Automatic sandblasting method for planar target material

Abstract

The invention discloses an automatic sandblasting device and an automatic sandblasting method for a planar target material. The sandblasting device comprises a central sandblasting unit and a side sandblasting unit. The side sandblasting unit is provided with a side sandblasting gun, the muzzle of the side sandblasting gun faces the side of the target material, and the central sandblasting unit is provided with a central sandblasting gun, the muzzle of the central sandblasting gun faces the plate surface of the target material, at least the central sandblasting gun is a swinging spray gun, and the swinging direction of the central sandblasting gun is perpendicular to the forward direction of movement of a conveying device. The invention discloses an automatic sandblasting method for a planar target material. The automatic sandblasting device and the automatic sandblasting method of the invention can effectively improve the sandblasting efficiency and improve the sandblasting yield rate.

Description

Technical Field

[0001] This invention relates to the field of target blasting technology, and in particular to an automatic blasting method for planar targets. Background Technology

[0002] Burrs and protrusions are unavoidable during the machining of sputtering targets, especially at the edges and corners. To avoid arcing caused by these burrs during use, sandblasting of the sides and non-sputtering areas of the target is required to remove burrs and other protrusions, as well as machining marks.

[0003] Because the areas requiring sandblasting include the four sides and the non-splashing areas of the target surface, the direction and shape of the sandblasting area are irregular. Historically, target sandblasting has been primarily done manually. During manual sandblasting, the uneven movement speed of the sandblaster results in significant roughness deviations on the sandblasted surface; roughness measurements at different locations can deviate by up to Ra 2.0 μm, and missed areas are also prone to occur. Manual sandblasting is inefficient, requiring 20 minutes to sandblast one flat target surface. Furthermore, manual sandblasting is highly dangerous; as it is a manual operation, even with protective gear, there is still a risk of injury from the high-pressure sand particles sprayed out. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the primary objective of this invention is to provide an automated sandblasting method for planar targets, thereby improving sandblasting efficiency and yield, and enhancing the safety of sandblasting operations.

[0005] The second objective of this invention is to provide an automatic sandblasting method for planar targets, which can fully cover the planar target in one pass, improve the sandblasting efficiency of the planar target, improve the sandblasting uniformity of the planar target, improve the degree of automation of the sandblasting of the planar target, and improve the safety factor of the sandblasting operation.

[0006] To achieve the aforementioned first objective, the technical solution adopted by the present invention is: an automatic sandblasting device for planar targets, comprising a sandblasting chamber and a sandblasting platform, the sandblasting chamber being connected to the sandblasting platform, the sandblasting platform being provided with a conveying device for moving the target, the sandblasting chamber being provided with a sandblasting device, the sandblasting device being positioned above the conveying device, the sandblasting device comprising a central sandblasting unit and a side sandblasting unit, the side sandblasting unit being provided with a side sandblasting gun, the nozzle of the side sandblasting gun facing the side of the target, the central sandblasting unit being provided with a central sandblasting gun, the nozzle of the central sandblasting gun facing the surface of the target, at least the central sandblasting gun being a swinging gun, the swinging direction of the central sandblasting gun being perpendicular to the forward direction of the conveying device.

[0007] In a further technical solution, the central sandblasting unit is provided with a central swinging part, which is driven and connected to the central sandblasting gun. The central swinging part includes a central swinging rod and a swinging drive device. The central swinging rod is oscillatingly installed in the middle of the sandblasting chamber, and the swinging drive device is driven and connected to the central swinging rod. The central sandblasting gun is installed on the central swinging rod and oscillates back and forth along the width direction of the target material.

[0008] In a further technical solution, the side sandblasting unit is provided with a side swinging part, which is driven and connected to the side sandblasting gun. The side swinging part includes a side swinging rod and the swinging drive device. The side swinging rod is swing-mounted on one side of the sandblasting chamber. The swinging drive device is driven and connected to the side swinging rod. The side sandblasting gun is mounted on the side swinging rod and swings back and forth along the height direction of the target material.

[0009] In a further technical solution, the central swing rod is provided with a fixed base, a central connecting rod, and a central gun connecting rod. The fixed base is provided with a swing rod connecting hole and a central rod connecting hole. The central swing rod passes through the swing rod connecting hole, and the fixed base is installed on the central swing rod. The central connecting rod is provided with a central connecting rod and a central base. One end of the central connecting rod is installed on the central base, and the other end of the central connecting rod is installed in the central rod connecting hole. The central base is provided with a base hole, and one end of the central gun connecting rod is installed in the base hole. The other end of the central gun connecting rod is rotatably installed on the central sandblasting gun. The side swing rod is provided with a side fixed base. The side fixed base is provided with a rotating part and a side connecting rod. The rotating part is rotatably installed on the side fixed base and has a side rod connecting hole. One end of the side connecting rod is installed in the side rod connecting hole, and the other end of the side connecting rod is rotatably installed on the side sandblasting gun.

[0010] In a further technical solution, the sandblasting chamber is provided with a sand inlet, and the sand inlet is provided with multiple sand outlets. The central sandblasting gun or the side sandblasting gun is connected to the corresponding sand outlet. The lower part of the sandblasting chamber is provided with multiple inclined recovery plates, which surround to form a sandblasting recovery chamber. The lower sides of the multiple inclined recovery plates are all inclined towards the center of the sandblasting recovery chamber.

