Oxygen-free copper groove straight pipe saw blade cutting device and preparation method

Abstract

The invention discloses an oxygen-free copper groove straight pipe saw blade cutting device which comprises a conveying cylinder assembly used for conveying a straight pipe, an annular rotating assembly is arranged on the end face of the conveying cylinder assembly, and a radial moving assembly is arranged on the annular rotating assembly. The radial moving assembly is provided with a saw blade cutting device arranged in the axis direction of the conveying cylinder assembly, the conveying cylinder assembly is sleeved with a lantern ring capable of moving in the axial direction of the conveying cylinder assembly, and a linkage assembly is arranged between the lantern ring and the radial moving assembly. A push rod motor is fixedly arranged on the conveying cylinder assembly, a pushing assembly is arranged between the push rod motor and the lantern ring, through mechanical structure innovation and process optimization, the problems that in a traditional process, adaptability is poor, precision is low, and efficiency is low are solved, and automatic adjustment of the cutting path, motion decoupling and procedure simplification are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal pipe processing, in particular to a groove straight pipe saw blade cutting device and preparation method of oxygen-free copper. BACKGROUND

[0002] Under the development trend of chip and electronic device miniaturization and high performance, the machining precision and production efficiency of oxygen-free copper groove straight pipe as a core heat transfer component have become the industry bottleneck. The traditional cutting process has the following outstanding problems: relying on manual adjustment of the cutting path to adapt to different pipe diameters, tedious and time-consuming adjustment, difficult to meet the needs of automatic batch production. The mechanical structure does not realize the decoupling of axial movement and circumferential rotation, and interference occurs during cutting, resulting in insufficient cutting precision and pipe deformation, affecting the size consistency and tooth shape quality; the cutting process and forming spinning process have poor coordination, and multiple empty drawing and annealing are required, the process is long, the energy consumption is high, and the yield is difficult to improve.

[0003] Therefore, it is urgent to develop a new device with automatic path adjustment function, high precision cutting capacity and coordination with forming process and short process preparation method.

[0004] Therefore, the existing metal pipe processing technology field needs to be further improved. SUMMARY

[0005] The purpose of the present application is to provide a groove straight pipe saw blade cutting device and preparation method of oxygen-free copper, through mechanical structure innovation and process optimization, solve the problems of poor adaptability, low precision and low efficiency in traditional process, realize automatic adjustment of cutting path, motion decoupling and process simplification.

[0006] In order to achieve the above purpose, the present application adopts the following scheme: A groove straight pipe saw blade cutting device of oxygen-free copper, comprising a conveying cylinder assembly for conveying a straight pipe, an annular rotating assembly is arranged on the end face of the conveying cylinder assembly, a radial moving assembly is arranged on the annular rotating assembly, a saw blade cutting device is arranged on the radial moving assembly and faces the axis direction of the conveying cylinder assembly, a sleeve ring capable of moving in the axial direction of the conveying cylinder assembly is arranged outside the conveying cylinder assembly, a linkage assembly is arranged between the sleeve ring and the radial moving assembly, a push rod motor is fixedly arranged on the conveying cylinder assembly, a pushing assembly is arranged between the push rod motor and the sleeve ring, and the pushing assembly always pushes the sleeve ring at different angles to move in the axial direction.

[0007] Further, the conveying cylinder assembly comprises a positioning cylinder, the positioning cylinder is provided with a mounting seat, and the positioning cylinder is provided with auxiliary rollers uniformly distributed around the center circumference of the positioning cylinder on one end face.

[0008] Further, the annular rotating assembly comprises an annular guide rail arranged on the other end surface of the positioning cylinder, a rotating ring body is rotationally arranged in the annular guide rail, a driving motor is arranged on the side wall of the positioning cylinder, a driving gear is arranged at the output end of the driving motor, a driven gear is arranged on the circumferential outer wall of the rotating ring body, and the driving gear and the driven gear are in meshing transmission.

[0009] Further, the radial moving assembly comprises a radial extension plate arranged on the rotating ring body, a radial straight groove is arranged on the radial extension plate, and a radial sliding block is movably arranged in the radial straight groove.

[0010] Further, the linkage assembly comprises a guide hole arranged on the radial extension plate, a guide rod is movably arranged in the guide hole, the guide rod is fixedly connected with the sleeve ring and synchronously axially moves with the sleeve ring, a first hinged seat is arranged on the guide rod, a second hinged seat is arranged on the radial sliding block, and a connecting rod is hinged between the first hinged seat and the second hinged seat.

