Pipeline elbow punch forming die

Abstract

The utility model provides a pipeline elbow punch forming die, which belongs to the technical field of pipeline elbow processing and comprises a processing table, a top frame arranged above the processing table, an upper die arranged at the bottom of the top frame through an air cylinder, a lower die base fixedly mounted at the top of the processing table, and a positioning frame slidably arranged in an inner cavity of the lower die base. And the side wall of the positioning frame is uniformly provided with bounce-stopping insertion holes, the pipeline on the lower die is punched through the upper die, so that the pipeline is bent, in the process, the bounce-stopping pieces sequentially slide into the multiple bounce-stopping insertion holes till the pipeline is bent to the specified bending degree, the bounce-stopping pieces are clamped into the corresponding bounce-stopping insertion holes along with the bounce-back reset assemblies, and the bounce-stopping pieces are clamped into the corresponding bounce-stopping insertion holes along with the bounce-back reset assemblies. And therefore, the safety of the taking-out process after the pipeline elbow is machined is guaranteed, the lower die is prevented from being bounced by the elastic force of the elastic assembly, the machined pipeline is protected, bouncing and falling are avoided, and meanwhile, nearby operators are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe elbow processing, and specifically relates to a stamping die for forming pipe elbows. Background Technique

[0002] In a pipeline system, an elbow is a pipe fitting that changes the direction of the pipeline. Classified by angle, there are three most commonly used types: 45°, 90°, and 180°. In addition, according to engineering needs, it also includes other non-standard angle elbows such as 60°. The materials of elbows include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals, plastics, etc. During the process of processing pipe elbows, stamping is usually used for processing.

[0003] A stamping device for producing metal elbows disclosed in the related technology (publication number: CN219233619U) has the following disclosed technical solution: By setting a fixing component, rotating the turntable, the turntable drives the threaded rod to rotate, controlling the pressing block to move downward, and fixing the pipe through the mutual cooperation of the pressing block and the gasket. Adjust the height of the fixing block according to different sizes, which solves to a certain extent the problem that the existing stamping device cannot fix pipes of different sizes and improves the practicability.

[0004] In the above-mentioned disclosed technical solution, it is found that the following problems exist in the related technology: During the process of stamping and bending pipe elbows, in order to ensure the buffering effect during the stamping and bending process, an elastic buffer member is usually arranged below the lower die. However, after the upper die disengages from the surface of the lower die, the elastic buffer member will bounce up the pipe in the lower die through its elastic force, resulting in the pipe falling off and being prone to causing injury to nearby personnel. For this reason, we propose a new stamping die for forming pipe elbows.

[0005] It should be noted that the information disclosed in the above background technical part is only used to strengthen the understanding of the background technical part of this application, and therefore may include prior art information that does not constitute known to those of ordinary skill in the art. Content of the Utility Model

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. In order to solve the problem of the flying of pipe elbows after processing in the above-mentioned prior art, the utility model provides a stamping die for forming pipe elbows, which adopts a lower die base limiting mechanism combined with an elbow stamping mechanism to achieve the effect of protecting the bent pipe. The specific technical solution is as follows:

[0007] A stamping die for a pipe elbow, comprising a processing table, a top frame is arranged above the processing table, an upper die is arranged at the bottom of the top frame through a cylinder, a lower die base is fixedly installed at the top of the processing table, a lower die opposite to the upper die is arranged above the lower die base, and the lower die is connected to the lower die base through an elastic component. A positioning frame is slidably arranged in the inner cavity of the lower die base, anti-elastic jacks are evenly arranged on the side wall of the positioning frame, an anti-elastic member corresponding to the anti-elastic jacks is arranged below the bottom of the lower die, and the anti-elastic member is arranged at the bottom of the elastic component through a rebound reset component.

[0008] In the above technical solution, the elastic component includes a first movable column fixedly installed at the bottom of the lower die. The other end of the first movable column is fixedly installed with a limiting plate. The first movable column penetrates through the top of the lower die base and extends into the inner cavity. A first elastic member is arranged between the lower die and the lower die base, and the first elastic member is sleeved outside the first movable column.

[0009] The rebound reset component includes a fixed seat fixedly installed at the bottom of the limiting plate. A second elastic member is arranged between the fixed seat and the anti-elastic member. The second elastic member can be a compression spring. One end of a movable rod is fixedly installed on the side wall of the anti-elastic member opposite to the fixed seat. The other end of the movable rod penetrates through the side wall of the fixed seat and extends into the inner cavity, and the second elastic member is sleeved outside the movable rod.

