Screwer for equidistant continuous cutting of metal pipes, cutting equipment and using method

Abstract

The invention discloses a screwer for equidistant continuous cutting of metal pipes, cutting equipment and a using method, the screwer comprises a screwer cylinder and blades, the screwer cylinder is of a cylindrical structure, and the blades of a linear structure are spirally arranged on the circumferential surface of the screwer cylinder from one end to the other end; the height of a blade on the threaded cutter cylinder is gradually increased from one end to the other end, the threaded cutter cylinder and a metal pipe are arranged in parallel during use, when the metal pipe is axially conveyed, the threaded cutter cylinder and the metal pipe synchronously rotate, the distance between the blade and the axis of the metal pipe is gradually reduced due to the fact that the height of the blade is gradually increased, and then the metal pipe is cut off. According to the metal pipe cutting device, the metal pipe can be continuously cut through rotation of the threaded cutter cylinder and the metal pipe, the machining efficiency is effectively improved, it can be guaranteed that the cut metal pipe is consistent in length through the thread pitch change of the cutting edge on the threaded cutter cylinder, and the cutting effect is effectively improved.

Description

Technical Field

[0001] The invention relates to a thread cutter for equidistant and continuous cutting of metal pipes, and in particular to a thread cutter, a cutting device and a use method thereof for equidistant and continuous cutting of metal pipes. Background Art

[0002] In the field of mechanical processing, it is often necessary to produce a large number of circular ring parts of the same length, such as bearing sleeve blanks. Such circular ring parts are currently usually cut mechanically in the industry.

[0003] Although this method can process circular ring parts, it still has the following defects:

[0004] 1. In this method, the metal tube is at room temperature during the cutting process, the cutting speed is slow, and the processing efficiency is low.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0006] The purpose of the present invention is to overcome the disadvantage of low processing efficiency in the prior art and to provide a thread cutter, cutting equipment and use method for equidistant continuous cutting of metal pipes with high processing efficiency.

[0007] To achieve the above objectives, the technical solution of the present invention is:

[0008] A thread cutter for equidistant and continuous cutting of a metal pipe, the thread cutter comprising a thread cutter barrel and a blade,

[0009] The threaded cutter barrel is a cylindrical structure, and a linear structure of cutting blades arranged in a spiral is provided along the circumferential surface of the threaded cutter barrel from one end to the other end, and the height of the cutting blades on the threaded cutter barrel gradually increases from one end to the other end.

[0010] A cutting device for equidistant and continuous cutting of metal pipes, comprising: a base, a power system and a cutting system;

[0011] The base is placed horizontally, and the power system and the cutting system are respectively arranged at two ends of the base. A metal tube rotating system is arranged on the side of the cutting system away from the power system. The power system is used to provide power for the cutting system and the metal tube rotating system. The cutting system includes a plurality of thread cutters, and the plurality of thread cutters are arranged rotationally symmetrically. The central axis of each thread cutter is arranged parallel to the central axis of the metal tube. The thread cutter rotates along its central axis under the drive of the power system. The end of the thread cutter with a small blade height is arranged close to the metal tube rotating system. The thread cutter is used for equidistant and continuous cutting of metal tubes. The metal tube rotating system is used to rotate the metal tube. The rotation direction of the thread cutter barrel is opposite to the rotation direction of the metal tube. The metal tube moves from the cutting system to the power system during the cutting process.

[0012] Three thread cutters are arranged in the cutting system.

[0013] The cutting system also includes a positioning bracket, which is arranged on the top of the base. A through hole matching the metal tube is opened in the middle of the positioning bracket in the horizontal direction. A plurality of threaded knife barrels are arranged on the positioning bracket along the circumferential direction of the through hole. The threaded knife barrels are matched with the power output end of the power system in transmission.

[0014] The distance between the central axis of the metal tube and the tip of the blade is D, the distance D between the tip of the blade at the inlet of the cutting system and the central axis of the metal tube is greater than the radius of the outer circle of the metal tube, and the distance D between the tip of the blade at the outlet of the cutting system and the central axis of the metal tube is less than the radius of the inner circle of the metal tube.

[0015] The positioning bracket includes two positioning plates arranged parallel to each other and a plurality of distance columns. The two positioning plates are arranged perpendicular to the base. The two positioning plates are fixedly connected to the two ends of the plurality of distance columns respectively. The plurality of threaded cutter cylinders are arranged between the two positioning plates. Each of the threaded cutter cylinders is arranged perpendicular to the positioning plates. Both ends of the threaded cutter cylinders are rotatably matched with the positioning plates on their corresponding sides.

