Automatic pipe bending machine with positioning function

Abstract

The invention relates to an automatic pipe bending machine with a positioning function, and relates to the technical field of heat dissipation pipe machining, the automatic pipe bending machine comprises a base, and the base is provided with a fixing mechanism used for fixing a heat dissipation pipe; a center column is further vertically arranged on the base, a shaping wheel is coaxially and fixedly arranged on the center column, and a first groove matched with the outer wall of a heat dissipation pipe is formed in the circumferential wall of the shaping wheel. A deflection table is rotationally arranged on the center column, a pushing block is arranged on the deflection table, a sliding groove is formed in the side wall, close to one side of the shaping wheel, of the pushing block in the tangential direction of the shaping wheel, and a pressing block is arranged in the sliding groove in a sliding mode; a second groove matched with the outer wall of the heat dissipation pipe is formed in the side wall of the side, close to the shaping wheel, of the pressing block, and the heat dissipation pipe is clamped by the first groove and the second groove jointly. The heat dissipation pipe bending device has the effects that the situation that the outer wall of the heat dissipation pipe is wrinkled due to friction in the bending process is reduced, and the product quality is improved.

Description

Technical Field

[0001] This application relates to the technical field of heat dissipation pipe processing, and particularly to an automatic pipe bender with a positioning function. Background Art

[0002] Integrated circuits are widely used in computer components. When integrated circuits work, they generate high temperatures. As is well known, high temperatures can not only cause the system to run unstable, shorten the system's lifespan, but also may burn some components. The role of the radiator is to absorb the heat generated by the integrated circuit and then dissipate it outside the chassis to ensure the normal temperature of computer components. Most radiators absorb heat by contacting the surface of the heat-generating components, and then transfer the heat to a distance through heat dissipation pipes, and then blow the hot air inside the chassis outside the chassis to complete the heat dissipation of the computer. In the processing of heat dissipation pipes, pipe bending is also an important process.

[0003] In the related art, there is a common pipe bender, which includes a base. A fixing mechanism for fixing the heat dissipation pipe is provided on the base; a central column is also vertically arranged on the base, and a shaping wheel is coaxially and fixedly arranged on the central column. A first groove adapted to the outer wall of the heat dissipation pipe is formed on the peripheral wall of the shaping wheel; a deflection table is rotatably arranged on the central column, and a pressing block is arranged on the deflection table. A second groove adapted to the outer wall of the heat dissipation pipe is formed on the side wall of the pressing block close to the shaping wheel; when processing the heat dissipation pipe, the fixing mechanism fixes one end of the heat dissipation pipe, the first groove and the second groove jointly clamp the middle part of the heat dissipation pipe, and then, the deflection table is driven to deflect in a direction away from the fixing mechanism, and the deflection table drives the pressing block to rotate around the shaping wheel, thereby forcing the heat dissipation pipe to bend and form around the shaping wheel.

[0004] In the process of implementing this application, it is found that at least the following problems exist in this technology: during the bending process of the heat dissipation pipe, the relative position between the pressing block and the deflection table cannot change, and there will inevitably be sliding friction between the second groove and the heat dissipation pipe. Under the influence of the sliding friction, the outer wall of the heat dissipation pipe may wrinkle, affecting the product quality. Summary of the Invention

[0005] In order to reduce the situation of the outer wall of the heat dissipation pipe wrinkling due to friction during the bending process and improve the product quality, this application provides an automatic pipe bender with a positioning function.

[0006] An automatic pipe bender with a positioning function provided by this application adopts the following technical solutions: An automatic pipe bender with a positioning function, comprising a base, on which a fixing mechanism for fixing a heat dissipation pipe is provided; a central column is vertically arranged on the base, and a shaping wheel is coaxially and fixedly arranged on the central column. A first groove adapted to the outer wall of the heat dissipation pipe is formed on the circumferential wall of the shaping wheel; a deflection table is rotatably arranged on the central column, a pushing block is arranged on the deflection table, and a sliding groove is formed on the side wall of the pushing block close to the shaping wheel along the tangential direction of the shaping wheel. A pressing block is slidably arranged in the sliding groove, and a second groove adapted to the outer wall of the heat dissipation pipe is formed on the side wall of the pressing block close to the shaping wheel. The first groove and the second groove jointly clamp the heat dissipation pipe.

[0007] By adopting the above technical solution, when bending the heat dissipation pipe, the deflection table drives the pushing block to rotate around the shaping wheel, forcing the heat dissipation pipe to bend and form around the shaping wheel. During this process, the pressing block slides in the sliding groove. Since the deflection table rotates around the central column, the sliding groove can ensure that it is always tangent to the shaping wheel. Thus, the relative movement between the second groove and the heat dissipation pipe is eliminated by the relative sliding of the sliding groove and the pressing block, reducing the sliding friction on the outer wall of the heat dissipation pipe and minimizing the situation of the outer wall of the heat dissipation pipe wrinkling due to friction, thereby improving the product quality.

[0008] Preferably, the end of the sliding groove penetrates through the side wall of the pushing block close to the fixing mechanism, and the end of the pressing block extends out from the end of the sliding groove close to the fixing mechanism. A first fixing block is fixedly arranged at the end of the pressing block extending out of the sliding groove, a second fixing block is fixedly arranged on the pushing block, a return spring is arranged between the first fixing block and the second fixing block, one end of the return spring is fixedly connected to the first fixing block, the other end of the return spring is fixedly connected to the second fixing block, and the return spring drives the first fixing block to approach the second fixing block.

