A metal workpiece sand blasting device for machining

Abstract

The utility model relates to mechanical processing technical field discloses a kind of metal workpiece sand blasting devices for machining, including processing box, and the upper end of processing box is fixedly installed with air pump and sand storage tank, and the input end of air pump is connected with sand storage tank, and the output end of air pump is fixedly installed with conveying pipe, and the outer surface of conveying pipe is sleeved with heating electric wire, and the outer surface of heating electric wire is equipped with heat insulation tube, and heat insulation tube is fixedly installed on the outer surface of conveying pipe, and the upper end of heat insulation tube is fixedly installed with sleeve pipe, and the inside lateral wall of sleeve pipe is fixedly installed with fan, technical effect is to solve sand blasting process pain point under low temperature environment, while, low cost, high reliability and strong adaptability are considered, efficient practical technical scheme is provided for metal workpiece sand blasting pretreatment.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a metal workpiece sandblasting device for machining. Background Technology

[0002] In the field of machining, metal workpiece sandblasting equipment uses compressed air to drive abrasives to be ejected at high speed through a sandblasting pipe. The kinetic energy of the abrasives impacts the surface of the workpiece, achieving pretreatment or strengthening functions such as rust removal, oxide scale removal, surface roughening, and burr removal. It is a key process equipment to ensure the quality of subsequent coating, welding, and assembly of workpieces.

[0003] In a sandblasting device for metal workpieces used in machining, the sandblasting delivery pipe is the core channel connecting the abrasive storage bin and the spray gun. Inside, compressed air drives abrasives such as quartz sand and corundum to flow at high speed. Traditional delivery pipes are mostly exposed metal pipes or wear-resistant rubber pipes. In low-temperature and high-humidity environments, trace amounts of moisture in the compressed air easily condense on the pipe wall after contacting the abrasive, causing abrasive particles to stick together and form clumps. The brittleness of abrasives such as corundum and steel shot is significantly increased. When flowing through the delivery pipe, they are easily broken due to particle collision and pipe wall friction, generating too much ultrafine dust. After the low-temperature abrasive impacts the workpiece, the surface temperature of the workpiece is easily dropped sharply, causing water vapor in the air to condense on the surface and form a water film. These are some of the technical pain points. Therefore, we propose a sandblasting device for metal workpieces used in machining. Utility Model Content

[0004] This utility model provides the following technical solution: a metal workpiece sandblasting device for machining, comprising a processing box, an air pump and a sand storage tank fixedly installed at the upper end of the processing box, the input end of the air pump being connected to the sand storage tank, a conveying pipe fixedly installed at the output end of the air pump, a heating wire sleeved on the outer surface of the conveying pipe, a heat insulation tube provided on the outer surface of the heating wire, the heat insulation tube being fixedly installed on the outer surface of the conveying pipe, a sleeve fixedly installed at the upper end of the heat insulation tube, a fan fixedly installed on the inner side wall of the sleeve, an air outlet through the bottom end of the heat insulation tube, one end of the conveying pipe extending into the interior of the processing box and fixedly installed with a sandblasting component, a workpiece support structure and a collection structure provided inside the processing box, and a box door provided on the side end of the processing box.

[0005] Preferably, the workpiece support structure includes a hydraulic cylinder, which is fixedly installed at the bottom of the processing box. A support base is rotatably installed at the telescopic end of the hydraulic cylinder. A lower pressure plate is provided directly above the support base. A rotating rod is fixedly installed at the upper end of the lower pressure plate. A drive structure is provided at the upper end of the rotating rod.

[0006] Preferably, the drive structure includes a protective box, which is fixedly installed inside the upper part of the processing box. The rotating rod is rotatably installed inside the upper part of the protective box. A vertically downward rotating motor is fixedly installed inside the upper part of the protective box. Gears are fixedly installed on the output end of the rotating motor and the outer surface of the rotating rod, and the two gears are meshed together.

[0007] Preferably, the collection structure includes an inclined groove, which is formed at the bottom of the inner side of the processing box. The recess of the inclined groove has multiple through holes. Two L-shaped brackets are fixedly installed at the bottom of the processing box and are arranged opposite each other. A collection box is slidably connected between the two L-shaped brackets.

[0008] Preferably, a dustproof net is fixedly installed on the upper end of the sleeve and the inner side wall of the air outlet, and a fixing rod is fixedly installed on the upper end of the sandblasting part, and the fixing rod is fixedly installed on the upper inner end of the processing box.