[0010] The anti-elastic member is quadrangular pyramid-shaped.

[0011] Support columns are evenly embedded and installed in the inner cavity of the lower die base. An electric telescopic member is embedded and installed in the inner cavity of one of the support columns, and the movable end of the electric telescopic member is fixedly installed on the side wall of the positioning frame.

[0012] One end of a guide rod is fixedly installed on the side wall of the positioning frame away from the limiting plate. The other end of the guide rod sequentially penetrates through the inner cavity of the support column and the side wall of the lower die base and extends to.

[0013] Movable seats are symmetrically and slidably arranged at the top of the processing table. A support die is rotatably arranged at the top of the movable seat, and the two support dies are symmetrically arranged on both sides of the lower die. A displacement component for adjusting the position of the movable seat is arranged on the processing table.

[0014] The displacement component includes a driving groove opened at the top of the processing table. A lead screw is rotatably arranged in the inner cavity of the driving groove. Adjusting seats are symmetrically and threadedly connected to the outer wall of the lead screw, and the adjusting seats are fixedly installed at the bottom of the movable seat.

[0015] A rotary spring-back mechanism for driving the support die to reset is provided at the top of the movable seat.

[0016] The rotary spring-back mechanism includes a second movable column penetrating the top of the movable seat, and the second movable column is offset toward the side of the lower die. A force-receiving block is fixedly installed at the top end of the second movable column, and a third elastic member is provided between the force-receiving block and the movable seat. The third elastic member is sleeved outside the second movable column.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: This pipe elbow stamping and forming die:

[0018] First, when stamping the elbow of the pipe, the anti-bounce member slides through the inside of a plurality of anti-bounce jacks in sequence until the pipe is bent to the specified curvature. Then, the anti-bounce member is clamped inside the corresponding anti-bounce jack with the spring-back reset assembly, thereby ensuring the safety of the process of removing the processed pipe elbow, preventing the elastic force of the elastic assembly from bouncing up the lower die, further protecting the processed pipe from bouncing and falling, and at the same time protecting the nearby operators.

[0019] Second, during the process of the upper die moving downward to the lower die to bend the pipe, a buffering effect is achieved through the elastic deformation of the first elastic member, thereby protecting the process of stamping the pipe elbow. After processing, the lower die is reset by the first elastic member, which brings convenience to the operation process of relevant personnel.

[0020] Third, when resetting the lower die after removing the elbow pipe, the movable end of the electric telescopic member drives the positioning frame to move away from the anti-bounce member, causing the anti-bounce member to disengage from the anti-bounce jack. Then, the elastic force of the first elastic member is used to drive the lower die to reset, which brings convenience to the operation process of relevant personnel.

[0021] Fourth, the stability of the moving direction of the positioning frame is ensured by the guide rod parallel to the electric telescopic member, preventing position deviation, and thus ensuring the stability of the lower die during clamping and positioning.

[0022] Fifth, the positions of the two movable seats are adjusted simultaneously through the displacement assembly, thereby adjusting the positions of the two support dies. According to the specification requirements of the pipe bending, the positions of the two support dies are adjusted, and thus pipe elbows of different specifications can be manufactured, which brings convenience to the operation process of relevant personnel.

[0023] Sixth, strengthening columns are fixedly embedded in the inner cavities of the movable seat and the lower die base. The strength of the movable seat and the lower die base is ensured by the strengthening columns. After bending the pipe, the third elastic member drives the force-receiving block to reset the support die, which brings convenience to the operation process of relevant personnel. Description of the Drawings

[0024] Figure 1Schematic structural diagram of a stamping and forming die for a pipe elbow of the present utility model;

[0025] Figure 2 Exploded schematic view of the structure of a stamping and forming die for a pipe elbow of the present utility model Figure 1 ;

[0026] Figure 3 Exploded schematic view of the structure of a stamping and forming die for a pipe elbow of the present utility model Figure 2 ;

[0027] Figure 4 Partial sectional view of the structure of the lower die base part of the present utility model Figure 1 ;

[0028] Figure 5 Partial sectional view of the structure of the lower die base part of the present utility model Figure 2 ;

