A surface blasting device for machining

Abstract

The utility model discloses an outer surface sand blasting device for machining, including the shell, the lower surface of shell is provided with the through groove, the through groove is slidably connected with the moving plate, compared with traditional fixed operating hole equipment, and the device is through the moving plate of along the through groove sliding, and the blocking band and synchronous transmission sprocket chain of collocation and moving plate linkage, realizes the flexible adjustment of sand blasting operation position. The operator does not need to frequently carry, turns over the heavy long workpiece, only promotes the moving plate to drive the sand blasting gun to cover the long workpiece full surface, both greatly reduce the labor intensity, and also avoid the precision damage caused by workpiece knock; simultaneously need not to suspend the operation adjustment workpiece, and the processing efficiency is improved significantly. And compared with the complex component of motor, reduction gearbox and so on conveying type equipment, the device structure is simple, and the manufacturing cost is low, and need not professional debugging and high expensive operation and maintenance investment, and more suitable for the small factory of budget limit.

Description

Technical Field

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

[0002] In the field of machining, sandblasting is a crucial process for removing rust and scale from workpiece surfaces and enhancing surface roughness to facilitate subsequent processing. Traditional sandblasting equipment typically has a fixed operating hole on the outer casing, requiring operators to extend their hands through this hole to work inside the equipment. However, when processing long workpieces, the fixed position of the operating hole severely limits the operator's effective working range, allowing them to treat only the local area of ​​the workpiece directly opposite the operating hole. To complete the sandblasting of the entire surface of a long workpiece, it is necessary to frequently manually move and rotate the heavy workpiece to adjust its relative position to the operating hole. This process is not only extremely labor-intensive, but the weight of the long workpiece itself also makes it prone to bumps and misalignments during manual adjustments, resulting in damage to the workpiece's surface precision. Furthermore, each adjustment of the workpiece position requires pausing the sandblasting operation, significantly reducing processing efficiency.

[0003] To address the challenge of moving long workpieces, conveyor-type sandblasting equipment has emerged on the market. This equipment automatically transports long workpieces via roller conveyors and conveyor belts, enabling continuous sandblasting. However, such equipment requires complex components such as motors, gearboxes, and transmission roller sets, resulting in significantly higher manufacturing costs compared to traditional equipment. Furthermore, installation and commissioning require specialized expertise, and subsequent maintenance and repair of transmission components necessitate additional manpower and financial investment, leading to higher overall operating costs. For small factories with limited production scale and budgets, the economic burden of purchasing and maintaining conveyor-type sandblasting equipment is substantial, forcing many to continue using traditional fixed-hole sandblasting equipment. This results in low efficiency and operational inconvenience when processing long workpieces, highlighting the urgent need for a sandblasting equipment solution that balances low cost with adaptability to long workpieces. Therefore, this paper proposes a surface sandblasting device for machining. Summary of the Invention

[0004] The purpose of this invention is to provide a surface sandblasting device for machining, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surface sandblasting device for machining, comprising a housing, a through groove being provided below the front surface of the housing, a movable plate being slidably connected to the through groove, and two through holes for easy hand passage and a pipe opening for easy passage of the sandblasting gun pipe on the movable plate;

[0006] Two storage boxes are symmetrically installed on the inner side of the front surface of the outer shell. The interior of each storage box is rotatably connected to a support shaft. A blocking strip for covering the through groove is wound between the two support shafts. The blocking strip is fixedly connected to the movable plate.

[0007] The bottom ends of both support shafts penetrate the bottom of the storage box and are equipped with sprockets. A chain is installed between the two sprockets.

[0008] Preferably, two "L"-shaped limiting plates are symmetrically installed on the inner side of the front surface of the housing, and the upper and lower sides of the blocking strip are located in the gap between the limiting plates and the inner side of the front surface of the housing.

[0009] Preferably, the bottom of the two storage boxes is fitted with chain boxes for protecting the chain and sprocket.

[0010] Preferably, an observation window made of tempered glass is installed on the upper surface of the front surface of the housing.

[0011] Preferably, a sand collection box for collecting sprayed material is installed at the bottom of the outer casing, and a door is installed on one side of the outer casing.

[0012] Preferably, the sand collection box includes a box body with an open top and an inclined bottom, the box body is installed at the bottom of the outer shell, a wire mesh frame is installed at the top of the box body, and a sand outlet is installed at the bottom of the box body.

