A pipe bending and ring integrated machine for pipe fittings

Abstract

A pipe bending and sleeve ringing machine includes a pipe cutting component, a bending component, a discharging component, and a sleeve ring mechanism which are sequentially arranged. The pipe cutting component cuts the pipe into pipes of a specified length, and the cut pipes enter the bending component for bending. After the pipes are bent into a U shape, they are unloaded by the discharging component to the sleeve ring mechanism for sleeve ringing. It can complete all the processes of bending and sleeve ringing of U-shaped pipes on one device, reduce the handling links, have high production efficiency, and occupy less area. Since the internal cutting knife is used for rotating and chipless cutting, no chips will be generated. The bent U-shaped elbow workpiece does not need to be cleaned and can be directly degreased, achieving zero discharge of cleaning liquid, which is more environmentally friendly. Moreover, the workpiece is evenly stressed during cutting, and no oblique cuts will be generated. When bending, a follower component is added to reduce the wear of the outer wall of the metal pipe fitting, effectively improving the quality of the bent metal pipe fitting.

Description

Technical Field

[0001] The invention relates to a pipe bending and collar integrated machine. Background Art

[0002] The existing pipe bending and ring making are completed by two devices, a pipe bending machine and a ring making machine. Moreover, after the pipe bending machine makes a small elbow, it needs to be deburred, cleaned and dried by a cleaning machine before the welding ring can be put on the U-shaped elbow by the ring making machine. Therefore, three devices are required to complete the whole process of pipe bending and ring making. Not only is the production cost high, but the production efficiency is low and the floor space is also large.

[0003] In addition, during the pipe bending process, the U-shaped metal elbow is cut with a serrated blade. During the cutting process, due to the thickness of the blade itself, at least twice the thickness of the serrated blade wall is wasted when each U-shaped metal elbow is cut. Moreover, the serrated blade cutting process will generate a large amount of metal chips, which not only brings a lot of trouble to the cleaning of the work site, but also a large amount of metal chips are attached to the U-shaped metal elbow, making it impossible to proceed to the next step of welding the workpiece. Therefore, a cleaning step must be added, and the cleaning fluid will be discharged. More importantly, the chips generated may cause harm to the operator's body.

[0004] The bending device of the pipe generally includes a driving mechanism, a bending die and a metal pipe support plate. The metal pipe is placed on the metal pipe support plate and clamped by the bending die. The driving mechanism drives the bending die to rotate to bend the metal pipe. Since the metal pipe support plate is fixed, the metal pipe will move on the metal pipe support plate during the bending process, and friction will be generated between the two. The metal pipe will be worn or even thinned due to friction, affecting the quality of the product after bending. At the same time, the energy consumption of the device will be increased due to friction. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and propose a pipe bending and ring integrated machine for pipe fittings, so that the pipe bending and ring integration can be performed.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A pipe bending and ringing integrated machine for pipe fittings comprises a pipe cutting component, a bending component, a discharging component and a ringing mechanism which are arranged in sequence. The cutting component cuts the pipe fitting into pipes of specified lengths, the cut pipes enter the bending component for bending, and after the pipes are bent into a U shape, they are unloaded by the discharging component to the ringing mechanism for ringing.

[0008] Preferably, a bent pipe degreasing mechanism is provided before the unloading component to clean and degrease the bent pipe of the unloading component, and then the cleaned bent pipe is sent to the collaring mechanism for collaring.

[0009] The above-mentioned pipe cutting component includes a swing cutting mechanism and a cutter. The swing cutting mechanism includes a driver, a synchronous transmission mechanism, a rotating shaft, an eccentric piece, a chuck, an end cover, a swing shaft, and a tool holder. The rotating shaft, the eccentric piece, the chuck, the end cover, and the swing shaft are in two groups, and each group is symmetrically arranged at the left and right entry position of the pipe. The chuck is fixed at one end of each rotating shaft, the end cover is fixed on the outside of the chuck, and one side of the eccentric piece is axially movably connected to the chuck; the swing shaft is supported by the end cover, and the swing shaft is connected to the other side of the eccentric piece through a radial sliding mechanism. The inner end of the swing shaft is axially limited by the chuck, and the outer ends of the two swing shafts roll to support the tool holder; the other ends of the two rotating shafts are connected to the driver through a synchronous transmission mechanism; the cutter is arranged at the pipe inlet of the tool holder. When not cutting, the cutter is separated from the pipe. When cutting, the cutter swings with the tool holder and cuts into the pipe.

[0010] Preferably, the tube cutting component is also provided with an eccentric adjustment mechanism, which includes an eccentric driver, an axial movement mechanism, and a push plate. The push plate is fixed to the eccentric member. The eccentric driver axially moves the push plate through the axial movement mechanism. The push plate drives the eccentric member to move, thereby driving the swing shaft connected thereto to move radially, thereby changing the radial position of the tool holder.

