Annular polishing device for welded junction of stainless steel pipe

Abstract

The utility model relates to a stainless steel pipe welded junction annular polishing device which comprises a driving gear and a driven gear meshed with the driving gear, the center of the driven gear is provided with a hollow round hole used for inserting a stainless steel pipe, and the periphery of the hollow round hole is provided with a fixed block used for winding dust-free cloth. And a pressing mechanism for fixing the dust-free cloth is mounted on the driven gear. When the stainless steel pipe polishing machine is used, dust-free cloth is wound on the fixed block and pressed through the pressing mechanism, then a stainless steel pipe needing to be polished is inserted into the hollow round hole, a transmission rod on the driving gear is connected with a motor or an electric tool, the driving gear is close to the driven gear, the driving gear is made to be opposite to teeth of the driven gear, external force is started, and the stainless steel pipe is polished. The driving wheel rotates to drive the driven wheel to rotate to finish polishing of the stainless steel pipe in the middle of the gear core. The stainless steel surface and the inner wall are not polluted, polishing is uniform, the polishing efficiency is greatly improved, and certain economic popularization value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing devices, in particular to a device for annular polishing of welded joints of stainless steel pipes. Background Art

[0002] Stainless steel pipe is a hollow long round steel material, which is widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural parts. In addition, when the bending and torsional strengths are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also commonly used in furniture and kitchen utensils.

[0003] In the existing technology, there are three common ways to polish the welds of stainless steel pipes. The first is manual polishing, which involves applying polishing paste to the welds of the steel pipes, wrapping them with a dust-free cloth, and pulling the cloth with both hands to polish. The second is belt polishing, which involves polishing the outer surface of the stainless steel with a rotating belt. The third is desktop grinding machine polishing.

[0004] The above-mentioned existing technical solutions have the following defects: manual polishing is time-consuming and labor-intensive, and the efficiency is extremely low; belt polishing can only polish a part of the annular weld of the circular tube, and the polishing position needs to be moved multiple times to complete the annular polishing, and this method of polishing is uneven; desktop grinding wheel polishing can only polish a single straight tube, and cannot polish steel tubes with complex shapes and structures, especially in the field of semiconductor special gases. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a device for annular polishing of stainless steel pipe welds, which can perform annular polishing on stainless steel pipes with complex shapes without contaminating the surface and inner wall of the stainless steel, polishing evenly and greatly improving the polishing efficiency.

[0006] The above utility model object of the utility model is achieved through the following technical solutions:

[0007] A device for annular polishing of a stainless steel pipe weld comprises a driving gear and a driven gear meshing with the driving gear, wherein the center of the driven gear is provided with a hollow circular hole for inserting the stainless steel pipe, fixed blocks for winding a dust-free cloth are arranged around the hollow circular hole, and a clamping mechanism for fixing the dust-free cloth is installed on the driven gear.

[0008] As a further technical solution of the utility model: the two outer side edges of the driving gear are respectively provided with inwardly concave guard arms.

[0009] As a further technical solution of the utility model: an external force connecting rod is fixedly connected to the center of a circle on one side of the driving gear, and the external force connecting rod is used to connect to an external electric tool or motor.

[0010] As a further technical solution of the utility model: the driven gear is composed of two half gears separated from the middle, and the two half gears are hingedly connected by a rotating shaft on one side at the outer edge where the gear is combined, and are detachably fixedly connected by a buckle on the other side;

[0011] When the two half gears are fitted together, the hollow circular hole is formed in the centers of the two half gears.

[0012] As a further technical solution of the present utility model: the clamping mechanism is provided in two groups and is respectively provided on the two half gears.

[0013] As a further technical solution of the utility model: the clamping mechanism includes an arc-shaped pressure block and a pin screw, the half gear is provided with an arc-shaped groove for the arc-shaped pressure block to be embedded, the pin screw is threadedly connected to the half gear, the pin screw passes through the half gear and abuts against the arc-shaped pressure block, the side walls at both ends of the arc-shaped groove are respectively provided with through holes for the dust-free cloth to pass through, and the two through holes are respectively located on both sides of the fixed block.

[0014] As a further technical solution of the utility model: the arc grooves on the two half gears are located on the same side of the driven gear.

