High-precision positioning flexible metal pipe punching machine

Abstract

The invention discloses a high-precision positioning flexible metal pipe punching machine. The straightening device is used for straightening the metal pipe; the feeding device is used for obtaining the metal pipe in the straightening device and transferring the metal pipe into the positioning device; the positioning device comprises a base and a laser positioning assembly, a containing groove is formed in the base, a punching groove corresponding to the cutter is formed in the containing groove, and the laser positioning assembly emits at least two lasers and is used for positioning different positions of the cutting portion of the metal pipe in multiple directions at the same time. A cutter is arranged on the cutting device and penetrates into a cutting part to cut off the metal pipe, and the cutting part of the flexible metal pipe is inclined, so that the cutting part is detected simultaneously from multiple directions through multiple positioning lasers, it is ensured that the cutting part is accurately aligned with a punching groove, punching can be conducted every time very accurately, and the cutting efficiency is improved. And the conditions of dislocation and confusion are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of cutting devices for products, and specifically relates to a high-precision positioning flexible metal tube punching machine. Background Art

[0002] Flexible metal tubes have advantages such as adjustable direction and shape setting, and are widely used. They are specifically made of spiral metal wires, as shown in Figure 1 Of course, there are different structures according to different requirements, but basically they cannot do without the spiral form;

[0003] Flexible metal tubes are usually made very long and then cut into different lengths at equal intervals. In the prior art, there are no requirements for the cut, so usually, the metal tube is held manually, a certain length is selected, and then cut by a punching machine; however, now there are requirements for the cut, and according to the requirements, the cutting position should be at the spiral groove. However, the position of the spiral groove is extremely small. Currently, the relatively common method is the equal-distance feeding method. The equal-distance feeding method is to set the system to convey the same length of material each time. Although this method is simple, the error is relatively large. It can be aligned at the beginning, but due to the cutting error, the subsequent pushing gap will become larger and larger, and it is impossible to accurately align the cutting position. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-precision positioning flexible metal tube punching machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A high-precision positioning flexible metal tube punching machine, comprising:

[0007] A straightening device for straightening the metal tube;

[0008] A feeding device for obtaining the metal tube in the straightening device and transferring the metal tube to the positioning device;

[0009] The positioning device includes a base and a laser positioning component. A placement groove is provided on the base, and a punching groove corresponding to the cutting knife is provided at the placement groove. The laser positioning component emits at least two lasers for multi-directionally and simultaneously positioning different positions of the cutting part of the metal tube;

[0010] A cutting knife is provided on the cutting device, which penetrates into the cutting part to cut the metal tube.

[0011] In a further technical solution, the cutting part of the metal tube is inclined, and the laser positioning component emits two lasers relatively, respectively corresponding to two sides of the cutting part of the metal tube, and the two lasers respectively correspond to the punching grooves.

[0012] According to a further technical solution, the feeding device comprises a fixed seat, on which a clamping assembly 1 and a clamping assembly 2 are slidably connected, and the clamping assembly 1 and the clamping assembly 2 can extend to both sides of the base respectively;

[0013] A first driving assembly is installed on the fixing seat, and the first driving assembly can independently drive the clamping assembly 1 and the clamping assembly 2.

[0014] According to a further technical solution, the first driving assembly includes a mounting frame, on which two driving motors are relatively mounted, and the two driving motors are respectively connected to two synchronous wheel sets relatively mounted on a fixed seat, and the two synchronous wheel sets are respectively connected to clamping assembly one and clamping assembly two.

[0015] According to a further technical solution, the clamping assembly 1 and the clamping assembly 2 are respectively formed with a clamping position 1 and a clamping position 2, the clamping position 1 and the clamping position 2 are adapted to the shape of the metal tube, and the clamping position 1, the clamping position 2 and the placement position are coaxially arranged.

[0016] According to a further technical solution, the clamping assembly 1 and the clamping assembly 2 have the same structure and include a first slide seat, a bracket is installed on the first slide seat, the bracket is slidably connected to the first slide seat, and the bracket is connected to the output end of the second cylinder, and a first clamping component is installed on the bracket.

[0017] A further technical solution is that the first clamping component includes a first cylinder and a fixed cover, the fixed cover is rotatably connected to two clamping arms, a spring is provided between the two clamping arms, and a top contact block is provided at the output end of the first cylinder and extends into the fixed cover, the top contact block contacts the two clamping arms and pushes the two clamping arms to rotate.