[0011] The above-mentioned axial movement mechanism is a gear and rack mechanism, the rack is fixed on the push plate, the gear is fixed on the motor shaft, and the gear drives the rack to move and drives the push plate to move axially.

[0012] The one side of the eccentric piece is axially movably connected to the chuck in a specific manner that an axial protrusion is provided on the eccentric piece, an axial groove is provided on the chuck, and the axial protrusion is inserted into the axial groove.

[0013] The radial sliding mechanism between the above-mentioned swing shaft and the other side of the eccentric member can be more specifically as follows: a groove oblique to the shaft is provided on the end of the swing shaft, an oblique groove matching the groove at the end of the swing shaft is provided on the other end of the eccentric member, and the oblique groove of the eccentric member is slidably inserted into the groove of the swing shaft. In this way, when the eccentric member moves axially, the swing shaft moves radially due to the inclined surface of the oblique groove of the eccentric member pressing the corresponding inclined surface of the swing shaft.

[0014] The above-mentioned pipe bending mechanism includes a driver, a bending die assembly, a bending frame, and a support seat. The bending die assembly is rollingly connected to the bending frame. The bending die assembly is provided with slots and unloading holes for clamping the workpiece. The driver is installed on the bending frame. The driver rotates the bending die assembly to bend the workpiece into shape. The side of the bending frame is installed on the support seat; the follower component includes a support die, a follower plate driver, and a follower plate. The support die is provided with a groove for supporting the pipe fitting. The follower plate driver connects and moves the follower plate, and the follower plate is connected to the fuselage through a guide mechanism.

[0015] Preferably, a lifter is also provided, which is mounted on the follower plate and connects and lifts the supporting die, so that the height of the supporting die can be adjusted so that the center of its groove is consistent with the center of the slot hole of the bending die assembly.

[0016] Preferably, a material guide pipe is further provided, wherein the material blocking pipe is mounted on the follower plate, and the center of the material blocking pipe is consistent with the center of the ejector groove.

[0017] Preferably, the bending mechanism may further include a bending frame height adjustment mechanism, which includes an equal height block and a slider and rail guide mechanism, wherein the equal height block is arranged between the top surface of the support seat and the top of the bending frame.

[0018] Preferably, the slider rail guide mechanism is arranged between the bending frame and the vertical surface of the support seat, so that the bending frame can move smoothly up and down relative to the support seat.

[0019] In order to facilitate the replacement of equal height blocks, a bending frame support mechanism is also set up, which includes a tightening screw and a tightening screw seat. The tightening screw seat is fixed on the top surface of the support seat, and the tightening nut is fixed on the tightening screw seat. The tightening screw is threadedly connected to the tightening nut and passes through the tightening screw seat to be connected to the bending frame.

[0020] Preferably, a full-circle component and a feeding component are arranged in front of the pipe cutting component, the full-circle component comprises a full-circle wheel bracket, an upper full-circle wheel and a lower full-circle wheel, the upper full-circle wheel and the lower full-circle wheel are respectively rotatably fixed on the full-circle wheel bracket, grooves are respectively arranged on the upper and lower full-circle wheels, and the cross-section of the two grooves at opposite positions is a circle consistent with the diameter of the pipe to be bent; the feeding component comprises a clamping component and a driving component for driving the clamping component, the clamping component clamps and releases the pipe, and after the clamping component clamps the pipe, the driving component moves the pipe to the pipe cutting component.

[0021] Preferably, a flaring component is provided before the ejecting component to flare the cut pipe.

[0022] Preferably, a channel component is arranged behind the flaring component, and the channel component is used to move the expanded pipe fitting to the same height as the ejecting rod of the ejecting component, so that the ejecting rod can eject the pipe fitting conveniently and accurately.

[0023] Compared with the prior art, the advantages of the present invention are: it can complete all the processes of bending and sleeve of U-shaped tubes on one piece of equipment, reduce the handling links, have high production efficiency and occupy less area; since the internal cutting knife is used for rotating chipless cutting, no chips will be generated, and the bent U-shaped elbow workpiece does not need to be cleaned and can be directly degreased, thus achieving zero discharge of cleaning liquid, which is more environmentally friendly, and the workpiece is evenly stressed during cutting, and no oblique cuts will be generated; a follow-up component is added during bending, which reduces the wear of the outer wall of the metal pipe fittings and effectively improves the quality of the metal pipe fittings after bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a stereogram of an embodiment of the present invention.

[0025] Figure 2 It is a three-dimensional diagram of a full-circle component according to an embodiment of the present invention.

[0026] Figure 3 It is a three-dimensional view of the feeding clamping component according to an embodiment of the present invention.

[0027] FIG. 4 is a three-dimensional diagram of a cutting mechanism according to an embodiment of the present invention.

