Automatic grinding machine for pipeline chamfer

Abstract

The utility model relates to an automatic polishing machine for pipeline chamfering. The automatic polishing machine comprises a machine table, a YZ-axis linear module arranged on the machine table, a clamp arranged at the driving end of the YZ-axis linear module and used for clamping a pipeline connector, and a polishing advancing mechanism horizontally arranged on the machine table and used for conducting chamfering polishing on the pipeline connector on the clamp. The grinding advancing mechanism comprises a base, a movable plate horizontally arranged on the base in a sliding mode, a motor horizontally arranged on the movable plate, an inner chamfering grinding knife arranged at the driving end of the motor, and an electric cylinder horizontally arranged on the base and used for driving the motor to be close to or away from the clamp, wherein the driving end of the motor points to the clamp. A pressure sensor is arranged between the driving end of the electric cylinder and the motor; the pressure sensor is arranged between the driving end of the electric cylinder and the motor, so that the propelling speed of the electric cylinder can be automatically adjusted according to a pressure value, the inner chamfering grinding knife and a pipeline are always under constant pressure, and the grinding quality is ensured.

Description

Technical Field

[0001] The utility model relates to the field of pipeline processing, in particular to an automatic pipeline chamfering grinding machine. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for transporting gas, liquid or fluid with solid particles. Pipes have a wide range of uses, mainly in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial installations.

[0003] When pipes are butt-jointed, in order to ensure the tightness of the joint, both ends of the pipes need to be processed. The chamfering of the pipes can not only reduce the sharpness of both ends of the pipes and reduce accidental injuries to personnel, but also make the jointing of the pipes more adaptable.

[0004] For example, a new pipe chamfering machine disclosed in the prior art CN202020795858.2 can chamfer and grind the pipe interface, but it has the following problems:

[0005] 1. The prior art can clamp the pipe during use to make it firm by the coordination of the secondary track, the clamping block and the second screw. At the same time, the baffle is set to prevent the pipe from shaking back and forth during operation. However, the above structure is only applicable to hard pipes of a specific length and not to soft pipes.

[0006] 2. The prior art can control the movable plate to reach the chamfering position without human intervention through the coordination of the primary track and the first screw during use; however, the grinding forward force cannot be controlled, and the grinding process can only be performed according to the advancement speed set by the program. Too much or too little grinding forward force will affect the grinding effect, resulting in low grinding quality;

[0007] 3. In the prior art, the height of the internal chamfer grinder or the operating platform is not adjustable, so only pipes of a specific diameter can be clamped on the operating platform. If pipes of other sizes are clamped, it cannot be ensured that the internal chamfer grinder is concentric with the pipe, resulting in limited applicability. Utility Model Content

[0008] The utility model aims to provide an automatic pipe chamfering grinding machine in order to overcome the deficiencies of the prior art.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an automatic pipe chamfering grinding machine, comprising a machine platform, a YZ axis linear module arranged on the machine platform, a fixture arranged at the driving end of the YZ axis linear module for clamping the pipe interface, and a grinding forward mechanism horizontally arranged on the machine platform for chamfering the pipe interface on the fixture;

[0010] The grinding forward mechanism includes a base, a movable plate horizontally slidably arranged on the base, a motor horizontally arranged on the movable plate with a driving end pointing to the fixture, an inner chamfer grinder arranged at the driving end of the motor, and an electric cylinder horizontally arranged on the base for driving the motor to approach or move away from the fixture; a pressure sensor is arranged between the driving end of the electric cylinder and the motor.

[0011] Preferably, the drive shaft of the electric cylinder, the drive shaft of the motor and the inner chamfer grinder are all arranged on the same center line.

[0012] Preferably, the grinding forward mechanism also includes a support seat arranged on the movable plate and located between the motor and the clamp, a tool sleeve arranged on the support seat and placed coaxially with the motor, a bearing arranged between the tool sleeve and the support seat, and a coupling for connecting the tool sleeve and the motor drive end; the inner chamfer grinding tool is disassembled and arranged at the end of the tool sleeve.

[0013] Preferably, the grinding advancement mechanism further includes a dust cover arranged on the base; and the electric cylinder to the tool sleeve portion are all arranged in the dust cover.

[0014] Preferably, the fixture includes a mounting base vertically arranged at the driving end of the YZ-axis linear module, a fixed clamping block arranged at the bottom of the mounting base, a support plate arranged at the top of the mounting base, a slide groove vertically arranged on the mounting base and located between the fixed clamping block and the support plate, a movable clamping block slidably arranged in the slide groove and placed opposite to the fixed clamping block, and a lifting cylinder vertically arranged on the support plate for driving the sliding clamping block to rise and fall.