[0029] Figure 6 Partial sectional view of the structure of the limit component part of the present utility model;

[0030] Figure 7 is Figure 5 Local enlarged view of part A of;

[0031] Among them, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names in is: 1 - processing table, 2 - top frame, 3 - lower die base, 4 - movable seat, 5 - lower die, 6 - support die, 7 - upper die, 8 - first movable column, 9 - second movable column, 10 - support rod, 11 - machine cover, 12 - first elastic member, 13 - drive groove, 14 - third elastic member, 15 - bracket, 16 - guide seat, 17 - adjustment seat, 18 - guide groove, 19 - cylinder, 20 - force-receiving block, 21 - motor, 22 - rotating shaft, 23 - slide bar, 24 - lead screw, 25 - guide rod, 26 - electric telescopic member, 27 - positioning frame, 28 - support column, 29 - anti-elasticity jack, 30 - strengthening column, 31 - anti-elasticity member, 32 - limit plate, 33 - fixed seat, 34 - movable rod, 35 - second elastic member, 36 - anti-disengagement block. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] Next, in combination with specific implementation cases and attached Figures 1-7The present utility model will be further described, but the present utility model is not limited to these embodiments.

[0034] A stamping die for pipe elbows, comprising a processing table 1, and a top frame 2 is arranged above the processing table 1. One end of each of four support rods 10 is fixedly installed vertically at four corners of the processing table 1, and the upper ends of the four support rods 10 are fixedly at four corners of the lower surface of the top frame 2, and the four support rods 10 are arranged parallel to each other. The top frame 2 is fixed above the processing table 1 through the four support rods 10. A upper die 7 is arranged at the bottom of the top frame 2 through a cylinder 19. An installation hole penetrating the inner cavity is longitudinally opened on the upper surface of the top frame 2, and the cylinder barrel of the cylinder 19 is fixedly embedded inside the installation hole, so that the cylinder 19 and the top frame 2 are perpendicular to each other. The movable end of the cylinder 19 is downward and fixedly at the top of the upper die 7. The position of the upper die 7 is adjusted through the movable end of the cylinder 19.

[0035] A lower die base 3 is fixedly installed on the top of the processing table 1, and the lower die base 3 is vertically fixed at the central position above the processing table 1. A lower die 5 opposite to the upper die 7 is arranged above the lower die base 3, and the lower die 5 is connected to the lower die base 3 through an elastic component. The elastic component located between the lower die 5 and the lower die base 3 has a buffering and supporting effect on the lower die 5, so as to play a protective role in the process of pipe elbow processing.

[0036] A positioning frame 27 is slidably arranged in the inner cavity of the lower die base 3. Elastic stop holes 29 are evenly opened on the side wall of the positioning frame 27. The two positioning frames 27 are slidably embedded in the lower die base 3 in parallel, and the two positioning frames 27 are located on both sides of the elastic component. The upper and lower surfaces of the positioning frame 27 are attached to the inner wall of the lower die base 3 and slide left and right. A plurality of elastic stop holes 29 are continuously opened from top to bottom on the surface of the positioning frame 27. An elastic stop member 31 corresponding to the elastic stop holes 29 is arranged below the bottom of the lower die 5, and the elastic stop member 31 is arranged at the bottom of the elastic component through a spring-back reset component. Spring-back reset components are symmetrically arranged on both sides of the bottom of the elastic component, and the elastic stop member 31 is installed at the end of the spring-back reset component.

[0037] When stamping a pipe elbow, the pipe is placed inside the lower die 5, and then the solenoid valve of the air duct connected inside the cylinder 19 is opened, so that the movable end of the cylinder 19 drives the upper die 7 to move in the vertical direction, and the pipe on the lower die 5 is stamped through the upper die 7, thereby bending the pipe.

[0038] During this process, the elastic component at the bottom of the lower die 5 plays a buffering effect. At the same time, the bottom of the elastic component drives the anti-bouncing member 31 to move as the lower die 5 moves, so that the anti-bouncing member 31 slides through the inside of multiple anti-bouncing jacks 29 in sequence. Until the pipe is bent to the specified bend angle, at this time, the anti-bouncing member 31 is clamped inside the corresponding anti-bouncing jack 29 with the help of the rebound reset component.

