Full-automatic elbow and pipe bending integrated forming device and process

Abstract

The invention relates to the technical field of elbow and bent pipe forming devices, and provides a full-automatic elbow and bent pipe integrated forming device and technology.The full-automatic elbow and bent pipe integrated forming device comprises a left die and a right die, the left die and the right die are both in sliding connection with a frame body, and the left die and the right die are arranged at intervals and are each provided with a stamping groove; the stamping groove is located in the adjacent sides of the left die and the right die. The middle mold is in sliding connection with the frame body and located between the left mold and the right mold, and forming blocks are arranged on the two sides of the middle mold; the sliding direction of the middle die and the sliding direction of the left die are arranged in a crossed mode, and the middle die can slide away from the position between the left die and the right die, so that after the left die and / or the right die slide, the two semicircular bent pipes form an elbow bent pipe. By means of the technical scheme, after the middle die slides away from the left die and the right die, the left die and / or the right die slides, the two semicircular bent pipes can be in butt joint automatically to form the whole elbow pipe, automatic splicing of the punched semicircular bent pipes is achieved, manual operation is not needed, and production continuity is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of elbow and pipe forming devices, and specifically, to a fully automatic elbow and pipe integral forming device and process. Background Art

[0002] Elbows are pipe fittings used to change the direction of pipes and are widely used in various fields. They can be produced in a variety of ways, such as one-piece casting, straight pipe bending, or butt welding. For butt welding, the processing process can be roughly divided into: Prepare suitable fan ring sheet ( Figure 13 The leftmost component in the figure is placed in the corresponding die of the stamping machine and stamped into a semicircular elbow structure ( Figure 13 Finally, the two semicircular elbow structures are manually taken out, and the two are first aligned and spot welded to stabilize them with a welding gun, and then a special welding machine is used to accurately weld the welds to obtain a complete elbow ( Figure 13 ).

[0003] Because the above-mentioned stamping is basically a single-process and single-shot stamping, most of them use manual loading and unloading and cooperate with simple stamping structures to complete stamping manufacturing, which means that subsequent splicing, spot welding and welding processes and stamping processes also need to be completed manually, with poor accuracy. In addition, each process is relatively separated, and it is impossible to automatically splice after stamping to prepare for spot welding and fine welding. The production continuity needs to be improved. Summary of the Invention

[0004] To overcome the above-mentioned defects, an embodiment of the present invention provides a fully automatic elbow and pipe integrated forming device and process, which solves the technical problem in the related art that the stamping forming machine cannot automatically splice after stamping to prepare for spot welding and fine welding, and the production continuity needs to be improved.

[0005] According to one aspect, at least one embodiment of the present invention provides a fully automatic elbow and pipe integral forming device, comprising: frame; A left mold and a right mold, both of which are slidably connected to the frame, are arranged at intervals, and both have a stamping groove, and the stamping groove is located on adjacent sides of the left mold and the right mold; An intermediate mold is slidably connected to the frame and is located between the left mold and the right mold. Forming blocks are provided on both sides of the intermediate mold. The two forming blocks correspond to the two stamping grooves on the left mold and the right mold respectively. The forming blocks can push the sheet into the stamping groove and cooperate with the stamping groove to form a semicircular elbow. The sliding direction of the middle mold is cross-set with the sliding direction of the left mold, and the middle mold can slide away from between the left mold and the right mold, so that the two semicircular bends can be assembled into an elbow bend by sliding the left mold and the right mold closer.

[0006] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integrated forming device, wherein at least one end of the stamping groove has an opening, and a discharge lining plate is slidingly provided on the inner wall of the stamping groove and slides with the inner wall of the stamping groove. The discharge lining plate can abut against the side wall of the material sheet to cooperate with the forming block to form the material sheet into a semicircular bend pipe, and the discharge lining plate can also slide along the stamping groove to drive the semicircular bend pipe to move out of the opening.