[0009] Preferably, a protective cover is fixedly installed on the outer surface of the support base, and the longitudinal section of the protective cover is trapezoidal.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention utilizes a heating wire coiled around the outer wall of a sandblasting delivery pipe. Through close-range conduction heating and spiral uniform heat distribution, heat is evenly transferred to the inside of the pipe via metal conduction, maintaining a stable temperature within the pipe. This rapidly evaporates moisture from the abrasive and compressed air, preventing the formation of liquid bridges between particles. While addressing the pain points of sandblasting processes in low-temperature environments, this invention also achieves low cost, high reliability, and strong adaptability, providing an efficient and practical technical solution for the pretreatment of metal workpieces by sandblasting. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of the first component of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the second component of this utility model;

[0016] Figure 5 For the present utility model Figure 4 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Processing box; 2. Hydraulic cylinder; 3. Support base; 4. Lower pressure plate; 5. Rotating rod; 6. Air pump; 7. Sand storage tank; 8. Conveying pipe; 9. Heat insulation pipe; 10. Heating wire; 11. Air outlet; 12. Sleeve; 13. Fan; 14. Dustproof net; 15. Sandblasting part; 16. Fixing rod; 17. Box door; 18. L-shaped bracket; 19. Collection box; 20. Inclined groove; 21. Through hole; 22. Protective cover; 23. Rotating motor; 24. Gear; 25. Protective box.

[0018] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-5 As shown, this utility model provides a technical solution: a metal workpiece sandblasting device for machining, including a processing box 1. An air pump 6 and a sand storage tank 7 are fixedly installed at the upper end of the processing box 1. The input end of the air pump 6 is connected to the sand storage tank 7. A conveying pipe 8 is fixedly installed at the output end of the air pump 6. A heating wire 10 is sleeved on the outer surface of the conveying pipe 8. A heat insulation pipe 9 is provided on the outer surface of the heating wire 10. The heat insulation pipe 9 is fixedly installed on the outer surface of the conveying pipe 8. A sleeve 12 is fixedly installed at the upper end of the heat insulation pipe 9. A fan 13 is fixedly installed on the inner side wall of the sleeve 12. An air outlet 11 is opened at the bottom end of the heat insulation pipe 9 in a through-type configuration. One end of the conveying pipe 8 extends into the interior of the processing box 1 and is fixedly installed with a sandblasting component 15. The interior of the processing box 1 is provided with a workpiece support structure and a collection structure. A box door 17 is provided on the side end of the processing box 1.

[0021] In an optional embodiment: the workpiece support structure includes a hydraulic cylinder 2, which is fixedly installed at the bottom of the processing box 1. A support base 3 is rotatably installed at the telescopic end of the hydraulic cylinder 2. A lower pressure plate 4 is provided directly above the support base 3. A rotating rod 5 is fixedly installed at the upper end of the lower pressure plate 4. A drive structure is provided at the upper end of the rotating rod 5.

[0022] It should be noted that the workpiece is supported and clamped.

[0023] In an optional embodiment: the drive structure includes a protective box 25, which is fixedly installed inside the upper part of the processing box 1. The rotating rod 5 is rotatably installed inside the upper part of the protective box 25. A vertically downward rotating motor 23 is fixedly installed inside the upper part of the protective box 25. Gears 24 are fixedly installed on the output end of the rotating motor 23 and the outer surface of the rotating rod 5. The two gears 24 are meshed and connected.

[0024] It should be noted that the output end of the rotating motor 23 rotates, causing the corresponding gear 24 to rotate, which in turn causes another gear 24 that meshes with it to rotate, thereby causing the rotating rod 5 to rotate. This allows the workpiece to rotate, ensuring that the outer surface of the workpiece can be sandblasted.

[0025] In an optional embodiment: the collection structure includes an inclined groove 20, which is opened at the bottom of the inside of the processing box 1. The inclined groove 20 has a plurality of through holes 21 that are arranged in a through manner. Two L-shaped brackets 18 arranged opposite each other are fixedly installed at the bottom of the processing box 1. A collection box 19 is slidably connected between the two L-shaped brackets 18.

[0026] It should be noted that the sprayed sand flows through the inclined groove 20 to the bottom of the depression, and then through the through hole 21 to the collection box 19 below, which facilitates the collection of sand.

[0027] In an optional embodiment: a dustproof net 14 is fixedly installed on the upper end of the sleeve 12 and the inner side wall of the air outlet 11, and a fixing rod 16 is fixedly installed on the upper end of the sandblasting part 15. The fixing rod 16 is fixedly installed on the upper end of the inside of the processing box 1.

[0028] It should be noted that external dust should be prevented from entering the heat insulation tube 9, as prolonged exposure can affect the heat transfer of the heating wire 10.