[0018] A further technical solution is that the bracket includes a second slide and a third slide, the second slide is slidably connected to the first slide, and a third cylinder is installed on the second slide, the third slide is slidably connected to the second slide, and the sliding direction of the third slide is the same as the extension direction of the metal tube, the output end of the third cylinder is connected to the third slide, and the third cylinder is released as a buffer during cutting.

[0019] According to a further technical solution, the straightening device comprises a supporting plate and a rotating frame;

[0020] The support plate is used to place the metal pipe, and an alignment component is installed on one side of the support plate;

[0021] The rotating frame is connected to the second driving assembly, and a clamping assembly three and a clamping assembly four are installed on the rotating frame.

[0022] Further technical solution: The clamping assembly four includes a fourth cylinder. A connecting plate is installed at the output end of the fourth cylinder. A pushing component and a fourth sliding seat are installed on the connecting plate. The pushing component is connected to the fourth sliding seat. A second clamping component is installed on the fourth sliding seat.

[0023] Further technical solution: A wire hooking component is provided on one side of the second clamping component close to the supporting part.

[0024] Advantages of the present invention:

[0025] Since the cutting part of the flexible metal tube is inclined, the present invention uses multiple positioning lasers to detect the cutting part simultaneously from multiple directions to ensure that the cutting part is accurately aligned with the punching groove, so that each punching can be very precise and there will be no misalignment or confusion.

[0026] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Description of the drawings

[0027] Figure 1 : Structure diagram of the metal tube of the present invention.

[0028] Figure 2 : Overall structure diagram of the present invention.

[0029] Figure 3 : Structure diagram of the feeding device and positioning device of the present invention.

[0030] Figure 4 : Structure diagram of the positioning device of the present invention.

[0031] Figure 5 : Structure diagram of the base of the present invention.

[0032] Figure 6 : Schematic diagram of the positioning laser and the base of the present invention.

[0033] Figure 7 : Overall structure diagram of the clamping assembly one of the present invention.

[0034] Figure 8 : Partial structure diagram of the clamping assembly of the present invention.

[0035] Figure 9 : Structure diagram of the straightening device of the present invention.

[0036] Figure 10 : Structure diagram of the clamping assembly four of the present invention.

[0037] Figure 11 : Side view of the straightening device of the present invention.

[0038] Reference numerals: 1 - positioning device, 1 - base, 12 - placement groove, 13 - punching groove, 14 - laser positioning assembly, 2 - straightening device, 21 - supporting plate, 22 - rotating frame, 23 - alignment assembly, 24 - second driving assembly, 25 - clamping assembly III, 26 - clamping assembly IV, 261 - fourth cylinder, 262 - connecting plate, 263 - pushing member, 264 - fourth sliding seat, 265 - second clamping member, 267 - wire drawing member, 3 - cutting device, 31 - cutting knife, 41 - metal tube, 42 - cutting part, 5 - feeding device, 51 - fixed seat, 52 - clamping assembly I, 521 - first sliding seat, 522 - bracket, 5221 - second sliding seat, 5222 - third sliding seat, 5223 - third cylinder, 523 - first cylinder, 524 - fixed cover, 525 - clamping arm, 526 - spring, 527 - abutting block, 53 - clamping assembly II, 541 - mounting frame, 542 - driving motor, 543 - synchronous pulley set, 55 - second cylinder, 56 - fixing plate, 571 - clamping position I, 572 - clamping position II. Detailed implementation manner

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0040] Please refer to Figures 1-11 ;

[0041] The present invention adopts a brand - new cutting and positioning method, which can align the cutting position before each punching, achieving highly accurate cutting of the metal tube 41. The flexible metal tube 41 in the present invention is specifically made by winding two spiral metal wires with different diameters around each other. As Figure 1 shown, the cutting position is located at the gap between the outer spiral metal wires. The cutting knife 31 penetrates into the gap to cut off the lower spiral connection part. Therefore, only the position of the outer spiral metal wire needs to be positioned, but the cutting position is very small; of course, there should be other identical or similar flexible metal wires, and the positioning method of this device is also applicable; specifically including a straightening device 2, a feeding device 5, a positioning device 1, and a cutting device 3; it should be noted that the metal tube 41 first goes through the production process to form a relatively long section and then falls into the straightening device 2.

