Automatic punching and flanging device

Abstract

The invention discloses an automatic punching and flanging device and aims to overcome the defects of low working efficiency and high labor cost due to the fact that punching and flanging operations of pipe fittings are manually carried out in two steps. The punching device comprises a movably-arranged punching unit, a punching head and a flanging head which move in a lifting mode are arranged on the punching unit, a core rod is arranged on the punching unit, the punching head and the flanging head are both arranged towards the core rod, the core rod is inserted into a pipe fitting in a matched mode and positions the pipe fitting, and the punching head moves towards the pipe fitting to punch a punching hole. And the flanging head moves towards the stamping hole and performs flanging on the stamping hole. According to the automatic punching and flanging device, punching and flanging operation on the pipe fitting can be automatically achieved through one device, the working efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe fitting processing, and more specifically, it relates to an automatic punching and flanging device. Background Art

[0002] During the processing of pipe fittings, punching and flanging operations are required. The existing processing method is that workers first transport the pipe fittings to the punching equipment for punching operations, and then transport the punched pipe fittings to the flanging equipment for flanging operations. This has a large labor intensity, low work efficiency, and high labor costs. For example, Chinese Patent Publication No. CN109622744A discloses a pipe fitting punching machine that extrudes the punch die outward through an extrusion block, so that the burrs of the punched holes are located on the outer surface of the pipe fitting, which is convenient for later removal. However, after the pipe fitting punching is completed, workers still need to transfer the pipe fitting to the flanging equipment for flanging operations, resulting in a large labor intensity, low work efficiency, and high labor costs. Summary of the Invention

[0003] In order to overcome the above deficiencies, the present invention provides an automatic punching and flanging device that can automatically perform punching and flanging operations on pipe fittings with one device, improving work efficiency and reducing labor costs.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: An automatic punching and flanging device includes a punching unit that is movably arranged. An upward and downward movable punching head and flanging head are arranged on the punching unit. A core rod is arranged on the punching unit. Both the punching head and the flanging head are arranged towards the core rod. The core rod is adaptively inserted into the pipe fitting to position the pipe fitting. The punching head moves towards the pipe fitting to punch a punching hole, and the flanging head moves towards the punching hole to flange the punching hole.

[0005] When processing the punching of pipe fittings, first load the pipe fitting in place, then move the punching unit so that the core rod is inserted into the pipe fitting to position the pipe fitting. Then the punching head moves downward to perform a punching operation on the side wall of the pipe fitting to punch a punching hole. Then move the punching unit so that the flanging head is aligned with the punching hole, and then the flanging head moves downward to flange the punching hole. Since both the punching head and the flanging head are arranged towards the core rod, during the punching and flanging processes, the core rod serves as a fulcrum to ensure the reliable support of the pipe fitting.

[0006] The automatic punching and flanging device of this patent application can automatically perform punching and flanging operations on pipe fittings with one device, improving work efficiency and reducing labor costs.

[0007] Preferably, a punching groove corresponding and adapted to the punching head is arranged on the core rod.

[0008] A punching groove is arranged on the core rod. During the punching operation of the punching head on the pipe fitting, the punching groove makes room for the punching head, ensuring the quality of the punching hole.

[0009] Preferably, a flanging groove corresponding to and adapted to the flanging head is provided on the core rod.

[0010] A flanging groove is provided on the core rod. During the flanging operation of the pipe fitting by the flanging head, the flanging groove provides space for the flanging head, ensuring the quality of flanging.

[0011] Preferably, a lower pushing seat and an upper positioning seat are correspondingly provided for the punching unit. The pipe fitting is clamped between the lower pushing seat and the upper positioning seat, and the up-and-down movement of the lower pushing seat realizes the up-and-down movement of the pipe fitting.

[0012] The pipe fitting is first loaded onto the lower pushing seat, and then the lower pushing seat rises upward to clamp the pipe fitting between the lower pushing seat and the upper positioning seat. The pipe fitting is clamped reliably and its position is accurate.

[0013] Preferably, a positioning clamp seat that moves up and down is provided on the punching unit. Both the punching head and the flanging head are provided above the positioning clamp seat, and the positioning clamp seat moves upward to clamp onto the pipe fitting.

[0014] After the punching unit moves into place, the positioning clamp seat rises upward to clamp onto the pipe fitting. Both the punching head and the flanging head are provided above the positioning clamp seat. During the punching and flanging operations of the pipe fitting by the punching head and the flanging head, the positioning clamp seat clamps at the corresponding positions of the punching and flanging of the pipe fitting, ensuring the stability of the pipe fitting during punching and flanging.

[0015] Preferably, a necking unit is provided behind the punching unit. The necking unit includes a necking end and a positioning end that are oppositely arranged. Both the necking end and the positioning end are movably arranged. A lifting seat and an upper limit seat are provided between the necking end and the positioning end, and the pipe fitting is clamped between the lifting seat and the upper limit seat.