[0039] Then, the upper die 7 is moved away from the lower die 5 by the movable end of the cylinder 19. At this time, the lower die 5 is in a stable position due to the clamping connection between the anti-bouncing member 31 and the anti-bouncing jack 29. After that, the bent pipe is taken out from the lower die 5, which ensures the safety of the process of taking out the pipe elbow after processing, avoids the elastic force of the elastic component from bouncing the lower die 5 up, and further plays a protective effect on the processed pipe. It prevents bouncing and falling, and at the same time plays a protective effect on the nearby operators.

[0040] After that, the positioning frame 27 inside the lower die base 3 is moved, so that the positioning frame 27 is moved away from the anti-bouncing member 31, and the lower die 4 is reset by the first elastic member 12, making the operation process more convenient.

[0041] Among them, the elastic component includes a first movable column 8 fixedly installed at the bottom of the lower die 5. The other end of the first movable column 8 is fixedly installed with a limiting plate 32. The first movable column 8 penetrates through the top of the lower die base 3 and extends into the inner cavity. The upper end of the first movable column 8 is vertically fixed to the bottom of the lower die 5. The lower end of the first movable column 8 passes through the upper surface of the lower die base 3 and extends into the lower die base 3, and the lower end of the first movable column 8 is vertically fixed to the upper surface of the limiting plate 32, so that the first movable column 8 slides inside the penetration of the upper surface of the lower die base 3.

[0042] A first elastic member 12 is arranged between the lower die 5 and the lower die base 3, and the first elastic member 12 is sleeved outside the first movable column 8. The first elastic member 12 can be a compression spring. The upper end of the first elastic member 12 is fixedly installed at the bottom of the lower die 5. The lower end of the first elastic member 12 is fixedly installed at the top of the lower die base 3, and the first elastic member 12 is movably sleeved outside the first movable column 8, so that the first elastic member 12 fits and slides telescopically on the outer wall of the first movable column 8.

[0043] During the process of the upper die 7 moving downward to the lower die 5 to bend the pipe, the elastic deformation of the first elastic member 12 plays a buffering effect, thus playing a protective effect on the process of stamping the pipe elbow. After processing, the lower die 5 is reset by the first elastic member 12, which brings convenience to the operation process of relevant personnel.

[0044] It should be noted that the spring-back reset assembly includes a fixed seat 33 fixedly installed at the bottom of the limit plate 32. The two fixed seats 33 are fixedly installed at the bottom of the limit plate 32 in parallel with each other, and the two fixed seats 33 respectively correspond to the two positioning frames 27. A second elastic member 35 is arranged between the fixed seat 33 and the anti-bounce member 31, and the second elastic member 35 can be a compression spring. One end of the second elastic member 35 is fixedly installed on the surface of the anti-bounce member 31, and the other end of the second elastic member 35 is fixed on the surface of the fixed seat 33.

[0045] One end of a movable rod 34 is fixedly installed on the side wall of the anti-bounce member 31 relative to the fixed seat 33. The other end of the movable rod 34 penetrates through the side wall of the fixed seat 33 and extends into the inner cavity. The end of the movable rod 34 located inside the fixed seat 33 is fixedly installed with an anti-disengagement block 36, and the second elastic member 35 is sleeved outside the movable rod 34. One end of the movable rod 34 is vertically fixed on the surface of the anti-bounce member 31, and the other end of the movable rod 34 penetrates through the side wall of the fixed seat 33 and extends into the interior and is vertically fixed on the surface of the anti-disengagement block 36. The movable rod 34 slides in the through hole on the side wall of the fixed seat 33. The second elastic member 35 can be a compression spring, and the second elastic member 35 is movably sleeved on the outer wall of the movable rod 34, so that the second elastic member 35 fits on the outer wall of the movable rod 34 and slides telescopically.

[0046] During the process of the lower die 5 being bent and stressed, the lower die 5 drives the two anti-bounce members 31 at the bottom of the limit plate 32 to move through the first movable column 8, so that the anti-bounce members 31 pass through a plurality of anti-bounce jacks 29 in sequence by the elastic force of the second elastic member 35. The quadrangular pyramid-shaped anti-bounce members 31 smoothly slide through a plurality of anti-bounce jacks 29 in sequence.

[0047] In addition, the anti-bounce member 31 is quadrangular pyramid-shaped. And the inclined surface of the quadrangular pyramid-shaped anti-bounce member 31 is an arc surface, which reduces the friction force of the contact surface, making the process of the anti-bounce member 31 sliding through the anti-bounce jack 29 more smooth.