[0011] Further, the pushing assembly comprises an axial movable ring arranged at the output end of the push rod motor, the axial movable ring is sleeved outside the positioning cylinder, an annular mounting groove is arranged on the end surface of the sleeve ring, a synchronous annular groove is arranged on the inner wall of the annular mounting groove, a synchronous annular protrusion is arranged on the circumferential outer wall of the axial movable ring, the sleeve ring is rotationally arranged in the annular mounting groove, and the synchronous annular groove and the synchronous annular protrusion are matched and arranged to keep the sleeve ring and the axial movable ring synchronously axially move.

[0012] Further, the synchronous annular groove and the synchronous annular protrusion are matched and arranged to prevent the sleeve ring from rotating relative to the circumferential direction of the axial movable ring.

[0013] A preparation method of an oxygen-free copper groove straight pipe, comprising the following steps: S1, pipe blank pretreatment, selecting an oxygen-free copper pipe blank, controlling the outer diameter of the pipe blank to be 1.1-1.5 times the outer diameter of the finished product, and the wall thickness to be 0.85-1.10 times the wall thickness of the finished product; S2, online annealing, the pipe blank is subjected to online annealing treatment to eliminate processing stress and make the hardness of the pipe blank meet the subsequent spinning forming requirements; S3, forming spinning and air drawing, a full ball type steel ball spinning process is adopted to form the groove structure by a special air drawing die; S4, saw blade cutting and path adjustment, using a saw blade cutting device to cut the straight pipe after forming to a fixed length, the cutting device comprising: according to the diameter of the straight pipe, the sleeve shaft is moved axially by the push rod motor, the sleeve moves the radial slider of the radial movement assembly along the radial straight slot through the guide rod and connecting rod of the linkage assembly, so that the distance between the cutting blade of the saw blade cutting device and the axis of the conveying cylinder assembly is equal to the radius of the straight pipe, thereby adjusting the size of the saw blade cutting circumferential path; S5, straightening and finished product packaging, the cut straight pipe is straightened and packaged after passing the test.

[0014] Further, the rotating ring body of the annular rotating assembly in step S4 is driven by the main motor to drive the main gear and the passive gear to mesh and transmit, driving the saw blade cutting device to rotate around the axis of the straight pipe, realizing the movement of the circumferential cutting path.

[0015] Further, the radial movement stroke of the saw blade cutting device in step S4 is linearly related to the diameter of the straight pipe, and the radius of the saw blade cutting circumferential path is accurately controlled by pre-setting the axial pushing distance of the push rod motor.

[0016] In summary, the present application has the following advantages over the prior art: The present application solves the problems existing in the prior art of metal pipe processing technology. Through the structure of the present application, the following advantages are achieved: automatic path adjustment without manual intervention, simplified production process, improved efficiency, and reduced energy consumption by 20%. Motion decoupling design avoids interference, high cutting edge flatness, and excellent size consistency. Through the linkage of the push rod motor and the linkage assembly, the straight pipe cutting of different diameters can be quickly adapted to meet the diversified production needs; the forming spinning and cutting process are coordinated to reduce the damage to the tooth shape caused by traditional multiple empty drawing, combined with eddy current flaw detection, and the comprehensive performance of the finished product is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is one of the perspective views of the invention; Figure 2 is the second perspective view of the invention; Figure 3 is the top view of the invention; Figure 4 is the front view of the invention; Figure 5 is the sectional view of the invention. DETAILED DESCRIPTION

[0018] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0019] Please refer to Figures 1-5 The present application provides An oxygen-free copper trench straight pipe saw blade cutting device, comprising a conveying cylinder assembly 1 for conveying a straight pipe, an annular rotating assembly 2 is arranged on the end face of the conveying cylinder assembly 1, a radial moving assembly 3 is arranged on the annular rotating assembly 2, a saw blade cutting device 4 is arranged on the radial moving assembly 3 and faces the axis direction of the conveying cylinder assembly 1, a sleeve ring 5 capable of moving in the axial direction of the conveying cylinder assembly 1 is arranged on the conveying cylinder assembly 1, a linkage assembly 6 is arranged between the sleeve ring 5 and the radial moving assembly 3, a push rod motor 7 is fixedly arranged on the conveying cylinder assembly 1, a pushing assembly 8 is arranged between the push rod motor 7 and the sleeve ring 5, and the pushing assembly 8 always pushes the sleeve ring 5 at different angles to move in the axial direction.

