Automatic pit-digging device for pipe end forming

Abstract

The present invention discloses an automatic pit - punching device for pipe end - forming, comprising: a rotating mechanism, an adjusting screw rod, a limit seat, an adjusting block, a movable pin, a fixed pin, an upper limit block, a lower limit block, a linear driving mechanism, a base, an upper pressing block and a lower pressing block. When the linear driving mechanism moves away from the adjusting block, the distance between the upper pressing block and the lower pressing block is greater than the diameter of the pipe, and at this time the pipe can pass between the upper pressing block and the lower pressing block. When the linear driving mechanism approaches the adjusting block, the top of the lower limit block can contact the upper limit block, and after the top of the lower limit block contacts the upper limit block, the linear driving mechanism stops moving to complete pit - punching. By setting a sliding groove, when adapting to pipes of different sizes, the upper limit block can swing along with the movement of the adjusting block, ensuring that the pit - punching center line remains unchanged all the time during the process of adjusting the pit - punching depth. The present invention has a high degree of automation, the pit - punching depth is controllable, and the pit - punching center line remains unchanged all the time after adjusting the pit - punching depth.

Description

Technical Field

[0001] The present invention relates to a pipe end-making device, and particularly to an automatic pit-digging device for pipe end-making. Background Art

[0002] Currently, before drawing with a cam combined drawing machine, it is necessary to dig pits on the pipe. The main control element for pit-digging is the pit-digging depth. The pit-digging device drives a ball head by a hydraulic cylinder to dig pits, and then controls the pit-digging depth through pressure. Due to the large variety of pipe specifications processed, with significant differences in diameter and wall thickness, this design has great limitations. Simply controlling the pit-digging force to control the pit-digging depth easily results in uncontrollable pit-digging depth. Moreover, the ball head of the pressure head makes it difficult to align with the small-diameter pipe during pit-digging, and the pipe is prone to slipping off from both sides, leading to pit-digging failure. Summary of the Invention

[0003] In order to overcome the above defects, the present invention provides an automatic pit-digging device for pipe end-making, which has the advantages of high automation degree, controllable pit-digging depth, and the center line of pit-digging always remaining unchanged after adjusting the pit-digging depth.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an automatic pit-digging device for pipe end-making, including: a rotating mechanism, an adjusting screw rod, a limiting seat, an adjusting block, a movable pin, a fixed pin, an upper limiting block, a lower limiting block, a linear driving mechanism, a base, an upper pressing block, and a lower pressing block. The rotating mechanism is arranged at one end of the base, the limiting seat is arranged on the base, a first groove is arranged on the side of the limiting seat away from the rotating mechanism, the adjusting block is slidably arranged in the first groove, a threaded hole is arranged at the top of the adjusting block, the rod body of the adjusting screw rod is provided with threads, one end of the adjusting screw rod is connected to the execution end of the rotating mechanism, and the other end passes through the limiting seat and is rotatably connected to the threaded hole at the top of the adjusting block. An upper pressing block is arranged at the bottom of the adjusting block, two chutes perpendicular to the threaded hole are arranged on both sides of the adjusting block in a back-to-back manner, fixed pins are arranged at both corners of the side of the limiting seat away from the rotating mechanism, the upper limiting blocks are rod-shaped and there are two of them. One end of each upper limiting block is provided with a movable pin, the centers of the two upper limiting blocks are respectively rotatably arranged on the fixed pins, and the two movable pins are respectively slidably arranged in the adjacent chutes. The linear driving mechanism is arranged on the side of the base away from the rotating mechanism, the lower limiting block is slidably arranged on the base, the bottom of the lower limiting block is connected to the execution end of the linear driving mechanism, a second groove is arranged at the top of the lower limiting block, the lower pressing block is arranged in the second groove. The adjusting block can approach or move away from the lower limiting block under the drive of the rotating mechanism, and the lower limiting block can approach or move away from the adjusting block under the drive of the linear driving mechanism. When the linear driving mechanism moves away from the adjusting block, the distance between the upper pressing block and the lower pressing block is greater than the diameter of the pipe. When the linear driving mechanism approaches the adjusting block, the top of the lower limiting block can contact the upper limiting block.

[0005] Preferably, both the upper pressing block and the lower pressing block are straight-edge cutting pressing blocks, and the cutting edges of the upper pressing block and the lower pressing block are arranged opposite to each other and have the same height.

[0006] Preferably, the rotating mechanism is a servo motor, and its rotation is controlled by a PLC.

[0007] Preferably, a gland is arranged on the top of the limit seat, and the adjusting screw rod passes through the center of the gland.

[0008] Preferably, the adjusting screw rod is connected to the execution end of the rotating mechanism through a coupling.

[0009] Preferably, the linear driving mechanism is an oil cylinder.