[0016] After the pipe fitting reaches the necking unit, the lifting seat rises upward to clamp the pipe fitting between the lifting seat and the upper limit seat for positioning. Then, the necking end and the positioning end move relatively and are respectively inserted into both ends of the pipe fitting. The necking end performs a necking operation on one end of the pipe fitting, and the positioning end performs positioning on the other end of the pipe fitting.

[0017] Preferably, a positioning pin adapted to the punching hole is provided between the necking end and the positioning end.

[0018] When the lifting seat rises upward to clamp the pipe fitting between the lifting seat and the upper limit seat for positioning, the punching hole on the pipe fitting is inserted together with the positioning pin to achieve accurate axial positioning of the pipe fitting.

[0019] Preferably, a chamfering unit is provided in front of the punching unit. The chamfering unit includes a chamfering head that is movably arranged, and the chamfering head is adapted to the end of the pipe fitting.

[0020] Before punching and flanging the pipe fittings, chamfering is first carried out through a chamfering unit to achieve deburring. The chamfering head cooperates with the end of the pipe fitting for chamfering, and the operation is convenient.

[0021] Preferably, a feeding unit is arranged in front of the punching unit. The feeding unit includes two feeding screws arranged oppositely. The pipe fitting is supported between the two feeding screws, and the rotation of the feeding screws drives the pipe fitting to move for feeding.

[0022] The pipe fitting is fed through the feeding unit. The two oppositely arranged feeding screws rotate, thereby realizing the conveying of the pipe fitting, which is stable and reliable.

[0023] Preferably, an installation table is arranged below the punching unit. A pushing frame arranged to move is arranged on the installation table. A loading seat is arranged on the pushing frame, and a positioning groove is arranged on the loading seat. The pipe fitting is adaptively inserted into the positioning groove.

[0024] The pipe fitting is loaded into the positioning groove on the loading seat, and the pushing frame moves, thereby realizing the pushing of the pipe fitting.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The automatic punching and flanging device of the present patent application can automatically realize the punching and flanging operations of the pipe fittings on one device, improving work efficiency and reducing labor costs; (2) The entire device integrates the chamfering, punching, flanging, and necking processes of the pipe fittings onto one device to complete, greatly improving work efficiency; (3) After the punching unit moves into place, the positioning clamp seat rises upward to clamp the pipe fitting, and the punching head and the flanging head are both arranged above the positioning clamp seat. During the punching and flanging operations of the punching head and the flanging head on the pipe fitting, the positioning clamp seat clamps at the corresponding positions of the punching and flanging of the pipe fitting, ensuring the stability of the pipe fitting during punching and flanging. Description of the Drawings

[0026] Figure 1 is the side view of the present invention.

[0027] Figure 2 is the structural schematic diagram of the present invention.

[0028] Figure 3 is the connection schematic diagram of the punching unit of the present invention.

[0029] Figure 4 is the structural diagram of the punching unit of the present invention.

[0030] Figure 5 is the connection schematic diagram of the necking unit of the present invention.

[0031] Figure 6 is the cross-sectional view of the necking unit of the present invention.

[0032] Figure 7 is the connection diagram of the punching head in Embodiment 2 of the present invention.

[0033] In the figure: 1. Punching unit, 2. Punching head, 3. Flanging head, 4. Core rod, 5. Sharp cutting edge, 6. Flanging chamfer, 7. Grooving, 8. Flanging groove, 9. Air pipe, 10. Mounting seat, 11. Lower pushing seat, 12. Upper positioning seat, 13. Positioning clamping groove, 14. Positioning clamping seat, 15. Mounting frame, 16. Partition board, 17. Moving seat, 18. Mounting table, 19. Guide rod, 20. Top plate, 21. Pushing groove, 22. Pushing plate, 23. Pushing rib, 24. Punching oil cylinder, 25. Flanging oil cylinder, 26. Punching seat, 27. Thrust rod, 28. Preloading spring, 29. Push rod, 30. Connecting seat, 31. Inclined rack, 32. Buffer spring, 33. Pushing inclined block, 34. Locking head, 35. Connecting groove, 36. Avoidance groove, 37. Chamfering unit, 38. Loading unit, 39. Loading screw, 40. Limit strip, 41. Loading rack, 42. Loading plate, 43. Positioning head, 44. Sliding seat, 45. Positioning sleeve, 46. Chamfering motor, 47. Necking unit, 48. Necking end, 49. Positioning end, 50. Lifting seat, 51. Upper limit seat, 52. Positioning pin, 53. Positioning column, 54. Guide sleeve, 55. Necking ring, 56. Punching column, 57. Limit sleeve, 58. Limit column, 59. Pushing rack, 60. Positioning groove, 61. Slide plate, 62. Baffle plate. Detailed implementation mode