[0048] In addition, support columns 28 are evenly embedded and installed in the inner cavity of the lower die base 3. An electric telescopic member 26 is embedded and installed in the inner cavity of one support column 28. The strength of the inner cavity of the lower die base 3 is increased by the plurality of support columns 28, thereby improving the bearing capacity of the lower die base 3. The electric telescopic member 26 can be an electric telescopic rod, and the electric telescopic rod 26 is fixedly embedded and installed inside one of the support columns 28.

[0049] The movable end of the electric telescopic member 26 is fixedly installed on the side wall of the positioning frame 27. The electric telescopic rod 26 is electrically connected to an external power supply through a guide. The movable end of the electric telescopic rod 26 drives the positioning frame 27 to slide on the inner wall of the lower die base 3, so as to adjust the relative position between the positioning frame 27 and the anti-bounce member 31.

[0050] When the lower die 3 is reset after the elbow pipe is taken out, the movable end of the electric telescopic member 26 drives the positioning frame 27 to move away from the anti-bounce member 31, so that the anti-bounce member 31 disengages from the anti-bounce jack 29. Then, the elastic force of the first elastic member 12 drives the lower die 3 to reset, thus bringing convenience to the operation process of relevant personnel.

[0051] Further, one end of the guide rod 25 is fixedly installed on the side wall of the positioning frame 27 away from the limit plate 32. The other end of the guide rod 25 sequentially passes through the inner cavity of the support column 28 and the side wall of the lower die base 3 and extends to. One end of the guide rod 25 is vertically fixed on the surface of the positioning frame 27, and the other end of the guide rod 25 sequentially passes through the inner cavity of the corresponding support column 28 and the side wall of the lower die base 3.

[0052] During the process of adjusting the position of the positioning frame 27 by the electric telescopic member 26, the positioning frame 27 drives the guide rod 25 to slide in the through hole at the same time. The guide rod 25 parallel to the electric telescopic member 26 ensures the stability of the moving direction of the positioning frame 27 and avoids position deviation, thus ensuring the stability of the lower die 5 during clamping and positioning.

[0053] The movable seats 4 are symmetrically and slidably arranged on the top of the processing table 1. The movable seats 4 are attached to the upper surface of the processing table 1 and slide. Two mutually parallel brackets 15 are fixedly installed on the top of the movable seats 4. Bearings are embedded in the opposite inner walls of the two brackets 15. One end of the rotating shaft 22 is embedded in the inside of the bearing, and the other end of the rotating shaft 22 is vertically fixed on the surface of the support die 6, so that the support die 6 rotates in the brackets 15 along with the rotating shaft 22.

[0054] The support die 6 is rotatably arranged on the top of the movable seat 4, and the two support dies 6 are symmetrically arranged on both sides of the lower die 5. A displacement component for adjusting the position of the movable seat 4 is arranged on the processing table 1. By the displacement component, the positions of the two movable seats 4 are adjusted at the same time, so that the positions of the two support dies 6 are adjusted. According to the specification requirements of the pipe bending, the positions of the two support dies 6 are adjusted, and thus pipe elbows of different specifications can be made, bringing convenience to the operation process of relevant personnel.

[0055] The displacement component includes a driving groove 13 opened on the top of the processing table 1. A lead screw 24 is rotatably arranged in the inner cavity of the driving groove 13. Bearings are embedded in the inner walls on both sides of the driving groove 13. The two ends of the lead screw 24 are respectively embedded in the inside of the two bearings. External threads with opposite threads and the same pitch are symmetrically opened on the outer wall of the lead screw 24 from the central position to both sides. The two adjusting seats 17 are respectively connected to the lead screw 24 through threaded through holes opened in the inner cavity. When the lead screw 24 rotates, the two adjusting seats 17 move relatively or away from each other.

[0056] The outer wall of the lead screw 24 is symmetrically threadedly connected with adjusting seats 17, and the adjusting seats 17 are fixedly installed at the bottom of the movable seat 4. On one side of the processing table 1, the motor 21 is fixed through a machine cover 11. The motor 21 is electrically connected to an external power supply through a wire. The output shaft of the motor 21 penetrates through the side wall of the processing table 1 and extends into the driving groove 13, and is fixedly connected to one end corresponding to the lead screw 24. The shape of the adjusting seat 17 corresponds to that of the driving groove 13, so that the adjusting seat 17 fits and slides on the inner wall of the driving groove 13.

