Bending die for bending micro-diameter thin-wall pipe of heat exchanger

Abstract

The invention provides a bending die for bending a micro-diameter thin-wall pipe of a heat exchanger, and relates to the technical field of pipe bending. The bending die comprises a supporting mechanism, a driving mechanism, a bending mechanism, a positioning mechanism and a detecting mechanism; the driving mechanism is mounted at the top of the supporting mechanism; the bending mechanism is mounted on the driving mechanism, a pipe to be bent is arranged between the supporting mechanism and the bending mechanism, and the bending mechanism is used for bending the pipe; the number of the positioning mechanisms is two, and the two positioning mechanisms are installed on the supporting mechanism. The detection mechanism is installed on the top of the supporting mechanism and used for detecting the bent pipe. On the premise that the positioning effect is guaranteed, the two ends of the pipe are prevented from being damaged, and the bending quality of the pipe is improved; the problems that due to the fact that an existing limiting plate does not have the moving effect on the premise that the positioning effect is guaranteed, when a pipe is bent, the two ends of the pipe are prone to deformation, and the bending quality of the pipe is reduced are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of tube bending, and more specifically, particularly relates to a bending die for bending micro-diameter thin-wall tubes of heat exchangers. Background Art

[0002] ‌A bent heat exchanger is a special heat exchanger design in which the tubes are bent to suit specific process requirements or working environments.‌ This design allows the tube bundle to be pulled out of the shell for easy cleaning and maintenance. Common bent heat exchangers include U-tube heat exchangers and immersed coil heat exchangers.‌ The pipes on the bent heat exchanger need to be bent using a bending die.

[0003] The pipe bending dies currently used still have the following problems: 1. Generally, the two ends of the pipe to be bent are positioned by a limit plate. Since the current limit plate does not have a moving effect under the premise of ensuring the positioning effect, the two ends of the pipe are prone to deformation when the pipe is bent, which reduces the bending quality of the pipe; 2. Usually there is a lack of detection structure, which means that the bent pipes need to be transferred to the detection process for detection. It is inconvenient for the staff to promptly detect whether the bent pipes meet the processing requirements after bending, which increases the output of defective products. Summary of the invention

[0004] The disclosed embodiment relates to a bending die for bending micro-diameter thin-walled tubes of heat exchangers, which has a positioning mechanism and a detection mechanism. Under the premise of ensuring the positioning effect, damage to the two ends of the tube is avoided, thereby improving the bending quality of the tube. The staff can stop bending the tube and then debug the die, thereby reducing the output of defective products. The problem that the two ends of the tube are prone to deformation and it is impossible to timely detect whether the bent tube meets the processing requirements is solved.

[0005] In a first aspect of the present disclosure, a bending die for bending a micro-diameter thin-walled tube of a heat exchanger is provided, which is used for bending the tube; the die comprises: a supporting mechanism, a driving mechanism, a bending mechanism, a positioning mechanism and a detecting mechanism; the driving mechanism is installed on the top of the supporting mechanism; the bending mechanism is installed on the driving mechanism, and a tube to be bent is provided between the supporting mechanism and the bending mechanism, and the bending mechanism is used for bending the tube; There are two groups of positioning mechanisms, and the two groups of positioning mechanisms are installed on the supporting mechanism, and the two groups of positioning mechanisms are used to position the pipe to be bent; the detection mechanism is installed on the top of the supporting mechanism, and the detection mechanism is used to detect the bent pipe.

[0006] In at least some embodiments, the support mechanism includes: a support base plate, a curved support block and a limit pin A; a mounting hole is opened at the corner of the support base plate; the curved support block is placed on the top of the support base plate; there are two limit pins A, and the two limit pins A are inserted into the interior of the support base plate and the curved support block.

[0007] In at least some embodiments, the driving mechanism includes: an electric cylinder, a driving block and a connecting plug; there are two electric cylinders in total, and the two electric cylinders are fixedly mounted on a supporting base plate; the driving block is fixedly mounted on the output shafts of the two electric cylinders; and the connecting plug is slidably mounted on the outside of the driving block.

[0008] In at least some embodiments, the driving mechanism further includes: a rectangular limit block, a coil spring A and a handle; there are two rectangular limit blocks in total, and the two rectangular limit blocks are fixedly mounted on the driving block, and the two rectangular limit blocks are also inserted into the connecting plug; there are three coil springs A in total, and the three coil springs A are mounted inside the driving block, and the left sides of the three coil springs A are in contact with the connecting plug; the handle is fixedly mounted on the top of the connecting plug.

