Elbow bending pipe forming processing equipment and method

Abstract

The invention relates to the technical field of profile processing, and specifically proposes an elbow bend pipe forming processing equipment and method; the equipment comprises a workbench, on which a lower die mechanism and an upper die mechanism arranged in cooperation with the lower die mechanism are installed, the lower die mechanism comprises a forming die fixed on the workbench, and the forming die is cooperated with a material guide support ring for guiding material loading and unloading; a material switching mechanism for switching fan-shaped ring-shaped sheet for loading and switching formed semicircular elbows for unloading is arranged at the arc center of the material guide support ring; the upper die mechanism comprises a forming convex die driven by vertical stamping and formed in cooperation with a die groove; the equipment provided by the invention can complete a series of automated and continuous operations of stamping positioning, stamping forming, synchronous material loading and unloading, and transfer and transportation of finished products during the stamping forming process of semicircular elbows, thereby greatly improving production efficiency, reducing manual operation, and avoiding operation risks.

Description

Technical Field

[0001] The invention relates to the technical field of profile processing, and specifically proposes an elbow bend pipe forming processing device and method. Background Art

[0002] Elbows can be formed by integral casting, straight pipe bending, or butt welding to meet certain usage requirements. In the process of processing and manufacturing elbows formed by butt welding, the following processing technology can be used: select steel sheets with the same thickness as the wall thickness of the elbows, and cut the steel sheets into the required size. Fig.10 The fan ring-shaped sheet shown on the left in the figure is then punched and formed by a punching machine equipped with a corresponding bending tube forming punching die to obtain a fan ring-shaped sheet as shown in the figure. Fig.10 The semicircular elbow structure shown on the right side of the middle is finally formed by aligning and splicing the two semicircular elbows through a welding machine, thereby obtaining a complete elbow elbow structure.

[0003] Under the existing technology, in the process of stamping and forming the fan ring-shaped sheet, because only a single-process mold is required for single-time stamping, most of the stamping manufacturing is completed by manual loading and unloading and simple stamping equipment. However, this production process obviously has the following disadvantages:

[0004] 1) The fan-shaped ring sheet itself is made of steel plate material, which is heavy. In addition, the placement of the sheet needs to be manually adjusted during manual loading to ensure positioning and stamping. In the process of mass production, manual loading and unloading is required frequently. Therefore, the manual loading and unloading method is time-consuming, labor-intensive and inefficient.

[0005] 2) There are great operational risks when manual loading and unloading is used for stamping operations, and when stamping manufacturing is carried out in automatic stamping mode in order to improve stamping efficiency, the operational risks will be greatly increased. Summary of the invention

[0006] In order to solve the above problems, the present invention provides an elbow bend pipe forming processing device and method, which are used to solve the problems mentioned in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve: an elbow bending tube forming processing equipment, including a workbench, on which is equipped a lower mold mechanism and an upper mold mechanism arranged in coordination with the lower mold mechanism.

[0008] The lower mold mechanism includes a molding die fixed on a workbench, the molding die is provided with a die groove with a semicircular cross-section and extending horizontally along the center line of the arc, and the two extending ends of the die groove on the molding die are open; the upper end surface of the molding die is provided with positioning bar assemblies corresponding to the two circular ring edges of the die groove.

[0009] The forming die is equipped with a material guide support ring for guiding material loading and unloading; the material guide support ring is a fan ring structure arranged concentrically with the center of the arc of the die groove; the material guide support ring includes a No. 1 support ring and a No. 2 support ring, both of which are arc-shaped and concentrically arranged, and unloading guide grooves are symmetrically arranged between the two bottoms located on the same side ends of the No. 1 support ring and the No. 2 support ring, and the two unloading guide grooves are fixedly installed on the two open side wall ends of the die groove on the forming die in a one-to-one manner; an arc-shaped No. 1 limit stopper is concentrically fixedly installed on the upper end face of the No. 1 support ring, and an arc-shaped No. 2 limit stopper is concentrically fixedly installed on the upper end face of the No. 2 support ring.

[0010] A material switching mechanism for switching the fan-shaped material sheet for loading and the formed semicircular elbow for unloading is arranged at the arc center of the material guide support ring; a unloading window is arranged between two unloading guide grooves on the material guide support ring, and a finished product conveyor is arranged below the unloading window on the workbench; the upper mold mechanism includes a forming punch driven by a vertical stamping and formed in cooperation with the die groove.