[0016] The power system includes a motor, a reducer and multiple transmission shafts. The power output end of the motor is fixedly connected to the power input end of the reducer. The reducer has multiple power output ends. A transmission shaft is provided on each power output end of the reducer. Each transmission shaft is respectively matched with a threaded cutter barrel for transmission.

[0017] The metal tube rotation system includes a shell, a rotating sleeve and a transmission gear. The shell is arranged on a positioning bracket. The rotating sleeve and the transmission gear are both arranged in the shell. The rotating sleeve and the transmission gear are coaxially connected to form an integrated structure. The shell and the rotating sleeve are both provided with holes that match the metal tube. The rotating sleeve is used to be sleeved on the metal tube and clamp the metal tube. The transmission gear is matched with one of the threaded cutter barrels for transmission.

[0018] The cutting device also includes a cooling system, which is used to cool the power system, the cutting system and the metal pipe rotating system.

[0019] A method for using a cutting device for equidistant and continuous cutting of a metal pipe, the method comprising the following steps:

[0020] S1, firstly heat the metal tube to the cutting temperature, insert the preheated metal tube into the metal tube rotating system, start the system at the same time, and move the metal tube toward the power system. When the metal tube moves to contact with the blades on each threaded cutter barrel at the same time, enter S2;

[0021] S2. The spiral blades on each threaded cutter barrel cut the metal tube in turn and form multiple cutting marks with equal spacing on the metal tube. As the threaded cutter barrel and the metal tube rotate, the multiple cutting marks are connected end to end to form multiple circular cutting marks with equal spacing. As the metal tube continues to move, the height of the blade on the threaded cutter barrel gradually increases, and the cutting depth of the blade on the metal tube gradually increases until the metal tube is cut off.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In a thread cutter for equidistant continuous cutting of metal pipes of the present invention, the thread cutter barrel is a cylindrical structure, and a blade of a linear structure arranged in a spiral is arranged from one end to the other end along the circumferential surface of the thread cutter barrel. The height of the blade on the thread cutter barrel gradually increases from one end to the other end. When in use, the thread cutter barrel is arranged parallel to the metal pipe, and the blade contacts the metal pipe. When the metal pipe is axially transported, the thread cutter barrel and the metal pipe rotate in opposite directions. As the blade height gradually increases, the distance between the blade and the axis of the metal pipe gradually decreases, thereby cutting off the metal pipe. During this process, the rotating axes of the metal pipe and the thread cutter barrel are relatively stationary, and no reciprocating motion is required, so that continuous cutting can be achieved. Therefore, the design can continuously cut the metal pipe by rotating the thread cutter barrel and the metal pipe, effectively improving the processing efficiency.

[0024] 2. In a cutting device for equidistant continuous cutting of metal pipes of the present invention, the cutting system includes a plurality of threaded cutter cylinders arranged in parallel with each other, each threaded cutter cylinder is arranged along the circumferential direction of the metal pipe, each threaded cutter cylinder rotates synchronously, and the blades on each threaded cutter cylinder are arranged correspondingly to the contacting parts of the metal pipe, and each threaded cutter cylinder is used to limit the metal pipe, and each threaded cutter cylinder cuts the metal pipe at the same time, further improving the processing efficiency. Therefore, the present design can cut the metal pipe at the same time by multiple threaded cutter cylinders, further improving the processing efficiency.

[0025] 3. In the cutting device for equidistant continuous cutting of metal pipes of the present invention, the pitch of the blades on the threaded cutter barrel gradually increases from one end to the other end, ensuring that the distances between the intersections of the blades of each threaded cutter and the outer diameter of the metal pipe are basically the same or increase or decrease according to a certain rule. Therefore, the design can ensure the same length of the cut metal pipe by changing the pitch of the blades on the threaded cutter barrel, effectively improving the cutting effect.

[0026] 4. In the method for using a cutting device for equidistant continuous cutting of a metal tube of the present invention, the rotation direction of the threaded cutter barrel is opposite to that of the metal tube, and the metal tube moves from the cutting system to the power system during the conveying process. When the threaded cutter rotates one circle, the advancing distance of the metal tube is the same as the spacing x between adjacent blades, so that the cutting marks of the threaded cutter barrel on the metal tube can form a complete circle, and the circle is located in the cross section of the metal tube, thereby cutting out a circular ring. Therefore, the design can cut out a circular ring by coordinating the conveying speed and rotation speed of the metal tube with the rotation speed of the threaded cutter barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The invention is a schematic structural diagram of a thread cutter for equidistant and continuous cutting of metal pipes.