[0010] The beneficial technical effects of the present invention are as follows: The automatic pit-digging device for pipe end forming includes a rotating mechanism, an adjusting screw rod, a limit seat, an adjusting block, a movable pin, a fixed pin, an upper limit block, a lower limit block, a linear driving mechanism, a base, an upper pressing block and a lower pressing block. The adjusting block can move closer to or away from the lower limit block under the drive of the rotating mechanism to adjust the pit-digging depth. The lower limit block can move closer to or away from the adjusting block under the drive of the linear driving mechanism to realize pit-digging. When the linear driving mechanism moves away from the adjusting block, the distance between the upper pressing block and the lower pressing block is greater than the diameter of the pipe, and at this time the pipe can pass through between the upper pressing block and the lower pressing block. When the linear driving mechanism moves closer to the adjusting block, the top of the lower limit block can contact the upper limit block, and after the top of the lower limit block contacts the upper limit block, the linear driving mechanism stops moving to complete pit-digging. The adjusting block is driven by the rotating mechanism to move to adapt to pipes of different sizes. By setting a chute, when adapting to pipes of different sizes, the upper limit block can swing along with the movement of the adjusting block, ensuring that the center line of pit-digging always remains unchanged during the process of adjusting the pit-digging depth. It has the advantages of high automation degree, controllable pit-digging depth, and the center line of pit-digging always remaining unchanged after adjusting the pit-digging depth. Description of the Drawings

[0011] Figure 1 is the top view of the whole machine of the present invention;

[0012] Figure 2 is Figure 1 the left sectional view taken along A-A of

[0013] Wherein:

[0014] 1. Rotating mechanism; 2. Coupling; 3. Adjusting screw rod;

[0015] 4. Gland; 5. Limit seat; 6. Adjusting block;

[0016] 7. Movable pin; 8. Fixed pin; 9. Upper limit block;

[0017] 10. Lower limit block; 11. Linear drive mechanism; 12. Base;

[0018] 13. Upper pressing block; 14. Lower pressing block; 15. Pipe;

[0019] 16. Slide groove. Detailed implementation manners

[0020] In order to better understand the technical means of the present invention and implement it according to the content of the specification, the following further describes the detailed implementation manners of the present invention in combination with the drawings and embodiments. The following embodiments are used to illustrate the present invention but not to limit the scope of the present invention.

[0021] This specific embodiment details the automatic pit punching device for pipe end forming described in the present application, as Figure 1 - Figure 2The automatic pit - punching device for pipe end - forming shown in the figure includes: a rotating mechanism 1, an adjusting screw rod 3, a limit seat 5, an adjusting block 6, a movable pin 7, a fixed pin 8, an upper limit block 9, a lower limit block 10, a linear driving mechanism 11, a base 12, an upper pressing block 13 and a lower pressing block 14. The rotating mechanism 1 is arranged at one end of the base 12. The limit seat 5 is arranged on the base 12. A first groove is arranged on the side of the limit seat 5 away from the rotating mechanism 1. The adjusting block 6 is slidably arranged in the first groove. A threaded hole is arranged at the top of the adjusting block 6. The rod body of the adjusting screw rod 3 is provided with threads. One end of the adjusting screw rod 3 is connected to the execution end of the rotating mechanism 1, and the other end passes through the limit seat 5 and is rotatably connected to the threaded hole at the top of the adjusting block 6. An upper pressing block 13 is arranged at the bottom of the adjusting block 6. Two chutes 16 perpendicular to the threaded hole are arranged on both sides of the adjusting block 6 in a back - to - back manner. Fixed pins 8 are arranged at both corners on the side of the limit seat 5 away from the rotating mechanism 1. The upper limit blocks 9 are rod - shaped and there are two of them. One end of each upper limit block 9 is provided with a movable pin 7. The centers of the two upper limit blocks 9 are respectively rotatably arranged on the fixed pins 8, and the two movable pins 7 are respectively slidably arranged in the adjacent chutes 16. The linear driving mechanism 11 is arranged on the side of the base 12 away from the rotating mechanism 1. The lower limit block 10 is slidably arranged on the base 12. The bottom of the lower limit block 10 is connected to the execution end of the linear driving mechanism 11. A second groove is arranged at the top of the lower limit block 10, and the lower pressing block 14 is arranged in the second groove. Driven by the rotating mechanism 1, it approaches or moves away from the lower limit block 10 to adjust the pit - punching depth. The lower limit block 10 can approach or move away from the adjusting block 6 driven by the linear driving mechanism 11 to realize pit - punching. When the linear driving mechanism 11 moves away from the adjusting block 6, the distance between the upper pressing block 13 and the lower pressing block 14 is greater than the diameter of the pipe 15, and at this time, the pipe 15 can pass through between the upper pressing block 13 and the lower pressing block 14. When the linear driving mechanism 11 approaches the adjusting block 6, the top of the lower limit block 10 can contact the upper limit block 9. After the top of the lower limit block 10 contacts the upper limit block 9, the linear driving mechanism 11 stops moving to complete pit - punching. By driving the adjusting block 6 to move through the rotating mechanism 1 to adapt to pipes 15 of different sizes, and by setting the chutes 16, when adapting to pipes 15 of different sizes, the upper limit block 9 can swing as the adjusting block 6 moves, ensuring that the center line of pit - punching always remains unchanged during the process of adjusting the pit - punching depth. It has the advantages of high automation degree, controllable pit - punching depth, and the center line of pit - punching always remaining unchanged after adjusting the pit - punching depth.

