A rotary bending mechanism

Abstract

The present invention discloses a rotary bending mechanism, which belongs to the technical field of bending mechanisms. The present invention includes a chassis, a press cylinder is fixedly connected to the left side of the upper end of the chassis, and a push block is fixedly connected to the telescopic end of the press cylinder; it also includes: a pressing block installed below the right end of the press lever, the pressing block is installed on a guide seat, and the guide seat is fixed to the upper end of the chassis; a heating and cooling structure is installed on the bending block, the heating and cooling structure is used to heat the bent product during bending to reduce the product's own stress, and at the same time, it is used to cool the bent product after bending to avoid the bent product's temperature being too high and affecting normal handling. The rotary bending mechanism can bend the product by rotating in a circle during use, and fix the product to avoid scratches by cooperating with the press mechanism during operation, and facilitate auxiliary heating of the product during bending to reduce the product's own stress.

Description

Technical Field

[0001] The present invention relates to the technical field of bending mechanisms, in particular to a rotary bending mechanism. Background Art

[0002] When processing inverter components, a corresponding bending mechanism is usually used. The bending mechanism can be used to bend the metal components in the inverter, so that the metal components can be used as plug-in parts.

[0003] For example, an aluminum profile bending device with publication number CN211938545U includes a workbench, a support plate is fixedly arranged on the workbench, a drive motor is arranged on the top of the support plate, the drive motor is electrically connected to the stamping plate, the bottom of the stamping plate is electrically connected to the bending punch head, a heating coil is arranged inside the bending punch head, an aluminum profile is placed on the workbench, the aluminum profile is arranged below the bending punch head, a slot is opened on the workbench, the slot is arranged directly below the bending punch head, a support rod is fixedly arranged at the bottom of the slot, and a support head is arranged on the top of the support rod to contact the aluminum profile.

[0004] The above-mentioned prior art has the following technical problems: the existing bending mechanism usually uses a bending punch to move downward to bend the product when in use. However, direct downward pressure and contact with the product surface can easily scratch the product, and the vertical downward force during use cannot be guaranteed;

[0005] For example, a bending device with publication number CN210045809U includes a support base, a bending mechanism mounted on the support base, a support assembly, and a driver. The bending mechanism includes a sliding base slidably mounted on the support base, a positioning arm mounted on the sliding base, and a punch. The support assembly includes a support table, an adjustment member, and a bending table. The support table and the positioning arm are positioned opposite each other, and the adjustment member is connected to the bending table to adjust the relative position of the bending table and the punch. The driver is connected to the sliding base to drive the sliding base to move the positioning arm and the punch toward or away from the support table.

[0006] Among them, the above-mentioned prior art has the following technical problems: the existing bending device is not convenient for auxiliary heating of the product to be bent when bending the product, which causes the product to be bent to be in a low temperature state when bending, and easily causes the product to be brittle fracture, thereby reducing the bending effect of the product.

[0007] Therefore, we propose a rotary bending mechanism to solve the above problems. Summary of the Invention

[0008] The purpose of the present invention is to provide a rotary bending mechanism to solve the problem raised in the above background technology that the existing bending mechanisms on the market usually use a bending punch head to move downward to bend the product when in use. However, direct downward pressure and contact with the product surface are likely to scratch the product, and the vertical downward force is not easy to guarantee during use. When bending the product, it is not convenient to perform auxiliary heating on the product to be bent, which causes the product to be bent to be brittle when it is bent at a low temperature, thereby reducing the bending effect of the product.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a rotary bending mechanism, comprising a chassis, a press cylinder fixedly connected to the left side of the upper end of the chassis, and a push block fixedly connected to the telescopic end of the press cylinder, a pin at the upper end of the push block capable of sliding on the left end of a press lever, and a middle portion of the press lever mounted on a support frame via a pin;

[0010] Also includes:

[0011] A pressing block is installed below the right end of the pressing lever, and the pressing block is installed on a guide seat, and the guide seat is fixed to the upper end of the chassis;

[0012] A movable shaft is arranged on the right side of the lower end of the pressing block, the movable shaft is connected to the bending block, and the lower end of the bending block is installed with a central rotating shaft, the central rotating shaft is installed on the upper end of the positioning block, and the lower end of the positioning block is installed with a bending cylinder;

[0013] The heating and cooling structure is installed on the bending block. The heating and cooling structure is used to heat the bent product during bending to reduce the product's own stress. At the same time, it is used to cool the bent product after bending to prevent the bent product from being overly hot and affecting normal handling.

[0014] Preferably, the upper end pin shaft of the pressing block and the right end of the pressing lever are slidably connected, and the pressing block can slide vertically on the support frame.

[0015] By adopting the above technical solution, when the pressing lever rotates with the pushing block, the rotation of the pressing lever can make the pressing block slide on the support frame, thereby achieving limited pressing of the bent product.

[0016] Preferably, the central rotation axis of the upper end of the positioning block can move in the groove below the bending block, and the left end of the bending block can rotate around the movable axis.

[0017] By adopting the above technical solution, when the positioning block moves upward, the central rotation axis at the upper end can slide under the bending block, thereby allowing the bending block to rotate around the movable axis to bend the product in a rotational manner.

[0018] Preferably, the heating and cooling structure is composed of a connecting groove, a heater, an extrusion block, a sleeve spring, a steel ball, a pull rope, a guide column, a built-in spring, a positioning frame, a clamping block, a guide pipe, an air intake pipe, a one-way valve, an air injection hose, an air outlet plate, a stretching air bag, a connecting pipe, a main air bag, a leakage port, a rubber sleeve, a magnetic block and a refrigerator;

[0019] A connecting groove is provided inside the side of the bending block, a heater for heating the airflow is fixedly connected to the inside of the connecting groove, an extrusion block is installed inside the connecting groove, the extrusion block is connected to the inside of the connecting groove through a sleeve spring, and a steel ball is installed inside the extrusion block;

[0020] A pull rope is used to connect the guide column and the extrusion block, the guide column is connected to each other through a built-in spring and the interior of the clamping block, and the interior of the clamping block is fixedly connected to a positioning frame;

[0021] A guide pipe is used to connect the connecting groove and the clamping block. An air intake pipe is installed below the connecting groove, and both the air intake pipe and the guide pipe are installed with a one-way valve. The clamping block is connected to each other through an air injection hose and an air outlet plate.

[0022] The stretching airbag is located between the air outlet plate and the upper end of the bending block, and the air outlet plate is bonded to the stretching airbag. The stretching airbag is connected to the main airbag through a connecting pipe, and the main airbag is located on the side of the guide column;

[0023] The leakage port is opened on the guide column. A rubber sleeve is provided above the guide column, and magnetic blocks are installed on the upper end of the rubber sleeve and inside the clamping block. The middle part of the inner side of the clamping block is fixedly connected with a refrigerator.

[0024] Preferably, the steel ball can roll inside the extrusion block, and the extrusion block and the connecting groove are seamlessly slidably connected.

[0025] By adopting the above technical solution, when the extrusion block rotates around the movable axis to bend the product, the steel ball rolls to the left end of the extrusion block, thereby pushing the extrusion block to move inside the connecting groove.

[0026] Preferably, the left and right ends of the guide column are heat insulation plates, and the guide column forms an elastic telescopic structure through a built-in spring and a clamping block, and the heat insulation plates at the left and right ends of the guide column fit together with the inner wall of the positioning frame.

[0027] By adopting the above technical solution, the setting of the built-in spring can make the guide column reset and rebound after moving.

[0028] Preferably, the lower end of the air outlet plate can rotate on the bending block, and the interior of the air outlet plate is configured as a hollow structure, and air jets are evenly distributed on the sides of the air outlet plate.