[0011] In a further technical solution, the sandblasting chamber is provided with a control unit, the central swing rod is provided with a plurality of central sandblasting guns, the side swing rod is provided with a plurality of side sandblasting guns, each central sandblasting gun and each side sandblasting gun are respectively connected to the control unit, and the conveying device is provided with a plurality of conveying rollers and a conveying control unit, the conveying control unit is connected to the conveying rollers, and the conveying rollers are rotatably mounted on the conveying device.

[0012] In a further technical solution, the distance between the muzzle of the central sandblasting gun and the side sandblasting gun and the sandblasting surface of the target material is set to 200mm to 250mm, and the angle between the central sandblasting gun and the side sandblasting gun and the corresponding sandblasting surface of the target material is set to 30° to 45°.

[0013] To achieve the second objective mentioned above, the technical solution adopted by the present invention is: an automatic sandblasting method for a planar target material, wherein the target material is placed on the conveying device, the conveying device moves along the length direction of the target material, the nozzle of the central sandblasting gun faces the surface of the target material, and the nozzle of the side sandblasting gun faces the side of the target material. Among the central sandblasting gun and the side sandblasting gun, the central sandblasting gun oscillates back and forth along the width direction of the target material. When the diameter of the sandblasting range of the side sandblasting gun is greater than the thickness of the target material, the side sandblasting gun is fixed or oscillating. When the diameter of the sandblasting range of the side sandblasting gun is less than the thickness of the target material, the side sandblasting gun oscillates back and forth along the thickness direction of the target material.

[0014] An automatic sandblasting method for a planar target includes the following steps: a) a preparation step, placing the target on a transport device, with the nozzle of the central sandblasting gun facing the surface of the target and the nozzle of the side sandblasting gun facing the side of the target; b) a sandblasting step, the transport device moving the target, with at least the central sandblasting gun oscillating along the width of the target, and the transport device, the central sandblasting gun, and the side sandblasting guns cooperating in a predetermined manner, including at least one or two methods. In method one, the transport device is equipped with... The target advance unit is selected from the middle sandblasting gun and the side sandblasting gun, with the smaller diameter of the sandblasting range as a target advance unit. After the conveying device moves one target advance unit and pauses, the middle sandblasting gun swings from one side of the target width to the other side, thus completing sandblasting of one target width and forming a sandblasted area on the target surface in the target width direction. When the diameter of the sandblasting range of the side sandblasting gun is smaller than the thickness of the target, the side sandblasting gun swings from one side of the target thickness to the other side, thus completing sandblasting of one target thickness. If the diameter of the sandblasting range is greater than the thickness of the target material, the side sandblasting gun is fixed with a sandblasting time setting to create a sandblasting area along the thickness of the target material on its side. After both the central and side sandblasting guns have completed sandblasting of one target width and one target thickness, the transport device moves another target forward unit in the target forward direction. The transport device moves, and the central and side sandblasting guns alternate in this manner until the entire target material is sandblasted. Alternatively, the time required for the central sandblasting gun to swing from one side of the target width to the other side is set to t. The distance traveled from one side of the target width to the other side of the target width is set to m, where m is greater than the target width. The diameter of the blasting range of the central sandblasting gun is set to n, and the moving speed of the central sandblasting gun is m / t. The moving speed of the conveying device is less than or equal to n / 2t. When the side sandblasting gun is set to swing, the swing speed of the side sandblasting gun is set to be equal to the swing speed of the central sandblasting gun. When the side sandblasting gun is set to fixed, the blasting time of the side sandblasting gun is t / m for every n moves of the conveying device. The conveying device moves at a constant speed until the target is fully blasted.

[0015] In a further technical solution, the target material includes a back plate and a planar target. The planar target is bound to the back plate, and an irregular surface is provided at the end of the planar target. In the sandblasting step b), the irregular surface is sandblasted by a central sandblasting gun and a side sandblasting gun, respectively.

[0016] The advantages of this invention compared to the prior art are:

[0017] 1. The automatic sandblasting equipment for planar targets of the present invention achieves uniform speed movement of the planar target during the sandblasting process through a conveying device, thereby reducing the roughness deviation of the sandblasting effect from Ra2.0um to Ra0.5um;

[0018] 2. The automatic sandblasting equipment for planar targets of the present invention realizes automatic sand feeding and automatic spraying, which greatly improves the sandblasting efficiency from the original 20 minutes / piece to 3 minutes / piece.

[0019] 3. The sandblasting chamber of the automatic sandblasting equipment for planar targets of the present invention is a closed operation, eliminating the operational hazards for operators. During automatic sandblasting, operators will not be injured by sand particles sprayed out under high pressure.

[0020] 4. The automatic sandblasting method for planar targets of the present invention achieves full coverage sandblasting of planar targets in one pass through the cooperation of the swinging central sandblasting gun, the side sandblasting gun and the conveying device, while the sandblasting roughness is uniform, the sandblasting efficiency is high and the operation safety is high. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a partial internal structure diagram of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the central sandblasting unit of the present invention.

[0025] Figure 4 This is a schematic diagram of the side sandblasting unit of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the fixing base of the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of the middle connecting rod of the present invention.

[0028] Figure 7 This is a schematic diagram of the side fixing base of the present invention.

[0029] Figure 8 This is a partial structural schematic diagram of the target material of the present invention.