[0022] Preferably, in this embodiment, both the upper pressing block 13 and the lower pressing block 14 are linear knife - edge type pressing blocks. The knife edges of the upper pressing block 13 and the lower pressing block 14 are arranged opposite to each other and have the same height. Setting the upper pressing block 13 and the lower pressing block 14 as linear knife - edge type pressing blocks with the same height can adapt to pipes 15 of various sizes and prevent the pipes 15 from slipping sideways.

[0023] Preferably, in this embodiment, the rotating mechanism 1 is a servo motor, and its rotation is controlled by a PLC. Using a PLC to control the servo motor can be more convenient for control.

[0024] Preferably, in this embodiment, a gland 4 is provided on the top of the limit seat 5, and the adjusting screw rod 3 passes through the center of the gland 4. Providing the gland 4 on the top of the limit seat 5 can play a role in dust prevention.

[0025] Preferably, in this embodiment, the adjusting screw rod 3 is connected to the execution end of the rotating mechanism 1 through a coupling 2. Providing the coupling 2 between the adjusting screw rod 3 and the execution end of the rotating mechanism 1 can compensate for the offset between the two and can provide the function of overload protection.

[0026] Preferably, in this embodiment, the linear driving mechanism 11 is an oil cylinder. Setting the linear driving mechanism 11 as an oil cylinder can be more convenient for controlling the linear driving mechanism 11.

[0027] Using the automatic pit-digging device for pipe end forming in this embodiment has the advantages of high automation degree, controllable pit-digging depth, and the center line of pit-digging always remaining unchanged after adjusting the pit-digging depth.

Claims

1. An automatic pit - punching device for pipe end forming, characterized in that, Comprising: A rotating mechanism (1), an adjusting screw rod (3), a limit seat (5), an adjusting block (6), a movable pin (7), a fixed pin (8), an upper limit block (9), a lower limit block (10), a linear driving mechanism (11), a base (12), an upper pressing block (13) and a lower pressing block (14). The rotating mechanism (1) is arranged at one end of the base (12), the limit seat (5) is arranged on the base (12), a first groove is arranged on the side of the limit seat (5) away from the rotating mechanism (1), the adjusting block (6) is slidably arranged in the first groove, a threaded hole is arranged at the top of the adjusting block (6), the rod body of the adjusting screw rod (3) is provided with threads, one end of the adjusting screw rod (3) is connected to the execution end of the rotating mechanism (1), and the other end passes through the limit seat (5) and is rotatably connected to the threaded hole at the top of the adjusting block (6). An upper pressing block (13) is arranged at the bottom of the adjusting block (6), two chutes (16) perpendicular to the threaded hole are arranged on both sides of the adjusting block (6) in a back-to-back manner. Fixed pins (8) are arranged at both corners on the side of the limit seat (5) away from the rotating mechanism (1). The upper limit blocks (9) are rod-shaped and there are two of them. One end of each upper limit block (9) is provided with a movable pin (7). The centers of the two upper limit blocks (9) are respectively rotatably arranged on the fixed pins (8), and the two movable pins (7) are respectively slidably arranged in the adjacent chutes (16). The linear driving mechanism (11) is arranged on the side of the base (12) away from the rotating mechanism (1). The lower limit block (10) is slidably arranged on the base (12), the bottom of the lower limit block (10) is connected to the execution end of the linear driving mechanism (11), a second groove is arranged at the top of the lower limit block (10), and the lower pressing block (14) is arranged in the second groove. The adjusting block (6) can be driven by the rotating mechanism (1) to approach or move away from the lower limit block (10), and the lower limit block (10) can be driven by the linear driving mechanism (11) to approach or move away from the adjusting block (6). When the linear driving mechanism (11) moves away from the adjusting block (6), the distance between the upper pressing block (13) and the lower pressing block (14) is greater than the diameter of the pipe (15). When the linear driving mechanism (11) approaches the adjusting block (6), the top of the lower limit block (10) can contact the upper limit block (9). The rotating mechanism can drive the adjusting block to move to adapt to pipes of different sizes, and the upper limit block can swing as the adjusting block moves. The upper pressing block (13) and the lower pressing block (14) are both linear knife-edge pressing blocks, and the knife edges of the upper pressing block (13) and the lower pressing block (14) are arranged opposite to each other and have the same height.

2. The automatic pit-making device for pipe end forming according to claim 1, wherein: The rotating mechanism (1) is a servo motor and is controlled to rotate by a PLC.

3. The automatic pit-making device for pipe end forming according to claim 1, wherein: A gland (4) is arranged at the top of the limit seat (5), and the adjusting screw rod (3) passes through the center of the gland (4).

4. The automatic pit punching device for pipe end forming according to claim 1, characterized in that: The adjusting screw rod (3) is connected to the execution end of the rotating mechanism (1) through a coupling (2).

5. The automatic pit punching device for pipe end forming according to any one of claims 1-4, characterized in that: The linear driving mechanism (11) is an oil cylinder.

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