A fully automatic elbow pipe integrated forming device and process

Abstract

This invention relates to the technical field of elbow and pipe forming devices. The invention provides a fully automatic integrated elbow and pipe forming device and process. The device includes: a left and right mold slidably connected to a frame, with the left and right molds spaced apart and each having a stamping groove located on adjacent sides; a middle mold slidably connected to the frame and located between the left and right molds, with forming blocks on both sides of the middle mold; wherein the sliding direction of the middle mold intersects with the sliding direction of the left mold, and the middle mold can slide away from the left and right molds, so that after the left and / or right molds slide, the two semicircular bends can be formed into an elbow and pipe. Through the above technical solution, after the middle mold slides away from the left and right molds, and through the sliding of the left and / or right molds, the two semicircular bends can be automatically joined to form an integrated elbow and pipe, realizing automatic splicing of the stamped semicircular bends without manual operation, thus improving production continuity.

Description

Technical Field

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

[0002] Elbows and bends are pipe fittings used to change the direction of pipelines and are widely used in various fields. They can be manufactured in various ways, such as integral casting, straight pipe bending, or butt welding. For butt welding, the processing can be roughly divided into: Prepare suitable fan-shaped sheet material ( Figure 13 The leftmost component is placed in the corresponding mold of the stamping machine and stamped into a semi-circular bent tube structure. Figure 13 (The intermediate components), and finally, two semi-circular bends are manually removed. After aligning and spot-welding them with a welding torch, a specialized welding machine is used to precisely weld the weld seam, thus obtaining a complete elbow bend. Figure 13 (The rightmost part).

[0003] Because the above stamping is basically a single-process, single-stamping process, most of the materials are loaded and unloaded manually and the stamping structure is simple. This means that the subsequent splicing, spot welding and welding processes also need to be completed manually, resulting in poor accuracy. Moreover, the various processes are relatively separate and cannot be automatically spliced ​​after stamping to prepare for spot welding and precision welding. The continuity of production needs to be improved. Summary of the Invention

[0004] To overcome the above-mentioned defects, embodiments of the present invention provide a fully automatic elbow and pipe bending integrated forming device and process, which solves the technical problem in related technologies that stamping forming machines cannot automatically splice after stamping to prepare for spot welding and precision 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 bending integrated forming device, comprising: Frame; The left mold and the right mold are slidably connected to the frame. The left mold and the right mold are arranged at intervals and each has a stamping groove. The stamping groove is located on the adjacent side of the left mold and the right mold. An intermediate mold is slidably connected to the frame and 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 one-to-one with the two stamping grooves on the left mold and the right mold, respectively. The forming blocks can push the sheet into the stamping grooves and cooperate with the stamping grooves to form a semi-circular bent tube. The sliding direction of the intermediate mold is intersected with that of the sliding direction of the left mold. The intermediate mold can slide away from the left mold and the right mold, so that the two semicircular bends can be joined together to form an elbow bend by the sliding of the left mold and the right mold.

[0006] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integral forming device, wherein the stamping groove has an opening at at least one end, and an unloading inner liner plate is slidably provided on the inner wall of the stamping groove and slidably cooperates with the inner wall of the stamping groove. The unloading inner liner plate can abut against the side wall of the material sheet to cooperate with the forming block to form the material sheet into a semi-circular bend. The unloading inner liner plate can also slide along the stamping groove to drive the semi-circular bend to move out from the opening.

[0007] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe integral forming device, wherein the intermediate mold, the left mold and the right mold all slide horizontally, and the two sides of the groove of the stamping groove are provided with liner baffles protruding towards the central axis of the stamping groove. The two liner baffles correspond one-to-one with the two sides of the unloading inner liner and slide in cooperation. The liner baffles are used to limit the unloading inner liner from disengaging from the stamping groove. The unloading inner liner can also form a welding space between the two unloading inner liners when the semi-circular bend and the unloading inner liner move out of the stamping groove, so that the splicing weld of the two semi-circular bends can be exposed, so that the two semi-circular bends can be welded into an elbow and pipe.

