Gas sand rotating mechanism for rotary sand blasting

Abstract

The utility model discloses a gas-sand rotating mechanism for rotary sand blasting. The gas-sand rotating mechanism comprises a slip ring structure, wherein the slip ring structure comprises a slip ring fixed end and a slip ring movable end; the slip ring moving end is arranged in the slip ring fixed end, and the slip ring moving end is rotationally connected to the slip ring fixed end; an air inlet and an air outlet are formed in the inner wall of the slip ring fixed end; a vent hole connected with the air inlet, an air outlet hole connected with the air outlet and an annular channel communicated with the vent hole and the air outlet hole are formed in the inner wall of the sliding ring structure; the driving structure is connected with the synchronizing wheel through belt transmission. The synchronizing wheel is connected with the slip ring moving end. The rotating head comprises a rotating head movable end and a rotating head fixed end; the rotating head movable end is rotationally connected to the rotating head fixed end arranged below the rotating head movable end; the rotating head moving end is fixedly connected with the slip ring moving end; a sand blasting channel is formed in the rotating head in the axial direction of the rotating head. According to the rotary sand blasting device, the slip ring structure, the driving structure and the rotary head are matched with one another, so that efficient and stable operation of rotary sand blasting is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of sandblasting devices, specifically to the technical field of air-sand rotating mechanisms for rotary sandblasting. Background Art

[0002] With the wide application of robotic welding automation in various industries, welding spatters will be generated during the welding process by the welding torch. When the spatters reach a certain level, they will affect the subsequent welding quality. Thus, a gun cleaner is needed to clean the spatters inside the welding torch, thereby ensuring the subsequent welding quality. Under this background, gun cleaning equipment has emerged. Currently, there are two gun cleaning methods used in the market, one is the reamer type, and the other is the sandblasting type.

[0003] The air-sand rotating head for rotary sandblasting is the core mechanism in the sandblasting gun cleaner. This mechanism needs to perform sandblasting during rotation, which can more effectively clean the spatters inside the welding torch and achieve the gun cleaning effect. During the rotary sandblasting process of the sandblasting gun cleaner, compressed air and sand need to pass through the same rotating mechanism, and this design meets the conditions for rotary sandblasting.

[0004] The air-sand rotating head for rotary sandblasting consists of four parts: 1. Hollow slip ring; 2. Rotating head moving end connector; 3. Rotating head fixed end connector; 4. Synchronous pulley. The functions of each part are described separately below;

[0005] Hollow slip ring: This mechanism is composed of a fixed end flange, a moving end flange, a ring channel, air inlet and outlet ports, etc. This is a standard part, and its function is to continuously supply compressed air during rotation. The hollow slip ring is a standard part, but only continuously supplying compressed air during rotation by the rotary sandblasting cannot achieve the purpose of rotary sandblasting. Content of the Utility Model

[0006] The utility model aims at the technical problems mentioned in the above background art and adopts the following technical solutions to achieve:

[0007] An air-sand rotating mechanism for rotary sandblasting, comprising:

[0008] A slip ring structure, the slip ring structure includes a slip ring fixed end and a slip ring moving end; the slip ring moving end is arranged inside the slip ring fixed end, and the slip ring moving end is rotatably connected to the slip ring fixed end; an air inlet and an air outlet are arranged on the inner wall of the slip ring fixed end; a ventilation hole connected to the air inlet, an air outlet hole connected to the air outlet, and an annular channel communicating with the ventilation hole and the air outlet hole are arranged on the inner wall of the slip ring structure;

[0009] A driving structure, the driving structure is connected to the synchronous pulley through belt drive, and the synchronous pulley is connected to the slip ring moving end;

[0010] Rotating head, the rotating head includes a moving end of the rotating head and a fixed end of the rotating head; the moving end of the rotating head is rotatably connected to the fixed end of the rotating head provided therebelow; the moving end of the rotating head is fixedly connected to the moving end of the slip ring; a sand blasting channel along its axial direction is provided inside the rotating head.