[0028] Figure 2 It is a schematic structural diagram of a cutting device for equidistant and continuous cutting of metal pipes according to the present invention.

[0029] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle base.

[0030] Figure 4 yes Figure 2 Schematic diagram of the structure of the medium reducer.

[0031] Figure 5 yes Figure 2 Schematic diagram of the internal structure of the medium reducer.

[0032] Figure 6 yes Figure 2 Schematic diagram of the structure of the cutting system.

[0033] Figure 7yes Figure 2 Schematic diagram of the structure of the cutting system from another perspective.

[0034] Figure 8 yes Figure 7 Schematic diagram of the structure of the medium thread cutter barrel.

[0035] Fig. 9 yes Figure 2 Working status diagram of the medium thread cutter barrel.

[0036] Fig.10 yes Figure 1 Schematic diagram of the structure of the middle blade.

[0037] Fig.11 yes Figure 1 Schematic diagram of the structure of the metal tube rotation system.

[0038] Fig.12 yes Figure 1 Schematic diagram of the internal structure of the metal tube rotation system.

[0039] Fig.13 yes Figure 5 Schematic diagram of the matching relationship between the thread cutter barrel and the metal tube.

[0040] Fig.14 yes Figure 1 Schematic diagram of the cooling system.

[0041] In the figure: thread cutter 1, thread cutter cylinder 11, blade 12, base 2, power system 3, motor 31, reducer 32, transmission shaft 33, cutting system 4, positioning bracket 41, through hole 42, positioning plate 43, distance column 44, metal tube rotation system 5, shell 51, rotating sleeve 52, transmission gear 53, cooling system 6. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Embodiment 1:

[0044] See also Figure 1 A thread cutter for equidistant and continuous cutting of metal pipes, the thread cutter 1 comprising a thread cutter barrel 11 and a blade 12,

[0045] The threaded cutter barrel 11 is a cylindrical structure, and a linear structure of cutting edges 12 arranged in a spiral from one end to the other end are provided on the circumferential surface of the threaded cutter barrel 11 . The height of the cutting edges 12 on the threaded cutter barrel 11 gradually increases from one end to the other end.

[0046] Embodiment 2:

[0047] See also Figures 2 to 14, a cutting device for equidistant and continuous cutting of metal pipes, comprising: a base 2, a power system 3 and a cutting system 4;

[0048] The base 2 is placed horizontally, and the power system 3 and the cutting system 4 are respectively arranged at two ends of the base 2. A metal tube rotating system 5 is arranged on the cutting system 4 away from the power system 3. The power system 3 is used to provide power for the cutting system 4 and the metal tube rotating system 5. The cutting system 4 includes a plurality of thread cutters 1. The plurality of thread cutters 1 are arranged rotationally symmetrically. The central axis of each thread cutter 1 is arranged parallel to the central axis of the metal tube. The thread cutter 1 rotates along its central axis under the drive of the power system 3. The end of the thread cutter 1 with a smaller height of the blade 12 is arranged close to the metal tube rotating system 5. The thread cutter 1 is used for equidistant and continuous cutting of the metal tube. The metal tube rotating system 5 is used to rotate the metal tube. The rotation direction of the thread cutter barrel 11 is opposite to that of the metal tube. The metal tube moves from the cutting system 4 to the power system 3 during the cutting process.

[0049] Three thread cutters 1 are arranged in the cutting system 4 .

[0050] The cutting system 4 also includes a positioning bracket 41, which is arranged on the top of the base 2. A through hole 42 that matches the metal pipe is opened in the middle of the positioning bracket 41 in the horizontal direction. A plurality of threaded knife barrels 11 are arranged on the positioning bracket 41 along the circumferential direction of the through hole 42. The threaded knife barrels 11 are matched with the power output end of the power system 3 in transmission.

[0051] The distance between the central axis of the metal tube and the tip of the blade 12 is D. The distance D between the tip of the blade 12 at the inlet of the cutting system 4 and the central axis of the metal tube is greater than the radius of the outer circle of the metal tube. The distance D between the tip of the blade 12 at the outlet of the cutting system 4 and the central axis of the metal tube is less than the radius of the inner circle of the metal tube.

