WO2013063834A1

WO2013063834A1 - Annular-grinding automatic polishing apparatus

Info

Publication number: WO2013063834A1
Application number: PCT/CN2011/082637
Authority: WO
Inventors: 胡萍辉; 陈馨; 郑温宇; 黄明辉
Original assignee: 浙江天兴管业有限公司
Priority date: 2011-11-04
Filing date: 2011-11-22
Publication date: 2013-05-10
Also published as: CN103056763A

Abstract

An apparatus for automatic polishing of the outer circumferential surface of a pipe, comprising a platform (3), and provided on the platform and arranged along a same straight line, a supporting apparatus (29), a conveying apparatus, and a grinding apparatus. The conveying apparatus comprises a clamping part and a sliding part. The clamping part moves in a straight line over the sliding part, where the direction of the movement runs along the axial direction of a pipe-to-be-polished. The supporting apparatus comprises a support base and a support element arranged on the support base. The grinding apparatus comprises a fixed base (30) and a driving unit. The fixed base has arranged thereon a polishing wheel. The polishing wheel comprises an inner wheel (31) and an outer wheel (33) that rotate synchronously. The inner wheel has arranged on the inner wall thereof two or more flexible grinding components (39). The flexible grinding components are arc-shaped. The outer wheel and the driving unit are connected. Provided is an annular-grinding automatic polishing apparatus that polishes evenly, obviates the rotation of a pipe-to-be-processed, is highly efficient, and has relaxed requirements on the straightness and roundness of the pipe. This solves the technical problem of uneven polishing, a need for rotating the pipe while polishing, excess consumption of time and effort, low production efficiency, and high requirements on the pipe and on the apparatus.

Description

Ring grinding type automatic polishing equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a polishing apparatus, and more particularly to an apparatus for automatically polishing an outer circumferential surface of a pipe member without rotating the pipe.

Background technique

In the pipe production process, the surface polishing process of the pipe is an important process. At present, the traditional polishing method is to place the pipe on a polishing device equipped with several sets of rollers, and the roller is tangent to the outer circumference of the pipe, opposite the roller. It is equipped with several sets of polishing wheels (rigid), the polishing wheel is in contact with the outer circle of the pipe (the depth of contact can be adjusted); the grinding wheel and the roller are rotated by the transmission, and the rotation of the roller drives the pipe to rotate around the axis, so that the wheel is on the pipe The outer surface is subjected to circumferential polishing treatment, and at the same time, the pipe is radially pushed and linearly moved forward, thereby achieving circumferential polishing of the entire pipe by the grinding wheel. The conventional polishing method has high requirements on the straightness and roundness of the pipe, otherwise the polishing unevenness is likely to occur, and defects such as pits and uneven polishing are caused by excessive local polishing. In the existing patent documents, the Chinese patent is disclosed: "Tube surface polishing machine (CN2482481Y)", including the frame, at least one set of polishing wheel and polishing power mechanism, at least one set of guide wheels and guiding power mechanism, pipe Entering between the polishing wheel and the guide wheel, the tube will automatically rotate and be automatically fed and polished. Chinese patent: "Steel tube polishing machine (CN201295877Y)", including: Main motor, the output shaft of the main motor is connected with a reducer, and the output end of the reducer is connected with a three-jaw chuck for clamping the end of the steel pipe; The front end of the claw chuck is provided with a pair of grinding wheels arranged symmetrically for grinding the steel pipe. During operation, the three-jaw chuck clamps the end portion of the steel pipe and rotates the steel pipe under the action of the main motor; the grinding wheel of the pair of grinder groups rotates inward and polishes the outer wall of the steel pipe, and at the same time pulls on the grinding wheel The lower steel tube is displaced forward. Polishing of both of these documents requires the rotation of the pipe, which is highly demanding on equipment and fittings.

