Four-way valve pipe flanging machine and flanging processing technology thereof

Abstract

The invention belongs to the technical field of four-way valve pipe machining, particularly relates to a four-way valve pipe flanging machine and a flanging machining process thereof, and solves the problems of low mechanization degree and low machining efficiency. The four-way valve pipe flanging machine comprises a rack, and a feeding mechanism, a pre-checking adjusting mechanism and a positioning flanging mechanism are arranged on the rack. The feeding mechanism is used for pushing the four-way valve pipe to the pre-checking and adjusting machine; the pre-detection adjusting mechanism comprises a rotary abutting structure and a steering adjusting structure, the rotary abutting structure is used for rotating the four-way valve pipe, a penetrating detection assembly is arranged on the side of the four-way valve pipe, and the steering adjusting structure is used for removing NG materials or adjusting the orientation of qualified materials; the positioning and flanging mechanism is used for conducting rotary positioning, short pore flanging, D hole flanging machining and finished product discharging on the four-way valve pipe. The positioning and flanging mechanism comprises a transferring structure. A series of assembly line type treatment including feeding, pre-detection, steering adjustment, NG material removal, rotary positioning, short pore flanging and D hole flanging is achieved, the automation degree is high, and the machining efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of four-way valve tube processing, and in particular relates to a four-way valve tube flanging machine and a flanging processing technology thereof. Background Art

[0002] The four-way valve is a control valve with four oil ports, which is widely used in refrigeration equipment. Its main body is generally a cylindrical four-way valve tube. There are three holes E, S, and C on one side of the four-way valve tube, and a D hole on the other side. There are also short holes on the outside of the three holes. In order to meet the corresponding docking requirements, the D hole and the short hole need to be flanging outwards.

[0003] However, in the current existing technology, most four-way valve tube flanging machines are unable to complete a series of processing operations including loading, pre-inspection, steering adjustment, NG material removal, rotation positioning, short pore flanging, D-hole flanging and finished product discharge, and still require a large amount of manual participation, with a low degree of automation and mechanization, and low processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems in the prior art and to provide a four-way valve tube flanging machine and a flanging processing technology thereof.

[0005] In order to achieve the purpose of the invention, the following technical solutions can be used:

[0006] A four-way valve tube flanging machine comprises a frame, on which a feeding mechanism, a pre-inspection adjustment mechanism and a positioning flanging mechanism are provided; the feeding mechanism is used to push the four-way valve tube to be processed toward the pre-inspection adjustment mechanism and abut against it; the pre-inspection adjustment mechanism comprises a rotating abutment structure and a steering adjustment structure, the rotating abutment structure is used to rotate the four-way valve tube in a circumferential direction, a penetration detection component is provided on the side of the four-way valve tube, and the steering adjustment structure is used to reject NG materials or adjust the direction of qualified materials according to the detection result; the positioning flanging mechanism is used to perform rotation positioning, short pore flanging and D-hole flanging processing on the four-way valve tube that has passed the pre-inspection and has completed the direction adjustment, and discharge the material after the processing is completed, and the positioning flanging mechanism comprises a transfer structure, which is used to transfer the four-way valve tube between each processing station in turn.

[0007] The four-way valve tube flanging machine of the present invention is used for performing pre-inspection, steering adjustment, NG material rejection, rotation positioning, short pore flanging and D-hole flanging processing on the four-way valve tube, wherein the feeding mechanism is used for loading the four-way valve tube from the corresponding material storage box to the pre-inspection adjustment mechanism, the pre-inspection adjustment mechanism rotates the four-way valve tube, and performs penetration detection through the penetration detection component during the rotation process, which is used to detect the penetration qualification of the three holes and the position of the D hole, and the D hole position is divided into a center setting and an offset setting. Since the offset position is not certain, it may be located on the front side or the rear side, the steering adjustment structure is used to rotate the four-way valve tube so that the D hole is located on the same front side or rear side, which is convenient for the subsequent positioning flanging mechanism processing. After the positioning flanging mechanism adjusts the four-way valve tube to have three holes facing upwards, the short pores and D holes are specifically flanging processed. The four-way valve tube is transferred between the processing stations through the transfer structure, and the mechanization and automation levels are high, and the detection and flanging processing of the four-way valve tube can be completed efficiently.

[0008] In the above-mentioned pre-inspection adjustment mechanism, the pre-inspection adjustment mechanism includes a pre-inspection loading platform arranged on the frame, and the pre-inspection loading platform is provided with a loading groove adapted to the outer diameter of the four-way valve tube, and the downstream side of the pre-inspection loading platform is provided with a rotating abutment structure, and the upstream side is provided with a pushing feeding structure, which is used to send the four-way valve tube onto the pre-inspection loading platform and make the front end frictionally connected with the rotating surface of the rotating abutment structure, and the side of the four-way valve tube is provided with at least three groups of penetration detection components radially opposite to its E, S, and C holes respectively, and the frame is also provided with a steering adjustment mechanism, which is used to adjust the direction of the four-way valve tube according to the detection result of the penetration detection component for the D hole position.

[0009] The pre-check adjustment mechanism is used to perform corresponding inspection and adjustment on the four-way valve tube. The four-way valve tube is provided with four holes, E, S, C, and D, wherein the E, S, and C holes are evenly arranged axially on one side of the tube body, and the D hole is arranged on the opposite side, wherein the S hole is in the middle, and the E and C holes are arranged at both ends. Different styles of four-way valve tubes have different positions of D holes, which may be set in the middle, directly opposite to the S hole, or may be offset, opposite to the E and C holes. The pre-check adjustment mechanism first detects the positions and penetration conditions of the four holes, and adjusts the four-way valve tube according to the detected positions of the D holes. It is particularly used to rotate and adjust the four-way valve tube with the D hole offset so that the D hole is located at a unified front side or rear side, to ensure smooth cooperation with the subsequent D hole flanging structure. Among them, the pre-inspection loading platform is used to carry the four-way valve tube to be processed, the loading groove can achieve a good positioning effect, the pushing feeding structure is used to push the four-way valve tube onto the pre-inspection loading platform, and has a loading function. At the same time, the end of the four-way valve tube can be pushed on the rotating surface, and the rotating surface and the end of the four-way valve tube are frictionally connected. The rotating abutment structure is used to drive the four-way valve tube to rotate circumferentially to ensure that the penetration detection component completes at least 360 degrees of circumferential detection of the four-way valve tube. The penetration detection component is used to realize specific detection functions, and the steering adjustment mechanism is used to grab the four-way valve tube and perform corresponding 180-degree steering adjustment when necessary.

[0010] In the above-mentioned pre-inspection adjustment mechanism, the rotating abutment structure includes an abutment platform, and the abutment platform is rotatably connected to a rotating disk near the pre-inspection loading platform. The rotating disk is driven to rotate by a rotating drive component, and the rotating surface is formed on the rotating disk.

[0011] The rotating disk is rotatably connected to the inner side of the pre-inspection loading platform, and the rotating drive assembly includes a first motor arranged on the frame. The output end of the first motor is transmission-connected to the rotating disk to drive the rotation of the rotating disk, thereby driving the rotation of the four-way valve tube frictionally driven therewith.

[0012] In the above-mentioned pre-inspection adjustment mechanism, the rotating surface is provided with a docking groove or a docking boss adapted to the caliber of the four-way valve tube, and an easy-entry guide angle is provided on the outer edge of the docking groove and the outer periphery of the docking boss.

[0013] The docking groove and the docking boss on the rotating surface can be docked with the four-way valve pipe, and the easy-entry guide angle is used for guidance. After the docking is completed, the rotating surface and the axis of the four-way valve pipe coincide with each other, ensuring the stable rotation of the four-way valve pipe.

[0014] In the above-mentioned pre-inspection adjustment mechanism, the penetration detection component includes a laser detector, which is fixed on the frame and radially faces the four-way valve tube in a one-to-one correspondence with the E, S, and C holes, and is used to detect the qualified status of the E, S, C, and D holes and the position of the D hole.

[0015] The penetration detection component is specifically implemented by a laser detector, which can emit radial lasers to the four-way valve tube, and its receiver receives the reflected light, and judges the situation of each hole according to the reflection situation. For example, when the laser is irradiated to the E, S, and C hole positions, the laser is reflected by the inner wall of the four-way valve tube, the reflection distance increases, and the received reflection intensity decreases accordingly, which can be used to detect the positions of the three holes. When the D hole is opposite to the middle S hole, the laser emitted by the laser detector in the middle group completely penetrates the four-way valve tube, and the reflection distance is further increased. At this time, the position of the D hole can be determined. The structure and principle of the laser detector for emitting lasers and receiving reflections are common knowledge and will not be elaborated in detail.

[0016] In the above-mentioned pre-inspection adjustment mechanism, the steering adjustment mechanism includes a clamping jaw assembly and a clamping jaw lifting structure arranged between the clamping jaw assembly and the frame, and a rotating structure is arranged between the clamping jaw assembly and the clamping jaw lifting structure.

[0017] The clamp assembly is used to grab the four-way valve tube, and the clamp lifting structure is used to drive the lifting action of the clamp assembly. When descending, the four-way valve tube is grabbed or placed, and when ascending, the four-way valve tube is raised to a suitable position to ensure the smooth rotation of the four-way valve tube. The rotation structure is used to specifically rotate the clamp assembly, thereby achieving the purpose of rotating the four-way valve tube, and its rotation angle is 180 degrees as a unit. Specifically, the clamp assembly includes a clamp cylinder, and the output end of the clamp cylinder is provided with a group of arc-shaped claw bodies that can be relatively closed or separated, and the inner arc opening of the arc-shaped claw body is adapted to the outer diameter of the four-way valve tube. The clamp cylinder is common knowledge and will not be specifically expanded.

[0018] In the above-mentioned pre-check adjustment mechanism, the clamp lifting structure includes a lifting slide arranged on a frame, a first linear drive is vertically arranged on the frame, and an output end of the first linear drive is connected to the lifting slide;

[0019] The rotating structure includes a driving rack inserted through the lifting slide, the driving rack is driven by the second linear drive to axially telescopically move, the lifting slide is vertically rotatably connected with a rotating mounting shaft, the rotating mounting shaft is sleeved with a driving gear meshing with the driving rack, and the rotating mounting shaft is provided with the clamping jaw assembly.

[0020] The lifting slide can be vertically lifted and lowered on the frame. The first linear drive is used to drive the lifting and lowering action of the lifting slide. A rotating mounting shaft is provided on the lifting slide. The second linear drive is used to pull the axial movement of the driving rack, thereby realizing the rotation of the driving gear meshing with it. The driving gear drives the rotating mounting shaft to rotate, thereby realizing the effect of rotating the four-way valve tube.

[0021] In the above-mentioned pre-inspection adjustment mechanism, the clamping claw lifting structure is arranged on a translation slide, and the translation slide is slidably connected to the frame and is driven by the translation driving structure to move translationally, and is used to transfer the four-way valve tube to the material loading platform after the clamping claw assembly grabs the four-way valve tube.

[0022] The gripper lifting structure is also arranged on the translation slide, and the translation drive structure drives the translation slide to translate, so that the four-way valve tube can be grabbed from the pre-inspection loading platform and moved to the material-waiting loading platform. The rotation of the four-way valve tube can be performed on the material-waiting loading platform to avoid interference with the relevant structures of the pre-inspection, and it is also beneficial to perform the pre-inspection and steering adjustment operations of the two four-way valve tubes at the same time, thereby improving the processing efficiency. The translation drive structure includes a fourth linear drive arranged on the frame, and the output end of the fourth linear drive is connected to the translation slide.