[0007] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integrated forming device, wherein the middle die, the left die and the right die all slide horizontally, and the edges on both sides of the notch of the stamping groove are provided with lining guard bars protruding toward the central axis of the stamping groove, and the two lining guard bars respectively correspond one to one to slide with the two sides of the unloading inner lining plate, and the lining guard bars are used to limit the unloading inner lining plate from being separated from the stamping groove. The unloading inner lining plate can also form a welding space between the two unloading inner liners for exposing the splicing welds of the two semicircular bends when the semicircular bend and the unloading inner lining are moved out of the stamping groove, so that the two semicircular bends are welded into an elbow bend.

[0008] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integrated forming device, wherein the unloading lining plate slides along an arc path, and a driving rod is swingably provided in the left mold and the right mold, and the driving rod is fixedly connected to the unloading lining plate, and the driving rod can drive the unloading lining plate to slide along the central axis of the stamping groove.

[0009] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integrated forming device, wherein a magnetic strip is embedded on the surface of the unloading lining plate, and the magnetic strip is used to absorb the semicircular elbow.

[0010] For example, in at least one embodiment of the present invention, a fully automatic elbow and pipe integral forming device is provided, wherein the two stamping grooves are symmetrically arranged, and two groups of positioning posts are provided on each of the left die and the right die, and the positioning posts are located on adjacent sides of the left die and the right die, and the two groups of positioning posts are respectively arranged one by one on both sides of the extension direction of the stamping groove and are respectively used to position the two side edges of the sheet, and each group of positioning posts includes a plurality of positioning posts arranged along the extension direction of the stamping groove; A positioning area is formed between the two groups of positioning posts, and the positioning area is used to position the sheet at the notch of the stamping groove.

[0011] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe one-piece forming device, wherein a workbench is provided on the frame, the middle mold, the left mold and the right mold are all slidably connected to the top surface of the workbench, and the stamping groove is coplanar with the top surface of the workbench away from the opening end, so that one end of the sheet can be positioned in contact with the top surface of the workbench.

[0012] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integrated forming device, wherein the sliding direction of the middle mold is perpendicular to the sliding direction of the left mold, and both sides of the middle mold have two groups of positioning holes that correspond one to one and are located on both sides of the forming block, each group of the positioning holes includes a plurality of the positioning holes (501) arranged along the extension direction of the forming block, and the positioning columns are positioned in a one-to-one corresponding manner.

[0013] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integrated forming device, wherein a punching head is provided at the top of the frame for lifting and lowering, and the bottom periphery of the punching head has a punching slope extending obliquely toward the axis center, and the intermediate mold is located below the punching head, and the forming blocks are provided on both sides of the intermediate mold along the horizontal sliding, and the two forming blocks have pressure-bearing slopes that can slide with the punching slopes. The punching head is configured to push the two punching slopes with the help of the punching slopes after descending, so that the two forming blocks extend into the punching groove and form a semicircular elbow.

[0014] A fully automatic elbow and pipe integral forming process, using the above-mentioned fully automatic elbow and pipe integral forming device, is characterized by comprising the following steps: S1. Loading: Insert two blanks into the positioning areas of the left and right molds respectively, and make one end of the blanks contact the top surface of the workbench; S2. Stamping: Move the left and right dies until the two blanks abut against the forming blocks, and lower the punch head to move the forming blocks horizontally outwards and press the blanks to move into the punching groove. The semicircular elbow is formed by the cooperation of the forming blocks and the discharge lining plate. S3. Unloading: The forming block moves to the side away from the unloading lining plate until it is reset, and the middle mold is moved out from between the left mold and the right mold. The left mold and the right mold are moved toward each other until they are connected, until the two semicircular bends form an elbow. The unloading lining plates of the left mold and the right mold are synchronously driven to slide along the stamping groove, the elbow is moved and welded, and finally the left mold, right mold and middle mold are moved and reset.

