Stamping device for pipe fitting precision machining

Abstract

The invention discloses a stamping device for pipe fitting precision machining, and belongs to the technical field of pipe fitting stamping, the stamping device comprises a base table, the top of the base table is connected with a side support, the side support is connected with a stamping rod, and the bottom of the stamping rod is connected with an auxiliary stamping assembly. According to the device, by arranging the auxiliary stamping assembly, when the bottom of a stamping plate is attached to the top of the pipe fitting, a fixed motor drives an outer layer supporting plate to expand outwards through a movable lead screw, a lead screw base, a first connecting rod and a rotating rod and supports and limits the inner wall of the pipe fitting, and then a stamping rod drives the pipe fitting to move downwards through cooperation of the stamping plate and the outer supporting plate; in the process, the flexible friction wheel rotates and provides a guiding effect in the vertical direction, the pipe fitting is made to make contact with the stamping die to complete stamping, the inner wall of the pipe fitting is supported through the outer supporting plate, the pressure resistance of the pipe fitting in the vertical direction can be improved, the possibility of deformation of the pipe fitting in the stamping process is reduced, and therefore the quality of the finished pipe fitting is improved; and the yield of finished products is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe fitting stamping, and in particular relates to a stamping device for precision machining of pipe fittings. Background Art

[0002] Stamping is a metal processing method that uses dies and presses to apply external force to metal sheets to cause them to undergo plastic deformation or separation in order to obtain workpieces of desired shapes and sizes. Among them, the expansion of pipe fittings is also mostly processed by stamping.

[0003] The invention with publication number CN118558825B discloses an automobile pipe stamping equipment, which relates to the technical field of pipe stamping, and comprises a fuselage, a base is arranged on the support seat of the fuselage, a pressing plate is arranged above the base, a pressing head 1 and a pressing head 2 are arranged between the pressing plate and the base, the bottoms of the pressing head 1 and the pressing head 2 are fixedly connected to the base, a fixing bar 1 and a fixing bar 2 are arranged on the lower bottom surface of the pressing plate, and a clamping block 1 and a clamping block 2 are respectively slidably arranged on the side of the fixing bar 1 and the fixing bar 2 close to the pressing plate, and the clamping block 1 comprises a curved portion, a sliding portion and a block portion, A connecting plate is provided on one side of the block-shaped portion of the clamping block one, a spring is provided on one side of the block-shaped portion of the clamping block one, a fixing plate is provided at one end of the spring one, one side of the fixing plate is fixedly connected to the connecting plate, and one side of the connecting plate is provided with an inner cylinder. In this invention, the degree of automation is improved, the stamping efficiency is improved, and it is suitable for continuous stamping operations. However, in the actual stamping process, since the pipe fittings are all hollow structures inside, during the vertical expansion stamping process, the pipe fittings are easily deformed in the vertical direction, thereby affecting the quality of the finished product. Therefore, improvements are needed. Summary of the invention

[0004] The purpose of the present invention is to propose a punching device for precision machining of pipe fittings in order to solve the problem that during the vertical expansion punching process, the pipe fittings are easily deformed in the vertical direction, thereby affecting the quality of the finished product.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A punching device for precision machining of pipe fittings, comprising a base table, a side bracket connected to the top of the base table, a punching rod connected to the side bracket, an auxiliary punching assembly connected to the bottom of the punching rod, a fixed box connected to the top of the base table, a rotating table rotatably connected to the top of the fixed box, a conversion assembly arranged around the rotating table, a support plate connected to the outer peripheral side of the fixed box, and a blanking buffer assembly arranged at the bottom of the support plate; The auxiliary stamping assembly includes a stamping plate for driving the pipe fitting to move, a fixed tube is connected to the bottom of the stamping plate, two symmetrically arranged moving screws are rotatably connected inside the fixed tube, and the same connecting shaft is connected between the two moving screws, a screw seat is threadedly connected to the outer surface of the moving screw, a first connecting rod is hinged to the outer peripheral side of the screw seat, and a rotating rod is hinged to the end of the first connecting rod away from the screw seat, and the end of the rotating rod away from the screw seat extends to the outside of the fixed tube and is hinged to an outer support plate, which is used to support the inner wall of the pipe fitting from the inside and cooperate with the stamping plate to drive the pipe fitting to move downward for stamping operation.