[0028] Figure 5 for Figure 4 Side view of the axis of rotation.

[0029] Figure 6 for Figure 4 Cross-sectional view of .

[0030] Figure 7 The figure shows the connection relationship among the rotating shaft, the eccentric piece, the chuck, the end cover and the swing shaft in the cutting mechanism of the embodiment of the present invention.

[0031] Figure 8 4 is a top view of the cutting mechanism according to an embodiment of the present invention.

[0032] Fig. 9 It is a three-dimensional diagram of the expansion mechanism according to an embodiment of the present invention.

[0033] Fig.10 It is a front view of the expansion mechanism of an embodiment of the present invention.

[0034] Fig.11 It is a three-dimensional view of a drawer type material channel component according to an embodiment of the present invention.

[0035] Fig.12 It is a three-dimensional view of a drawer plate of a drawer plate type material channel component according to an embodiment of the present invention.

[0036] Fig.13 This is a diagram showing the coordination between the material channel and the draw plate according to an embodiment of the present invention.

[0037] Fig.14 It is a three-dimensional diagram of the ejecting mechanism according to an embodiment of the present invention.

[0038] Fig.15 It is a three-dimensional diagram of a bending mechanism according to an embodiment of the present invention.

[0039] Fig.16 It is a three-dimensional diagram of the follower mechanism and the unloading mechanism of the bending mechanism according to an embodiment of the present invention.

[0040] Fig.17 It is a three-dimensional diagram of the follower mechanism of the bending mechanism according to an embodiment of the present invention.

[0041] Fig.18 It is a three-dimensional diagram of another direction of the embodiment of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] like Figure 1 As shown, a pipe bending and sleeve ringing integrated machine comprises a machine body 1, on which are arranged from right to left a rounding component 2 capable of straightening a metal pipe into a round shape, a feeding clamping component 3 capable of feeding a pipe of a specified length, a cutting component 4 for cutting the metal pipe to a fixed length, a flaring component 5 for expanding the metal pipe on both sides, a pushing component 6 for pushing the cut fixed-length pipe into the bending component, a bending device 7 for clamping and bending the metal pipe into a U shape, a core shaft in-and-out component 8, a follower component 9 for pushing the die to follow, and a unloading component 10 for unloading the bent pipe, a bending degreasing mechanism 11 for cleaning and degreasing the bent pipe, and a sleeve ring mechanism 12 for sleeve-fitting the cleaned bent pipe.

[0044] like Figure 2 As shown, the full-circle component 2 includes a full-circle wheel bracket 201, an upper full-circle wheel shaft 202 and a lower full-circle wheel shaft 203, an upper full-circle wheel 204 and a lower full-circle wheel 205, and a guide plate 206. The two ends of the upper full-circle wheel shaft 202 and the lower full-circle wheel shaft 203 are supported by the full-circle wheel bracket 201 respectively, and the upper and lower full-circle wheels 204 and 205 are respectively sleeved on the upper full-circle wheel shaft 202 and the lower full-circle wheel shaft 203 through bearings so as to be able to rotate. The upper and lower full-circle wheels 204 and 205 are respectively provided with grooves 2041, and the cross-section of the two grooves 2041 relative to each other is a circle, and the circle is the same as the diameter of the metal pipe fitting of the elbow.

[0045] The guide plate 206 is installed on the round wheel bracket 201, and a guide hole 2061 is provided on the guide plate 206. The metal pipe enters the grooves of the upper and lower round wheels through the guide hole 2061 to complete the circle.

[0046] like Figure 3 As shown, the feeding clamping component 3 includes a motor 301 , a motor mounting plate 302 , synchronous pulleys 303 and 304 , a ball screw 305 , a screw nut 3051 , bearing seats 306 and 307 , and a clamping assembly 308 .

[0047] The motor 301 is mounted on the support 101 on the fuselage 1 through the motor mounting plate 302, a synchronous pulley 303 is mounted on the output shaft of the motor 301, the ball screw 305 is rollingly supported by the bearing seats 306 and 307, a synchronous pulley 304 is mounted on its end, and the synchronous pulleys 303 and 304 are connected by a belt. The screw nut 3051 is located between the bearing seats 306 and 307 and is sleeved outside the ball screw 305, and a clamping assembly 308 is mounted on it, and the clamping assembly 308 can clamp or loosen the metal pipe fitting, and the metal pipe fitting passes through the hole 3081 of the clamping assembly.

[0048] The forward and reverse rotation of the motor 301 can drive the belt to move forward and reverse, thereby moving the clamping assembly 38 forward or backward. After the clamping assembly 308 clamps the metal pipe fitting, it moves forward to feed the material, and after the clamping assembly 308 releases the metal pipe fitting, it moves backward to reset.