[0009] By adopting the above technical solution, when the pipe bending action starts, the deflection table drives the pushing block to rotate in a direction away from the fixing mechanism, and the heat dissipation pipe fixed by the fixing mechanism generates a traction force on the pressing block; the pressing block overcomes the elastic force of the return spring and slides along the direction extending out of the sliding groove; once the pipe bending action is completed, the pressing block releases the heat dissipation pipe, and under the elastic force of the return spring, the first fixing block approaches the second fixing block, and the pressing block quickly resets to the initial position to prepare for the next pipe bending operation.

[0010] Preferably, the fixing mechanism includes a base column, clamping jaws, a rotating ring, protrusions, and a torsion assembly. The base column is fixedly connected to the base. A through hole for the heat dissipation tube to extend into is provided at the axis of the base column. A plurality of clamping jaws are symmetrically arranged and hinged to one end of the base column close to the shaping wheel. One end of the rotating ring is sleeved on the base column and is rotatably connected to the base column. A plurality of protrusions are symmetrically and fixedly arranged on the inner wall of the other end of the rotating ring. The protrusions correspond to the clamping jaws one by one. The protrusions abut against the side of the clamping jaws away from the axis of the through hole. All the clamping jaws jointly clamp the heat dissipation tube. The torsion assembly is used to drive the rotating ring to rotate.

[0011] By adopting the above technical solution, the through hole provided in the base column for the heat dissipation tube to extend into plays a preliminary positioning and guiding role for the heat dissipation tube, enabling the heat dissipation tube to accurately enter the processing position of the pipe bender (i.e., between the first groove and the second groove); when it is necessary to fix the heat dissipation tube, the torsion assembly is used to drive the rotating ring to rotate. During the rotation of the rotating ring, the protrusions will push the clamping jaws to rotate around the hinge point of the clamping jaws, and all the clamping jaws will simultaneously approach the heat dissipation tube until they jointly clamp the heat dissipation tube; in this way, the heat dissipation tube is stably clamped, ensuring that the heat dissipation tube will not be displaced during the pipe bending operation, and guaranteeing the accuracy of the pipe bending process; conversely, when it is necessary to release the heat dissipation tube, the rotating ring is driven to rotate in the reverse direction, the protrusions are disengaged from the clamping jaws and no longer abut against the clamping jaws, the clamping jaws are released, and then the heat dissipation tube is released.

[0012] Preferably, a spreading torsion spring is arranged at the rotating connection between the clamping jaw and the base column. One end of the spreading torsion spring is fixedly connected to the clamping jaw, and the other end of the spreading torsion spring is fixedly connected to the base column. The spreading torsion spring drives the clamping jaw to deflect towards the direction close to the inner wall of the rotating ring.

[0013] By adopting the above technical solution, when the torsion assembly drives the rotating ring to rotate, causing the protrusions to push the clamping jaws to rotate around the hinge point of the clamping jaws and jointly clamp the heat dissipation tube, the spreading torsion spring will undergo elastic deformation and accumulate elastic potential energy; after the pipe bending process is completed, the torsion assembly needs to drive the rotating ring to rotate in the reverse direction, the protrusions are disengaged from the clamping jaws, and the clamping jaws lose restraint. At this time, the elastic potential energy of the spreading torsion spring is released, and it drives the clamping jaws to deflect towards the direction close to the inner wall of the rotating ring, enabling the clamping jaws to maintain a certain opening angle in the non-clamping state of the heat dissipation tube, which provides convenience for the placement of a new heat dissipation tube.

[0014] Preferably, the torsion assembly includes a first gear, a first rack, a movable block, a second rack, a second gear, a ratchet wheel, a movable pawl, a fixed bracket, a locking pawl, and a pressing torsion spring. The ratchet wheel is fixedly arranged on the outer wall of the rotating ring. The first gear is coaxially and fixedly connected with the deflection table. The movable block is slidably arranged on the base. The first rack is fixed on the side wall of the movable block. The first rack meshes with the first gear. The second rack is fixed on the top of the movable block. The second gear is sleeved and rotatable on the base column. The second rack meshes with the second gear. The movable pawl is rotatably arranged on the end face of the second gear. The fixed bracket is fixedly connected with the base. The locking pawl is rotatable on the fixed bracket. One pressing torsion spring is arranged between the locking pawl and the fixed bracket, and the other is arranged between the movable pawl and the second gear. The pressing torsion springs drive the locking pawl and the movable pawl to abut against the ratchet wheel. The locking pawl is used to prevent the ratchet wheel from rotating when the deflection table deflects away from the base column. The movable pawl is used to drive the ratchet wheel to rotate when the deflection table deflects towards the base column.

[0015] By adopting the above technical solution, when the deflection table deflects away from the base column, the heat dissipation pipe is bent on the shaping wheel. At this time, the first gear rotates synchronously with the deflection table and drives the movable block to move. During the movement of the movable block, the second rack drives the second gear to rotate. However, at this time, the locking pawl abuts against the ratchet wheel, preventing the ratchet wheel from rotating, so that the rotating ring remains stationary and the clamping jaws keep clamping the heat dissipation pipe, ensuring the smooth progress of the pipe bending operation. When the deflection table deflects towards the base column, that is, when the heat dissipation pipe is processed and the deflection table returns to its original position, the first gear rotates in the reverse direction, driving the first rack and the movable block to move in the reverse direction. The second rack drives the second gear to rotate in the reverse direction. At this time, the movable pawl drives the ratchet wheel to rotate, and the ratchet wheel drives the rotating ring to rotate, so that the protrusion on the rotating ring disengages from the clamping jaws, and the clamping jaws can open to release the heat dissipation pipe. In this way, the processing rotation and reset rotation of the deflection table are combined with the clamping and releasing actions of the fixing mechanism on the heat dissipation pipe, realizing the automatic clamping and releasing of the heat dissipation pipe.