[0006] As a further description of the above technical solution: The top of the stamping plate is connected to the bottom of the stamping rod, a plurality of grooves are provided on the outer peripheral side of the fixed tube, and the plurality of grooves are distributed in a circular array along the axis of the fixed tube. The rotating rod is rotatably connected to the grooves through a rotating shaft, and sliding holes are provided on opposite sides of the two outer support plates, and the same connecting sliding rod is slidably connected in the two sliding holes.

[0007] As a further description of the above technical solution: A fixed motor is fixedly installed on the top of the stamping plate through a first mounting seat, and the ends of the two movable screws that face away from each other are rotatably connected to the inner wall of the fixed tube, and one of the movable screws is connected to one end of the output shaft of the fixed motor at one end close to the fixed motor. A protective shell is connected to the top of the stamping plate, and the fixed motor is located inside the protective shell. The two movable screws are symmetrically arranged along the center position of the connecting shaft, and the thread directions of the two movable screws are opposite.

[0008] As a further description of the above technical solution: The conversion assembly includes a plurality of fixed rings distributed in a circular array, wherein the side of the fixed ring close to the rotating table is connected to the outer peripheral side of the rotating table through a connecting rod, and a plurality of reciprocating screws distributed in a circular array are rotatably connected inside the fixed ring, and a movable seat is threadedly connected to the outer surface of one end of the reciprocating screw away from the fixed ring, and a plurality of flexible friction wheels distributed in a linear array in the vertical direction are connected to the side of the movable seat away from the reciprocating screw for fitting and limiting the position of the pipe fitting.

[0009] As a further description of the above technical solution: One end of the reciprocating screw away from the moving seat extends outside the fixed ring and is connected to the transmission gear, and the bottom of multiple transmission gears is meshed and connected with a driving gear ring, and the driving gear ring is rotatably connected to the outer surface of the fixed ring. Two symmetrically arranged telescopic rods are connected to the side of the moving seat close to the reciprocating screw, and one end of the telescopic rod away from the moving seat is connected to the inner wall of the fixed ring.

[0010] As a further description of the above technical solution: The bottom of the connecting rod is connected to a connecting seat, and a driving shaft is rotatably connected in the connecting seat. The end of the driving shaft away from the fixed ring is connected to the second gear, and the top of the fixed box is connected to a half-toothed ring. The second gear can be meshed with the half-toothed ring during rotation, and the end of the driving shaft away from the second gear is connected to the first gear, and the bottom of the first gear is meshed with the driving gear ring.

[0011] As a further description of the above technical solution: The blanking buffer assembly includes a blanking tube, which is connected to the bottom of a support plate. A blanking trough is provided on the top of the support plate. The blanking trough and the axis of the blanking tube are located on the same axis. A plurality of fixed seats distributed in a circular array are connected around the bottom of the blanking tube. A clamp is rotatably connected inside the fixed seat. A second connecting rod is hingedly connected to one end of the clamp close to the blanking tube. A sliding rod is hingedly connected to one end of the second connecting rod away from the clamp. A fixed sleeve is slidably connected to the side of the sliding rod away from the second connecting rod. The fixed sleeve is connected to the blanking tube.

[0012] As a further description of the above technical solution: The outer surface of one end of the sliding rod close to the second connecting rod is connected to the limiting plate, and the outer surface of the sliding rod is sleeved with a return spring, and the two ends of the return spring are respectively connected to the fixed sliding sleeve and the limiting plate.

[0013] As a further description of the above technical solution: One end of the sliding rod away from the second connecting rod is connected to a fitting plate, and the bottom of the fitting plate is fitted with the fixed sliding sleeve.

