Fixed-length perforating device for metal pipe
By designing an automated fixed-length perforation device, the problems of low positioning efficiency and poor precision in traditional metal pipe perforation processing are solved, and automated fixed-length perforation adapted to different pipe diameters is achieved, which improves processing accuracy and reduces scrap rate.
Patent Information
- Application Number
- CN202511144478.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2025-10-10
AI Technical Summary
Traditional metal pipe perforation processing has the following problems: low manual positioning efficiency and difficulty in ensuring accuracy. The device is difficult to adapt to different pipe diameters. Fixed-length control relies on manual measurement and is prone to errors, resulting in poor processing accuracy, high scrap rate and increased production costs.
A fixed-length perforation device including a base, a material receiving mechanism, an adjustment mechanism, a positioning mechanism and a transfer mechanism is designed. The automatic fixed-length perforation of metal pipes is realized through automatic positioning, fixed-length detection and adaptation to devices with different pipe diameters.
The automatic fixed-length perforation of metal tubes is realized, which improves processing accuracy and efficiency, reduces scrap rate and controls production costs.
Smart Images
Figure CN120755378A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of perforation devices, and in particular relates to a fixed-length perforation device for metal pipes. Background Art
[0002] In the traditional metal pipe perforation process, the following technical pain points are common: Manual positioning is inefficient and difficult to guarantee, resulting in large deviations in perforation positions. Existing devices are difficult to adapt to different pipe diameters, and replacing fixtures is time-consuming and affects continuous production; Fixed-length control relies on manual measurement, which is prone to cumulative errors; These problems directly lead to poor processing accuracy, high scrap rate (the finished product rate of some companies has dropped by more than 15%) and increased production costs. There is an urgent need to develop a perforation device with adaptive positioning and automatic fixed-length detection. Summary of the Invention
[0003] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a fixed-length perforation device for metal pipes.
[0004] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows: A fixed-length perforating device for metal pipes, comprising a base, the base being provided with a material receiving mechanism, an adjusting mechanism, a positioning mechanism and a conveying mechanism, and the adjusting mechanism being provided with a perforating mechanism; The material receiving mechanism includes a material receiving frame, the material receiving frame is provided with a first slide, one side of the first slide is connected to a notch, the first slide cooperates with the notch to slide and install a movable support, and the movable support is installed with a V-shaped material receiving frame; The adjustment mechanism includes an adjustment frame, the adjustment frame is provided with a second slide groove, a plurality of movable seats are slidably installed in the second slide groove, the perforation mechanism is installed on the movable seat, the movable seat is provided with a threaded hole and a number of through holes corresponding to the number of other movable seats, the adjustment frame is rotatably installed with a threaded rod, the threaded rod is threadedly connected to the threaded hole, and the power end of the threaded rod is connected to the first motor; The positioning mechanism is used to limit the metal tube on the material supporting mechanism; The transfer mechanism is used to transfer the metal pipe onto the material receiving mechanism.
[0005] It is further defined that the positioning mechanism includes a sliding seat provided at both ends of the first slide groove, and the sliding seat is equipped with a baffle. Such a design, when the length of the metal tube permits, the positioning and fixation of the metal tube can be achieved by clamping the two ends of the metal tube with the baffle.
[0006] It is further defined that one of the sliding seats rotatably connected to the direction away from the transfer mechanism is connected to a screw rod, the screw rod is threadedly connected to the material support frame, and a hand wheel is installed at the end of the screw rod. Such a design can achieve fixed limit of the position of a sliding seat by rotating the screw rod, and use this as the origin to determine the position of subsequent perforations.