[0009] In at least some embodiments, the bending mechanism includes: a bending frame, a bending roller and a limit pin B; the bending frame is slidably mounted on the connecting plug, and the bending frame is located directly to the right of the bending support block; there are two bending rollers, and the two bending rollers are rotatably mounted on the bending frame; there are two limit pins B, and the two limit pins B are inserted into the bending frame and the connecting plug.

[0010] In at least some embodiments, the positioning mechanism includes: a rectangular movable plate, a limiting screw and a rectangular baffle; the rectangular movable plate is slidably installed inside the supporting base plate, and a row of limiting circular holes is opened on the rectangular movable plate; the limiting screw is threadedly connected to the supporting base plate, and the limiting screw is also inserted into the limiting circular hole; the rectangular baffle is installed on the outer end of the rectangular movable plate by screws.

[0011] In at least some embodiments, the positioning mechanism also includes: a circular reset shaft, a movable positioning plate and a coil spring B; there are two circular reset shafts, and the two circular reset shafts are fixedly mounted on the rectangular movable plate; the movable positioning plate is slidably mounted on the rectangular movable plate and the two circular reset shafts, and the inner side of the movable positioning plate is in contact with the pipe to be bent; there are two coil springs B, and the two coil springs B are mounted on the outside of the two circular reset shafts, and the two coil springs B are located between the rectangular baffle and the movable positioning plate.

[0012] In at least some embodiments, the detection mechanism includes: a detection mounting seat, a circular guide shaft, a rectangular connecting sleeve and a tilt detection frame; the detection mounting seat is installed on the top of the supporting base plate by screws; there are two circular guide shafts, and the two circular guide shafts are slidably installed on the detection mounting seat; the rectangular connecting sleeve is fixedly installed on the left side of the two circular guide shafts; the tilt detection frame is slidably installed on the rectangular connecting sleeve, and the tilt detection frame and the rectangular connecting sleeve are fixedly connected by two screws.

[0013] In at least some embodiments, the detection mechanism also includes: a limit clamp, a coil spring C, a circular detection rod and a detection disc; there are two limit clamps in total, and the two limit clamps are fixedly installed on the outside of the two circular guide shafts, and the left sides of the two limit clamps are in contact with the detection mounting seat; there are two coil springs C in total, and the two coil springs C are installed on the outside of the two circular guide shafts, and the two coil springs C are located between the detection mounting seat and the rectangular connecting sleeve; the circular detection rod is fixedly installed on the right side of the rectangular connecting sleeve; the detection disc is fixedly installed on the right side of the circular detection rod.

[0014] In at least some embodiments, the detection mechanism also includes: a battery, a buzzer and a switch; the battery is fixedly mounted on the right side of the detection mount; the buzzer is fixedly mounted on the top of the detection mount, and the buzzer is electrically connected to the battery; the switch is fixedly mounted inside the detection mount, and the switch is concentrically arranged with the detection disc; the diameter of the switch is smaller than the diameter of the detection disc, and the switch is electrically connected to the battery and the buzzer; the buzzer works when the switch is pressed.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention facilitates the staff to replace the bending support blocks and bending frames of different sizes according to the bending requirements of the pipe, and has strong versatility; when the output shafts of the two electric cylinders extend, the bending frame drives the two bending rollers to move to the left, realizing the automatic bending of the pipe; In addition, when the staff pulls the handle to the right, the two bending rollers can move to the right, which makes it convenient for the staff to place the pipe to be bent between the bending support block and the two bending rollers, and also makes it convenient for the staff to remove the bent pipe; when the staff releases the handle, the connecting plug automatically resets under the action of the three coil springs A, which plays a limiting role on the pipe to be bent and ensures that the pipe to be bent can fit tightly with the bending support block.

[0016] 2. The present invention facilitates the staff to properly adjust the position of the movable positioning plate, so as to control the bending position of the pipe; when the pipe is bent, the pipe can push the movable positioning plate to move outward, thus avoiding damage to both ends of the pipe while ensuring the positioning effect, thereby improving the bending quality of the pipe.