[0042] During the production process, the metal tube 41 will have some bends, which will affect the subsequent positioning and cutting operations. Therefore, after the metal tube 41 falls into the straightening device 2, the straightening device 2 will first straighten the metal tube 41 to meet the requirements of subsequent operations. Then, the feeding device 5 will obtain the metal tube 41 in the straightening device 2 and transfer the metal tube 41 to the positioning device 1. In this embodiment, the positioning device 1 includes a base 11 and a laser positioning component 14. Preferably, the laser positioning component 142 is a plurality of laser displacement sensors. A placement groove 12 is provided on the base 11, and a punching groove 13 corresponding to the cutting knife 31 is provided at the placement groove 12.

[0043] The feeding device 5 pushes the metal tube 41 into the placement groove 12. The side wall of the placement groove 12 is provided with an inclined surface to limit the metal tube 41 to prevent it from shifting left and right. Then, the laser positioning component 14 emits at least two lasers to position the cutting part 42 of the metal tube 41. It should be noted that Figure 1 As shown, since the metal tube 41 is composed of spiral metal wires, the formed cutting part 42 is obliquely arranged, and the punching grooves 13 are also arranged in a staggered manner. The multiple lasers are emitted in different directions and irradiated onto the metal tube 41. It is necessary to ensure that all the multiple lasers irradiate the cutting part 42 at the same time to be considered a successful positioning. If only some lasers irradiate the cutting part 42 and the other laser irradiates the metal wire, the data fed back by the two will be different, that is, the heights detected by the lasers are different, indicating that the cutting part 42 is not successfully positioned. At this time, the feeding device 5 needs to fine-tune the metal tube 41 until all the lasers hit the cutting part 42 and the fed-back data is completely consistent, which means the positioning is successful. Finally, the cutting device 3 extends the cutting knife 31. The cutting knife 31 first enters the cutting part 42 (gap), and then cuts off the metal tube 41.

[0044] After completing one punching and cutting, the feeding device 5 pushes the metal tube 41 forward again, and then uses the above-mentioned implementation method to position the cutting part 42 again, so as to ensure that the cutting part 42 can be positioned before each punching and cutting, making the cutting more accurate.

[0045] Further explanation of the emitted lasers is as follows. Refer to Figure 4 and Figure 6 , the cutting part 42 of the metal tube 41 is obliquely arranged. The laser positioning component 14 emits two lasers relatively. The two lasers are emitted obliquely downward from both sides towards the cutting part 42, corresponding to the two sides of the cutting part 42 of the metal tube 41 respectively, and the two lasers respectively correspond to the punching grooves 13. From the top view, the irradiation surfaces of the two lasers are both in the punching grooves 13, so that the cutting part 42 can be aligned with the punching grooves 13 to ensure accurate cutting.

[0046] Preferably, the cutter 31 in the cutting assembly is adapted to the cutting portion 42 of the metal tube 41 , for example, in an “S” shape or a “Z” shape, etc.

[0047] One embodiment of the feeding device 5 of the present invention is shown in FIG. Figure 3 and Figure 7 , specifically comprising a fixed seat 51, a clamping assembly 1 52 and a clamping assembly 2 53 are slidably connected to the fixed seat 51, the clamping assembly 1 52 and the clamping assembly 2 53 can extend to both sides of the base 11 respectively, and a first driving assembly is installed on the fixed seat 51. In this embodiment, the clamping assembly 1 52 and the clamping assembly 2 53 are operated by the first driving assembly alone;

[0048] In this embodiment, the clamping assembly 1 52 and the clamping assembly 2 53 have a telescopic function. In the initial state, the clamping assembly 1 52 and the clamping assembly 2 53 are both located on the side close to the straightening device 2. The first driving assembly is used to separate the clamping assembly 1 52 and the clamping assembly 2 53 by a distance, so that the two can clamp and fix the two ends of the metal tube 41, and at the same time, they are extended to obtain the metal tube 41 to be cut, and are pushed into and passed through the placement position under the drive of the first driving assembly; then, the first driving assembly is used to push the two clamping assemblies forward synchronously, so that the metal tube 41 enters the placement position, and finally, the clamping assembly 2 53 bypasses the base 11 again through the telescopic action to reach the other end and clamp the metal tube 41.