[0008] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe bending integrated forming device, wherein the unloading inner liner slides along an arc path, and a drive rod is oscillatingly provided in both the left mold and the right mold. The drive rod is fixedly connected to the unloading inner liner, and the drive rod can drive the unloading inner liner 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 bending integrated forming device, wherein a magnetic strip is embedded on the surface of the unloading inner liner plate, and the magnetic strip is used to adsorb the semi-circular bend.

[0010] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe bending integrated forming device, wherein two stamping grooves are symmetrically arranged, and two sets of positioning posts are provided on both the left mold and the right mold. The positioning posts are located on the adjacent sides of the left mold and the right mold, and the two sets of positioning posts are respectively arranged one-to-one on both sides of the extension direction of the stamping groove, and are respectively used to position the two side edges of the material sheet. Each set 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 sets of positioning posts, and the positioning area is used to position the material sheet at the opening of the stamping groove.

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

[0012] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe bending integrated forming device, wherein the sliding direction of the intermediate mold is perpendicular to the sliding direction of the left mold, and both sides of the intermediate mold have two sets of corresponding positioning holes located on both sides of the forming block. Each set of positioning holes includes a plurality of positioning holes (501) arranged along the extension direction of the forming block, and the positioning pin is positioned and engaged with the positioning pin in a one-to-one correspondence.

[0013] For example, at least one embodiment of the present invention provides a fully automatic elbow and pipe bending integrated forming device, wherein a punching head is raised and lowered on the top of the frame, the bottom outer periphery of the punching head has a punching inclined surface extending inclined towards the axis, the intermediate mold is located below the punching head, and the forming blocks are slidably arranged on both sides of the intermediate mold along the horizontal direction. Both forming blocks have a pressure-bearing inclined surface that can slide and cooperate with the punching inclined surface. The punching head is configured such that after descending, it pushes the two punching inclined surfaces with the help of the punching inclined surface, so that the two forming blocks extend into the punching groove and form a semi-circular bend.

[0014] A fully automated elbow and pipe bending integrated forming process, using the aforementioned fully automated elbow and pipe bending integrated forming device, is characterized by comprising the following steps: S1. Loading: Insert the two pieces into the positioning areas of the left and right molds respectively, and make one end of the piece abut against the top surface of the worktable; S2, Stamping: Move the left and right dies until the two pieces abut against the forming block, and lower the stamping head to make the forming block move horizontally outward and press the pieces into the stamping groove. The semi-circular bent tube is formed by the cooperation of the forming block and the unloading inner liner. S3, Unloading: The forming block moves to the side away from the unloading inner liner plate until it is reset. The middle mold is moved out from between the left and right molds. The left and right molds are moved towards each other until they are connected until the two semi-circular bends form an elbow. The unloading inner liner plates of the left and right molds are driven to slide along the stamping groove simultaneously. The elbow is moved and welded. Finally, the left, right and middle molds are moved and reset.

[0015] The beneficial effects of the embodiments of the present invention are as follows: The forming device is slidably connected to the frame through the left and right molds, each with a stamping groove located on the adjacent side and arranged on both sides of the middle mold. This allows the forming block on the middle mold to push the material sheet at the stamping groove into it during stamping, thus simultaneously forming two symmetrical semi-circular bends.

[0016] Furthermore, since the sliding direction of the intermediate die intersects with that of the left die, the intermediate die can slide away from the left and right dies. After sliding away, the two semicircular bends can be joined together to form an integral bend by sliding the left and / or right dies. This achieves automatic splicing of the stamped semicircular bends without manual operation, reduces process division, and improves production continuity.

[0017] This forming process effectively solves the problem of poor production continuity caused by manual operation by automating and coordinating the three steps of feeding, stamping, and unloading. Specifically, in the feeding stage, two pieces are inserted into the positioning areas of the left and right dies respectively until one end of the piece abuts against the top surface of the worktable. By utilizing the positioning area formed by the two sets of positioning pins on the left and right dies, as well as the design that the top surface of the worktable is coplanar with the end of the stamping groove away from the opening, the precise positioning and rapid clamping of the piece are achieved, avoiding deviations caused by manual placement.