[0017] 3. The present invention facilitates the staff to properly adjust the height of the tilt detection frame according to the diameter of the pipe; after the pipe is bent, the staff passes the bent position of the pipe through the gap between the support bottom plate and the tilt detection frame. When the bent pipe can smoothly pass through the gap between the support bottom plate and the tilt detection frame, the pipe bending is qualified; when the bent pipe is deformed and cannot smoothly pass through the gap between the support bottom plate and the tilt detection frame, the pipe bending is unqualified; In addition, when the pipe is unqualified after bending, the pipe can drive the tilt detection frame to move to the right at the same time when it moves to the right. When the switch is pressed, the buzzer works, which is convenient for reminding the staff that the pipe bending is unqualified. At this time, the staff can stop bending the pipe and then debug the mold to reduce the output of unqualified products. When the detection disc contacts the detection mounting seat, the detection disc can stop moving, which protects the switch and avoids damage to the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0021] Figure 2 The present invention is shown Figure 1 Schematic diagram of the left perspective structure.

[0022] Figure 3 A structural schematic diagram of the support mechanism of the present invention is shown.

[0023] Figure 4 The schematic diagram of the structure of the driving mechanism and the bending mechanism of the present invention is shown.

[0024] Figure 5 The present invention is shown Figure 1 Schematic diagram of the local enlarged structure of area A in the middle.

[0025] Figure 6 The present invention is shown Figure 4 Schematic diagram of the central cut structure.

[0026] Figure 7 The present invention is shown Figure 1 Schematic diagram of the main viewing angle structure.

[0027] Figure 8 The present invention is shown Figure 7Schematic diagram of the cross-section structure in the BB direction.

[0028] Fig. 9 The present invention is shown Figure 1 Schematic diagram of the local enlarged structure of the C area in the middle.

[0029] Fig.10 The present invention is shown Figure 8 Schematic diagram of the local enlarged structure of area D in the middle.

[0030] Fig.11 The schematic diagram of the structure of the detection mechanism of the present invention is shown.

[0031] Fig.12 The present invention is shown Figure 7 Schematic diagram of the local enlarged structure of area E in the middle.

[0032] List of reference numerals: 1. Support mechanism; 101. Support base plate; 102. Bending support block; 103. Limiting pin A; 2. Driving mechanism; 201. Electric cylinder; 202. Driving block; 203. Connecting plug; 204. Rectangular stop block; 205. Coil spring A; 206. Handle; 3. Bending mechanism; 301. Bending frame; 302. Bending roller; 303. Limiting pin B; 4. Positioning mechanism; 401. Rectangular movable plate; 4011. Positioning circular hole; 402. Positioning screw; 403. Rectangular baffle; 404. Circular reset shaft; 405. Movable positioning plate; 406. Coil spring B; 5. Pipe material; 6. Detection mechanism; 601. Detection mounting seat; 602. Circular guide shaft; 603. Rectangular connecting sleeve; 604. Tilt detection frame; 605. Limiting clamp ring; 606. Coil spring C; 607. Circular detection rod; 608. Detection disc; 609. Battery; 610. Buzzer; 611. Switch. DETAILED DESCRIPTION

[0033] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0034] Example: Please refer to Figures 1 to 12As shown: The present invention provides a bending die for bending a micro-diameter thin-walled tube of a heat exchanger, which is used for bending a tube 5; it comprises: a supporting mechanism 1, a driving mechanism 2, a bending mechanism 3, a positioning mechanism 4 and a detecting mechanism 6; the driving mechanism 2 is installed on the top of the supporting mechanism 1; the bending mechanism 3 is installed on the driving mechanism 2, and a tube 5 to be bent is provided between the supporting mechanism 1 and the bending mechanism 3, and the bending mechanism 3 is used for bending the tube 5; There are two sets of positioning mechanisms 4, and the two sets of positioning mechanisms 4 are installed on the supporting mechanism 1, and the two sets of positioning mechanisms 4 are used to position the pipe 5 to be bent; the detection mechanism 6 is installed on the top of the supporting mechanism 1, and the detection mechanism 6 is used to detect the pipe 5 after bending.