[0007] The transmission gear of the present invention is a gear which is connected to the transmission gear of the present invention and is pivotally connected to the transmission gear of the present invention. A connecting shaft is rotatably installed in the rectangular opening, and two ends of the connecting shaft are fixedly connected to the second bevel gear and the third bevel gear, the second bevel gear and the first bevel gear are meshed and matched, the third transmission shaft is fixedly installed with a fourth bevel gear and a seventh pulley, the fourth bevel gear and the third bevel gear are meshed and matched, the fourth transmission shaft is fixedly installed with an eighth pulley and a ninth pulley, the eighth pulley is belt-driven with the seventh pulley, and the ninth pulley is belt-driven connected to the power end of the spiral roller on the other side; A first telescopic cylinder is installed on the top of the U-shaped seat, and a pressure plate is installed on the output end of the first telescopic cylinder. The pressure plate and the V-shaped material receiving frame are both provided with two sets of balls. With this design, the operation of the second motor can be controlled to realize the synchronous and antagonistic rotation of the spiral rollers on both sides. With the help of the pressure given by the first telescopic cylinder on the upper side and the characteristics of the balls, the metal pipe can be driven to move horizontally in the axial direction in a frictional manner, thereby achieving the purpose of fixed-length transportation and then achieving the purpose of fixed-length perforation. It is suitable for use in occasions where the length of the metal pipe is larger than the entire device, and there is no need to limit the axial angle of the perforation position.
[0008] It is further defined that the transfer mechanism includes a second telescopic cylinder installed beside the material support frame, the output end of the second telescopic cylinder is connected to the clamping cylinder, and the output end of the clamping cylinder is installed with a clamping block. With this design, by controlling the operation of the clamping cylinder, the splint can be clamped in the middle, and then controlling the operation of the second telescopic cylinder can achieve the purpose of moving the metal tube horizontally, thereby realizing fixed-length perforation in the horizontal straight direction on the metal tube.
[0009] It is further defined that the movable support is installed with a rectangular plate, and the rectangular plate is installed with a locking screw and a handle. Such a design allows the movable support to be conveniently adjusted and moved by the handle, and the position of the movable support to be fixed by the locking screw.
[0010] It is further defined that the punching mechanism includes an L-shaped support installed on a movable seat, the L-shaped support is installed with a third telescopic cylinder, the output end of the third telescopic cylinder is installed with a moving block, and the moving block is installed with a drilling rig. With this design, by controlling the operation of the third telescopic cylinder, the position movement of the drilling rig can be achieved, thereby achieving the purpose of punching.
[0011] It is further defined that the L-shaped support is installed with a vertical plate, and the moving block is slidably installed on the vertical plate. Such a design ensures the stability of the moving position of the drilling rig and the accuracy of the drilling position.
[0012] It is further defined that the adjustment bracket is provided with scale lines, such a design can detect the accuracy of the position of the movable seat by visual inspection.
[0013] It is further defined that the first motor is connected to a central control system, and the central control system individually controls the number of rotations of each of the first motors. Such a design provides centralized control and is conducive to controlling the operation of each component through a program.