[0011] Preferably, a cavity is provided at the bottom end of the molding die; a push rod assembly is installed in the cavity; the push rod assembly includes a plurality of push rods distributed along the arc center line of the die groove and vertically elastically installed, and the push rods vertically penetrate from the cavity to the die groove; a matching groove is provided at the top end of the push rod that can overlap with the curved surface of the inner wall of the die groove.

[0012] Preferably, the material switching mechanism includes a switching plate which is rotatably driven along the central axis of the material guide and support ring, and a loading switching block for switching the fan-shaped material sheet placed on the upper end surface of the material guide and support ring is fixed at one end in the length direction of the switching plate, and a unloading switching plate for switching the unloading of the semicircular bent pipe formed in the die groove is fixed at the other end.

[0013] Preferably, the arc radius of the No. 1 support ring is smaller than the arc radius of the No. 2 support ring; the loading toggle block is in the shape of an arc plate concentrically arranged with the No. 1 support ring, the loading toggle block is located above the supporting surface of the No. 1 support ring, and the loading toggle block protrudes on both sides of the rotating plate in the circumferential direction.

[0014] Preferably, the unloading toggle plate includes two horizontally distributed toggle arms; when the unloading toggle plate rotates with the toggle plate, the bottom edge of the toggle arm moves and contacts with the inner wall of the die groove, and the push rod avoids and passes between the two toggle arms.

[0015] Preferably, the guide groove of the unloading guide groove is an arc groove structure with a semicircular cross-section and extending along the arc center line, the guide groove arc center line of the unloading guide groove and the arc center line of the die groove are located on the same circular ring line, and the guide groove radius of the unloading guide groove is greater than the radius of the die groove.

[0016] Preferably, the positioning stop bar assembly includes an arc-shaped positioning stop bar used for elastic clamping and positioning of a semicircular ring-shaped sheet. The two positioning stop bars in the two positioning stop bar assemblies and the No. 1 limit stop bar and the No. 2 limit stop bar are equidistantly arranged in the radial direction about the arc center line of the die groove, and the radial spacing between the two positioning stop bars is smaller than the radial spacing between the No. 1 limit stop bar and the No. 2 limit stop bar.

[0017] In addition, the present invention also provides a method for forming an elbow and a bent pipe, which is specifically as follows: S1, placing a sheet for forming on a supporting surface of a material guide ring.

[0018] S2. The placed blank is transferred to the upper end surface of the forming die through the material transfer mechanism, so that the blank is completely above the die groove.

[0019] S3. Through the stamping of the upper die mechanism, the blank is stamped and formed under the cooperation between the forming punch and the forming die.

[0020] S4. Through the reverse toggle of the material transfer mechanism, the semicircular elbow formed by the toggle falls out from the unloading window.

[0021] S5. The semicircular elbows are automatically conveyed by the finished product conveyor after unloading.

[0022] The above technical scheme has the following advantages or beneficial effects: The present invention provides an elbow and pipe forming processing equipment and method, which is equipped with a material guide ring for guiding the loading and unloading of materials on the basis of the existing stamping die structure and the stamping mechanism, and is equipped with a material switching mechanism for loading and unloading, which can simultaneously complete the loading and pushing of fan-shaped sheets and the unloading and pushing of semi-circular elbows, and the operation rotation efficiency is greatly improved, and the zoning isolation of the loading and unloading area and the stamping area is realized, avoiding operational risks. In addition, in the process of pushing the sheet, automatic stamping positioning can be achieved through conveying guidance, and the semi-circular elbow can be automatically transferred and conveyed after stamping and forming; the equipment provided by the present invention can complete a series of automated and continuous operations of stamping positioning, stamping and forming, synchronous loading and unloading, and transfer and conveying of finished products in the stamping and forming process of semi-circular elbows, which greatly improves the production efficiency, reduces manual operation, and avoids operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of an elbow bending pipe forming processing equipment provided by the present invention.

[0025] Figure 2 It is a front view of an elbow bending pipe forming processing equipment provided by the present invention.

[0026] Figure 3 It is a three-dimensional schematic diagram of the assembly structure of the lower die mechanism, the material guide support ring and the material transfer mechanism.

[0027] Figure 4 yes Figure 3 A top view of the assembly structure shown.