[0016] Preferably, a clamping torsion spring is arranged between the rotating ring and the base column. One end of the clamping torsion spring is fixedly connected with the base column, and the other end is fixedly connected with the rotating ring. When the protrusion abuts against the clamping jaws, the clamping torsion spring is in a relaxed state.

[0017] By adopting the above technical solution, when the movable pawl drives the ratchet wheel to drive the rotating ring to rotate, so that the protrusion disengages from the clamping jaws and the clamping jaws open to release the heat dissipation pipe, the clamping torsion spring undergoes elastic deformation and stores elastic potential energy. When it is necessary to fix a new heat dissipation pipe again, just toggle the locking pawl and the movable pawl. The locking pawl and the movable pawl simultaneously release the ratchet wheel. The ratchet wheel loses its restraint, and the elastic potential energy of the clamping torsion spring causes the rotating ring to reverse and return to its original position, so that the protrusion and the clamping jaws abut against each other again, facilitating the control of the clamping jaws to clamp the heat dissipation pipe again.

[0018] Preferably, unlocking levers are fixedly arranged on both the movable pawl and the locking pawl. A sliding ring is slidably arranged on the outer wall of the base column along the axial direction of the base column. Two push rods are fixedly arranged on the sliding ring. The push rods correspond to the levers one by one. A guiding curved surface is formed at one end of the push rod close to the unlocking lever. The guiding curved surface can abut against the unlocking lever and push the unlocking lever to move.

[0019] By adopting the above technical solution, when it is necessary to simultaneously toggle the locking pawl and the movable pawl, the sliding ring can be moved along the axial direction of the base column. When the sliding ring moves, the guiding curved surface will abut against the unlocking lever and push the unlocking lever. The movable pawl and the locking pawl will rotate simultaneously and disengage from the ratchet wheel. At this time, the elastic potential energy of the clamping torsion spring causes the rotating ring to perform reverse torsion reset, so that the protrusion and the clamping jaw abut against each other again, which further facilitates controlling the clamping jaw to clamp the heat dissipation pipe again.

[0020] Preferably, a guiding groove is formed on the outer wall of the base column along the axial direction of the base column. A guiding block is fixed on the inner wall of the sliding ring. The guiding block slides in the guiding groove. A plurality of tension springs are arranged in the guiding groove. One end of the tension spring is fixedly connected with the end wall of the guiding groove, and the other end of the tension spring is fixedly connected with the guiding block. The tension spring drives the sliding ring away from the unlocking lever.

[0021] By adopting the above technical solution, the cooperation between the guiding block and the guiding groove provides guidance for the sliding of the sliding ring along the axial direction of the base column, ensuring the relative positions of the push rod and the lever. When no external force acts on the sliding ring, the sliding ring automatically moves away from the lever under the elastic force of the tension spring and returns to the initial position, so that the push rod and the lever are disengaged, and the movable pawl and the locking pawl re-abut against the ratchet wheel.

[0022] Preferably, a pre-feeding table is fixedly arranged on the base. A pre-feeding groove for placing the heat dissipation pipe is formed at the top of the pre-feeding table. The pre-feeding table is located on one side of the base column away from the shaping wheel. The pre-feeding groove and the through hole are on the same straight line. A second air cylinder is fixedly arranged on the base. The output end of the second air cylinder can extend into the pre-feeding groove and abut against the heat dissipation pipe in the pre-feeding groove.

[0023] By adopting the above technical solution, the pre-feeding table provides a pre-placement position for the heat dissipation pipe, facilitating placing the heat dissipation pipe in the pre-feeding groove. When it is necessary to send a new heat dissipation pipe into the base column for fixation, the output end of the second air cylinder extends into the pre-feeding groove and abuts against the new heat dissipation pipe in the pre-feeding groove, and then pushes the new heat dissipation pipe to move along the straight line direction of the pre-feeding groove and the through hole until the new heat dissipation pipe enters the fixation position in the base column. At this time, the new heat dissipation pipe ejects the heat dissipation pipe that has been processed in the base column.

[0024] Preferably, a push frame is fixedly arranged on the output end of the second cylinder, and the push frame can abut against the sliding ring.

[0025] By adopting the above technical solution, when the second cylinder pushes the heat dissipation pipe towards the base column, the push frame contacts the sliding ring and pushes the sliding ring to move along the axis direction of the base column, realizing the automatic pushing operation of the sliding ring. That is, during feeding, the push frame pushes the sliding ring to move, so that the guiding curved surface on the push rod abuts against the unlocking lever, further causing the movable pawl and the locking pawl to rotate and disengage from the ratchet wheel, enabling the elastic potential energy accumulated by the clamping torsion spring to be released, making the rotating ring twist and reset, and the clamping jaws to be in the clamping state again, automatically clamping the newly entered heat dissipation pipe.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By arranging the central column, shaping wheel, first groove, deflection table, push block, sliding groove, pressing block, second groove, first fixing block, second fixing block, and reset spring, during the pipe bending process, the pressing block can slide in the sliding groove, minimizing the sliding friction between the second groove and the heat dissipation pipe, and avoiding wrinkling on the outer wall of the heat dissipation pipe as much as possible, improving the product quality; 2. By arranging the base column, through hole, clamping jaws, rotating ring, protrusion, first gear, first rack, movable block, second rack, second gear, ratchet wheel, movable pawl, fixing frame, locking pawl, and abutting torsion spring, during the pipe bending operation of the heat dissipation pipe, the clamping state of the heat dissipation pipe is maintained. When the pipe bending operation of the heat dissipation pipe is completed, during the reset process of the deflection table, the clamping jaws are automatically opened, automatically releasing the heat dissipation pipe; 3. By arranging the clamping torsion spring, unlocking lever, sliding ring, push rod, guiding curved surface, guiding groove, guiding block, tension spring, pre-feeding table, pre-feeding groove, second cylinder, and push frame, the pre-feeding table, second cylinder, and push frame realize the automatic feeding of the heat dissipation pipe, and automatically drive the clamping jaws to clamp the heat dissipation pipe after the feeding of the heat dissipation pipe is completed. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of an automatic pipe bender with a positioning function provided in an embodiment of the present application.