[0011] Optionally, a labyrinth structure is provided between the moving end of the rotating head and the fixed end of the rotating head.

[0012] Optionally, two annular grooves are provided on the outer side of the fixed end of the rotating head, and sealing rings are provided in both of the two annular grooves.

[0013] Optionally, the fixed end of the rotating head includes a cover plate portion and a cylindrical structure; the cover plate portion is provided at the lower end of the cylindrical structure; the cover plate portion is fixedly connected to the lower end of the fixed end of the slip ring through fasteners.

[0014] Optionally, a rabbet is further provided on the end face of the cover plate portion facing the fixed end of the slip ring.

[0015] Optionally, the air inlet and the air outlet are respectively provided on both sides of the fixed end of the slip ring.

[0016] Optionally, the ventilation hole and the air outlet hole are respectively provided on both sides of the inner wall of the moving end of the slip ring.

[0017] Optionally, extension parts extending to both sides are provided at the upper end of the moving end of the rotating head, and the fixing parts are fixedly connected to the synchronous pulley.

[0018] Optionally, the annular channel is provided on the inner wall of the moving end of the slip ring and is located at the upper part of the moving end of the slip ring.

[0019] Optionally, sand outlets and sand inlets are respectively provided at both ends of the sand blasting channel.

[0020] The beneficial effects of the present utility model are as follows:

[0021] By setting the mutual cooperation of the slip ring structure, the driving structure and the rotating head, the present utility model realizes the efficient and stable operation of rotary sand blasting. By setting the optimized labyrinth structure and the design of two sealing rings, the service life of the rotating head is prolonged. The rotating mechanism of the present utility model is not only applicable to sand blasting equipment, but also can be extended to other equipment that needs to rotate and transmit multiple media, and has good market application prospects. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the air sand rotating mechanism for rotary sand blasting of the present utility model;

[0023] Figure 2 It is a schematic diagram of the moving end of the rotating head of the air sand rotating mechanism for rotary sand blasting of the present utility model;

[0024] Figure 3 The sectional view of the air-sand rotating mechanism for rotary sandblasting of the present utility model;

[0025] Figure 4 The perspective view of the air-sand rotating mechanism for rotary sandblasting of the present utility model at an angle;

[0026] In the figure:

[0027] 11. Fixed end of slip ring; 111a. Air inlet; 111b. Air inlet; 112. Air outlet; 12. Moving end of slip ring; 131. Vent hole; 132. Air outlet hole; 133. Annular channel; 2. Synchronous pulley; 31. Moving end of rotating head; 311. Fixed part; 32. Fixed end of rotating head; 321. Annular groove; 322. Sealing ring; 33. Labyrinth structure; 4. Sandblasting channel; 41. Sand outlet; 42. Sand inlet. Detailed implementation mode

[0028] In order to make it easy to understand the technical means, creative features, achieved purposes and functions of the present utility model, the present utility model will be further described below with reference to specific drawings.

[0029] As Figures 1-4 shown, the air-sand rotating mechanism for rotary sandblasting includes:

[0030] Slip ring structure 1, the slip ring structure 1 includes a fixed end 11 of the slip ring and a moving end 12 of the slip ring; the moving end 12 of the slip ring is arranged inside the fixed end 11 of the slip ring, and the moving end 12 of the slip ring is rotatably connected to the fixed end 11 of the slip ring; the inner wall of the fixed end 11 of the slip ring is provided with a plurality of air inlets 111a or 111b and an air outlet 112; the inner wall of the slip ring structure 1 is provided with a vent hole 131 connected to the air inlet 111, an air outlet hole 132 connected to the air outlet 112, and an annular channel 133 communicating with the vent hole 131 and the air outlet hole 132;

[0031] Drive structure, the drive structure is connected to the synchronous pulley 2 through belt drive, and the synchronous pulley 2 is connected to the moving end 12 of the slip ring;

[0032] Rotating head 3, the rotating head 3 includes a moving end 31 of the rotating head and a fixed end 32 of the rotating head; the moving end 31 of the rotating head is rotatably connected to the fixed end 32 of the rotating head arranged below it; the moving end 31 of the rotating head is fixedly connected to the moving end 12 of the slip ring; a sandblasting channel 4 is arranged axially in the rotating head 3.