[0030] In the diagram: 10-Sandblasting platform, 11-Sandblasting chamber, 12-Target material, 13-Side side of planar target, 14-Surface of backplate, 15-Irregular surface, 16-Side side of backplate;

[0031] 20 - Central sandblasting unit, 21 - Central sandblasting gun, 22 - Central swing section, 23 - Central swing rod;

[0032] 30-Fixed base, 31-Middle rod connecting hole, 32-Middle connecting rod, 33-Middle connecting rod, 34-Middle base, 35-Base hole, 36-Middle gun connecting rod, 37-Swing rod connecting hole;

[0033] 40-Side sandblasting unit, 41-Side sandblasting gun, 42-Side swing rod, 43-Side fixed base, 44-Rotating part, 45-Side rod connecting hole, 46-Side connecting rod;

[0034] 50-Sand inlet, 51-Sand outlet, 52-Inclined recovery plate, 53-Sandblasting recovery chamber, 54-Conveying device, 55-Conveying roller. Detailed Implementation

[0035] The following are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] An automated sandblasting device for planar targets, such as Figures 1 to 8 As shown, the device includes a sandblasting chamber 11 and a sandblasting platform 10. The sandblasting chamber 11 is connected to the sandblasting platform 10. The sandblasting platform 10 is equipped with a conveying device 54 for moving the target material 12. A sandblasting device is installed inside the sandblasting chamber 11 and is located above the conveying device 54. The sandblasting device includes a central sandblasting unit 20 and a side sandblasting unit 40. The side sandblasting unit 40 is equipped with a side sandblasting gun 41, the nozzle of which faces the side of the target material 12. The central sandblasting unit 20 is equipped with a central sandblasting gun 21, the nozzle of which faces the surface of the target material 12. The surface includes the sputtering surface of the planar target and the surface 14 of the back plate (i.e., the side of the back plate on which the target material 12 is bound). At least the central sandblasting gun 21 is a swinging gun. The swinging direction of the central sandblasting gun 21 is perpendicular to the forward direction of the conveying device 54. The side sandblasting gun 41 is either fixed or swinging. When the side sandblasting gun 41 is oscillating, the side sandblasting gun 41 is oscillating along the thickness direction of the target material 12.

[0037] During the use of the target material 12, arcs are generated by protrusions such as burrs on the edges and corners of the target material 12. Therefore, it is required to sandblast the sides and non-sputtering areas of the target material 12 to remove burrs and protrusions caused by machining marks. Due to the irregularity of the shape and direction of the sandblasting area, the existing sandblasting process for the target material 12 is mainly done manually. Manual sandblasting results in large roughness deviations on the sandblasted surface due to uneven sandblasting movement speed, with roughness measurement results at different locations showing a deviation of Ra 2.0 μm. Manual sandblasting is inefficient, requiring 20 minutes per TFT target material 12 surface to be sandblasted. Manual sandblasting is also highly dangerous; even with protective equipment worn, there is still a risk of injury from the sand particles sprayed under high pressure.

[0038] The automatic sandblasting equipment of the present invention effectively improves worker safety by sandblasting a flat target within the sandblasting chamber 11. By adjusting the conveying speed of the conveyor 54, the sandblasting speed of the sandblasting device on the flat target is controlled, reducing the roughness deviation of the sandblasted surface and resulting in a more uniform sandblasting effect. By equipping the sandblasting chamber 11 with a central sandblasting gun 21 and side sandblasting guns 41, the side surfaces 13 and non-splashing areas of the flat target are all sandblasted by corresponding sandblasting guns, ensuring complete coverage of the sandblasted surface. Through the cooperation of the conveyor 54 and the sandblasting device, the flat target is automatically sandblasted, improving the efficiency and guidance of the sandblasting operation.

[0039] Specifically, before sandblasting, the sandblasting pressure of each side sandblasting gun 41 and the middle sandblasting gun 21 is set according to the sandblasting requirements of the flat target. The swing amplitude, swing speed, sandblasting time, and conveying speed of the conveying device 54 of the side sandblasting gun 41 and the middle sandblasting gun 21 are also set. The flat target is placed on the conveying device 54. A sandblasting inlet of the target material 12 is provided between the sandblasting chamber 11 and the conveying device 54. The conveying device 54 moves the flat target into the sandblasting chamber 11 through the sandblasting inlet of the target material 12 for sandblasting. After the flat target is sandblasted, it is transported out by the conveying device 54.

[0040] In a further technical solution, the central sandblasting unit 20 is provided with a central swing section 22, which drives and connects to the central sandblasting gun 21. The central swing section 22 includes a central swing rod 23 and a swing drive device. The central swing rod 23 is oscillatingly installed in the center of the sandblasting chamber 11, and the swing drive device drives and connects to the central swing rod 23. The central sandblasting gun 21 is installed on the central swing rod 23 and reciprocates along the width direction of the target material 12. The central swing rod 23 is driven to rotate reciprocally by the swing drive device, and the central sandblasting gun 21 is fixed to the central swing rod 23, thereby driving the central sandblasting gun 21 to reciprocate. Since the sandblasting area of ​​the target material 12 is large, setting the central sandblasting gun 21 to reciprocate expands the sandblasting range of the central sandblasting gun 21. The large-area sandblasting of the target material 12 can be completed by the swinging sandblasting of the central sandblasting gun 21, thereby improving the sandblasting efficiency. Meanwhile, the central sandblasting gun 21 oscillates during the sandblasting process, making the sandblasting force gentler and avoiding large local roughness deviations caused by continuous sandblasting at one position. This results in a more uniform sandblasting effect and effectively reduces roughness deviations. Because the central sandblasting gun 21 oscillates continuously during the sandblasting process, the angle between the central sandblasting gun 21 and the sandblasted surface of the target 12 constantly changes. The continuous oscillation of the central sandblasting gun 21, in conjunction with the movement of the conveying device 54, effectively ensures the uniformity of sandblasting in each sandblasting area and effectively prevents the problem of different sandblasting roughness caused by different sandblasting times at different sandblasting positions. In specific operation, the oscillation angle, number, and position of the central sandblasting gun 21 can be adjusted according to the actual size of the target 12 and the actual processing requirements.