[0015] Preferably, the clamping surfaces of the fixed clamping block and the movable clamping block are further provided with detachable clamping heads; and the clamping heads are provided with semicircular clamping grooves.

[0016] Preferably, the chuck is provided with a plurality of parallel slots of different sizes.

[0017] Preferably, the YZ-axis linear module includes a Y-axis linear module horizontally arranged on the machine platform and placed vertically with the electric cylinder, and a Z-axis linear module vertically arranged on the driving end of the Y-axis linear module; the mounting seat is vertically arranged at the driving end of the Z-axis linear module.

[0018] Preferably, a protective cover with a front opening is provided on the machine platform; and safety gratings are provided on both sides of the front opening of the protective cover.

[0019] Preferably, a touch screen and operation buttons are provided on the front of the protective cover, and a three-color indicator light is provided on the top.

[0020] Preferably, a plurality of casters with supporting functions are provided at the bottom of the bottom of the machine platform.

[0021] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0022] 1. The utility model can automatically adjust the propulsion speed of the electric cylinder according to the pressure value by arranging a pressure sensor between the electric cylinder driving end and the motor, so that the inner chamfer grinding tool and the pipeline are always under a constant pressure to ensure the grinding quality;

[0023] 2. The utility model can adjust the front and rear and up and down positions of the fixture through the YZ axis linear module, so that the pipeline and the inner chamfer grinder are placed concentrically to ensure the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0025] Attached Figure 1 This is a schematic diagram of the structure of the automatic pipe chamfering grinding machine described in the utility model;

[0026] Attached Figure 2 This is the internal structure diagram of the automatic pipe chamfering grinding machine described in the utility model;

[0027] Attached Figure 3 It is a structural schematic diagram of the grinding and advancing mechanism in the utility model;

[0028] Attached Figure 4 It is a schematic diagram of the structure of the YZ axis linear module and the fixture in the utility model.

[0029] Among them: 1. Machine; 11. Protective cover; 12. Safety grating; 13. Touch screen; 14. Three-color indicator light; 15. Protective window; 16. Caster; 2. YZ axis linear module; 21. Y axis linear module; 22. Z axis linear module; 3. Fixture; 31. Mounting seat; 32. Fixed clamp block; 33. Support plate; 34. Slide; 35. Movable clamp block; 36. Lifting cylinder; 37. Chuck; 38. Slot; 39. Calibration column; 4. Grinding forward mechanism; 40. Dust cover; 41. Base; 42. Movable plate; 43. Motor; 44. Internal chamfering grinder; 45. Electric cylinder; 46. Pressure sensor; 47. Support seat; 48. Tool sleeve; 49. Coupling. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Attached Figure 1-4 The automatic pipe chamfering grinding machine of the utility model comprises a machine platform 1, a YZ axis linear module 2 arranged on the machine platform 1, a fixture 3 arranged at the driving end of the YZ axis linear module 2 for clamping the pipe interface, and a grinding advancing mechanism 4 horizontally arranged on the machine platform 1 for chamfering the pipe interface on the fixture 3;

[0032] The grinding forward mechanism 4 includes a base 41, a movable plate 42 horizontally slidably arranged on the base 41, a motor 43 horizontally arranged on the movable plate 42 with the driving end pointing to the fixture 3, an inner chamfer grinder 44 arranged at the driving end of the motor 43, and an electric cylinder 45 horizontally arranged on the base 41 for driving the motor 43 to approach or move away from the fixture 3; a pressure sensor 46 is arranged between the driving end of the electric cylinder 45 and the motor 43;

[0033] During operation: first manually fix the pipe interface through the clamp 3, and then adjust the front and back or up and down position of the clamp 3 through the YZ axis linear module 2, so that the pipe and the inner chamfer grinder 44 are placed concentrically; then the inner chamfer grinder 44 is driven to rotate by the motor 43, and at the same time, the electric cylinder 45 drives the motor 43 to move toward the clamp 3, and the pipe interface is chamfered and polished by the inner chamfer grinder 44; during the polishing process, the pressure sensor 46 can automatically adjust the propulsion speed of the electric cylinder 45 according to the pressure value, so that the inner chamfer grinder 44 and the pipe are always under a constant pressure to ensure the polishing quality; in order to improve the polishing accuracy, polishing paste can be applied to the pipe interface or the inner chamfer grinder 44 before polishing; when the polishing is completed, the electric cylinder 45 drives the motor 43 to drive the inner chamfer grinder 44 away from the fixture and return to the initial position, and at the same time the motor 43 stops rotating, and the pipe can be manually removed from the clamp 3.