[0029] By adopting the above technical solution, the air outlet plate is rotated on the bending block so that the air jets thereon can be aligned with the bent product.

[0030] Preferably, the main airbag is squeezed by the right end of the guide column in the initial state, and both the main airbag and the stretch airbag are made of elastic rubber.

[0031] By adopting the above technical solution, when the main airbag is squeezed by the guide column, the airflow inside the main airbag can enter the interior of the stretch airbag through the connecting pipe.

[0032] Preferably, the magnetic block at the upper end of the rubber sleeve and the magnetic block at the inner top of the clamping block have opposite magnetic properties, and the magnetic blocks are evenly distributed at equal intervals at the inner top of the clamping block.

[0033] By adopting the above technical solution, when the magnetic block on the rubber sleeve and the magnetic block inside the clamping block approach each other, the rubber sleeve can be stretched and expanded.

[0034] Compared with the prior art, the present invention has the following advantages: the rotary bending mechanism can bend the product by rotating in a circular center during use, and can fix the product to avoid scratches by cooperating with the pressing mechanism during operation. It is also convenient to perform auxiliary heating on the product during bending, thereby reducing the product's own stress.

[0035] 1. A pressing block is provided. When the pushing block moves upward, the right end of the pressing lever rotates downward, thereby pushing the pressing block downward on the support frame. The product can be pressed and positioned by the movement of the pressing block. At the same time, when the positioning block moves upward, the bending block can rotate around the movable axis. By rotating the bending block, the product can be bent in a circular rotation manner, ensuring sufficient bending force and making the bending angle more accurate.

[0036] 2. An extrusion block is provided. When the bending block is rotated and tilted upward, the steel ball rolls to the bottom of the extrusion block and then the extrusion block moves inside the clamping block. After the extrusion block moves, the hot air flow inside the connecting groove can be squeezed out to the air outlet plate. The hot air flow ejected outward from the air outlet on the air outlet plate heats the bent product. When the extrusion block moves, the guide column can be pulled to move by the pull rope. After the guide column moves, the extrusion of the main airbag can be released. At this time, the air flow inside the stretched airbag flows back to the inside of the main airbag. After the pull rope airbag contracts, the air outlet plate is pulled to rotate, so that the air outlet on the side of the air outlet plate is facing the product for jet heating;

[0037] 3. A rubber sleeve is provided. When the bending block rotates and resets, the extrusion block and the guide column reset and rebound under the action of the sleeve spring and the built-in spring respectively. After the guide column resets, the magnetic block on the rubber sleeve and the magnetic block inside the clamping column approach each other, and the rubber sleeve expands. When the magnetic block on the rubber sleeve and the magnetic block inside the clamping column move away from each other, the rubber sleeve recovers. Through the expansion and recovery of the rubber sleeve, the cold air cooled by the refrigerator can also be ejected outward through the air jet on the air outlet plate. The ejected cold air can cool the bent product. When the guide column gradually resets, the main airbag can be squeezed again. After the main airbag is pressurized, its stretching airbag gradually expands, thereby pushing the air outlet plate to reset. The gradual reset of the air outlet plate enables the air jet on it to align with the bent product for jet cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention;

[0039] Figure 2 This is a schematic side view of the three-dimensional structure of the present invention;

[0040] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning block and the central rotating shaft of the present invention;

[0041] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping block and the air outlet plate of the present invention;

[0042] Figure 5 This is a schematic cross-sectional view of the bending block and the connecting groove of the present invention;

[0043] Figure 6 This is a schematic cross-sectional view of the extrusion block and steel ball of the present invention;

[0044] Figure 7 For the present invention Figure 5 A in the middle is an enlarged structural diagram;

[0045] Figure 8 This is a schematic diagram of the three-dimensional structure of the guide column and the rubber sleeve of the present invention;

[0046] Figure 9 This is a schematic cross-sectional structural diagram of the guide column and the refrigerator of the present invention.