[0018] In the stamping process, the left and right dies are moved to make the two sheets abut against the forming block. The stamping head, which is set at the top of the frame, descends to make the two forming blocks extend and push the sheets against the unloading inner liner, thereby forming a semi-circular bend. During this process, the multiple dies slide and cooperate, and two semi-circular bends can be processed in a single stamping.

[0019] During the material unloading process, after the forming block is reset and moved away from the unloading liner plate, the middle mold is moved away from the left and right molds, which makes room for the movement and combination of the left and right molds. The movement of the left mold and / or the right mold can form the whole elbow and pipe. This process does not require manual part removal or manual alignment. The elbow and pipe can be accurately spliced ​​by using the mold movement trajectory. Then, as the unloading liner plate slides, the elbow and pipe can be demolded as a whole, and automatic spot welding and automatic unloading can be performed to directly obtain the whole pre-formed elbow and pipe. Then, subsequent precise welding can be performed without the need for tedious manual operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0021] Figure 1This is a schematic diagram of a fully automatic elbow and pipe bending integrated forming device according to one embodiment of the present invention; Figure 2 for Figure 1 The stamping state diagram in the embodiment; Figure 3 for Figure 1 The embodiment shows the combined state diagram of the left and right molds; Figure 4 for Figure 1 The embodiment shows the material feeding state diagram; Figure 5 for Figure 1 A schematic diagram of the structure of the left mold and the middle mold in the embodiment; Figure 6 for Figure 1 A diagram showing the state of the left mold with the sheet loaded in the embodiment; Figure 7 for Figure 1 A schematic diagram of the structure of the left module from the first perspective in the embodiment; Figure 8 for Figure 1 A schematic diagram of the structure of the left module from the second perspective in the embodiment; Figure 9 for Figure 1 The structural fit diagram of the left mold and the unloading inner liner in the embodiment; Figure 10 for Figure 9 Enlarged view of section A in the middle; Figure 11 for Figure 1 A schematic diagram of the drive rod in the embodiment; Figure 12 for Figure 1 Intermediate cross-sectional view of the embodiment; Figure 13 This is a diagram showing the changes in the processing and forming of elbows and bends.

[0022] In the diagram: 1. Frame, 101. Workbench, 2. Left mold, 3. Right mold, 4. Stamping groove, 401. Opening, 5. Intermediate mold, 501. Positioning hole, 6. Forming block, 601. Pressure-bearing inclined surface, 7. Semi-circular bend, 8. Elbow bend, 9. Unloading inner liner, 10. Liner baffle, 11. Drive rod, 12. Magnetic strip, 13. Positioning post, 1301. Positioning area, 14. Stamping head, 1401. Stamping inclined surface. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0024] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0025] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] like Figures 1-4As shown, this invention illustrates a fully automatic integrated forming device for elbows and pipes 8 according to an embodiment of the present invention. The frame 1 serves as the basic support structure, providing an installation and sliding carrier for components such as the left mold 2, right mold 3, and intermediate mold 5. The left mold 2 and right mold 3 serve as moving carriers for the stamping grooves 4, both slidably connected to the frame 1 and arranged at horizontal intervals. Both left and right molds, as well as the intermediate mold 5, can be mold-shaped block structures. Arc-shaped stamping grooves 4 for accommodating fan-shaped annular material sheets and forming semi-circular bent pipes 7 are provided on adjacent sides of the left mold 2 and right mold 3. The intermediate mold 5 slides between the left mold 2 and right mold 3 and is connected to the frame 1. 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, space is created for the left mold 2 and the right mold 3 to combine (to splice the two semi-circular bends 7 into a bend 8). Under the external force of the worker, the bend 8 is directly pulled out and spot-welded as a whole, saving the extra 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 that are adapted to the shape of the stamping groove 4 can be inserted into the stamping groove 4 to push the sheet into the stamping groove 4 to form the semi-circular bend 7 and complete the forming action.