[0015] The beneficial effects of the embodiments of the present invention are: The forming device is slidably connected to the frame through the left and right molds, and both have stamping grooves located on adjacent sides, which are arranged on both sides of the middle mold respectively. When stamping, the forming block on the middle mold can push the material at the stamping groove into it, and simultaneously form two symmetrical semicircular bends.

[0016] Furthermore, since the sliding direction of the middle mold intersects with the sliding direction of the left mold, the middle mold can slide away from between the left mold and the right mold. After sliding away, the two semicircular bends can be connected to form an elbow bend as a whole through the sliding of the left mold and / or the right mold, thereby realizing automatic splicing of the semicircular bends after stamping, without the need for manual operation, reducing process division, and improving production continuity.

[0017] This forming process effectively solves the problem of poor production continuity caused by manual operation through the automated coordination of the three steps of loading, stamping and unloading. Specifically: in the loading link, two blanks are inserted into the positioning areas of the left and right molds respectively until one end of the blanks abuts the top surface of the workbench. The positioning areas formed by the two sets of positioning columns on the left and right molds and the design that the top surface of the workbench is coplanar with the end of the stamping groove away from the opening can achieve precise positioning and rapid clamping of the blanks, avoiding manual placement deviations.

[0018] In the stamping and forming process, the left and right dies are moved so that the two blanks are in contact with the forming blocks. The punching head set at the top of the frame is lowered, so that the two forming blocks are extended and the blanks are pushed toward the unloading lining plate, thereby forming a semicircular bend. In this process, multiple dies slide in coordination, and a single stamping can complete the processing of two semicircular bends.

[0019] During the unloading process, after the forming block is reset and away from the unloading lining plate, the middle mold is moved away from the left mold and the right mold to make room for the moving combination of the left mold and the right mold. The left mold and / or the right mold can move to form the elbow and pipe as a whole. This process does not require manual removal and manual alignment. The precise splicing of the elbow and pipe can be achieved by utilizing the mold movement trajectory. Afterwards, as the unloading lining plate slides, the elbow and pipe can be demoulded as a whole, and automatic spot welding and automatic unloading are performed to directly obtain the overall pre-formed elbow and pipe, and subsequent precise welding can be performed without the need for tedious manual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0021] Figure 1This is a schematic structural diagram of a fully automatic elbow and pipe integral forming device according to an embodiment of the present invention; Figure 2 for Figure 1 Figure 10 is a diagram of a stamping forming state in an embodiment of the present invention; Figure 3 for Figure 1 The combined state diagram of the left and right modules in the embodiment of FIG. Figure 4 for Figure 1 In the embodiment of the present invention, the blanking state diagram is shown; Figure 5 for Figure 1 A schematic structural diagram of the left mold and the middle mold in the embodiment of FIG; Figure 6 for Figure 1 A diagram showing a state in which a blank is loaded onto the left mold in the embodiment of FIG. Figure 7 for Figure 1 A schematic structural diagram of the left model from a first perspective in an embodiment of the present invention; Figure 8 for Figure 1 A schematic structural diagram of the left model from the second viewing angle in the embodiment of FIG. Figure 9 for Figure 1 The structural coordination diagram of the left mold and the discharge lining plate in the embodiment; Figure 10 for Figure 9 Enlarged view of part A in the middle; Figure 11 for Figure 1 A schematic structural diagram of a driving rod in an embodiment of the present invention; Figure 12 for Figure 1 A cross-sectional view of the intermediate mold in the embodiment of FIG. Figure 13 This is a diagram of the changes in the processing and forming of elbows and bends.