[0014] The beneficial effects of the present invention are as follows: The present invention realizes automated fixed-length perforation and can adapt to the processing of metal pipes of different length specifications and sizes, ensuring efficiency while the automated processing ensures processing accuracy, thereby ensuring the qualified rate and controlling production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings; Figure 1 This is a schematic diagram of the structure of an embodiment of a fixed-length perforation device for metal pipes according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an embodiment of a fixed-length perforation device for metal pipes according to the present invention. Figure 2 ; Figure 3 This is a schematic structural diagram of an adjustment mechanism of an embodiment of a fixed-length perforating device for a metal pipe according to the present invention; Figure 4 A cross-sectional view and a partially enlarged structural diagram of an embodiment of a fixed-length perforating device for a metal pipe according to the present invention; Figure 5 This is a schematic cross-sectional view of a movable support according to an embodiment of a fixed-length perforating device for a metal pipe according to the present invention; Figure 6 This is a schematic cross-sectional view of a U-shaped seat of an embodiment of a fixed-length perforating device for a metal pipe according to the present invention; The main component symbols are described as follows: Base 1; material receiving mechanism 2; adjustment mechanism 3; positioning mechanism 4; transfer mechanism 5; punching mechanism 6; Material support frame 21; first slide groove 22; notch 23; movable support 24; V-shaped material support frame 25; rectangular plate 26; locking screw 27; handle 28; Adjusting frame 31; second slide groove 32; movable seat 33; threaded hole 34; through hole 35; threaded rod 36; first motor 37; scale line 38; Sliding seat 41; baffle 42; screw rod 43; hand wheel 44; Support plate 51; U-shaped seat 52; circular opening 53; rectangular opening 54; roller groove 55; spiral roller 56; first pulley 57; first transmission shaft 58; second transmission shaft 59; third transmission shaft 510; fourth transmission shaft 511; second pulley 512; third pulley 513; fourth pulley 514; fifth pulley 515; first bevel gear 516; second motor 517; sixth pulley 518; connecting shaft 519; second bevel gear 520; third bevel gear 521; fourth bevel gear 522; seventh pulley 523; eighth pulley 524; ninth pulley 525; first telescopic cylinder 526; pressure plate 527; rolling ball 528; second telescopic cylinder 529; clamping cylinder 530; clamping block 531; L-shaped support 61; third telescopic cylinder 62; moving block 63; drilling machine 64; vertical plate 65. DETAILED DESCRIPTION
[0016] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.
[0017] like Figures 1-6 As shown, a fixed-length perforating device for metal pipes of the present invention comprises a base 1, the base 1 is provided with a material receiving mechanism 2, an adjusting mechanism 3, a positioning mechanism 4 and a conveying mechanism 5, and a perforating mechanism 6 is mounted on the adjusting mechanism 3; The material receiving mechanism 2 includes a material receiving frame 21, the material receiving frame 21 is provided with a first chute 22, one side of the first chute 22 is connected to a notch 23, the first chute 22 cooperates with the notch 23 to slide and install a movable support 24, and the movable support 24 is installed with a V-shaped material receiving frame 25; The adjustment mechanism 3 includes an adjustment frame 31, which is provided with a second slide 32, and a plurality of movable seats 33 are slidably mounted on the second slide 32. The perforation mechanism 6 is mounted on the movable seat 33, and the movable seat 33 is provided with a threaded hole 34 and a number of through holes 35 corresponding to the number of other movable seats 33. The adjustment frame 31 is rotatably mounted with a threaded rod 36, which is threadedly connected to the threaded hole 34. The power end of the threaded rod 36 is connected to a first motor 37. The positioning mechanism 4 is used to limit the metal tube on the material receiving mechanism 2; The transfer mechanism 5 is used to transfer the metal pipe on the material receiving mechanism 2 .
[0018] The preferred positioning mechanism 4 includes a sliding seat 41 provided at both ends of the first slide groove 22, and the sliding seat 41 is equipped with a baffle 42. With such a design, when the length of the metal tube allows, the metal tube can be positioned and fixed by clamping the two ends of the metal tube with the baffle 42. When the specifications and dimensions of the metal tube allow the overall perforation requirements to be achieved without moving the position, the metal tube is directly placed on the V-shaped material support 25, and then the sliding seats 41 at both ends are moved so that the baffle 42 contacts the two ends of the metal tube, and the metal tube is fixed in position in a tight and fixed manner. After the position of the perforation mechanism 6 is determined, it can be directly processed. When the number of perforation mechanisms 6 does not support the entire processing requirement to be completed by one processing, there is no need to move the metal tube, and the position of the perforation mechanism 6 can be adjusted by the adjustment mechanism 3.
