AU2020101123A4

AU2020101123A4 - Automatic Spraying Device

Info

Publication number: AU2020101123A4
Application number: AU2020101123A
Authority: AU
Inventors: Quanping SUN; Hongliang Wu
Original assignee: Huaiyin Institute of Technology
Current assignee: Huaiyin Institute of Technology
Priority date: 2020-06-25
Filing date: 2020-06-25
Publication date: 2020-08-06
Anticipated expiration: 2028-06-25

Abstract

The invention discloses an automatic sand blasting device, which comprises a rotating worktable and a pneumatic sand blasting mechanism which are mutually matched. The rotary worktable rotates the workpiece on it, and the pneumatic sand blasting mechanism enables the nozzle to move up and down, back and forth and the plane to rotate at 90 degrees according to the change of the position and angle of the workpiece, while realizing sand blasting. The invention is intelligent and self-adaptive, completes one-time complete sand blasting of processed parts, improves sand blasting efficiency, reduces labor intensity of workers, prevents workers from working in harsh environments, and has high automation degree, sensitive and fast control, and high safety and reliability. Drawings of Descriptions A 4 5 6 7 10 11 12 \15 Fiur 15 Figure 2 1/3

Description

Drawings of Descriptions

A 4 5 6 7

10 11

12

\15

Fiur 15

Figure 2 1/3

Descriptions

Automatic Spraying Device

Technical Field The invention relates to a sand blasting device, in particular to an automatic sand blasting device.

Background Technology Valve parts are used for Christmas trees and wellhead devices, and the valve surface needs to have excellent performance. The automatic sand blasting device is a device that automatically completes sand blasting for processing parts such as valves. Compressed air is used as power to form a high-speed spray beam, which sprays the spray material onto the surface of the workpiece to be treated at a high speed. The surface of the substrate is cleaned and roughened by the impact of the high-speed sand flow, so that the outer surface or shape of the workpiece changes. Due to the impact and cutting action of abrasive on the surface of the workpiece, the surface of the workpiece obtains certain cleanliness and different roughness, and the performance of the workpiece surface is improved. Therefore, the fatigue resistance of the workpiece is improved, the adhesion between the workpiece and the coating is increased, the durability of the coating is prolonged, and the leveling and decoration of the coating are also facilitated.

The current sand blasting work is mostly manual sand blasting, which is very harmful to human body and has low efficiency, complicated clamping and inconvenient positioning. Fully automatic sandblasting machine and mechanical arm sandblasting machine will definitely be the first choice for various manufacturers to research and develop or introduce, because these products have overwhelming advantages in market competition. In combination with the environmental protection and low carbon, low power consumption, high environmental protection and wet sand blasting technologies that are increasingly concerned around the world, they will be developed and popularized more rapidly in the future. At present, the domestic demand for intelligent and high-efficiency medium-grade and high-grade sandblasting machines is relatively large, and the domestic industry has a good momentum of development and there is a great demand for these equipment.

Summary of the Invention The invention aims to: The invention provides an automatic sand blasting device, which is intelligent and self-adaptive, can complete one-time complete sand blasting of processed parts, improves the sand blasting efficiency, reduces the labor intensity of workers, prevents workers from working in harsh environments, and has high automation degree, sensitive and fast control, and high safety and reliability.

The technical solution of the invention is as follows: The automatic sand blasting device comprises a rotating worktable and a pneumatic sand blasting mechanism which are mutually matched. The pneumatic sand blasting mechanism consists of a No.1 pneumatic cylinder, an L-shaped fixing plate, a No.2 pneumatic cylinder, a connecting rod, a guide rail and a sand blasting device, wherein a roller is arranged below the bottom plate of the L-shaped fixing plate;

Descriptions

a guide rail is vertically arranged above the bottom plate of the L-shaped fixing plate; the cylinder rod of the No.1 pneumatic cylinder is connected to the side plate of the L-shaped fixing plate; the No.2 pneumatic cylinder is arranged on the side plate of the L-shaped fixing plate; one end of the two connecting rods is arranged on the cylinder rod of the No.2 pneumatic cylinder together through a connecting block; the other ends of the two connecting rods are respectively provided with a guide block; the guide block is arranged on the guide rail; and the sand blasting device is The rotary worktable comprises a protection boss, a cushion table, a T-shaped worktable, an air cylinder, a frame and a speed reducer, wherein the output shaft of the speed reducer is connected with the platform column of the T-shaped worktable through a coupling; the table surface of the T-shaped worktable is positioned on the top surface of the frame through a rolling bearing; the cushion table is clamped in the center of the table surface of the T-shaped worktable; the air cylinder is arranged in the platform column of the T-shaped worktable; and the top end of the air rod of the air cylinder is provided with a protection boss through threads.