[0013] Compared with existing technologies, the advantages of this invention are as follows: Compared with traditional fixed operating hole equipment, this device uses a movable plate that can slide along the through groove, coupled with a blocking belt linked to the movable plate and a synchronously driven sprocket and chain, to achieve flexible adjustment of the sandblasting operation position. Operators no longer need to frequently move or flip heavy, long workpieces; simply pushing the movable plate is enough to drive the sandblasting gun to cover the entire surface of the long workpiece, significantly reducing labor intensity and avoiding precision damage caused by workpiece collisions. Simultaneously, there is no need to pause operations to adjust the workpiece, significantly improving processing efficiency. Furthermore, compared with conveyor equipment requiring complex components such as motors and gearboxes, this device has a simple structure, low manufacturing cost, and requires no professional debugging or high maintenance investment, making it more suitable for small factories with limited budgets. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the present invention viewed from below;

[0016] Figure 3 This is a schematic diagram of the sand collection box of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the limiting plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the chain and sprocket of this utility model;

[0019] Figure 6 This is a schematic diagram of the internal structure of the storage box of this utility model;

[0020] Figure 7 This is a schematic diagram of the connection structure between the movable plate and the blocking strip of this utility model.

[0021] In the diagram: 1. Outer shell; 2. Door; 3. Sand collection box; 31. Box body; 32. Frame; 33. Sand outlet; 4. Observation window; 5. Through groove; 6. Moving plate; 7. Through hole; 8. Pipe outlet; 9. Limiting plate; 10. Blocking strip; 11. Chain box; 12. Storage box; 13. Sprocket; 14. Chain; 15. Support shaft. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figure 1-7 This utility model provides a technical solution: a surface sandblasting device for machining, including a shell 1 for forming a closed sandblasting space to prevent sand splashing and dust overflow during sandblasting. A through groove 5 is provided on the lower front surface of the shell 1. A movable plate 6 that can move along the length of the through groove 5 and is used to adjust the operating position is slidably connected to the through groove 5. The movable plate 6 has two through holes 7 for the operator's hands to pass through to hold the sandblasting gun, and a pipe opening 8 for the sandblasting gun pipe to pass through for sand conveying.

[0024] Two storage boxes 12 for storing the blocking strip 10 are symmetrically installed on the inner side of the front surface of the outer shell 1. The two storage boxes 12 are rotatably connected to the support shafts 15 for supporting and driving the blocking strip 10 to be retracted and extended. The blocking strip 10 is wound between the two support shafts 15 to cover the through groove 5 and prevent sand and dust from leaking out of the gaps in the through groove 5 during the sandblasting process. The material of the blocking strip 10 is nitrile rubber, PVC coated fabric or fluororubber. The blocking strip 10 is fixedly connected to the moving plate 6 and can be retracted on one side and pulled out on the other side as the moving plate 6 moves.

[0025] The bottom ends of the two support shafts 15 penetrate the bottom of the storage box 12 and are equipped with sprockets 13 for transmitting power. A chain 14 is installed between the two sprockets 13 to enable the two support shafts 15 to rotate synchronously and ensure the smooth winding and unwinding of the blocking belt 10.

[0026] like Figure 4 and Figure 5As shown: Two “L”-shaped limiting plates 9 are symmetrically installed on the inner side of the front surface of the outer shell 1. The upper and lower sides of the blocking strip 10 are located in the gap between the limiting plate 9 and the inner side of the front surface of the outer shell 1. The limiting plate 9 can restrict the movement direction of the blocking strip 10, prevent the blocking strip 10 from deviating during the retraction and extension process, and enhance the sealing between the blocking strip 10 and the outer shell 1, further reducing the leakage of sand and dust.

[0027] like Figure 4 As shown: The bottom of the two storage boxes 12 is equipped with chain boxes 11 for protecting the chain 14 and sprocket 13; the chain boxes 11 can isolate the chain 14 and sprocket 13 from the external environment, prevent sand and dust generated during the sandblasting process from adhering to the surface of the chain 14 and sprocket 13, avoid them from affecting the transmission effect due to wear or blockage, and extend the service life of the components.

[0028] like Figure 1 and Figure 2 As shown: An observation window 4 made of tempered glass is installed above the front surface of the outer shell 1; the tempered glass material has high strength and transparency, which can withstand the slight impact that may be generated during the sandblasting process, and also allows the operator to observe the sandblasting of the workpiece inside the outer shell 1 in real time, so as to adjust the sandblasting angle and position in time and ensure the sandblasting quality.

[0029] like Figure 2 and Figure 3 As shown: A sand collection box 3 for collecting blasting material is installed at the bottom of the outer shell 1, and a door 2 is installed on one side of the outer shell 1; the sand collection box 3 can collect the sand scattered during the sandblasting operation, which is convenient for subsequent recycling and reuse, and reduces resource waste; the door 2 makes it easy for operators to put the workpiece into the outer shell 1 or take it out from the inside, and can be closed during the sandblasting operation to ensure the airtightness of the outer shell 1.

[0030] like Figure 3 As shown: The sand collection box 3 includes a box body 31 with an open top and an inclined bottom. The box body 31 is installed at the bottom of the outer shell 1. A mesh frame 32 is installed on the top of the box body 31, and a sand outlet 33 is installed at the bottom of the box body 31. The open top design facilitates the sand material inside the outer shell 1 to fall into the box body 31, and the inclined bottom structure can guide the sand material to gather towards the sand outlet 33 for easy discharge. The mesh frame 32 can more conveniently place the workpiece while allowing the sand material to fall.