[0030] The movement of the left mold 2, right mold 3 and intermediate mold 5 can be accomplished by guide rails, sliders and lead screws, or by telescopic cylinders. For example, the left mold 2 and right mold 3 can move horizontally by extending and retracting the piston rod of a horizontal hydraulic cylinder.

[0031] Work process: First, place the sheet material in the stamping grooves 4 of the left and right dies and stamp it. After the forming block 6 pushes the sheet material into the stamping groove 4 to form a semi-circular bent tube 7, the middle die 5 slides away from the left and right dies. The left and right dies slide closer to each other so that the two semi-circular bent tubes 7 are aligned and spliced ​​to form an elbow bent tube 8. Finally, the material is unloaded manually or by a simple mechanism, and all parts 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 abut against the middle die 5, the stability of the forming process can be ensured by structures such as positioning pins between the two adjacent parts.

[0033] like Figures 1-6 As shown, a discharge liner 9 is installed inside the stamping groove 4, which can slide along its extended path and fits against its inner wall. The material sheet will then complete the forming action at the discharge liner 9. After forming, the discharge liner 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 that connects to the outside, the entire assembly of the elbow and bend 8 can be discharged from the opening 401, avoiding obstruction and realizing automated unloading. The forming and unloading are integrated. During the unloading process, the worker can simultaneously perform spot welding on the inner wall of the elbow and bend 8, eliminating the need for subsequent spot welding steps. They can be welded together in an aligned state, facilitating subsequent precise welding work.

[0034] Specifically, depending on the shape of the stamping groove 4, its opening 401 can be set as follows: Figure 4 , Figure 5 The outer end shown facilitates the discharge of the inner liner plate 9 and the removal of the elbow pipe 8.

[0035] Furthermore, such as Figures 4-10 As shown, based on the above structure, liner plates and baffles are added to both sides of the groove edge of the stamping groove 4 (or in an integral form), 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 liner plate 9 drives the semi-circular bend 7 out, the splice seam of the two semi-circular bends 7 can be exposed for spot welding. This is because it is still somewhat inconvenient to manually insert into the inner wall for welding, while exposing the splice seam of the outer wall is just right.

[0036] Specifically, when the intermediate mold 5 slides away from the left mold 2 and the right mold 3, and the left mold 2 and the right mold 3 move closer to each other and splice together to form the elbow 8, the unloading inner liner 9 is moved to move along the arc path of the extension direction of the stamping groove 4, so as to bring out the elbow 8. This prevents movements that are not compatible with the extension direction of the stamping groove 4, such as linear movements, from causing the unloading inner liner 9 and the elbow 8 to fail to be discharged smoothly from the opening 401. After discharge, because the liner baffle 10 separates from the unloading inner liner 9, that is, like... Figure 4 As shown, the two arc-shaped plates (unloading inner lining plates 9) are pulled out from both sides of the elbow pipe 8 as a whole, so that the upper and lower splice seams are exposed to the outside, which facilitates welding work.

[0037] Furthermore, the unloading liner 9 is able to remain stable on the vertical surface of the stamping groove 4 before the unloading action is performed because the two liner baffles 10 abut against the two sides of the unloading liner 9.

[0038] like Figures 4-11 As shown, considering the driving structure of the unloading liner 9 to achieve automated unloading, the unloading liner 9 is first set to slide along the arc path of the extension direction of the stamping groove 4. The unloading liner 9 is provided with a slider that is slidably connected to the arc groove of the inner wall of the stamping groove 4 on the side near the inner wall of the stamping groove 4. Both the left mold 2 and the right mold 3 are provided with a drive rod 11 that is oscillating through the motor. The drive rod 11 is rotatably connected to the slider. Then, the drive rod 11 oscillates under the action of the motor, which can drive the unloading liner 9 to slide along the arc groove and discharge the elbow and bend 8.