[0035] In the present disclosure, Figures 3 to 6 As shown, the support mechanism 1 includes: a support base plate 101, a bending support block 102 and a limit pin A103; a mounting hole is opened at the corner of the support base plate 101; the bending support block 102 is placed on the top of the support base plate 101; there are two limit pins A103, and the two limit pins A103 are inserted into the inside of the support base plate 101 and the bending support block 102; The driving mechanism 2 includes: an electric cylinder 201, a driving block 202 and a connecting plug 203; there are two electric cylinders 201, and the two electric cylinders 201 are fixedly installed on the supporting base plate 101; the driving block 202 is fixedly installed on the output shafts of the two electric cylinders 201; the connecting plug 203 is slidably installed on the outside of the driving block 202; the driving mechanism 2 also includes: a rectangular limit block 204, a coil spring A205 and a handle 206; there are two rectangular limit blocks 204, and the two rectangular limit blocks 204 are fixedly installed on the driving block 202, and the two rectangular limit blocks 204 are also inserted into the connecting plug 203; there are three coil springs A205, and the three coil springs A205 are installed inside the driving block 202, and the left sides of the three coil springs A205 are in contact with the connecting plug 203; the handle 206 is fixedly installed on the top of the connecting plug 203; The bending mechanism 3 includes: a bending frame 301, a bending roller 302 and a limit pin B303; the bending frame 301 is slidably mounted on the connecting plug 203, and the bending frame 301 is located directly to the right of the bending support block 102; there are two bending rollers 302, and the two bending rollers 302 are rotatably mounted on the bending frame 301; there are two limit pins B303, and the two limit pins B303 are inserted into the bending frame 301 and the connecting plug 203; Its specific functions are as follows: because the two limit pins A103 are inserted into the inside of the support base plate 101 and the bending support block 102, and the two limit pins B303 are inserted into the inside of the bending frame 301 and the connecting plug 203, it is convenient for the staff to replace the bending support blocks 102 and the bending frames 301 of different sizes according to the bending requirements of the pipe 5, and the versatility is strong; because the two electric cylinders 201 are fixedly installed on the support base plate 101, and the driving blocks 202 are fixedly installed on the output shafts of the two electric cylinders 201, when the output shafts of the two electric cylinders 201 extend, the bending frame 301 drives the two bending rollers 302 to move to the left, thereby realizing the automatic bending of the pipe 5; Because the handle 206 is fixedly installed on the top of the connecting plug 203, when the staff pulls the handle 206 to the right, the two bending rollers 302 can move to the right, which is convenient for the staff to place the pipe 5 to be bent between the bending support block 102 and the two bending rollers 302, and also convenient for the staff to remove the bent pipe 5; and because the three coil springs A205 are installed inside the driving block 202, and the left sides of the three coil springs A205 are in contact with the connecting plug 203, when the staff releases the handle 206, the connecting plug 203 automatically resets under the action of the three coil springs A205, which plays a limiting role on the pipe 5 to be bent, ensuring that the pipe 5 to be bent can fit tightly with the bending support block 102.

[0036] In the present disclosure, Figures 8 to 10 As shown, the positioning mechanism 4 includes: a rectangular movable plate 401, a limiting screw 402 and a rectangular baffle 403; the rectangular movable plate 401 is slidably mounted inside the supporting base plate 101, and a row of limiting circular holes 4011 are provided on the rectangular movable plate 401; the limiting screw 402 is threadedly connected to the supporting base plate 101, and the limiting screw 402 is also inserted into the limiting circular hole 4011; the rectangular baffle 403 is mounted on the outer end of the rectangular movable plate 401 by screws; the positioning mechanism 4 also includes: a circular reset shaft 404, a movable positioning plate 405 and Coil spring B406; there are two circular reset shafts 404, and the two circular reset shafts 404 are fixedly mounted on the rectangular movable plate 401; the movable positioning plate 405 is slidably mounted on the rectangular movable plate 401 and the two circular reset shafts 404, and the inner side of the movable positioning plate 405 is in contact with the pipe 5 to be bent; there are two coil springs B406, and the two coil springs B406 are mounted on the outside of the two circular reset shafts 404, and the two coil springs B406 are located between the rectangular baffle 403 and the movable positioning plate 405; Its specific function is: because the rectangular movable plate 401 is slidably installed inside the supporting base plate 101, and the limit screw 402 is threadedly connected to the supporting base plate 101, and the limit screw 402 is also inserted in the limit circular hole 4011, it is convenient for the staff to appropriately adjust the position of the movable positioning plate 405, so as to control the bending position of the pipe 5; and because the two coil springs B406 are installed on the outside of the two circular reset shafts 404, and the two coil springs B406 are located between the rectangular baffle 403 and the movable positioning plate 405, when the pipe 5 bends, the pipe 5 can push the movable positioning plate 405 to move outward, and on the premise of ensuring the positioning effect, damage to the two ends of the pipe 5 is avoided, thereby improving the bending quality of the pipe 5.