[0034] The technical solution of the present invention will be further specifically described below through specific embodiments and in conjunction with the drawings: Embodiment 1: An automatic punching and flanging device (see Figures 1 to 6 ), including a punching unit 1 that is movably arranged, with two punching units 1 arranged opposite to each other. An elevating and moving punching head 2 and flanging head 3 are arranged on the punching unit 1. The end face of the punching head 2 has a V-shaped structure, and the edge of the end of the punching head 2 is a sharp cutting edge 5. The edge of the end of the flanging head 3 is provided with a flanging chamfer 6, and the flanging chamfer 6 plays a guiding role. A core rod 4 is arranged on the punching unit 1, and both the punching head 2 and the flanging head 3 are arranged towards the core rod 4. A grooving 7 corresponding and adapted to the punching head 2 is arranged on the core rod 4, and a flanging groove 8 corresponding and adapted to the flanging head 3 is arranged on the core rod 4. Both the grooving 7 and the flanging groove 8 are grooves. The core rod 4 is adaptively inserted into the pipe fitting and positions the pipe fitting. The punching head 2 moves towards the pipe fitting to punch a punching hole, and the flanging head 3 moves towards the punching hole and flanges the punching hole. A flanging groove 8 is arranged on the core rod 4. During the flanging operation of the flanging head 3 on the pipe fitting, the flanging groove 8 makes space for the flanging head 3, ensuring the quality of the flanging. A flanging groove 8 is arranged on the core rod 4. During the flanging operation of the flanging head 3 on the pipe fitting, the flanging groove 8 makes space for the flanging head 3, ensuring the quality of the flanging.

[0035] An air pipe 9 is installed on the core rod 4, and the end of the air pipe 9 is connected to the punching groove 7. An installation groove corresponding to the air pipe 9 is provided on the outer wall of the core rod 4. The air pipe 9 is installed in the installation groove and extends to the outer end of the core rod 4. One end of the core rod 4 is fixedly installed on the installation seat 10, and the other end of the core rod 4 is suspended. After punching, the waste remains in the punching groove 7. After the core rod 4 moves away from the pipe fitting, air is blown into the punching groove 7 through the air pipe 9 to blow the waste away from the punching groove 7.

[0036] The punching unit 1 is correspondingly provided with a lower pushing seat 11 and an upper positioning seat 12. The pipe fitting is clamped between the lower pushing seat 11 and the upper positioning seat 12. Semi-circular positioning clamping grooves 13 are provided on both the lower pushing seat 11 and the upper positioning seat 12, and the pipe fitting is clamped between the two positioning clamping grooves 13 stably and reliably. The pipe fitting is first loaded onto the positioning clamping groove 13 on the lower pushing seat 11, and the lower pushing seat 11 moves up and down to realize the lifting of the pipe fitting.

[0037] A lifting and moving positioning clamping seat 14 is provided on the punching unit 1. The punching head 2 and the flanging head 3 are both arranged above the positioning clamping seat 14, and the positioning clamping seat 14 moves upward to clamp onto the pipe fitting. An installation frame 15 is provided on the installation table 18, a partition plate 16 is provided on the installation frame 15, and two punching units 1 are respectively arranged on both sides of the partition plate 16. The punching unit 1 includes a moving seat 17 and an installation seat 10. An installation table 18 is provided below the punching unit 1. The moving seat 17 is movably installed on the installation table 18 and is driven by a piston cylinder to realize reciprocating movement. The installation seat 10 is fixedly installed on the moving seat 17. The positioning clamping seat 14 is connected with a plurality of guide rods 19, and the guide rods 19 are movably inserted and connected with the installation seat 10. The positioning clamping seat 14 is connected to the top plate 20 through the guide rods 19. An inclined pushing groove 21 is provided on the top plate 20. A push plate 22 driven by a piston cylinder is installed on the installation seat 10. An inclined pushing rib 23 is provided on the push plate 22. The pushing groove 21 is a dovetail groove, and the pushing rib 23 is adaptively connected with the pushing groove 21. The reciprocating movement of the push plate 22 drives the lifting and moving of the top plate 20. A punching oil cylinder 24 and a flanging oil cylinder 25 are installed on the installation seat 10. The telescopic rods of the punching oil cylinder 24 and the flanging oil cylinder 25 are respectively connected to the punching seat 26 and the flanging seat. The punching head 2 is connected to the punching seat 26, and the flanging head 3 is connected to the flanging seat.

[0038] After the punching unit 1 moves into place, the push plate 22 moves to drive the positioning clamping seat 14 to rise upward and clamp onto the pipe fitting. Since the punching head 2 and the flanging head 3 are both arranged above the positioning clamping seat 14, during the punching and flanging operations of the pipe fitting by the punching head 2 and the flanging head 3, the positioning clamping seat 14 clamps at the corresponding positions of the punching and flanging of the pipe fitting, ensuring the stability of the pipe fitting during the punching and flanging processes.

