the mounting frame is connected to the telescopic end of the lifting cylinder.

[0009] Furthermore, the 180-degree flipping mechanism includes a servo motor, a transmission shaft and a flipping fixture. The transmission shaft is arranged between the first conveyor belt and the second conveyor belt. The servo motor is connected to the transmission shaft. The flipping fixture is fixed on the transmission shaft, which includes a first clamp and a second clamp arranged opposite to each other. A accommodating space is formed between the first clamp and the second clamp, which can accommodate the workpiece and can be connected to the first conveyor belt and the second conveyor belt. After the workpiece on the first conveyor belt enters the accommodating space, the flipping fixture is driven by the servo motor to rotate until it is connected to the second conveyor belt. The workpiece in the accommodating space is flipped 180 degrees and then transferred to the second conveyor belt.

[0010] Furthermore, the first conveyor belt includes a plurality of first conveyor belts arranged in parallel in the horizontal direction and capable of running synchronously, and the second conveyor belt includes a plurality of second conveyor belts arranged in parallel in the horizontal direction and capable of running synchronously, and gaps are left between adjacent two first conveyor belts and between adjacent two second conveyor belts; the flipping clamps are arranged in several groups along the transmission shaft, and each group of flipping clamps can fall into the gap between two adjacent first conveyor belts or between two adjacent second conveyor belts when flipped, and a group of flipping clamps corresponds to one gap.

[0011] Furthermore, the length of the first clamp is greater than that of the second clamp. When the flip clamp is docked with the first conveyor belt, the second clamp is located at the top and the first clamp is located at the bottom. When the flip clamp is docked with the second conveyor belt, the first clamp is located at the top and the second clamp is located at the bottom. In this way, the workpiece can smoothly enter the accommodating space and smoothly exit from the accommodating space.

[0012] Furthermore, the loading and unloading gantry mechanism includes a gantry, a linear moving component, a lifting moving component and a suction cup gripper, the linear moving component is arranged on the gantry, the lifting moving component is arranged on the linear moving component, and the suction cup gripper for grasping the workpiece is arranged on the lifting moving component.

[0013] Furthermore, the linear motion component includes a linear guide rail, a drive motor, a gear, a rack and a mounting plate. The linear guide rail and the rack are arranged parallel to each other on the gantry and are located above the loading and unloading platforms. The mounting plate can be slidably mounted on the linear guide rail through a slider. The gear can be rotatably mounted on the mounting plate and meshed with the rack. The drive motor is connected to the gear drive. The lifting and moving component includes a lifting cylinder and a gripper frame. The lifting cylinder is mounted on the mounting plate. The gripper frame is arranged at the telescopic end of the lifting cylinder. Several suction cup grippers are evenly distributed on the gripper frame.

[0014] Furthermore, the loading platform, the first feeding conveyor roller, the first sandblasting cleaning mechanism, the first discharging conveyor roller, the first conveyor belt, the 180-degree turning mechanism, the second conveyor belt, the second feeding conveyor roller, the second sandblasting cleaning mechanism, the second discharging conveyor roller and the unloading platform are connected to each other and form a mouth shape, and an electric control box is arranged in the middle of the mouth shape.

[0015] The utility model realizes the full process automation of double-sided sandblasting of workpieces by arranging components such as a loading and unloading gantry mechanism, a loading platform, a first feeding conveyor roller, a first sandblasting cleaning mechanism, a first discharging conveyor roller, a first conveyor belt, a 180-degree turning mechanism, a second conveyor belt, a second feeding conveyor roller, a second sandblasting cleaning mechanism, a second discharging conveyor roller and a discharging platform, and designing a docking structure between these components. Moreover, since the discharging conveyor roller is perpendicular to the conveying direction of the conveying belt, the production line can be arranged in a U-shaped loop layout with a compact structure, which saves equipment space and is also conducive to protection and maintenance; the loading platform and the discharging platform are arranged adjacent to each other, which is convenient for manual or automatic loading and unloading operations at the same time, and a set of gantry mechanisms can also be shared, further saving space and equipment costs; the rollers on the discharging conveyor roller and the conveyor belt on the conveyor belt are staggered with each other, and the workpiece is smoothly transitioned and docked between the two through the lifting mechanism, thereby changing the conveying direction of the workpiece, with a simple structure and easy implementation; the 180-degree turning mechanism has a simple structure, does not require a conveyor belt structure docked on both sides, and does not take up space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 It is a front view of an embodiment of the present utility model.