[0029] In an optional embodiment: a protective cover 22 is fixedly installed on the outer surface of the support base 3, and the longitudinal section of the protective cover 22 is trapezoidal.

[0030] It should be noted that the hydraulic cylinder 2 is designed to protect it, preventing the sprayed sand from accumulating on its outer surface and affecting its operation. Additionally, the outer wall of the hydraulic cylinder 2 is designed to be inclined, which facilitates the downward flow of the sand.

[0031] In practical use, the working principle of this utility model is as follows:

[0032] Before sandblasting, the power supply to the heating wire 10 and the fan 13 are both connected. The heating wire 10 is spirally coiled around the outer wall of the conveying pipe 8. After the heating wire 10 is energized, its temperature gradually rises, and heat is transferred to the inside of the conveying pipe 8 through heat exchange. After the fan 13 is started, it delivers gas into the heat insulation pipe 9, forming a forced airflow. The airflow will carry away the heat on the surface of the heating wire 10, and the heat will be transferred to the outer wall of the conveying pipe 8 through hadron convection, increasing the speed of heat transfer. The circular workpiece to be processed is placed vertically on the upper end of the support base 3, and then the hydraulic cylinder 2 lifts the support base 3 upward, so that the upper end of the workpiece is close to the bottom end of the lower pressure plate 4, thereby fixing the workpiece. During the sandblasting process, the rotating motor 23 is started, and the output end of the rotating motor 23 rotates, which drives the corresponding gear 24 to rotate, thereby causing another gear 24 to rotate, which in turn causes the rotating rod 5 to rotate. This allows the workpiece to rotate, ensuring that the outer surface of the workpiece can be sandblasted.

[0033] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A metal workpiece sandblasting device for machining, comprising a processing box (1), characterized in that: An air pump (6) and a sand storage tank (7) are fixedly installed at the upper end of the processing box (1). The input end of the air pump (6) is connected to the sand storage tank (7). A conveying pipe (8) is fixedly installed at the output end of the air pump (6). A heating wire (10) is sleeved on the outer surface of the conveying pipe (8). A heat insulation pipe (9) is provided on the outer surface of the heating wire (10). The heat insulation pipe (9) is fixedly installed on the outer surface of the conveying pipe (8). A sleeve (12) is fixedly installed at the upper end of the heat insulation pipe (9). A fan (13) is fixedly installed on the inner side wall of the sleeve (12). An air outlet (11) is opened at the bottom end of the heat insulation pipe (9). One end of the conveying pipe (8) extends into the interior of the processing box (1) and is fixedly installed with a sandblasting component (15). The interior of the processing box (1) is provided with a workpiece support structure and a collection structure. A box door (17) is provided on the side end of the processing box (1).

2. The metal workpiece sandblasting device for machining according to claim 1, characterized in that: The workpiece support structure includes a hydraulic cylinder (2), which is fixedly installed at the bottom of the processing box (1). A support base (3) is rotatably installed at the telescopic end of the hydraulic cylinder (2). A lower pressure plate (4) is provided directly above the support base (3). A rotating rod (5) is fixedly installed at the upper end of the lower pressure plate (4). A drive structure is provided at the upper end of the rotating rod (5).

3. The metal workpiece sandblasting device for machining according to claim 2, characterized in that: The drive structure includes a protective box (25), which is fixedly installed inside the upper part of the processing box (1). The rotating rod (5) is rotatably installed inside the upper part of the protective box (25). A rotating motor (23) arranged vertically downward is fixedly installed inside the upper part of the protective box (25). Gears (24) are fixedly installed on the output end of the rotating motor (23) and the outer surface of the rotating rod (5). The two gears (24) are meshed and connected.

4. The metal workpiece sandblasting device for machining according to claim 1, characterized in that: The collection structure includes an inclined groove (20), which is opened at the bottom of the inside of the processing box (1). The recess of the inclined groove (20) is provided with a plurality of through holes (21) arranged in a through manner. Two L-shaped brackets (18) arranged opposite each other are fixedly installed at the bottom of the processing box (1). A collection box (19) is slidably connected between the two L-shaped brackets (18).

5. The metal workpiece sandblasting device for machining according to claim 1, characterized in that: Dustproof nets (14) are fixedly installed on the upper end of the sleeve (12) and the inner side wall of the air outlet (11). A fixing rod (16) is fixedly installed on the upper end of the sandblasting part (15). The fixing rod (16) is fixedly installed on the upper inner end of the processing box (1).

6. The metal workpiece sandblasting device for machining according to claim 2, characterized in that: A protective cover (22) is fixedly installed on the outer surface of the support base (3), and the longitudinal section of the protective cover (22) is trapezoidal.

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