[0039] A chamfering unit 37 and a loading unit 38 are arranged in front of the punching unit 1. The chamfering unit 37 is placed between the loading unit 38 and the punching unit 1. The loading unit 38 includes two oppositely arranged loading screws 39. The pipe fitting is supported between the two loading screws 39. The rotation of the loading screws 39 drives the pipe fitting to move for loading. A limiting bar 40 is installed above the loading screws 39. The end of the pipe fitting is conveyed in the gap between the loading screw 39 and the limiting bar 40. The loading unit 38 is correspondingly provided with a loading rack 41. The loading screw 39 is rotatably installed on the loading rack 41. The loading screw 39 is inclined. The higher side of the loading screw 39 is placed on the installation table 18. An inclined loading plate 42 is installed on the loading rack 41. The pipe fitting is loaded onto the loading plate 42 and slides onto the loading screw 39 under the action of gravity, and the loading is realized with the rotation of the loading screw 39. A transmission rod driven by a motor is installed on the loading rack 41. Both loading screws 39 are in transmission connection with the transmission rod.

[0040] The chamfering unit 37 includes a movably arranged chamfering head, which is adapted to the end of the pipe fitting. A positioning head 43 is correspondingly arranged on the installation table 18 and the chamfering head. One end of the pipe fitting is inserted and positioned with the positioning head 43, and the other end of the pipe fitting is cooperatively connected with the chamfering head. A sliding seat 44 corresponding to the chamfering head is installed on the installation table 18. The sliding seat 44 is driven to move by a piston cylinder. A positioning sleeve 45 is arranged on the sliding seat 44, which is adapted to the pipe fitting. The chamfering head is placed in the positioning sleeve 45. A chamfering motor 46 is installed on the sliding seat 44, and the chamfering head is installed on the output shaft of the chamfering motor 46. Before the pipe fitting is punched and flanged, it is first chamfered by the chamfering unit 37 to realize the deburring operation.

[0041] A necking unit 47 is arranged behind the punching unit 1. The necking unit 47 includes oppositely arranged necking ends 48 and positioning ends 49, both of which are movably arranged. A lifting seat 50 and an upper limiting seat 51 are arranged between the necking end 48 and the positioning end 49. The pipe fitting is clamped between the lifting seat 50 and the upper limiting seat 51. A positioning pin 52 adapted to the punching hole is arranged between the necking end 48 and the positioning end 49. Both the upper limiting seat 51 and the positioning pin 52 are fixedly connected to the installation frame 15. Semi-circular limiting grooves are arranged on both the lifting seat 50 and the upper limiting seat 51. The pipe fitting is first sent to the limiting groove on the lifting seat 50, and the lifting seat 50 rises to clamp the pipe fitting between the two limiting grooves to realize positioning. At the same time, the punching hole on the pipe fitting is inserted together with the positioning pin 52 to realize the precise positioning of the axial direction of the pipe fitting. Then the necking end 48 and the positioning end 49 move relatively and are respectively inserted into both ends of the pipe fitting. The necking end 48 performs a necking operation on one end of the pipe fitting, and the positioning end 49 positions the other end of the pipe fitting.

[0042] A positioning post 53 and a guide sleeve 54 are arranged on the necking end head 48. A necking ring 55 is installed between the guide sleeve 54 and the positioning post 53. An arc-shaped necking surface is arranged on the inner edge of the open end of the necking ring 55. The inner diameter of the necking ring 55 is smaller than the outer diameter of the pipe fitting. The positioning post 53 is adaptively inserted into the pipe fitting. A punching post 56 is installed on the guide sleeve 54. The punching post 56 is driven by an oil cylinder to move. The punching post 56 penetrates through the guide sleeve 54.

[0043] A limit sleeve 57 and a limit post 58 are arranged on the positioning end head 49. The limit post 58 is arranged in the limit sleeve 57. The limit post 58 is adapted to the pipe fitting. The pipe fitting is clamped and positioned between the limit post 58 and the limit sleeve 57. The end of the pipe fitting abuts against the bottom of the limit sleeve 57 to achieve positioning. A punching post 56 is installed on the limit sleeve 57. The punching post 56 is driven by an oil cylinder to move. The punching post 56 penetrates through the limit sleeve 57.

[0044] A push material frame 59 which is movably arranged is arranged on the installation table 18. The push material frame 59 is driven by a piston cylinder to reciprocate. A material loading seat is arranged on the push material frame 59. A positioning groove 60 is arranged on the material loading seat. The pipe fitting is adaptively inserted into the positioning groove 60. Two positioning grooves 60 are arranged on the material loading seat. A slide plate 61 and a baffle 62 corresponding to the feeding screw 39 are arranged at the edge of the installation table 18. The slide plate 61 is arranged horizontally and obliquely. The baffle 62 is arranged vertically. A blanking gap is arranged between the slide plate 61 and the baffle 62. The outer positioning groove 60 is arranged corresponding to the blanking gap.