[0023] In the above-mentioned pre-inspection adjustment mechanism, the material carrier can be hinged on the frame in a vertically flippable manner, and the frame is provided with a third linear driver, the output end of which is connected to the rotating end of the material carrier, and is used to push the rotating end to tilt the material carrier to remove the material. Alternatively, the frame is provided with a circumferential driver, which is connected to the hinge shaft of the material carrier to rotate the material carrier to tilt to remove the material.

[0024] The material waiting platform also has a material picking function. One end of the platform is hinged on the frame, and the other end can be lifted vertically to a tilted state. The tilted material picking side is connected to an NG material basket. The four-way valve tube can slide into the NG material basket due to the height difference, thereby collecting NG materials. The rotation of the platform can be achieved by a third linear drive. The output end of the third linear drive lifts the rotating end of the platform to achieve rotation control. It can also be achieved by a circumferential drive. The circumferential drive drives the rotation of the articulated shaft to directly achieve rotation control of the platform.

[0025] In the above-mentioned pre-inspection adjustment mechanism, the frame is provided with a feed slideway docking with the pre-inspection loading platform, the pushing feeding structure includes a pushing rod axially moving in the feed slideway, the pushing rod is arranged on a translation slide, the translation slide is slidably connected to the frame, and is driven by the translation drive structure to move translationally.

[0026] A feed slide is provided on the upstream side of the pre-inspection loading platform, and the slide is located in the same straight line as the loading groove. The ejector rod is driven by the translation drive structure to move axially in the feed slide, and is used to push the upstream four-way valve tube to the pre-inspection loading platform to realize automatic loading.

[0027] In the above-mentioned pre-inspection adjustment mechanism, a ejector head is provided at one end of the ejector rod near the pre-inspection loading platform, and a positioning cone surface or a guide groove adapted to the caliber of the four-way valve pipe is provided on the ejector head; the ejector head is rotatably connected to the mounting column at the end of the ejector rod, and a bearing assembly is provided between the ejector head and the ejector rod.

[0028] A ejection head is provided at the end of the ejection rod, which is specifically abutted against the rear end of the four-way valve tube. The bearing assembly allows the ejection head to rotate freely relative to the ejection rod, ensuring that the rotating abutment structure drives the four-way valve tube to rotate smoothly. The positioning cone surface or guide groove on the ejection head is used to dock with the end of the four-way valve tube to ensure stable ejection.

[0029] As an optimization, a buffer elastic member is provided between the ejection head and the ejection rod, and the two ends of the buffer elastic member are respectively against the inner end surface of the ejection head and the limiting step on the inner side of the mounting column; the bearing assembly includes a plane bearing, and the buffer elastic member is sleeved on the mounting column, and the two ends are respectively against the inner end surface of the ejection head and the inner ring of the plane bearing.

[0030] The elastic buffer allows the ejector head to have a certain axial elastic expansion and contraction space, reduces the requirements for the movement accuracy of the ejector rod, and avoids damage to related components caused by the ejector rod being directly stopped and the rotating abutment structure being hit.

[0031] Of course, the pre-inspection adjustment mechanism is also connected to the control terminal, which can determine the D hole position and the corresponding qualified status according to the corresponding detection signal, and control the corresponding rotation adjustment or tilting material picking action. The control terminal is common knowledge and will not be further expanded.

[0032] In the above-mentioned feeding mechanism, a rectangular storage box is obliquely arranged on the side of the feeding slide, and a feeding top block is provided between the bottom and the side of the storage box. The feeding top block is driven to lift and lower by the top block lifting assembly, and is used to push the low-positioned four-way valve tube along the side wall to the upper edge. The upper edge is connected to a docking channel for the four-way valve tube to roll toward the upstream of the feeding slide.

[0033] The four-way valve tubes to be processed are stacked parallel to each other in a storage box. The storage box is tilted, and its lower side is the side close to the feed slide, so that the four-way valve tube has a tendency to roll toward this side. The loading top block is lifted and lowered along the side wall of this side to push the four-way valve tube upward. After the tube body is pushed out of the upper edge, it rolls into the feed slide through the docking channel to achieve the effect of automatic loading.

[0034] Specifically, the top block lifting assembly includes a top block lifting cylinder, a strip through hole is provided on the side wall of the storage box near the feed slide, the output end of the top block lifting cylinder is fixedly connected to the loading top block through the strip through hole, and a top block guide hole is provided on the bottom of the storage box near the strip through hole, and the loading top block slides in the strip through hole.

[0035] In the above-mentioned positioning and flanging mechanism, the positioning and flanging mechanism includes a positioning loading platform, a short-hole flanging platform and a D-hole flanging platform arranged on the frame; a rotating positioning structure is provided between the positioning loading platform and the frame, which is used to rotate the four-way valve tube circumferentially to adjust the three holes E, S and C to face upward; a short-hole flanging structure is provided between the short-hole flanging platform and the frame, which is used to flanging the short holes at both ends of the four-way valve tube outward; a D-hole flanging structure is provided between the D-hole flanging platform and the frame; a transfer structure is also provided on the frame, which is used to transfer the four-way valve tube to the positioning loading platform, the short-hole flanging platform and the D-hole flanging platform in sequence.

[0036] This positioning flanging mechanism is mainly used for adjusting the circumferential angle of the four-way valve tube to a state where three holes face upwards, and for flanging the short holes and D holes of the four-way valve tube outwards, wherein the rotation positioning is performed on the positioning loading platform, and the four-way valve tube is rotated to a preset angle by the rotation positioning structure to ensure smooth docking and cooperation with the subsequent processing structure, the short hole flanging processing is performed on the short hole flanging platform, and the short hole flanging structure specifically implements the flanging processing from the inside to the outside, the D hole flanging is performed on the D hole flanging platform, and the D hole flanging structure performs flanging processing on the D hole of the four-way valve tube from the inside to the outside, and the transfer structure is used to realize the sequential displacement of the four-way valve tube at each processing station, of course, the front and rear positions of the short hole flanging platform and the D hole flanging platform can be interchanged, and in order to ensure stable load-bearing, corresponding grooves are provided on the positioning loading platform, the short hole flanging platform and the D hole flanging platform.

[0037] In the above-mentioned positioning flanging mechanism, the rotation positioning structure includes a tube body rotation assembly and a limit rod located above the positioning loading platform, a limit rod lifting assembly is provided between the limit rod and the frame, and the positioning head at the lower end of the limit rod slides or rolls on the outer wall of the four-way valve tube, the position of the positioning head corresponds to at least one of the three holes, and the outer diameter is between the aperture of the D hole and the aperture of the three holes, and can be inserted into the hole to prevent rotation.

[0038] The limit rod is vertically liftable and arranged above the positioning loading platform. The limit rod lifting assembly is used to specifically drive the lifting action of the limit rod. The positioning head at the lower end of the limit rod is in contact with the outer wall of the four-way valve tube and has a tendency to move downward. The tube body rotation assembly is used to drive the circumferential rotation of the four-way valve tube. As the tube body rotates, the lower end of the limit rod rolls or slides on the tube wall. When the limit rod is opposite to one of the three holes, it is inserted into the hole, thereby limiting the continued rotation of the four-way valve tube, thereby achieving the effect of adjusting the four-way valve tube to three holes facing upward. The size of the positioning head is between the D hole and the three holes, that is, it will not be inserted into the D hole.

[0039] In the above-mentioned positioning flanging mechanism, the limit rod lifting assembly includes a lifting cylinder whose cylinder body is fixed on the frame, the output end of the lifting cylinder is fixedly connected to the limit rod, and the positioning head includes a roller or a soft wear-resistant head; the tube body rotating assembly includes a rotating disk respectively located on the two axial sides of the positioning loading platform, the rotating disk is rotatably connected to the inner side of the first clutch slide, and the first clutch slide is driven by the first clutch drive assembly to move close to or away from the four-way valve tube, which is used to make the rotating disk close to the end of the four-way valve tube for friction transmission, and the rotating disk is transmission-connected to the output end of the first motor.

[0040] The limit rod is connected to the output end of the lifting cylinder, and the extension and retraction of the limit rod is realized by the extension and retraction of the output end of the lifting cylinder. A roller or a wear-resistant head is provided on the positioning head, and the roller can roll in contact with the outer wall of the four-way valve tube, and the wear-resistant head can frictionally contact with the outer wall of the four-way valve tube, so as to ensure smooth relative rotation without scratching the tube wall. The tube body rotating assembly drives the four-way valve tube to rotate through a rotating disk, and the rotating disk is arranged on the first clutch slide, and can be driven by the first clutch drive assembly to move close to or away from the four-way valve tube. A docking groove or docking protrusion adapted to the diameter of the four-way valve tube can also be arranged on the rotating disk to ensure the stability of the docking. As the first clutch slide moves close to the positioning loading platform, the rotating disk is close to the end of the four-way valve tube to realize friction transmission, and the contact is released when it is far away, so as to ensure that the four-way valve tube can smoothly enter and exit the positioning loading platform. The first motor specifically drives the rotation of the rotating disk to achieve the effect of rotating the four-way valve tube.

[0041] As an optimization, an elastic insertion component is provided between the positioning head and the limiting rod, and / or between the limiting rod and the output end of the lifting cylinder, so that the positioning head maintains a downward elastic tendency after contacting the outer wall of the four-way valve tube so as to be inserted when encountering three holes.

[0042] Specifically, the first clutch slide is slidably connected to the frame, the first clutch drive assembly includes a first clutch cylinder whose cylinder body is fixed to the frame or the first clutch slide, and the output end of the first clutch cylinder is connected to the first clutch slide or the frame.

[0043] In the above-mentioned positioning flanging mechanism, the short-hole flanging structure includes flanging columns located in the two axial directions of the four-way valve tube, and a small-hole flanging punch is vertically arranged on the upper side of the flanging column. The flanging column is arranged on the inner side of the second clutch slide, and the second clutch slide is slidably connected to the frame and driven by the second clutch drive assembly to move closer to or away from the four-way valve tube. A downward pressure assembly is arranged above the short-hole flanging table, and the short-hole flanging table is connected to the frame through an elastic telescopic assembly.

[0044] A small hole flanging punch needle is provided on the flanging column and faces upward. The flanging column is arranged on the second clutch slide and can be extended to insert into or move out of the four-way valve tube under the drive of the second clutch drive component. After the flanging column is extended and inserted into place, the small hole flanging punch needle is just located directly below the short hole. The pressing component is used to press the four-way valve tube downward. As the four-way valve tube continues to descend and translate, the small hole flanging punch needle penetrates upward into the short hole to achieve the effect of flanging the short hole outward. The elastic telescopic component is used to ensure that the short hole flanging platform has a certain downward elastic retraction ability to ensure the pressing operation of the pressing component on the four-way valve tube.

[0045] Specifically, the second clutch slide is slidably connected to the frame, the second clutch drive assembly includes a second clutch cylinder whose cylinder body is fixed to the frame or the second clutch slide, and the output end of the second clutch cylinder is connected to the second clutch slide or the frame.