[0049] In order to make the clamping assembly 308 move more smoothly, a slider guide mechanism 309 is provided between the clamping assembly and the support 101. Figure 1 , Figure 3 .

[0050] like Figure 3 As shown, a material guide tube 312 is also provided on the feeding clamping component 3, and a material guide hole 3121 is provided on the material guide tube 312 for allowing the metal pipe to pass through. The material guide hole 3121 is in the same straight line as the axis of the hole 3081 and the material guide hole 2061. The material guide tube 312 is fixed by the material guide tube fixing frames 310 and 311 installed on the support 101, and the metal pipe is sent forward through the material guide tube, which can better guide the metal pipe.

[0051] If the material guide tube is too long, a tube clamp 313 may be added to better maintain the extension direction of the material guide tube.

[0052] like Figure 4 As shown, the tube cutting component 4 includes a cutter 41, a swing cutting mechanism and an eccentric adjustment mechanism.

[0053] The cutter 41 is installed in the cutter holder 410. The metal pipe passes through the cutter 41. When no cutting action occurs, the cutter is concentric with the cutter and leaves the metal pipe. When cutting, the cutter is not concentric with the metal pipe and cuts into the pipe.

[0054] The swing cutting mechanism includes a motor 401 mounted on a support 101 , a synchronous pulley 402 , and symmetrically arranged synchronous pulleys 403 , a rotating shaft 404 , a bearing seat 405 , a chuck 406 , an eccentric piece 407 , an end cover 408 , a swing shaft 409 and a tool holder 410 .

[0055] The rotating shaft 404 is rollingly supported by a bearing seat 405 installed on the support 101, and a synchronous pulley 403 is installed at one end and a chuck 406 is installed at the other end. The swing shaft 409 is connected to the chuck 406 through an eccentric piece 407 and an end cover 408, and is connected to the tool holder 410 through a rolling element.

[0056] The connection between the rotating shaft 404, the swinging shaft 409, the eccentric member 407, the chuck 406, and the end cover 408 is as follows: Figure 5 , 6 As shown in Figures 7 and 8, the rotating shaft 404, the chuck 406 and the end cover 408 are connected together by screws, and a plurality of axial grooves 4061 are evenly provided at one end of the chuck 406, and protruding portions 4071 and claws 4072 with radial adjustment inclined surfaces 4073 are respectively provided at both ends of the eccentric member 407, and the protruding portions 4071 are evenly inserted into the axial grooves 4061 of the chuck 406, and the claws 4072 pass through the inner hole of the chuck 406 and are inserted into the axial grooves 4081 of the end cover 408. The inner end surface of the swing shaft 409 is axially limited by the chuck 406 to prevent it from moving along the axial direction, and a groove with a radial adjustment inclined surface 4091 is provided thereon, and the inclined surface 4091 is fitted with the inclined surface 4073. When the axial position of the eccentric member changes, the fitting position of the two inclined surfaces changes, forcing the swing shaft 409 to move radially, thereby changing the eccentric distance between the swing shaft 409 and other parts.

[0057] The eccentric adjustment mechanism includes a motor 411 , a gear 412 , a rack 413 , a fixing seat 414 , and a push plate 415 .

[0058] The motor 411 (not shown) is mounted on the support 101, and a gear 412 is mounted on its output shaft. A rack 413 meshing with the gear 412 is mounted on the fixed seat 414, and an eccentric push plate 415 is also mounted. The push plate 415 is slidably supported outside the protruding portion 4071 of the eccentric 407 (such as Figure 6 ), the movement of the push plate can drive the eccentric to move along the axial direction.

[0059] In order to ensure the smooth movement of the eccentric member, a slider rail guide mechanism 416 is provided between the support 101 and the fixed seat 414 .

[0060] In order to make the cutting more secure, a clamping assembly 417 is added. The clamping assembly 417 can clamp or loosen the metal pipe, which passes through the hole 4141 on the fixing seat, the hole of the eccentric push plate 415, the clamping assembly 417, the cutter and the straightening sleeve 418 in sequence.

[0061] When the cutting work starts, the clamping assembly 417 clamps the pipe fitting, the motor 401 starts, and drives the tool holder and the cutter installed therein to swing through the transmission of the synchronous pulleys 402 and 403, the rotating shaft 404, etc., so that the cutter acts on the entire outer circle of the metal pipe fitting at the cutting position; at the same time, the motor 411 starts, and drives the push plate 415 with the eccentric member 407 to move axially through the gear rack, so that the swing shaft moves radially in real time, changing the eccentric distance between the swing shaft 409 and other parts, that is, changing the real-time swing distance of the tool holder, so that the cutting depth of the cutter acting on the metal pipe fitting is different each time, and when the eccentric member is moved to the set position, the cutting action of the metal pipe fitting is completed. When the cutting action is completed, the eccentric member is reset, and the clamping assembly 417 releases the metal pipe fitting.