[0028] Figure 2 is Figure 1 an enlarged view of part A in

[0029] Figure 3 is Figure 1 an enlarged view of part B in

[0030] Figure 4 is a schematic sectional view of the fixing mechanism reflected in an embodiment of the present application.

[0031] Description of reference numerals: 1. Base; 11. Central column; 111. Shaping wheel; 112. First groove; 12. Deflection table; 121. First cylinder; 122. Pusher block; 1221. Slide groove; 1222. Second fixing block; 123. Pressing block; 1231. Second groove; 1232. First fixing block; 124. Return spring; 2. Fixing mechanism; 21. Base column; 211. Through hole; 212. Guide groove; 213. Tension spring; 22. Claw; 23. Rotating ring; 231. Projection; 24. Opening torsion spring; 3. Torsion assembly; 31. First gear; 32. Movable block; 321. First rack; 322. Second rack; 33. Second gear; 331. Movable pawl; 34. Ratchet; 35. Fixed frame; 351. Locking pawl; 36. Tightening torsion spring; 37. Clamping torsion spring; 38. Unlocking lever; 39. Sliding ring; 391. Push rod; 3911. Guide surface; 392. Guide block; 4. Pre-feeding table; 41. Pre-feeding groove; 42. Second cylinder; 421. Pushing frame; 43. Hopper; 5. Power motor; 51. Third gear; 6. Heat dissipation pipe. Detailed implementation manners

[0032] The following further describes the present application in detail in conjunction with the attached Figures 1-4 drawings.

[0033] An automatic pipe bender with a positioning function is disclosed in an embodiment of the present application. Refer to Figure 1 and Figure 2 , which includes a base 1, and a fixing mechanism 2 for fixing the heat dissipation pipe 6 is provided on the base 1. A central column 11 is vertically and fixedly arranged on the base 1, and a shaping wheel 111 is coaxially and fixedly arranged on the central column 11. A first groove 112 adapted to the outer wall of the heat dissipation pipe 6 is formed on the peripheral wall of the shaping wheel 111.

[0034] Refer to Figure 2 , a deflection table 12 is rotatably arranged on the central column 11, a pusher block 122 is arranged on the deflection table 12, and the pusher block 122 slides on the deflection table 12 in a direction close to or away from the shaping wheel 111. Specifically, a first cylinder 121 is fixedly arranged on the deflection table 12, and the output end of the first cylinder 121 is fixedly connected to the pusher block 122 to drive the pusher block 122 to approach or move away from the shaping wheel 111. A slide groove 1221 is formed on the side wall of the pusher block 122 on the side close to the shaping wheel 111 along the tangent direction of the shaping wheel 111. A pressing block 123 is slidably arranged in the slide groove 1221. A second groove 1231 adapted to the outer wall of the heat dissipation pipe 6 is formed on the side wall of the pressing block 123 on the side close to the shaping wheel 111, and the first groove 112 and the second groove 1231 jointly clamp the heat dissipation pipe 6.

[0035] Refer to Figure 2Specifically, the end of the slide slot 1221 passes through a side wall of the push block 122 near the fixing mechanism 2, the end of the pressure block 123 extends from the slide slot 1221 near the fixing mechanism 2, the first fixing block 1232 is fixedly provided at the end of the pressure block 123 extending out of the slide slot 1221, and the second fixing block 1222 is fixedly provided on the push block 122. A return spring 124 is provided between the first fixing block 1232 and the second fixing block 1222, one end of the return spring 124 is fixedly connected to the first fixing block 1232, and the other end of the return spring 124 is fixedly connected to the second fixing block 1222, and the return spring 124 drives the first fixing block 1232 to approach the second fixing block 1222. In addition, a power motor 5 for driving the deflection platform 12 to deflect around the central column 11 is also provided on the base 1.

[0036] Reference Figure 1 and Figure 2 When the heat pipe 6 is bent, the fixing mechanism 2 fixes one end of the heat pipe 6, and the side wall of the heat pipe 6 fits the first groove 112. Then, the first cylinder 121 drives the push block 122 and the pressure block 123 to approach the shaping wheel 111, so that the second groove 1231 fits the heat pipe 6. At this time, the first groove 112 and the second groove 1231 clamp the heat pipe 6 together. Then, the power motor 5 drives the deflection table 12 to deflect in the direction away from the fixing mechanism 2. At this time, the push block 122 rotates around the shaping wheel 111, forcing the heat pipe 6 to be bent around the shaping wheel 111. However, in this process, the pressure block 123 slides in the slide groove 1221, and the relative movement between the second groove 1231 and the heat pipe 6 is eliminated by the relative sliding of the slide groove 1221 and the pressure block 123, which reduces the sliding friction on the outer wall of the heat pipe 6 and avoids the wrinkling of the outer wall of the heat pipe 6 due to friction as much as possible, thereby improving the product quality. After the bending process of the heat pipe 6 is completed, the cylinder drives the push block 122 away from the shaping wheel 111 to loosen the formed heat pipe 6. The reset spring 124 drives the first fixed block 1232 to approach the second fixed block 1222 to reset the pressing block 123. At the same time, the power motor 5 drives the deflection table 12 to deflect in the direction close to the fixing mechanism 2, and the deflection table 12 is reset to wait for the next bending process.