[0046] As an optimization, one or more punch needle mounting holes are provided on the upper side of the flanging column, and the small hole flanging punch needle can be removably fixed in the punch needle mounting hole. The outer diameter of the flanging column is smaller than the inner diameter of the four-way valve tube, and can be inserted into the four-way valve tube and make the small hole flanging punch needle located below the flanging hole.

[0047] There are multiple punch needle mounting holes, and a suitable mounting position can be selected according to the specific distance between the short hole and the end of the four-way valve tube. The small hole flanging punch needle and the punch needle mounting hole can be removably fixed, which is convenient for disassembly, assembly and adjustment.

[0048] In the above-mentioned positioning flanging mechanism, the pressing assembly includes a pressing block slidably connected to the frame, the pressing block is connected to the output end of the pressing electric cylinder, and the bottom surface of the pressing block is provided with a docking groove adapted to the outer diameter of the four-way valve tube; a positioning column is vertically arranged on the pressing block, the positioning column is vertically opposite to at least one of the three holes, and a guide cone surface is provided at the lower end, and the guide cone surface is lower than the bottom of the docking groove.

[0049] The lower pressure block moves up and down under the drive of the lower pressure electric cylinder, and the docking groove at the bottom of the lowering block docks with the four-way valve tube to ensure stable downward pressure. The positioning column on the lower pressure block is used to make a certain circumferential angle adjustment in the process of the lower pressure block approaching the four-way valve tube to ensure that the small hole flanging punch needle and the short pore are accurately docked. The guiding cone surface at the lower end of the positioning column is used to contact the periphery of the three holes to move the four-way valve tube to the three holes facing upward.

[0050] As an optimization, at least one positioning column mounting groove is provided at the bottom of the lower pressure block, the positioning column is fixed in the positioning column mounting groove, the maximum outer diameter of the guide cone surface is adapted to the three-hole inner diameter of the four-way valve tube, and the distance between the lower end and the bottom of the docking groove is smaller than the diameter of the four-way valve tube.

[0051] Multiple positioning column mounting grooves can be set, but all correspond to at least one of the three holes. The positioning column can be removably fixed in the positioning column mounting groove, and the disassembly and assembly are flexible. The lowest position of the guide cone surface does not exceed the lower inner wall of the four-way valve tube, which avoids the positioning column hitting the inner wall of the four-way valve tube and avoids unnecessary impact on the D hole.

[0052] In the above-mentioned positioning and flanging mechanism, the D-hole flanging structure includes a flanging punch arranged above the D-hole flanging table, and the flanging punch is arranged on the frame through a punch lifting assembly. The maximum outer diameter of the flanging punch is smaller than the inner diameter of the three holes, and the position corresponds vertically to the D hole, and can pass through the three holes to flanging the D hole. The frame is also provided with a demolding blocking assembly for vertically limiting the four-way valve tube, and the D-hole flanging table is provided with a clearance gap corresponding to the position of the flanging punch.

[0053] The flanging punch is driven by the punch lifting assembly to lift and lower. The flanging punch is used to be inserted into the D hole to realize outward flanging. Its outer diameter is smaller than the inner diameter of the three holes to ensure smooth cooperation between the three holes and the D hole. The demoulding blocking assembly is used to prevent the four-way valve tube from being driven upward by the flanging punch when the flanging punch is completed and withdrawn, ensuring that the flanging punch is withdrawn from the D hole. The making way notch is used to make way for the downward flanging of the D hole.

[0054] In the above-mentioned positioning and flanging mechanism, the punch lifting assembly includes a lifting seat slidably connected to the frame, at least two punch mounting holes are provided at the bottom of the lifting seat, the punch mounting holes are respectively opposite to the S hole and the E or C hole, the flanging punch is detachably fixed in the punch mounting hole, the lifting seat is connected to the punch lifting cylinder, and the demolding blocking assembly includes an L-shaped demolding block fixed to the frame, and the lateral material blocking portion of the demolding block is located directly above the end of the four-way valve tube.

[0055] The lifting seat can slide vertically, and the output end of the punch lifting cylinder is connected to the lifting seat to drive the lifting action of the lifting seat. There are multiple punch mounting holes at the bottom of the lifting seat, one of which is opposite to the S hole and is set in the center, and the other is opposite to the E or C hole and is set offset. It can be used to process the four-way valve tube with the D hole centered or offset. The flanging punch and the punch mounting hole can be detachably fixed and have flexible detachability. The demoulding block is in an inverted L shape, and its horizontal stopper is located above the end of the four-way valve tube, which is used to prevent the four-way valve tube from rising and moving synchronously with the rise of the flanging punch, ensuring the smooth exit of the flanging punch. Of course, a certain gap is set between the horizontal stopper and the four-way valve tube to ensure that the transfer structure can carry the four-way valve tube to the D hole flanging table.

[0056] As an optimization, the bottom of the transverse material stopper is provided with a flanged short pore giving way groove, the width and position of which are adapted to the short pores after the flange, and is used to give way to the flanged short pores when the four-way valve tube contacts the bottom surface of the transverse material stopper to avoid crushing the flange.

[0057] In the above-mentioned positioning and flanging mechanism, the transfer structure includes at least two supporting plates respectively located below the two ends of the four-way valve tube, and at least 4 slots are evenly distributed axially on the top of the supporting plate. A material loading platform, a positioning loading platform, a short-hole flanging platform and a D-hole flanging platform are evenly arranged along the axial direction of the supporting plate, and the spacing between each platform is adapted to the spacing between the slots. A lifting assembly and a transverse movement assembly are provided between the supporting plate and the frame.

[0058] The support plate is located at the lower side of both ends of the four-way valve tube. Driven by the lifting assembly and the transverse movement assembly, it can be raised and lowered, and moved transversely. It can lift the four-way valve tube and move it to the top of the next station and then put it down, so as to achieve the effect of moving the four-way valve tube in sequence between the stations. The notch is used for the specific limit of the four-way valve tube to ensure the stability of the support and movement process. The support plate continues to move in a cycle of rising, transverse movement, lowering, and resetting. In each cycle, the four-way valve tube on each station can be simultaneously supported to the next station, and the transfer efficiency is high. The material carrier is located at the end of the pre-inspection adjustment mechanism, and is used to carry qualified four-way valve tubes after the pre-inspection is completed and the circumferential angle is adjusted.

[0059] In the above-mentioned positioning and flanging mechanism, the transverse movement component includes a transfer slide connected to the frame in a horizontal sliding manner, and the transfer slide is connected to the output end of the horizontal transfer cylinder whose cylinder body is fixed on the frame; the lifting component includes a lifting slide connected to the transfer slide in a vertical sliding manner, and the lifting slide is connected to the output end of the lifting cylinder whose cylinder body is fixed on the transfer slide, and the supporting plate is fixed on the lifting slide; a magnetic suction component is provided in the groove; and a material unloading slope is provided at the tail end of the supporting plate.

[0060] The lateral sliding table and the horizontal transfer cylinder are used to realize the lateral movement, and the lifting sliding table and the lifting cylinder are used to realize the lifting movement. The magnetic suction assembly on the notch can ensure the stable transfer of the four-way valve tube and avoid or reduce unnecessary rotation of the tube body during transportation. The tail end of the conveying plate is provided with a material discharge slope, which corresponds to the bottom of the D-hole flanging table when rising, and is used to separate the four-way valve tube from the groove of the D-hole flanging table and make it roll down with the slope to complete the discharge. The corresponding finished product basket can be docked and set below the bottom.

[0061] In the above-mentioned positioning flanging mechanism, a lubricating oil quantitative conveyor is also provided on the frame, and an oiling port is provided on the first clutch slide of the short-hole flanging structure and the second clutch slide of the D-hole flanging structure. The lubricating oil quantitative conveyor is connected to the oiling port through an oil pipe.

[0062] The lubricating oil quantitative conveyor is used to supply lubricating oil to the upper oil port, reduce running resistance, and alleviate parts wear. The upper oil port is connected to the relative sliding surfaces including but not limited to the first clutch slide and the second clutch slide.

[0063] As an optimization, the lubricating oil quantitative conveyor includes a pumping cylinder body, a piston is slidably connected in the pumping cylinder body, an oil storage chamber is formed between the piston and the pumping cylinder body, an oil inlet interface and an oil outlet interface are connected to the oil storage chamber, the oil inlet interface is connected to the oil storage tank, and the oil inlet interface and the oil outlet interface are provided with a one-way valve, and the piston is driven by the piston driving structure to move to compress or expand the oil storage chamber.

[0064] The present lubricating oil metering conveyor is used for quantitatively conveying lubricating oil, wherein the oil storage tank is used for storing the liquid to be conveyed, a cylindrical oil storage chamber is arranged in the pumping cylinder body, the oil storage chamber is closed by a piston, the piston driving structure is used for driving the axial movement of the piston to change the pressure inside the oil storage chamber, an annular seal is provided between the piston and the inner wall of the oil storage chamber, a one-way valve is provided on the oil inlet interface and the oil outlet interface, so that the interface can only be used for the input or output of the liquid, when the piston is withdrawn and the pressure is reduced, the oil inlet interface draws the liquid in the oil storage tank into the oil storage chamber, and conversely, the liquid in the oil storage chamber is pressed out from the oil outlet interface, and the single pressing amount is the liquid stock in the oil storage chamber, thereby achieving the effect of quantitative conveying.

[0065] In the above-mentioned lubricating oil metering conveyor, the piston driving structure includes a driving chamber arranged between the piston and the pumping cylinder body, the driving chamber and the oil storage chamber are respectively located on both sides of the piston, and the driving chamber is provided with an air inlet joint and an air outlet joint, and the air inlet joint and the air outlet joint are connected to the gas power assembly through an electromagnetic valve assembly.

[0066] A driving chamber and an oil storage chamber are formed on both sides of the piston, respectively. The gas power assembly is connected to the driving chamber and is used to drive the movement of the piston, which is equivalent to a cylinder. The solenoid valve assembly is used to control the passage between the gas power assembly and the driving chamber. The gas power assembly and the solenoid valve assembly are common knowledge and will not be elaborated in detail.

[0067] In the above-mentioned lubricating oil quantitative conveyor, a flow rate regulating structure is provided on the pumping cylinder body, and the flow rate regulating structure includes a speed regulating valve assembly arranged on the air inlet joint, and a speed regulating knob is provided on the speed regulating valve assembly.

[0068] The flow rate regulating structure is used to adjust the channel size of the air inlet joint, thereby controlling the speed of gas entry, controlling the rate of change of the driving chamber pressure, and achieving the effect of controlling the flow rate of the liquid output from the oil storage chamber. It can be applied to application scenarios with different flow rate requirements.

[0069] In the above-mentioned lubricating oil quantitative conveyor, the piston driving structure includes a driving motor, the driving motor is arranged on the pumping cylinder, and the piston is connected to the output end of the driving motor through a screw transmission assembly or a gear rack assembly.

[0070] As another feasible solution for the piston driving structure, the driving motor drives the axial movement of the piston through a corresponding transmission structure, and the transmission structure can be implemented by including but not limited to a screw transmission assembly or a gear rack assembly.