[0062] In order to allow the cut fixed-length workpiece to be conveniently and quickly sent to the flaring component 5 of the next process, the workpiece is not completely cut off. After the cutting action is completed, the clamping component 417 releases the metal pipe, and the feeding component clamps the metal pipe at the conveying end and continues to feed forward a specific distance, and the pre-cut workpiece is completely sent into the flaring mechanism and clamped. After clamping, the feeding component clamps the metal pipe and retreats a small set distance to break the metal pipe. After retreating a small set distance, it just reaches the next cutting point. After the workpiece is broken, the pipe cutting component clamps the metal pipe again to cut the next workpiece. At the same time, the feeding component releases the metal pipe and resets.

[0063] The flaring member 5 is mounted on the support 101. Fig. 9 and 10 As shown, it includes expansion components 501 and 502 and a clamping component 503.

[0064] The expansion components 501 and 502 are mounted on an expansion bracket 504 .

[0065] The expansion components 501 and 502 generally include an expansion head and an expansion head mover, which enter the pipe through the expansion head to change the diameter and shape of the pipe. Since they are common components, they will not be described in detail here.

[0066] Due to space limitations in this embodiment, the centers of the expanding heads of the expanding assemblies 501 and 502 are not on the same axis as the center of the workpiece clamped by the clamping assembly 503. In order for the expanding heads to accurately enter the pipe fittings to complete the expanding, the expanding heads and the pipes in the clamping assembly must be on the same axis, so the clamping assembly needs to be lifted as a whole.

[0067] The lifting of the clamping assembly 503 is achieved by the extension and retraction of the piston rod of the cylinder 505 installed on the expansion bracket 504, and the piston rod of the cylinder 505 is connected to the clamping assembly.

[0068] In order to ensure smooth lifting and lowering of the clamping assembly 503 , a guide mechanism is added. The upper and lower guide rods 506 of the guide mechanism are slidably connected to the flaring bracket 504 through sliding elements, and the middle part is fixed to the clamping assembly 503 through a nut 507 .

[0069] When the clamping assembly 503 clamps the workpiece and the cylinder 505 moves to lift the workpiece into place, the flaring assemblies 501 and 502 start to work and flare the two ends of the workpiece. After the flaring is completed, the clamping assembly descends and resets, releases the workpiece, and the next workpiece is conveyed. Through the pushing action of the next workpiece, the flared workpiece is pushed out of the clamping assembly into the material channel and falls into the ejector component 6 through the material channel.

[0070] In this embodiment, since there is a large height difference between the expansion part and the lifting part, the material channel adopts a draw-plate structure, which can prevent the workpiece from tilting when falling and ensure that the workpiece falls into the lifting part 6 correctly.

[0071] like Fig.11 , 12 The drawer-type material channel component 13 shown in 13 is installed on the support 101, and includes a hopper 1301, a drawer assembly 1302, a cylinder mounting seat 1303, a cylinder 1304, a linear shaft 1305, and a slide seat 1306.

[0072] like Fig.13 As shown, the hopper 1301 includes a plurality of material channels 13011 (shown by dotted lines) and a plurality of rows of long waist-grooved through holes 13012 .

[0073] like Fig.12 As shown, the above-mentioned draw plate assembly 1302 includes a draw plate 13021 and a plurality of draw pins 13022. The draw plate 13021 and the plurality of rows of draw pins 13022 are fixed together to form a whole. The plurality of rows of draw pins 13022 are respectively inserted into the corresponding long waist groove through holes 13012, as shown in FIG. Fig.13 shown.

[0074] The cylinder 1304 is mounted on the hopper 1301 through the cylinder mounting seat 1303, and its piston rod is connected to the pumping plate 13021. The two ends of the linear shaft 1305 are supported and fixed by the cylinder mounting seat 1303, and a slide seat 1306 is sleeved thereon, and the slide seat 1306 is mounted on the pumping plate 13021.

[0075] The cylinder piston rod is extended and retracted to drive the pull pin 13022 of the pull plate assembly 1302 to move back and forth along the long waist slot through hole 13012, and the pull plate assembly moves smoothly through the linear axis and the slide guide mechanism. After the workpiece enters the material channel, the pull pin 13022 of the first row makes way to allow the workpiece to fall (such as Fig.13As shown), when it falls to the second row of waist holes, the drawer assembly moves to the left under the action of the cylinder to make way for the material channel. When it falls to the third row of waist holes, the drawer assembly moves to the right under the action of the cylinder to make way for the material channel, and so on, until the workpiece falls into the top material component 6.

[0076] like Fig.14 As shown, the ejecting component 6 includes a mounting seat 601, a motor 602, synchronous pulleys 603 and 604, a ball screw 605, a screw nut 606, a guide rod 607, a guide sleeve 608, an ejecting rod mounting seat 609, an ejecting rod 610, a movable frame 611, a guide plate 612, a cylinder 613 and a cylinder support 614.