[0014] As a further description of the above technical solution: An operation panel is connected to the side wall of the base platform, a stamping die is connected to the top of the base platform, and the stamping die is located directly below the stamping rod. A driving motor is fixedly installed in the fixed box through a second mounting seat, and one end of the driving motor output shaft is connected to a rotating shaft, and one end of the rotating shaft away from the driving motor extends to the outside of the fixed box and is connected to the bottom of the rotating platform.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, an auxiliary stamping assembly is provided. When the bottom of the stamping plate fits with the top of the pipe fitting, the fixed motor drives the outer support plate to expand outward and support and limit the inner wall of the pipe fitting through the moving screw, the screw seat, the first connecting rod and the rotating rod. After that, the stamping rod drives the pipe fitting downward through the stamping plate and the outer support plate. During this process, the flexible friction wheel rotates and provides a vertical guiding effect, and makes the pipe fitting contact with the stamping die to complete the stamping. The support of the inner wall of the pipe fitting by the outer support plate can improve the vertical pressure resistance of the pipe fitting, reduce the possibility of deformation of the pipe fitting during the stamping process, thereby improving the quality of the finished pipe fitting and improving the yield rate of the finished product.

[0016] 2. In the present invention, by setting a conversion component, during the feeding process, the fixed ring, the moving seat and the flexible friction wheel drive the pipe to move. At the same time, the connecting rod, the second gear, the half-toothed ring, the second gear, the driving shaft, the first gear, the driving gear ring, the transmission gear, the reciprocating screw, the telescopic rod and the moving seat drive the flexible friction wheel to move inward and gradually fit the outer wall of the pipe to limit the position. The multiple flexible friction wheels limit the pipe by friction. After the stamping is completed, the fixed ring drives the transmission gear to continue to rotate through the half-toothed ring, the second gear, the first gear and the driving gear ring. The gear drives the reciprocating screw to rotate, and the reciprocating screw drives the moving seat to gradually reset, and the moving seat drives the flexible friction wheel to release the limit on the finished pipe fittings and make the finished pipe fittings fall into the blanking trough to complete automatic unloading. Through the setting of multiple stations, multiple operations can be completed at the same time to improve processing efficiency, and through mechanical transmission, automatic positioning, clamping and automatic unloading of pipe fittings can be realized, which improves the overall automation level of the device, and the setting of the flexible friction wheel can assist in guiding the stamping direction of the pipe fittings while limiting the position of the pipe fittings, thereby improving the quality of the finished product.

[0017] 3. In the present invention, by setting a falling buffer component, when the finished pipe fittings fall onto the clamping jaws, the impact force will be applied to the clamping jaws, causing the clamping jaws to expand outward and absorb the impact force of the finished pipe fittings to slow down their falling speed. At the same time, the falling opening will become larger, and then the finished pipe fittings will fall into a collection box placed outside. By absorbing the impact force of the finished pipe fittings, the falling speed of the finished pipe fittings will be slowed down, the collision wear of the finished pipe fittings during falling and collection will be reduced, and the damage rate of the finished products will be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure from another viewing angle of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the auxiliary stamping assembly of the present invention; Figure 4 It is a partial three-dimensional structural schematic diagram of the auxiliary stamping assembly of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram of part A in the middle; Figure 6 It is a schematic diagram of the three-dimensional structure of the conversion component of the present invention; Figure 7 It is a schematic diagram of a partial three-dimensional structure of the conversion assembly of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram of part B in the middle; Fig. 9 It is a three-dimensional structural schematic diagram of the material drop buffer assembly and the support plate of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the material drop buffer assembly of the present invention.