[0047] In the figure: 1, chassis; 2, press cylinder; 3, push block; 4, press lever; 5, support frame; 6, pressing block; 7, guide seat; 8, movable shaft; 9, bending block; 10, bending cylinder; 11, positioning block; 12, central shaft; 13, heating and cooling structure; 131, connecting groove; 132, heater; 133, extrusion block; 134, sleeve spring; 135, steel ball; 136, pull rope; 13 7. Guide column; 138. Built-in spring; 139. Positioning frame; 1310. Clamping block; 1311. Flow guide tube; 1312. Intake tube; 1313. One-way valve; 1314. Air injection hose; 1315. Air outlet plate; 1316. Stretch airbag; 1317. Connecting pipe; 1318. Main airbag; 1319. Leakage port; 1320. Rubber sleeve; 1321. Magnetic block; 1322. Refrigerator. Implementation Method

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] See also Figure 1-9 , the present invention provides the following two embodiments: Example

[0050] The existing bending mechanism usually uses the bending punch head to move downward to bend the product when in use. However, direct downward pressure and contact with the product surface are likely to scratch the product, and the vertical downward force is not guaranteed during use. In order to solve this technical problem, this embodiment provides the following technical content, such as Figure 1-3 As shown;

[0051] A rotary bending mechanism includes a chassis 1, a pressing cylinder 2 is fixedly connected to the left side of the upper end of the chassis 1, and a propulsion block 3 is fixedly connected to the telescopic end of the pressing cylinder 2, the pin at the upper end of the propulsion block 3 can slide on the left end of the pressing lever 4, and the middle part of the pressing lever 4 is installed on the support frame 5 through the pin; a pressing block 6 is installed below the right end of the pressing lever 4, the pressing block 6 is installed on the guide seat 7, and the guide seat 7 is fixed to the upper end of the chassis 1; a movable shaft 8 is arranged on the right side of the lower end of the pressing block 6, a bending block 9 is connected to the movable shaft 8, and the lower end of the bending block 9 is installed with a central rotating shaft 12, the central rotating shaft 12 is installed on the upper end of the positioning block 11, and the lower end of the positioning block 11 is installed with a bending cylinder 10; the upper end pin of the pressing block 6 and the right end of the pressing lever 4 are slidably connected, and the pressing block 6 can slide vertically on the support frame 5. The central rotation axis 12 at the upper end of the positioning block 11 can move in the groove below the bending block 9, and the left end of the bending block 9 can rotate around the movable axis 8.

[0052] When the cam 11 is moved upward, the center axis 12 can slide on the lower end of the bending block 9, thereby making the left end of the bending block 9 rotate upward around the movable axis 8. The product can be bent in a circular rotation manner by rotating the bending block 9, thereby ensuring that the bending force is sufficient to make the bending angle more accurate. Example

[0053] The rotary bending mechanism disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiment 1. The existing bending mechanism is not convenient for auxiliary heating of the product to be bent when bending the product, which causes the product to be bent to be brittle when the temperature of the product itself is low during bending, thereby reducing the bending effect of the product. At the same time, it is not convenient to cool the heated product after bending. When the staff takes the bent product, it is easy to affect the normal taking of the bent product due to the high temperature. When heating the product, it is not convenient to make the hot air outlet and the cold air outlet face the bent product, thereby reducing the heating and cooling effects of the product. In order to further solve this technical problem, this embodiment discloses the following contents. Figure 4-9 As shown;