[0071] Specifically, the screw transmission assembly includes a screw rod passing through the pumping cylinder body and a nut meshed with the screw rod, the nut is fixedly connected to the piston, and the screw rod is transmission-connected to the output end of the driving motor. The output end of the driving motor is rotated to drive the screw rod to rotate, thereby achieving the effect of controlling the nut to move axially on the screw rod, thereby achieving the axial movement control of the piston. The gear rack assembly includes a rack axially arranged on the upper end of the piston, and the rack is meshed with the gear on the output end of the driving motor. The rack is fixedly arranged on the upper end of the piston in the same direction, and the gear on the output end of the driving motor is meshed with the rack. The output end of the driving motor is rotated to achieve the effect of driving the rack to move axially, thereby controlling the extension and retraction action of the piston.

[0072] In the above-mentioned lubricating oil metering conveyor, a flow regulating structure is also provided between the side of the piston away from the oil storage chamber and the pumping cylinder body. The flow regulating structure includes a fine-tuning micrometer arranged on the piston cylinder body. The telescopic axis of the fine-tuning micrometer is located on the movable path of the piston and is used to limit the maximum pull-out distance of the piston.

[0073] The flow regulating structure controls the volume of the oil storage chamber by limiting the maximum pull-out distance of the piston, thereby controlling the flow rate of a single liquid output. This is specifically achieved through a fine-tuning micrometer. The telescopic shaft of the fine-tuning micrometer is located on the active path of the piston. When the piston is pulled out, it is against the telescopic shaft. At this time, the oil storage chamber is fully absorbed with liquid at one time. By adjusting the axial position of the telescopic shaft, the maximum pull-out distance of the piston can be adjusted, thereby achieving effective control of the single output liquid volume.

[0074] In the above-mentioned lubricating oil quantitative conveyor, the fine-adjustment micrometer includes a mounting seat fixed on the pumping cylinder body and a telescopic shaft and an adjustment handle arranged on the mounting seat. A transmission assembly is provided between the telescopic shaft and the adjustment handle, which is used to control the telescopic movement of the telescopic shaft by rotating the adjustment handle; a locking knob is threadedly connected to the mounting seat, and the locking end of the locking knob abuts against the outer wall of the telescopic shaft.

[0075] The telescopic shaft and the adjustment handle are arranged on the pumping cylinder body through the mounting seat. The transmission assembly is used to realize the transmission from the circumferential rotation of the adjustment handle to the axial extension and contraction of the telescopic shaft. This is the prior art and will not be expanded. The locking knob is screwed on the pumping cylinder body. When the locking knob is screwed in, the locking end abuts against the telescopic shaft to limit the telescopic movement of the telescopic shaft. When it is screwed out, the limit is released. The operation is convenient and the single flow state of the current adjustment can be stabilized.

[0076] In the above-mentioned lubricating oil quantitative conveyor, a docking rod is provided at the upper end of the piston, and the docking rod and the telescopic shaft of the fine-tuning micrometer are located on the same straight line. An observation port is provided on the side of the pumping cylinder body, and the observation port is located on the side of the docking rod and the telescopic shaft.

[0077] The piston is docked with the telescopic shaft through a docking rod, and the docking rod passes through the docking rod through-hole to exit the driving cavity. The docking rod and the docking rod through-hole are circumferentially sealed to ensure the sealing of the driving cavity. The observation port exposes the outer end of the internal docking rod and the lower end of the telescopic shaft, which is convenient for real-time inspection of the matching status between them.

[0078] In the above-mentioned lubricating oil quantitative conveyor, the oil storage tank is connected to the oil inlet interface through a pipeline, and a filter assembly is provided on the pipeline. The pipeline between the oil storage tank and the oil inlet interface is connected in series with a filter assembly for filtering impurities in the passing liquid to ensure the quality of the output liquid.

[0079] In the above-mentioned lubricating oil quantitative conveyor, the top of the oil storage tank is provided with a liquid filling port, a tank cover is detachably provided on the liquid filling port, and an air filter is provided on the vent hole on the tank cover. The liquid filling port is used to add corresponding liquid to the oil storage tank, the tank cover is detachably provided and used to close the liquid filling port, the vent hole is used to balance the air pressure inside and outside the tank body to ensure the smooth output of the internal liquid, and the air filter is used to filter the passing air to prevent impurities from entering the tank.

[0080] In the above-mentioned lubricating oil quantitative conveyor, a liquid level indicating structure is provided on the oil storage tank, and the liquid level indicating structure includes a float floating on the liquid surface, an indicating rod is connected to the float, and the indicating rod extends upward from a through hole at the upper end of the oil storage tank; and / or the liquid level indicating structure also includes a liquid level gauge assembly arranged on the side of the oil storage tank.

[0081] The float floats on the liquid surface, and the indicator rod extends from the upper end of the oil storage tank. By observing the height of the indicator rod, the internal liquid level can be judged. Furthermore, the indicator rod is provided with a scale, which can indicate the specific amount of internal liquid. In addition, a liquid level gauge assembly can be set on the side of the oil storage tank to directly display the internal liquid level. The liquid level gauge assembly is common knowledge and will not be elaborated in detail.

[0082] Another object of the present invention is to address the above-mentioned problems in the prior art and to propose a flanging process for a four-way valve tube.

[0083] In order to achieve the innovation, this purpose of the present invention can be achieved through the following technical solutions: a flanging process for a four-way valve tube, suitable for the above-mentioned four-way valve tube flanging machine, including the following steps: S1, the feeding mechanism pushes the four-way valve tube to be processed to the pre-inspection loading platform, and makes the end of the tube body frictionally connected with the rotating disk; S2, the rotating disk rotates, and the penetration detection component detects the qualified situation of the three-hole position and the position of the D hole at the same time. After the detection is completed, the feeding mechanism exits and resets; S3, the steering adjustment structure grabs the four-way valve tube and moves it to the top of the loading platform to be processed, and the four-way valve tube with the D hole offset is adjusted. The steering is adjusted until the D hole is located on the same front side or rear side, and the adjustment is completed and placed on the waiting platform; S4, the waiting platform tilts to remove the NN material that fails the inspection; S5, the supporting plate transfers the qualified four-way valve tube to the positioning platform for positioning, so that the four-way valve tube is in a state with three holes facing upward; S6, the supporting plate transfers the positioned four-way valve tube to the short-hole flanging table for short-hole flanging treatment; S7, the supporting plate transfers the four-way valve tube with short-hole flanging to the D-hole flanging table for D-hole flanging treatment; S8, the supporting plate lifts the processed four-way valve tube and discharges the material through the cutting slope.

[0084] This flanging processing technology realizes a series of actions including loading, pre-inspection, steering adjustment, NG material removal, positioning adjustment, short hole flanging, D hole flanging, and finished product discharge. Each action is carried out in an orderly flow, with a high degree of automation. Moreover, each workstation works simultaneously, and the processing efficiency is high.

[0085] Compared with the prior art, the present invention mainly has the following advantages:

[0086] 1. The pre-inspection adjustment mechanism is used to perform corresponding inspection and adjustment on the four-way valve tube. Specifically, it can inspect the position and penetration of the four holes. It can also be used to rotate and adjust the four-way valve tube with the D hole offset setting so that the D holes are located at the unified front or rear side, ensuring smooth cooperation with the subsequent D hole flanging structure.

[0087] 2. The positioning and flanging mechanism is mainly used to adjust the circumferential angle of the four-way valve tube to a state with three holes facing upwards, and to perform outward flanging operations on the short holes and D holes of the four-way valve tube. The rotational positioning rotates the four-way valve tube to a preset angle by the rotational positioning structure to ensure smooth docking and cooperation with the subsequent processing structure. The short hole flanging structure specifically realizes the flanging processing from the inside to the outside, and the D hole flanging structure specifically realizes the flanging processing of the D hole of the four-way valve tube from the inside to the outside. The transfer structure is used to realize the sequential transfer of the four-way valve tube at each processing station, realizing the assembly line flanging processing of the short holes and D holes of the four-way valve tube, with a high degree of mechanization.

[0088] 3. The lubricating oil metering conveyor can be used to quantitatively convey the lubricating oil. The piston driving structure is used to drive the axial movement of the piston to change the pressure inside the oil storage chamber, thereby achieving the effect of pumping the liquid in the oil storage tank into the oil storage chamber and outputting the liquid in the oil storage chamber. Since only the liquid in the oil storage chamber is output during a single action, the goal of single quantitative delivery is ensured.

[0089] 4. The flanging process realizes a series of actions including loading, pre-inspection, steering adjustment, NG material removal, positioning adjustment, short-hole flanging, D-hole flanging, and finished product discharge. Each action is carried out in an orderly manner with a high degree of automation. Moreover, each station works at the same time, and the processing efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] Figure 1 It is a schematic diagram of the overall appearance provided by the present invention;

[0091] Figure 2 It is a schematic diagram of the internal structure provided by the present invention;

[0092] Figure 3 It is a front view schematic diagram of the four-way valve pipe provided by the present invention;

[0093] Figure 4 It is a structural schematic diagram of the pre-check adjustment mechanism provided by the present invention;

[0094] Figure 5 It is a structural schematic diagram of the rotation structure of the pre-check adjustment mechanism provided by the present invention;

[0095] Figure 6 It is a schematic diagram of the cooperation between the material-waiting carrier and the third linear drive provided by the present invention;

[0096] Figure 7It is a structural schematic diagram of the ejector rod provided by the present invention;

[0097] Figure 8 It is a structural schematic diagram of the material storage box provided by the present invention;

[0098] Fig. 9 It is a structural schematic diagram of the rotation positioning structure provided by the present invention;

[0099] Fig.10 It is a structural schematic diagram of the short pore flanging structure provided by the present invention;

[0100] Fig.11 Mode Fig.10 A magnified detail of the center point A;

[0101] Fig.12 It is a structural schematic diagram of the D-hole flanging structure provided by the present invention;

[0102] Fig.13 yes Fig.12 A magnified view of the detail at B in the middle;

[0103] Fig.14 It is a schematic diagram of the cooperation between the lifting seat and the flanging punch provided by the present invention;

[0104] Fig.15 It is a schematic diagram of a demoulding blocking assembly and a D-hole flanging table provided by the present invention;

[0105] Fig.16 It is a structural schematic diagram of the transfer structure provided by the present invention;

[0106] Fig.17 It is a structural schematic diagram of the lubricating oil quantitative conveyor provided by the present invention;

[0107] Fig.18 It is a simplified cross-sectional schematic diagram of the interior of the pumping cylinder provided by the present invention.