[0037] In order to facilitate fixing one end of the heat pipe 6, refer to Figures 1 to 4 The fixing mechanism 2 includes a base column 21, a clamping jaw 22, a rotating ring 23, a protrusion 231, and a torsion assembly 3. The base column 21 is fixedly connected to the base 1. Specifically, a support frame is fixedly arranged on the base 1, and the base column 21 is fixed on the support frame. The axis of the base column 21 passes through between the first groove 112 and the second groove 1231. A through hole 211 is opened at the axis of the base column 21 for the heat dissipation pipe 6 to extend into. The clamping jaw 22 is hinged at one end of the base column 21 close to the shaping wheel 111 and is symmetrically arranged. In this embodiment, there are three clamping jaws 22 symmetrically distributed in the circumferential direction of the base column 21.

[0038] Referring to Figure 4 , one end of the rotating ring 23 is sleeved on the base column 21 and is rotatably connected to the base column 21. A plurality of protrusions 231 are symmetrically and integrally formed on the inner wall of the other end of the rotating ring 23. In this embodiment, three protrusions 231 are symmetrically distributed in the circumferential direction of the inner wall of the rotating ring 23. The protrusions 231 correspond to the clamping jaws 22 one by one, and the protrusions 231 abut against the side of the clamping jaws 22 away from the axis of the through hole 211. All the clamping jaws 22 jointly clamp the heat dissipation tube 6, and the torsion assembly 3 is used to drive the rotating ring 23 to rotate. In addition, a spreading torsion spring 24 is arranged at the rotating connection of the clamping jaw 22 and the base column 21. One end of the spreading torsion spring 24 is fixedly connected to the clamping jaw 22, and the other end of the spreading torsion spring 24 is fixedly connected to the base column 21. The spreading torsion spring 24 drives the clamping jaw 22 to deflect towards the direction close to the inner wall of the rotating ring 23.

[0039] Referring to Figure 3 With Figure 4 , the through hole 211 plays a preliminary positioning and guiding role for the heat dissipation tube 6, so that the heat dissipation tube 6 can enter between the first groove 112 and the second groove 1231. When it is necessary to fix the heat dissipation tube 6, the rotating ring 23 is driven to rotate, and the protrusion 231 will push the clamping jaw 22 to rotate around the hinge point of the clamping jaw 22, so that all the clamping jaws 22 will approach the heat dissipation tube 6 at the same time until the heat dissipation tube 6 is jointly clamped. On the contrary, when it is necessary to loosen the heat dissipation tube 6, the rotating ring 23 is driven to rotate in the reverse direction, the protrusion 231 is separated from the clamping jaw 22 and no longer abuts against the clamping jaw 22, and the spreading torsion spring 24 drives the clamping jaws 22 to move away from each other, thereby loosening the heat dissipation tube 6.

[0040] In order to facilitate the control of the rotation of the rotating ring 23, referring to Figures 1 to 4 , the torsion assembly 3 includes a first gear 31, a first rack 321, a movable block 32, a second rack 322, a second gear 33, a ratchet 34, a movable pawl 331, a fixing frame 35, a locking pawl 351, and a pressing torsion spring 36. The ratchet 34 is fixedly arranged on the outer wall of the rotating ring 23.

[0041] Referring to Figure 1 With Figure 4 , the first gear 31 is coaxially and fixedly connected to the deflection table 12. The movable block 32 is slidably arranged on the base 1. The first rack 321 is fixed on the side wall of the movable block 32, and the first rack 321 meshes with the first gear 31. The second rack 322 is fixed on the top of the movable block 32. The second gear 33 is sleeved and rotates on the base column 21, and the second rack 322 meshes with the second gear 33. When the deflection table 12 performs a deflection movement, the first gear 31 rotates synchronously with the deflection table 12 and drives the movable block 32 to move. During the movement of the movable block 32, the second rack 322 drives the second gear 33 to rotate. In this way, the rotation of the deflection table 12 is converted into the rotation of the second gear 33.

[0042] Referring to Figure 1 , in addition, a third gear 51 is fixedly arranged at the output end of the power motor 5. The third gear 51 meshes with the first gear 31. The power motor 5 is a servo motor, thereby driving the deflection table 12 to rotate.

[0043] Referring to Figure 3 , the movable pawl 331 is rotatably arranged on the end face of the second gear 33. The fixing frame 35 is fixedly connected to the base 1. The locking pawl 351 rotates on the fixing frame 35. A pressing torsion spring 36 is arranged between the locking pawl 351 and the fixing frame 35 and between the movable pawl 331 and the second gear 33 respectively. The pressing torsion spring 36 drives the locking pawl 351 and the movable pawl 331 to abut against the ratchet wheel 34. The locking pawl 351 is used to prevent the ratchet wheel 34 from rotating when the deflection table 12 deflects away from the base column 21. The movable pawl 331 is used to push the ratchet wheel 34 to rotate when the deflection table 12 deflects towards the base column 21.