[0054] The heating and cooling structure 13 is installed on the bending block 9. The heating and cooling structure 13 is used to heat the bent product during bending to reduce the product's own stress. At the same time, it is used to cool the bent product after bending to prevent the bent product from being overheated and affecting normal handling. The heating and cooling structure 13 consists of a connecting groove 131, a heater 132, an extrusion block 133, a sleeve spring 134, a steel ball 135, a pull rope 136, a guide column 137, an internal spring 138, a positioning frame 139, a clamping block 1310, a guide pipe 1311, an air intake pipe 1312, a one-way valve 1313, an air injection hose 1314, an air outlet plate 1315, a stretching airbag 1316, a connecting pipe 1317, a main airbag 1318, a leakage port 1319, a rubber sleeve 1320, a magnetic block 1321 and The cooling device 1322 is composed of a connecting groove 131, which is provided inside the side of the bending block 9. The connecting groove 131 is fixedly connected to a heater 132 for heating the airflow, and an extrusion block 133 is installed inside the connecting groove 131. The extrusion block 133 is connected to the inside of the connecting groove 131 through a sleeve spring 134, and a steel ball 135 is installed inside the extrusion block 133; a pull rope 136 is used to connect the guide column 137 and the extrusion block 133. The guide column 137 is connected to the clamping block 133 through a built-in spring 138. The interior of 1310 is interconnected, and the interior of the clamping block 1310 is fixedly connected to the positioning frame 139; the guide pipe 1311 is used to connect the connecting groove 131 and the clamping block 1310, and an air intake pipe 1312 is installed below the connecting groove 131, and a one-way valve 1313 is installed on the air intake pipe 1312 and the guide pipe 1311. The clamping block 1310 is interconnected with the air outlet plate 1315 through the air injection hose 1314; the stretching air bag 1316 is located between the air outlet plate 1315 and the upper end of the bending block 9 The air outlet plate 1315 is bonded to the stretching airbag 1316, which is connected to the main airbag 1318 via a connecting tube 1317. The main airbag 1318 is located on the side of the guide post 137. A leak port 1319 is provided on the guide post 137. A rubber sleeve 1320 is provided above the guide post 137. A magnetic block 1321 is mounted on the upper end of the rubber sleeve 1320 and inside the clamping block 1310. A cooler 1322 is fixedly connected to the inner middle portion of the clamping block 1310. The steel ball 135 can roll inside the extrusion block 133, and the extrusion block 133 and the connecting groove 131 are seamlessly connected. The left and right ends of the guide post 137 are heat insulation plates. The guide post 137 forms an elastic and retractable structure with the built-in spring 138 and the clamping block 1310. The heat insulation plates on the left and right ends of the guide post 137 fit closely to the inner wall of the positioning frame 139. The lower end of the air outlet plate 1315 is rotatable on the bending block 9. The interior of the air outlet plate 1315 is configured as a hollow structure, with air jets evenly distributed along the sides of the air outlet plate 1315. In the initial state, the main airbag 1318 is squeezed by the right end of the guide post 137. Both the main airbag 1318 and the stretching airbag 1316 are made of elastic rubber.The magnetic block 1321 on the upper end of the rubber sleeve 1320 and the magnetic block 1321 on the inner top of the clamping block 1310 have opposite magnetic properties, and the magnetic blocks 1321 are evenly distributed at equal intervals on the inner top of the clamping block 1310 .