[0049] Preferably, the clamping component 1 52 and the clamping component 2 53 are respectively formed with a clamping position 1 571 and a clamping position 2 572, and the clamping position 1 571 and the clamping position 2 572 are adapted to the shape of the metal tube 41. When the clamping component 1 52 and the clamping component 2 53 are respectively located on both sides of the base 11, the clamping position 1 571, the clamping position 2 572 and the placement position are coaxially arranged, so that the metal tube 41 always maintains a straight state, which can play a positioning role.

[0050] One of the embodiments of the first driving component of the present invention specifically includes a mounting frame 541, on which two driving motors 542 are relatively mounted, and the two driving motors 542 are respectively connected to two synchronous wheel sets 543 relatively mounted on a fixed base 51 for transmission, and the two synchronous wheel sets 543 are respectively connected to a clamping component 1 52 and a clamping component 2 53. The driving motors 542 are relatively arranged so that they can be installed using a mounting frame 541, saving installation components.

[0051] In the present invention, the clamping assembly one 52 and the clamping assembly two 53 have the same structure. Taking the clamping assembly one 52 as an example for illustration, it specifically includes a first sliding seat 521. A bracket 522 is installed on the first sliding seat 521. The bracket 522 is slidably connected to the first sliding seat 521, and the bracket 522 is connected to the output end of the second cylinder 55. Among them, the second cylinder 55 is connected to the first sliding seat 521 through a fixing plate 56. When the second cylinder 55 extends or contracts, it can push the bracket 522 to slide relative to the first sliding seat 521, thereby realizing the extension or retraction action of the clamping assembly. In addition, a first clamping member is installed on the bracket 522, and the first clamping member can be a combination of a pneumatic claw and a clamping arm.

[0052] Preferably, referring to Figure 7 , the first clamping member includes a first cylinder 523 and a fixing cover 524. Two clamping arms 525 are rotatably connected to the fixing cover 524. In this embodiment, the two clamping arms 525 can be respectively rotatably connected to the fixing cover 524, or after they are rotatably connected to each other, their central axis is connected to the fixing cover 524, both of which can achieve the same function. A spring 526 is provided between the two clamping arms 525. The output end of the first cylinder 523 is provided with a top contact block 527, and the top contact block 527 extends into the fixing cover 524. The top contact block 527 abuts against the two clamping arms 525 and pushes the two clamping arms 525 to rotate. In this embodiment, the inner sides of one ends of the two clamping arms 525 are provided with inclined surfaces, and the corresponding top contact block 527 is also provided with an inclined surface. When the first cylinder 523 pushes the ejector block forward, the top contact block 527 is squeezed between the two clamping arms 525, causing the two clamping arms 525 to rotate, so that the clamping ends of the two clamping arms 525 approach each other to form a clamping state. When the first cylinder 523 drives the top contact block 527 to retract, under the action of the spring 526, the clamping ends of the two clamping arms 525 are separated from each other, and then the clamping state is changed to a released state.

[0053] Further, referring to Figure 8 , the bracket 522 includes a second sliding seat 5221 and a third sliding seat 5222. The second sliding seat 5221 is slidably connected to the first sliding seat 521, and a third cylinder 5223 is installed on the second sliding seat 5221. The third sliding seat 5222 is slidably connected to the second sliding seat, and the sliding direction of the third sliding seat 5222 is the same as the extending direction of the metal tube 41. The output end of the third cylinder 5223 is connected to the third sliding seat 5222. Taking the clamping assembly one 52 as an example, in the initial state, the third cylinder 5223 is in the extended state, so that the third sliding seat 5222 moves to the rightmost side of the second sliding seat 5221. When the cutting tool 31 cuts the metal tube 41, the two sections of the metal tube 41 with the cutting tool 31 as the boundary tend to move towards both ends. If the clamping assembly one 52 is fixed at this time, this section of the metal tube 41 will be bent, which will affect the next feeding and the re-grasping of the clamping assembly two 53, and the end clamped by the clamping assembly two 53 will also be bent, affecting the appearance.

[0054] Therefore, before preparing for cutting, release the air pressure of the third cylinder 5223 to make it lose power. At this time, it will retract as long as it is stressed; that is, a section of the metal tube 41 fixed by the first clamping assembly 52 moves backward under force during cutting. At this time, since the third cylinder 5223 has no air pressure and will not generate resistance to the first clamping assembly 52, the entire third sliding seat 5222 moves to the left as a whole to form a buffer after being stressed, preventing the metal tube 41 from bending during cutting.