[0028] Figure 5 It is a three-dimensional structural schematic diagram of the lower mold mechanism.

[0029] Figure 6 It is a three-dimensional sectional structural diagram of the lower mold mechanism.

[0030] Figure 7 It is a three-dimensional structural diagram of two positioning baffle assemblies.

[0031] Figure 8 It is a three-dimensional structural diagram of the ejector assembly.

[0032] Fig. 9 It is a three-dimensional structural diagram of the material guide support ring.

[0033] Fig.10 This is a diagram of the processing and forming changes of the semicircular elbow fan ring sheet.

[0034] Fig.11 The present invention provides a method flow chart of an elbow bending pipe forming processing method.

[0035] In the figure: 1, workbench; 11, finished product conveyor; 2, lower die mechanism; 21, forming die; 211, die groove; 212, slide; 213, cavity; 22, positioning bar assembly; 221, slider; 222, positioning bar; 223, spring fixing plate; 224, side clamp spring; 23, ejector assembly; 231, ejector base; 232, ejector; 2321, matching groove; 233, return spring; 3, Material guide support ring; 31. Support ring No. 1; 311. Limit stop bar No. 1; 32. Support ring No. 2; 321. Limit stop bar No. 2; 33. Unloading guide groove; 34. Unloading window; 4. Material transfer mechanism; 41. Turning motor; 42. Turning plate; 43. Loading toggle block; 44. Unloading toggle plate; 441. Toggle arm; 5. Upper die mechanism; 51. Support frame; 52. Stamping cylinder; 53. Upper die seat; 54. Forming punch. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] like Figure 1 and Figure 2 As shown, an elbow bending and pipe forming processing equipment includes a workbench 1, on which a lower mold mechanism 2 and an upper mold mechanism 5 matched with the lower mold mechanism 2 are assembled.

[0039] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the lower die mechanism 2 includes a forming die 21 fixed on the workbench 1 by screws, and the forming die 21 is provided with a die groove 211 with a semicircular cross section and extending horizontally along the center line of the arc, and the two extending ends of the die groove 211 on the forming die 21 are open. Fig.10 The fan-shaped sheet on the left side is stamped into a semicircular elbow on the right side, and the elbow elbow is butt-welded and spliced ​​through two semicircular elbows. In order to ensure that any two semicircular elbows can be butt-welded and spliced ​​without distinction, the upper end surface of the forming die 21 is provided with positioning bar assemblies 22 at the two circular edge lines of the die groove 211. It should be noted that the two positioning bar assemblies 22 are specifically as follows: Figure 7 As shown, there are differences in size, but the functions are the same, so there is no difference in naming. On the upper end surface of the forming die 21, there are corresponding slide grooves 212 arranged relative to the two positioning bar assemblies 22. The guiding directions of the two slide grooves 212 are arranged radially along the arc center line of the die groove 211, and the two slide grooves 212 are arranged centrally with respect to the open side wall ends of the forming die 21 located at both ends of the die groove 211; the positioning bar assembly 22 includes a slider 221 horizontally slidably installed in the slide groove 212, and an arc-shaped positioning bar 222 is horizontally welded on the slider 221. A spring fixing plate 223 is fixed to the side wall end of the forming die 21 at the entrance of the slide groove 212 by bolts, and a side clamp spring 224 is welded on the spring fixing plate 223, and the other end of the side clamp spring 224 is welded to the slider 221; the arc edge contour of the two positioning bar 222 close to the die groove 211 is consistent with the arc edge contour of the two positioning bar 222. Fig.10 The two arc edge contours on the middle fan ring-shaped sheet correspond to each other. When the fan ring-shaped sheet to be formed is placed on the upper end surface of the forming die 21, under the elastic force of the two side clamping springs 224, the two arc side edges of the fan ring-shaped sheet will be correspondingly clamped between the two positioning strips 222, and the sheet will be placed in the center relative to the die groove 211 in the radial direction.