[0018] Figure 3 It is a front schematic diagram of the second conveyor belt and the second feed conveyor roller in an embodiment of the present utility model.

[0019] Figure 4 It is a top view schematic diagram of the second conveyor belt and the second feed conveyor roller in an embodiment of the present utility model.

[0020] Figure 5 This is a schematic structural diagram of the 180-degree flip mechanism in an embodiment of the present utility model.

[0021] Figure 6 This is a front view of the 180-degree flip mechanism in an embodiment of the present invention.

[0022] Figure 7 It is a top view schematic diagram of the 180-degree turning mechanism and the conveying belts on both sides in an embodiment of the utility model.

[0023] Figure 8 It is a top view schematic diagram of the loading and unloading gantry mechanism in the embodiment of the present utility model.

[0024] Reference numerals: 1-loading and unloading gantry mechanism; 2-loading platform; 3-first feeding conveyor roller; 4-first sandblasting cleaning mechanism; 5-first discharging conveyor roller; 6-first conveyor belt; 7-180-degree turning mechanism; 8-second conveyor belt; 9-second feeding conveyor roller; 10-second sandblasting cleaning mechanism; 11-second discharging conveyor roller; 12-second discharging platform; 13-electric control box; 14-workpiece; 61-first conveyor belt; 7 1- flip frame; 72- first servo motor; 73- transmission shaft; 74- first clamp; 75- second clamp; 76- accommodating space; 81- second conveyor belt; 91- second roller; 92- second mounting frame; 93- second lifting cylinder; 94- roller frame; 101- linear guide rail; 102- rack; 103- mounting plate; 104- second servo motor; 105- gripper frame; 106- suction cup gripper; 107- gantry frame. DETAILED DESCRIPTION

[0025] An automated double-sided sandblasting system with a loop layout, such as Figure 1 、 Figure 2As shown, it comprises a feeding and discharging gantry mechanism 1, a feeding table 2, a first feeding conveying roller 3, a first sand blasting cleaning mechanism 4, a first discharging conveying roller 5, a first conveying belt 6, a 180-degree overturning mechanism 7, a second conveying belt 8, a second feeding conveying roller 9, a second sand blasting cleaning mechanism 10, a second discharging conveying roller 11 and a second discharging table 12. The first feeding conveying roller 3 is connected with the feeding end of the first sand blasting cleaning mechanism 4. The first sand blasting cleaning mechanism 4 is used for sand blasting and cleaning the surface of the workpiece 14. The discharging end of the first sand blasting cleaning mechanism 4 is connected with the first discharging conveying roller 5. The first discharging conveying roller 5 is connected with the first conveying belt 6. The conveying direction of the first conveying belt 6 is perpendicular to the conveying direction of the first discharging conveying roller 5. The first conveying belt 6, the 180-degree overturning mechanism 7 and the second conveying belt 8 are connected in sequence in a straight line. The 180-degree overturning mechanism 7 is used for overturning the workpiece 14 on the first conveying belt 6 by 180 degrees and then placing it on the second conveying belt 8. The second conveying belt 8 is connected with the second feeding conveying roller 9. The conveying direction of the second conveying belt 8 is perpendicular to the conveying direction of the second feeding conveying roller 9. The second feeding conveying roller 9 is connected with the feeding end of the second sand blasting cleaning mechanism 10. The second sand blasting cleaning mechanism 10 is used for sand blasting and cleaning the other surface of the workpiece 14. The discharging end of the second sand blasting cleaning mechanism 10 is connected with the second discharging conveying roller 11. The feeding table 2 is located at a position close to the feeding end of the first feeding conveying roller 3. The second discharging table 12 is located at a position close to the discharging end of the second discharging conveying roller 11. The feeding end of the first feeding conveying roller 3, the feeding table 2, the second discharging table 12 and the discharging end of the second discharging conveying roller 11 are located on a straight line. The feeding and discharging gantry mechanism 1 is located above the feeding end of the first feeding conveying roller 3, the feeding table 2, the second discharging table 12 and the discharging end of the second discharging conveying roller 11. It is used for transferring the product on the feeding table 2 to the feeding end of the first feeding conveying roller 3 and transferring the product on the discharging end of the second discharging conveying roller 11 to the second discharging table 12. The workpiece 14 on the feeding table 2 is transferred to the first feeding conveying roller 3 by the feeding and discharging gantry mechanism 1, then conveyed to the first sand blasting cleaning mechanism 4 by the first feeding conveying roller 3 for sand blasting and cleaning, then transferred to the first conveying belt 6 by the first discharging conveying roller 5, overturned by the 180-degree overturning mechanism 7, then transferred to the second feeding conveying roller 9 by the second conveying belt 8, conveyed to the second sand blasting cleaning mechanism 10 by the second feeding conveying roller 9, sand blasted and cleaned on the other surface, then arrived at the second discharging conveying roller 11, and finally transferred to the second discharging table 12 by the feeding and discharging gantry mechanism 1. The position layout of the above components makes the whole system present a loop structure. Each functional mechanism can be concentrated in one place.