[0019] Preferably, a sliding seat 41 is rotatably connected to a screw rod 43 away from the transfer mechanism 5, and the screw rod 43 is threadedly connected to the material support frame 21. A hand wheel 44 is installed at the end of the screw rod 43. With this design, the position of a sliding seat 41 can be fixed and limited by rotating the screw rod 43, and this is used as the origin to determine the position of subsequent perforations. When there are requirements for the perforation position on the metal pipe, the position of the sliding seat 41 can be fine-tuned by rotating the screw rod 43. In fact, how to determine the origin position can also be considered according to specific circumstances.
[0020] Preferably, the moving mechanism 5 comprises a support plate 51 installed beside the V-shaped material supporting frame 25, the support plate 51 is installed with a U-shaped seat 52, the U-shaped seat 52 is provided with a circular opening 53 and a rectangular opening 54, the circular opening 53 is communicated with the rectangular opening 54, the corner position where the circular opening 53 is communicated with the rectangular opening 54 is provided with a roller groove 55, a spiral roller 56 is rotatably installed in the roller groove 55, the shaft end of the spiral roller 56 is connected with a first pulley 57, the U-shaped seat 52 is symmetrically installed with a first transmission shaft 58, a second transmission shaft 59, a third transmission shaft 510 and a fourth transmission shaft 511, the first transmission shaft 58 is installed with a second pulley 512 which is belt driven with the first pulley 57, the first transmission shaft 58 is fixedly installed with a third pulley 513, the second transmission shaft 59 is fixedly installed with a fourth pulley 514 which is belt driven with the third pulley 513, the second transmission shaft 59 is fixedly installed with a fifth pulley 515 and a first bevel gear 516, the U-shaped seat 52 is installed with a second motor 517, the output end of the second motor 517 is connected with a sixth pulley 518 which is belt driven with the fifth pulley 515; A connecting shaft 519 is rotatably installed in the rectangular opening 54, the two ends of the connecting shaft 519 are fixedly connected with a second bevel gear 520 and a third bevel gear 521, the second bevel gear 520 and the first bevel gear 516 are meshed and matched, the third transmission shaft 510 is fixedly installed with a fourth bevel gear 522 and a seventh pulley 523, the fourth bevel gear 522 is meshed and matched with the third bevel gear 521, the fourth transmission shaft 511 is fixedly installed with an eighth pulley 524 and a ninth pulley 525, the eighth pulley 524 is belt driven with the seventh pulley 523, the ninth pulley 525 is belt driven and connected with the power end of the spiral roller 56 on the other side; The top of the U-shaped seat 52 is installed with a first telescopic cylinder 526, the output end of the first telescopic cylinder 526 is installed with a pressing plate 527, the pressing plate 527 and the V-shaped material supporting frame 25 are both provided with two groups of rolling balls 528, with such design, by controlling the operation of the second motor 517, the synchronous and opposite direction rotation of the spiral rollers 56 on both sides can be realized, and by the pressure given by the first telescopic cylinder 526 on the top and the characteristics of the rolling balls 528, the metal pipe can be driven to move horizontally in the axial direction in a frictional manner, so as to realize the purpose of fixed-length conveying, and then realize the purpose of fixed-length perforating, which is suitable for the occasions where the length of the metal pipe is larger than the whole device, and the axial angle of the perforating position does not need to be limited, in fact, the structure of the moving mechanism 5 can also be considered according to the specific situation.
[0021] Preferably, the transfer mechanism 5 includes a second telescopic cylinder 529 installed next to the material support frame 21, and the output end of the second telescopic cylinder 529 is connected to the clamping cylinder 530, and the output end of the clamping cylinder 530 is installed with a clamping block 531. With this design, by controlling the operation of the clamping cylinder 530, the clamping plate 531 can be clamped in the middle, and then the operation of the second telescopic cylinder 529 can be controlled to achieve the purpose of moving the metal tube horizontally, thereby achieving fixed-length perforation in the horizontal straight direction on the metal tube. In fact, the choice of the transfer mechanism 5 can also be considered according to specific circumstances.