[0055] The working principle of this embodiment is as follows: when the bending block 9 rotates upward around the movable shaft 8 to bend the product, the heater 132 inside the connecting groove 131 is turned on, thereby heating the air inside the connecting groove 131. After the bending block 9 rotates and tilts, the steel ball 135 inside the squeezing block 133 rolls downward. At this time, after the squeezing block 133 moves inside the connecting groove 131, the pull rope 136 can be used to pull the guide column 137 to move to the right inside the clamping block 1310. After the guide column 137 moves, the squeezing of the main airbag 1318 can be released. The main airbag 1318 recovers after the pressure stops. At this time, the airflow inside the stretching airbag 1316 flows back to the inside of the main airbag 1318 through the connecting pipe 1317, and the stretching airbag 131 6 shrinks after losing gas, and the shrinkage of the stretching airbag 1316 can pull the air outlet plate 1315 to rotate, so that the air jet on the air outlet plate 1315 is directed toward the bent product. After the extrusion block 133 moves inside the connecting groove 131, the hot air flow inside the connecting groove 131 can be squeezed out to the inside of the clamping block 1310 through the guide tube 1311. The air flow inside the clamping block 1310 is injected into the air outlet plate 1315 through the air injection hose 1314, and the hot air is ejected toward the bent product through the air jet on the side of the air outlet plate 1315, thereby heating the bent product. After the product is bent, the bending cylinder 10 shrinks, and the bending block 9 recovers. Then the refrigerator 1322 is turned on, the heater 132 is turned off, and the refrigerator 1322 is used to heat the product. The air inside the guide column 137 is cooled, and after the bending block 9 is reset, the internal squeezing block 133 is also reset under the action of the sleeve spring 134. After the squeezing block 133 is reset and moves to the right, it can use the suction pipe 1312 to suck the outside air back into the interior of the connecting groove 131, and the one-way valve 1313 on the guide pipe 1311 and the suction pipe 1312 can make the air flow inside the pipe only unidirectional. At the same time, after the squeezing block 133 is reset, the guide column 137 connected to it by the pull rope 136 is also reset under the action of the built-in spring 138. After the guide column 137 is reset, when the magnetic block 1321 on the rubber sleeve 1320 and the magnetic block 1321 inside the clamping block 1310 approach each other, the magnetic block inside the clamping block 1310 The block 1321 generates a magnetic attraction force on the magnetic block 1321 on the rubber sleeve 1320, causing the rubber sleeve 1320 to expand. When the magnetic block 1321 on the rubber sleeve 1320 and the magnetic block 1321 inside the clamping block 1310 move away from each other, the rubber sleeve 1320 contracts and resets. Through the expansion and contraction of the rubber sleeve 1320, the airflow cooled by the refrigerator 1322 inside the guide column 137 can be injected into the interior of the air outlet plate 1315 through the air injection hose 1314, and the cold air is ejected toward the bent product through the air jet on the side of the air outlet plate 1315. During the resetting process of the guide column 137, the main air bag 1318 can be gradually squeezed again, and the airflow inside the main air bag 1318 enters the interior of the stretching air bag 1316 through the connecting pipe 1317.The expansion caused by the injection of air into the stretching airbag 1316 can push the air outlet plate 1315 to reset and rotate. By adjusting the rotation of the air outlet plate 1315, the air jets on its side can be aligned with the bent product to cool it down. It should be noted that the connecting pipe 1317 in this application can be a deformable hose.