[0026] In the embodiment, as shown in Figure 1The upper feeding table 2, the first feeding conveying roller 3, the first sand blasting cleaning mechanism 4, the first discharging conveying roller 5, the first conveying belt 6, the 180-degree overturning mechanism 7, the second conveying belt 8, the second feeding conveying roller 9, the second sand blasting cleaning mechanism 10, the second discharging conveying roller 11 and the second discharging lower feeding table 12 are in butt joint with each other, the upper feeding table 2 and the second discharging lower feeding table 12 are arranged adjacently, these mechanisms are collectively enclosed into a mouth-shaped type, and the middle of the mouth-shaped type is provided with the electric control box 13, so that the overall layout is compact and space-saving.

[0027] In order to make the workpiece 14 on the first discharging conveying roller 5 transfer to the first conveying belt 6 so as to change the conveying direction, the first discharging conveying roller 5 and the first conveying belt 6 can be directly butt joint at the head and tail, and the workpiece 14 slides between the first discharging conveying roller 5 and the first conveying belt 6. In order to make the transfer process more smooth, as one of the embodiments, the first discharging conveying roller 5 comprises a first mounting frame and a plurality of first rollers arranged on the first mounting frame and parallel arranged in the horizontal direction and capable of synchronous rolling, a gap is left between two adjacent first rollers, the first mounting frame is connected with a first lifting driving assembly, the first lifting driving assembly is used for driving the first mounting frame and the plurality of first rollers on the first mounting frame to lift integrally, the first conveying belt 6 comprises a plurality of first conveying belts 61 which are parallel arranged in the horizontal direction and capable of synchronous running, and the first conveying belts 61 are arranged in the gaps between the first rollers of the first discharging conveying roller 5, one first conveying belt 61 corresponds to one gap, that is, the first conveying belt 61 is parallel to the first roller, and the plurality of first conveying belts 61 are separated by the first rollers, when the first rollers are driven to descend by the first lifting driving assembly, the workpiece 14 originally supported by the first rollers becomes supported by the first conveying belts 61, the workpiece 14 is conveyed by the first discharging conveying roller 5 and becomes conveyed by the first conveying belt 6, so as to change the conveying direction of the workpiece 14.

[0028] The butt joint structure between the second feeding conveying roller 9 and the second conveying belt 8 is the same as the butt joint structure between the first discharging conveying roller 5 and the first conveying belt 6, specifically, Figure 3 , Figure 4The second feeding conveying roller 9 includes a second mounting frame 92 and a plurality of second rollers 91 arranged in parallel in the horizontal direction and capable of synchronously rolling on the second mounting frame 92. A gap is left between two adjacent second rollers 91. The second mounting frame 92 is connected to a second lifting drive assembly. The second lifting drive assembly is used to drive the second mounting frame 92 and the plurality of second rollers 91 thereon to rise and fall; the second conveying belt 8 includes a plurality of second conveyor belts 81 arranged in parallel in the horizontal direction and capable of synchronously running, and the second conveyor belts 81 are arranged in the gaps between the second rollers 91 on the second feeding conveying roller 9, and one second conveyor belt 81 corresponds to one gap, that is, the second conveyor belt 81 and the second roller 91 are parallel to each other, and the plurality of second conveyor belts 81 are separated from each other by the second roller 91. When the second roller 91 rises under the drive of the second lifting drive assembly, the workpiece 14 originally supported by the second conveyor belt 81 is now supported by the second roller 91, and the workpiece 14 is transported by the second conveyor belt 8 instead of by the second feeding conveying roller 9, thereby changing the conveying direction of the workpiece 14.