The protection boss comprises steel balls, springs, a protection boss body and bolts, the top surface of the protection boss body is rounded, and three groups of steel balls and springs are installed in the protection boss body at 120° degrees through the bolts.

The sandblasting device comprises a No.3 pneumatic cylinder, a nozzle and a mounting plate, wherein the No.3 pneumatic cylinder and the mounting plate are fixed on a guide block; a piston rod of the No.3 pneumatic cylinder is connected with a tail positioning rod of the nozzle by threads; and a middle positioning rod of the nozzle is fixed with the mounting plate by bolts.

The invention has the following advantages: 1. The rotation of the T-shaped worktable is controlled by a worm gear reducer, which can effectively prevent the worktable from reversing.

2. According to the distance between the nozzle and the parts, the No.1 pneumatic cylinder, the No.2 pneumatic cylinder and the No.3 pneumatic cylinder are used to control the up-down and back-and-forth movement of the nozzle and the rotation at a certain angle in the vertical direction.

3. When the sandblasting device works, the working surface rotates to drive the parts to rotate. The nozzles are used to carry out sandblasting in one horizontal direction first. Then, according to the distance between the parts and the nozzles when rotating, the pneumatic cylinder is used to control the position and angle of the nozzles and the parts when sandblasting in the next horizontal direction, and so on. The two symmetrical nozzles move to the center of the parts at the same time to realize complete sandblasting of the parts from the upper side to the middle.

4. When the sandblasting device works, according to the different sizes of the parts, select the appropriate cushion table to ensure that the nozzle can spray to the bottom of the parts when the sandblasting device works and avoid collision with the workbench.

Descriptions

5. According to the size of the hole diameter of valve parts, select the appropriate protection boss to make the inner hole of the part contact with the steel ball of the boss, and use the spring inside the steel ball to ensure that the inner hole of the part is not damaged.

6. When the sandblasting device works, the position of the nozzle is ensured to be positioned in the horizontal direction required for sandblasting of valve parts. Within the effective sandblasting range of the nozzle, the nozzle does not collide with parts and the workbench. When the valve parts rotate, the position of the parts when subjected to sandblasting force is ensured to remain unchanged, and the inner hole of the valve parts is not damaged.

7. According to the invention, the loading trolley is utilized to send valve parts to the workbench, so that the height of the workbench can meet the height reached by the trolley, and the pneumatic cylinder can be used to move the protection boss down to the inside of the workbench when sand blasting of the parts is completed, so that the loading and unloading of the valve parts are not influenced.

8. Two nozzles are used for sand blasting at the same time, and one-time sand blasting is completed, thus reducing the labor intensity of operators and improving the production efficiency.

9. According to the invention, the nozzle is controlled to rotate at a certain angle through the pneumatic cylinder, so that sand blasting of some corners can be realized, and uniform sand blasting of valve parts is ensured.

10. The protection boss uses steel balls and springs to protect the inner holes of valve parts, ensuring the integrity and parameter requirements of the valve parts after sand blasting.

11. The No.1 pneumatic cylinder drives the L-shaped fixing plate to control the symmetrical nozzle devices to move forward and backward. The two nozzle devices are in symmetrical relationship with the piston rod of the No.2 pneumatic cylinder. There is a small No.3 pneumatic cylinder at each nozzle. The vertical rotation of the nozzle is controlled by the up and down movement of the piston rod of the small pneumatic cylinder.

12. The expansion and contraction of the piston rod of the No.1 pneumatic cylinder drives the fixed plate and all accessories thereon to move through rollers. When the piston rod of the No.2 pneumatic cylinder moves back and forth, the upper nozzle of the nozzle device moves upward on the guide rail through symmetrical connecting rods, and the lower nozzle of the nozzle device moves downward on the guide rail.

Brief Description of Drawings Fig. 1 is a three-dimensional schematic view of the structure of the present invention.

Fig. 2 is a schematic sectional view taken along line A-A of fig. 1.

Descriptions

Fig. 3 is an enlarged schematic view of the protective boss structure of the present invention.

