A chipless pipe cutting mechanism of a 13-type numerical control double-mode pipe bending machine

Abstract

The utility model relates to steel pipe processing technical field especially relates to a kind of 13 type numerical control double-mode pipe bender's chipless pipe cutting mechanism. Including fixed plate, cutting device, rotating device;Cutting device is located in the lower side of fixed plate, rotating device is located in the upper side of fixed plate, and rotating device rotates cutting device by toothed belt. Rotating device includes motor fixed on the upper side of fixed plate, and a driving toothed wheel is fixed on motor shaft using nut, and driving toothed wheel rotates cutting device using toothed belt. Cutting device includes pneumatic clamping mechanism, tool mechanism, mandrel mechanism;Mandrel mechanism is columnar, and one end is fixed in the lower part of fixed plate, and the other end is connected tool mechanism, and pneumatic clamping mechanism is arranged outside tool mechanism. Tool mechanism has two cutter shafts and is equipped with bearing, and third cutter shaft is equipped with disc cutter, and copper pipe is sent into the hole between three cutter shafts, and pneumatic clamping mechanism forces three cutter shafts to extrude copper pipe to center, while rotating mechanism drives cutting device to rotate and cut off copper pipe.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, and in particular to a chipless pipe cutting mechanism for a Type 13 CNC double-mode pipe bending machine. Background Technology

[0002] Pipe bending machines typically cut pipes with chips, leaving residue inside the pipe that can affect its usability.

[0003] This utility model provides a chipless pipe cutting mechanism for a Type 13 CNC dual-mode pipe bending machine, which can achieve chipless cutting and improve product quality. Utility Model Content

[0004] The main purpose of this utility model is to provide a chipless pipe cutting mechanism for a Type 13 CNC double-mode pipe bending machine, so as to effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a chipless pipe cutting mechanism for a Type 13 CNC double-mode pipe bending machine, comprising a fixed plate, a cutting device, and a rotating device; the cutting device is disposed on the lower side of the fixed plate, and the rotating device is disposed on the upper side of the fixed plate, the rotating device driving the cutting device to rotate via a toothed belt.

[0006] Preferably, the rotating device includes a motor fixed to the upper side of the fixed plate, a drive gear fixed to the motor shaft with a nut, and a toothed belt fitted on the drive gear.

[0007] Preferably, the cutting device includes a pneumatic clamping mechanism, a cutting tool mechanism, and a mandrel mechanism; the mandrel mechanism has a cylindrical shape, with one end fixed to the lower part of the fixing plate and the other end connected to the cutting tool mechanism, and the pneumatic clamping mechanism is located on the outside of the cutting tool mechanism.

[0008] Preferably, the mandrel mechanism includes a fixed sleeve fixed to the lower part of the fixed plate with fixing bolts, a driven toothed wheel fixed to the outside of the fixed sleeve with set screws, the toothed belt being fitted onto the driven toothed wheel, a first step being provided on the end of the fixed sleeve facing the fixed plate, a second step being provided on the inner side, a core tube being provided at the center of the fixed sleeve, the core tube being a hollow tube, a main bearing being fitted on the outside of the core tube, the main bearing being clamped at the second step of the fixed sleeve, and the core tube being fixed at the first step with a lock nut.

[0009] Preferably, the tool mechanism includes a cylindrical tool holder with a central hole in the middle. A secondary bearing is provided in the central hole at one end of the tool holder, and the other end of the core tube is fitted into the inner hole of the secondary bearing. Three rectangular slots are evenly distributed at the other end of the tool holder. A spring fixing hole is provided on the side of the rectangular slot near the central hole, and a spring is installed inside the hole. A 7-shaped moving tooth is provided in each rectangular slot. A fixing screw hole is provided on the upper side of the moving tooth. An inward inclined surface is provided in the middle of the outer side of the moving tooth. A spring hole is provided on the inner side of the moving tooth, and the outer end of the spring is fitted into the spring hole. A pressure plate is provided on the outer side of the moving tooth, and the pressure plate is fixedly connected to the tool holder with bolts. A step is provided in the central hole of the tool holder, and a hollow tubular nozzle is provided inside the step. A step is provided on the outer side of the nozzle, and the nozzle is threaded to the inner hole of the core tube.