[0041] In a further technical solution, the central swing rod 23 is provided with a fixed base 30, a central connecting rod 32, and a central gun connecting rod 36. The fixed base 30 is provided with a swing rod connecting hole 37 and a central rod connecting hole 31. The central swing rod 23 passes through the swing rod connecting hole 37, and the fixed base 30 is installed on the central swing rod 23. The central connecting rod 32 is provided with a central connecting rod 33 and a central base 34. One end of the central connecting rod 33 is installed on the central base 34, and the other end of the central connecting rod 33 is installed on the central rod connecting hole 31. The central base 34 is provided with a base hole 35, and one end of the central gun connecting rod 36 is installed on the base hole 35. The other end of the central gun connecting rod 36 is rotatably installed on the central sandblasting gun 21. The central sandblasting gun 21 is fixed to the central swing rod 23 by the fixed base 30, the central connecting rod 32, and the central gun connecting rod 36. Since the fixed base 30 is installed on the central swing rod 23 through the swing rod connection hole 37, the fixed base 30 can rotate along the central swing rod 23 before being locked, and at the same time, the fixed base 30 can move along the central swing rod 23. Therefore, the central sandblasting gun 21 determines its fixed position on the central swing rod 23 by the movement or rotation of the fixed base 30. The central connecting rod 33 is fixed to the central rod connection hole 31. The central connecting rod 33 can rotate in the central rod connection hole 31 before being locked. After the rotation angle of the central connecting rod 33 is determined, the central connecting rod 33 is locked and fixed in the central rod connection hole 31. At the same time, the distance between the central base 34 and the sandblasting surface of the planar target can be adjusted by adjusting the length of the central connecting rod 33 inserted into the central rod connection hole 31. After the connecting rod 36 is inserted into the base hole 35, before the base hole 35 locks the connecting rod 36, the connecting rod 36 can rotate within the base hole 35. The sandblasting angle of the central sandblasting gun 21 can be further adjusted via the connecting rod 36. Simultaneously, the distance between the central sandblasting gun 21 and the sandblasting surface of the flat target can be adjusted by adjusting the length of the connecting rod 36 inserted into the base hole 35. The central sandblasting gun 21 is rotatably mounted on one end of the connecting rod 36, and can rotate relative to the connecting rod 36 to further adjust the angle between the central sandblasting gun 21 and the sandblasting surface of the target 12. The sandblasting position and angle of the central sandblasting gun 21 can be adjusted via the fixing base 30, the central connecting rod 32, or the connecting rod 36, respectively. The distance between the central sandblasting gun 21 and the sandblasting surface of the flat target can be adjusted via the central connecting rod 32 and / or the connecting rod 36, respectively. The central sandblasting gun 21 offers multiple adjustment options for its swing amplitude, sandblasting position, sandblasting angle, and sandblasting distance. Operators can choose different adjustment methods to operate flexibly according to actual conditions, making the adjustment of the central sandblasting gun 21 more precise and the operation more convenient.

[0042] The sandblasting device is equipped with a side swing rod 42, which is fixed to the side of the sandblasting chamber 11. The side sandblasting gun 41 is mounted on the side swing rod 42. The side sandblasting gun 41 is used to sandblast the non-splashing area on the side of the target material 12. The side sandblasting gun 41 is fixed to the side swing rod 42. Since the sandblasting width of the non-splashing area on the side of the target material 12 is small, the side sandblasting gun 41 can be fixedly set. It only needs to be fixed to the side swing rod 42. While the side sandblasting gun 41 sandblasts the side of the target material 12, the conveying device 54 transports and moves the flat target, so that the side sandblasting gun 41 can complete the full sandblasting of the entire side of the flat target.

[0043] In a further technical solution, the side blasting unit 40 is provided with a side swinging part, which drives and connects to the side blasting gun 41. The side swinging part includes a side swinging rod and a swinging drive device. The side swinging rod is oscillatingly installed on one side of the blasting chamber 11, and the swinging drive device drives and connects to the side swinging rod. The side blasting gun 41 is installed on the side swinging rod and oscillates back and forth along the height direction of the target material 12. The side swinging part can be either fixed or oscillating. When the blasting range of the side blasting gun 41 is sufficient to cover the area on the side of the target material 12 that needs to be blasted, the side blasting gun 41 can be fixed. When the side blasting gun 41 is oscillating, the blasting effect is better. The side blasting gun 41 oscillates during the blasting process, making the blasting force gentler and avoiding continuous blasting at a certain position, which would cause large local blasting roughness deviations. The blasting effect is more uniform, effectively reducing blasting roughness deviations. Because the side blasting gun 41 swings continuously during the blasting process, the angle between the side blasting gun 41 and the blasting surface of the target 12 changes continuously. The continuous swinging of the side blasting gun 41 and the movement of the conveying device 54 work together to effectively ensure the uniformity of blasting in each blasting area on the side of the target 12, and effectively prevent the problem of different blasting roughness caused by different blasting times at different blasting positions.