Fig. 4 is a schematic cross-sectional view taken along line B-B of fig. 3.

Fig. 5 is an enlarged front view of the nozzle structure of the present invention.

Fig. 6 is an enlarged plan view of the nozzle structure of the present invention.

In the picture: 1 No.1 pneumatic cylinder, 2 L-shaped fixing plate, 3 No.2 pneumatic cylinder, 4 Connecting rod, 5 Guide, 6 Sand blower, 7 Parts, 8 Protection boss, 9 Cushion table, T-type worktable, 11 Antifriction bearing, 12 Pneumatic cylinder, 13 Coupling, 14 Rack, 15 Reducer, 101 Steel ball, 102 Spring, 103 Protection boss body, 104 Bolt, 201 No.3 pneumatic cylinder, 202 Piston rod, 203 Nozzle, 204 Installation version, 205 Tail locating rod, 206 Central locating rod.

Detailed Description of the Preferred Embodiments The following structural drawings further illustrate the technical solution of the present invention.

As shown in figs. 1 and 2, the automatic sand blasting device comprises a rotating worktable and a pneumatic sand blasting mechanism which are matched with each other. The pneumatic sand blasting mechanism consists of a No.1 pneumatic cylinder 1, an L-shaped fixing plate 2, a No.2 pneumatic cylinder 3, a connecting rod 4, a guide rail 5 and a sand blasting device 6, wherein a roller is arranged below the bottom plate of the L-shaped fixing plate 2, the guide rail 5 is vertically arranged above the bottom plate of the L-shaped fixing plate 2, the cylinder rod of the No.1 pneumatic cylinder 1 is connected to the side plate of the L-shaped fixing plate 2, the No.2 pneumatic cylinder 3 is arranged on the side plate of the L-shaped fixing plate 2, one end of the two connecting rods 4 is arranged on the cylinder rod of the No.2 pneumatic cylinder 3 together through a connecting block, and the other ends of the two connecting rods 4 are respectively installed with guide The rotary worktable comprises a protection boss 8, a cushion table 9, a T-shaped worktable 10, an air cylinder 12, a frame 14 and a speed reducer 15, wherein the output shaft of the speed reducer 15 is connected with the platform column of the T-shaped worktable 10 through a coupling 13; the table surface of the T-shaped worktable 10 is positioned on the top surface of the frame 14 through a rolling bearing 11; the cushion table 9 is clamped in the center of the table surface of the T-shaped worktable 10; the air cylinder 12 is arranged in the platform column of the T-shaped worktable 10; and the top end of an air pressure rod of the air cylinder 12 is provided with a protection boss 8 by threads.

As shown in figs. 3 and 4, the protection boss 8 comprises steel balls 101, springs 102, a protection boss body 103 and bolts 104, the top surface of the protection boss body 103 is

Descriptions

rounded, and three groups of steel balls 101 and springs 102 are installed in the protection boss body 103 at 1200 degrees through the bolts 104.

As shown in figs. 5 and 6, the sandblasting device 6 comprises a No.3 pneumatic cylinder 201, a nozzle 203 and a mounting plate 204, wherein the No.3 pneumatic cylinder 201 and the mounting plate 204 are fixed on a guide block; a piston rod 202 of the No.3 pneumatic cylinder 201 is connected with a tail positioning rod 205 of the nozzle 203 by threads; and a middle positioning rod 206 of the nozzle 203 is fixed with the mounting plate 204 by bolts.