[0010] The pressure plate has three elongated slots that correspond to the three rectangular slots on the cutter holder. Each of the three elongated slots has a cutter shaft, which is fixed in a screw hole on the moving gear. Two cutter shafts are each fixed with two cutting bearings by fixing nuts. A disc cutter is fixed on the third cutter shaft. The contact surfaces between the blade of the disc cutter and the two cutting bearings on the other two cutter shafts are on the same plane.

[0011] Preferably, the pneumatic clamping mechanism includes a sliding sleeve that is slidably fitted between the tool holder and the fixed sleeve. A shift fork is clamped on the sliding sleeve. The upper end of the shift fork is fixed to the cylinder push rod of the cylinder by a shift fork fixing nut. The cylinder is located above the fixed sleeve, in the middle of the toothed belt, and fixed to the fixed plate. A shift fork shaft is provided on the inner side of each of the two shift forks at the lower end of the shift fork. A shift fork bearing is provided on the shift fork shaft and fixed to the shift fork by a shift fork nut.

[0012] The beneficial effects of this invention are: it enables chip-free cutting, is fast, and improves product quality. Attached Figure Description

[0013] Appendix Figure 1 This is a front view of the present utility model.

[0014] Appendix Figure 2 For the appendix Figure 1 AA sectional view.

[0015] Appendix Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0016] Appendix Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0017] Appendix Figure 5 This is a three-dimensional structural diagram of the tooth holder of this utility model.

[0018] Appendix Figure 6 This is a three-dimensional structural diagram of the fixing sleeve of this utility model.

[0019] Appendix Figure 7 This is a cross-sectional view of the fixing sleeve structure of this utility model.

[0020] Appendix Figure 8 This is a three-dimensional structural diagram of the nozzle of this utility model.

[0021] Appendix Figure 9 This is a schematic diagram of the three-dimensional structure of the movable tooth of this utility model.

[0022] Appendix Figure 10 This is a schematic diagram of the three-dimensional structure of the core tube of this utility model.

[0023] Appendix Figure 11 This is a three-dimensional structural diagram of the sliding sleeve of this utility model.

[0024] Appendix Figure 1 —In section 11, there are: fixed plate 1, main bearing 2, toothed belt 3, driven toothed wheel 4, sliding sleeve 5, spring 6, moving tooth 7, fixed screw hole 7-1, spring hole 7-2, inclined plane 7-3, cutting bearing 8, fixed nut 9, cutter shaft 10, nozzle 11, auxiliary bearing 12, shift fork 13, cylinder push rod 14, shift fork fixed nut 15, cylinder 16, motor shaft 17, motor 18, nut 19, driving toothed wheel 19-1, fixed sleeve 20, second step 20-1, first step 20-2, core tube 21, lock nut 21-1, fixed bolt 22, pressure plate 23, cutter holder 24, spring fixed hole 24-1, rectangular groove 24-2, center hole 24-3, disc cutter 25, shift fork nut 26, shift fork bearing 27, and shift fork shaft 28. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Appendix Figure 1 As shown in Figure 11, a chipless pipe cutting mechanism for a type 13 CNC double-mode pipe bending machine includes a fixed plate, a cutting device, and a rotating device; the cutting device is located on the lower side of the fixed plate, and the rotating device is located on the upper side of the fixed plate, and the rotating device drives the cutting device to rotate through a toothed belt.

[0027] Preferably, the rotating device includes a motor 18 fixed on the upper side of the fixed plate 1, and a drive gear 19-1 fixed on the motor shaft 17 with a nut 19. A toothed belt 3 is fitted on the drive gear 19-1.

[0028] Preferably, the cutting device includes a pneumatic clamping mechanism, a cutting tool mechanism, and a mandrel mechanism; the mandrel mechanism has a cylindrical shape, with one end fixed to the lower part of the fixing plate 1 and the other end connected to the cutting tool mechanism, and the pneumatic clamping mechanism is located on the outside of the cutting tool mechanism.