[0044] Specifically, the side swing rod is provided with a side fixing base 43, which is provided with a rotating part 44 and a side connecting rod 46. The rotating part 44 is rotatably mounted on the side fixing base 43 and has a side rod connecting hole 45. One end of the side connecting rod 46 is installed in the side rod connecting hole 45, and the other end of the side connecting rod 46 is rotatably mounted on the side sandblasting gun 41. The side fixing base 43 is mounted on the side swing rod 42 and can move along the side swing rod 42. After the installation position is determined, it is fixed to the side swing rod 42, thereby adjusting the sandblasting position of the side sandblasting gun 41. The distance between the side sandblasting gun 41 and the side sandblasting surface of the planar target can be adjusted by rotating the rotating part 44 or by the length of the side connecting rod 46 inserted into the side rod connecting hole 45. More specifically, the side sandblasting gun 41 is hinged to one end of the side connecting rod 46. The side sandblasting gun 41 rotates relative to the side connecting rod 46, thereby adjusting the sandblasting angle between the side sandblasting gun 41 and the side sandblasting surface of the planar target. By moving and rotating, the sandblasting position, sandblasting angle, and sandblasting distance of the side sandblasting gun 41 can be adjusted in multiple dimensions. The adjustment of the side sandblasting gun 41 is convenient and flexible, making the sandblasting effect of the side sandblasting gun 41 on the side sandblasting surface of the target material 12 more precise.

[0045] The sandblasting chamber 11 is provided with a sand inlet 50, which has multiple sand outlets 51. A central sandblasting gun 21 or a side sandblasting gun 41 is connected to a corresponding sand outlet 51. Sand for sandblasting is stored in the sand inlet 50. The sand in the sand inlet 50 flows out of the sand outlets 51 through high-pressure suction. The side sandblasting gun 41 or the central sandblasting gun 21 is connected to the sand outlets 51 through sandblasting pipes, thereby allowing the sand to be ejected at high pressure from the side sandblasting gun 41 or the central sandblasting gun 21. Specifically, each sand outlet 51 is connected to a side sandblasting gun 41 or a central sandblasting gun 21.

[0046] The lower part of the sandblasting chamber 11 is provided with multiple inclined recovery plates 52, which surround to form a sandblasting recovery chamber 53. The lower sides of the inclined recovery plates 52 are all inclined towards the center of the sandblasting recovery chamber 53. The inclination of the lower sides of the inclined recovery plates 52 towards the center of the sandblasting recovery chamber 53 allows the sand after sandblasting to fall into the sandblasting recovery chamber 53 by its own weight. At the same time, because the inclined recovery plates 52 are set with a certain inclination angle, the falling sand slides along the inclination angle of the inclined recovery plates 52, thereby collecting the falling sand in the sandblasting recovery chamber 53, which facilitates the reuse of sand and avoids resource waste.

[0047] The central swing arm 23 is equipped with multiple central sandblasting guns 21, and the side swing arm 42 is equipped with multiple side sandblasting guns 41. The number of central sandblasting guns 21 or side sandblasting guns 41 can be adjusted according to actual production needs to enhance the sandblasting effect or make the sandblasted roughness more uniform. The sandblasting chamber 11 is equipped with a control unit, and each central sandblasting gun 21 and each side sandblasting gun 41 is connected to the control unit. The control unit is used to control sandblasting parameters such as sandblasting pressure, sand output time, and sand output quantity for each central sandblasting gun 21 or side sandblasting gun 41. The control unit has various control schemes for the central sandblasting guns 21 and side sandblasting guns 41, which can be adjusted according to actual production conditions. For example, the control unit can perform consistent control on all central sandblasting guns 21 or all side sandblasting guns 41; this control method is simple and easy to operate. Alternatively, the control unit can control each central sandblasting gun 21 and side sandblasting gun 41 separately. This control method allows for more precise and flexible control of the central sandblasting gun 21 or the side sandblasting gun 41.

[0048] The conveying device 54 is equipped with multiple conveying rollers 55 and a conveying control unit. The conveying control unit is connected to the conveying rollers 55, and the conveying rollers 55 are rotatably mounted on the conveying device 54. The conveying control unit uniformly controls all the conveying rollers 55, controlling their rotation speed so that all the conveying rollers 55 rotate at a set speed. This causes the planar target to move at a set speed, thereby controlling the sandblasting speed. Moving the conveying rollers 55 at a set speed or in a set manner makes the sandblasting effect more uniform. The conveying rollers 55 are used to convey the target material 12. Adjacent conveying rollers 55 are spaced apart, allowing fallen sand particles to fall into the recovery chamber through the gaps between the conveying rollers 55. Furthermore, the conveying rollers 55 are cylindrical, which makes it easier for fallen sand particles to fall into the recovery chamber promptly during rotation, preventing accumulation on or around the target material 12 and affecting the sandblasting effect. Preferably, the distance between adjacent conveyor rollers 55 is set within 100mm, so that the target material 12 moves more smoothly and the sandblasting effect is better.

[0049] The distance between the nozzles of the central sandblasting gun 21 and the side sandblasting gun 41 and the sandblasting surface of the target material 12 is set between 200mm and 250mm. Setting the sandblasting distance within this appropriate range ensures that the sandblasting pressure applied by the sandblasting guns to the sandblasting surface remains within a suitable range. If the sandblasting gun is too close to the sandblasting surface, the sandblasting pressure will be too high, causing significant compressive stress on the surface and potentially leading to deformation. If the sandblasting distance is too far, the sandblasting efficiency will be low. A suitable distance achieves both the required surface roughness and high sandblasting efficiency.