[0034] Further, if Figure 2 As shown, the driving shaft of the electric cylinder 45, the driving shaft of the motor 43 and the inner chamfer grinder 44 are all arranged on the same center line, so that the force points are located on the same center line, thereby improving the service life.

[0035] Furthermore, the electric cylinder 45 is a servo electric cylinder, and the motor 43 is a servo motor, which is convenient for controlling the propulsion speed of the electric cylinder and the grinding speed of the motor.

[0036] Further, if Figure 2-3 As shown, the grinding forward mechanism 4 also includes a support seat 47 disposed on the movable plate 42 and located between the motor and the fixture 3, a knife sleeve 48 disposed on the support seat 47 and coaxially placed with the motor, a bearing disposed between the knife sleeve 48 and the support seat 47, and a coupling 49 for connecting the knife sleeve 48 and the motor drive end; the inner chamfer grinding tool 44 is disassembled and disposed at the end of the knife sleeve 48;

[0037] The utility model provides the knife sleeve 48, which not only facilitates the replacement of the inner chamfering knife 44, but also reduces the vibration of the motor output shaft and improves the grinding accuracy.

[0038] Further, if Figure 1 As shown, the grinding forward mechanism 4 further includes a dust cover 40 disposed on a base 41; the electric cylinder 45 to the knife sleeve 48 are all disposed in the dust cover 40;

[0039] The utility model can prevent grinding particles from entering into the moving parts through the dust cover 40, thereby reducing wear and tear and increasing the service life of the moving parts.

[0040] Further, if Figure 4 As shown, the fixture 3 includes a mounting seat 31 vertically arranged at the driving end of the YZ axis linear module 2, a fixed clamping block 32 arranged at the bottom of the mounting seat 31, a support plate 33 arranged at the top of the mounting seat 31, a slide groove 34 vertically arranged on the mounting seat 31 and located between the fixed clamping block 32 and the support plate 33, a movable clamping block 35 slidably arranged in the slide groove 34 and placed opposite to the fixed clamping block 32, and a lifting cylinder 36 vertically arranged on the support plate 33 for driving the sliding clamping block to rise and fall;

[0041] During operation: first, the movable clamp block 35 is driven upward by the lifting cylinder 36 to move away from the fixed clamp block 32, and then the pipe interface is placed between the fixed clamp block 32 and the movable clamp block 35. Finally, the movable clamp block 35 is driven downward by the lifting cylinder 36 to cooperate with the fixed clamp block 32 to clamp the pipe interface.

[0042] Further, if Figure 4 As shown, the mounting seat 31, the fixing clamp block 32 and the supporting plate 33 are integrally formed, which not only has a firm structure but also is easy to process and reduces assembly.

[0043] Further, if Figure 4 As shown, a detachable clamp 37 is also provided on the clamping surface of the fixed clamp block 32 and the movable clamp block 35;

[0044] The utility model is provided with a detachable clamp 37, which is not only convenient for maintenance, but also can replace the docking clamp 37 according to pipes of different diameters, and has high compatibility.

[0045] Further, if Figure 4 As shown, the clamp 37 is provided with a semicircular clamping groove 38, which can not only firmly clamp the pipe interface, but also prevent the pipe interface from deformation.

[0046] Further, if Figure 4 As shown, in order to improve the concentricity between the pipe and the inner chamfer grinder 44, before installing the pipe joint, you can first install the pointed calibration column 39 (install the calibration column 39 into the slots 38 of the two chucks 37), and then adjust the front and back or up and down position of the fixture 3 through the YZ-axis linear module 2, so that the tip of the calibration column 39 and the tip of the inner chamfer grinder 44 are aligned and corrected, and then lock the YZ-axis linear module 2, remove the calibration column 39, and finally install the pipe joint into the slots 38 of the two chucks 37.

[0047] Further, if Figure 4As shown, if the pipe joints have few sizes, multiple parallel slots 38 of different sizes can be directly set on the chuck 37. In this way, there is no need to replace the chuck 37, and the position can be adjusted through the YZ axis linear module 2, which is more convenient.

[0048] Further, if Figure 4 As shown, the YZ-axis linear module 2 includes a Y-axis linear module 21 horizontally arranged on the machine table 1 and placed vertically with the electric cylinder 45, and a Z-axis linear module 22 vertically arranged on the driving end of the Y-axis linear module 21; the mounting seat 31 is vertically arranged at the driving end of the Z-axis linear module 22;

[0049] In the present invention, the electric cylinder 45 is placed along the X-axis, and forms a three-axis with the Y-axis linear module 21 and the Z-axis linear module 22 .