[0052] The positioning bracket 41 includes two positioning plates 43 arranged parallel to each other and a plurality of distance columns 44. The two positioning plates 43 are arranged perpendicular to the base 2. The two positioning plates 43 are fixedly connected to both ends of the plurality of distance columns 44 respectively. The plurality of threaded cutter barrels 11 are arranged between the two positioning plates 43. Each of the threaded cutter barrels 11 is arranged perpendicular to the positioning plates 43. Both ends of the threaded cutter barrel 11 are rotatably matched with the positioning plates 43 on the corresponding sides.

[0053] The power system 3 includes a motor 31, a reducer 32 and a plurality of transmission shafts 33. The power output end of the motor 31 is fixedly connected to the power input end of the reducer 32. The reducer 32 has a plurality of power output ends. A transmission shaft 33 is provided on each power output end of the reducer 32. Each transmission shaft 33 is respectively matched with a threaded cutter barrel 11 for transmission.

[0054] The metal tube rotating system 5 includes a shell 51, a rotating sleeve 52 and a transmission gear 53. The shell 51 is arranged on the positioning bracket 41. The rotating sleeve 52 and the transmission gear 53 are both arranged in the shell 51. The rotating sleeve 52 and the transmission gear 53 are coaxially connected to form an integrated structure. The shell 51 and the rotating sleeve 52 are both provided with holes that match the metal tube. The rotating sleeve 41 is used to be sleeved on the metal tube and clamp the metal tube. The transmission gear 53 is matched with one of the threaded cutter barrels 11 for transmission.

[0055] The cutting device further comprises a cooling system 6 , and the cooling system 6 is used to cool the power system 3 , the cutting system 4 and the metal pipe rotating system 5 .

[0056] Embodiment 3:

[0057] See also Fig.13 , a method for using a cutting device for equidistant and continuous cutting of metal pipes, characterized in that:

[0058] The method of use comprises the following steps:

[0059] S1, firstly, heat the metal tube to a cutting temperature, insert the preheated metal tube into the metal tube rotating system 5, start the system at the same time, and move the metal tube toward the power system 3. When the metal tube moves to contact with the blades 12 on each threaded cutter barrel 11 at the same time, enter S3;

[0060] S2. The spiral blades 12 on each threaded cutter barrel 11 cut the metal tube in turn and form a plurality of equally spaced cutting marks on the metal tube. As the threaded cutter barrel 11 and the metal tube rotate, the plurality of cutting marks are connected end to end to form a plurality of equally spaced circular cutting marks. As the metal tube continues to move, the height of the blade 12 on the threaded cutter barrel 11 gradually increases, and the cutting depth of the blade 12 on the metal tube gradually increases until the metal tube is cut off.

[0061] Embodiment 4:

[0062] The blade 12 is a non-equidistant spiral structure, and the height of the blade 12 on the threaded cutter barrel 11 can increase at a linear rate or a nonlinear rate.

[0063] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A thread cutter for equidistant and continuous cutting of metal pipes, characterized in that: The thread cutter (1) comprises a thread cutter barrel (11) and a cutting edge (12). The threaded cutter barrel (11) is a cylindrical structure, and a linear structured cutting edge (12) arranged in a spiral is provided along the circumferential surface of the threaded cutter barrel (11) from one end to the other end, and the height of the cutting edge (12) on the threaded cutter barrel (11) gradually increases from one end to the other end.

2. A cutting device for equidistant and continuous cutting of metal pipes, characterized in that: include: Base (2), power system (3) and cutting system (4); The base (2) is placed horizontally, the power system (3) and the cutting system (4) are respectively arranged at two ends of the base (2), and a metal tube rotating system (5) is arranged on the side of the cutting system (4) away from the power system (3). The power system (3) is used to provide power for the cutting system (4) and the metal tube rotating system (5). The cutting system (4) comprises a plurality of thread cutters (1) as claimed in claim 1, the plurality of thread cutters (1) are arranged in rotational symmetry, the central axis of each of the thread cutters (1) is arranged parallel to the central axis of the metal tube, the thread cutter (1) rotates along its central axis under the drive of the power system (3), the end of the thread cutter (1) with a smaller blade (12) height is arranged close to the metal tube rotating system (5), the thread cutter (1) is used to cut the metal tube continuously at equal intervals, the metal tube rotating system (5) is used to rotate the metal tube, the rotation direction of the thread cutter cylinder (11) is opposite to the rotation direction of the metal tube, and the metal tube moves from the cutting system (4) to the power system (3) during the cutting process.