[0044] Referring to Figure 3 , when the deflection table 12 deflects away from the base column 21, the heat dissipation pipe 6 is bent on the shaping wheel 111. The second gear 33 rotates, and the movable pawl 331 moves along with the second gear 33 in a direction that does not push the ratchet wheel 34 to rotate. The locking pawl 351 on the fixing frame 35 abuts against the ratchet wheel 34, preventing the ratchet wheel 34 from rotating, so that the rotating ring 23 remains stationary and the clamping jaw 22 keeps clamping the heat dissipation pipe 6. When the processing of the heat dissipation pipe 6 is completed and the deflection table 12 deflects and resets towards the base column 21, the second gear 33 rotates reversely to reset, and the movable pawl 331 after moving along with the second gear 33 moves reversely to reset. At this time, the movable pawl 331 can push the ratchet wheel 34 to rotate, and the locking pawl 351 no longer prohibits the ratchet wheel 34 from rotating, and the rotating ring 23 twists, thereby loosening the clamping jaw 22.

[0045] Referring to Figure 4 , a clamping torsion spring 37 is arranged between the rotating ring 23 and the base column 21. One end of the clamping torsion spring 37 is fixedly connected to the base column 21, and the other end of the clamping torsion spring 37 is fixedly connected to the rotating ring 23. When the protrusion 231 abuts against the clamping jaw 22, the clamping torsion spring 37 is in a relaxed state.

[0046] Referring to Figure 3 And Figure 4, unlocking levers 38 are fixedly arranged on both the movable pawl 331 and the locking pawl 351. A sliding ring 39 is slidably arranged on the outer wall of the base column 21 along the axial direction of the base column 21. Two push rods 391 are fixedly arranged on the sliding ring 39, and the push rods 391 correspond to the levers one by one. A guiding surface 3911 is provided at one end of the push rod 391 close to the unlocking lever 38. The guiding surface 3911 can abut against the unlocking lever 38 and push the unlocking lever 38 to move. Specifically, the guiding surface 3911 can adopt a spherical surface or a conical surface. A guiding groove 212 is formed on the outer wall of the base column 21 along the axial direction of the base column 21. A guiding block 392 is fixed on the inner wall of the sliding ring 39. The guiding block 392 slides in the guiding groove 212. A plurality of tension springs 213 are arranged in the guiding groove 212. One end of the tension spring 213 is fixedly connected to the end wall of the guiding groove 212, and the other end of the tension spring 213 is fixedly connected to the guiding block 392. The tension spring 213 drives the sliding ring 39 to move away from the unlocking lever 38.

[0047] Referring to Figure 3 and Figure 4 , when it is necessary to drive the clamping jaw 22 to clamp the heat dissipation pipe 6 again, the sliding ring 39 is pushed close to the unlocking lever 38. The guiding surface 3911 will abut against the unlocking lever 38 and push the unlocking lever 38. The movable pawl 331 and the locking pawl 351 will deflect simultaneously and disengage from the ratchet wheel 34. At this time, the deformed clamping torsion spring 37 urges the rotating ring 23 to reverse and reset, so that the protrusion 231 abuts against the clamping jaw 22 again, and the clamping jaw 22 clamps the heat dissipation pipe 6.

[0048] Referring to Figure 1 and Figure 4 , a pre-feeding table 4 and a feeding hopper 43 are fixedly arranged on the base 1. The pre-feeding table 4 is located on the side of the base column 21 away from the shaping wheel 111, and the feeding hopper 43 is located directly above the pre-feeding table 4. A pre-feeding groove 41 for placing the heat dissipation pipe 6 is formed at the top of the pre-feeding table 4. The pre-feeding groove 41 and the through hole 211 are on the same straight line. When the heat dissipation pipe 6 is in the pre-feeding groove 41, the upper part of the heat dissipation pipe 6 exposes the pre-feeding groove 41. The bottom of the feeding hopper 43 is provided with a discharge port facing the pre-feeding groove 41. A large number of heat dissipation pipes 6 can be loaded in the feeding hopper 43. The heat dissipation pipe 6 in the pre-feeding groove 41 prevents the heat dissipation pipes 6 in the feeding hopper 43 from completely disengaging from the discharge port. When there is no heat dissipation pipe 6 in the pre-feeding groove 41, the heat dissipation pipes 6 in the feeding hopper 43 can completely disengage from the discharge port and fall into the pre-feeding groove 41.

[0049] Referring to Figure 1 and Figure 4, a second cylinder 42 is fixedly arranged on the base 1. The output end of the second cylinder 42 can extend into the pre-feeding groove 41 and abut against the heat dissipation pipe 6 in the pre-feeding groove 41. A pushing frame 421 is fixedly arranged on the output end of the second cylinder 42, and the pushing frame 421 can abut against the sliding ring 39. When a new heat dissipation pipe 6 needs to be sent into the base column 21 for fixing, the output end of the second cylinder 42 extends outwards, and pushes the new heat dissipation pipe 6 in the pre-feeding groove 41 into the fixing position in the through hole 211. The new heat dissipation pipe 6 ejects the heat dissipation pipe 6 that has been processed in the through hole 211. At the same time, the pushing frame 421 contacts the sliding ring 39 and pushes the sliding ring 39 to move, so that the guiding surface 3911 on the push rod 391 abuts against the unlocking lever 38, thereby causing the movable pawl 331 and the locking pawl 351 to deflect and release the ratchet wheel 34, so that the clamping torsion spring 37 drives the rotating ring 23 to twist and reset, and the clamping jaws 22 are in the clamping state again, automatically clamping the newly entered heat dissipation pipe 6.