Summary of the invention

The invention provides a ring-grinding automatic polishing device with simple structure, polishing and hooking, no need for rotation of the pipe to be processed, high efficiency, low straightness and roundness of the pipe; solving the polishing existing in the prior art Uneven hooks, which require polishing of the pipe at the same time, which is time-consuming and labor-intensive, has low production efficiency, and has high technical requirements for pipes and equipment.

The invention also provides a tube for polishing different diameters, which can continuously and continuously perform the polishing process, and the roughing and finishing can be completed at one time, and the ring-grinding automatic polishing device is convenient to disassemble, and the polishing existing in the prior art is solved. Technical problems with poor versatility and low efficiency.

The above technical problem of the present invention is solved by the following technical solution: A ring-grinding automatic polishing apparatus, comprising: a gantry, on which a support device, a conveying device and a grinding machine are arranged on the same straight line Cutting device The conveying device comprises a clamping portion and a sliding portion, wherein the clamping portion linearly moves on the sliding portion, the moving direction is along an axial direction of the pipe to be polished; the supporting device comprises a supporting seat and a supporting member on the supporting seat; The grinding device comprises a fixing seat and a driving unit, wherein the fixing seat is provided with a polishing wheel, the polishing wheel comprises an inner wheel and an outer wheel which rotate synchronously, and the inner wall of the inner wheel is provided with two or more elastic grinding members, The elastic grinding member is curved and the outer wheel is connected to the drive unit. The pipe is clamped and moved in a linear direction by a conveying device, and the pipe passes through the inner wheel of the polishing wheel of the grinding device, and the elastic grinding member of the inner wall of the inner wheel can be adjusted according to the shape of the pipe due to the elasticity, thereby adhering to the outer surface of the pipe, The driving unit drives the outer wheel to rotate, and the inner wheel in the outer wheel is synchronously driven to rotate, thereby completing the polishing of the outer surface of the pipe. The drive unit can be any power source known nowadays, such as driving the outer wheel through a belt or a sprocket after the motor is driven, or gearing. Due to the rotary motion of the polishing wheel, the outer surface of the pipe is polished, and the pipe only needs to be linearly moved along the axial direction of the pipe by the conveying device without rotating, so as long as the clamping is ensured and the linear motion can be performed, for the pipe There is no particularly high requirement for straightness and roundness, because the elastic grinding member of the inner wheel in the polishing wheel can be polished in all directions according to the surface of the pipe, and the polishing degree is good. When the pipe is linearly moved, it is supported by the support member, and polishing is carried out while being conveyed, which can ensure the stability of polishing, achieve high-efficiency polishing, and save manpower and material resources.

Preferably, the conveying means comprises a front conveying means and a rear conveying means, the front conveying means and the rear conveying means being located on both sides of the grinding means, and the front conveying means and the rear conveying means alternately moving. The clamping portion of the front conveying device clamps the pipe, the sliding portion of the front conveying device drives the pipe to move forward, the supporting device supports, and then the conveying device is in the initial position, after the current conveying device moves one stroke, the electric switch is controlled The clamping portion of the front conveying device is loosened and the front conveying device is returned to the initial position of the front conveying device. At this time, the clamping portion of the rear conveying device clamps the pipe, and the sliding portion of the rear conveying device drives the pipe to continue. After the movement of the rear conveying device is completed, the electric switch is controlled to release the clamping portion of the conveying device and the rear conveying device is returned to the initial position of the rear conveying device, and the front conveying device starts to work again. The supporting device keeps the pipes on the same plane, and the front and rear conveying devices work alternately, so that the pipes can be polished without interruption, thereby improving the polishing efficiency.