[0045] The pipe fitting is loaded onto the loading plate 42 and slides onto the feeding screw 39 under the action of gravity. The feeding screw 39 rotates to convey the pipe fitting to the slide plate 61 and then slides into the blanking gap. At this time, the pipe fitting is supported in the outer positioning groove 60 of the material loading seat. Then the chamfering unit 37 works. The piston cylinder drives the sliding seat 44 to move, so that one end of the pipe fitting is inserted and positioned with the positioning head 43, and the other end of the pipe fitting is connected with the chamfering head. The chamfering motor 46 drives the chamfering head to rotate to perform chamfering operation on the end of the pipe fitting.

[0046] After the chamfering of the pipe fitting is completed, the piston cylinder drives the push material frame 59 to move towards the punching unit 1. After moving in place, the lower push seat 11 rises upwards, so that the pipe fitting is clamped between the lower push seat 11 and the upper positioning seat 12. Then the punching unit 1 is moved, so that the core rods 4 of the two punching units 1 are inserted into the pipe fitting to position the pipe fitting. The push plate 22 moves to drive the positioning clamp seat 14 to rise upwards to clamp the pipe fitting. Then the punching head 2 moves downwards to perform punching operation on the side wall of the pipe fitting to punch out punching holes. Then the punching unit 1 is moved, so that the flanging head 3 is aligned with the punching hole. Then the flanging head 3 moves downwards to flange the punching hole.

[0047] After punching and flanging are completed, the piston cylinder drives the pusher frame 59 to move towards the necking unit 47. After moving into place, the lifting seat 50 rises upward, clamping the pipe fitting between the lifting seat 50 and the upper limit seat 51. The punching holes on the pipe fitting are inserted together with the positioning pins 52. Then, the necking end 48 and the positioning end 49 move relative to each other and are respectively inserted into both ends of the pipe fitting. The necking end 48 performs a necking operation on one end of the pipe fitting, and the positioning end 49 positions the other end of the pipe fitting. At the same time, the punching column 56 performs a punching operation on both ends of the pipe fitting. The entire device integrates the chamfering, punching, flanging, and necking processes of the pipe fitting onto one piece of equipment to complete, greatly improving the work efficiency.

[0048] Embodiment 2: An automatic punching and flanging device (see Figures 1 to 7 ), which includes a punching unit 1 arranged to move. There are two punching units 1 arranged opposite to each other. An upward and downward moving punching head 2 and a flanging head 3 are arranged on the punching unit 1. The end face of the punching head 2 has a V-shaped structure, and the edge of the end of the punching head 2 is a pointed blade 5. A flanging chamfer 6 is arranged at the edge of the end of the flanging head 3, and the flanging chamfer 6 plays a guiding role. A core rod 4 is arranged on the punching unit 1. Both the punching head 2 and the flanging head 3 are arranged towards the core rod 4. A punching groove 7 corresponding and adapted to the punching head 2 is arranged on the core rod 4, and a flanging groove 8 corresponding and adapted to the flanging head 3 is arranged on the core rod 4. Both the punching groove 7 and the flanging groove 8 are grooves. The core rod 4 is adapted to be inserted into the pipe fitting and position the pipe fitting. The punching head 2 moves towards the pipe fitting to punch a punching hole, and the flanging head 3 moves towards the punching hole and flanges the punching hole. A flanging groove 8 is arranged on the core rod 4. During the process of the flanging head 3 flanging the pipe fitting, the flanging groove 8 makes space for the flanging head 3, ensuring the quality of the flanging. A flanging groove 8 is arranged on the core rod 4. During the process of the flanging head 3 flanging the pipe fitting, the flanging groove 8 makes space for the flanging head 3, ensuring the quality of the flanging.

[0049] An air pipe 9 is installed on the core rod 4, and the end of the air pipe 9 communicates with the punching groove 7. An installation groove corresponding to the air pipe 9 is arranged on the outer wall of the core rod 4. The air pipe 9 is installed in the installation groove. The air pipe 9 extends to the outer end of the core rod 4. One end of the core rod 4 is fixedly installed on the installation seat 10, and the other end of the core rod 4 is suspended. After punching is completed, the waste remains in the punching groove 7. After the core rod 4 moves away from the pipe fitting, air is blown into the punching groove 7 through the air pipe 9 to blow the waste away from the punching groove 7.

[0050] A lower push seat 11 and an upper positioning seat 12 are correspondingly arranged for the punching unit 1. The pipe fitting is clamped between the lower push seat 11 and the upper positioning seat 12. Semi-circular positioning clamping grooves 13 are arranged on both the lower push seat 11 and the upper positioning seat 12. The pipe fitting is clamped between the two positioning clamping grooves 13 stably and reliably. The pipe fitting is first loaded onto the positioning clamping groove 13 on the lower push seat 11, and the lower push seat 11 moves upward and downward to realize the lifting of the pipe fitting.