[0040] like Figure 5 , Figure 6 and Figure 8As shown, in addition, in order to facilitate the separation of the semicircular elbow from the cavity of the die groove 211 after stamping, in this embodiment, a cavity 213 is provided at the bottom end of the forming die 21; a push rod assembly 23 is assembled in the cavity 213; the push rod assembly 23 includes a push rod base 231 fixed to the forming die 21 at the end of the cavity 213 by screws, and three push rods 232 are vertically slidably mounted on the push rod base 231, and the three push rods 232 are evenly distributed along the arc center line of the die groove 211, and the push rods 232 are separated from the cavity. 213 vertically penetrates into the die groove 211, and a return spring 233 is sleeved on the push rod 232, and the two ends of the return spring 233 are respectively welded to the push rod base 231 and the push rod 232; in order to cooperate with the stamping forming of the semicircular elbow, a matching groove 2321 that can coincide with the inner wall curved surface of the die groove 211 is provided at the top of the push rod 232. In addition, in order to make the matching groove 2321 accurately coincide with the inner wall curved surface of the die groove 211, the push rod 232 and the push rod base 231 are slidably assembled by spline matching.

[0041] like Figure 1 and Figure 2 As shown, the upper die mechanism 5 includes a support frame 51 welded on the surface of the workbench 1, a stamping cylinder 52 vertically fixed to the top of the support frame 51 by bolts, an upper die base 53 horizontally fixed to the output rod of the stamping cylinder 52 by screws, and a forming punch 54 fixed to the bottom end of the upper die base 53 by screws. The forming punch 54 is arranged in conjunction with the forming die 21 and is located directly above the die groove 211.

[0042] like Figure 3 , Figure 4 and Fig. 9As shown, the forming die 21 is equipped with a material guide ring 3 for guiding material loading and unloading; the material guide ring 3 is a fan ring structure arranged concentrically with the center of the arc of the die groove 211; the material guide ring 3 includes a first support ring 31 and a second support ring 32, both of which are arc plate-shaped and concentrically arranged, the arc radius of the first support ring 31 is smaller than the arc radius of the second support ring 32, and the upper end surface of the first support ring 31 and the upper end surface of the second support ring 32 are at the same level. The first support ring 31 and the second support ring 32 are symmetrically provided with a discharge guide groove 33 between the two bottoms located at the same side ends. The two discharge guide grooves 33 are fixedly mounted on the two opening side wall ends of the die groove 211 on the forming die 21 by screws corresponding to each other. The discharge guide groove 33 is a circular arc groove structure with a semicircular cross section and extending along the arc center line. The arc center line of the discharge guide groove 33 is aligned with the arc center line of the die groove 211. The lines are located on the same circular line, and the discharge guide groove 33 is used to guide the discharge and conveying of the semicircular elbow that has completed stamping. In order to reduce the resistance of the semicircular elbow to pass through the discharge guide groove 33, in this embodiment, the guide groove radius of the discharge guide groove 33 is greater than the radius of the die groove 211, that is, the radius of the discharge guide groove 33 is enlarged relative to the radius of the die groove 211, and the radius difference is in the range of 0.5mm-1mm. In addition, the guide groove surface of the discharge guide groove 33 is tangent to the No. 1 support ring 31 and the No. 2 support ring 32; a discharge window 34 is provided on the guide support ring 3 between the two discharge guide grooves 33, and a finished product conveyor 11 is provided on the workbench 1 below the discharge window 34. In this embodiment, the finished product conveyor 11 is specifically an existing belt conveyor, and the semicircular elbow that slips down from the discharge guide groove 33 will directly fall on the finished product conveyor 11, thereby completing the automatic conveying of the product.

[0043] like Figure 3 , Figure 4 and Fig. 9As shown, the upper end surface of the No. 1 support ring 31 is fixedly mounted with an arc-shaped No. 1 limit stop bar 311 by bolts, and the upper end surface of the No. 2 support ring 32 is fixedly mounted with an arc-shaped No. 2 limit stop bar 321 by bolts. The fan-shaped ring-shaped sheet to be formed can be placed on the upper end surfaces of the No. 1 support ring 31 and the No. 2 support ring 32. In this embodiment, in order to facilitate the transfer of the fan-shaped ring-shaped sheet placed on the upper end surfaces of the No. 1 support ring 31 and the No. 2 support ring 32 to the upper end surface of the forming die 21, the upper end surface of the forming die 21 is flush with the upper end surface of the No. 1 support ring 31 (No. 2 support ring 32). In addition, the two positioning bars 222 and the No. 1 limiting bar 311 and the No. 2 limiting bar 321 located in the two positioning bar assemblies 22 are equidistantly arranged in the radial direction about the arc center line of the die groove 211, and the radial spacing between the two positioning bars 222 is smaller than the radial spacing between the No. 1 limiting bar 311 and the No. 2 limiting bar 321. When the fan-shaped annular sheet is placed on the upper end surface of the molding die 21, it is positioned and clamped between the two positioning bars 222, and the radial spacing between the No. 1 limiting bar 311 and the No. 2 limiting bar 321 is relatively large, so it is easier to place the fan-shaped annular sheet on the upper end surface of the guide ring 3 between the No. 1 limiting bar 311 and the No. 2 limiting bar 321.