[0019] Legend: 1. Base table; 2. Operation panel; 3. Side bracket; 4. Punching rod; 5. Auxiliary punching assembly; 501. Punching plate; 502. Fixed motor; 503. Fixed pipe; 504. External support plate; 505. Connecting slide bar; 506. Rotating rod; 507. Connecting shaft; 508. Moving lead screw; 509. First connecting rod; 510. Lead screw seat; 511. Trough; 6. Blanking buffer assembly; 601. Blanking pipe; 602. Clamping claw; 603. Fixed seat; 604. Second connecting rod; 605. Limiting plate; 60 6. reset spring; 607. sliding rod; 608. fitting plate; 609. fixed sleeve; 7. rotating table; 8. conversion assembly; 801. fixed ring; 802. moving seat; 803. flexible friction wheel; 804. transmission gear; 805. driving gear ring; 806. half gear ring; 807. first gear; 808. connecting seat; 809. second gear; 810. telescopic rod; 811. reciprocating screw; 9. connecting rod; 10. support plate; 11. driving motor; 12. fixed box; 13. stamping die. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 10 , the present invention provides a technical solution: A stamping device for precision machining of pipe fittings comprises a base platform 1, a side bracket 3 is connected to the top of the base platform 1, a stamping rod 4 is connected to the side bracket 3, an auxiliary stamping assembly 5 is connected to the bottom of the stamping rod 4, a fixed box 12 is connected to the top of the base platform 1, a rotating table 7 is rotatably connected to the top of the fixed box 12, a conversion assembly 8 is arranged around the rotating table 7, a support plate 10 is connected to the outer peripheral side of the fixed box 12, a blanking buffer assembly 6 is arranged at the bottom of the support plate 10, an operation panel 2 is connected to the side wall of the base platform 1, a stamping die 13 is connected to the top of the base platform 1, the stamping die 13 is located directly below the stamping rod 4, a driving motor 11 is fixedly installed in the fixed box 12 through a second mounting seat, one end of the output shaft of the driving motor 11 is connected to a rotating shaft, and the end of the rotating shaft away from the driving motor 11 extends to the outside of the fixed box 12 and is connected to the bottom of the rotating table 7.

[0022] The auxiliary stamping assembly 5 includes a stamping plate 501 for driving the pipe fitting to move, a fixed tube 503 is connected to the bottom of the stamping plate 501, two symmetrically arranged moving screws 508 are rotatably connected inside the fixed tube 503, and the same connecting shaft 507 is connected between the two moving screws 508, the outer surface of the moving screw 508 is threadedly connected to a screw seat 510, and a first connecting rod 509 is hinged on the outer peripheral side of the screw seat 510, and the end of the first connecting rod 509 away from the screw seat 510 is hinged to a rotating rod 506, and the end of the rotating rod 506 away from the screw seat 510 extends to the outside of the fixed tube 503 and is hinged to an outer support plate 504, which is used to support the inner wall of the pipe fitting from the inside and cooperate with the stamping plate 501 to drive the pipe fitting to move downward for stamping operation, the top of the stamping plate 501 is connected to the bottom of the stamping rod 4, and the outer periphery of the fixed tube 503 A plurality of grooves 511 are provided on the side, and the plurality of grooves 511 are distributed in a circular array along the axis of the fixed tube 503. The rotating rod 506 is rotatably connected to the groove 511 through a rotating shaft. Sliding holes are provided on the opposite sides of the two outer support plates 504, and the same connecting sliding rod 505 is slidably connected in the two sliding holes. A fixed motor 502 is fixedly installed on the top of the stamping plate 501 through a first mounting seat. The ends of the two movable screws 508 that are away from each other are rotatably connected to the inner wall of the fixed tube 503, and one of the movable screws 508 is connected to one end of the output shaft of the fixed motor 502 at an end close to the fixed motor 502. A protective shell is connected to the top of the stamping plate 501, and the fixed motor 502 is located inside the protective shell. The two movable screws 508 are symmetrically arranged along the center position of the connecting shaft 507, and the thread directions of the two movable screws 508 are opposite.