[0108] In the figure, a frame 200, a four-way valve tube 201, an S hole 202, a D hole 203, a short hole 204, a feeding mechanism 204, a pre-inspection adjustment mechanism 205, a positioning flanging mechanism 206, a lubricating oil quantitative conveyor 207, a pre-inspection loading platform 1, a loading groove 2, a rotating abutment structure 3, a jacking feeding structure 4, a penetration detection component 5, an abutment platform 6, a rotating disk 7, a rotating drive component 8, a laser detector 9, a steering adjustment mechanism 10, a clamping jaw component 11, a clamping jaw lifting structure 12, a rotating structure 13, a clamping jaw cylinder 14, an arc-shaped clamp body 15, a lifting slide 16, a first linear drive 17, a driving rack 18, a second linear drive 19, a rotating mounting shaft 20, a driving gear 21, a translation slide 22, a waiting loading platform 23, a translation drive structure 24, a third linear drive 25, a third linear drive 26, a feeding slide 27, a jacking rod 28, a jacking head 29, a positioning cone 30,

[0109] Positioning loading platform 40, short hole flanging platform 41, D hole flanging platform 42, rotating positioning structure 43, short hole flanging structure 44, D hole flanging structure 45, transfer structure 46, tube body rotating assembly 47, limit rod 48, limit rod lifting assembly 49, lifting cylinder 50, roller 51, rotating disk 52, first clutch slide 53, first motor 54, first clutch cylinder 55, flanging column 56, second clutch slide 57, punch needle installation hole 58, small hole flanging punch needle 59, second clutch cylinder 60, pressing group Component 61, lower pressure block 62, lower pressure electric cylinder 63, positioning column 64, guide cone 65, flanging punch 66, demoulding blocking assembly 67, lifting seat 68, punch mounting hole 69, demoulding block 70, horizontal material blocking part 71, flanging short hair hole make way groove 72, support plate 73, transfer slide 74, horizontal transfer cylinder 75, lifting slide 76, lifting cylinder 77, magnetic suction assembly 78, material discharge slope 79, oiling port 80, make way gap 81, elastic telescopic assembly 82, notch 83, punch lifting cylinder 84,

[0110] Oil storage tank 90, pumping cylinder body 91, piston 92, oil storage chamber 93, oil inlet interface 94, oil outlet interface 95, piston drive structure 96, drive chamber 97, solenoid valve assembly 98, air intake joint 99, speed control valve assembly 100, speed control knob 101, fine adjustment micrometer 102, mounting seat 103, telescopic shaft 104, adjustment handle 105, locking knob 106, docking rod 107, observation port 108, filter assembly 109, liquid filling port 110, box cover 111, air filter 112, liquid level indication structure 113, indication rod 114, liquid level meter assembly 115, material storage box 120, loading top block 121, top block lifting assembly 122, docking channel 123, strip through hole 124, top block guide hole 125. DETAILED DESCRIPTION

[0111] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0112] Specific implementation examples Figure 1-18 As shown, the four-way valve tube flanging machine includes a frame 200, on which a feeding mechanism 204, a pre-inspection adjustment mechanism 205 and a positioning flanging mechanism 206 are provided; the feeding mechanism 204 is used to push the four-way valve tube 201 to be processed to the pre-inspection adjustment mechanism 205, and abut against it; the pre-inspection adjustment mechanism 205 includes a rotating abutment structure 3 and a steering adjustment structure 10, the rotating abutment structure 3 is used to circumferentially rotate the four-way valve tube 201, and a penetration detection component 5 is provided on the side of the four-way valve tube 201, and the steering adjustment structure 10 is used to reject NG materials or adjust the direction of qualified materials according to the detection results; the positioning flanging mechanism 206 is used to perform rotation positioning, short pore flanging and D-hole flanging processing on the four-way valve tube that has passed the pre-inspection and has completed the direction adjustment, and discharge the material after the processing is completed, and the positioning flanging mechanism 206 includes a transfer structure 46, which is used to transfer the four-way valve tube between each processing station in turn.

[0113] Specifically, the four-way valve tube flanging machine of the present invention is used to perform pre-inspection, steering adjustment, NG material rejection, rotation positioning, short pore flanging, and D-hole flanging processing on the four-way valve tube 201, wherein the feeding mechanism 204 is used to feed the four-way valve tube 201 from the corresponding storage box 120 to the pre-inspection adjustment mechanism 205, the pre-inspection adjustment mechanism 205 rotates the four-way valve tube, and performs penetration detection through the penetration detection component 5 during the rotation process, which is used to detect the penetration qualification of the three holes and the position of the D hole. The D hole position is divided into The centering setting and the offset setting, since the offset position is not fixed, it may be located at the front side or the rear side, the steering adjustment structure 10 is used to rotate the four-way valve tube so that the D hole is located at the same front side or rear side, which is convenient for the subsequent positioning and flanging mechanism 206. After the positioning and flanging mechanism 206 adjusts the four-way valve tube to have three holes facing upwards, the short pores and the D holes are specifically flanging. The four-way valve tube is transferred between the processing stations through the transfer structure 46, which has a high degree of mechanization and automation, and can efficiently complete the inspection and flanging processing of the four-way valve tube.

[0114] like Figure 4-7As shown, the pre-inspection adjustment mechanism 205 of the four-way valve tube flanging machine includes a pre-inspection loading platform 1 arranged on the frame 200, and the pre-inspection loading platform 1 is provided with a loading groove 2 adapted to the outer diameter of the four-way valve tube, a rotating abutment structure 3 is provided on the downstream side of the pre-inspection loading platform 1, and a jacking feeding structure 4 is provided on the upstream side, which is used to send the four-way valve tube onto the pre-inspection loading platform 1 and make the front end frictionally connected with the rotating surface of the rotating abutment structure 3, and the side of the four-way valve tube is provided with at least three groups of penetration detection components 5 radially opposite to its E, S, and C holes respectively, and the frame 200 is also provided with a steering adjustment mechanism 10, which is used to adjust the direction of the four-way valve tube according to the detection result of the penetration detection component 5 for the position of the D hole.

[0115] Specifically, the pre-inspection adjustment mechanism 205 is used to perform corresponding inspection and adjustment on the four-way valve tube. The four-way valve tube is provided with four holes, namely E, S, C, and D, wherein the E, S, and C holes are evenly arranged axially on one side of the tube body, and the D hole is arranged on the opposite side, wherein the S hole 202 is in the center, and the E and C holes are arranged at both ends. Different styles of four-way valve tubes have different positions of the D hole 203, which may be centered and directly opposite to the S hole 202, or may be offset and opposite to the E and C holes. The pre-inspection adjustment mechanism first detects the positions and penetration conditions of the four holes, and adjusts the four-way valve tube according to the detected position of the D hole. It is particularly used to rotate and adjust the four-way valve tube with an offset D hole so that the D hole is located at a uniform front or rear side, to ensure smooth cooperation with the subsequent D hole flanging structure. Among them, the pre-inspection loading platform 1 is used to carry the four-way valve tube to be processed, the loading groove 2 can achieve a good positioning effect, and the pushing feeding structure is used to push the four-way valve tube onto the pre-inspection loading platform 1, which has a loading function. At the same time, the end of the four-way valve tube can be pushed on the rotating surface, and the rotating surface and the end of the four-way valve tube are frictionally connected. The rotating abutment structure 3 is used to drive the four-way valve tube to rotate circumferentially to ensure that the penetration detection component 5 completes at least 360 degrees of circumferential detection of the four-way valve tube. The penetration detection component 5 is used to realize a specific detection function, and the steering adjustment mechanism 10 is used to grab the four-way valve tube and perform a corresponding 180-degree steering adjustment when necessary.

[0116] like Figure 4 As shown, the rotary abutment structure 3 includes an abutment platform 6, and the abutment platform 6 is rotatably connected to a rotating disk 7 near the pre-inspection loading platform 1. The rotating disk 7 is driven to rotate by a rotating drive assembly 8, and a rotating surface is formed on the rotating disk 7. A docking boss adapted to the caliber of the four-way valve pipe is provided on the rotating surface, and an easy-entry guide angle is provided on the outer periphery of the docking boss.

[0117] Specifically, the rotating disk 7 is rotatably connected to the inner side of the pre-inspection loading platform 1, and the rotating drive assembly 8 includes a first motor arranged on the frame 200. The output end of the first motor is connected to the rotating disk 7 for driving the rotating disk 7 to rotate, thereby driving the four-way valve tube frictionally driven therewith to rotate. The docking boss can dock with the four-way valve tube, and the easy-entry guide angle is used for guidance. After the docking is completed, the rotating surface and the axis of the four-way valve tube coincide, ensuring the stable rotation of the four-way valve tube.

[0118] like Figure 4 As shown, the penetration detection component 5 includes a laser detector 9, which is fixed on the frame 200 and radially faces the four-way valve tube in one-to-one correspondence with the E, S, and C holes, and is used to detect the qualified conditions of the E, S, C, and D holes and the position of the D hole.

[0119] Specifically, the penetration detection component 5 is implemented by a laser detector 9. The laser detector 9 can emit radial laser to the four-way valve tube, and its receiver receives the reflected light, and judges the situation of each hole according to the reflection situation. For example, when the laser is irradiated to the E, S, and C hole positions, the laser is reflected by the inner wall of the four-way valve tube, the reflection distance increases, and the received reflection intensity decreases accordingly, which can be used to detect the positions of the three holes. When the D hole is opposite to the middle S hole, the laser emitted by the laser detector 9 of the middle group completely penetrates the four-way valve tube, and the reflection distance is further increased. At this time, the position of the D hole can be determined.

[0120] like Figure 4 , 5 As shown, the steering adjustment mechanism 10 includes a clamping jaw assembly 11 and a clamping jaw lifting structure 12 disposed between the clamping jaw assembly 11 and the frame 200, and a rotating structure 13 is disposed between the clamping jaw assembly 11 and the clamping jaw lifting structure 12. The clamping jaw lifting structure 12 includes a lifting slide 16 disposed on the frame 200, and a first linear drive 17 is vertically disposed on the frame 200, and the output end of the first linear drive 17 is connected to the lifting slide 16; the rotating structure 13 includes a driving rack 18 penetrating the lifting slide 16, and the driving rack 18 is driven by the second linear drive 19 to axially telescopically move, and a rotating mounting shaft 20 is vertically rotatably connected to the lifting slide 16, and a driving gear 21 meshing with the driving rack 18 is sleeved on the rotating mounting shaft 20, and the clamping jaw assembly 11 is disposed on the rotating mounting shaft 20. The clamp lifting structure 12 is arranged on a translation slide 22 , which is slidably connected to the frame 200 and is driven by a translation driving structure 24 to translate, so as to transfer the four-way valve tube to the material loading platform 23 after the clamp assembly 11 grabs the four-way valve tube.

[0121] Specifically, the clamp assembly 11 is used to grab the four-way valve tube, and the clamp lifting structure 12 is used to drive the lifting action of the clamp assembly 11. When descending, it grabs or places the four-way valve tube, and when ascending, it raises the four-way valve tube to a suitable position to ensure the smooth rotation of the four-way valve tube. The rotating structure 13 is used to rotate the clamp assembly 11, thereby achieving the purpose of rotating the four-way valve tube, and its rotation angle is 180 degrees as a unit. Specifically, the clamp assembly 11 includes a clamp cylinder 14, and a group of arc-shaped claw bodies 15 that can be relatively closed or separated are provided on the output end of the clamp cylinder 14, and the inner arc opening of the arc-shaped claw body 15 is adapted to the outer diameter of the four-way valve tube. The lifting slide 16 can be vertically lifted and lowered on the frame 200. The first linear drive 17 is used to drive the lifting and lowering action of the lifting slide 16. A rotating mounting shaft 20 is provided on the lifting slide 16. The second linear drive 19 is used to pull the axial movement of the driving rack 18, thereby realizing the rotation of the driving gear 21 meshing therewith. The driving gear 21 drives the rotating mounting shaft 20 to rotate, thereby realizing the effect of rotating the four-way valve tube. The clamp lifting structure 12 is also arranged on the translation slide 22, and the translation drive structure 24 drives the translation slide 22 to translate, so that the four-way valve tube can be grabbed from the pre-inspection loading platform 1 and moved to the waiting loading platform 23. The translation drive structure 24 includes a fourth linear drive 25 arranged on the frame 200, and the output end of the fourth linear drive 25 is connected to the translation slide 22. The rotation of the four-way valve tube can be carried out on the waiting loading platform 23 to avoid interference with the relevant structures of the pre-inspection. At the same time, it is also beneficial to perform the operations of pre-inspection and steering adjustment of the two four-way valve tubes at the same time, thereby improving the processing efficiency.