[0015] As a further technical solution of the utility model: the two half gears are respectively provided with a slot for the buckle to be inserted.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects:

[0017] The utility model discloses a device for annular polishing of a stainless steel pipe weld. When in use, a dust-free cloth is wound around a fixed block and pressed by a pressing mechanism, and then the stainless steel pipe to be polished is inserted into a hollow circular hole. The transmission rod on the driving gear is connected to a motor or an electric tool, and the driving gear is close to the driven gear so that the teeth thereof are aligned with each other. When an external force is activated, the driving wheel rotates to drive the driven wheel to rotate, and the stainless steel pipe in the middle of the gear core is polished. The device does not pollute the surface and inner wall of the stainless steel, polishes evenly, and greatly improves the polishing efficiency, and has certain economic promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the driven gear in the utility model.

[0019] Figure 2 It is a structural schematic diagram of the driving gear in the utility model.

[0020] Figure numerals: 1, driving gear; 11, concave guard arm; 2, driven gear; 3, rotating shaft; 4, buckle; 41, slot; 5, fixed block; 6, arc-shaped pressure block; 7, ejector screw; 8, external force connecting rod; 9, hollow circular hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] Reference Figure 1 , a device for annular polishing of a stainless steel pipe weld disclosed in the utility model, comprises a driving gear 1 and a driven gear 2 meshing with the driving gear 1, a hollow circular hole 9 for inserting a stainless steel pipe is opened in the center of the driven gear 2, a fixed block 5 for winding a dust-free cloth is arranged around the hollow circular hole 9, and a clamping mechanism for fixing the dust-free cloth is installed on the driven gear 2.

[0026] The two outer edges of the driving gear 1 are respectively provided with inwardly concave protective arms 11. The inwardly concave protective walls can prevent the driven gear 2 from running off when the driving gear 1 rotates.

[0027] An external force connecting rod 8 is fixedly connected to the center of one side of the driving gear 1, and the external force connecting rod 8 is used to connect an external electric tool or motor. The external force connecting rod 8 can be connected to various external rotating forces such as motors and electric tools to drive the driving gear 1 to rotate.

[0028] The driven gear 2 is composed of two half gears separated from the middle. The two half gears are hingedly connected by a rotating shaft 3 on one side at the outer edge where the gear is combined, and the other side is detachably fixedly connected by a buckle 4. The two half gears are respectively provided with a card slot 41 for the buckle 4 to be inserted. When the two half gears are fitted to each other, a hollow circular hole 9 is formed in the center of the two half gears, and the hole is 2 to 5 mm larger than the standard size of 1 / 4.3 / 8.1 / 2.3 / 4.1 inches. For example, when polishing a 1 / 4 inch stainless steel pipe, a gear with a radius 2 mm larger than the radius of a 1 / 4 inch is selected, and when polishing a 1 inch stainless steel pipe, a gear with a radius 4 mm larger than the radius of a 1 inch pipe is selected. The utility model has a total of 6 sets of driven gears 2 from 1 / 4 to 1-1 / 2. From the hollow circular hole 9 to the outside is a fixed block 5, and the outside of the fixed block 5 is a hollow groove, with a pressure block inside, and a thimble screw 7 from the pressure block to the gear edge. When polishing, a dust-free cloth is wound around the gear core fixed block 5, and the dust-free cloth is pressed with a pressure block. The top ejector screw 7 is turned to support the pressure block, thereby firmly pressing the dust-free cloth. The other half of the gear is arranged in the same way. The four sets of clamping buckles are a complete driven wheel.

[0029] The clamping mechanism is provided in two groups and is respectively provided on the two half gears. The clamping mechanism includes an arc-shaped clamping block 6 and an ejector screw 7. An arc-shaped groove for the arc-shaped clamping block 6 is provided on the half gear. The ejector screw 7 is threadedly connected to the half gear. The ejector screw 7 passes through the half gear and abuts against the arc-shaped clamping block 6. Through holes for the dust-free cloth to pass through are respectively provided on the side walls at both ends of the arc-shaped groove. The two through holes are respectively located on both sides of the fixed block 5. The arc-shaped grooves on the two half gears are located on the same side of the driven gear 2.