[0050] The angle between the central sandblasting gun 21 and the side sandblasting gun 41 and the corresponding target material 12 is set between 30° and 45°. If the sandblasting angle is too large, sand particles are easily embedded in the sandblasted surface, which also intensifies surface erosion and increases abrasion of the abrasive material. Using an appropriate sandblasting angle can reduce abrasive material loss and achieve a better sandblasting effect.

[0051] The automatic sandblasting equipment for planar targets of the present invention, through the swinging setting of the central sandblasting gun 21, makes the sandblasting area in the width direction of the target material 12 plate more uniform, and achieves full coverage of the sandblasting area in the width direction of the target material 12 plate. By combining the swinging setting of the central sandblasting gun 21 with the movement of the conveying device 54, the sandblasting effect of the entire sandblasting area of ​​the target material 12 plate is uniform, and the entire sandblasting area of ​​the target material 12 plate is fully covered. The combination of the central sandblasting gun 21, the side sandblasting gun 41 and the conveying device 54 achieves full coverage sandblasting of the target material 12, and in particular solves the sandblasting problem of irregular surfaces 15 in the target material 12. Some types of planar targets 12 have irregular surfaces 15 at their ends. These irregular surfaces 15 are not parallel to the plate surface or side surface of the target material 12, and the shape of the irregular surface 15 is also irregular. Since the central sandblasting gun 21 and the side sandblasting gun 41 are used in combination, the sandblasting of the irregular surface 15 can be fully covered. This enables fully automated sandblasting of various types of planar targets, avoiding repeated sandblasting with different faces and directions, significantly improving sandblasting efficiency and shortening process time.

[0052] An automated sandblasting method for planar targets, such as Figures 1 to 8 As shown, the target 12 is placed in front of the conveying device 54, and the non-blasting area is covered with tape to expose the surface to be blasted. The target 12 is placed on the conveying device 54, which moves along the length of the target 12. The nozzle of the central sandblasting gun 21 faces the surface of the target 12, and the nozzle of the side sandblasting gun 41 faces the side of the target 12. Among the central sandblasting gun 21 and the side sandblasting gun 41, the central sandblasting gun 21 swings back and forth along the width of the target 12. When the diameter of the blasting range of the side sandblasting gun 41 is greater than the thickness of the target 12, the side sandblasting gun 41 is fixed or swings. When the diameter of the blasting range of the side sandblasting gun 41 is less than the thickness of the target 12, the side sandblasting gun 41 swings back and forth along the thickness of the target 12. The side surfaces of the target 12 include the side surface 13 of the planar target and the side surface 16 of the back plate. The plate surface of the target 12 includes the surface 14 of the back plate and the irregular surface 15 of the planar target. The surfaces of the target 12 that need to be sandblasted include the side surfaces of the target 12, the plate surface of the target 12, and the irregular surface 15 of the planar target. The sandblasting method for the planar target 12 of the present invention, through the combined use of the central sandblasting gun 21, the side sandblasting gun 41, and the conveying device 54, achieves fully automatic sandblasting of the planar target 12 in one pass, resulting in good uniformity of sandblasting effect and effectively improving sandblasting efficiency.

[0053] Specifically, the sandblasting method for planar targets includes the following steps:

[0054] a) Preparation steps: Place the target 12 on the conveying device 54, with the nozzle of the central sandblasting gun 21 facing the surface of the target 12 and the nozzle of the side sandblasting gun 41 facing the side of the target 12. Place the target 12 flat on the conveying roller 55 of the conveying device 54, and move the target 12 as the conveying roller 55 rotates. The sandblasted surface of the target 12 faces the central sandblasting gun 21, so that the central sandblasting gun 21 sandblasts the surface of the target 12. The side of the target 12 faces the side sandblasting gun 41, so that the side sandblasting gun 41 sandblasts the side of the target 12.

[0055] (b) In the sandblasting step, the conveying device 54 moves the target material 12. Among the central sandblasting gun 21 and the side sandblasting gun 41, at least the central sandblasting gun 21 is oscillating. The central sandblasting gun 21 oscillates back and forth along the width direction of the target material 12. The conveying device 54, the central sandblasting gun 21, and the side sandblasting gun 41 cooperate in a set manner, including at least one or two. Since the sandblasting range of the target material 12 is large, the reciprocating oscillation of the central sandblasting gun 21 along the width direction of the target material 12 can cover the entire target material 12 surface with sandblasting. At the same time, since the sandblasting force is the greatest in the middle of the sandblasting gun and gradually decreases outward from the middle, sandblasting at the same angle throughout the sandblasting will result in a large roughness in the middle area of ​​the sandblasting range and a gradually decreasing roughness in the outer edge area of ​​the sandblasting range, resulting in an uneven sandblasting effect on the target material 12. In this invention, because the central sandblasting gun 21 swings continuously during the sandblasting process, the angle between the central sandblasting gun 21 and the surface of the target material 12 changes continuously, resulting in a gentler sandblasting force and a more uniform sandblasting effect.

[0056] The sandblasting range refers to the effective processing area formed by the sand sprayed from the sandblasting gun falling into the product.