[0022] Preferably, the movable support 24 is installed with a rectangular plate 26, and the rectangular plate 26 is installed with a locking screw 27 and a handle 28. Such a design allows the movable support 24 to be conveniently adjusted and moved by the handle 28, and the position of the movable support 24 to be fixed by the locking screw 27. In fact, measures for moving and fixing the position of the movable support 24 can also be considered according to specific circumstances.
[0023] Preferably, the punching mechanism 6 includes an L-shaped support 61 installed on the movable base 33, the L-shaped support 61 is installed with a third telescopic cylinder 62, the output end of the third telescopic cylinder 62 is installed with a moving block 63, and the moving block 63 is installed with a drill rig 64. With this design, the position movement of the drill rig 64 can be achieved by controlling the operation of the third telescopic cylinder 62, thereby achieving the purpose of punching. In fact, the selection of the punching mechanism 6 can also be considered according to specific circumstances.
[0024] Preferably, the L-shaped support 61 is installed with a vertical plate 65, and the moving block 63 is slidably installed on the vertical plate 65. This design ensures the stability of the moving position of the drilling rig 64 and the accuracy of the drilling position. In fact, measures to ensure the position movement effect can also be considered according to specific circumstances.
[0025] Preferably, the adjustment frame 31 is provided with scale lines 38. Such a design can detect the accurate position of the movable seat 33 by visual inspection. In fact, the position and manner of marking the scale lines 38 can also be considered according to specific circumstances.
[0026] Preferably, the first motor 37 is connected to a central control system, which individually controls the number of rotations of each first motor 37. Such a design, with centralized control, is conducive to controlling the operation of each component through a program. In fact, control measures can also be considered according to specific circumstances.
[0027] In this embodiment, when using a fixed-length perforation device for metal pipes, there are different usage methods according to the length, specifications and perforation requirements of the metal pipes: When the size of the metal tube allows the entire punching operation to be completed without position movement, there is no need to use the transfer mechanism 5, and only the positioning mechanism 4 can be used, that is, baffles 42 are installed on the sliding seats 41 at both ends, and the metal tube is placed on the V-shaped material support 25, and then the two ends of the metal tube are clamped in a manner of resisting the top clamp, thereby achieving the position fixation of the metal tube. Further, by rotating the screw rod 43 to fine-tune the position of the sliding seat 41, the origin can be determined, which is beneficial to the fixed-length drilling of the subsequent punching mechanism 6. It should be noted that it is not difficult for technicians in the relevant field to understand that when the punching mechanism 6 is running, the position of the sliding seat 41 has been fixed, thereby preventing the metal tube from changing its position when it is subjected to force. This method can only achieve horizontal straight-line punching on the metal tube. Further, when it is necessary to punch the metal tube, the position of the movable support 24 is no longer at the punching position to prevent interference. If multiple positions are to be punched axially, the sliding seat 41 needs to be loosened and the metal tube needs to be manually rotated. When the size of the metal tube does not allow the entire punching operation to be completed without position movement, and there is no position requirement in the axial direction, the spiral roller 56 is used to drive the movement to remove the baffle 42 on the sliding seat 41 to prevent interference with the axial horizontal movement of the metal tube, and one end of the metal tube is inserted into the circular opening 53 on the U-shaped seat 52 so that the lower two sides of the metal tube contact the spiral roller 56, and then pull the part of the metal tube into the processing range of the punching mechanism 6, and determine the position of the punching mechanism 6, and then control the first telescopic cylinder 526 to operate, drive the pressure plate 527 to move toward the metal tube until the ball 528 contacts the metal tube, so that the metal tube is positioned between the spiral roller 56 and the ball 528, and then, with the auxiliary support of the material receiving mechanism 2, after the punching mechanism 