[0037] In the present disclosure, Fig.11 and Fig.12 As shown, the detection mechanism 6 includes: a detection mounting seat 601, a circular guide shaft 602, a rectangular connecting sleeve 603 and a tilt detection frame 604; the detection mounting seat 601 is installed on the top of the supporting base plate 101 by screws; there are two circular guide shafts 602, and the two circular guide shafts 602 are slidably mounted on the detection mounting seat 601; the rectangular connecting sleeve 603 is fixedly mounted on the left side of the two circular guide shafts 602; the tilt detection frame 604 is slidably mounted on the rectangular connecting sleeve 603, and the tilt detection frame 604 is fixedly connected to the rectangular connecting sleeve 603 by two screws; the detection mechanism 6 also includes: a limit collar 605, a coil spring C606, a circular detection rod 607 and a detection disc 608; there are two limit collars 605, and the two limit collars 605 are fixedly mounted on the outside of the two circular guide shafts 602, and the left sides of the two limit collars 605 are in contact with the detection mounting seat 601; the coil spring C606 There are two coil springs C606, and the two coil springs C606 are installed on the outside of the two circular guide shafts 602, and the two coil springs C606 are located between the detection mounting seat 601 and the rectangular connecting sleeve 603; the circular detection rod 607 is fixedly installed on the right side of the rectangular connecting sleeve 603; the detection disc 608 is fixedly installed on the right side of the circular detection rod 607; the detection mechanism 6 also includes: a battery 609, a buzzer 610 and a switch 611; the battery 609 is fixedly installed on the right side of the detection mounting seat 601; the buzzer 610 is fixedly installed on the top of the detection mounting seat 601, and the buzzer 610 is electrically connected to the battery 609; the switch 611 is fixedly installed inside the detection mounting seat 601, and the switch 611 is concentrically arranged with the detection disc 608; the diameter of the switch 611 is smaller than the diameter of the detection disc 608, and the switch 611 is electrically connected to the battery 609 and the buzzer 610; when the switch 611 is pressed, the buzzer 610 works; The specific function is as follows: since the tilt detection frame 604 is slidably mounted on the rectangular connection sleeve 603, and the tilt detection frame 604 and the rectangular connection sleeve 603 are fixedly connected by two screws, it is convenient for the staff to properly adjust the height of the tilt detection frame 604 according to the diameter of the pipe 5; after the pipe 5 is bent, the staff passes the bent position of the pipe 5 through the gap between the support bottom plate 101 and the tilt detection frame 604. When the bent pipe 5 can smoothly pass through the gap between the support bottom plate 101 and the tilt detection frame 604, the bending of the pipe 5 is qualified; when the bent pipe 5 is deformed and cannot smoothly pass through the gap between the support bottom plate 101 and the tilt detection frame 604, the bending of the pipe 5 is unqualified; Because the switch 611 is fixedly installed inside the detection mounting base 601, and the switch 611 is concentrically arranged with the detection disc 608, and the switch 611 is electrically connected to the battery 609 and the buzzer 610, when the bent pipe 5 is unqualified, the pipe 5 can drive the tilt detection frame 604 to move to the right at the same time when it moves to the right, and the buzzer 610 works when the switch 611 is pressed, which is convenient for reminding the staff that the bending of the pipe 5 is unqualified; at this time, the staff can stop bending the pipe 5, and then debug the mold, reducing the output of unqualified products; and because the diameter of the switch 611 is smaller than the diameter of the detection disc 608, when the detection disc 608 contacts the detection mounting base 601, the detection disc 608 can stop moving, which protects the switch 611 and avoids damage to the switch 611.