[0055] It should be noted that according to the above embodiment, the third cylinder 5223 in the second clamping assembly 53 is initially in a retracted state. During cutting, the air pressure is released so that it can move to the right unobstructed, in the opposite direction to the movement direction of the first clamping assembly 52. After completion, the third cylinder 5223 resumes air pressure to extend or retract again, pushing the third sliding seat 5222 to move back to its original position.

[0056] Furthermore, before cutting, the relative positions of the first clamping assembly 52 and the second clamping assembly 53 are fixed. After cutting is completed, the first clamping assembly 52 sends the metal tube 41 towards the base 11 and fixes it by the second clamping assembly 53; then the first clamping assembly 52 retreats a certain distance to keep the relative positions of the first clamping assembly 52 and the second clamping assembly 53 fixed, which can prevent the distance between the two fixing points of the metal tube 41 from being excessive, resulting in complete deformation of the metal tube 41 under the action of gravity.

[0057] One embodiment of the present invention regarding the straightening device 2 is referred to Figures 9-11 , including a supporting plate 21 and a rotating frame 22. It should be noted that the rotating frame 22 should be installed on the machine frame and is rotatably connected to the machine frame. Similarly, the supporting plate 21 is also installed on the machine frame and the supporting plate 21 is inclined; after the metal tube 41 enters the supporting plate 21, it does not meet the shaping distance. Therefore, first, the alignment component 23 pushes the metal tube 41 forward, and then the second driving component 24 drives the rotating frame 22 to rotate, so that the third clamping assembly 25 and the fourth clamping assembly 26 rotate, thereby obtaining the metal tube 41, and then the third clamping assembly 25 and the fourth clamping assembly 26 move relative to each other to straighten the metal tube 41 to achieve shaping.

[0058] Further, the position of the third clamping assembly 25 can be movable or immovable, and the implementation manner of the fourth clamping assembly 26 can be referred to; taking the fourth clamping assembly 26 as an example for illustration, it specifically includes a fourth cylinder 261. The fourth cylinder 261 is connected to the rotating frame 22 through a fixed plate. A connecting plate 262 is installed at the output of the fourth cylinder 261. A pushing member 263 and a fourth sliding seat 264 are installed on the connecting plate 262. The fourth sliding seat 264 is slidably connected to the connecting plate 262. The pushing member 263 is connected to the fourth sliding seat 264. A second clamping member 265 is installed on the fourth sliding seat 264. The pushing member 263 and the fourth sliding seat 264 mainly provide a telescopic action for the second clamping member 265. After the third clamping assembly 25 and the fourth clamping assembly 26 clamp and fix two sections of the metal pipe 41, the fourth cylinder 261 is used to push all the parts on the connecting plate 262 to be located relative to the third clamping assembly 25, so as to achieve the straightening effect.

[0059] After completion, the second driving assembly 24 drives the rotating frame 22 to rotate, so that the third clamping assembly 25 and the fourth clamping assembly 26 approach the feeding device 5, and then are acquired by the first clamping assembly 52 and the second clamping assembly 53.

[0060] Based on the above, the shape of the metal pipe 41 when entering the supporting plate 21 is not fixed. If the directions of the two ends tilting are different, it cannot be acquired by the third clamping assembly 25 and the fourth clamping assembly 26. Therefore, the orientations of the two ends of the metal pipe 41 need to be adjusted before acquisition. In this embodiment, a wire-hooking member 267 is provided on the side of the second clamping member 265 close to the supporting portion. The wire-hooking member 267 is in the shape of a "7". First, driven by the second driving assembly 24 and the rotating frame 22, the two ends of the metal pipe 41 are first placed within the wire-hooking members 267 of the third clamping assembly 25 and the fourth clamping assembly 26. Then, the pushing member 263 drives the second clamping member 265 and the wire-hooking member 267 to move downward and apply pressure to the metal pipe 41, so that the two ends thereof bend in the direction of the movement of the wire-hooking member 267, making it meet the requirements for being grabbed by the third clamping assembly 25 and the fourth clamping assembly 26. Finally, through the telescopic action of the pushing member 263 and the cooperation of the second driving member and the rotating frame 22, the third clamping assembly 25 and the fourth clamping assembly 26 grab the two ends of the metal pipe 41.