[0029] The lifting drive assembly can be an existing structure or form, such as a structure in which a servo motor drives a screw rod. The first lifting drive assembly and the second lifting drive assembly in this embodiment are both structures driven by lifting cylinders. The first lifting cylinder and the second lifting cylinder 93 are installed on the roller frame 94, and the first mounting frame or the second mounting frame 92 is connected to the telescopic end of the first lifting cylinder.

[0030] The function of the 180-degree turning mechanism 7 is to turn the workpiece 14 180 degrees. Figures 5 to 7 As shown, the 180-degree flipping mechanism 7 includes a first servo motor 72, a transmission shaft 73 and a flipping fixture. The transmission shaft 73 is arranged between the first conveyor belt 6 and the second conveyor belt 8. The first servo motor 72 is connected to the transmission shaft 73 for transmission. The first servo motor 72 and the transmission shaft 73 can be installed on the first flipping frame 71. The flipping fixture is fixed on the transmission shaft 73, which includes a first clamp 74 and a second clamp 75 arranged opposite to each other. A accommodating space 76 is formed between the first clamp 74 and the second clamp 75, which can accommodate the workpiece 14 and can be connected to the first conveyor belt 6 and the second conveyor belt 8. After the workpiece 14 on the first conveyor belt 6 enters the accommodating space 76, the flipping fixture is driven by the first servo motor 72 to rotate until it is connected to the second conveyor belt 8. The workpiece 14 in the accommodating space 76 is flipped 180 degrees and transferred to the second conveyor belt 8.

[0031] As one embodiment, the first conveyor belt 6 includes a plurality of first conveyor belts 61 arranged in parallel in the horizontal direction and capable of synchronous operation, and the second conveyor belt 8 includes a plurality of second conveyor belts 81 arranged in parallel in the horizontal direction and capable of synchronous operation, with gaps being left between adjacent first conveyor belts 61 and adjacent second conveyor belts 81; the flipping fixtures are provided in a plurality of groups along the transmission shaft 73, and each group of flipping fixtures can fall into the gap between adjacent first conveyor belts 61 or between adjacent second conveyor belts 81 when flipped, and a group of flipping fixtures corresponds to one gap. Figure 7 The length of the first clamp 74 is greater than that of the second clamp 75. When the flip clamp is docked with the first conveyor belt 61, the second clamp 75 is located at the top and the first clamp 74 is located at the bottom. When the flip clamp is docked with the second conveyor belt 81, the first clamp 74 is located at the top and the second clamp 75 is located at the bottom. In this way, the workpiece 14 can smoothly enter the accommodating space 76 and smoothly exit from the accommodating space 76.

[0032] In this embodiment, Figure 8 The loading and unloading gantry mechanism 1 includes a gantry 107, a linear moving component, a lifting moving component (not shown) and a suction cup gripper 106. The linear moving component is arranged on the gantry 107, the lifting moving component is arranged on the linear moving component, and the suction cup gripper 106 for grasping the workpiece 14 is arranged on the lifting moving component.

[0033] As one embodiment, the linear motion component includes a linear guide 101, a second servo motor 104, a gear (not shown), a rack 102 and a mounting plate 103. The linear guide 101 and the rack 102 are arranged parallel to each other on the gantry 107 and are located above the loading platform 2 and the second unloading platform 12. The mounting plate 103 is slidably mounted on the linear guide 101 through a slider. The gear is rotatably mounted on the mounting plate 103 and meshes with the rack 102. The second servo motor 104 is driven by the gear. The second servo motor 104 drives the gear to rotate. The gear meshes with the rack 102 and moves along the direction of the rack 102, driving the mounting plate 103 to slide linearly along the direction of the linear guide 101. The lifting and moving assembly includes a second lifting cylinder 93 and a grab frame 105. The second lifting cylinder 93 is installed on the mounting plate 103. The grab frame 105 is arranged at the telescopic end of the second lifting cylinder 93. Several suction cup grabbers 106 are evenly distributed on the grab frame 105.