[0022] In the figure: 1. frame, 101. workbench, 2. left die, 3. right die, 4. stamping groove, 401. opening, 5. middle die, 501. positioning hole, 6. forming block, 601. pressure-bearing slope, 7. semicircular elbow, 8. elbow elbow, 9. unloading lining plate, 10. lining plate baffle, 11. driving rod, 12. magnetic strip, 13. positioning column, 1301. positioning area, 14. punching head, 1401. stamping slope. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0024] To simplify the drawings, only the parts relevant to the disclosure are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0025] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] like Figures 1 to 4As shown, it shows a fully automatic elbow bend 8 integrated forming device in one embodiment of the present invention, the frame 1 serves as a basic supporting structure, and provides installation and sliding carriers for components such as the left mold 2, the right mold 3, and the middle mold 5. The left mold 2 and the right mold 3 serve as movable carriers of the punching groove 4, and are both slidably connected to the frame 1 and arranged at intervals along the horizontal lateral direction. Both and the middle mold 5 can be a mold-shaped square structure, and are provided on the adjacent sides of the left mold 2 and the right mold 3 with an arc-shaped punching groove 4 for accommodating a fan-shaped sheet and forming a semicircular elbow 7; the middle mold 5 slides between the left mold 2 and the right mold 3 and is connected to the frame The body 1 is slidably connected, and its sliding direction intersects with the sliding direction of the left mold 2, such as sliding horizontally and vertically, so that after sliding, the space required for the combination of the left mold 2 and the right mold 3 (the two semicircular bends 7 are spliced ​​into an elbow bend 8) can be made available, and under the external force of the worker, the elbow bend 8 is directly pulled out and spot welded as a whole, eliminating the additional alignment and splicing steps, and improving the forming accuracy. In addition, it is placed between the left mold 2 and the right mold 3, so that the forming blocks 6 on both sides of it that are adapted to the shape of the stamping groove 4 can be extended into the stamping groove 4 accordingly, and the sheet is pushed into the stamping groove 4 to form the semicircular bend 7, thereby completing the forming action.

[0030] Among them, the movement of the left mold 2, the right mold 3 and the middle mold 5 can be completed by guide rails, sliders and screws, or by telescopic cylinders. For example, the left mold 2 and the right mold 3 can be moved horizontally by telescoping the horizontal cylinder piston rod.

[0031] Workflow: First, place the blank in the stamping groove 4 of the left and right molds, stamp and form it, and then the forming block 6 pushes the blank to embed it into the stamping groove 4 to form a semicircular elbow 7. Then the middle mold 5 slides away from between the left and right molds, and the left and right molds slide close to each other to align the two semicircular elbows 7 and splice them into an elbow elbow 8. Finally, the blank is unloaded manually or with a simple mechanism, and the components are reset to prepare for the next round of production.

[0032] In the above-mentioned stamping process, after the left die 2 and the right die 3 are in contact with the middle die 5 , structures such as positioning pins can be used between the two adjacent ones to ensure the stability of the forming process.

[0033] like Figures 1 to 6 As shown, a discharge lining plate 9 is installed in the stamping groove 4, which can slide along the extended direction of the path and fit with the inner wall thereof, and then the material sheet will complete the forming action at the discharge lining plate 9. After the forming is completed, the discharge lining plate 9 can slide along the inner wall of the stamping groove 4. Due to the existence of the opening 401 at the end of the stamping groove 4 connected to the outside world, the combined elbow bend 8 can be discharged from the opening 401 as a whole to avoid being blocked, thereby realizing automatic unloading and the integration of forming and unloading. In addition, during the unloading process, workers can simultaneously perform spot welding operations on the inner wall of the elbow bend 8, eliminating the subsequent spot welding steps, and can be welded together in their aligned state, which is convenient for subsequent precise welding work.

[0034] Specifically, according to the shape of the punching groove 4, the opening 401 can be set as follows Figure 4 、 Figure 5 The end facing outward is shown to facilitate the discharge of the unloading lining plate 9 and the removal of the elbow bend 8.