[0023] The specific implementation method is as follows: by setting an auxiliary stamping assembly 5, when the bottom of the stamping plate 501 is in contact with the top of the pipe fitting, the fixed motor 502 drives the outer support plate to expand outward and support and limit the inner wall of the pipe fitting by moving the screw 508, the screw seat 510, the first connecting rod 509 and the rotating rod 506. After that, the stamping rod 4 drives the pipe fitting downward through the stamping plate 501 and the outer support plate 504. During this process, the flexible friction wheel 803 rotates and provides a guiding effect in the vertical direction, and makes the pipe fitting contact with the stamping die 13 to complete the stamping. The support of the inner wall of the pipe fitting by the outer support plate 504 can improve the vertical pressure resistance of the pipe fitting.

[0024] The conversion assembly 8 includes a plurality of fixed rings 801 distributed in a circumferential array, and the side of the fixed ring 801 close to the rotating table 7 is connected to the outer peripheral side of the rotating table 7 through a connecting rod 9. A plurality of reciprocating screws 811 distributed in a circumferential array are rotatably connected inside the fixed ring 801, and a moving seat 802 is threadedly connected to the outer surface of the end of the reciprocating screw 811 away from the fixed ring 801, and a plurality of flexible friction wheels 803 distributed in a linear array in the vertical direction are connected to the side of the moving seat 802 away from the reciprocating screw 811, which are used to fit and limit the pipe fitting, and the end of the reciprocating screw 811 away from the moving seat 802 extends outside the fixed ring 801 and is connected to a transmission gear 804, and the bottom of the plurality of transmission gears 804 is meshedly connected to a driving gear ring 80 5. The driving gear ring 805 is rotatably connected to the outer surface of the fixed ring 801. Two symmetrically arranged telescopic rods 810 are connected to one side of the movable seat 802 close to the reciprocating screw 811. One end of the telescopic rod 810 away from the movable seat 802 is connected to the inner wall of the fixed ring 801. The bottom of the connecting rod 9 is connected to a connecting seat 808. The connecting seat 808 is rotatably connected with a driving shaft. The end of the driving shaft away from the fixed ring 801 is connected to a second gear 809. The top of the fixed box 12 is connected to a semi-toothed ring 806. The second gear 809 can be meshed with the semi-toothed ring 806 during rotation. The end of the driving shaft away from the second gear 809 is connected to a first gear 807. The bottom of the first gear 807 is meshed with the driving gear ring 805.

[0025] The specific implementation method is as follows: by setting the conversion component 8, during the feeding process, the fixed ring 801, the moving seat 802 and the flexible friction wheel 803 drive the pipe to move, and at the same time, the connecting rod 9, the second gear 809, the half-toothed ring 806, the second gear 809, the driving shaft, the first gear 807, the driving gear ring 805, the transmission gear 804, the reciprocating screw 811, the telescopic rod 810 and the moving seat 802 drive the flexible friction wheel 803 to move inward and gradually fit the outer wall of the pipe. The multiple flexible friction wheels 803 limit the pipe by friction. After the stamping is completed, the fixed ring 801 is moved by the half-toothed ring Ring 806, second gear 809, first gear 807, and driving gear ring 805 drive transmission gear 804 to continue to rotate, transmission gear 804 drives reciprocating screw 811 to rotate, reciprocating screw 811 drives moving seat 802 to gradually reset, moving seat 802 drives flexible friction wheel 803 to release the limit on finished pipe fittings and make the finished pipe fittings fall into the blanking trough to complete automatic unloading. Through the setting of multiple stations, multiple operations can be completed at the same time, improving processing efficiency, and through mechanical transmission, automatic positioning, clamping and automatic unloading of pipe fittings can be realized, thereby improving the overall automation level of the device.