[0057] In Method 1, the conveying device 54 is equipped with predetermined target material 12 advancing units. Among the central sandblasting gun 21 and the side sandblasting gun 41, the one with the smaller diameter of the sandblasting range is selected as a target material 12 advancing unit. After the conveying device 54 moves one target material 12 advancing unit and pauses, the central sandblasting gun 21 swings from one side of the target material 12's width direction to the other side, thus completing sandblasting across the width of the target material 12, forming a sandblasted area on the surface of the target material 12 in the width direction. When the diameter of the sandblasting range of the side sandblasting gun 41 is smaller than the thickness of the target material 12, the side sandblasting gun 41 swings from one side of the target material 12's thickness direction to the other side, thus completing sandblasting across the thickness of the target material 12. Alternatively, when the diameter of the sandblasting range of the side sandblasting gun 41 is larger than the thickness of the target material 12, the side sandblasting gun 41 is fixedly set in a sandblasting configuration. At a fixed time, the sandblasting effect formed by the side sandblasting gun 41 on the side of the target 12 is the same as the sandblasting effect formed by the middle sandblasting gun 21 on the surface of the target 12. That is, the swing distance of the middle sandblasting gun 21 is set to m and the time taken is t. Then, the sandblasting time of the side sandblasting gun 41 when it is fixed is set to t / m, so that a sandblasting area in the thickness direction of the target 12 is formed on the side of the target 12. After the middle sandblasting gun 21 and the side sandblasting gun 41 have completed the sandblasting of the width and thickness of the target 12, the conveying device 54 moves another target 12 forward unit in the forward direction of the target 12. The conveying device 54 moves, and the middle sandblasting gun 21 and the side sandblasting gun 41 alternate in this manner until the target 12 is fully sandblasted. Preferably, the sandblasting range of the side sandblasting gun 41 and the middle sandblasting gun 21 is the same. By swinging the central sandblasting gun 21 from one side of the target 12 in the width direction to the other, while simultaneously swinging the side sandblasting gun 41 from one side of the target 12 in the thickness direction to the other, or by fixing the sandblasting time of the side sandblasting gun 41, the surface and sides of the target 12 in one advancing unit area are fully covered by sandblasting. After sandblasting, the target 12 is moved forward one unit by the conveying device 54 for sandblasting, and this process is repeated alternately to complete the full sandblasting of the entire target 12. In the first method of sandblasting a planar target 12, the target 12 is divided into several sandblasting areas for advancing units. Through the combination of the swinging sandblasting of the central sandblasting gun 21 and the side sandblasting gun 41, and the conveying device 54 moving the target 12, a one-time fully automatic full-coverage sandblasting of the target 12 is achieved. The first method of sandblasting a planar target 12 can effectively improve sandblasting efficiency, shorten process time, and especially achieve good sandblasting uniformity.

[0058] Method 2: The time required for the central sandblasting gun 21 to swing from one side of the target 12 width to the other side of the target 12 width is set as t, and the distance the central sandblasting gun 21 swings from one side of the target 12 width to the other side of the target 12 width is set as m, where m is greater than the width of the target 12. The diameter of the sandblasting range of the central sandblasting gun 21 is set as n, and the moving speed of the central sandblasting gun 21 is m / t. The moving speed of the conveying device 54 is less than or equal to n / 2t. When the side sandblasting gun 41 is set to swing, the swing speed of the side sandblasting gun 41 is set to be equal to the swing speed of the central sandblasting gun 21. When the side sandblasting gun 41 is set to fixed, the sandblasting time of the side sandblasting gun 41 is t / m for every n moves of the conveying device 54. The conveying device 54 moves at a constant speed until the entire target 12 is sandblasted. Preferably, the sandblasting range of the side sandblasting gun 41 is the same as that of the middle sandblasting gun 21, and the swing range of the side sandblasting gun 41 is equal to that of the middle sandblasting gun 21, resulting in the most uniform roughness of the sandblasting effect. In the second method of sandblasting the planar target 12, the conveying device 54 moves at a set speed. Since the middle sandblasting gun 21 and the side sandblasting gun 41 have certain sandblasting ranges, the conveying device 54 moves the target 12 continuously at a set speed. The middle sandblasting gun 21 swings at a set speed, and the side sandblasting gun 41 coordinates with it in a set manner, thereby achieving one-time fully automatic, complete coverage sandblasting of the target 12. The second method of sandblasting the planar target 12 provides good sandblasting uniformity and effectively improves sandblasting efficiency while shortening process time.

[0059] The target 12 includes a back plate and a flat target, which is attached to the back plate. An irregular surface 15 is provided at the end of the flat target. In step b), the irregular surface 15 is sandblasted using a central sandblasting gun 21 and side sandblasting guns 41. In some types of target 12, the flat target has an irregular surface 15 at its end. This irregular surface 15 is not parallel to the surface or side of the target 12, and its shape is also unconventional. Sandblasting the irregular surface 15 of the target 12 creates a surface with adsorption capacity, causing atoms that do not follow a predetermined trajectory to be adsorbed onto the irregular surface 15, preventing them from falling off again. The combined sandblasting range of the oscillating central sandblasting gun 21 and the side sandblasting guns 41 can cover a sandblasting surface with an angle from 0° to 180°, meaning that both the surface and side of the target 12 can be fully covered. If the oscillating central sandblasting gun 21 cannot fully cover the irregular surface 15, the side sandblasting gun 41 on the corresponding side of the irregular surface 15 can supplement the sandblasting of the un-sandblasted areas of the irregular surface 15. Alternatively, if the side sandblasting gun 41 on the corresponding side of the irregular surface 15 cannot fully cover the irregular surface 15, the oscillating central sandblasting gun 21 can supplement the sandblasting of the un-sandblasted areas of the irregular surface 15. Combined with the moving target 12 by the conveying device 54, this achieves full coverage sandblasting of the irregular surface 15. Because the central sandblasting gun 21 and the side sandblasting gun 41 are used in combination, they can fully cover the irregular surface 15, thus solving the problem of fully covering the sandblasting of various types of planar target 12, achieving fully automatic sandblasting, avoiding repeated sandblasting with changing surfaces and directions, significantly improving sandblasting efficiency, and shortening process time.