[0033] In some embodiments, as Figure 1 and 2As shown, a labyrinth structure 33 is provided between the movable end 31 and the fixed end 32 of the rotating head; the labyrinth structure 33 creates a series of staggered or overlapping grooves or vanes between the movable end 31 and the fixed end 32 of the rotating head, with a certain gap left between them. These gaps are designed to be small enough to prevent the passage of liquids or solid particles. In addition, the labyrinth structure 33 can also reduce heat transfer through its specific design; the gaps and channels in the labyrinth structure 33 can interrupt the path of heat conduction, thereby reducing the efficiency of heat transfer from one component to another.

[0034] In some embodiments, as Figure 1 shown, two annular grooves 321 are provided on the outside of the fixed end 32 of the rotating head, and sealing rings 322 are provided in both of the two annular grooves 321.

[0035] In some embodiments, as Figure 3 shown, the fixed end 32 of the rotating head includes a cover plate portion 321 and a cylindrical structure 322; the cover plate portion 321 is provided at the lower end of the cylindrical structure 322; the cover plate portion 321 is fixedly connected to the lower end of the fixed end 11 of the slip ring through a fastener 323. Thus, the fixed end 11 of the slip ring and the fixed end 32 of the rotating head can be stably connected.

[0036] Furthermore, in some embodiments, the selection and installation position of the fastener 323 should ensure that the connection between the fixed end 32 of the rotating head and the fixed end 11 of the slip ring is firm and reliable, and can withstand various forces and torques generated during rotation.

[0037] In some embodiments, as Figure 3 shown, the end face of the cover plate portion 321 facing the fixed end 11 of the slip ring is also provided with a rabbet. When the cover plate portion 321 and the fixed end 11 of the slip ring are assembled, the corresponding structure (i.e., the protrusion) on the fixed end 11 of the slip ring will match the rabbet on the cover plate portion 321 to ensure accurate alignment between the two. This alignment not only improves the assembly efficiency but also enhances the connection stability.

[0038] In some embodiments, as Figure 3 shown, the air inlet 111 and the air outlet 112 are respectively provided on both sides of the fixed end 11 of the slip ring, which helps to reduce the occupied space of the device and improve the space utilization rate.

[0039] In some embodiments, as Figure 3 shown, the vent hole 131 and the air outlet hole 132 are respectively provided on both sides of the inner wall of the movable end 12 of the slip ring. This design can optimize the structure of the movable end 12 of the slip ring to make it more compact. By integrating the vent hole 131 and the air outlet hole 132 on the inner wall of the movable end 12 of the slip ring, space can be saved, making the entire system more compact and lightweight.

[0040] In some embodiments, as Figure 4As shown, the upper end of the rotating head moving end 31 is provided with a fixing portion 311 extending to both sides, and the fixing portion 311 is fixedly connected to the synchronous wheel 2. When the rotating head moving end 31 rotates, part of the structure at the upper end thereof extends to both sides and is connected to the fixing portions on both sides. The synchronous wheels are fixedly connected to the two fixing portions. When the rotating head rotates, although the structure on it moves, the position of the synchronous wheel is fixed due to the connection with the fixing portion.

[0041] In some embodiments, Figure 3 As shown, the annular channel 133 is provided on the inner wall of the sliding ring movable end 12 and is located at the upper part of the sliding ring movable end 12. The annular channel 133 may be used to contain lubricating liquid or sealant to ensure that the sliding ring movable end 12 can maintain stability and good sealing when moving.

[0042] In some embodiments, Figure 3 As shown, a sand outlet 41 and a sand inlet 42 are respectively provided at both ends of the sand blasting channel 4.