[0057] When adjusting the positions of the two supporting molds 6, the motor 21 is connected to the power supply, so that the output shaft of the motor 21 drives the lead screw 24 to rotate. The two adjusting seats 17 symmetrically arranged outside the lead screw 24 drive the two movable seats 4 to move relatively, thereby adjusting the positions of the two supporting molds 6. Adjust according to the elbow specifications of the pipeline, which brings convenience to the operation process of relevant personnel.

[0058] A guiding groove 18 parallel to the driving groove 13 is opened on the processing table 1. A sliding rod 23 parallel to the lead screw 24 is fixedly embedded in the guiding groove 18. The guiding seat 16 is movably sleeved outside the sliding rod 23 and fits and slides on the inner wall of the guiding groove 18. The guiding seat 16 is fixedly installed at the bottom of the movable seat 4.

[0059] During the process of rotating the lead screw 24 to adjust the position of the supporting mold 6, the movable seat 4 drives the guiding seat 16 to fit and slide on the outer wall of the sliding rod 23 at the same time. Through the sliding rod 23 parallel to the lead screw 24, the stability of the moving direction of the supporting mold 6 is ensured, and position deviation is avoided, thereby ensuring the quality of pipeline elbow processing.

[0060] A rotary elastic return mechanism for driving the supporting mold 6 to reset is arranged at the top of the movable seat 4. Through the rotary elastic return mechanism, after the pipeline is taken out from the lower mold 5, the supporting mold 6 is rotated to the initial position.

[0061] The rotary elastic return mechanism includes a second movable column 9 penetrating through the top of the movable seat 4, and the second movable column 9 deviates towards the side of the lower mold 5. A force-bearing block 20 is fixedly installed at the top end of the second movable column 9, and a third elastic member 14 is arranged between the force-bearing block 20 and the movable seat 4. The third elastic member 14 is sleeved outside the second movable column 9.

[0062] The third elastic member 14 can be a compression spring. The upper end of the third elastic member 14 is fixed at the bottom of the force-bearing block 20. The force-bearing block 20 is a hemispherical support block, that is, the upper end of the third elastic member 14 is fixed at the bottom of the hemispherical force-bearing block 20. The lower end of the third elastic member 14 is fixed at the top of the movable seat 4. The third elastic member 14 is movably sleeved outside the second movable column 9, so that the third elastic member 14 fits and slides on the outer wall of the second movable column 9. That is, the third elastic member 14 is located at a position on the lower surface of the supporting mold 6 that deviates from the center and is close to the lower mold 5 along with the second movable column 9.

[0063] Reinforcing columns 30 are fixedly and embeddedly installed in the inner cavities of the movable seat 4 and the lower die base 3, ensuring the strength of the movable seat 4 and the lower die base 3 through the reinforcing columns 30. After the pipe is bent, the third elastic member 14 drives the force-receiving block 20 to reset the support die 6, thus facilitating the operation process of relevant personnel.

[0064] The working principle of a pipe elbow stamping and forming die in this embodiment is as follows: First, place the pipe to be processed inside the lower die 5 and the support die 6. Then, open the solenoid valve of the air duct connected to the inside of the cylinder 19, so that the movable end of the cylinder 19 drives the upper die 7 to move in the vertical direction, and the pipe on the lower die 5 is stamped by the upper die 7, thereby bending the pipe.

[0065] During this process, the lower die 5 drives the two anti-elastic members 31 at the bottom of the limit plate 32 to move through the first movable column 8, so that the anti-elastic members 31 pass through a plurality of anti-elastic jacks 29 in sequence through the elastic force of the second elastic member 35. Until the pipe is bent to the specified bend angle, the anti-elastic member 31 is clamped inside the corresponding anti-elastic jack 29. At the same time, the two support dies 6 on both sides rotate relative to each other as the pipe is bent, and the support die 6 applies a force to the force-receiving block 20 during the rotation process, causing the third elastic member 14 to elastically deform.

[0066] Then, the movable end of the cylinder 19 moves the upper die 7 away from the lower die 5, and the bent pipe is taken out from the lower die 5.