[0051] A positioning clamp seat 14 that moves up and down is arranged on the punching unit 1. The punching head 2 and the flanging head 3 are both arranged above the positioning clamp seat 14. The positioning clamp seat 14 moves upward to clamp onto the pipe fitting. An installation frame 15 is arranged on the installation table 18. A partition plate 16 is arranged on the installation frame 15. The two punching units 1 are respectively arranged on both sides of the partition plate 16. The punching unit 1 includes a moving seat 17 and a mounting seat 10. An installation table 18 is arranged below the punching unit 1. The moving seat 17 is movably installed on the installation table 18 and is driven by a piston cylinder to achieve reciprocating movement. The mounting seat 10 is fixedly installed on the moving seat 17. The positioning clamp seat 14 is connected to a plurality of guide rods 19. The guide rods 19 are movably inserted and connected to the mounting seat 10. The positioning clamp seat 14 is connected to a top plate 20 through the guide rods 19. An inclined pushing groove 21 is arranged on the top plate 20. A push plate 22 driven by a piston cylinder is installed on the mounting seat 10. An inclined pushing ridge 23 is arranged on the push plate 22. The pushing groove 21 is a dovetail groove. The pushing ridge 23 is adaptively connected to the pushing groove 21. The reciprocating movement of the push plate 22 drives the up and down movement of the top plate 20. A punching oil cylinder 24 and a flanging oil cylinder 25 are installed on the mounting seat 10. The telescopic rods of the punching oil cylinder 24 and the flanging oil cylinder 25 are respectively connected to a punching seat 26 and a flanging seat. The punching head 2 is connected to the punching seat 26. The flanging head 3 is connected to the flanging seat.

[0052] After the punching unit 1 moves into place, the push plate 22 moves to drive the positioning clamp seat 14 to rise upward and clamp onto the pipe fitting. The punching head 2 and the flanging head 3 are both arranged above the positioning clamp seat 14. During the punching and flanging operations of the pipe fitting by the punching head 2 and the flanging head 3, the positioning clamp seat 14 clamps at the corresponding positions of the punching and flanging of the pipe fitting, ensuring the stability of the pipe fitting during the punching and flanging processes.

[0053] The punching head 2 is connected to the punching seat 26. A ejector rod 27 is movably inserted into the punching seat 26. A pre-tightening spring 28 is connected between the ejector rod 27 and the punching seat 26. The ejector rod 27 protrudes from the end of the punching head 2. The punching seat 26 is connected to a push rod 29. A connecting seat 30 is correspondingly arranged on the punching seat 26. A movably arranged inclined rack 31 is installed on the connecting seat 30. A buffer spring 32 is connected between the inclined rack 31 and the connecting seat 30. A pushing inclined block 33 is arranged on the inclined rack 31. A locking head 34 is arranged on the ejector rod 27. The end of the locking head 34 is stuck in the tooth groove of the inclined rack 31. The push rod 29 abuts against the pushing inclined block 33 to push the inclined rack 31 to move away from the locking head 34.

[0054] During the downward movement of the punching head 2, the push rod 27 moves downward with the punching head 2, and at the same time, the locking head 34 on the push rod 27 slides over the bevel teeth on the bevel rack 31, and the bevel rack 31 does not hinder the locking head 34. After the punching is completed, the punching head 2 moves upward and returns to its original position. This process is divided into two stages. In the first stage, the end of the locking head 34 is stuck in the tooth groove of the bevel rack 31. At this time, the punching head 2 moves upward, while the push rod 27 remains stationary. The push rod 27 moves downward relative to the end of the punching head 2, thereby preventing the punched waste from being stuck at the end of the punching head 2. In the second stage, the push rod 29 pushes against the push bevel block 33 to push the bevel rack 31 away from the locking head 34, removing the locking positioning of the bevel rack 31 on the locking head 34, and the push rod 27 can move upward and return to its original position.

[0055] The bevel teeth on the bevel rack 31 are tilted downward, and an inclined guide surface is set on the end face of the locking head 34. The guide surface is close to the bevel teeth. During the downward movement of the locking head 34, the guide surface can slide over the bevel teeth and push the bevel rack 31 to move. The bevel teeth can achieve positioning and locking of the locking head 34 in the upward moving direction, so that the locking head 34 is stuck on the bevel teeth.

[0056] The connecting seat 30 is provided with a connecting groove 35, the oblique rack 31 is slidably connected to the connecting groove 35, the buffer spring 32 is installed in the connecting groove 35, and a limit block is installed at the open end of the connecting groove 35, and the limit block limits the oblique rack 31. An inclined surface is provided on the pushing oblique block 33, and the end surface of the push rod 29 is inclined, and the end surface of the push rod 29 is adapted to the inclined surface on the pushing oblique block 33. The connecting seat 30 is tightly connected to the mounting seat 10. The punching seat 26 is provided with an insertion hole, and the push rod 27 is movably inserted and connected with the insertion hole. An avoidance groove 36 is provided on the side wall of the punching seat 26, and the locking head 34 passes through the avoidance groove 36. The punching seat 26 is tightly connected to the telescopic rod of the punching cylinder 24.