[0061] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0062] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision positioning flexible metal tube punching machine, characterized in that: Comprising; A straightening device (2) for straightening a metal tube (41); A feeding device (5) for obtaining the metal tube (41) in the straightening device (2) and transferring the metal tube (41) to the positioning device (1); The positioning device (1) includes a base (11) and a laser positioning assembly (14). A placement groove (12) is provided on the base (11), and a punching groove (13) corresponding to the cutting knife (31) is provided at the placement groove (12). The laser positioning assembly (14) emits at least two lasers for simultaneously positioning different positions of the cutting part (42) of the metal tube (41) in multiple directions; A cutting device (3) is provided with a cutting knife (31) that penetrates into the cutting part (42) to cut off the metal tube (41).

2. A high-precision positioning flexible metal tube punching machine according to claim 1, characterized in that: The cutting part (42) of the metal tube (41) is inclined. The laser positioning assembly (14) relatively emits two lasers, which respectively correspond to two sides of the cutting part (42) of the metal tube (41), and the two lasers respectively correspond to the punching grooves (13).

3. A high-precision positioning flexible metal tube punching machine according to claim 1, characterized in that: The feeding device (5) includes a fixed seat (51). A first clamping assembly (52) and a second clamping assembly (53) are slidably connected to the fixed seat (51). The first clamping assembly (52) and the second clamping assembly (53) can respectively extend to both sides of the base (11); A first driving assembly is installed on the fixed seat (51), and the first driving assembly can independently drive the first clamping assembly (52) and the second clamping assembly (53).

4. A high-precision positioning flexible metal tube punching machine according to claim 3, characterized in that: The first clamping assembly (52) and the second clamping assembly (53) respectively form a first clamping position (571) and a second clamping position (572). The first clamping position (571) and the second clamping position (572) are adapted to the shape of the metal tube (41), and the first clamping position (571), the second clamping position (572) and the placement position are coaxially arranged.

5. A high-precision positioning flexible metal tube punching machine according to claim 4, characterized in that: The first clamping assembly (52) and the second clamping assembly (53) have the same structure and include a first sliding seat (521). A bracket (522) is installed on the first sliding seat (521). The bracket (522) is slidably connected to the first sliding seat (521), and the bracket (522) is connected to the output end of a second cylinder (55). A first clamping member is installed on the bracket (522).

6. A high-precision positioning flexible metal tube punching machine according to claim 5, characterized in that: The first clamping member includes a first cylinder (523) and a fixed cover (524). Two clamping arms (525) are rotatably connected to the fixed cover (524). A spring (526) is provided between the two clamping arms (525). The output end of the first cylinder (523) is provided with a top contact block (527) that extends into the fixed cover (524). The top contact block (527) abuts against the two clamping arms (525) and pushes the two clamping arms (525) to rotate.

7. A high-precision positioning flexible metal tube punching machine according to claim 5, characterized in that: The bracket (522) includes a second sliding seat (5221) and a third sliding seat (5222). The second sliding seat (5221) is slidably connected to the first sliding seat (521), and a third cylinder (5223) is installed on the second sliding seat (5221). The third sliding seat (5222) is slidably connected to the second sliding seat, and the sliding direction of the third sliding seat (5222) is the same as the extending direction of the metal pipe (41). The output end of the third cylinder (5223) is connected to the third sliding seat (5222), and the third cylinder (5223) releases as a buffer during cutting.

8. A high-precision positioning flexible metal tube punching machine according to claim 1, characterized in that: The straightening device (2) includes a supporting plate (21) and a rotating frame (22); The supporting plate (21) is used for placing the metal pipe (41), and an alignment component (23) is installed on one side of the supporting plate (21); The rotating frame (22) is connected to the second driving component (24), and a third clamping component (25) and a fourth clamping component (26) are installed on the rotating frame (22).

9. A high-precision positioning flexible metal tube punching machine according to claim 8, characterized in that: The fourth clamping component (26) includes a fourth cylinder (261). A connecting plate (262) is installed at the output of the fourth cylinder (261). A pushing component (263) and a fourth sliding seat (264) are installed on the connecting plate (262). The pushing component (263) is connected to the fourth sliding seat (264), and a second clamping component (265) is installed on the fourth sliding seat (264).

10. A high-precision positioning flexible metal tube punching machine according to claim 9, characterized in that: A wire-hooking member (267) is provided on the side of the second clamping component (265) close to the supporting portion.

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