[0122] like Figure 6 As shown, the material carrier 23 can be hinged on the frame 200 in a vertically flippable manner. The frame 200 is provided with a third linear drive 26. The output end of the third linear drive 26 is connected to the rotating end of the material carrier 23, which is used to push the rotating end to tilt the material carrier 23 to remove the material.

[0123] Specifically, the material-waiting platform 23 also has a material-picking function, one end of which is hinged on the frame 200, and the other end can be lifted vertically to a tilted state, the tilted material-picking side is connected to an NG material basket, and the four-way valve tube can slide into the NG material basket due to the height difference, thereby realizing the collection of NG materials, wherein the rotation of the material-waiting platform 23 is realized by the third linear drive 26, and the rotation control is realized by lifting the rotating end of the material-waiting platform 23 through the output end of the third linear drive 26.

[0124] As an optimization, the frame 200 is provided with a feed slide 27 docking with the pre-inspection loading platform 1, and the ejection feeding structure 4 includes an ejection rod 28 axially moving in the feed slide 27, and the ejection rod 28 is arranged on the translation slide 22, and the translation slide 22 is slidably connected to the frame 200 and driven by the translation driving structure 24 to move translationally. An ejection head 29 is provided at one end of the ejection rod 28 near the pre-inspection loading platform 1, and a positioning cone 30 adapted to the caliber of the four-way valve pipe is provided on the ejection head 29; the ejection head 29 is rotatably connected to the mounting column at the end of the ejection rod 28, and a bearing assembly is provided between the ejection head 29 and the ejection rod 28. A buffer elastic member is provided between the ejection head 29 and the ejection rod 28, and the two ends of the buffer elastic member are respectively against the inner end surface of the ejection head 29 and the limiting step on the inner side of the mounting column; the bearing assembly includes a plane bearing, and the buffer elastic member is sleeved on the mounting column, and the two ends are respectively against the inner end surface of the ejection head 29 and the inner ring of the plane bearing.

[0125] Specifically, a feed slide 27 is provided on the upstream side of the pre-inspection loading platform 1, and the slide is located on the same straight line as the loading groove 2. The ejector rod 28 is driven by the translation drive structure 24 to move axially in the feed slide 27, and is used to push the upstream four-way valve tube to the pre-inspection loading platform 1 to achieve automatic loading. An ejector head 29 is provided at the end of the ejector rod 28, and the ejector head 29 specifically abuts against the rear end of the four-way valve tube. The bearing assembly allows the ejector head 29 to rotate freely relative to the ejector rod 28, ensuring that the rotating abutment structure 3 drives the four-way valve tube to rotate smoothly. The positioning cone 30 on the ejector head 29 is used to dock with the end of the four-way valve tube to ensure stable ejection. The elastic buffer allows the ejector head 29 to have a certain axial elastic expansion space, which reduces the requirements for the movement accuracy of the ejector rod 28, and also avoids the ejector rod 28 being directly stopped and the related components being damaged by the impact of the rotating abutment structure 3.

[0126] like Figure 2 , 8 As shown, a rectangular storage box 120 is obliquely arranged on the side of the feed chute 27, and a loading top block 121 is provided between the bottom and the side of the storage box 120. The loading top block 121 is driven to lift and lower by a top block lifting assembly 122, and is used to push the low-positioned four-way valve tube 201 along the side wall to the upper edge, and the upper edge is connected to a docking channel 123 for the four-way valve tube to roll toward the upstream of the feed chute 27.

[0127] Specifically, the four-way valve tubes 201 to be processed are stacked in parallel and orderly in the storage box 120. The storage box 120 is tilted, and its lower side is the side close to the feed chute 27, so that the four-way valve tube 201 has a tendency to roll toward this side. The loading top block 121 is lifted and lowered along the side wall of this side, which is used to push the four-way valve tube 201 upward. After the tube body is pushed out of the upper edge, it rolls into the feed chute 27 through the docking channel 123, thereby achieving the effect of automatic loading.

[0128] In this embodiment, the top block lifting assembly 122 includes a top block lifting cylinder, and a strip through hole 124 is provided on the side wall of the storage box 120 near the feed slide 27. The output end of the top block lifting cylinder is fixedly connected to the loading top block 121 through the strip through hole 124. A top block guide hole 125 is provided on the bottom of the storage box 120 near the strip through hole, and the loading top block 121 slides in the strip through hole 125.

[0129] like Figure 9-16 As shown, the positioning and flanging mechanism 206 of the four-way valve tube flanging machine includes a positioning loading platform 40, a short hole flanging platform 41 and a D hole flanging platform 42 which are arranged on the frame 200; a rotating positioning structure 43 is provided between the positioning loading platform 40 and the frame 200, which is used to rotate the four-way valve tube 201 circumferentially to adjust the E, S and C holes to face upward; a short hole flanging structure 44 is provided between the short hole flanging platform 41 and the frame 200, which is used to flanging the short holes 204 at both ends of the four-way valve tube 201 outwards; a D hole flanging structure 45 is provided between the D hole flanging platform 42 and the frame 200; a transferring structure 46 is also provided on the frame 200, which is used to transfer the four-way valve tube 201 to the positioning loading platform 40, the short hole flanging platform 41 and the D hole flanging platform 42 in sequence.

[0130] Specifically, the positioning and flanging mechanism 206 is mainly used to adjust the circumferential angle of the four-way valve tube to a state where the three holes face upward, and to perform outward flanging operations on the short pores 204 and the D hole 203 of the four-way valve tube 201, wherein the rotation positioning is performed on the positioning loading platform 40, and the four-way valve tube is rotated to a preset angle by the rotation positioning structure 43 to ensure smooth docking and cooperation with the subsequent processing structure, and the short pore flanging processing is performed on the short pore flanging platform 41, and the short pore flanging structure 44 Specifically, the flanging process is realized from the inside to the outside. The D-hole flanging is performed on the D-hole flanging table 42. The D-hole flanging structure 45 performs flanging process on the D-hole of the four-way valve tube from the inside to the outside. The transfer structure 46 is used to realize the sequential transfer of the four-way valve tube at each processing station. Of course, the front and rear positions of the short-hole flanging table 41 and the D-hole flanging table 42 can be interchanged. In order to ensure stable load-bearing, corresponding grooves are provided on the positioning loading table 40, the short-hole flanging table 41 and the D-hole flanging table 42.

[0131] like Fig. 9As shown, the rotating positioning structure 43 includes a tube rotating assembly 47 and a limit rod 48 located above the positioning loading platform 40, and a limit rod lifting assembly 49 is provided between the limit rod 48 and the frame 200. The positioning head at the lower end of the limit rod 48 rolls on the outer wall of the four-way valve tube. The position of the positioning head corresponds to the S hole 202, and the outer diameter is between the aperture of the D hole and the aperture of the S hole, and can be inserted into the S hole 202 to prevent rotation. The limit rod lifting assembly 49 includes a lifting cylinder 50 whose cylinder body is fixed on the frame 200, the output end of the lifting cylinder 50 is fixedly connected to the limit rod 48, and the positioning head includes a roller 51; the tube body rotating assembly 47 includes a rotating disk 52 respectively located on the two axial sides of the positioning loading platform 40, the rotating disk 52 is rotatably connected to the inner side of the first clutch slide 53, the first clutch slide 53 is driven by the first clutch driving assembly to move closer to or away from the four-way valve tube, and is used to make the rotating disk 52 close to the end of the four-way valve tube for friction transmission, and the rotating disk 52 is transmission-connected to the output end of the first motor 54.

[0132] Specifically, the limit rod 48 is vertically arranged above the positioning loading platform 40 so as to be liftable, and the limit rod lifting assembly 49 is used to specifically drive the lifting action of the limit rod 48. The positioning head at the lower end of the limit rod 48 is in contact with the outer wall of the four-way valve tube and has a tendency to move downward. The tube body rotating assembly 47 is used to drive the circumferential rotation of the four-way valve tube. As the tube body rotates, the lower end of the limit rod 48 rolls or slides on the tube wall. When the limit rod 48 is opposite to the S hole 202, it is inserted into the hole, thereby limiting the continued rotation of the four-way valve tube, and achieving the effect of adjusting the four-way valve tube to three holes facing upward. The positioning head size is between the D hole and the S hole, that is, it will not be inserted into the D hole 203. The limit rod 48 is connected to the output end of the lifting cylinder 50, and the extension and retraction action of the limit rod 48 is realized by the extension and retraction of the output end of the lifting cylinder 50. A roller 51 is provided on the positioning head, and the roller 51 is in rolling contact with the outer wall of the four-way valve tube, and will not scratch the tube wall. The tube body rotating assembly 47 drives the four-way valve tube to rotate through the rotating disk 52. The rotating disk 52 is arranged on the first clutch slide 53, and can be driven by the first clutch driving assembly to move closer to or away from the four-way valve tube. The first clutch slide 53 is slidably connected to the frame 200. The first clutch driving assembly includes a first clutch cylinder 55 whose cylinder body is fixed on the frame 200. The output end of the first clutch cylinder 55 is connected to the first clutch slide 53 of the machine. A docking protrusion adapted to the tube diameter of the four-way valve tube can also be arranged on the rotating disk 52 to ensure the stability of the docking. As the first clutch slide 53 moves closer to the positioning loading platform 40, the rotating disk 52 is close to the end of the four-way valve tube to realize friction transmission. When it is away from the positioning loading platform 40, the contact is released to ensure that the four-way valve tube can smoothly enter and exit the positioning loading platform 40. The first motor 54 specifically drives the rotation of the rotating disk 52 to achieve the effect of rotating the four-way valve tube.

[0133] As an optimization of this embodiment, an elastic insertion component is provided between the positioning head and the limiting rod 48, so that the positioning head maintains a downward elastic tendency after contacting the outer wall of the four-way valve tube so as to be inserted when encountering three holes.

[0134] like Fig.10 , 11 As shown, the short hole flanging structure 44 includes a flanging column 56 located in two axial directions of the four-way valve tube, and a small hole flanging punch 59 is vertically arranged on the upper side of the flanging column 56. The flanging column 56 is arranged on the inner side of the second clutch slide 57, and the second clutch slide 57 is slidably connected to the frame 200 and driven by the second clutch drive component to move close to or away from the four-way valve tube. A pressing component 61 is arranged above the short hole flanging platform 41, and the short hole flanging platform 41 is connected to the frame 200 through an elastic telescopic component. The pressing component 61 includes a pressing block 62 slidably connected to the frame 200, the pressing block 62 is connected to the output end of the pressing electric cylinder 63, and the bottom surface of the pressing block 62 is provided with a docking groove adapted to the outer diameter of the four-way valve tube; a positioning column 64 is vertically arranged on the pressing block 62, the positioning column 64 is vertically opposite to the S hole, and a guide cone 65 is arranged at the lower end, and the guide cone 65 is lower than the bottom of the docking groove.