[0057] A chamfering unit 37 and a feeding unit 38 are arranged in front of the punching unit 1. The chamfering unit 37 is placed between the feeding unit 38 and the punching unit 1. The feeding unit 38 includes two feeding screws 39 arranged opposite to each other. The pipe is supported between the two feeding screws 39. The feeding screw 39 rotates to drive the pipe to move and feed. A limit bar 40 is installed above the feeding screw 39. The end of the pipe is placed in the gap between the feeding screw 39 and the limit bar 40 for transportation. A feeding rack 41 is correspondingly arranged for the feeding unit 38. The feeding screw 39 is rotatably installed on the feeding rack 41. The feeding screw 39 is tilted. The higher side of the feeding screw 39 is placed on the mounting table 18. The feeding rack 41 is installed with a tilted loading plate 42. The pipe is loaded on the loading plate 42 and slides onto the feeding screw 39 under the action of gravity. The feeding is realized as the feeding screw 39 rotates. A transmission rod driven by a motor is installed on the feeding frame 41, and the two feeding screw rods 39 are both connected to the transmission rod.

[0058] The chamfering unit 37 includes a chamfering head arranged to move. The chamfering head is adapted to the end of the pipe fitting. A positioning head 43 is correspondingly arranged on the mounting table 18 opposite to the chamfering head. One end of the pipe fitting is inserted and positioned with the positioning head 43, and the other end of the pipe fitting is cooperatively connected with the chamfering head. A sliding seat 44 corresponding to the chamfering head is mounted on the mounting table 18. The sliding seat 44 is driven to move by a piston cylinder. A positioning sleeve 45 is arranged on the sliding seat 44. The positioning sleeve 45 is adapted to the pipe fitting. The chamfering head is placed in the positioning sleeve 45. A chamfering motor 46 is mounted on the sliding seat 44, and the chamfering head is mounted on the output shaft of the chamfering motor 46. Before the pipe fitting is punched and flanged, it is first chamfered by the chamfering unit 37 to perform deburring operation.

[0059] A necking unit 47 is arranged behind the punching unit 1. The necking unit 47 includes a necking end head 48 and a positioning end head 49 arranged oppositely. Both the necking end head 48 and the positioning end head 49 are arranged to move. A lifting seat 50 and an upper limit seat 51 are arranged between the necking end head 48 and the positioning end head 49. The pipe fitting is clamped between the lifting seat 50 and the upper limit seat 51. A positioning pin 52 adapted to the punching hole is arranged between the necking end head 48 and the positioning end head 49. Both the upper limit seat 51 and the positioning pin 52 are fixedly connected to the mounting frame 15. Semi-circular limiting grooves are arranged on both the lifting seat 50 and the upper limit seat 51. The pipe fitting is first sent to the limiting groove on the lifting seat 50, and the lifting seat 50 rises to clamp the pipe fitting between the two limiting grooves to achieve positioning. At the same time, the punching hole on the pipe fitting is inserted together with the positioning pin 52 to achieve precise positioning of the axial direction of the pipe fitting. Then the necking end head 48 and the positioning end head 49 move relatively and are respectively inserted into both ends of the pipe fitting. The necking end head 48 performs a necking operation on one end of the pipe fitting, and the positioning end head 49 positions the other end of the pipe fitting.

[0060] A positioning column 53 and a guide sleeve 54 are arranged on the necking end head 48. A necking ring 55 is mounted between the guide sleeve 54 and the positioning column 53. An arc-shaped necking surface is arranged on the inner edge of the open end of the necking ring 55. The inner diameter of the necking ring 55 is smaller than the outer diameter of the pipe fitting. The positioning column 53 is inserted and adapted to the pipe fitting. A punching column 56 is mounted on the guide sleeve 54. The punching column 56 is driven to move by an oil cylinder. The punching column 56 penetrates through the guide sleeve 54.

[0061] A limiting sleeve 57 and a limiting column 58 are arranged on the positioning end head 49. The limiting column 58 is arranged in the limiting sleeve 57. The limiting column 58 is adapted to the pipe fitting. The pipe fitting is clamped and positioned between the limiting column 58 and the limiting sleeve 57. The end of the pipe fitting abuts against the bottom of the limiting sleeve 57 to achieve positioning. A punching column 56 is mounted on the limiting sleeve 57. The punching column 56 is driven to move by an oil cylinder. The punching column 56 penetrates through the limiting sleeve 57.

[0062] A pusher frame 59 with a movable setting is arranged on the installation table 18. The pusher frame 59 is driven by a piston cylinder to achieve reciprocating movement. A material-carrying seat is arranged on the pusher frame 59, and a positioning groove 60 is arranged on the material-carrying seat. The pipe fitting is adaptively inserted into the positioning groove 60. Two positioning grooves 60 are arranged on the material-carrying seat. A slide plate 61 and a baffle 62 corresponding to the feeding screw 39 are arranged at the edge of the installation table 18. The slide plate 61 is arranged horizontally and obliquely, the baffle 62 is arranged vertically, a blanking gap is arranged between the slide plate 61 and the baffle 62, and the outer positioning groove 60 is arranged corresponding to the blanking gap.