[0031] Working principle: First, open the door 2 on one side of the outer shell 1, and place the long workpiece to be sandblasted steadily on the mesh frame 32 of the sand collection box 3 at the bottom of the outer shell 1. After placement, close the door 2 to form a closed sandblasting space in the outer shell 1, so as to avoid sand splashing and dust overflow in subsequent operations.

[0032] After wearing gloves, the operator extends into the interior of the housing 1 through the through-hole 7. At the same time, the sandblasting gun pipe passes through the interior of the pipe opening 8. For long workpieces that need to be sandblasted completely, the operator does not need to manually move the heavy long workpiece. He only needs to push the movable plate 6 on the through groove 5 below the front surface of the housing 1, so that the sandblasting gun adjusts the sandblasting position synchronously with the movement of the movable plate 6. During this process, since the moving plate 6 is fixedly connected to the blocking belt 10, the moving plate 6 will pull the blocking belt 10 when it moves. The support shaft 15 in the storage box 12 on one side will rotate accordingly, releasing the blocking belt 10 from the storage box 12. The support shaft 15 on the other side will rotate under the synchronous transmission of the bottom sprocket 13 and the chain 14, retracting the excess blocking belt 10 into the corresponding storage box 12, ensuring that the blocking belt 10 completely covers the gap of the through groove 5. In addition, the L-shaped limiting plate 9 on the inner side of the outer shell 1 restricts the movement trajectory of the blocking belt 10 through the gap formed with the front surface of the outer shell 1, preventing it from deviating and causing sealing failure. The chain box 11 isolates sand and dust, protects the sprocket 13 and the chain 14 for smooth transmission, and ensures that the moving plate 6 can move smoothly along the length of the long workpiece.

[0033] After starting the sandblasting equipment, the sandblasting gun performs sandblasting on the surface of the long workpiece. The operator can observe the sandblasting status of different parts of the long workpiece in real time through the tempered glass observation window 4 above the front surface of the outer casing 1. Simply pushing the moving plate 6 slowly along the length of the long workpiece will move the sandblasting gun pipeline synchronously, gradually covering the entire surface of the long workpiece. There is no need to interrupt the operation to manually adjust the position of the long workpiece, which avoids potential impacts on processing accuracy during the movement of the long workpiece and reduces the labor intensity of the operator in handling the long workpiece, ensuring uniform and comprehensive sandblasting of the long workpiece surface. Sand scattered during the sandblasting process falls into the sand collection box 31 through the gaps in the mesh frame 32. The inclined structure at the bottom of the box 31 guides the sand to automatically collect at the sand outlet 33 at the bottom.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface sandblasting device for machining, comprising a housing (1), characterized in that: A through groove (5) is provided on the lower front surface of the outer shell (1). A movable plate (6) is slidably connected to the through groove (5). Two through holes (7) for easy hand passage and a pipe opening (8) for easy sandblasting gun pipe passage are provided on the movable plate (6). Two storage boxes (12) are symmetrically installed on the inner side of the front surface of the outer shell (1). The two storage boxes (12) are rotatably connected to the inside of each other. A blocking strip (10) for covering the through groove (5) is wound between the two supporting shafts (15). The blocking strip (10) is fixedly connected to the moving plate (6). The bottom ends of the two support shafts (15) penetrate the bottom of the storage box (12) and are equipped with sprockets (13). A chain (14) is installed between the two sprockets (13).

2. The surface sandblasting device for machining according to claim 1, characterized in that: Two "L"-shaped limiting plates (9) are symmetrically installed on the inner side of the front surface of the outer shell (1), and the upper and lower sides of the blocking strip (10) are located in the gap between the limiting plate (9) and the inner side of the front surface of the outer shell (1).

3. The surface sandblasting device for machining according to claim 1, characterized in that: The bottom of the two storage boxes (12) is fitted with chain boxes (11) for protecting the chain (14) and sprocket (13).

4. The surface sandblasting device for machining according to claim 1, characterized in that: An observation window (4) made of tempered glass is installed above the front surface of the outer casing (1).

5. The surface sandblasting device for machining according to claim 1, characterized in that: The bottom of the outer shell (1) is equipped with a sand collection box (3) for collecting sprayed material, and a door (2) is installed on one side of the outer shell (1).

6. The surface sandblasting device for machining according to claim 5, characterized in that: The sand collection box (3) includes a box body (31) with an open top and an inclined bottom. The box body (31) is installed at the bottom of the outer shell (1). A mesh frame (32) is installed on the top of the box body (31), and a sand outlet (33) is installed at the bottom of the box body (31).

Images