The clamping portion can be clamped by means of a spring or a pin. The clamping member may be integrally formed or clamped after the two parts are closed. Preferably, the clamping portion comprises a clamping base, and the clamping base is provided with two opposite clamping members, the clamping member is connected with a clamping cylinder, and the clamping base is sleeved on the sliding portion. On the guide rail, a feed cylinder body is connected to the clamp base, and a cylinder shaft is connected to the feed cylinder block, and the cylinder shaft is fixed on the gantry. The two clamping members are connected by two clamp guide columns parallel to each other, and a screw with a positive and negative thread is installed in the middle of the two clamp guide columns, and the screw is connected with the front clamping cylinder to control the loosening of the two clamping members. Clamping. The cylinder shaft of the clamping cylinder is connected to the two clamping members, and the clamping member is clamped by the movement of the cylinder shaft, and the clamping portion slides back and forth on the guide rail, thereby realizing the conveying of the pipe. More preferably, the opposite sides of the two clamping members are curved, and a nylon layer is provided on the curved clamping surface of the clamping member. The surface of the clamping member that is in contact with the pipe is a clamping surface, and the clamping surface is curved. The curvature of the two clamping members is the same as the arc of the pipe, so that the pipe can be firmly clamped and fixed on the clamping surface. A layer of nylon ensures that the surface of the pipe will not be damaged and improve product performance.

Preferably, the grinding device comprises a fine polishing device and a rough polishing device, and the polishing device is concentric with the polishing wheel of the coarse polishing device. Two sets of grinding devices can be set up to ensure that both rough polishing and fine polishing are performed on one machine at the same time, and the pipe is polished efficiently to improve the smoothness of the treated pipe.

The arrangement of the supporting device may be arranged on the gantry as needed. Preferably, the supporting device is two sets, symmetrically arranged on both sides of the grinding device, and the supporting device is located between the grinding device and the conveying device and is close to grinding. One side of the device. The supporting device is used together with the conveying device to ensure smooth grinding of the pipe material, and the supporting device is close to the grinding device, which can ensure that the movement of the conveying device is not affected and the stability of the device is improved under the condition of effective support.

The supporting device comprises two supporting roller seats on both sides of the rail, the supporting roller bracket is connected with an adjustable height supporting roller frame, and a supporting roller shaft is arranged on the supporting roller frame, and two cones are fixed on the supporting roller shaft The round ends of the two conical wheels are connected to form a concave curved surface, and the pipe is connected with the tapered surface of the conical wheel to improve the supporting effect.

Preferably, a nest is arranged between the inner wheel and the outer wheel, the nesting is coaxial with the inner wheel and the outer wheel and rotates synchronously, and an annular cover plate is arranged on one side of the outer wheel, and the outer wheel and the fixed seat There are bearings between them. The nesting is fixed with both the inner and outer wheels, and the inner wheel, the nesting and the outer wheel rotate synchronously. Since the outer wheel is connected to the drive unit, its outer dimensions cannot be changed at will. In order to realize the polishing process of the pipes of different diameters, different inner rings can be matched by replacing different nests, thereby realizing different diameters. The pipe is polished to improve the versatility of the equipment, reduce costs and increase efficiency. The outer wheel is driven by the belt through the bearing to rotate with the output shaft of the drive motor.

More preferably, the inner wheel is provided with four sets of elastic grinding members, the outer wall of the inner wheel is provided with a protrusion, and the inner wall of the nest is provided with a positioning groove matched with the inner wheel, outside the nesting The circumferential surface is provided with a positioning key, and the inner wall of the outer wheel is provided with a groove that cooperates with the positioning key. The combination of the protrusion and the groove is arranged to facilitate the assembly and disassembly, and at the same time, the two can not be mutually moved, the structure is stable, and the synchronous operation effect is good.

The elastic grinding members are evenly distributed on the inner wall of the inner wheel, and the elastic grinding members are four. One end of the elastic grinding member is connected to the inner wall of the inner wheel, and the other end of the elastic grinding member is located on the same circle.

The elastic grinding member comprises a supporting spring piece integrally formed with the inner wheel, the supporting spring piece and the inner wheel have the same wall thickness, and the inner surface of the supporting spring piece is pasted with the abrasive patch, and the arc length of the abrasive patch is not less than the supporting spring piece The length of the arc.