[0044] like Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, a material switching mechanism 4 for switching the fan-shaped ring-shaped sheet for loading and switching the formed semicircular elbow for unloading is arranged at the arc center of the material guide support ring 3, and the material switching mechanism 4 is matched with the material guide support ring 3. The material transfer mechanism 4 includes a dial motor 41 located at the center of the arc of the material guide ring 3 and a dial plate 42 fixed to the output shaft of the dial motor 41 by bolts. The bottom end of the forming die 21 is provided with a fixed end fixedly assembled with the workbench 1, and the dial motor 41 is fixedly installed on the fixed end of the forming die 21 by bolts. Driven by the dial motor 41, the dial plate 42 can rotate around the arc center axis of the die groove 211; the dial plate 42 is in the shape of a long plate, and a loading dial block 43 is welded at one end of the length direction of the dial plate 42 for loading the fan-shaped material sheet placed on the upper end surface of the material guide ring 3, and a discharge dial plate 44 is welded at the other end for discharging the semicircular elbow formed in the die groove 211. The feeding toggle block 43 is in the shape of an arc plate which is arranged concentrically with the No. 1 support ring 31. The feeding toggle block 43 is located above the supporting surface of the No. 1 support ring 31. The bottom end of the feeding toggle block 43 is in moving contact with the upper end surface of the No. 1 support ring 31, and the feeding toggle block 43 is protruded on both sides of the rotating plate 42 in the circumferential direction. The two protruding side wall ends of the feeding toggle block 43 are both used as pushing ends for rotating and pushing the fan-shaped ring-shaped sheet. The protruding setting allows the fan-shaped ring sheet to be in a relatively centered position of the forming die 21 after being pushed. In addition, in order to form an avoidance position with the forming punch 54, the feeding toggle end and the connecting end of the rotating plate 42 connected thereto are both avoided from the upper area of ​​the die groove 211 during the rotation of the rotating plate 42. Figure 4 As shown; the unloading toggle plate 44 includes two horizontally distributed toggle arms 441; when the unloading toggle plate 44 rotates with the toggle plate 42, the bottom edge of the toggle arm 441 moves and contacts with the inner wall of the die groove 211, and the ejector rod 232 avoids passing between the two toggle arms 441.

[0045] In this embodiment, the toggle motor 41 is an existing servo motor with a self-locking mechanism. When the toggle motor 41 is in a suspended working state, its output shaft remains in a locked state, and the toggle plate 42 maintains a locked position state. Figure 4 As shown in the figure, the dial plate 42 is in the locked state. The dial plate 42 is rotated in a half-circle reciprocating manner. Therefore, regardless of forward or reverse rotation, the dial plate 42 is always in the locked state. Figure 4 The position shown is different only in that the two ends of the dial plate 42 are swapped, and a single half-circle rotation of the dial plate 42 can simultaneously complete the loading and pushing of the fan-shaped ring sheets and the unloading and pushing of the semicircular bent pipes (because only the fan-shaped ring sheets are loaded for the first time and there is no unloading, the first half-circle rotation is excluded).

[0046] like Fig.11As shown, in addition, the present invention also provides a method for forming an elbow bend pipe, which is as follows:

[0047] S1. Place the sheet for forming on the supporting surface of the guide ring 3 so that the fan-shaped sheet is between the first limit stop bar 311 and the second limit stop bar 321. It should be noted that if Figure 4 As shown, no matter whether the dial plate 42 is rotated clockwise or counterclockwise, the locking position of the dial plate 42 remains unchanged, and the loading toggle block 43 is either located at the left end or the right end of the dial plate 42, so the sheet placed on the guide ring 3 should be located at the guide ring 3. Figure 4 In the area between the two ends of the rotating plate 42, the placement of the blanks can be done manually or by a robot.