[0039] Specifically, such as Figure 11 As shown, the drive rod 11 swings vertically and is built into the left mold 2, and the slider (i.e. Figure 10 The arc-shaped section on the left side of the unloading liner 9 is rotatably connected to the end of the drive rod 11 away from the swing axis through bearings and other components, so as to drive the unloading liner 9 to slide along the axis of the stamping groove 4.

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

[0041] In addition, the magnetic strip 12 is embedded in the center, which can avoid uneven force due to the adsorption point being off-center, which would prevent the semi-circular bend 7 from being stably adsorbed. It also avoids interference between the magnetic strip 12 and the inner wall of the stamping groove 4 or the liner baffle, ensuring the normal sliding of the unloading inner liner 9 in the stamping groove 4, and does not affect the forming process of the semi-circular bend 7.

[0042] like Figures 1-10 As shown, two sets of positioning posts 13 are provided on both sides of the opening of the left and right die stamping grooves 4. Each set of positioning posts 13 includes several positioning posts 13 arranged along the extension direction of the stamping groove 4 to form a positioning area 1301 between them, which facilitates the quick and accurate determination of the feeding position of the sheet and positions it at the opening of the stamping groove 4. Specifically, when feeding, one end of the sheet is inserted into the positioning area 1301, and its two sides are limited by the two sets of positioning posts 13. Since several positioning posts 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 and form a complete semi-circular bent tube 7.

[0043] In addition, the positioning pins 13 of the left mold 2 and the right mold 3 need to be misaligned and able to extend into the corresponding holes to avoid the left mold 2 and the right mold 3 not being able to fit completely due to the obstruction of the positioning pins 13 when assembling and splicing elbows and bends 8, thus making it impossible to assemble smoothly.

[0044] like Figures 1-10 As shown, to further consider the accurate positioning of the material piece, after limiting its insertion and sliding direction by the positioning post 13, it is also necessary to determine the sliding limit position and set the limit position as the positioning accuracy point. Then, during the process of the worker inserting the material piece, until it reaches the sliding limit position, it means that the feeding is completed and the feeding position is accurate.

[0045] Specifically, the frame 1 is provided with a horizontal worktable 101. The middle mold 5, the left mold 2 and the right mold 3 are all slidably connected to the top surface of the worktable 101. The end of the stamping groove 4 away from the opening 401 is coplanar with the top surface of the worktable 101 so that after the material is inserted and slids in the positioning area 1301, one end of it can abut against the top surface of the worktable 101, thereby determining the sliding limit position of the material and not affecting other operations.

[0046] At the same time, the molding process also needs to be considered. The positioning pin 13 can extend into the corresponding positioning hole 501 to determine the position of the middle mold 5 and the left mold 2 or right mold 3 during the molding process, so as to avoid misalignment. Therefore, the middle mold 5 is provided with several positioning holes 501 on both sides. Several positioning pins 13 correspond to several positioning holes 501 one by one. The left mold 2 or right mold 3 slides against the material sheet until it abuts against the molding block 6. At this time, the positioning pin 13 has extended into the positioning hole 501, and then the molding block 6 is moved to perform 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 footprint, and facilitates early installation and assembly.

[0048] like Figure 12 As shown, the inclined transmission structure of the stamping head 14 and the forming block 6 realizes a linkage structure for bidirectional forming driven by a single power source. When the stamping head 14 descends at the top of the frame 1 via a hydraulic cylinder, the stamping inclined surface 1401 at its bottom acts simultaneously on the bearing inclined surface 601 of the forming blocks 6 on both sides, 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 intermediate mold 5 and extend out, synchronously and accurately pushing the sheet into the stamping groove 4 of the left and right molds to form a semi-circular bent tube 7; in addition, a spring can be added between the two forming blocks 6 for resetting. After the stamping head 14 rises, the spring will play a role in pulling the two forming blocks 6 closer to each other and extending out of the stamping groove 4.