3. The cutting device for equidistant and continuous cutting of metal pipes according to claim 2, characterized in that: Three thread cutters (1) are arranged in the cutting system (4).

4. A cutting device for equidistant and continuous cutting of metal pipes according to claim 2 or 3, characterized in that: The cutting system (4) further comprises a positioning bracket (41), wherein the positioning bracket (41) is arranged on the top of the base (2), and a through hole (42) is opened in the middle of the positioning bracket (41) in the horizontal direction to match the metal tube, and a plurality of the threaded knife barrels (11) are arranged on the positioning bracket (41) along the circumferential direction of the through hole (42), and the threaded knife barrels (11) are matched with the power output end of the power system (3) in transmission.

5. The cutting device for equidistant and continuous cutting of metal pipes according to claim 4, characterized in that: The distance D between the central axis of the metal tube and the tip of the blade (12) is greater than the radius of the outer ring of the metal tube at the inlet of the cutting system (4), and the distance D between the tip of the blade (12) and the central axis of the metal tube at the outlet of the cutting system (4) is less than the radius of the inner ring of the metal tube.

6. The cutting device for equidistant and continuous cutting of metal pipes according to claim 4, characterized in that: The positioning bracket (41) comprises two positioning plates (43) arranged parallel to each other and a plurality of distance columns (44); the two positioning plates (43) are arranged perpendicular to the base (2); the two positioning plates (43) are respectively fixedly connected to two ends of the plurality of distance columns (44); the plurality of threaded cutter cylinders (11) are arranged between the two positioning plates (43); each of the threaded cutter cylinders (11) is arranged perpendicular to the positioning plates (43); and both ends of the threaded cutter cylinders (11) are rotatably matched with the positioning plates (43) on the corresponding sides thereof.

7. A cutting device for equidistant and continuous cutting of metal pipes according to claim 2 or 3, characterized in that: The power system (3) comprises a motor (31), a reducer (32) and a plurality of transmission shafts (33); the power output end of the motor (31) is fixedly connected to the power input end of the reducer (32); the reducer (32) has a plurality of power output ends; each power output end of the reducer (32) is provided with a transmission shaft (33); each transmission shaft (33) is respectively in transmission cooperation with a threaded cutter barrel (11).

8. A cutting device for equidistant and continuous cutting of metal pipes according to claim 2 or 3, characterized in that: The metal tube rotating system (5) comprises a housing (51), a rotating sleeve (52) and a transmission gear (53); the housing (51) is arranged on a positioning bracket (41); the rotating sleeve (52) and the transmission gear (53) are both arranged in the housing (51); the rotating sleeve (52) and the transmission gear (53) are coaxially connected to form an integral structure; holes matching the metal tube are provided on the housing (51) and the rotating sleeve (52); the rotating sleeve (41) is used to be sleeved on the metal tube and clamp the metal tube; the transmission gear (53) is matched with one of the threaded cutter barrels (11) in transmission.

9. A cutting device for equidistant and continuous cutting of metal pipes according to claim 2 or 3, characterized in that: The cutting device further comprises a cooling system (6), wherein the cooling system (6) is used to cool the power system (3), the cutting system (4) and the metal pipe rotating system (5).

10. A method for using a cutting device for equidistant and continuous cutting of metal pipes according to claims 2 to 9, characterized in that: The method of use comprises the following steps: S1, firstly, heat the metal tube to a cutting temperature, insert the preheated metal tube into the metal tube rotating system (5), start the system at the same time, and move the metal tube toward the power system (3). When the metal tube moves to contact with the blades (12) on each threaded cutter barrel (11) at the same time, enter S2; S2. The spiral blades (12) on the threaded cutter barrels (11) cut the metal tube in sequence and form a plurality of cutting marks at equal intervals on the metal tube. As the threaded cutter barrels (11) and the metal tube rotate, the plurality of cutting marks are connected end to end to form a plurality of circular cutting marks at equal intervals. As the metal tube continues to move, the height of the blades (12) on the threaded cutter barrels (11) gradually increases, and the cutting depth of the blades (12) on the metal tube gradually increases until the metal tube is cut off.

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