[0077] The motor 602 is mounted on the moving frame 611, and a synchronous pulley 603 is mounted on the output shaft of the motor 602.

[0078] The two ends of the ball screw 605 are rollingly supported by the mobile frame 611, and one end thereof is installed with a synchronous pulley 604, and the synchronous pulley 604 is connected to the synchronous pulley 603 through a synchronous belt; the screw nut 606 is inserted into the outside of the ball screw 605 and installed on the ejector rod mounting seat 609.

[0079] In order to make the ejector rod move smoothly, a guide rod 607 and a guide sleeve 608 are provided between the ejector rod mounting seat 609 and the moving frame 611 for guidance. The guide rod 607 is supported by the moving frame 611 for rolling, and the guide sleeve 608 is sleeved outside the guide rod 607 and mounted on the ejector rod mounting seat 609.

[0080] The material guide plate 612 is installed on the moving frame 611 , and a workpiece groove 6121 and a material guide hole 6122 are provided on the material guide plate 612 .

[0081] The ejector rod 610 is mounted on the ejector rod mounting seat 609 , and its center is in the same straight line as the center of the workpiece groove and the material guide hole and is directly opposite to the material guide hole 6122 .

[0082] The cylinder 613 is installed on the mounting base 601 through the cylinder support 614, and its piston rod is connected to the moving frame 611. The moving frame 611 and the parts installed thereon are driven to move through the extension and retraction of the cylinder piston rod.

[0083] In order to ensure smooth movement of the moving frame 611 , a slider and seat guide mechanism 615 is provided between the moving frame 611 and the mounting seat 601 .

[0084] When the workpiece falls into the workpiece slot 6121, the cylinder 613 starts working, pushing the movable frame 611 forward, so that the guide plate is pushed to the specified position, and then the motor 602 starts working, and through the transmission of the synchronous pulleys 603 and 604, drives the ball screw 605 to rotate, so that the screw nut 606 drives the ejector rod mounting seat 609 and the ejector rod 610 to move forward, thereby pushing the workpiece through the guide hole 6122 into the bending part 7. After the workpiece is pushed into the bending part, the ejector rod 610 and the movable frame 611 are reset.

[0085] like Fig.15 As shown, Figure 2 As shown, the bending device 7 includes a driving motor 701 , a bending mold assembly 702 , a bending frame 703 , and a supporting seat 704 .

[0086] The driving motor 701 is installed on the bending frame 703, and its output shaft is connected to the bending die assembly 702. Both ends of the bending die assembly 702 are rollingly supported by the bending frame 703, and are provided with slots 7021 for clamping the workpiece and discharge holes 7022, which can clamp or release the workpiece. The bending die assembly 702 is rotated by the drive of the motor 701 so that the workpiece is bent and formed as required.

[0087] The bending frame 703 is laterally mounted on the supporting seat 704 .

[0088] The bending mechanism may also include a bending frame 703 height adjustment mechanism, which includes an equal height block 705 and a slider rail guide mechanism 708. The equal height block 705 is arranged between the top surface of the support seat 704 and the top of the bending frame 703. The equal height block 705 and the bending frame 703 are fixed together with the support seat 704 by screws (not shown in the figure). The slider rail guide mechanism 708 is arranged between the bending frame 703 and the vertical surface of the support seat 704, so that the bending frame 703 can move smoothly up and down relative to the support seat 704.

[0089] In order to facilitate the replacement of the equal height block 705, a bending frame 703 support mechanism is also set up, which includes a tightening screw 706 and a tightening screw seat 707. The tightening screw seat 707 is fixed on the top surface of the support seat 704, and a tightening nut 709 is set on the tightening screw seat 707. The tightening screw 706 is threadedly connected to the tightening nut 709 and passes through the tightening screw seat 707 to be connected to the bending frame 703.

[0090] When replacing the mold, due to the change in the center distance of the workpiece, the upper and lower positions of the bending frame need to be adjusted. Just loosen the screws and replace the equal height blocks 705 of different heights. At this time, the bending frame 703 can be supported by adjusting the height of the tightening screw 706 to prevent the bending frame 703 from being too heavy to be supported manually.

[0091] like Figure 3As shown, the spindle in-and-out component 8 includes a base frame 801 , a cylinder 802 , a moving frame 803 , and a spindle 804 .

[0092] The oil cylinder 802 is installed on the base frame 801, and its piston rod is connected to the movable frame 803. The movable frame 803 has a fixed core shaft 804 on the top and a fixed slide 805 on the bottom. The base frame 801 has a corresponding slide rail 806. The extension and retraction of the piston rod drives the movable frame 803 and the core shaft 804 fixed thereon to move smoothly back and forth through the slide rail and slide guide mechanism.