[0029] Preferably, the mandrel mechanism includes a fixed sleeve 20 fixed to the lower part of the fixed plate 1 by a fixing bolt 22. A driven toothed wheel 4 is fixed to the outside of the fixed sleeve 20 by a set screw. The toothed belt 3 is fitted onto the driven toothed wheel 4. The fixed sleeve 20 has a first step 20-2 at one end facing the fixed plate 1 and a second step 20-1 on the inside. A core tube 21 is provided at the center of the fixed sleeve 20. The core tube 21 is a hollow tube. A main bearing 2 is fitted on the outside of the core tube. The main bearing 2 is clamped at the second step 20-1 of the fixed sleeve 20. The core tube 21 is fixed at the first step 20-2 by a lock nut 21-1.

[0030] Preferably, the tool mechanism includes a cylindrical tool holder 24 with a central hole 24-3 in the middle. A secondary bearing 12 is provided at one end of the tool holder 24 through the central hole 24-3. The other end of the core tube 21 is fitted into the inner hole of the secondary bearing 12. Three rectangular slots 24-2 are evenly distributed at the other end of the tool holder 24. A spring fixing hole 24-1 is provided on the side of the rectangular slot 24-2 near the central hole, and a spring 6 is installed inside it. A 7-shaped moving tooth 7 is provided in each of the rectangular slots 24-2. A fixing screw hole 7-1 is provided on the upper side. An inward inclined surface 7-3 is provided in the middle of the outer side of the moving tooth 7. A spring hole 7-2 is provided on the inner side of the moving tooth 7. The outer end of the spring 6 is fitted into the spring hole 7-2. A pressure plate 23 is provided on the outer side of the moving tooth 7. The pressure plate 23 is fixedly connected to the tool holder 24 with bolts. A step is provided in the center hole 24-3 of the tool holder 24. A hollow tubular nozzle 11 is provided in the center hole 24-3. A step is provided on the outer side of the nozzle 11. The nozzle 11 is threaded to the inner hole of the core tube 21.

[0031] The pressure plate 23 has three elongated slots corresponding to the three rectangular slots 24-2 on the cutter holder 24. Each of the three elongated slots has a cutter shaft 10, which is fixed in the fixing screw hole 7-1 on the moving gear 7. Two cutter shafts are fixed with two cutting bearings 8 by fixing nuts 9. The third cutter shaft 10 is fixed with a disc cutter 25. The contact surface between the blade of the disc cutter 25 and the two cutting bearings 8 on the other two cutter shafts is on the same plane.

[0032] Preferably, the pneumatic clamping mechanism includes a sliding sleeve 5 that is slidably fitted between the tool holder 24 and the fixed sleeve 20. A shift fork 13 is clamped on the sliding sleeve 5. The upper end of the shift fork 13 is fixed to the cylinder push rod 14 of the cylinder 16 by a shift fork fixing nut 15. The cylinder 16 is located above the fixed sleeve 20, in the middle of the toothed belt 3, and fixed to the fixed plate 1. A shift fork shaft 28 is provided on the inner side of each of the two shift forks 13 at the lower end of the shift fork 13. A shift fork bearing 27 is provided on the shift fork shaft 28 and fixed to the shift fork 13 by a shift fork nut 26.

[0033] In use, the copper tube conveying mechanism transports the copper tube from the rear side of the fixed plate 1 through the hole in the center of the core tube 21 to a length exceeding the set length of the disc cutter 25. The motor 18 drives the cutter mechanism and the mandrel mechanism to rotate via the toothed belt 3. At the same time, the cylinder 16 pushes out the cylinder rod 14, causing the shift fork 13 to move forward. The shift fork 13 drives the sliding sleeve 5 to move forward. The sliding sleeve 5 presses the three moving teeth 7 towards the center along the inclined surface 7-3 of the moving teeth 7, causing the cutting bearings 8 on the two sets of cutter shafts 10 and the disc cutter 25 to jointly squeeze the copper tube. The disc cutter 25 cuts the copper tube while squeezing it, quickly cutting it off. No copper shavings are generated during the entire process. After cutting, the cylinder push rod 14 retracts, and the three moving teeth 7 move outward from the center under the action of the spring 6, releasing the copper tube. The above actions are repeated for the next cut.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chipless pipe cutting mechanism for a Type 13 CNC double-mode pipe bending machine, characterized in that: It includes a fixed plate, a cutting device, and a rotating device; the cutting device is located on the lower side of the fixed plate, and the rotating device is located on the upper side of the fixed plate. The rotating device drives the cutting device to rotate through a toothed belt.