[0049] like Figures 1-4 As shown, the fully automatic elbow and pipe bending 8 integrated forming process includes three steps: feeding, stamping, and unloading. During feeding, two pieces are inserted into the positioning areas 1301 of the left mold 2 and the right mold 3 respectively. Through the positioning area 1301 formed by the positioning pin 13 and the abutment action of the top surface of the worktable 101, the precise two-dimensional positioning of the pieces is achieved, ensuring that the pieces are symmetrical and fixed in position before stamping. During stamping, the left mold 2 and the right mold 3 slide towards the middle mold 5 so that the pieces abut against the forming block 6. Then, the stamping head 14 descends, and through the transmission between the stamping inclined surface 1401 and the bearing inclined surface 601, the forming block 6 is pushed to unload the pieces. The sheet is inserted into the stamping groove 4 by the unloading inner liner plate 9, so that the sheet fits the curved surface of the inner liner plate to form a semi-circular bent tube 7. During this process, the magnetic strip 12 attracts the workpiece to prevent displacement, and two semi-circular bent tubes 7 can be formed simultaneously in one stamping. After that, the material is unloaded, the forming block 6 is reset, the middle mold 5 slides vertically away from the area between the left and right molds, and the left mold 2 and the right mold 3 slide to align the semi-circular bent tubes 7 and splice them into a bent tube 8. Then the drive rod 11 drives the unloading inner liner plate 9 to slide along the arc path and discharge the bent tube 8 from the opening 401. During the unloading process, the magnetic strip 12 maintains attraction to ensure stability. Finally, each mold is reset and enters the next cycle.

[0050] This process achieves full automation from sheet material feeding to elbow and pipe forming and discharge through precise positioning, multi-mode coordinated motion and automated unloading. It avoids deviations from manual operation and process segmentation, improves production efficiency, forming accuracy and product quality consistency, simplifies the process flow, reduces labor intensity, and solves the problems of poor production continuity and poor accuracy 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 it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fully automatic elbow and pipe bending integrated forming device, characterized in that, include: Frame (1); Left mold (2) and right mold (3), both left mold (2) and right mold (3) are slidably connected to the frame (1), the left mold (2) and right mold (3) are arranged at intervals and each has a stamping groove (4), the stamping groove (4) is located on the adjacent side of the left mold (2) and the right mold (3); The intermediate mold (5) is slidably connected to the frame (1) and located between the left mold (2) and the right mold (3). The intermediate mold (5) has forming blocks (6) on both sides. The two forming blocks (6) correspond one-to-one with the two stamping grooves (4) on the left mold (2) and the right mold (3). The forming blocks (6) can push the sheet into the stamping groove (4) and cooperate with the stamping groove (4) to form a semi-circular bent tube (7). The sliding direction of the intermediate mold (5) is perpendicular to the sliding direction of the left mold (2). The intermediate mold (5) can slide away from the left mold (2) and the right mold (3) so that the two semicircular bends (7) can be joined together to form an elbow bend (8) by sliding the left mold (2) and the right mold (3). The stamping groove (4) has an opening (401) at at least one end. A discharge liner (9) is slidably provided on the inner wall of the stamping groove (4) and is slidably engaged with the inner wall of the stamping groove (4). The discharge liner (9) can abut against the side wall of the sheet to cooperate with the forming block (6) to form the sheet into a semi-circular bent tube. The discharge liner (9) can also slide along the stamping groove (4) to drive the semi-circular bent tube out from the opening (401). The intermediate mold (5), the left mold (2) and the right mold (3) all slide horizontally. The two sides of the groove of the stamping groove (4) are provided with liner baffles (10) protruding towards the central axis of the stamping groove (4). The two liner baffles (10) correspond to the two sides of the unloading inner liner (9) and slide together. The liner baffles (10) are used to limit the unloading inner liner (9) from disengaging from the stamping groove (4). The unloading inner liner (9) can also form a welding space between the two unloading inner liners (9) when the semi-circular bend (7) and the unloading inner liner (9) move out of the stamping groove (4) so ​​that the splicing weld of the two semi-circular bends (7) can be exposed, so that the two semi-circular bends (7) can be welded into elbow bends (8).

