Pipe fitting interior grinding device

Abstract

The invention discloses a pipe fitting interior grinding device which comprises a rack, a pipe fitting clamping assembly, a pipe fitting supporting assembly and a grinding assembly, the grinding assembly comprises a grinding rod, a rotating assembly for driving the grinding rod to rotate and a pushing assembly for driving the grinding rod to translate, and a sleeve is arranged on the outer side of the grinding rod; a plurality of polishing blocks are rotationally mounted at the front end of the sleeve and the front end of the polishing rod through a shear fork mechanism; a baffle ring is fixed on the polishing rod; a spring is arranged between the tail end of the sleeve and the baffle ring in a sleeving manner; the pipe fitting clamping assembly comprises a chuck and a motor for driving the chuck to rotate; the pipe fitting supporting assembly comprises two parallel supporting rollers and a lifting assembly for driving the supporting rollers to ascend and descend. The multiple polishing blocks are rotationally installed at the front end of the polishing rod through the shear fork mechanism and can be tightly attached to the inner walls of pipe fittings with different inner diameters, the pipe fittings with different specifications can be fixed through the liftable supporting rollers and the chucks, and universality is good.

Description

Technical Field

[0001] The invention relates to the technical field of pipe fitting grinding, and in particular to a pipe fitting internal grinding device. Background Art

[0002] Pipe fittings are widely used in the mechanical field. When pipe fittings are manufactured, the surface quality of the inner wall is generally not very good, and further surface modification is required. In the production of pipe fittings, a grinding device is often required to grind the inner wall of the pipe fittings.

[0003] The existing grinding device generally extends a grinding block equivalent to the inner diameter of the pipe into the pipe to grind the inner wall of the pipe all around. The grinding device has poor versatility. Each time a pipe with a different inner diameter is ground, a grinding block of a different size needs to be replaced, which is very cumbersome. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a pipe internal grinding device, which can grind the inside of pipes with different diameters and has good versatility.

[0005] To this end, the technical solution of the present invention is: a pipe internal grinding device, including a frame, a pipe clamping assembly, a pipe supporting assembly and a grinding assembly, the grinding assembly including a grinding rod, a rotating assembly driving the grinding rod to rotate and a propulsion assembly driving the grinding rod to translate, a sleeve is provided on the outside of the grinding rod, and a plurality of grinding blocks are rotatably installed on the front end of the sleeve and the front end of the grinding rod through a scissors mechanism; a retaining ring is fixed on the grinding rod, and a spring is sleeved between the end of the sleeve and the retaining ring; the pipe clamping assembly includes a chuck and a motor driving the chuck to rotate; the pipe supporting assembly includes two parallel supporting rollers and a lifting assembly driving the supporting rollers to rise and fall.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the scissors-type mechanism includes a first connecting rod and a second connecting rod that are rotatably matched in an X shape, one end of the first connecting rod and the second connecting rod are rotatably connected to the grinding block, and the other end is rotatably connected to the front end of the sleeve and the front end of the grinding rod respectively.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the grinding block is an arc-shaped structure, and an arc-shaped grinding surface is provided on the outer side.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the propulsion assembly includes a propulsion cylinder, a propulsion guide rail and a mounting seat, and the mounting seat is connected to the cylinder rod of the propulsion cylinder; rollers are provided on both sides below the mounting seat, and the rollers work in coordination with the propulsion guide rail.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a plurality of guide rods are fixed on the mounting seat, and a plurality of guide sleeves are provided on the side of the propulsion cylinder, which are slidably matched with the guide rods.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the rotating assembly includes a rotating motor, the rotating motor is installed on a mounting seat, and the grinding rod is connected to the output shaft of the rotating motor.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the pipe supporting assembly also includes a supporting plate, and the supporting roller is rotatably mounted on the supporting plate; the lifting assembly includes a lifting motor and a screw rod, the support plate is mounted on the screw rod through threads, and the lifting motor drives the screw rod to rotate to adjust the height of the mounting plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] A plurality of grinding blocks are rotatably installed at the front end of the grinding rod through a scissor mechanism. The spring drives the sleeve to move forward, so that the grinding blocks are expanded and can fit tightly with the inner walls of pipes with different inner diameters, thereby better realizing the grinding operation. The lifting and lowering support rollers and chucks can be used to fix pipes of different specifications and grind their inner walls, which has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a structural front view of the present invention;

[0016] Figure 3 It is a structural schematic diagram of the propulsion assembly of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the grinding rod of the present invention.

[0018] Marked in the figure are: frame 1, pipe clamping assembly 2, chuck 21, motor 22, pipe supporting assembly 3, support roller 31, support plate 32, lifting motor 33, screw 34, grinding assembly 4, grinding rod 41, sleeve 42, scissors mechanism 43, first connecting rod 431, second connecting rod 432, grinding block 44, grinding surface 45, retaining ring 46, spring 47, propulsion assembly 6, propulsion cylinder 61, propulsion guide rail 62, mounting seat 63, roller 64, guide rod 65, guide sleeve 66, rotating motor 67. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "several" and "a number" mean two or more, unless otherwise clearly and specifically defined.

[0021] See the attached drawings. The pipe internal grinding device of this embodiment comprises a frame 1, a pipe clamping assembly 2, a pipe supporting assembly 3 and a grinding assembly 4.

[0022] The pipe clamping assembly 2 includes a chuck 21 and a motor 22 for driving the chuck to rotate. The chuck 21 can clamp pipes of different diameters. The motor 22 drives the chuck 21 to rotate, thereby driving the pipe to rotate, which is convenient for grinding the inner wall.