[0034] The loading and unloading systems can share a single set of suction cup grippers 106, or two sets can be provided, each independent of the other. Correspondingly, two sets of linear motion components and lifting and lowering components are provided, and the linear guide rails 101 and racks 102 in the two linear motion components can be shared. The sandblasting cleaning mechanism can utilize existing sandblasting equipment, or it can be improved based on actual needs, such as adding static elimination components.

[0035] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. An automatic double-sided sandblasting system with a loop layout, characterized in that: The present invention comprises an unloading and loading gantry mechanism, a loading platform, a first feeding conveyor roller, a first sandblasting cleaning mechanism, a first discharging conveyor roller, a first conveyor belt, a 180-degree turning mechanism, a second conveyor belt, a second feeding conveyor roller, a second sandblasting cleaning mechanism, a second discharging conveyor roller and an unloading platform, wherein the first feeding conveyor roller is docked with the feeding end of the first sandblasting cleaning mechanism, the first sandblasting cleaning mechanism is used to sandblast and clean the surface of the workpiece, and the discharging end of the first sandblasting cleaning mechanism is docked with the first discharging conveyor roller; the first discharging conveyor roller is docked with the first conveyor belt, and the conveying direction of the first conveyor belt is perpendicular to the conveying direction of the first discharging conveyor roller; the first conveyor belt, the 180-degree turning mechanism and the second conveyor belt are docked in sequence in a straight line, and the 180-degree turning mechanism is used to turn the workpiece on the first conveyor belt 180 degrees and then place it on the second conveyor belt; the second conveyor belt is docked with the second The feed conveyor rollers are docked, and the conveying direction of the second conveyor belt is perpendicular to the conveying direction of the second feed conveyor roller, the second feed conveyor roller is docked with the feed end of the second sandblasting cleaning mechanism, the second sandblasting cleaning mechanism is used to sandblast and clean the other surface of the workpiece, and the discharging end of the second sandblasting cleaning mechanism is docked with the second discharging conveyor roller; the loading platform is located near the feed end of the first feed conveyor roller, the unloading platform is located near the discharging end of the second discharging conveyor roller, and the feed end of the first feed conveyor roller, the loading platform, the unloading platform and the discharging end of the second discharging conveyor roller are located in a straight line, the loading and unloading gantry mechanism is located above the feed end of the first feed conveyor roller, the loading platform, the unloading platform and the discharging end of the second discharging conveyor roller, and is used to transfer the products on the loading platform to the feed end of the first feed conveyor roller, and to transfer the products on the discharging end of the second discharging conveyor roller to the unloading platform.

2. The automatic double-sided sandblasting system with a loop layout according to claim 1, characterized in that: The first discharging conveying roller includes a mounting frame and a plurality of rollers arranged in parallel in the horizontal direction and capable of synchronously rolling on the mounting frame, with a gap left between two adjacent rollers. The mounting frame is connected to a lifting drive assembly, and the lifting drive assembly is used to drive the mounting frame and the plurality of rollers thereon to lift and lower; the first conveying belt includes a plurality of conveyor belts arranged in parallel in the horizontal direction and capable of synchronously running, and the conveyor belts are arranged in the gaps between the rollers on the first discharging conveying roller, and one conveyor belt corresponds to one gap. When the roller descends under the drive of the lifting drive assembly, the workpiece originally supported by the roller is now supported by the conveyor belt, and the workpiece is changed from being transported by the first discharging conveying roller to being transported by the first conveyor belt, thereby changing the conveying direction of the workpiece.