The grinding member on the inner wall of the inner wheel is elastic, and the end point of the elastic grinding member is the same distance from the center of the inner wheel, so that a circle centered on the center of the inner wheel can be formed, and the diameter of the circle is slightly smaller than to be ground. The outer diameter of the cut pipe Moreover, the elastic grinding member is curved, so that the outer circumferential surface of the pipe can be more closely adhered according to the diameter and curvature of the pipe to effectively grind the pipe. Each support spring piece is tilted to the same angle in the center direction of the inner wheel, so that the end of the support spring piece is at the same distance from the center of the inner wheel, and the upper surface of the support spring piece is pasted with the epoxy paste by the epoxy resin AB glue. The elastic grinding member of the structure has a simple structure, and the abrasive patch can be easily replaced, thereby reducing the cost.

Therefore, a ring-grinding automatic polishing apparatus of the present invention has the following advantages: 1. The tube member does not need to be rotated, and the tube member is polished by the rotation of the polishing wheel; 2. The elastic grinding member in the polishing wheel utilizes the elastic member outside the tube member. The circumferential wall is uniformly polished, which requires low straightness and roundness of the pipe; 3. The front conveyor and the rear conveyor move alternately to achieve continuous polishing of the pipe, and the efficiency is high; 4. Fine polishing and rough polishing are set. Grinding allows the roughing and finishing processes to be completed in one go, reducing operating steps, saving costs and manpower.

DRAWINGS

Figure 1 is a front view of a ring-grinding automatic polishing apparatus of the present invention ^

Figure 2 is a plan view of Figure 1.

Figure 3 is a perspective view of Figure 1.

Figure 4 is an enlarged exploded view of the grinding apparatus of Figure 1.

detailed description

The technical solutions of the invention will be further specifically described below by way of embodiments and with reference to the accompanying drawings.

Example 1

As shown in Figures 1 and 2, a ring-grinding automatic polishing apparatus includes a gantry 3 on which the support means, the conveying means and the grinding means are disposed on the same line. The support device 29 has two sets, and the transfer device is divided into a front transfer device 20 and a rear transfer device 26, and the grinding device includes a fine polishing device 25 and a rough polishing device 22. On the stage 3, a front conveying device 20, a supporting device 29, a rough grinding polishing device 22, a fine polishing device 25, a supporting device 29, and a rear conveying device 26 are sequentially disposed. The support means 29 are arranged symmetrically on either side of the grinding device and the support means 29 is adjacent to the grinding means at the end of the travel of the conveyor.

As shown in FIG. 3, the front conveying device 20 is located at the rear end of the rough polishing and grinding device 22, and the front conveying device 20 includes a rail supporting seat 17 fixed to the gantry 3. The rail supporting base 17 has two groups, one set is set in a thick The polishing grinding device 22 is on the side, and the other group is disposed at the end of the gantry 3, and two sets of guide rails 2 parallel to each other are fixed on the rail support base 17, and the clamp base 16 is fixed on the guide rail 2 by a linear bearing 15, A feed cylinder 18 is fixed to the bottom surface of the clamp base 16, and one end of the cylinder shaft 12 is fixed in the feed cylinder 18, and the other end of the cylinder shaft 12 is fixed to the cylinder support seat 11 on the gantry 3, and the feed cylinder 18 is provided. The movement causes the clamp base 16 to move back and forth on the guide rail 2. Two front clamping members 21 are fixed on the clamp base 16, the clamping surfaces of the two front clamping members 21 are curved, and the two front clamping members 21 are oppositely arranged. Form a circle when it is tight. The two front clamping members 21 are connected by two clamp guide columns 13 which are parallel to each other. A screw 14 with a positive and negative thread is mounted between the two clamp guide posts 13, and the front clamping cylinder 19 is connected with the screw 14 to control two Release and clamping of the clamping members 21.

The rear transfer device 26 is located at the front end of the fine polishing device 25, and the rear transfer device 26 has the same structure as the front transfer device 20, and also includes the guide rail 2, the rail support base 17, the rear clamp cylinder 4, the clamp base 16, and the rear. The clamping member 27 and the like, the rear clamping cylinder 4 controls the loosening and clamping of the rear clamping member 27 on the clamping base 16, and the curved clamping surface of the clamping member 27 is provided with a nylon layer.