[0135] Specifically, a small hole flanging punch 59 pointing vertically upward is provided on the flanging column 56. The flanging column 56 is arranged on the second clutch slide 57 and can be extended to insert into or move out of the four-way valve tube under the drive of the second clutch drive component. After the flanging column 56 is extended and inserted into place, the small hole flanging punch 59 is just located directly below the short hole. The pressing component 61 is used to press the four-way valve tube downward. As the four-way valve tube continues to descend and translate, the small hole flanging punch 59 penetrates upward into the short hole to achieve the effect of flanging the short hole outward. The elastic telescopic component is used to ensure that the short hole flanging platform 41 has a certain downward elastic retraction ability to ensure the pressing operation of the pressing component 61 on the four-way valve tube. The lower pressing block 62 is driven by the lower pressing electric cylinder 63 to rise and fall, and the docking groove at the bottom of the lowering block docks with the four-way valve tube to ensure stable downward pressure. The positioning column 64 on the lower pressing block 62 is used to make a certain circumferential angle adjustment in the process of the lower pressing block 62 approaching the four-way valve tube to ensure that the small hole flanging punch 59 is accurately docked with the short pore, and the guiding cone surface 65 at the lower end of the positioning column 64 is used to specifically contact the periphery of the three holes to move the four-way valve tube to the three holes facing upward.

[0136] In this embodiment, the second clutch slide 57 is slidably connected to the frame 200 , and the second clutch drive assembly includes a second clutch cylinder 60 whose cylinder body is fixed to the frame 200 , and the output end of the second clutch cylinder 60 is connected to the second clutch slide 57 .

[0137] As an optimization, a plurality of punch needle mounting holes 58 are provided on the upper side of the flanging column 56, and the small hole flanging punch needle 59 is detachably fixed in the punch needle mounting hole 58. The outer diameter of the flanging column 56 is smaller than the inner diameter of the four-way valve tube, and can be inserted into the four-way valve tube so that the small hole flanging punch needle 59 is located below the flanging hole. A plurality of punch needle mounting holes 58 are provided, and a suitable installation position can be selected according to the specific spacing between the short pores and the end of the four-way valve tube. The small hole flanging punch needle 59 and the punch needle mounting hole 58 are detachably fixed, which is convenient for disassembly and adjustment.

[0138] As an optimization, two positioning column mounting grooves are provided at the bottom of the lower pressure block 62, and the positioning column 64 is fixed in the positioning column mounting groove. The maximum outer diameter of the guide cone 65 is adapted to the inner diameter of the S hole of the four-way valve tube, and the distance between the lower end and the bottom of the docking groove is smaller than the diameter of the four-way valve tube.

[0139] Specifically, there are multiple positioning column mounting grooves, but they all correspond to at least one of the three holes. The positioning column 64 can be removably fixed in the positioning column mounting groove, and the disassembly and assembly are flexible. The lowest position of the guide cone surface 65 does not exceed the lower inner wall of the four-way valve tube, which avoids the positioning column 64 from hitting the inner wall of the four-way valve tube and avoids unnecessary influence on the D hole.

[0140] like Fig.12 , 13 As shown in Figures 15, the D-hole flanging structure 45 includes a flanging punch 66 arranged above the D-hole flanging platform 42. The flanging punch 66 is arranged on the frame 200 through a punch lifting assembly. The maximum outer diameter of the flanging punch 66 is smaller than the inner diameter of the three holes, and the position corresponds to the vertical direction of the D-hole. It can pass through the three holes to flanging the D-hole. A demolding blocking assembly 67 for vertically limiting the four-way valve tube is also provided on the frame 200. A clearance notch 81 corresponding to the position of the flanging punch 66 is provided on the D-hole flanging platform 42. The punch lifting assembly includes a lifting seat 68 slidably connected to the frame 200. Two punch mounting holes 69 are provided at the bottom of the lifting seat 68. The punch mounting holes 69 are respectively opposite to the S hole and the E or C hole. The flanging punch 66 is detachably fixed in the punch mounting hole 69. The lifting seat 68 is connected to the punch lifting cylinder 84. The demolding blocking assembly 67 includes an L-shaped demolding block 70 fixed to the frame 200. The transverse material blocking portion 71 of the demolding block 70 is located directly above the end of the four-way valve tube.

[0141] Specifically, the flanging punch 66 is driven to lift by the punch lifting assembly. The flanging punch 66 is used to insert into the D hole to realize outward flanging. Its outer diameter is smaller than the inner diameter of the three holes to ensure smooth cooperation with the D hole through the three holes. The demoulding blocking assembly 67 is used to prevent the four-way valve tube from being driven upward by the flanging punch 66 when the flanging punch 66 is completed and withdrawn, ensuring that the flanging punch 66 is withdrawn from the D hole. The clearance notch 81 is used to make way for the downward flanging of the D hole. The lifting seat 68 can slide vertically, and the output end of the punch lifting cylinder 84 is connected to the lifting seat 68 to drive the lifting action of the lifting seat 68. A plurality of punch mounting holes 69 are provided at the bottom of the lifting seat 68, one of which is opposite to the S hole and is centrally arranged, and the other is opposite to the E or C hole and is offset. It can be used for processing the four-way valve tube with the D hole centered or offset. The flanging punch 66 and the punch mounting hole 69 can be detachably fixed and have flexible detachability. The demolding block 70 is in an inverted L-shape, and its transverse stopper portion 71 is located above the end of the four-way valve tube, which is used to prevent the four-way valve tube from rising and moving synchronously with the rising of the flanging punch 66, thereby ensuring the smooth withdrawal of the flanging punch 66. Of course, a certain gap is provided between the transverse stopper portion 71 and the four-way valve tube, thereby ensuring that the transfer structure 46 carries the four-way valve tube to the D-hole flanging table 42.

[0142] As an optimization of this embodiment, a flanged short pore giving way groove 72 is provided at the bottom of the transverse material stopper 71, and the width and position of the flanged short pore giving way groove 72 are adapted to the short pores after the flanged edge, so as to give way to the flanged short pores when the four-way valve tube contacts the bottom surface of the transverse material stopper 71, thereby avoiding crushing the flanged edge.

[0143] like Fig.16 As shown, the transfer structure 46 includes two supporting plates 73 respectively located below the two ends of the four-way valve tube, and four notches 83 are evenly distributed axially on the top of the supporting plate 73. The material loading platform 23, the positioning material loading platform 40, the short hole flanging platform 41 and the D hole flanging platform 42 are evenly arranged along the axial direction of the supporting plate 73, and the spacing between each platform is adapted to the spacing between the notches 83. A lifting assembly and a transverse movement assembly are provided between the supporting plate 73 and the frame 200.

[0144] Specifically, the support plate 73 is located at the lower side of both ends of the four-way valve tube. Under the drive of the lifting assembly and the lateral movement assembly, it can be lifted and moved horizontally, and the four-way valve tube can be lifted and moved to the top of the next station and then put down, so as to achieve the effect of sequentially moving the four-way valve tube between the stations. The notch 83 is used for the specific limit of the four-way valve tube to ensure the stability of the support and movement process. The support plate 73 continues to move in a cycle of rising, lateral movement, lowering, and resetting. In each cycle, the four-way valve tube on each station can be simultaneously supported to the next station, and the transfer efficiency is high. The material carrier 23 is located at the end of the pre-inspection adjustment mechanism, and is used to carry the qualified four-way valve tube after the pre-inspection is completed and the circumferential angle is adjusted.

[0145] As a specific optimization, the transverse movement component includes a transfer slide 74 horizontally slidably connected to the frame 200, and the transfer slide 74 is connected to the output end of the horizontal transfer cylinder 75 whose cylinder body is fixed on the frame 200; the lifting component includes a lifting slide 76 vertically slidably connected to the transfer slide 74, and the lifting slide 76 is connected to the output end of the lifting cylinder 77 whose cylinder body is fixed on the transfer slide 74, and the supporting plate 73 is fixed on the lifting slide 76; a magnetic suction component 78 is provided in the groove 83; and a material unloading slope 79 is provided at the rear end of the supporting plate 73.

[0146] Specifically, the lateral sliding table and the horizontal transfer cylinder 75 are used to realize the lateral movement, and the lifting sliding table 76 and the lifting cylinder 77 are used to realize the lifting movement. The magnetic suction assembly 78 is arranged on the notch 83 to ensure the stable transfer of the four-way valve tube, avoiding or reducing unnecessary rotation of the tube body during transportation. The tail end of the conveying plate 73 is provided with a material discharge slope 79, which corresponds to the bottom of the D-hole flanging table 42 when rising, and is used to separate the four-way valve tube from the groove of the D-hole flanging table 42 and make it roll down with the slope to complete the discharge, and a corresponding finished product basket can be docked and arranged below the bottom.

[0147] As a further optimization, a lubricating oil quantitative delivery device 207 is also provided on the frame 200, and an oiling port 80 is provided on the first clutch slide 53 of the short hole flanging structure 44 and the second clutch slide 57 of the D hole flanging structure 45, and the lubricating oil quantitative delivery device is connected to the oiling port 80 through an oil pipe.

[0148] like Fig.17 , 18 As shown, the lubricating oil metering conveyor 207 includes an oil storage tank 90 and a pumping cylinder 91, a piston 92 is slidably connected inside the pumping cylinder 91, an oil storage chamber 93 is formed between the piston 92 and the pumping cylinder 91, an oil inlet interface 94 and an oil outlet interface 95 are connected to the oil storage chamber 93, the oil inlet interface 94 is connected to the oil storage tank 90, and a one-way valve is provided on the oil inlet interface 94 and the oil outlet interface 95, and the piston 92 is driven by the piston driving structure 96 to move to compress or expand the oil storage chamber 93.

[0149] Specifically, the lubricating oil metering conveyor 207 is used for quantitatively conveying lubricating oil, wherein the oil storage tank 90 is used to store the lubricating oil to be conveyed, and a cylindrical oil storage chamber 93 is provided in the pumping cylinder 91, and the oil storage chamber 93 is closed by a piston 92. The piston driving structure 96 is used to drive the axial movement of the piston 92 to change the pressure inside the oil storage chamber 93. An annular seal is formed between the piston 92 and the inner wall of the oil storage chamber 93. A one-way valve is provided on the oil inlet interface 94 and the oil outlet interface 95, so that the interface can only be used for the input or output of lubricating oil. When the piston 92 is withdrawn and the pressure decreases, the oil inlet interface 94 draws the lubricating oil in the oil storage tank 90 into the oil storage chamber 93. Conversely, the lubricating oil in the oil storage chamber 93 is pressed out from the oil outlet interface 95. The single squeeze-out amount is the oil liquid stock in the oil storage chamber 93, thereby achieving the effect of quantitative conveying.

[0150] like Fig.17 , 18 As shown, the piston driving structure 96 includes a driving chamber 97 disposed between the piston 92 and the pumping cylinder 91, the driving chamber 97 and the oil storage chamber 93 are respectively located on both sides of the piston 92, and the driving chamber 97 is provided with an air inlet joint 99 and an air outlet joint, and the air inlet joint 99 and the air outlet joint are connected to the gas power assembly through the electromagnetic valve assembly 98. The pumping cylinder 91 is provided with a flow rate regulating structure, and the flow rate regulating structure includes a speed regulating valve assembly 100 disposed on the air inlet joint 99, and a speed regulating knob 101 is provided on the speed regulating valve assembly 100.