[0020] The conveying cylinder assembly 1 comprises a positioning cylinder 101, a mounting seat 102 is arranged on the positioning cylinder 101, and auxiliary rollers 103 are uniformly arranged around the center circumference of the positioning cylinder 101 on one end face of the positioning cylinder 101.

[0021] The annular rotating assembly 2 comprises an annular guide rail 201 arranged on the other end face of the positioning cylinder 101, a rotating ring body 202 is rotatably arranged in the annular guide rail 201, a driving motor 203 is arranged on the side wall of the positioning cylinder 101, a driving gear 204 is arranged at the output end of the driving motor 203, a driven gear 205 is arranged on the circumferential outer wall of the rotating ring body 202, and the driving gear 204 and the driven gear 205 are in meshing transmission.

[0022] The radial moving assembly 3 comprises a radial extension plate 301 arranged on the rotating ring body 202, a radial straight groove 302 is arranged on the radial extension plate 301, and a radial sliding block 303 is movably arranged in the radial straight groove 302.

[0023] The linkage assembly 6 comprises a guide hole 601 arranged on the radial extension plate 301, a guide rod 602 movably arranged in the guide hole 601, the guide rod 602 being fixedly connected with the sleeve ring 5 and moving synchronously with the sleeve ring 5, a first hinged seat 603 arranged on the guide rod 602, a second hinged seat 604 arranged on the radial slider 303, and a connecting rod 605 hinged between the first hinged seat 603 and the second hinged seat 604.

[0024] The pushing assembly 8 comprises an axial movable ring 801 arranged at the output end of the push rod motor 7, the axial movable ring 801 being sleeved on the positioning cylinder 101, the end surface of the sleeve ring 5 being provided with an annular mounting groove 802, an inner wall of the annular mounting groove 802 being provided with a synchronous annular groove 803, a circumferential outer wall of the axial movable ring 801 being provided with a synchronous annular boss 804, and the sleeve ring 5 being rotatably arranged in the annular mounting groove 802, the synchronous annular groove 803 and the synchronous annular boss 804 being cooperatively arranged to keep the sleeve ring 5 and the axial movable ring 801 moving synchronously in the axial direction. The straight pipe is supported and conveyed to the cutting position by the auxiliary roller 103 of the pipe conveying cylinder assembly, and the positioning cylinder 101 ensures that the axis of the straight pipe is aligned with the center of the device, thereby providing a stable reference for subsequent cutting.

[0025] Axial driving: according to the diameter of the straight pipe, the push rod motor 7 drives the axial movable ring 801 to move in the axial direction, and through the cooperation of the synchronous annular boss 804 and the synchronous annular groove 803, the sleeve ring 5 is driven to move along the positioning cylinder 101 in the axial direction.

[0026] Radial linkage: when the sleeve ring 5 moves, the linkage assembly 6 composed of the guide rod 602 and the connecting rod 605 pushes the radial slider 303 to move radially in the radial straight groove 302, so that the distance between the saw blade of the saw blade cutting device 4 and the axis is equal to the radius of the straight pipe, and the cutting path adjustment is completed.

[0027] The driving motor 203 drives the rotating ring body 202 to rotate around the axis of the positioning cylinder 101 through the meshing of the driving gear 204 and the driven gear 205, drives the radial movement assembly 3 and the saw blade cutting device 4 to rotate synchronously, and realizes 360° circular saw blade cutting.

[0028] The synchronous annular groove 803 and the synchronous annular boss 804 allow the sleeve ring 5 to rotate freely when moving in the axial direction, avoid the interference of axial movement on rotary cutting, and ensure the stability of the path.

[0029] Pipe blank pretreatment and annealing The pipe blank is selected with the outer diameter of 1.1-1.5 times of the finished product, the wall thickness of 0.85-1.10 times of the finished product bottom wall thickness, and the performance of 245-265 MPa of tensile strength and 40%-55% of elongation, stress is eliminated through on-line annealing, and the material hardness is adapted to spinning forming.