The support device 29 includes two support roller holders 10 on the gantry 3, and the support roller holder 10 is mounted with a height-adjusting support roller frame 5, and the two support roller holders 10 are respectively located outside the two sides of the guide rail 2, and the support roller frame 5 is mounted with a support roller shaft 6, and two tapered rollers 7 are fixed in the middle of the support roller shaft 6, the small end ends of the two rollers 7 are connected, and the two rollers 7 form a concave surface.

As shown in Fig. 4, the rough polishing device 22 of the grinding device is driven by a coarse polishing motor 9, which is driven by a fine polishing motor 24, and the motor output shaft drives the belt 8 through the wheel 23 to rotate the polishing wheel. . The rough polishing device 22 and the polishing device 25 have the same structure, and each includes a polishing wheel and a holder 30 that is sleeved outside the polishing wheel. The polishing wheel is driven by a polishing motor, and the polishing motor is fixed to the stage 3. The polishing wheel includes an inner wheel 31 that is coaxial and synchronously rotated, a nest 32, an outer wheel 33, and a cover plate 34. The outer wall of the inner wheel 31 has an integrally formed protrusion 35. On the inner wall of the nest 32, a positioning groove 36 is formed on the inner wall of the inner wheel 31, and a positioning key is integrally formed on the outer circumferential surface of the nest 32. 37. A groove 38 is formed on the inner wall of the outer wheel 33 to cooperate with the positioning key 37. The end surface of the cover plate 34 is integrally formed with a projection point (not shown) which cooperates with the positioning groove and the groove, so that the inner wheel 31, the outer wheel 33 and the nest 32 are assembled, and are integrally engaged by the cover plate 34.

The inner wheel 31 is an annular body formed by spring steel, and there are four uniformly curved elastic grinding members 39 in the inner wheel 31, and one end of the four elastic grinding members 39 is connected to the inner wheel 31. The inner walls are connected, and the other end is equal to the center distance of the inner wheel 31. The diameter of the inner circle formed by the four end points is slightly smaller than the diameter of the pipe to be ground, and the elastic grinding member 39 varies according to the diameter of the pipe to be ground. Elastic deformation can occur. The elastic grinding member 39 includes a support spring piece integrally formed with the inner wheel, and a grinding patch is attached to the inner surface of the support spring piece by epoxy resin AB. The grinding patch of the fine polishing grinding device is a fine abrasive patch, and the grinding patch of the rough polishing grinding device is a coarse abrasive patch for fine grinding and rough grinding. The diameter of the middle portion of the outer wheel 33 is larger than the diameter of the both ends, and a V-shaped belt groove 40 is formed on the outer circumferential surface of the middle portion for the external belt transmission system, and the outer diameter of the outer wheel 33 is small for mounting the support bearing 41, and the outer wheel 33 Install the support bearing 41 at both ends and put it into the holder.

When in use: Step 1: Place the pipe 28 to be polished on the supporting device, insert the pipe auxiliary section 1 of the corresponding specification The beginning of the pipe.

Step 2: Loosen the front and rear clamping cylinders, place the auxiliary section of the pipe on the equipment and pass through the rough polishing and grinding device, so that the auxiliary section of the pipe enters the polishing wheel and contacts the abrasive patch, and ensures that the pipe does not enter the polishing wheel. Abrasive patch contact.

Step 3: Press the automatic switch, the device enters the automatic operation: the front clamping cylinder 19 is clamped, and the front clamp 21 is pushed to clamp the pipe, and the coarse throwing motor 9 and the fine polishing motor 24 are activated to drive the rough polishing and grinding device 25 And the polishing wheel grinding device 22 rotates to prepare a rough polishing process and a polishing process for the pipe; the feeding cylinder pushes the pipe forward for a stroke, and the pipe is sequentially sent to the rough polishing wheel grinding device 25 and the polishing wheel grinding device 22 During the polishing operation, when the beginning of the pipe advances to the end of the stroke of the front conveyor, the control element is used to control the rear clamping cylinder 4 and the front clamping cylinder 19 to be synchronously clamped and loosened to ensure the entry of the pipe. At the end of the support frame of the device, at this time, the rear conveying device starts to work, the clamping pipe continues to move, and the front conveying device returns to the initial position along the guide rail to wait for the next reciprocating motion, so as to reciprocate.