[0035] Furthermore, Figures 4 to 10 As shown, on the basis of the above structure, lining plate bars are added to the edge positions on both sides of the notch of the stamping groove 4 (or they are formed in an integral manner), and it is clear that the middle mold 5, the left mold 2 and the right mold 3 all slide horizontally, so that after the unloading inner lining plate 9 drives the semicircular bend 7 to be discharged, the splicing seam of the two semicircular bends 7 can be exposed for spot welding, because it is still somewhat inconvenient to manually reach into the inner wall for welding, and exposing the splicing seam of the outer wall is just right.

[0036] Specifically, when the middle die 5 slides away from the left die 2 and the right die 3, the left die 2 and the right die 3 approach each other and are spliced ​​into an elbow bend 8, the unloading inner lining plate 9 is moved to move it along the arc path in the extension direction of the punching groove 4, so as to bring out the elbow bend 8, and prevent the unloading inner lining plate 9 and the elbow bend 8 from being smoothly discharged from the opening 401 due to the movement of the linear movement that is not compatible with the extension direction of the punching groove 4; and after discharge, the lining plate baffle 10 is separated from the unloading inner lining plate 9, that is, like Figure 4 As shown, two arc-shaped plates (discharge lining plates 9) are held from both sides to discharge the elbow bend 8 as a whole, so that the upper and lower joint seams are exposed to the outside world, which is convenient for welding work.

[0037] In addition, before the unloading action is performed, the unloading inner lining plate 9 can be stably placed in the stamping groove 4 on the vertical plane without falling, also because the two lining plate guard bars 10 abut against and support the two sides of the unloading inner lining plate 9 from both sides.

[0038] like Figures 4 to 11 As shown, taking into account the driving structure of the unloading lining plate 9 to realize automatic unloading, the unloading lining plate 9 is first set to slide along the arc path in the extension direction of the stamping groove 4. The unloading lining plate 9 is close to the inner wall of the stamping groove 4 and is provided with a slider that is slidably connected to the arc-shaped slide groove on the inner wall of the stamping groove 4. A driving rod 11 is provided in the left mold 2 and the right mold 3 through the swing of the motor. The driving rod 11 is rotatably connected to the slider, and then the driving rod 11 swings under the action of the motor, which can drive the unloading lining plate 9 to slide along the arc-shaped slide groove to discharge the elbow bend 8.

[0039] Specific as Figure 11 As shown, the driving rod 11 is built into the left mold 2 along the vertical swing, and the slider (i.e. Figure 10 The arc-shaped strip on the left side of the middle unloading lining plate 9 is rotatably connected to the end of the driving rod 11 away from the swing axis through bearings and other components to drive the unloading lining plate 9 to slide along the axis of the stamping groove 4.

[0040] like Figures 5 to 10 As shown, a magnetic strip 12 is embedded in the center of the unloading lining plate 9, and before the unloading lining plate 9 slides, that is, the middle mold 5 slides away from between the left and right molds, the semicircular bends 7 of the left mold 2 and the right mold 3 lose the support of the middle mold 5, and gradually approach the process of splicing, which plays an adsorption role on the semicircular bends 7 to prevent the semicircular bends 7 from detaching from the unloading lining plate 9 under their own weight.

[0041] In addition, the magnetic strip 12 is embedded in the center, which can avoid uneven force caused by the biased adsorption point, making it impossible to stably adsorb the semicircular bend pipe 7, and avoid interference between the magnetic strip 12 and the inner wall of the stamping groove 4 or the lining plate baffle, ensuring the normal sliding of the unloading inner lining plate 9 in the stamping groove 4 without affecting the forming process of the semicircular bend pipe 7.