[0050] Further, if Figure 4 As shown, the Y-axis linear module 21 and the Z-axis linear module 22 are both hand-cranked linear slides, which can be manually adjusted directly by ordinary staff without the need for professional programmers to adjust by program, which is more convenient; and after the adjustment is completed, they can be locked by a locking assembly, and the locking assembly can adopt a cam structure.

[0051] Further, if Figure 1 As shown, the machine platform 1 is provided with a protective cover 11 with a front opening; the protective cover 11 is provided with safety gratings 12 on both sides of the front opening to play a safety protection role.

[0052] Further, if Figure 1 As shown, a touch screen 13 and operation buttons are arranged on the front of the protective cover 11, and a three-color indicator light 14 is arranged on the top to display the working status of the device.

[0053] Further, if Figure 1 As shown, both sides and the back of the protective cover 11 are provided with openable protective windows 15 for easy repair and maintenance.

[0054] Further, if Figure 1 As shown, the protective window 15 is made of a transparent acrylic plate to facilitate observation of the working conditions.

[0055] Further, if Figure 1 As shown, the four corners of the bottom of the machine 11 are provided with casters 16 with supporting functions; when it is necessary to carry it, the foot cups can be put away and moved by the casters 16; during daily work, the foot cups can be put down to play a supporting role.

[0056] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. An automatic pipe chamfering grinding machine, characterized in that: It includes a machine platform, a YZ axis linear module arranged on the machine platform, a fixture arranged at the driving end of the YZ axis linear module for clamping a pipe interface, and a grinding forward mechanism arranged horizontally on the machine platform for chamfering and grinding the pipe interface on the fixture; The grinding forward mechanism includes a base, a movable plate horizontally slidably arranged on the base, a motor horizontally arranged on the movable plate with a driving end pointing to the fixture, an inner chamfer grinder arranged at the driving end of the motor, and an electric cylinder horizontally arranged on the base for driving the motor to approach or move away from the fixture; a pressure sensor is arranged between the driving end of the electric cylinder and the motor.

2. The automatic pipe chamfering grinding machine according to claim 1 is characterized in that: The driving shaft of the electric cylinder, the driving shaft of the motor and the inner chamfering grinder are all arranged on the same center line.

3. The automatic pipe chamfering grinding machine according to claim 1 is characterized in that: The grinding forward mechanism also includes a support seat arranged on the movable plate and located between the motor and the clamp, a tool sleeve arranged on the support seat and placed coaxially with the motor, a bearing arranged between the tool sleeve and the support seat, and a coupling for connecting the tool sleeve and the motor drive end; the inner chamfer grinding tool is disassembled and arranged at the end of the tool sleeve.

4. The automatic pipe chamfering grinding machine according to claim 3 is characterized in that: The grinding forward mechanism also includes a dust cover arranged on the base; the electric cylinder to the tool sleeve part are all arranged in the dust cover.

5. The automatic pipe chamfering grinding machine according to any one of claims 1 to 4, characterized in that: The fixture includes a mounting seat vertically arranged at the driving end of the YZ-axis linear module, a fixed clamping block arranged at the bottom of the mounting seat, a support plate arranged at the top of the mounting seat, a slide groove vertically arranged on the mounting seat and located between the fixed clamping block and the support plate, a movable clamping block slidably arranged in the slide groove and placed opposite to the fixed clamping block, and a lifting cylinder vertically arranged on the support plate for driving the sliding clamping block to rise and fall.

6. The automatic pipe chamfering grinding machine according to claim 5, characterized in that: The clamping surfaces of the fixed clamping block and the movable clamping block are also provided with detachable clamping heads; and the clamping heads are provided with semicircular clamping grooves.

7. The automatic pipe chamfering grinding machine according to claim 6, characterized in that: The clamping head is provided with a plurality of parallel clamping slots of different sizes.

8. The automatic pipe chamfering grinding machine according to claim 5, characterized in that: The YZ-axis linear module includes a Y-axis linear module horizontally arranged on the machine platform and placed vertically with the electric cylinder, and a Z-axis linear module vertically arranged on the driving end of the Y-axis linear module; the mounting seat is vertically arranged at the driving end of the Z-axis linear module.

9. The automatic pipe chamfering grinding machine according to claim 1, characterized in that: The machine platform is provided with a protective cover with a front opening; the protective cover is provided with safety gratings on both sides of the front opening.

10. The automatic pipe chamfering grinding machine according to claim 9, characterized in that: The front of the protective cover is provided with a touch screen and operation buttons, and the top is provided with a three-color indicator light; the bottom of the machine platform is provided with a plurality of casters with supporting functions.

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