Step 4: Each pipe is connected by a pipe plug. When a pipe is polished, the operator at the end removes the pipe plug and takes out the polished pipe into the material frame.

Claims

Claim

A ring-grinding automatic polishing apparatus, comprising: a gantry on which a support device, a conveying device, and a grinding device are disposed on the same straight line; the conveying device includes a clamping portion and a sliding portion, the clamping portion linearly moves on the sliding portion, the moving direction is along the axial direction of the pipe to be polished; the supporting device comprises a supporting seat and a supporting member on the supporting seat; the grinding device comprises fixing a seat and a driving unit, the polishing wheel is provided with a polishing wheel, the polishing wheel comprises an inner wheel and an outer wheel which rotate synchronously, and the inner wall of the inner wheel is provided with two or more elastic grinding members, and the elastic grinding member is curved The outer wheel is connected to the drive unit.

2. A ring-grinding automatic polishing apparatus according to claim 1, wherein: said conveying means comprises a front conveying means and a rear conveying means, and wherein the front conveying means and the rear conveying means are respectively located at two of the grinding means On the side, the front conveyor and the rear conveyor alternately move.

3. The ring-grinding automatic polishing apparatus according to claim 1 or 2, wherein: the clamping portion comprises a clamping base, and the clamping base is provided with two opposite clamping members, a clamping cylinder is connected to the clamping member, the clamping base is sleeved on the rail of the sliding portion, and the feeding cylinder is connected to the clamping base, and the feeding cylinder is connected with the cylinder shaft, The cylinder shaft is fixed to the gantry.

4. The ring-grinding automatic polishing apparatus according to claim 3, wherein: the opposite sides of the two clamping members are curved, and are provided on the curved clamping surface of the clamping member. Nylon layer.

5. A ring-grinding automatic polishing apparatus according to claim 1 or 2, wherein: said grinding device comprises a fine polishing device and a rough polishing device, and a polishing device and a coarse polishing device The polishing wheel of the polishing and grinding device is concentric.

6. The ring-grinding automatic polishing apparatus according to claim 4, wherein: the grinding device comprises a fine polishing device and a rough polishing device, a polishing device and a coarse polishing device. The polishing wheel of the cutting device is concentric.

7. A ring-grinding automatic polishing apparatus according to claim 1 or 2, wherein: said supporting means are two groups, which are symmetrically arranged on both sides of the grinding device, and the supporting device is located in the grinding The device and the conveyor are located near the side of the grinding device.

8. A ring-grinding automatic polishing apparatus according to claim 6, wherein: said supporting means are two groups, which are symmetrically arranged on both sides of the grinding device, and the supporting device is located in the grinding device and The conveyors are located near the side of the grinding device.

9. The ring-grinding automatic polishing apparatus according to claim 1 or 2, wherein: a nest is provided between the inner and outer wheels, and the nesting is the same as the inner and outer wheels The shaft rotates synchronously, and an annular cover plate is arranged on one side of the outer wheel, and a bearing is arranged between the outer wheel and the fixed seat.

10. The ring-grinding automatic polishing apparatus according to claim 9, wherein: the inner wheel is provided with four sets of elastic grinding members, and the outer wall of the inner wheel is provided with a protrusion, which is nested. The inner wall is provided with a positioning groove that cooperates with the inner wheel, and is nested The outer circumferential surface is provided with a positioning key, and the inner wall of the outer wheel is provided with a groove matching with the positioning key; the elastic grinding member comprises a supporting spring piece integrally formed with the inner wheel and an abrasive attached on the inner surface of the supporting spring piece Patch.