[0042] like Figures 1 to 10 As shown, two groups of positioning columns 13 are provided on both sides of the notch of the left and right die stamping grooves 4, and each group of positioning columns 13 includes a number of positioning columns 13 arranged along the extension direction of the stamping groove 4, so as to form a positioning area 1301 therebetween, so as to facilitate the rapid and accurate determination of the loading position of the sheet, and to accurately position it at the notch of the stamping groove 4; specifically, when loading, one end of the sheet is inserted into the positioning area 1301, and its two sides are limited by the two groups of positioning columns 13. Since a number of positioning columns 13 form continuous positioning points in the extension direction of the stamping groove 4, the sliding direction of the sheet is restricted so that it can also slide into the positioning area 1301 along the extension direction of the stamping groove 4, ensuring that the two sheets that are adapted to the shape of the stamping groove 4 can completely cover the entire stamping groove 4, forming a complete semicircular bend 7.

[0043] In addition, the positioning columns 13 of the left mold 2 and the right mold 3 need to be staggered and able to extend into the corresponding holes to avoid the left mold 2 and the right mold 3 being unable to fully fit together and be successfully combined due to the obstruction of the positioning columns 13 when the elbow and bend pipe 8 are combined and spliced.

[0044] like Figures 1 to 10 As shown, considering the precise positioning of the sheet, after limiting its insertion sliding direction by the positioning column 13, it is also necessary to determine the sliding limit position, and set the limit position as the precise positioning point. Then, when the worker inserts the sheet, until it reaches the sliding limit position, it means that the loading is completed and the loading position is accurate.

[0045] Specifically, a horizontal workbench 101 is provided on the frame 1, and the middle mold 5, the left mold 2 and the right mold 3 are all slidably connected to the top surface of the workbench 101, and the end of the stamping groove 4 away from the opening 401 is coplanar with the top surface of the workbench 101, so that the sheet can be inserted and after sliding in the positioning area 1301, one end thereof can abut against the top surface of the workbench 101, thereby determining the sliding limit position of the sheet without affecting other operations.

[0046] At the same time, the molding process also needs to be considered. The positioning column 13 can be extended into the corresponding positioning hole 501 to determine the position of the middle mold 5 and the left mold 2 or the right mold 3 during the molding process to avoid front and back misalignment. Therefore, a plurality of positioning holes 501 are provided on both sides of the middle mold 5. The plurality of positioning columns 13 correspond to the plurality of positioning holes 501 one by one. The left mold 2 or the right mold 3 slides against the sheet until it abuts against the molding block 6. At this time, the positioning column 13 has been extended into the positioning hole 501, and then the molding block 6 is moved for molding.

[0047] In addition, the sliding direction of the middle mold 5 is perpendicular to the sliding direction of the left mold 2, which optimizes the component layout space, reduces the floor space, and facilitates the early installation and assembly.

[0048] like Figure 12 As shown, through the inclined transmission structure of the punching head 14 and the forming block 6, a linkage structure of bidirectional forming driven by a single power source is realized. When the punching head 14 is lowered by the hydraulic cylinder on the top of the frame 1, the punching inclined surface 1401 at its bottom acts on the pressure inclined surface 601 of the forming blocks 6 on both sides at the same time, converting the vertical downward movement into a synchronous expansion force in the horizontal direction, forcing the two forming blocks 6 to slide horizontally along the middle mold 5 and extend, synchronously and accurately pushing the sheet into the stamping groove 4 of the left and right molds to form a semicircular bend 7; in addition, a spring can be added between the two forming blocks 6 for reset. After the punching head 14 rises, the spring will work to pull the two forming blocks 6 closer to each other and extend out of the stamping groove 4.