[0023] The pipe supporting assembly 3 includes two parallel supporting rollers 31, a supporting plate 32 and a lifting assembly for driving the supporting rollers to rise and fall. The supporting rollers 31 are rotatably mounted on the supporting plate 32; the lifting assembly includes a lifting motor 33 and a screw rod 34. The supporting plate 32 is threadedly mounted on the screw rod 34. The lifting motor 33 drives the screw rod 34 to rotate to adjust the height of the mounting plate 32.

[0024] The grinding assembly 4 includes a grinding rod 41, a rotating assembly for driving the grinding rod 41 to rotate, and a propulsion assembly 6 for driving the grinding rod to translate. A sleeve 42 is provided on the outer side of the grinding rod 41. The front end of the sleeve 42 and the front end of the grinding rod 41 are rotatably installed with a plurality of grinding blocks 44 through a scissor mechanism 43. The scissor mechanism 43 includes a first connecting rod 431 and a second connecting rod 432 that are rotatably matched in an X shape. One end of the first connecting rod 431 and the second connecting rod 432 are rotatably connected to the grinding block 44, and the other ends are rotatably connected to the front end of the sleeve 42 and the front end of the grinding rod 41, respectively. The grinding block 44 is an arc-shaped structure, and an arc-shaped grinding surface 45 is provided on the outer side. A retaining ring 46 is fixed on the grinding rod 41, and a spring 47 is sleeved between the end of the sleeve 42 and the retaining ring 46. The spring 47 gives the sleeve 42 a forward force, so that the grinding block 44 is stretched outward, fits more closely with the inner wall of the pipe fitting, and has a better grinding effect.

[0025] The propulsion assembly 6 includes a propulsion cylinder 61, a propulsion guide rail 62 and a mounting seat 63. The mounting seat 63 is connected to the cylinder rod of the propulsion cylinder 61. Rollers 64 are provided on both sides below the mounting seat 63. The rollers 64 cooperate with the propulsion guide rail 62. A plurality of guide rods 65 are fixed on the mounting seat 63. A plurality of guide sleeves 66 are provided on the side of the propulsion cylinder 61 to slide with the guide rods 65. The rotating assembly includes a rotating motor 67. The rotating motor 67 is installed on the mounting seat 63. The grinding rod 41 is connected to the output shaft of the rotating motor 67.

[0026] During grinding, place the pipe fitting on the support roller 31, and adjust the height of the support roller 31 so that the pipe 5 is coaxial with the chuck 21, and then fix the end of the pipe fitting to the chuck 21; insert the head of the grinding rod 41 into the pipe fitting, and the spring 47 gives the sleeve 42 a forward force, so that the grinding block 44 is stretched outward and fits with the inner wall of the pipe fitting; start the rotating motor 67, and the rotating motor 67 drives the grinding block 44 to rotate to grind the inner wall of the pipe fitting, and the thrust cylinder 61 pushes the grinding block 44 to one side of the pipe fitting to thoroughly grind the inside of the pipe fitting.

[0027] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A pipe internal grinding device, characterized in that: It includes a frame, a pipe clamping assembly, a pipe supporting assembly and a grinding assembly. The grinding assembly includes a grinding rod, a rotating assembly for driving the grinding rod to rotate and a propulsion assembly for driving the grinding rod to translate. A sleeve is provided on the outer side of the grinding rod, and a plurality of grinding blocks are rotatably installed on the front end of the sleeve and the front end of the grinding rod through a scissor mechanism; a retaining ring is fixed on the grinding rod, and a spring is sleeved between the end of the sleeve and the retaining ring; the pipe clamping assembly includes a chuck and a motor for driving the chuck to rotate; the pipe supporting assembly includes two parallel supporting rollers and a lifting assembly for driving the supporting rollers to rise and fall.

2. A pipe internal grinding device according to claim 1, characterized in that: The scissor mechanism comprises a first connecting rod and a second connecting rod which are rotatably matched in an X shape, wherein one end of the first connecting rod and the second connecting rod are rotatably connected to the grinding block, and the other ends are rotatably connected to the front end of the sleeve and the front end of the grinding rod respectively.

3. A pipe internal grinding device as claimed in claim 2, characterized in that: The grinding block is an arc-shaped structure, and an arc-shaped grinding surface is arranged on the outer side.

4. A pipe internal grinding device as claimed in claim 1, characterized in that: The propulsion assembly comprises a propulsion cylinder, a propulsion guide rail and a mounting seat, wherein the mounting seat is connected to the cylinder rod of the propulsion cylinder; rollers are arranged on both sides below the mounting seat, and the rollers cooperate with the propulsion guide rail.

5. A pipe internal grinding device as claimed in claim 4, characterized in that: A plurality of guide rods are fixed on the mounting seat, and a plurality of guide sleeves are arranged on the side of the propulsion cylinder and are slidably matched with the guide rods.

6. A pipe internal grinding device as claimed in claim 4, characterized in that: The rotating assembly comprises a rotating motor, the rotating motor is mounted on a mounting seat, and the grinding rod is connected to an output shaft of the rotating motor.

7. A pipe internal grinding device as claimed in claim 1, characterized in that: The pipe supporting assembly also includes a supporting plate, and the supporting roller is rotatably mounted on the supporting plate; the lifting assembly includes a lifting motor and a screw rod, the supporting plate is mounted on the screw rod through threads, and the lifting motor drives the screw rod to rotate to adjust the height of the mounting plate.

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