[0030] Forming spinning and air drawing The full ball type steel ball spinning process is adopted, plastic deformation with a total machining rate of 25-45% is used, the special air drawing die is used for one-time forming of the groove structure, the air drawing machining rate is controlled to be 15-25%, the tooth shape change and work hardening are reduced, and the tooth shape fullness is ensured to be greater than or equal to 95%.

[0031] Saw blade cutting and path coordination After the nozzle position is automatically adjusted according to the diameter of the straight pipe, the cutting nozzle is uniformly rotated by the rotating ring body 202, and the short process is used in 5 processes, so that the damage to the tooth shape caused by traditional multiple air drawing is avoided, and the forming and cutting processes are directly connected.

[0032] Straightening and finished product control After cutting, stress is eliminated through straightening, and indexes such as 48±1g / m of the micrometer weight, 295-305 MPa of the tensile strength and the like are detected, so that the finished product precision and performance are ensured to reach the standard.

[0033] The synchronous ring type groove 803 and the synchronous ring type boss 804 cooperate to prevent interference with the circumferential direction rotation of the collar 5 relative to the axial movable ring 801.

[0034] A method for preparing an oxygen-free copper groove straight pipe, comprising the following steps: S1, pipe blank pretreatment, selecting an oxygen-free copper pipe blank, controlling the outer diameter of the pipe blank to be 1.1-1.5 times of the finished product, and the wall thickness to be 0.85-1.10 times of the finished product bottom wall thickness; S2, on-line annealing, the pipe blank is subjected to on-line annealing treatment to eliminate processing stress, so that the hardness of the pipe blank meets the subsequent spinning forming requirements; S3, forming spinning and air drawing, a full ball type steel ball spinning process is adopted, and a special air drawing die is used for one-time forming of the groove structure; S4, saw blade cutting and path adjustment, a saw blade cutting device is used for fixed-length cutting of the formed straight pipe, the cutting device comprises: a push rod motor 7 is used to drive the collar 5 to move axially according to the diameter of the straight pipe, the collar 5 drives the radial movement assembly 3 to move along the radial straight groove 302 through the guide rod 602 and the connecting rod 605 of the linkage assembly 6, so that the distance between the cutting blade of the saw blade cutting device 4 and the axis of the conveying cylinder assembly 1 is equal to the radius of the straight pipe, thereby adjusting the size of the saw blade cutting circumferential path; S5, straightening and finished packaging, the straight pipe after cutting is straightened, and is packaged after being qualified.

[0035] The rotating ring body 202 of the annular rotating assembly 2 in step S4 of the application is driven by the main motor 203 to engage the main gear 204 and the passive gear 205 to drive the saw blade cutting device 4 to rotate around the straight pipe axis, realizing the movement of the circumferential cutting path.

[0036] The radial moving stroke of the saw blade cutting device 4 in step S4 of the application is linearly corresponding to the diameter of the straight pipe, and the radius of the saw blade cutting circumferential path is accurately controlled through the axial pushing distance of the preset push rod motor 7.

[0037] The basic principles and main features of the application and the advantages of the application are shown and described above, and those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application, and various changes and improvements can be made without departing from the spirit and scope of the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A cutting device for oxygen-free copper grooved straight pipe saw blade, characterized in that: The system includes a conveying cylinder assembly (1) for conveying straight pipes. The end face of the conveying cylinder assembly (1) is provided with an annular rotating assembly (2). The annular rotating assembly (2) is provided with a radial moving assembly (3). The radial moving assembly (3) is provided with a saw blade cutting device (4) facing the axial direction of the conveying cylinder assembly (1). The conveying cylinder assembly (1) is fitted with a collar (5) that can move along the axial direction of the conveying cylinder assembly (1). A linkage assembly (6) is provided between the collar (5) and the radial moving assembly (3). A push rod motor (7) is fixedly provided on the conveying cylinder assembly (1). A pushing assembly (8) is provided between the push rod motor (7) and the collar (5). The pushing assembly (8) always pushes the collar (5) at different angles to move axially.

2. The oxygen-free copper grooved straight pipe saw blade cutting device according to claim 1, characterized in that: The conveying cylinder assembly (1) includes a positioning cylinder (101), a mounting base (102) is provided on the positioning cylinder (101), and auxiliary rollers (103) are evenly distributed around the center circumference of the positioning cylinder (101) on one end face.