[0063] The pipe fitting is loaded onto the material-carrying plate 42 and slides onto the feeding screw 39 under the action of gravity. The feeding screw 39 rotates to convey the pipe fitting onto the slide plate 61 and then slides into the blanking gap. At this time, the pipe fitting is supported in the positioning groove 60 outside the material-carrying seat. Then the chamfering unit 37 works. The piston cylinder drives the sliding seat 44 to move, so that one end of the pipe fitting is inserted and positioned with the positioning head 43, and the other end of the pipe fitting is connected with the chamfering head. The chamfering motor 46 drives the chamfering head to rotate to perform chamfering operation on the end of the pipe fitting.

[0064] After the chamfering of the pipe fitting is completed, the piston cylinder drives the pusher frame 59 to move towards the punching unit 1. After moving in place, the lower pushing seat 11 rises upwards, so that the pipe fitting is clamped between the lower pushing seat 11 and the upper positioning seat 12. Then the punching unit 1 is moved, so that the core rods 4 of the two punching units 1 are inserted into the pipe fitting to position the pipe fitting. The push plate 22 moves to drive the positioning clamp seat 14 to rise upwards to clamp the pipe fitting. Then the punching head 2 moves downwards to perform punching operation on the side wall of the pipe fitting, punching out the punching holes. Then the punching unit 1 is moved, so that the flanging head 3 is aligned with the punching hole. Then the flanging head 3 moves downwards to flange the punching hole.

[0065] After punching and flanging are completed, the piston cylinder drives the pusher frame 59 to move towards the necking unit 47. After moving in place, the lifting seat 50 rises upwards, so that the pipe fitting is clamped between the lifting seat 50 and the upper limit seat 51. The punching hole on the pipe fitting is inserted together with the positioning pin 52. Then the necking end 48 and the positioning end 49 move relatively and are respectively inserted into both ends of the pipe fitting. The necking end 48 performs necking operation on one end of the pipe fitting, the positioning end 49 positions the other end of the pipe fitting, and at the same time the punching column 56 performs punching operation on both ends of the pipe fitting. The whole device integrates the chamfering, punching, flanging and necking processes of the pipe fitting onto one device to complete, greatly improving the working efficiency.

[0066] The above-described embodiments are only the preferred solutions of the present invention, and do not impose any form of limitation on the present invention. There are other variants and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. An automatic punching and flanging device, characterized in that It includes a punching unit with a moving setting. A punching head and a flanging head that move up and down are arranged on the punching unit. A core rod is arranged on the punching unit. Both the punching head and the flanging head are arranged towards the core rod. The core rod is adapted to be inserted into the pipe fitting and position the pipe fitting. The punching head moves towards the pipe fitting to punch a punching hole, and the flanging head moves towards the punching hole and flanges the punching hole.

2. The automatic punching and flanging device according to claim 1, characterized in that, A punching groove corresponding to and adapted to the punching head is arranged on the core rod.

3. An automatic punching and flanging device according to claim 1, characterized in that, A flanging groove corresponding to and adapted to the flanging head is arranged on the core rod.

4. An automatic punching and flanging device according to claim 1, characterized in that, A lower pushing seat and an upper positioning seat are correspondingly arranged on the punching unit. The pipe fitting is clamped between the lower pushing seat and the upper positioning seat. The lower pushing seat moves up and down to realize the lifting of the pipe fitting.

5. The automatic punching and flanging device according to claim 4, characterized in that, A positioning clamp seat that moves up and down is arranged on the punching unit. Both the punching head and the flanging head are arranged above the positioning clamp seat. The positioning clamp seat moves up to clamp onto the pipe fitting.

6. The automatic punching and flanging device according to claim 1, characterized in that, A necking unit is arranged behind the punching unit. The necking unit includes a necking end head and a positioning end head that are arranged oppositely. Both the necking end head and the positioning end head are movably arranged. A lifting seat and an upper limiting seat are arranged between the necking end head and the positioning end head. The pipe fitting is clamped between the lifting seat and the upper limiting seat.

7. An automatic punching and flanging device according to claim 6, characterized in that, A positioning pin adapted to the punching hole is arranged between the necking end head and the positioning end head.

8. An automatic punching and flanging device according to claim 1, characterized in that, A chamfering unit is arranged in front of the punching unit. The chamfering unit includes a chamfering head that is movably arranged. The chamfering head is adapted to the end of the pipe fitting.

9. The automatic punching and flanging device according to claim 1, characterized in that, A feeding unit is arranged in front of the punching unit. The feeding unit includes two feeding screws arranged oppositely. The pipe fitting is supported between the two feeding screws. The rotation of the feeding screws drives the pipe fitting to move for feeding.

10. An automatic punching and flanging device according to any one of claims 1 to 9, characterized in that, An installation table is arranged below the punching unit. A pushing frame that moves is arranged on the installation table. A loading seat is arranged on the pushing frame. A positioning groove is arranged on the loading seat. The pipe fitting is inserted into the positioning groove in an adapted manner.

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