[0026] The material dropping buffer assembly 6 includes a material dropping pipe 601, which is connected to the bottom of the support plate 10. A material dropping groove is provided on the top of the support plate 10. The material dropping groove and the axis of the material dropping pipe 601 are located on the same axis. A plurality of fixed seats 603 distributed in a circumferential array are connected around the bottom of the material dropping pipe 601. A clamping jaw 602 is rotatably connected inside the fixed seat 603. The end of the clamping jaw 602 close to the material dropping pipe 601 is hinged to a second connecting rod 604. The end of the second connecting rod 604 away from the clamping jaw 602 is hinged to a sliding rod 607. The sliding rod The side of 607 away from the second connecting rod 604 is slidably connected with a fixed sleeve 609, and the fixed sleeve 609 is connected to the blanking tube 601. The outer surface of one end of the sliding rod 607 close to the second connecting rod 604 is connected to a limiting plate 605. A return spring 606 is sleeved on the outer surface of the sliding rod 607. The two ends of the return spring 606 are respectively connected to the fixed sleeve 609 and the limiting plate 605. The end of the sliding rod 607 away from the second connecting rod 604 is connected to a fitting plate 608, and the bottom of the fitting plate 608 is fitted with the fixed sleeve 609.

[0027] The specific implementation method is as follows: by setting a falling material buffer component 6, when the finished pipe fittings fall onto the clamping jaws 602, the impact force will be applied to the clamping jaws 602, so that the clamping jaws 602 will expand outward and absorb the impact force of the finished pipe fittings to slow down their falling speed. At the same time, the falling opening will become larger, and then the finished pipe fittings will fall into a collection box placed outside. By absorbing the impact force of the finished pipe fittings, the falling speed of the finished pipe fittings is slowed down, and the collision wear of the finished pipe fittings when falling and collecting is reduced.

[0028] Working principle: When in use, the staff controls the overall operation of the device through the operation panel 2, and the driving motor 11 drives the rotating table 7 to rotate 90 degrees periodically, and then stops for a certain period of time, and the driving motor 11 is a self-locking motor. In actual use, the staff places the pipe fitting in the fixing ring 801 opposite to the side bracket 3, and the bottom of the pipe fitting fits with the top of the support plate 10, and the fixing ring 801, the moving seat 802 and the flexible friction wheel 803 drive the pipe fitting to move. During the movement, the connecting rod 9 drives the second gear 809 to move on the half-toothed ring 806, so that the half-toothed ring 806 drives the second gear 809 to rotate, and the second gear 809 drives the driving shaft to rotate, the driving shaft drives the first gear 807 to rotate, the first gear 807 drives the driving gear ring 805 to rotate, the driving gear ring 805 drives the transmission gear 804, the transmission gear 804 drives the reciprocating screw 811 to rotate, the reciprocating screw 811 cooperates with the telescopic rod 810 to drive the moving seat 802 to move toward the inside of the fixed ring 801, so that the moving seat 802 drives the flexible friction wheel 803 to move inward and gradually fits and limits the outer wall of the pipe fitting. When the fixed ring 801 moves to the bottom of the punching rod 4, the multiple flexible friction wheels 803 limit the pipe fitting by friction. At this time, the stamping die 13 is located directly below the pipe fitting.

[0029] Afterwards, the punching rod 4 drives the punching plate 501 to move downward, and the punching plate 501 drives the fixed tube 503 to move downward, and makes the fixed tube 503 and the outer support plate 504 enter the inner wall of the pipe fitting. When the bottom of the punching plate 501 is in contact with the top of the pipe fitting, the fixed motor 502 is started, and the fixed motor 502 drives the two movable screws 508 to rotate, and the movable screws 508 drive the screw seat 510 to move, and the screw seat 510 drives the first connecting rod 509 on the outer peripheral side to move, and the first connecting rod 509 drives the rotating rod 506 to rotate in the groove body 511, and the rotating rod 506 drives the outer support plate to expand outward and support and limit the inner wall of the pipe fitting. Afterwards, the punching rod 4 drives the pipe fitting downward through the punching plate 501 and the outer support plate 504. During this process, the flexible friction wheel 803 rotates to make the pipe fitting contact with the stamping die 13 to complete the stamping.