2. The fully automatic elbow and pipe bending integrated forming device according to claim 1, characterized in that, The unloading liner (9) slides along an arc path. Both the left mold (2) and the right mold (3) are equipped with a swinging drive rod (11). The drive rod (11) is fixedly connected to the unloading liner (9). The drive rod (11) can drive the unloading liner (9) to slide along the central axis of the stamping groove (4).

3. The fully automatic elbow and pipe bending integrated forming device according to claim 1, characterized in that, A magnetic strip (12) is embedded on the surface of the unloading liner (9), and the magnetic strip (12) is used to attract the semi-circular bend (7).

4. The fully automatic elbow and pipe bending integrated forming device according to claim 1, characterized in that, The two stamping grooves (4) are symmetrically arranged. The left mold (2) and the right mold (3) are each provided with two sets of positioning posts (13). The positioning posts (13) are located on the adjacent sides of the left mold (2) and the right mold (3). The two sets of positioning posts (13) are respectively arranged on both sides of the extension direction of the stamping groove (4) and are used to position the two sides of the material sheet. Each set of positioning posts (13) includes several positioning posts (13) arranged along the extension direction of the stamping groove (4). The positioning area (1301) is formed between the two sets of positioning posts (13), and the positioning area (1301) is used to position the material piece at the opening of the stamping groove (4).

5. The fully automatic elbow and pipe bending integrated forming device according to claim 4, characterized in that, The frame (1) is provided with a workbench (101). The intermediate mold (5), the left mold (2) and the right mold (3) are all slidably connected to the top surface of the workbench (101). The end of the stamping 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 abut against and be positioned on the top surface of the workbench (101).

6. The fully automatic elbow and pipe bending integrated forming device according to claim 4, characterized in that, The intermediate mold (5) has two sets of corresponding positioning holes (501) on both sides of the molding block (6). Each set of positioning holes (501) includes several positioning holes (501) arranged along the extension direction of the molding block (6). The positioning pin (13) is positioned and engaged with the positioning holes (501) in a one-to-one correspondence.

7. The fully automatic elbow and pipe bending integrated forming device according to claim 4, characterized in that, The frame (1) is equipped with a punch head (14) that is raised and lowered at the top. The bottom outer periphery of the punch head (14) has a punching inclined surface (1401) that extends inclined toward the axis. The intermediate mold (5) is located below the punch head (14). The forming blocks (6) are provided on both sides of the intermediate mold (5) along the horizontal. Both forming blocks (6) have a pressure-bearing inclined surface (601) that can slide with the punching inclined surface (1401). The punch head (14) is configured such that after it is lowered, it pushes the two punching inclined surfaces (1401) with the help of the punching inclined surface (1401) so that the two forming blocks (6) extend into the punching groove (4) and form a semi-circular bent tube (7).

8. A fully automatic elbow and pipe bending integrated forming process, using the fully automatic elbow and pipe bending integrated forming device according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1, Loading: Insert the two pieces into the positioning areas (1301) of the left mold (2) and the right mold (3) respectively, and make one end of the piece abut against the top surface of the worktable (101); S2, Stamping: Move the left die (2) and right die (3) until the two pieces of material abut against the forming block (6), and lower the stamping head (14) so ​​that the forming block (6) moves horizontally outward and presses the pieces of material into the stamping groove (4). The semi-circular bent tube (7) is formed by the cooperation of the forming block (6) and the unloading inner liner (9). S3, Unloading: The forming block (6) is moved away from the unloading inner liner plate (9) to the reset position. The intermediate 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 towards each other until they are connected. The two semi-circular bends (7) form the bend (8). The unloading inner liner plate (9) of the left mold (2) and the right mold (3) are driven to slide along the stamping groove (4) to move and weld the bend (8). Finally, the left mold (2), the right mold (3) and the intermediate mold (5) are moved and reset.

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