[0093] like Fig.16 and 17 As shown, the above-mentioned follower component 9 includes a mold ejector 901, a mold ejector cylinder 902, a motor 903, synchronous pulleys 904 and 905, a vertical plate 906, a ball screw 907, a screw nut 908, a follower plate 909, a material guide tube 910 and a material guide tube mounting bracket 911.

[0094] The ejector oil cylinder 902 is installed on the follower plate 909, and its piston rod is connected to the ejector 901. A groove 9011 is set on the ejector 901. The extension and retraction of the piston rod can drive the ejector to move up and down to adapt to the bending die clamping or loosening the workpiece. The center of the groove 9011 is consistent with the center of the slot 7021.

[0095] The motor 903 is mounted on the bottom frame 801 through the vertical plate 906 (see Fig.16 ), a synchronous pulley 904 is installed on its output shaft.

[0096] The ball screw 907 is rollingly supported by the vertical plate 906, and a synchronous pulley 905 is installed at one end. The synchronous pulley 904 and the synchronous pulley 905 are connected by a synchronous belt. A screw nut 908 is sleeved on the ball screw 907, and the screw nut 908 is connected to the follower plate 909.

[0097] The material guide tube 910 is installed on the follower plate 909 via a mounting bracket 911 , and each installation position of the material guide tube 910 corresponds to a groove 9011 .

[0098] A slide seat 912 is installed below the follower plate, corresponding to the slide rail 806 of the bottom plate frame 801, and the slide seat 912 and the slide rail 806 form a guiding mechanism.

[0099] The ball screw 907 is driven by the motor 903 and the synchronous pulleys 904 and 905 to rotate, and then the screw nut 908 drives the follower plate and the support mold 901 and the guide tube 910 thereon to move smoothly through the slide rail and slide seat guide mechanism.

[0100] When bending a workpiece, the mandrel 804 passes through the guide tube 910 and extends into the designated position of the workpiece to play a supporting role. At this time, one end of the workpiece is clamped by the bending die, and the other end is located in the groove 9011 of the support die 901. As the bending die rotates to bend the workpiece, the support die 901 also moves forward with the guide tube 910, so that the friction resistance during the bending process can be reduced, and the thinning of the outer wall of the pipe can be effectively prevented.

[0101] like Fig.16 As shown, a discharge component 10 is also provided, which includes a discharge needle 1001, a discharge needle mounting plate 1002, a cylinder 1003, a guide rod 1004, and a guide rod straightening plate 1005.

[0102] The cylinder 1003 is installed on the vertical plate 906, and its piston rod is connected to the unloading needle mounting plate 1002. One end of the unloading needle is installed on the unloading needle mounting plate 1002. One end of the guide rod 1004 is installed on the vertical plate 906 and passes through the unloading needle mounting plate 1002, and the other end passes through the straightening plate 1005, which serves as a straightening guide rod.

[0103] After the workpiece is bent, the cylinder 1003 piston rod is extended and retracted to drive the discharge needle mounting plate 1002 and the discharge needle 1001 mounted thereon to move smoothly through the guide rod, and the discharge needle 1001 extends into the hole 7022 of the bending die to push out the bent pipe and remove it. After the workpiece is removed, the cylinder 1003 retracts the discharge needle 1001 to reset, the mandrel 804 is reset, the ejector 901 is reset, and the bending die assembly 702 is reset.

[0104] In this embodiment, a maximum of eight pipes are bent simultaneously, which greatly improves the pipe bending speed.

[0105] The degreasing mechanism 11 includes a blower 1101 , a degreasing and drying transfer box 1102 , a drain pipe 1103 and an oil mist filter 1104 .

[0106] The blower 1101 is connected to the degreasing and drying transfer box 1102 and is respectively installed on the fuselage 1; one end of the drain pipe 1103 is connected to the degreasing and drying transfer box 1102 and the other end is connected to the oil mist filter 1104 .

[0107] After the U-shaped bend pipe is pushed out by the unloading needle 1001, it falls into the hopper 14 and enters the degreasing and drying transfer box 1102 for degreasing and drying process. The grease on the surface of the U-shaped bend pipe is removed and dried by the blower 1101, and the oil mist generated in the degreasing and drying transfer box 1102 is discharged through the drain pipe 1103 and the oil mist filter 1104.

[0108] The degreased U-shaped bent pipe enters the conveying channel 16 through the hopper 15, and is transported to the hopper 17 at the upper end by the conveying channel 16, and then falls into the bent pipe vibration plate 18. The welding ring is placed in the welding ring vibration plate 19 by manual or automated equipment, and then the bent pipe and the welding ring enter the ring mechanism 12 through the slideways 20 and 21 respectively, and the welding ring is put on the bent pipe through the ring mechanism 12 installed on the fuselage 1, so that the bent pipes with welding rings are processed one by one and are output through the discharge outlet 22.