[0030] The utility model utilizes a driving gear 1 to drive a driven gear 2 to rotate, and the gear core is a ring-shaped weld that needs to be polished, and the gear rotates to achieve polishing. Taking the polishing of a 1-inch stainless steel tube as an example, a driven gear 2 with a gear core of a 1-inch tube is selected, and a dust-free cloth is wrapped around the fixed block 5. The end of the dust-free cloth is pressed with an arc-shaped pressing block 6, and the thimble screw 7 is turned to make the thimble screw 7 press the arc-shaped pressing block 6, thereby pressing the dust-free cloth. The other half of the driven gear 2 is operated in the same way. After the dust-free cloth is installed on both halves of the gear, the two halves of the gear are clamped at the main polishing 1-inch tube weld coated with polishing paste, and locked with a buckle 4. The transmission rod on the driving gear 1 is connected to the motor or electric tool, and the driving gear 1 is close to the driven gear 2 so that the teeth are aligned with each other, and the external force is started. The driving wheel rotates to drive the driven wheel to rotate, and the polishing of the stainless steel tube in the middle of the gear core is completed.

[0031] The implementation principle of the utility model is as follows: the utility model discloses a device for annular polishing of the weld of a stainless steel pipe. When in use, the dust-free cloth is wound on the fixed block 5, and the dust-free cloth is pressed by a pressing mechanism, and then the stainless steel pipe to be polished is inserted into the hollow circular hole 9. The transmission rod on the active gear 1 is connected to the motor or electric tool, and the active gear 1 is close to the driven gear 2 so that the teeth are aligned with each other. The external force is started, and the active wheel rotates to drive the driven wheel to rotate, and the stainless steel pipe in the middle of the gear core is polished. It does not pollute the surface and inner wall of the stainless steel, the polishing is uniform and the polishing efficiency is greatly improved, and it has certain economic promotion value.

[0032] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for annular polishing of stainless steel pipe welds, characterized in that: The invention comprises a driving gear (1) and a driven gear (2) meshing with the driving gear (1); a hollow circular hole (9) for inserting a stainless steel pipe is provided at the center of the driven gear (2); fixed blocks (5) for winding a dust-free cloth are provided around the hollow circular hole (9); and a clamping mechanism for fixing the dust-free cloth is installed on the driven gear (2).

2. The device for annular polishing of a stainless steel pipe weld according to claim 1, characterized in that: The two outer side edges of the driving gear (1) are respectively provided with inwardly concave guard arms (11).

3. A device for annular polishing of a stainless steel pipe weld according to any one of claims 1 to 2, characterized in that: An external force connecting rod (8) is fixedly connected at the center of a circle on one side of the driving gear (1), and the external force connecting rod (8) is used to connect to an external electric tool or motor.

4. The device for annular polishing of a stainless steel pipe weld according to claim 1, characterized in that: The driven gear (2) is composed of two half gears separated from the middle, and the two half gears are hingedly connected at one side of the outer edge where the gears are connected by a rotating shaft (3), and are detachably fixedly connected at the other side by a buckle (4); When the two half gears are fitted together, the hollow circular hole (9) is formed at the centers of the two half gears.

5. The device for annular polishing of a stainless steel pipe weld according to claim 4, characterized in that: The clamping mechanism is provided in two groups and is respectively provided on the two half gears.

6. The device for annular polishing of a stainless steel pipe weld according to claim 5, characterized in that: The clamping mechanism comprises an arc-shaped pressing block (6) and a pin screw (7); an arc-shaped groove for embedding the arc-shaped pressing block (6) is provided on the half gear; the pin screw (7) is threadedly connected to the half gear; the pin screw (7) passes through the half gear and abuts against the arc-shaped pressing block (6); through holes for passing the dust-free cloth are respectively provided on the side walls at both ends of the arc-shaped groove; the two through holes are respectively located on the two sides of the fixed block (5).

7. The device for annular polishing of a stainless steel pipe weld according to claim 6, characterized in that: The arc-shaped grooves on the two half gears are located on the same side of the driven gear (2).

8. The device for annular polishing of a stainless steel pipe weld according to claim 4, characterized in that: The two half gears are respectively provided with a clamping slot (41) for the clamping buckle (4) to be inserted.

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