[0030] After the stamping is completed, the stamping plate 501 cooperates with the outer support plate 504 to drive the pipe to return to its original position. After that, the fixed motor 502 rotates in the opposite direction, so that the outer support plate 504 shrinks and separates from the inner wall of the pipe. The driving motor 11 drives the fixed ring 801 to continue to rotate through the rotating table 7. The fixed ring 801 drives the transmission gear 804 to continue to rotate through the semi-toothed ring 806, the second gear 809, the first gear 807, and the driving gear ring 805. The transmission gear 804 drives the reciprocating screw 811 to rotate, and the reciprocating screw 811 drives the moving seat 802 to gradually return to its original position. The moving seat 802 drives the flexible The friction wheel 803 releases the limit on the finished pipe fittings, and the fixed ring 801 drives the finished pipe fittings to move on the support plate 10. When the finished pipe fittings move to the blanking trough, the finished pipe fittings fall into the blanking tube 601 through the blanking trough. The finished pipe fittings move downward under the action of their own gravity. When the finished pipe fittings fall onto the clamping jaw 602, the impact force will be applied to the clamping jaw 602, making the lower drop opening larger. After that, the finished pipe fittings will fall into the collection box placed outside. After that, the clamping jaw 602 will be reset under the action of the second connecting rod 604, the sliding rod 607, the limit plate 605 and the reset spring 606.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A punching device for precision machining of pipe fittings, comprising a base platform (1), the top of the base platform (1) being connected to a side bracket (3), characterized in that: The side bracket (3) is connected to a punching rod (4), the bottom of the punching rod (4) is connected to an auxiliary punching assembly (5), the top of the base platform (1) is connected to a fixed box (12), the top of the fixed box (12) is rotatably connected to a rotating table (7), the rotating table (7) is provided with conversion assemblies (8) around it, the outer peripheral side of the fixed box (12) is connected to a support plate (10), and the bottom of the support plate (10) is provided with a blanking buffer assembly (6); The auxiliary stamping assembly (5) comprises a stamping plate (501) for driving the pipe fitting to move, the stamping plate (501) having a fixed tube (503) connected to the bottom thereof, the fixed tube (503) being internally rotatably connected to two symmetrically arranged movable lead screws (508), and the two movable lead screws (508) being connected to the same connecting shaft (507), the outer surface of the movable lead screw (508) being threadedly connected to a lead screw seat (510), the outer peripheral side of the lead screw seat (510) being hinged to a first connecting rod (509), the end of the first connecting rod (509) away from the lead screw seat (510) being hinged to a rotating rod (506), the end of the rotating rod (506) away from the lead screw seat (510) extending to the outside of the fixed tube (503) and being hinged to an outer support plate (504), for supporting the inner wall of the pipe fitting from the inside and cooperating with the stamping plate (501) to drive the pipe fitting to move downward for stamping operation.

2. A punching device for precision machining of pipe fittings according to claim 1, characterized in that: The top of the punching plate (501) is connected to the bottom of the punching rod (4); a plurality of grooves (511) are provided on the outer peripheral side of the fixed tube (503); the plurality of grooves (511) are distributed in a circular array along the axis of the fixed tube (503); the rotating rod (506) is rotatably connected to the grooves (511) via a rotating shaft; sliding holes are provided on opposite sides of the two outer support plates (504); and the same connecting sliding rod (505) is slidably connected in the two sliding holes.

3. A punching device for precision machining of pipe fittings according to claim 1, characterized in that: A fixed motor (502) is fixedly mounted on the top of the stamping plate (501) via a first mounting seat; the ends of the two movable lead screws (508) facing away from each other are rotatably connected to the inner wall of the fixed tube (503); and one end of the movable lead screws (508) close to the fixed motor (502) is connected to one end of the output shaft of the fixed motor (502); a protective housing is connected to the top of the stamping plate (501); the fixed motor (502) is located inside the protective housing; the two movable lead screws (508) are symmetrically arranged along the center position of the connecting shaft (507), and the thread directions of the two movable lead screws (508) are opposite.