3. The loop layout automatic double-sided sandblasting system according to claim 1, characterized in that: The second feed conveyor roller includes a mounting frame and several rollers arranged in parallel in the horizontal direction and capable of synchronously rolling on the mounting frame, with a gap left between two adjacent rollers. The mounting frame is connected to a lifting drive assembly, and the lifting drive assembly is used to drive the mounting frame and the several rollers thereon to lift and lower; the second conveyor belt includes several conveyor belts arranged in parallel in the horizontal direction and capable of synchronously running, and the conveyor belts are arranged in the gaps between the rollers on the second feed conveyor roller, and one conveyor belt corresponds to one gap. When the roller rises under the drive of the lifting drive assembly, the workpiece originally supported by the conveyor belt is now supported by the roller, and the workpiece is changed from being conveyed by the second conveyor belt to being conveyed by the second feed conveyor roller, thereby changing the conveying direction of the workpiece.

4. The automatic double-sided sandblasting system with a loop layout according to claim 2 or 3, characterized in that: The lifting drive assembly includes a lifting cylinder, the lifting cylinder is installed on a frame, and the mounting frame is connected to the telescopic end of the lifting cylinder.

5. The loop layout automatic double-sided sandblasting system according to claim 1, characterized in that: The 180-degree flipping mechanism includes a servo motor, a transmission shaft and a flipping fixture. The transmission shaft is arranged between the first conveyor belt and the second conveyor belt. The servo motor is connected to the transmission shaft. The flipping fixture is fixed on the transmission shaft. It includes a first clamp and a second clamp arranged opposite to each other. A accommodating space is formed between the first clamp and the second clamp, which can accommodate the workpiece and can be connected to the first conveyor belt and the second conveyor belt. After the workpiece on the first conveyor belt enters the accommodating space, the flipping fixture is driven by the servo motor to rotate until it is connected to the second conveyor belt. The workpiece in the accommodating space is flipped 180 degrees and then transferred to the second conveyor belt.

6. The loop layout automatic double-sided sandblasting system according to claim 5, characterized in that: The first conveyor belt includes several first conveyor belts arranged in parallel in the horizontal direction and can run synchronously, and the second conveyor belt includes several second conveyor belts arranged in parallel in the horizontal direction and can run synchronously, and there is a gap between two adjacent first conveyor belts and between two adjacent second conveyor belts; the flipping clamps are arranged in several groups along the transmission shaft, and when each group of flipping clamps is flipped, it can fall into the gap between two adjacent first conveyor belts or between two adjacent second conveyor belts, and one group of flipping clamps corresponds to one gap.

7. The loop layout automated double-sided sandblasting system according to claim 5, characterized in that: The length of the first clamp is greater than that of the second clamp. When the flip clamp is docked with the first conveyor belt, the second clamp is located at the top and the first clamp is located at the bottom. When the flip clamp is docked with the second conveyor belt, the first clamp is located at the top and the second clamp is located at the bottom.

8. The loop layout automated double-sided sandblasting system according to claim 1, characterized in that: The loading and unloading gantry mechanism includes a gantry, a linear moving component, a lifting moving component and a suction cup gripper. The linear moving component is arranged on the gantry, the lifting moving component is arranged on the linear moving component, and the suction cup gripper for grasping the workpiece is arranged on the lifting moving component.

9. The loop layout automatic double-sided sandblasting system according to claim 8, characterized in that: The linear motion component includes a linear guide rail, a drive motor, a gear, a rack and a mounting plate. The linear guide rail and the rack are arranged parallel to each other on the gantry and are located above the loading platform and the unloading platform. The mounting plate can be slidably mounted on the linear guide rail through a slider. The gear can be rotatably mounted on the mounting plate and meshed with the rack. The drive motor is connected to the gear drive. The lifting and moving component includes a lifting cylinder and a gripper frame. The lifting cylinder is mounted on the mounting plate. The gripper frame is arranged at the telescopic end of the lifting cylinder. Several suction cup grippers are evenly distributed on the gripper frame.

10. The loop layout automated double-sided sandblasting system according to claim 1, characterized in that: The loading platform, the first feeding conveyor roller, the first sandblasting cleaning mechanism, the first discharging conveyor roller, the first conveyor belt, the 180-degree turning mechanism, the second conveyor belt, the second feeding conveyor roller, the second sandblasting cleaning mechanism, the second discharging conveyor roller and the unloading platform are connected to each other and enclosed in a mouth shape, and an electric control box is provided in the middle of the mouth shape.

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