[0038] The specific usage and function of this embodiment are as follows: Before use, the staff replaces the appropriate bending support block 102 and the bending mechanism 3 according to the model of the pipe 5; then, according to the model of the pipe 5, the staff appropriately adjusts the height of the tilt detection frame 604 by a wrench; then, according to the length of the pipe 5 and the bending position of the pipe 5, the positions of the two rectangular movable plates 401 are appropriately adjusted to ensure that the two limit screws 402 are screwed in and inserted into the corresponding two limit circular holes 4011; When the pipe 5 needs to be bent, the staff pulls the handle 206 to the right, and then places the pipe 5 to be bent between the bending support block 102 and the two bending rollers 302 to ensure that the two ends of the pipe 5 to be bent are in contact with the two movable positioning plates 405; then release the handle 206; at this time, the connecting plug 203 automatically resets under the action of the three coil springs A205, which plays a limiting role for the pipe 5 to be bent, ensuring that the pipe 5 to be bent can fit tightly with the bending support block 102; then start the two electric cylinders 201 to extend the output shafts of the two electric cylinders 201. When the output shafts of the two electric cylinders 201 extend, the bending frame 301 drives the two bending rollers 302 to move to the left, thereby realizing the automatic bending of the pipe 5; when the pipe 5 is bent, the pipe 5 can push the two movable positioning plates 405 to move outward, thereby avoiding damage to the two ends of the pipe 5 while ensuring the positioning effect, thereby improving the bending quality of the pipe 5; After the pipe 5 is bent, the staff retracts the output shafts of the two electric cylinders 201, then pulls the handle 206 to the right, then moves the bent pipe 5 to the right, and then slightly pulls the bent pipe 5 to separate the pipe 5 from the groove on the bending support block 102; the bent pipe 5 is placed on the top of the support base plate 101 to ensure that the bending position of the pipe 5 is below the tilt detection frame 604, and then moves the bent pipe 5 to the right. When the bent pipe 5 can smoothly pass through the gap between the support base plate 101 and the tilt detection frame 604, the pipe 5 is bent properly. When the bent pipe 5 is deformed and cannot pass smoothly, When there is a gap between the support base plate 101 and the tilt detection frame 604, the bending of the pipe 5 is unqualified; when the bent pipe 5 is unqualified, the tilt detection frame 604 can be driven to move to the right when the pipe 5 moves to the right, and the buzzer 610 works when the switch 611 is pressed, which is convenient for reminding the staff that the bending of the pipe 5 is unqualified; at this time, the staff can stop bending the pipe 5, and then debug the mold, reducing the output of unqualified products; when the detection disc 608 contacts the detection mounting seat 601, the detection disc 608 can stop moving, which protects the switch 611 and avoids damage to the switch 611.

[0039] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0040] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0041] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A bending die for bending a micro-diameter thin-walled tube of a heat exchanger, used for bending the tube (5); comprising: A support mechanism (1), a driving mechanism (2), a bending mechanism (3), a positioning mechanism (4) and a detection mechanism (6); characterized in that the driving mechanism (2) is mounted on the top of the support mechanism (1); the bending mechanism (3) is mounted on the driving mechanism (2), and a pipe (5) to be bent is provided between the support mechanism (1) and the bending mechanism (3), and the bending mechanism (3) is used to bend the pipe (5); The positioning mechanism (4) is provided with two groups in total, and the two groups of positioning mechanisms (4) are installed on the support mechanism (1), and the two groups of positioning mechanisms (4) are used to position the pipe (5) to be bent; the detection mechanism (6) is installed on the top of the support mechanism (1), and the detection mechanism (6) is used to detect the pipe (5) after bending.

2. A bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 1, characterized in that: The support mechanism (1) comprises: a support base plate (101), a curved support block (102) and a limit pin A (103); a mounting hole is provided at a corner of the support base plate (101); the curved support block (102) is placed on the top of the support base plate (101); and two limit pins A (103) are provided, and the two limit pins A (103) are inserted into the interior of the support base plate (101) and the curved support block (102).

3. A bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 2, characterized in that: The driving mechanism (2) comprises: an electric cylinder (201), a driving block (202) and a connecting plug (203); two electric cylinders (201) are provided, and the two electric cylinders (201) are fixedly mounted on a supporting base plate (101); the driving block (202) is fixedly mounted on the output shafts of the two electric cylinders (201); and the connecting plug (203) is slidably mounted on the outside of the driving block (202).