6 processes a hole and returns to a safe position, the second motor 517 The sixth pulley 518 is driven to rotate. Under the transmission and driving effect of the first pulley 57, the second pulley 512, the third pulley 513, the fourth pulley 514, the fifth pulley 515, the first bevel gear 516, the sixth pulley 518, the connecting shaft 519, the second bevel gear 520, the third bevel gear 521, the fourth bevel gear 522, the seventh pulley 523, the eighth pulley 524 and the ninth pulley 525, the two spiral rollers 56 located at the bottom of the metal tube rotate synchronously in opposite directions. Under the effect of friction, the metal tube begins to move in a horizontal straight line. Because the number of rotations of the second motor 517 can be controlled synchronously, the number of rotations of the spiral roller 56 can be controlled synchronously, so the linear movement distance of the metal tube can be controlled. Then, it stops, and the next section of the metal tube can be perforated. The control of the movement distance achieves the purpose of fixed length. When the specifications and dimensions of the metal tube do not allow the entire punching operation to be completed without position movement, and there is a requirement for a horizontal straight line in the axial direction, the driving movement method of the spiral roller 56 cannot be used, and the second telescopic cylinder 529 is used to drive the clamping cylinder 530. That is, after the metal tube completes a positioning and punching process, the second telescopic cylinder 529 is controlled to operate to drive the clamping cylinder 530 to move. After moving into position, the clamping cylinder 530 is operated to control the clamping block 531 to clamp the metal tube. Then the second telescopic cylinder 529 retracts, which drives the metal tube to move in a horizontal straight line, and then the next punching process can be carried out. The moving distance of the second telescopic cylinder 529 is a fixed length. Furthermore, during the punching process, the first telescopic cylinder 526 operates to drive the pressure plate 527 to move downward, which can achieve auxiliary positioning and clamping of the metal tube. On the basis of the above, the position of the punching mechanism 6 can also be adjusted, and the position adjustment of each punching mechanism 6 is individual, because each threaded rod 36 can only control the movement of one movable seat 33 when the through hole 35 gives way, so by controlling the selected number of turns of the first motor 37 at the corresponding position, the position movement of the corresponding movable seat 33 can be controlled, thereby realizing the change of the distance size between two adjacent punching mechanisms 6 and achieving the punching target required by technology.
[0028] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.
Claims
1. A fixed-length perforation device for a metal tube, comprising a base (1), characterized in that: The base (1) is provided with a material receiving mechanism (2), an adjusting mechanism (3), a positioning mechanism (4) and a transfer mechanism (5), and a perforating mechanism (6) is installed on the adjusting mechanism (3); The material receiving mechanism (2) includes a material receiving frame (21), the material receiving frame (21) is provided with a first chute (22), one side of the first chute (22) is connected to a notch (23), the first chute (22) is slidably mounted with a movable support (24) in cooperation with the notch (23), and the movable support (24) is mounted with a V-shaped material receiving frame (25); The adjusting mechanism (3) includes an adjusting frame (31), the adjusting frame (31) is provided with a second slide groove (32), the second slide groove (32) is slidably mounted with a plurality of movable seats (33), the perforating mechanism (6) is mounted on the movable seat (33), the movable seat (33) is provided with a threaded hole (34) and a number of through holes (35) corresponding to the number of other movable seats (33), the adjusting frame (31) is rotatably mounted with a threaded rod (36), the threaded rod (36) is threadedly connected to the threaded hole (34), and the power end of the threaded rod (36) is connected to a first motor (37); The positioning mechanism (4) is used to position the metal tube on the material receiving mechanism (2); The transfer mechanism (5) is used to transfer the metal pipe on the material receiving mechanism (2).
2. A fixed-length perforation device for metal pipes according to claim 1, characterized in that: The positioning mechanism (4) comprises a sliding seat (41) provided at both ends of the first sliding groove (22), and a baffle (42) is installed on the sliding seat (41).