[0049] like Figures 1 to 4 As shown, the fully automatic elbow and pipe bending process 8 includes three steps: loading, stamping and unloading. When loading, two pieces of material are respectively inserted into the positioning areas 1301 of the left die 2 and the right die 3. The positioning areas 1301 formed by the positioning columns 13 and the abutment of the top surface of the workbench 101 are used to achieve precise two-dimensional positioning of the pieces, ensuring that the position of the pieces is symmetrical and fixed before stamping. When stamping, the left die 2 and the right die 3 slide toward the middle die 5 to make the pieces abut against the forming block 6, and then the punching head 14 descends, and the transmission of the punching inclined surface 1401 and the pressure-bearing inclined surface 601 is used to push the forming block 6 to press the material. The sheet is pushed into the unloading lining plate 9 in the punching groove 4, so that the sheet fits the curved surface of the lining plate to form a semicircular bend 7. During this process, the magnetic strip 12 adsorbs the workpiece to prevent displacement, and two semicircular bends 7 can be formed simultaneously in one punching; then the sheet is unloaded, the forming block 6 is reset, the middle mold 5 slides vertically away from the area between the left and right molds, the left mold 2 and the right mold 3 slide to align the semicircular bends 7 and splice them into elbow bends 8, then the driving rod 11 drives the unloading lining plate 9 to slide along the arc path, and discharges the elbow bend 8 from the opening 401. During the unloading process, the magnetic strip 12 remains adsorbed to ensure stability, and finally each mold is reset to enter the next cycle.

[0050] This process realizes the automation of the entire process from sheet loading to elbow and pipe forming and discharge through precise positioning, multi-mode coordinated movement and automatic unloading, avoiding deviations and process segmentation caused by manual operation, improving production efficiency, forming accuracy and consistency of product quality, while simplifying the process flow, reducing labor intensity and solving the problems of poor production continuity and poor precision in traditional processes.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fully automatic elbow and pipe integral forming device, characterized in that: include: Frame (1); A left mold (2) and a right mold (3), wherein the left mold (2) and the right mold (3) are both slidably connected to the frame (1), the left mold (2) and the right mold (3) are arranged at intervals and each has a stamping groove (4), and the stamping groove (4) is located on adjacent sides of the left mold (2) and the right mold (3); An intermediate mold (5), the intermediate mold (5) is slidably connected to the frame (1) and is located between the left mold (2) and the right mold (3), and forming blocks (6) are provided on both sides of the intermediate mold (5), and the two forming blocks (6) correspond to the two punching grooves (4) on the left mold (2) and the right mold (3) respectively. The forming blocks (6) can push the sheet into the punching groove (4) and cooperate with the punching groove (4) to form a semicircular elbow (7); The sliding direction of the middle mold (5) is arranged to intersect with the sliding direction of the left mold (2), and the middle mold (5) can slide away from between the left mold (2) and the right mold (3), so that the two semicircular bends (7) are assembled into an elbow bend (8) by sliding the left mold (2) and the right mold (3) closer together.

2. The fully automatic elbow and pipe integral forming device according to claim 1, characterized in that: At least one end of the punching groove (4) has an opening (401), and a discharge lining plate (9) is slidably provided on the inner wall of the punching groove (4) and is slidably matched with the inner wall of the punching groove (4). The discharge lining plate (9) can abut against the side wall of the material sheet to cooperate with the forming block (6) to form the material sheet into a semicircular bend pipe. The discharge lining plate (9) can also slide along the punching groove (4) to drive the semicircular bend pipe to move out from the opening (401).

3. The fully automatic elbow and pipe integral forming device according to claim 2, characterized in that: The middle die (5), the left die (2) and the right die (3) all slide horizontally, and the edges on both sides of the notch of the punching groove (4) are provided with lining bars (10) protruding toward the central axis of the punching groove (4), and the two lining bars (10) respectively correspond to and slide with the two sides of the discharge inner lining plate (9), and the lining bars (10) are used to limit the discharge inner lining plate (9) from being separated from the punching groove (4). When the semicircular bend (7) and the discharge inner lining plate (9) are moved out of the punching groove (4), a welding space is formed between the two discharge inner lining plates (9) for exposing the joint welds of the two semicircular bends (7), so that the two semicircular bends (7) can be welded into an elbow bend (8).