When the sand blasting device works, a suitable cushion table 9 and a protection boss 8 are selected according to the size of the valve part 7 to be sand blasted, the cushion table 9 is clamped in the center of the table top of the T-shaped table 10, the protection boss 8 is installed on the piston rod of the pneumatic cylinder 12, and the center of the valve part 7 to be sand blasted is aligned and placed on the cushion table 9. Gas is introduced into the pneumatic cylinder 12 to lift the protective boss 8, the pneumatic source is disconnected after the protective boss 8 is lifted out, a one-way valve is adopted to ensure that the protective boss 8 does not drop after the origin is disconnected, and the protective boss 8 uses the steel ball 101 and the spring 102 to position the valve part 7 to ensure that the position of the valve part 7 does not change during sand blasting and the inner hole of the valve part 8 is not damaged. The second pneumatic cylinder 3 and the connecting rod 4 are adopted to move the two symmetrical sandblasting devices 6 to the top and the bottom of the valve part 7 to be sandblasted, so that the two symmetrical sandblasting devices 6 can be sprayed to the top and the bottom of the valve part 7 during sandblasting, and the first pneumatic cylinder 1 is adopted to control the positions of the sandblasting devices 6 and the valve part 7 in the horizontal direction. During sand blasting, the reducer 15 drives the T-shaped worktable 10, the cushion table 9 and the valve part 7 to rotate. After a certain period of time, the nozzle 203 completes sand blasting on the horizontal plane of the valve part 7. The first pneumatic cylinder 1 and the second pneumatic cylinder 3 are used to control the symmetrical sandblasting device 6 to move downwards by a fixed distance for sandblasting in the second horizontal direction. When necessary, the No.3 pneumatic cylinder 201 is used to rotate the nozzle 203 vertically at a certain angle to ensure sand blasting to some corners and uneven places. When the nozzle 203 needs to rotate at a certain angle, the tail position of the nozzle is adjusted by the No.3 pneumatic cylinder 201, the piston rod 202 of the pneumatic cylinder and the tail positioning rod 205 of the nozzle are positioned by threads, and the nozzle is fixed by bolts of the middle positioning rod 206 and the mounting plate (204). According to the lever principle, when the No.3 pneumatic cylinder 201 rises, the nozzle 203 will rotate downwards, and when the No.3 pneumatic cylinder 201 falls, the nozzle 203 will rotate upwards to realize a certain angle of rotation in the vertical direction of the nozzle. Sand blasting the valve parts 7 from top to bottom; After all sandblasting is completed, stop sandblasting, move sandblasting device 6 to a distance, lower protective boss 8 with pneumatic cylinder 12, take out valve parts 7 with trolley, and sandblasting is completed.

Claims

1. The automatic sand blasting device is characterized by comprising a rotating worktable and a pneumatic sand blasting mechanism which are matched with each other. The pneumatic sand blasting mechanism consists of a No.1 pneumatic cylinder (1), an L-shaped fixing plate (2), a No.2 pneumatic cylinder (3), a connecting rod (4), a guide rail (5) and a sand blasting device (6), wherein rollers are arranged below the bottom plate of the L-shaped fixing plate (2), the guide rail (5) is vertically arranged above the bottom plate of the L-shaped fixing plate (2), and the cylinder rod of the No.1 pneumatic cylinder (1) is connected to the side plate of the L-shaped fixing plate (2). The side plate of the L-shaped fixing plate (2) is provided with a No.2 pneumatic cylinder (3), one end of the two connecting rods (4) are arranged on the cylinder rod of the No.2 pneumatic cylinder (3) together through a connecting block, the other ends of the two connecting rods (4) are respectively provided with guide blocks, the guide blocks are arranged on guide rails (5), and the sandblasting device (6) is arranged on the guide blocks. The rotary worktable comprises a protection boss (8), a cushion table (9), a T-shaped worktable (10), an air pressure cylinder (12), a frame (14) and a reducer (15), wherein the output shaft of the reducer (15) is connected with the platform column of the T-shaped worktable (10) through a coupling (13), the table surface of the T-shaped worktable (10) is positioned on the top surface of the frame (14) through a rolling bearing (11), the cushion table (9) is clamped in the center of the table surface of the T-shaped worktable (10), the air pressure cylinder (12) is arranged in the platform column of the T-shaped worktable (10), and the top end of the air pressure rod of the air pressure cylinder (12) install the protective boss (8) with threads.

2. The automatic sand blasting device according to claim 1 is characterized in that the protection boss (8) comprises steel balls (101), springs (102), a protection boss body (103) and bolts (104), the top surface of the protection boss body (103) is rounded, and three groups of steel balls (101) and springs (102) are installed in the protection boss body (103) at 120° degrees through bolts (104).

3. The automatic sand blasting device according to claim 1 is characterized in that the sand blasting device (6) comprises a No.3 pneumatic cylinder (201), a nozzle (203) and a mounting plate (204), wherein the No.3 pneumatic cylinder (201) and the mounting plate (204) are fixed on a guide block, a piston rod (202) of the No.3 pneumatic cylinder (201) is connected with a tail positioning rod (205) of the nozzle (203) by threads, and a middle positioning rod (206) of the nozzle (203) is fixed with the mounting plate (204) by bolts.