[0060] The automatic sandblasting method for the planar target 12 of the present invention increases the number of central sandblasting guns 21 or side sandblasting guns 41 according to actual sandblasting requirements.

[0061]

[0062] Table 1.1 compares the sandblasting effects of the automatic sandblasting equipment, the automatic sandblasting process, and manual sandblasting according to the present invention.

[0063] Table 1.1 shows “Automatic Sandblasting Method of the Invention, Mode 1”, which is the automatic sandblasting method of the present invention. In step b), mode 1 is selected to process the target material 12.

[0064] The “Automatic Sandblasting Method of the Invention, Mode Two” in Table 1.1 refers to the automatic sandblasting method of the present invention, in which mode two is selected to process the target material 12 in the sandblasting step b).

[0065] As can be seen from the data in Table 1.1, the automatic sandblasting equipment and method of the present invention can perform full-coverage sandblasting of the target material 12, achieving a sandblasting coverage rate of 100%, while maintaining high sandblasting efficiency and low roughness deviation. The automatic sandblasting method of the present invention controls the sand used within the sandblasting chamber, effectively preventing sand particle splashing during the sandblasting process, making the sandblasting operation safer.

[0066] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An automatic sandblasting method for a planar target, characterized in that: The sandblasting method of the planar target material comprises the following steps: a) a preparation step, placing the target material (12) on a conveying device (54), the conveying device (54) moving along the length direction of the target material (12), the muzzle of the middle sandblasting gun (21) facing the plate surface of the target material (12), and the muzzle of the side sandblasting gun (41) facing the side of the target material (12), b) a sandblasting step, wherein the transport device (54) carries the target material (12) to move, the middle sandblasting guns (21) are all swingably arranged, the middle sandblasting guns (21) swing back and forth along the width direction of the target material (12), and the transport device (54), the middle sandblasting gun (21) and the side sandblasting guns (41) cooperate in a set manner, wherein at least the first manner or the second manner is included, Method 1: The transport device (54) is provided with a set target material (12) advancing unit, and the one with the smaller diameter of the sandblasting range is selected from the middle sandblasting gun (21) and the side sandblasting gun (41) as a target material (12) advancing unit. After the transport device (54) moves each target material (12) advancing unit and pauses, the middle sandblasting gun (21) swings from one side of the target material (12) width direction to the other side of the target material (12) width, thereby completing a target material (12) width sandblasting, so that a target material (12) width sandblasting area is formed on the plate surface of the target material (12) in the target material (12) width direction. When the diameter of the sandblasting range of the side sandblasting gun (41) is smaller than the thickness of the target material (12), the side sandblasting gun (41) swings from one side of the target material (12) thickness direction to the target material (12) to blast. The other side of the target material (12) thickness is sandblasted to complete a target material (12) thickness, or when the diameter of the sandblasting range of the side sandblasting gun (41) is larger than the thickness of the target material (12), the side sandblasting gun (41) is fixedly set to set the sandblasting setting time, so that a sandblasting area in the target material (12) thickness direction is formed on the side of the target material (12), and after the middle sandblasting gun (21) and the side sandblasting gun (41) have completed a target material (12) width sandblasting and a target material (12) thickness sandblasting, the conveying device (54) is moved in the target material (12) forward direction by one target material (12) forward unit, and the conveying device (54) moves, the middle sandblasting gun (21) and the side sandblasting gun (41) are alternately performed in this manner until the target material (12) is fully sandblasted; Method 2: The time required for the middle sandblasting gun (21) to swing from one side of the width of the target material (12) to the other side of the width of the target material (12) is set to t, and the distance the middle sandblasting gun (21) swings from one side of the width of the target material (12) to the other side of the width of the target material (12) is set to m, where m is greater than the width of the target material (12). The diameter of the sandblasting range of the middle sandblasting gun (21) is set to n, and the moving speed of the middle sandblasting gun (21) is m / t. The conveying device The moving speed of (54) is less than or equal to n / 2t. When the side sandblasting gun (41) is in a swinging setting, the swinging speed setting of the side sandblasting gun (41) is equal to the swinging speed of the middle sandblasting gun (21). When the side sandblasting gun (41) is in a fixed setting, the side sandblasting gun (41) moves n times on the conveying device (54), and the sandblasting time of the side sandblasting gun (41) is t / m. The conveying device (54) moves at a constant speed until the target material (12) is fully sandblasted.

2. The automatic sandblasting method for a planar target according to claim 1, characterized in that: The target material (12) comprises a back plate and a plane target, the plane target is bound to the back plate, an irregular surface (15) is provided at the end of the plane target, and in the b) sandblasting step, the irregular surface (15) is sandblasted by a middle sandblasting gun (21) and a side sandblasting gun (41) respectively.

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