[0056] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary bending mechanism, comprising a chassis (1), wherein a press cylinder (2) is fixedly connected to the left side of the upper end of the chassis (1), and a push block (3) is fixedly connected to the telescopic end of the press cylinder (2), and a pin shaft at the upper end of the push block (3) can slide on the left end of a press lever (4), and the middle part of the press lever (4) is mounted on a support frame (5) through a pin shaft; It is characterized in that Also includes: A pressing block (6) is mounted below the right end of the pressing lever (4), wherein the pressing block (6) is mounted on a guide seat (7), and the guide seat (7) is fixed to the upper end of the chassis (1); A movable shaft (8) is arranged on the right side of the lower end of the pressing block (6); a bending block (9) is connected to the movable shaft (8); a central rotating shaft (12) is installed at the lower end of the bending block (9); the central rotating shaft (12) is installed at the upper end of the positioning block (11); and a bending cylinder (10) is installed at the lower end of the positioning block (11); The heating and cooling structure (13) is installed on the bending block (9). The heating and cooling structure (13) is used to assist in heating the bent product during bending to reduce the product's own stress. At the same time, it is used to cool the bent product after bending to prevent the temperature of the bent product from being too high and affecting normal handling. The heating and cooling structure (13) is composed of a connecting groove (131), a heater (132), an extrusion block (133), a sleeve spring (134), a steel ball (135), a pull rope (13 6), a guide column (137), a built-in spring (138), a positioning frame (139), a clamping block (1310), a guide tube (1311), an air intake pipe (1312), a one-way valve (1313), an air injection hose (1314), an air outlet plate (1315), a stretching air bag (1316), a connecting pipe (1317), a main air bag (1318), a leakage port (1319), a rubber sleeve (1320), a magnetic block (1321) and a refrigerator (1322); A connecting groove (131) is provided inside the side of the bending block (9), a heater (132) for heating the airflow is fixedly connected to the inside of the connecting groove (131), and an extrusion block (133) is installed inside the connecting groove (131), the extrusion block (133) is connected to the inside of the connecting groove (131) via a sleeve spring (134), and a steel ball (135) is installed inside the extrusion block (133); A pull rope (136) is used to connect the guide column (137) and the extrusion block (133), wherein the guide column (137) is connected to the interior of the clamping block (1310) via a built-in spring (138), and a positioning frame (139) is fixedly connected to the interior of the clamping block (1310); A flow guide pipe (1311) is used to connect the connecting groove (131) and the clamping block (1310); an air intake pipe (1312) is installed below the connecting groove (131), and a one-way valve (1313) is installed on both the air intake pipe (1312) and the flow guide pipe (1311); and the clamping block (1310) is connected to each other via an air injection hose (1314) and an air outlet plate (1315); The stretching airbag (1316) is located between the air outlet plate (1315) and the upper end of the bending block (9), and the air outlet plate (1315) and the stretching airbag (1316) are bonded and connected. The stretching airbag (1316) is connected to the main airbag (1318) through the connecting pipe (1317), and the main airbag (1318) is located on the side of the guide column (137); The leakage port (1319) is provided on the guide column (137), a rubber sleeve (1320) is provided above the guide column (137), and a magnetic block (1321) is installed at the upper end of the rubber sleeve (1320) and inside the clamping block (1310), and a cooler (1322) is fixedly connected to the inner middle part of the clamping block (1310).

2. The rotary bending mechanism according to claim 1, characterized in that: The upper end pin of the pressing block (6) and the right end of the pressing lever (4) are slidably connected, and the pressing block (6) can slide vertically on the support frame (5).

3. The rotary bending mechanism according to claim 1, characterized in that: The central rotating shaft (12) at the upper end of the positioning block (11) can move in the groove below the bending block (9), and the left end of the bending block (9) can rotate around the movable shaft (8).

4. The rotary bending mechanism according to claim 1, characterized in that: The steel ball (135) can roll inside the extrusion block (133), and the extrusion block (133) and the connecting groove (131) are seamlessly slidably connected.

5. The rotary bending mechanism according to claim 1, characterized in that: The left and right ends of the guide column (137) are heat insulation plates, and the guide column (137) forms an elastic telescopic structure through a built-in spring (138) and a clamping block (1310), and the heat insulation plates at the left and right ends of the guide column (137) fit with the inner wall of the positioning frame (139).

6. The rotary bending mechanism according to claim 1, characterized in that: The lower end of the air outlet plate (1315) is capable of rotating on the bending block (9), and the interior of the air outlet plate (1315) is configured as a hollow structure, with air jets evenly distributed on the sides of the air outlet plate (1315).

7. The rotary bending mechanism according to claim 1, characterized in that: The main airbag (1318) is squeezed by the right end of the guide column (137) in an initial state, and both the main airbag (1318) and the stretching airbag (1316) are made of elastic rubber.

8. The rotary bending mechanism according to claim 1, characterized in that: The magnetic block (1321) at the upper end of the rubber sleeve (1320) and the magnetic block (1321) at the top end of the internal clamping block (1310) have opposite magnetic properties, and the magnetic blocks (1321) are evenly distributed at equal intervals at the top end of the internal clamping block (1310).

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