2. The chipless pipe cutting mechanism of a Type 13 CNC double-mode pipe bending machine according to claim 1, characterized in that: The rotating device includes a motor fixed to the upper side of a fixed plate, a drive gear fixed to the motor shaft with a nut, and a toothed belt fitted onto the drive gear.

3. The chipless pipe cutting mechanism of a Type 13 CNC double-mode pipe bending machine according to claim 1, characterized in that: The cutting device includes a pneumatic clamping mechanism, a cutting tool mechanism, and a mandrel mechanism; the mandrel mechanism has a cylindrical shape, with one end fixed to the lower part of the fixing plate and the other end connected to the cutting tool mechanism, and the pneumatic clamping mechanism is located on the outside of the cutting tool mechanism.

4. The chipless pipe cutting mechanism of a type 13 CNC double-mode pipe bending machine according to claim 3, characterized in that: The mandrel mechanism includes a fixed sleeve fixed to the lower part of the fixed plate with fixing bolts. A driven toothed wheel is fixed to the outside of the fixed sleeve with a set screw. The toothed belt is fitted onto the driven toothed wheel. The fixed sleeve has a first step at the end facing the fixed plate and a second step on the inner side. A core tube is set at the center of the fixed sleeve. The core tube is a hollow tube, and a main bearing is fitted on its outer side. The main bearing is clamped at the second step of the fixed sleeve. The core tube is fixed at the first step with a lock nut.

5. The chipless pipe cutting mechanism of a type 13 CNC double-mode pipe bending machine according to claim 4, characterized in that: The cutting tool mechanism includes a cylindrical tool holder with a central hole in the middle. A secondary bearing is installed in the central hole at one end of the tool holder, and the other end of the core tube is fitted into the inner hole of the secondary bearing. Three rectangular slots are evenly distributed at the other end of the tool holder. A spring fixing hole is provided on the side of the rectangular slot near the central hole, and a spring is installed inside the hole. A 7-shaped moving tooth is provided in each rectangular slot. A fixing screw hole is provided on the upper side of the moving tooth. An inward inclined surface is provided in the middle of the outer side of the moving tooth. A spring hole is provided on the inner side of the moving tooth, and the outer end of the spring is fitted into the spring hole. A pressure plate is provided on the outer side of the moving tooth, and the pressure plate is fixedly connected to the tool holder with bolts. A step is provided in the central hole of the tool holder, and a hollow tubular nozzle is provided inside the step. A step is provided on the outer side of the nozzle, and the nozzle is threaded to the inner hole of the core tube. The pressure plate has three elongated slots that correspond to the three rectangular slots on the cutter holder. Each of the three elongated slots has a cutter shaft, which is fixed in a screw hole on the moving gear. Two cutter shafts are each fixed with two cutting bearings by fixing nuts. A disc cutter is fixed on the third cutter shaft. The contact surfaces between the blade of the disc cutter and the two cutting bearings on the other two cutter shafts are on the same plane.

6. The chipless pipe cutting mechanism of a type 13 CNC double-mode pipe bending machine according to claim 3, characterized in that: The pneumatic clamping mechanism includes a sliding sleeve that is slidably fitted between the tool holder and the fixed sleeve. A shift fork is clamped on the sliding sleeve. The upper end of the shift fork is fixed to the cylinder push rod of the cylinder with a shift fork fixing nut. The cylinder is located above the fixed sleeve, in the middle of the toothed belt, and fixed to the fixed plate. A shift fork shaft is provided on the inner side of each of the two shift forks at the lower end of the shift fork. A shift fork bearing is provided on the shift fork shaft and fixed to the shift fork with a shift fork nut.

Images