[0048] S2, the placed material sheet is transferred to the upper end surface of the forming die 21 by the material transfer mechanism 4, so that the material sheet is completely above the die groove 211. Specifically, as Figure 4 As shown, the feeding toggle block 43 is at the left end of the toggle plate 42. Driven by the toggle motor 41, the toggle plate 42 will rotate counterclockwise for half a circle. The feeding toggle block 43 will push the annular sheet of the fan counterclockwise during the rotation of the toggle plate 42. Under the common limiting guidance of the first limiting stop bar 311 and the second limiting stop bar 321, when the feeding toggle block 43 rotates to Figure 4 When the dial plate 42 is at the right end, the sheet will be pushed to the upper position of the forming die 21 and positioned and clamped. It should be noted that in order to facilitate pushing the sheet from between the first limit stop bar 311 and the second limit stop bar 321 to between the two positioning stop bars 222, both ends of the positioning stop bars 222 are chamfered.

[0049] S3, through the stamping of the upper die mechanism 5, the sheet is stamped and formed under the cooperation between the forming convex die 54 and the forming concave die 21. Specifically, after the fan-shaped sheet is positioned and clamped between the two positioning stop bars 222, the stamping cylinder 52 is started to drive the forming convex die 54 to stamp downward, and the fan-shaped sheet is stamped and formed between the forming convex die 54 and the concave die groove 211, so that the stamped sheet is as shown in FIG. Fig.10 The semicircular elbow structure shown on the right side, after stamping, is automatically demolded and separated from the die groove 211 by the push of multiple ejector pins 232. It should be noted that after the sheet is loaded and before the stamping is completed, the next sheet to be formed has been placed on the guide ring 3.

[0050] S4, by reversely shifting the material shifting mechanism 4, the semicircular elbow formed by shifting falls out of the discharge window 34. Specifically, based on step S2, the shifting motor 41 drives the shifting plate 42 to rotate half a circle clockwise. During the rotation process, the discharge shifting plate 42 rotates and pushes the semicircular elbow formed in the die groove 211, pushes it through the discharge guide groove 33 on the right side, and finally falls out of the discharge window 34.

[0051] S5, the finished product conveyor 11 automatically conveys the semicircular elbow after unloading.

[0052] The present invention provides an elbow and pipe forming processing equipment, which is equipped with a material guide ring 3 for guiding loading and unloading on the basis of an existing stamping die structure and a stamping mechanism, and is equipped with a material switching mechanism 4 for loading and unloading, which can synchronously complete the loading and pushing of fan-shaped sheets and the unloading and pushing of semicircular elbows, greatly improving the operation rotation efficiency, and realizing the zoning isolation of the loading and unloading area and the stamping area, avoiding the operation risk, in addition, in the process of pushing the sheet, automatic stamping positioning can be achieved through conveying guidance, and the semicircular elbow can be automatically transferred and conveyed after stamping and forming; the equipment provided by the present invention can complete a series of automated and continuous operations of stamping positioning, stamping and forming, synchronous loading and unloading, and transfer and conveying of finished products in the stamping and forming process of the semicircular elbow, greatly improving the production efficiency, reducing manual operation, and avoiding the operation risk.

[0053] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, 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, and therefore should not be understood as a limitation on the present invention.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. An elbow bending pipe forming processing equipment, characterized in that: The invention comprises a workbench (1), on which a lower die mechanism (2) and an upper die mechanism (5) arranged in cooperation with the lower die mechanism (2) are mounted; wherein: The lower die mechanism (2) comprises a forming die (21) fixed on the workbench (1); the forming die (21) is provided with a die groove (211) having a semicircular cross-section and extending horizontally along the arc centerline, and the two extended ends of the die groove (211) on the forming die (21) are open; the upper end surface of the forming die (21) is provided with positioning bar assemblies (22) at two circular edge lines located on the die groove (211); The forming die (21) is equipped with a material guide ring (3) for guiding material loading and unloading; the material guide ring (3) is a fan ring structure arranged concentrically with the center of the arc of the die groove (211); the material guide ring (3) comprises a first support ring (31) and a second support ring (32) both of which are arc plate-shaped and concentrically arranged; a material unloading guide groove (33) is symmetrically arranged between two bottoms located at the same side ends of the first support ring (31) and the second support ring (32); the two material unloading guide grooves (33) are fixedly mounted on the two opening side wall ends of the die groove (211) on the forming die (21) in a one-to-one corresponding manner; a first arc-shaped limit stop bar (311) is fixedly mounted concentrically on the upper end surface of the first support ring (31), and a second arc-shaped limit stop bar (321) is fixedly mounted concentrically on the upper end surface of the second support ring (32); A material switching mechanism (4) for switching a fan-shaped material sheet for loading and switching a formed semicircular elbow for unloading is provided at the center of the circular arc of the material guide support ring (3); a discharge window (34) is provided between two discharge guide grooves (33) on the material guide support ring (3); a finished product conveyor (11) is provided below the discharge window (34) on the workbench (1); and the upper die mechanism (5) comprises a forming convex die (54) driven by a vertical punch and formed in cooperation with the die groove (211).