[0050] The implementation principle of an automatic pipe bender with a positioning function in an embodiment of the present application is as follows: Before bending the heat dissipation pipe 6, a plurality of heat dissipation pipes 6 are first placed in the feeding hopper 43, and the heat dissipation pipes 6 can fall into the pre-feeding groove 41 at the top of the pre-feeding table 4 through the discharge port at the bottom of the feeding hopper 43. When the heat dissipation pipe 6 needs to be processed, the second cylinder 42 is started, and the second cylinder 42 pushes the heat dissipation pipe 6 in the pre-feeding groove 41 into the through hole 211 of the base column 21. At this time, the new heat dissipation pipe 6 ejects the heat dissipation pipe 6 that has been processed in the base column 21. At the same time, the pushing frame 421 pushes the sliding ring 39 to move, and the guiding surface 3911 at the end of the push rod 391 abuts against the unlocking lever 38, pushing the unlocking lever 38 to move, so that the movable pawl 331 and the locking pawl 351 rotate and release the ratchet wheel 34 at the same time. The clamping torsion spring 37 causes the rotating ring 23 to rotate, and the protrusion 231 on the inner wall of the rotating ring 23 abuts against the clamping jaws 22 again, and the clamping jaws 22 jointly clamp the heat dissipation pipe 6, completing the automatic positioning and fixing of the new heat dissipation pipe 6. After the heat dissipation pipe 6 is fixed, the first cylinder 121 is started, pushing the push block 122 and the pressing block 123 close to the shaping wheel 111, so that the second groove 1231 on the pressing block 123 fits the heat dissipation pipe 6, and the second groove 1231 and the first groove 112 on the shaping wheel 111 jointly clamp the heat dissipation pipe 6. Then, the power motor 5 drives the deflection table 12 to deflect away from the fixing mechanism 2, and the push block 122 rotates around the shaping wheel 111, forcing the heat dissipation pipe 6 to bend and form around the shaping wheel 111. During the bending process, the pressing block 123 slides in the chute 1221, eliminating the relative movement between the second groove 1231 and the heat dissipation pipe 6, reducing the sliding friction on the outer wall of the heat dissipation pipe 6, and preventing the outer wall of the heat dissipation pipe 6 from wrinkling due to friction.

[0051] During this process, the first gear 31 rotates synchronously with the deflection table 12, driving the first rack 321 and the movable block 32 to move. The second rack 322 on the top of the movable block 32 drives the second gear 33 to rotate. During this process, the locking pawl 351 on the fixed frame 35 abuts against the ratchet wheel 34, preventing the ratchet wheel 34 from rotating, so that the rotating ring 23 remains stationary, and the clamping jaws 22 stably clamp the heat dissipation pipe 6. When the bending process of the heat dissipation pipe 6 is completed, the power motor 5 drives the deflection table 12 to deflect and reset towards the fixed mechanism 2. At this time, the first gear 31 rotates in the reverse direction, driving the first rack 321 and the movable block 32 to move in the reverse direction. The second rack 322 drives the second gear 33 to rotate in the reverse direction. The movable pawl 331 moves and resets in the reverse direction with the second gear 33, and pushes the ratchet wheel 34 to rotate. The ratchet wheel 34 drives the rotating ring 23 to rotate, so that the protrusion 231 disengages from the clamping jaws 22, and the clamping jaws 22 move away from each other under the action of the opening torsion spring 24, releasing the heat dissipation pipe 6. At the same time, the first cylinder 121 drives the push block 122 away from the shaping wheel 111, releasing the formed heat dissipation pipe 6. The pressing block 123 resets to the initial position under the action of the return spring 124, waiting for the next heat dissipation pipe 6 to be fed into the base column 21 from the pre-feeding table 4 for fixing and bending processing.

[0052] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An automatic pipe bending machine with a positioning function, comprising a base (1), the base (1) being provided with a fixing mechanism (2) for fixing a heat dissipation pipe (6); the base (1) being further vertically provided with a central column (11), the central column (11) being coaxially and fixedly provided with a shaping wheel (111), the peripheral wall of the shaping wheel (111) being provided with a first groove (112) adapted to the outer wall of the heat dissipation pipe (6); a deflection table (12) being rotatably provided on the central column (11), characterized in that: The deflection table (12) is provided with a push block (122); the push block (122) is provided with a slide groove (1221) on a side wall close to the shaping wheel (111) and along a tangent direction of the shaping wheel (111); a pressing block (123) is slidably arranged in the slide groove (1221); the pressing block (123) is provided with a second groove (1231) adapted to the outer wall of the heat dissipation tube (6) on the side wall close to the shaping wheel (111); the first groove (112) and the second groove (1231) jointly clamp the heat dissipation tube (6).

2. The automatic pipe bending machine with positioning function according to claim 1, characterized in that: The end of the slide groove (1221) passes through a side wall of the push block (122) close to the fixing mechanism (2), and the end of the pressure block (123) extends from the slide groove (1221) close to the fixing mechanism (2). The pressure block (123) is fixedly provided with a first fixed block (1232) at the end extending out of the slide groove (1221). The push block (122) is fixedly provided with a second fixed block (1222). A return spring (124) is provided between the first fixed block (1232) and the second fixed block (1222), one end of the return spring (124) is fixedly connected to the first fixed block (1232), and the other end of the return spring (124) is fixedly connected to the second fixed block (1222). The return spring (124) drives the first fixed block (1232) to approach the second fixed block (1222).