[0043] In addition to the above embodiments, the working method of the utility model is: the motor drives the synchronous wheel 2 to rotate, the synchronous wheel 2 is connected to the hollow slip ring moving end 12, the slip ring moving end 12 drives the rotating head moving end 31 to rotate together, and the hollow slip ring fixed end 11 is connected to the rotating head fixed end 32; at the same time, the rotating head fixed end 32 is fixed to the equipment end, so that during the working process, the hollow slip ring fixed end 11 and the rotating head fixed end 32 are stationary, and the slip ring moving end 12 drives the rotating head moving end 31 to rotate together.

[0044] During the rotation process, uninterrupted ventilation and sand passing are required; that is, the air path is continuously connected and disconnected, and the sand passing is continuous.

[0045] Specifically, when the air path is connected, that is, each time the air hole 131h is connected to the air inlet 111, at the same time, the air outlet hole 132 is connected to the air outlet 112.

[0046] When the air path is disconnected, the vent hole 131h and the air inlet 111 are disconnected, and the air outlet 132 and the air outlet 112 are disconnected. That is, the rotating head movable end 31 rotates so that the vent hole 131h and the air inlet 111 are staggered, and the air outlet 132 and the air outlet 112 are staggered.

[0047] When passing sand, sand is fed in through the sand inlet 42 and then discharged through the sand outlet 41. A labyrinth mechanism is designed in the sandblasting channel 4 to ensure that during the sand passing process, sand is not easy to enter the sandblasting channel 4 and thus damage the sealing ring, thereby extending the service life of the mechanism.

[0048] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An air sand rotating mechanism for rotary sand blasting, characterized in that: include: A slip ring structure, the slip ring structure comprising a slip ring fixed end and a slip ring movable end; the slip ring movable end is arranged inside the slip ring fixed end, and the slip ring movable end is rotatably connected to the slip ring fixed end; the inner wall of the slip ring fixed end is provided with an air inlet and an air outlet; the inner wall of the slip ring structure is provided with an air vent connected to the air inlet, an air outlet connected to the air outlet, and an annular channel connected to the air vent and the air outlet; A driving structure, wherein the driving structure is connected to a synchronous wheel through a belt drive, and the synchronous wheel is connected to the moving end of the slip ring; The rotating head comprises a rotating head moving end and a rotating head fixed end; the rotating head moving end is rotatably connected to the rotating head fixed end arranged thereunder; the rotating head moving end is fixedly connected to the slip ring moving end; a sandblasting channel is arranged in the rotating head along its axial direction.

2. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: A labyrinth structure is provided between the movable end of the rotating head and the fixed end of the rotating head.

3. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: Two annular grooves are arranged on the outer side of the fixed end of the rotating head, and sealing rings are arranged in the two annular grooves.

4. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: The fixed end of the rotating head includes a cover plate portion and a cylindrical structure; the lower end of the cylindrical structure is provided with the cover plate portion; the cover plate portion is fixedly connected to the lower end of the fixed end of the slip ring through a fastener.

5. The air sand rotating mechanism for rotary sand blasting according to claim 4, characterized in that: The end surface of the cover plate portion facing the fixed end of the slip ring is also provided with a stop.

6. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: The air inlet and the air outlet are respectively arranged on two sides of the fixed end of the slip ring.

7. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: The vent hole and the air outlet hole are respectively arranged on two sides of the inner wall of the movable end of the slip ring.

8. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: The upper end of the movable end of the rotating head is provided with a fixing portion extending to both sides, and the fixing portion is fixedly connected to the synchronous wheel.

9. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: The annular channel is arranged on the inner wall of the movable end of the slip ring and is located at the upper part of the movable end of the slip ring.

10. The air sand rotating mechanism for rotary sand blasting according to claim 1, characterized in that: The two ends of the sandblasting channel are respectively provided with a sand outlet and a sand inlet.

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