2. The elbow bending pipe forming processing equipment according to claim 1 is characterized in that: A cavity (213) is provided at the bottom end of the forming die (21); a push rod assembly (23) is installed in the cavity (213); the push rod assembly (23) comprises a plurality of push rods (232) distributed along the arc center line of the die groove (211) and vertically elastically installed, the push rods (232) vertically passing through the cavity (213) into the die groove (211); and a matching groove (2321) is provided at the top end of the push rod (232) that can overlap with the inner wall curved surface of the die groove (211).

3. The elbow bending pipe forming processing equipment according to claim 2 is characterized in that: The material switching mechanism (4) comprises a switching plate (42) rotatably arranged along the central axis of the guide ring (3), a loading switching block (43) for switching the fan-shaped sheet placed on the upper end surface of the guide ring (3) for loading is fixed at one end in the length direction of the switching plate (42), and a discharging switching plate (44) for switching the semicircular elbow formed in the die groove (211) for discharging is fixed at the other end.

4. The elbow bending pipe forming processing equipment according to claim 3 is characterized in that: The arc radius of the No. 1 support ring (31) is smaller than the arc radius of the No. 2 support ring (32); the loading toggle block (43) is in the shape of an arc plate arranged concentrically with the No. 1 support ring (31); the loading toggle block (43) is located above the supporting surface of the No. 1 support ring (31), and the loading toggle block (43) is protruding relative to both sides of the toggle plate (42) in the circumferential direction.

5. The elbow bending pipe forming processing equipment according to claim 4 is characterized in that: The unloading toggle plate (44) comprises two horizontally distributed toggle arms (441); when the unloading toggle plate (44) rotates along with the toggle plate (42), the bottom edge of the toggle arm (441) moves and contacts with the inner wall of the die groove (211), and the ejector rod (232) avoids passing between the two toggle arms (441).

6. The elbow bending pipe forming processing equipment according to claim 1 is characterized in that: The guide groove of the discharge guide groove (33) is an arc groove structure with a semicircular cross section and extending along the arc center line, the guide groove arc center line of the discharge guide groove (33) and the arc center line of the die groove (211) are located on the same circular ring line, and the guide groove radius of the discharge guide groove (33) is greater than the radius of the die groove (211).

7. The elbow bending pipe forming processing equipment according to claim 6 is characterized in that: The positioning stop bar assembly (22) comprises an arc-shaped positioning stop bar (222) for elastically clamping and positioning a semicircular ring-shaped sheet. The two positioning stop bars (222) in the two positioning stop bar assemblies (22) and the first limiting stop bar (311) and the second limiting stop bar (321) are arranged equidistantly in the radial direction with respect to the arc center line of the die groove (211), and the radial spacing between the two positioning stop bars (222) is smaller than the radial spacing between the first limiting stop bar (311) and the second limiting stop bar (321).

8. The elbow bending and pipe forming processing equipment according to any one of claims 1 to 7, characterized in that: The method for forming the elbow bend using the above equipment is as follows: S1, placing the sheet to be formed on the supporting surface of the guide ring (3); S2, transferring the placed material sheet to the upper end surface of the forming die (21) through the material transfer mechanism (4), so that the material sheet is completely above the die groove (211); S3, through the stamping of the upper die mechanism (5), the blank is stamped and formed under the cooperation between the forming convex die (54) and the forming concave die (21); S4, by reversing the material transfer mechanism (4), the semicircular elbow formed by the material transfer mechanism (4) falls out from the discharge window (34); S5. Automatically conveying the semicircular elbow after unloading by the finished product conveyor (11).

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