Claims

1. A pipe bending and collaring integrated machine for pipe fittings, characterized in that: The invention comprises a pipe cutting component, a pipe bending component, a discharging component and a collar mechanism which are arranged in sequence. The pipe cutting component cuts the pipe into pipes of specified lengths. The cut pipes enter the bending component for bending. After the pipes are bent into a U shape, they are unloaded by the discharging component to the collar mechanism for collaring. The pipe cutting component comprises a swing cutting mechanism and a cutter. The swing cutting mechanism comprises a driver, a synchronous transmission mechanism, a rotating shaft, an eccentric piece, a chuck, an end cover, a swing shaft and a tool holder. The rotating shaft, the eccentric piece, the chuck, the end cover and the swing shaft are in two groups. Each group is arranged symmetrically with respect to the position where the pipe enters. The chuck is fixed at one end of each rotating shaft, the end cover is fixed at the outside of the chuck, and one side of the eccentric piece is axially movably connected to the chuck. The swing shaft is supported by the end cover, and the swing shaft is connected to the other side of the eccentric piece through a radial sliding mechanism. The inner end of the swing shaft is axially limited by the chuck, and the outer ends of the two swing shafts roll to support the tool holder. The other ends of the two rotating shafts are connected by the same The step transmission mechanism is connected to the driver; the pipe cutting component is also provided with an eccentric adjustment mechanism, which includes an eccentric driver, an axial movement mechanism, and a push plate. The push plate is fixed to the above-mentioned eccentric member. The eccentric driver axially moves the push plate through the axial movement mechanism, and the push plate drives the above-mentioned eccentric member to move, thereby driving the swing shaft connected thereto to move radially, thereby changing the radial position of the tool holder; the cutter is arranged at the pipe inlet of the tool holder. When not cutting, the cutter is separated from the pipe. When cutting, the cutter cuts into the pipe as the tool holder swings; the axial movement mechanism is a gear and rack mechanism, the rack is fixed on the push plate, the gear is fixed on the motor shaft, the gear drives the rack to move and drives the push plate to move axially; the radial sliding mechanism of the swing shaft and the other side of the eccentric member is: a groove oblique to the shaft is arranged on the end of the swing shaft, an oblique groove matching the groove at the end of the swing shaft is arranged on the other side of the eccentric member, and the oblique groove of the eccentric member is slidably inserted into the groove of the swing shaft.

2. The pipe bending and collaring integrated machine for pipe fittings according to claim 1, characterized in that: A bent pipe degreasing mechanism is also arranged before the unloading component to clean and degrease the bent pipe of the unloading component, and then the cleaned bent pipe is sent to the collaring mechanism for collaring.

3. The pipe bending and collaring integrated machine for pipe fittings according to claim 1, characterized in that: The pipe bending component includes a driver, a bending die assembly, a bending frame, and a support seat. The bending die assembly is rollingly connected to the bending frame. The bending die assembly is provided with slots and discharge holes for clamping the workpiece. The driver is installed on the bending frame. The driver rotates the bending die assembly to bend the workpiece into shape. The side of the bending frame is installed on the support seat. It also includes a follower component, which includes a support die, a follower plate driver, and a follower plate. The support die is provided with a groove for supporting the pipe fitting. The follower plate driver connects and moves the follower plate, and the follower plate is connected to the fuselage through a guide mechanism.

4. The pipe bending and collaring integrated machine for pipe fittings according to claim 3, characterized in that: A lifter is also provided, which is mounted on the follower plate and connects and lifts the supporting mold.

5. The pipe bending and collaring integrated machine for pipe fittings according to claim 1, characterized in that: A flaring component is also provided before the ejection component to flare the cut pipe fitting.

6. The pipe bending and collaring integrated machine for pipe fittings according to claim 1, characterized in that: A material channel component is arranged behind the expanding component, and the expanded pipe fitting is moved to the same height as the ejecting rod of the ejecting component through the material channel component.

7. The pipe bending and collaring integrated machine for pipe fittings according to claim 1, characterized in that: A full-circle component and a feeding component are also arranged in front of the pipe cutting component. The full-circle component includes a full-circle wheel bracket, an upper full-circle wheel and a lower full-circle wheel. The upper full-circle wheel and the lower full-circle wheel are respectively rotatably fixed on the full-circle wheel bracket. Grooves are respectively arranged on the upper and lower full-circle wheels. The cross-section of the two grooves at opposite positions is a circle consistent with the diameter of the pipe to be bent. The feeding component includes a clamping component and a driving component for driving the clamping component. The clamping component clamps and releases the pipe. After the clamping component clamps the pipe, it is moved by the driving component to move the pipe into the pipe cutting component.

Images