3. The oxygen-free copper grooved straight pipe saw blade cutting device according to claim 2, characterized in that: The annular rotating assembly (2) includes an annular guide rail (201) disposed on the other end face of the positioning cylinder (101), a rotating ring (202) is rotatably disposed inside the annular guide rail (201), an active motor (203) is disposed on the side wall of the positioning cylinder (101), an active gear (204) is disposed at the output end of the active motor (203), and a passive gear (205) is disposed on the outer circumference of the rotating ring (202), and the active gear (204) and the passive gear (205) mesh and drive each other.

4. The oxygen-free copper grooved straight pipe saw blade cutting device according to claim 3, characterized in that: The radial moving component (3) includes a radial extension plate (301) disposed on the rotating ring (202), a radial straight groove (302) disposed on the radial extension plate (301), and a radial slider (303) movably disposed in the radial straight groove (302).

5. The oxygen-free copper grooved straight pipe saw blade cutting device according to claim 4, characterized in that: The linkage component (6) includes a guide hole (601) disposed on the radial extension plate (301), a guide rod (602) is movably disposed in the guide hole (601), the guide rod (602) is fixedly connected to the collar (5) and moves axially synchronously with the collar (5), a first hinge seat (603) is disposed on the guide rod (602), a second hinge seat (604) is disposed on the radial slider (303), and a connecting rod (605) is hinged between the first hinge seat (603) and the second hinge seat (604).

6. The oxygen-free copper grooved straight pipe saw blade cutting device according to claim 5, characterized in that: The pushing assembly (8) includes an axial movable ring (801) disposed at the output end of the push rod motor (7). The axial movable ring (801) is sleeved on the outside of the positioning cylinder (101). The end face of the collar (5) is provided with an annular mounting groove (802). The inner wall of the annular mounting groove (802) is provided with a synchronous annular groove (803). The outer circumferential wall of the axial movable ring (801) is provided with a synchronous annular boss (804). The collar (5) is rotatably installed in the annular mounting groove (802). The synchronous annular groove (803) and the synchronous annular boss (804) cooperate to maintain the synchronous axial movement of the collar (5) and the axial movable ring (801).

7. The oxygen-free copper grooved straight pipe saw blade cutting device according to claim 6, characterized in that: The synchronous annular groove (803) and the synchronous annular boss (804) cooperate to prevent interference with the circumferential rotation of the collar (5) relative to the axial movable ring (801).

8. A method for preparing oxygen-free copper grooved straight pipe, comprising the oxygen-free copper grooved straight pipe saw blade cutting device as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Pre-treatment of tube blank: Select oxygen-free copper tube blank, control the outer diameter of the tube blank to be 1.1-1.5 times the outer diameter of the finished product, and the wall thickness to be 0.85-1.10 times the bottom wall thickness of the finished product; S2. Online annealing: The tube blank is annealed online to eliminate processing stress and make the hardness of the tube blank meet the requirements of subsequent spinning forming. S3. Forming spinning and air drawing: The full-ball steel ball spinning process is adopted, and the groove structure is formed in one step through a special air drawing mold. S4. Saw blade cutting and path adjustment: The saw blade cutting device is used to cut the straight pipe after forming to a fixed length. The cutting device includes: according to the diameter of the straight pipe, the push rod motor (7) pushes the collar (5) to move axially. The collar (5) drives the radial slider (303) of the radial moving component (3) to move along the radial straight groove (302) through the guide rod (602) and connecting rod (605) of the linkage component (6), so that the distance from the cutting blade of the saw blade cutting device (4) to the axis of the conveying cylinder component (1) is equal to the radius of the straight pipe, thereby adjusting the size of the saw blade cutting circumferential path. S5. Straightening and Finished Product Packaging: The cut straight pipes are straightened and packaged after passing the straightening process.

9. The method for preparing an oxygen-free copper trench straight tube according to claim 8, characterized in that: In step S4, the rotating ring (202) of the annular rotating component (2) drives the active gear (204) and the passive gear (205) to mesh and transmit through the active motor (203), thereby driving the saw blade cutting device (4) to rotate around the straight pipe axis and realize the movement of the circumferential cutting path.

10. The method for preparing an oxygen-free copper trench straight tube according to claim 9, characterized in that: In step S4, the radial movement stroke of the saw blade cutting device (4) is linearly related to the diameter of the straight pipe. The radius of the saw blade cutting circumference path is precisely controlled by the axial pushing distance of the preset push rod motor (7).

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