3. The automatic pipe bending machine with positioning function according to claim 1, characterized in that: The fixing mechanism (2) comprises a base column (21), a clamping claw (22), a rotating ring (23), a protrusion (231), and a torsion assembly (3). The base column (21) is fixedly connected to the base (1). The base column (21) is provided with a through hole (211) at the axis center for the heat dissipation pipe (6) to extend therethrough. The clamping claw (22) is hinged at one end of the base column (21) close to the shaping wheel (111) and is symmetrically provided with a plurality of protrusions (231). One end of the rotating ring (23) is sleeved with a protrusion (231). On the base column (21) and rotatably connected to the base column (21), a plurality of protrusions (231) are symmetrically and fixedly arranged on the inner wall of the other end of the rotating ring (23), the protrusions (231) correspond to the clamping jaws (22) one by one, the protrusions (231) abut against the side of the clamping jaws (22) away from the axis of the through hole (211), all the clamping jaws (22) clamp the heat dissipation pipe (6) together, and the torsion assembly (3) is used to drive the rotating ring (23) to rotate.

4. The automatic pipe bending machine with positioning function according to claim 3 is characterized in that: An open torsion spring (24) is provided at the rotation connection between the clamping jaw (22) and the base column (21), one end of the open torsion spring (24) is fixedly connected to the clamping jaw (22), and the other end of the open torsion spring (24) is fixedly connected to the base column (21), and the open torsion spring (24) drives the clamping jaw (22) to deflect in a direction close to the inner wall of the rotating ring (23).

5. The automatic pipe bending machine with positioning function according to claim 3 is characterized in that: The torsion assembly (3) comprises a first gear (31), a first rack (321), a movable block (32), a second rack (322), a second gear (33), a ratchet (34), a movable pawl (331), a fixed frame (35), a locking pawl (351), and a torsion spring (36); the ratchet (34) is fixedly arranged on the outer wall of the rotating ring (23); the first gear (31) is coaxial with and fixedly connected to the deflection table (12); the movable block (32) is slidably arranged on the base (1); the first rack (321) is fixed on the side wall of the movable block (32); the first rack (321) and the first gear (31) are meshed with each other; the second rack (322) is fixed on the top of the movable block (32); the second gear (33) is sleeved and rotated on the base column (21); the second rack (32 2) is meshed with the second gear (33); the movable pawl (331) is rotatably arranged on the end surface of the second gear (33); the fixed frame (35) is fixedly connected to the base (1), and the locking pawl (351) is rotatably arranged on the fixed frame (35); one of the abutting torsion springs (36) is respectively arranged between the locking pawl (351) and the fixed frame (35), and between the movable pawl (331) and the second gear (33), and the abutting torsion spring (36) drives the locking pawl (351) and the movable pawl (331) to abut against the ratchet (34); the locking pawl (351) is used to hinder the rotation of the ratchet (34) when the deflection platform (12) deflects in a direction away from the base column (21); the movable pawl (331) is used to push the ratchet (34) to rotate when the deflection platform (12) deflects in a direction close to the base column (21).

6. The automatic pipe bending machine with positioning function according to claim 5, characterized in that: A clamping torsion spring (37) is provided between the rotating ring (23) and the base column (21), one end of the clamping torsion spring (37) is fixedly connected to the base column (21), and the other end of the clamping torsion spring (37) is fixedly connected to the rotating ring (23), and when the protrusion (231) abuts against the clamping claw (22), the clamping torsion spring (37) is in a relaxed state.

7. The automatic pipe bending machine with positioning function according to claim 6, characterized in that: An unlocking lever (38) is fixedly arranged on the movable pawl (331) and the locking pawl (351); a sliding ring (39) is slidably arranged on the outer wall of the base column (21) along the axial direction of the base column (21); two push rods (391) are fixedly arranged on the sliding ring (39); the push rods (391) correspond to the levers one by one; a guide curved surface (3911) is provided at one end of the push rod (391) close to the unlocking lever (38); the guide curved surface (3911) can abut against the unlocking lever (38) and push the unlocking lever (38) to move.

8. The automatic pipe bending machine with positioning function according to claim 7, characterized in that: A guide groove (212) is provided on the outer wall of the base column (21) along the axial direction of the base column (21); a guide block (392) is fixed on the inner wall of the sliding ring (39); the guide block (392) slides in the guide groove (212); a plurality of tension springs (213) are provided in the guide groove (212); one end of the tension spring (213) is fixedly connected to the end wall of the guide groove (212); the other end of the tension spring (213) is fixedly connected to the guide block (392); the tension spring (213) drives the sliding ring (39) away from the unlocking lever (38).

9. The automatic pipe bending machine with positioning function according to claim 7, characterized in that: A pre-loading platform (4) is fixedly arranged on the base (1), a pre-loading groove (41) for placing the heat dissipation pipe (6) is provided on the top of the pre-loading platform (4), the pre-loading platform (4) is located on the side of the base column (21) away from the shaping wheel (111), the pre-loading groove (41) and the through hole (211) are located on the same straight line, and a second cylinder (42) is fixedly arranged on the base (1), the output end of the second cylinder (42) can extend into the pre-loading groove (41) and abut against the heat dissipation pipe (6) in the pre-loading groove (41).

10. The automatic pipe bending machine with positioning function according to claim 9, characterized in that: A pushing frame (421) is fixedly arranged on the output end of the second cylinder (42), and the pushing frame (421) can abut against the sliding ring (39).

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