3. A fixed-length perforation device for metal pipes according to claim 2, characterized in that: One of the sliding seats (41) in a direction away from the transfer mechanism (5) is rotatably connected to a screw rod (43), the screw rod (43) is threadedly connected to the material support frame (21), and a hand wheel (44) is installed at the end of the screw rod (43).
4. The fixed-length perforation device for metal pipes according to claim 1, characterized in that: The transfer mechanism (5) includes a support plate (51) installed on the side of the material support frame (21), the support plate (51) is installed with a U-shaped seat (52), the U-shaped seat (52) is provided with a circular opening (53) and a rectangular opening (54), the circular opening (53) is connected to the rectangular opening (54), and a roller groove (55) is provided at the corner position where the circular opening (53) is connected to the rectangular opening (54), a spiral roller (56) is rotatably installed in the roller groove (55), the shaft end of the spiral roller (56) is connected to a first pulley (57), and the U-shaped seat (52) is symmetrically installed with a first transmission shaft (58), a second transmission shaft (59), and a third transmission shaft (55). A shaft (510) and a fourth transmission shaft (511), the first transmission shaft (58) is installed with a second pulley (512) driven by the first pulley (57), the first transmission shaft (58) is fixedly installed with a third pulley (513), the second transmission shaft (59) is fixedly installed with a fourth pulley (514) driven by the third pulley (513), the second transmission shaft (59) is fixedly installed with a fifth pulley (515) and a first bevel gear (516), the U-shaped seat (52) is installed with a second motor (517), and the output end of the second motor (517) is connected to a sixth pulley (518) driven by the fifth pulley (515); A connecting shaft (519) is rotatably mounted in the rectangular opening (54), and a second bevel gear (520) and a third bevel gear (521) are fixedly connected at both ends of the connecting shaft (519), and the second bevel gear (520) and the first bevel gear (516) are meshed and matched. A fourth bevel gear (522) and a seventh pulley (523) are fixedly mounted on the third transmission shaft (510), and the fourth bevel gear (522) and the third bevel gear (521) are meshed and matched. An eighth pulley (524) and a ninth pulley (525) are fixedly mounted on the fourth transmission shaft (511), and the eighth pulley (524) and the seventh pulley (523) are driven by a belt, and the ninth pulley (525) is connected to the power end of the spiral roller (56) on the other side by a belt drive. A first telescopic cylinder (526) is installed on the top of the U-shaped seat (52), a pressing plate (527) is installed on the output end of the first telescopic cylinder (526), and the pressing plate (527) and the V-shaped material support frame (25) are both provided with two sets of rolling balls (528).
5. The fixed-length perforation device for metal pipes according to claim 1, characterized in that: The transfer mechanism (5) comprises a second telescopic cylinder (529) installed beside the material support frame (21), the output end of the second telescopic cylinder (529) is connected to a clamping cylinder (530), and the output end of the clamping cylinder (530) is installed with a clamping block (531).
6. The fixed-length perforation device for metal pipes according to claim 1, characterized in that: The movable support (24) is mounted with a rectangular plate (26), and the rectangular plate (26) is mounted with a locking screw (27) and a handle (28).
7. The fixed-length perforation device for metal pipes according to claim 1, characterized in that: The perforating mechanism (6) comprises an L-shaped support (61) mounted on a movable seat (33), the L-shaped support (61) being mounted with a third telescopic cylinder (62), the output end of the third telescopic cylinder (62) being mounted with a movable block (63), and the movable block (63) being mounted with a drilling rig (64).
8. The fixed-length perforation device for metal pipes according to claim 7, characterized in that: The L-shaped support (61) is mounted with a vertical plate (65), and the moving block (63) is slidably mounted on the vertical plate (65).
9. The fixed-length perforation device for metal pipes according to claim 1, characterized in that: The adjustment frame (31) is provided with scale lines (38).
10. The fixed-length perforation device for metal pipes according to claim 1, characterized in that: The first motor (37) is connected to a central control system, and the central control system individually controls the number of rotations of each first motor (37).