[0067] After that, the movable end of the electric telescopic member 26 drives the positioning frame 27 to move away from the anti-elastic member 31, so that the anti-elastic member 31 disengages from the anti-elastic jack 29, and then the first elastic member 12 drives the lower die 3 to reset by its elastic force. At the same time, the two support dies 6 on both sides also return to their initial positions through the elastic force of the third elastic member 14.

[0068] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0069] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0070] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0071] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe elbow stamping die, comprising a processing table (1), a top frame (2) being arranged above the processing table (1), characterized in that: An upper die (7) is arranged at the bottom of the top frame (2) through a cylinder (19); a lower die base (3) is fixedly installed on the top of the processing table (1); a lower die (5) opposite to the upper die (7) is arranged above the lower die base (3); and the lower die (5) is connected to the lower die base (3) through an elastic component; a positioning frame (27) is slidably arranged in the inner cavity of the lower die base (3); bullet-stopping holes (29) are evenly opened on the side walls of the positioning frame (27); a bullet-stopping member (31) corresponding to the bullet-stopping hole (29) is arranged below the bottom of the lower die (5); and the bullet-stopping member (31) is arranged at the bottom of the elastic component through a rebound reset component.

2. A pipe elbow stamping die according to claim 1, characterized in that: The elastic component comprises a first movable column (8) fixedly mounted on the bottom of the lower mold (5), a limiting plate (32) fixedly mounted on the other end of the first movable column (8), the first movable column (8) passes through the top of the lower mold base (3) and extends to the inner cavity, a first elastic member (12) is arranged between the lower mold (5) and the lower mold base (3), and the first elastic member (12) is sleeved on the outside of the first movable column (8).

3. A pipe elbow stamping die according to claim 2, characterized in that: The rebound reset assembly comprises a fixed seat (33) fixedly mounted on the bottom of the limiting plate (32), a second elastic member (35) is arranged between the fixed seat (33) and the spring-stop member (31), one end of a movable rod (34) is fixedly mounted on the side wall of the spring-stop member (31) relative to the fixed seat (33), the other end of the movable rod (34) passes through the side wall of the fixed seat (33) and extends to the inner cavity, and the second elastic member (35) is sleeved on the outside of the movable rod (34).

4. A pipe elbow stamping die according to claim 3, characterized in that: The bullet-stopping member (31) is in the shape of a quadrangular pyramid.

5. The pipe elbow stamping die according to claim 4, characterized in that: The inner cavity of the lower mold base (3) is evenly embedded with support columns (28), and the inner cavity of one of the support columns (28) is embedded with an electric telescopic component (26), and the movable end of the electric telescopic component (26) is fixedly mounted on the side wall of the positioning frame (27).

6. The pipe elbow stamping die according to claim 5, characterized in that: One end of a guide rod (25) is fixedly mounted on the side wall of the positioning frame (27) away from the limiting plate (32), and the other end of the guide rod (25) sequentially penetrates the inner cavity of the support column (28) and the side wall of the lower mold base (3) and extends to.

7. The pipe elbow stamping die according to claim 1, characterized in that: A movable seat (4) is symmetrically slidably arranged on the top of the processing table (1), a supporting mold (6) is rotatably arranged on the top of the movable seat (4), and two supporting molds (6) are symmetrically arranged on both sides of the lower mold (5), and a displacement component for adjusting the position of the movable seat (4) is arranged on the processing table (1).

8. The pipe elbow stamping die according to claim 7, characterized in that: The displacement assembly comprises a driving groove (13) opened on the top of the processing table (1), a lead screw (24) is rotatably arranged in the inner cavity of the driving groove (13), an outer wall of the lead screw (24) is symmetrically threadedly connected with an adjustment seat (17), and the adjustment seat (17) is fixedly mounted on the bottom of the movable seat (4).

9. The pipe elbow stamping die according to claim 8, characterized in that: The top of the movable seat (4) is provided with a rotation rebound mechanism for driving the supporting mold (6) to return to its original position.

10. A pipe elbow stamping die according to claim 9, characterized in that: The rotary rebound mechanism comprises a second movable column (9) penetrating the top of the movable seat (4), and the second movable column (9) is offset to one side of the lower mold (5), a force block (20) is fixedly installed on the top of the second movable column (9), and a third elastic member (14) is arranged between the force block (20) and the movable seat (4), and the third elastic member (14) is sleeved on the outside of the second movable column (9).

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