4. The bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 3, characterized in that: The driving mechanism (2) further comprises: a rectangular limit block (204), a coil spring A (205) and a handle (206); two rectangular limit blocks (204) are provided in total, and the two rectangular limit blocks (204) are fixedly mounted on the driving block (202), and the two rectangular limit blocks (204) are also inserted into the connecting plug (203); three coil springs A (205) are provided in total, and the three coil springs A (205) are mounted inside the driving block (202), and the left sides of the three coil springs A (205) are in contact with the connecting plug (203); and the handle (206) is fixedly mounted on the top of the connecting plug (203).

5. The bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 3, characterized in that: The bending mechanism (3) comprises: a bending frame (301), a bending roller (302) and a limit pin B (303); the bending frame (301) is slidably mounted on the connecting plug (203), and the bending frame (301) is located directly to the right of the bending support block (102); two bending rollers (302) are provided, and the two bending rollers (302) are rotatably mounted on the bending frame (301); and two limit pins B (303) are provided, and the two limit pins B (303) are inserted into the bending frame (301) and the connecting plug (203).

6. A bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 2, characterized in that: The positioning mechanism (4) comprises: a rectangular movable plate (401), a limiting screw (402) and a rectangular baffle (403); the rectangular movable plate (401) is slidably mounted inside the supporting base plate (101), and a row of limiting circular holes (4011) is provided on the rectangular movable plate (401); the limiting screw (402) is threadedly connected to the supporting base plate (101), and the limiting screw (402) is also inserted into the limiting circular hole (4011); the rectangular baffle (403) is mounted on the outer end of the rectangular movable plate (401) by means of screws.

7. A bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 6, characterized in that: The positioning mechanism (4) further comprises: a circular reset shaft (404), a movable positioning plate (405) and a coil spring B (406); two circular reset shafts (404) are provided, and the two circular reset shafts (404) are fixedly mounted on the rectangular movable plate (401); the movable positioning plate (405) is slidably mounted on the rectangular movable plate (401) and the two circular reset shafts (404), and the inner side of the movable positioning plate (405) is in contact with the pipe (5) to be bent; two coil springs B (406) are provided, and the two coil springs B (406) are mounted outside the two circular reset shafts (404), and the two coil springs B (406) are located between the rectangular baffle (403) and the movable positioning plate (405).

8. The bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 2, characterized in that: The detection mechanism (6) comprises: a detection mounting seat (601), a circular guide shaft (602), a rectangular connecting sleeve (603) and a tilt detection frame (604); the detection mounting seat (601) is mounted on the top of the supporting base plate (101) by means of screws; two circular guide shafts (602) are provided, and the two circular guide shafts (602) are slidably mounted on the detection mounting seat (601); the rectangular connecting sleeve (603) is fixedly mounted on the left side of the two circular guide shafts (602); the tilt detection frame (604) is slidably mounted on the rectangular connecting sleeve (603), and the tilt detection frame (604) and the rectangular connecting sleeve (603) are fixedly connected by means of two screws.

9. A bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 8, characterized in that: The detection mechanism (6) further comprises: a limit collar (605), a coil spring C (606), a circular detection rod (607) and a detection disc (608); two limit collars (605) are provided, and the two limit collars (605) are fixedly mounted on the outside of the two circular guide shafts (602), and the left sides of the two limit collars (605) are in contact with the detection mounting seat (601); two coil springs C (606) are provided, and the two coil springs C (606) are mounted on the outside of the two circular guide shafts (602), and the two coil springs C (606) are located between the detection mounting seat (601) and the rectangular connecting sleeve (603); the circular detection rod (607) is fixedly mounted on the right side of the rectangular connecting sleeve (603); and the detection disc (608) is fixedly mounted on the right side of the circular detection rod (607).

10. A bending die for bending micro-diameter thin-walled tubes of heat exchangers according to claim 9, characterized in that: The detection mechanism (6) further comprises: a battery (609), a buzzer (610) and a switch (611); the battery (609) is fixedly mounted on the right side of the detection mounting seat (601); the buzzer (610) is fixedly mounted on the top of the detection mounting seat (601), and the buzzer (610) is electrically connected to the battery (609); the switch (611) is fixedly mounted inside the detection mounting seat (601), and the switch (611) is concentrically arranged with the detection disc (608); the diameter of the switch (611) is smaller than the diameter of the detection disc (608), and the switch (611) is electrically connected to the battery (609) and the buzzer (610); and the buzzer (610) works when the switch (611) is pressed.

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