4. A punching device for precision machining of pipe fittings according to claim 1, characterized in that: The conversion assembly (8) comprises a plurality of fixed rings (801) distributed in a circumferential array, wherein a side of the fixed ring (801) close to the rotating table (7) is connected to the outer circumferential side of the rotating table (7) via a connecting rod (9), a plurality of reciprocating screws (811) distributed in a circumferential array are rotatably connected inside the fixed ring (801), a moving seat (802) is threadedly connected to an outer surface of one end of the reciprocating screw (811) away from the fixed ring (801), and a plurality of flexible friction wheels (803) distributed in a linear array in a vertical direction are connected to a side of the moving seat (802) away from the reciprocating screw (811) for fitting and limiting the position of the pipe fitting.

5. A punching device for precision machining of pipe fittings according to claim 4, characterized in that: One end of the reciprocating screw (811) away from the moving seat (802) extends outside the fixed ring (801) and is connected to the transmission gear (804), and the bottoms of the plurality of transmission gears (804) are meshedly connected with a driving gear ring (805), and the driving gear ring (805) is rotatably connected to the outer surface of the fixed ring (801), and one side of the moving seat (802) close to the reciprocating screw (811) is connected to two symmetrically arranged telescopic rods (810), and one end of the telescopic rod (810) away from the moving seat (802) is connected to the inner wall of the fixed ring (801).

6. A punching device for precision machining of pipe fittings according to claim 5, characterized in that: The bottom of the connecting rod (9) is connected to a connecting seat (808), a driving shaft is rotatably connected inside the connecting seat (808), an end of the driving shaft away from the fixed ring (801) is connected to a second gear (809), the top of the fixed box (12) is connected to a semi-toothed ring (806), the second gear (809) can be meshed with the semi-toothed ring (806) during rotation, and an end of the driving shaft away from the second gear (809) is connected to a first gear (807), the bottom of the first gear (807) is meshed with the driving gear ring (805).

7. A punching device for precision machining of pipe fittings according to claim 1, characterized in that: The material dropping buffer assembly (6) comprises a material dropping tube (601), wherein the material dropping tube (601) is connected to the bottom of the support plate (10), and a material dropping groove is provided on the top of the support plate (10), wherein the material dropping groove and the axis of the material dropping tube (601) are located on the same axis, and the bottom of the material dropping tube (601) is connected to a plurality of fixed seats (603) distributed in a circular array around the bottom, and a clamping jaw (602) is rotatably connected inside the fixed seat (603), and an end of the clamping jaw (602) close to the material dropping tube (601) is hinged to a second connecting rod (604), and an end of the second connecting rod (604) away from the clamping jaw (602) is hinged to a sliding rod (607), and a side of the sliding rod (607) away from the second connecting rod (604) is slidably connected to a fixed sliding sleeve (609), and the fixed sliding sleeve (609) is connected to the material dropping tube (601).

8. A punching device for precision machining of pipe fittings according to claim 7, characterized in that: The outer surface of one end of the sliding rod (607) close to the second connecting rod (604) is connected to a limiting plate (605), and a return spring (606) is sleeved on the outer surface of the sliding rod (607), and the two ends of the return spring (606) are respectively connected to the fixed sliding sleeve (609) and the limiting plate (605).

9. A punching device for precision machining of pipe fittings according to claim 7, characterized in that: One end of the sliding rod (607) away from the second connecting rod (604) is connected to a fitting plate (608), and the bottom of the fitting plate (608) fits with the fixed sliding sleeve (609).

10. A punching device for precision machining of pipe fittings according to claim 1, characterized in that: The side wall of the base platform (1) is connected to an operation panel (2), the top of the base platform (1) is connected to a punching die (13), the punching die (13) is located directly below the punching rod (4), a driving motor (11) is fixedly mounted in the fixed box (12) via a second mounting seat, one end of the output shaft of the driving motor (11) is connected to a rotating shaft, and one end of the rotating shaft away from the driving motor (11) extends to the outside of the fixed box (12) and is connected to the bottom of the rotating platform (7).

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