4. The fully automatic elbow and pipe integral forming device according to claim 2, characterized in that: The unloading inner lining plate (9) slides along an arc path, and a driving rod (11) is swingably provided in the left mold (2) and the right mold (3). The driving rod (11) is fixedly connected to the unloading inner lining plate (9), and the driving rod (11) can drive the unloading inner lining plate (9) to slide along the central axis of the stamping groove (4).

5. The fully automatic elbow and pipe integral forming device according to claim 2, characterized in that: A magnetic strip (12) is embedded on the surface of the unloading lining plate (9), and the magnetic strip (12) is used to absorb the semicircular elbow (7).

6. The fully automatic elbow and pipe integral forming device according to claim 2, characterized in that: The two punching grooves (4) are symmetrically arranged, and two groups of positioning columns (13) are provided on the left mold (2) and the right mold (3). The positioning columns (13) are located on adjacent sides of the left mold (2) and the right mold (3), and the two groups of positioning columns (13) are respectively arranged one by one on both sides of the extension direction of the punching groove (4) and are respectively used to position the two side edges of the sheet. Each group of positioning columns (13) includes a plurality of positioning columns (13) arranged along the extension direction of the punching groove (4); A positioning area (1301) is formed between the two groups of positioning columns (13), and the positioning area (1301) is used to position the sheet at the notch of the punching slot (4).

7. The fully automatic elbow and pipe integral forming device according to claim 6, characterized in that: A workbench (101) is provided on the frame (1), the middle die (5), the left die (2) and the right die (3) are all slidably connected to the top surface of the workbench (101), and the end of the punching groove (4) away from the opening (401) is coplanar with the top surface of the workbench (101), so that one end of the sheet can be positioned against the top surface of the workbench (101).

8. The fully automatic elbow and pipe integral forming device according to claim 6, characterized in that: The sliding direction of the middle mold (5) is perpendicular to the sliding direction of the left mold (2). Both sides of the middle mold (5) have two groups of positioning holes (501) that correspond one to one and are located on both sides of the forming block (6). Each group of positioning holes (501) includes a plurality of positioning holes (501) arranged along the extension direction of the forming block (6). The positioning columns (13) are positioned and matched with the positioning holes (501) in a one-to-one correspondence.

9. The fully automatic elbow and pipe integral forming device according to claim 6, characterized in that: The frame (1) is provided with a punching head (14) at the top thereof, and the outer periphery of the bottom of the punching head (14) has a punching slope (1401) extending obliquely toward the axis. The intermediate die (5) is located below the punching head (14). The forming blocks (6) are provided on both sides of the intermediate die (5) along a horizontal sliding manner. The two forming blocks (6) have a pressure-bearing slope (601) that can slide with the punching slope (1401). The punching head (14) is configured to push the two punching slopes (1401) with the help of the punching slope (1401) after descending, so that the two forming blocks (6) extend into the punching groove (4) and form a semicircular bend (7).

10. A fully automatic elbow and pipe integral forming process, using the fully automatic elbow and pipe integral forming device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Loading: insert two blanks into the positioning areas (1301) of the left mold (2) and the right mold (3), respectively, and make one end of the blanks abut against the top surface of the workbench (101); S2, stamping and forming: Move the left die (2) and the right die (3) until the two pieces are in contact with the forming block (6), and lower the punch head (14) to move the forming block (6) horizontally outward and press the piece to move into the stamping groove (4), and form a semicircular elbow (7) by the cooperation of the forming block (6) and the discharge lining plate (9); S3, unloading: the forming block (6) is moved to the side away from the unloading lining plate (9) until it is reset, the middle mold (5) is moved out from between the left mold (2) and the right mold (3), the left mold (2) and the right mold (3) are moved toward each other until they are connected, until the two semicircular bends (7) form an elbow bend (8), the unloading lining plates (9) of the left mold (2) and the right mold (3) are synchronously driven to slide along the stamping groove (4), the elbow bend (8) is moved and welded, and finally the left mold (2), the right mold (3) and the middle mold (5) are moved and reset.

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