[0151] Specifically, a driving chamber 97 and an oil storage chamber 93 are formed on both sides of the piston 92, and the gas power assembly is connected to the driving chamber 97 to drive the movement of the piston 92, which is equivalent to a cylinder, and the solenoid valve assembly 98 is used to control the channel between the gas power assembly and the driving chamber 97. The flow rate adjustment structure is used to adjust the channel size of the air inlet joint 99, thereby controlling the speed of gas entry, controlling the pressure change rate of the driving chamber 97, and achieving the effect of controlling the flow rate of the liquid output of the oil storage chamber 93, which can be applied to application scenarios with different flow rate requirements.

[0152] like Fig.17As shown, a flow regulating structure is also provided between the side of the piston 92 away from the oil storage chamber 93 and the pumping cylinder 91, and the flow regulating structure includes a fine-adjustment micrometer 102 provided on the cylinder of the piston 92, and a telescopic shaft 104 of the fine-adjustment micrometer 102 is located on the movable path of the piston 92, and is used to limit the maximum pull-out distance of the piston 92. The fine-adjustment micrometer 102 includes a mounting seat 103 fixed on the pumping cylinder 91, and a telescopic shaft 104 and an adjustment handle 105 provided on the mounting seat 103. A transmission assembly is provided between the telescopic shaft 104 and the adjustment handle 105, and is used to control the telescopic movement of the telescopic shaft 104 by rotating the adjustment handle 105; a locking knob 106 is threadedly connected to the mounting seat 103, and the locking end of the locking knob 106 abuts against the outer wall of the telescopic shaft 104. A docking rod 107 is provided at the upper end of the piston 92 , and the docking rod 107 and the telescopic shaft 104 of the fine-tuning micrometer 102 are located on the same straight line. An observation port 108 is provided on the side of the pumping cylinder body 91 , and the observation port 108 is located on the side of the docking rod 107 and the telescopic shaft 104 .

[0153] Specifically, the flow regulating structure controls the volume of the oil storage chamber 93 by limiting the maximum pull-out distance of the piston 92, thereby controlling the flow rate of a single liquid output, which is specifically achieved through the fine-tuning micrometer 102. The telescopic shaft 104 of the fine-tuning micrometer 102 is located on the movable path of the piston 92. When the piston 92 is pulled out, it is against the telescopic shaft 104. At this time, the oil storage chamber 93 is in a state of being fully absorbed by liquid. By adjusting the axial position of the telescopic shaft 104, the maximum pull-out distance of the piston 92 can be adjusted, thereby achieving effective control of the single output liquid volume. The telescopic shaft 104 and the adjustment handle 105 are arranged on the pumping cylinder 91 through the mounting seat 103. The transmission assembly is used to realize the transmission from the circumferential rotation of the adjustment handle 105 to the axial extension of the telescopic shaft 104. This is the prior art and will not be expanded. The locking knob 106 is screwed on the pumping cylinder 91. When the locking knob 106 is screwed in, the locking end abuts against the telescopic shaft 104 to limit the telescopic action of the telescopic shaft 104. When it is screwed out, the limit is released. The operation is convenient and the single flow state of the current adjustment can be stabilized. The piston 92 is docked with the telescopic shaft 104 through the docking rod 107. The docking rod 107 passes through the driving chamber 97 through the docking rod through hole. The docking rod 107 and the docking rod through hole are circumferentially sealed to ensure the sealing of the driving chamber 97. The observation port 108 exposes the outer end of the docking rod 107 and the lower end of the telescopic shaft 104, which is convenient for real-time inspection of the matching state between them.

[0154] As an optimization of this embodiment, the oil storage tank 90 is connected to the oil inlet interface 94 through a pipeline, and a filter assembly 109 is provided on the pipeline. The filter assembly 109 is connected in series on the pipeline between the oil storage tank 90 and the oil inlet interface 94 to filter impurities in the oil to ensure the quality of the output lubricating oil.

[0155] As an optimization of this embodiment, a liquid filling port 110 is provided on the top of the oil storage tank 90 , a tank cover 111 is detachably provided on the liquid filling port 110 , and an air filter 112 is provided on the vent hole on the tank cover 111 .

[0156] Specifically, the filling port 110 is used to add lubricating oil to the oil storage tank 90, and the box cover 111 is detachably arranged to close the filling port 110. Its vent hole is used to balance the air pressure inside and outside the box to ensure the smooth output of the internal oil, and the air filter 112 is used to filter the passing air to prevent impurities from entering the box.

[0157] As a further optimization, a liquid level indicating structure 113 is provided on the oil storage tank 90. ​​The liquid level indicating structure 113 includes a float floating on the liquid surface, and an indicating rod 114 is connected to the float. The indicating rod 114 extends upward from a through hole at the upper end of the oil storage tank 90. ​​The liquid level indicating structure 113 also includes a liquid level meter assembly 115 arranged on the side of the oil storage tank 90.

[0158] Specifically, the float floats on the liquid surface, and the indicator rod 114 passes through the upper end of the oil storage tank 90. ​​The height of the internal liquid level can be judged by observing the height of the indicator rod 114. Furthermore, a scale is provided on the indicator rod 114, and the scale can indicate the specific amount of internal oil. In addition, a liquid level meter assembly 115 is also provided on the side of the oil storage tank 90 to directly display the internal liquid level.

[0159] The flanging process of the four-way valve tube provided by the present invention comprises the following steps:

[0160] S1, the ejector rod pushes the four-way valve tube to be processed to the pre-inspection loading platform, and makes the end of the tube body frictionally connected with the rotating disk;

[0161] S2, the rotating disk rotates, and at the same time the laser detector detects the qualified status of the three hole positions and the position of the D hole. After the detection is completed, the feeding mechanism exits and resets;

[0162] S3, the clamping claw assembly grabs the four-way valve tube and moves it to the top of the material-waiting platform, and adjusts the four-way valve tube with the D hole offset setting so that the D hole is located at the same front side or rear side, and puts it on the material-waiting platform after the adjustment is completed;

[0163] S4, the material-waiting platform tilts and removes the NN materials that fail the inspection;

[0164] S5, the conveying plate transfers the qualified four-way valve tube to the positioning loading platform for positioning, so that the four-way valve tube is in a state where three holes face upward;

[0165] S6, the conveying plate transfers the positioned four-way valve tube to the short hole flanging station for short hole flanging processing;

[0166] S7, the conveying plate transfers the four-way valve tube with the short hole flanging completed to the D-hole flanging station for D-hole flanging processing;

[0167] S8. The conveying plate lifts the processed four-way valve tube and discharges it through the cutting slope.

[0168] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A four-way valve tube flanging machine, comprising a frame (200), characterized in that: The frame (200) is provided with a feeding mechanism (204), a pre-checking adjustment mechanism (205) and a positioning flanging mechanism (206); The feeding mechanism (204) is used to push the four-way valve tube (201) to be processed toward the pre-inspection adjustment mechanism (205); The pre-inspection adjustment mechanism (205) comprises a rotating abutment structure (3) and a steering adjustment structure (10), wherein the rotating abutment structure (3) is used to circumferentially rotate the four-way valve tube (201), a penetration detection component (5) is provided on the side of the four-way valve tube (201), and the steering adjustment structure (10) is used to reject NG materials or adjust the direction of qualified materials according to the detection results; The positioning and flanging mechanism (206) is used to sequentially perform rotation positioning, short pore flanging and D-hole flanging processing on the four-way valve tube (201) that has passed the pre-inspection and completed the orientation adjustment, and discharge the material after the processing is completed. The positioning and flanging mechanism (206) includes a transfer structure (46) for sequentially transferring the four-way valve tube (201) between each processing station.

2. The four-way valve tube flanging machine according to claim 1, characterized in that: The pre-inspection adjustment mechanism comprises a pre-inspection loading platform (1) arranged on a frame (200), the pre-inspection loading platform (1) is provided with a loading groove (2) adapted to the outer diameter of the four-way valve tube, the downstream side of the pre-inspection loading platform (1) is provided with a rotating abutment structure (3), and the upstream side is provided with a pushing feeding structure (4), which is used to send the four-way valve tube onto the pre-inspection loading platform (1) and make the front end frictionally connected with the rotating surface of the rotating abutment structure (3), the rotating abutment structure (3) comprises an abutment platform (6), the abutment platform (6) is rotatably connected with a rotating disk (7) near the pre-inspection loading platform (1), the rotating disk (7) is driven to rotate by a rotating drive assembly (8), and the rotating disk (7) is formed with the rotating surface; The penetration detection assembly (5) comprises a laser detector (9), which is fixed on the frame (200) and radially faces the four-way valve pipe in a one-to-one correspondence with the E, S, and C holes, and is used to detect the qualified conditions of the E, S, C, and D holes and the position of the D hole.

3. The four-way valve tube flanging machine according to claim 2, characterized in that: The steering adjustment mechanism (10) comprises a clamping jaw assembly (11) and a clamping jaw lifting structure (12) arranged between the clamping jaw assembly (11) and a frame (200), and a rotating structure (13) is arranged between the clamping jaw assembly (11) and the clamping jaw lifting structure (12); The clamping jaw lifting structure (12) is arranged on a translation slide (22), and the translation slide (22) is slidably connected to the frame (200) and driven by the translation driving structure (24) to translate and move, and is used to transfer the four-way valve tube to the material loading platform (23) after the clamping jaw assembly (11) grasps the four-way valve tube; The rotating structure (13) comprises a driving rack (18) which is inserted into the lifting slide (16); the driving rack (18) is driven by a second linear drive (19) to perform axial telescopic movement; a rotating mounting shaft (20) is vertically rotatably connected to the lifting slide (16); a driving gear (21) which meshes with the driving rack (18) is sleeved on the rotating mounting shaft (20); and the clamping jaw assembly (11) is arranged on the rotating mounting shaft (20); The material-waiting platform (23) is hingedly connected to the frame (200) in a vertically flippable manner, and a rotating material-picking driving component is provided between the material-waiting platform (23) and the frame (200).

4. The four-way valve tube flanging machine according to claim 1, characterized in that: The positioning flanging mechanism comprises a positioning loading platform (40), a short hole flanging platform (41) and a D hole flanging platform (42) arranged on a frame (200); a rotating positioning structure (43) is arranged between the positioning loading platform (40) and the frame (200), which is used to rotate the four-way valve tube in a circumferential direction to adjust the three holes E, S and C to face upward; a short hole flanging structure (44) is arranged between the short hole flanging platform (41) and the frame (200), which is used to flanging the short holes (204) at both ends of the four-way valve tube (201) outward; a D hole flanging structure (45) is arranged between the D hole flanging platform (42) and the frame (200); and a transfer structure (46) is also arranged on the frame (200), which is used to transfer the four-way valve tube to the positioning loading platform (40), the short hole flanging platform (41) and the D hole flanging platform (42) in sequence.

5. The four-way valve tube flanging machine according to claim 4, characterized in that: The rotation positioning structure (43) comprises a tube body rotation assembly (47) and a limit rod (48) located above the positioning loading platform (40); a limit rod lifting assembly (49) is provided between the limit rod (48) and the frame (200); a positioning head at the lower end of the limit rod (48) slides or rolls on the outer wall of the four-way valve tube; the position of the positioning head corresponds to at least one of the three holes, and the outer diameter is between the aperture of the D hole (203) and the aperture of the three holes, and can be inserted into the hole to prevent rotation; The tube body rotating assembly (47) includes a rotating disk (52) respectively located on the two axial sides of the positioning loading platform (40), and the rotating disk (52) is rotatably connected to the inner side of the first clutch slide (53). The first clutch slide (53) is driven by the first clutch driving assembly to move closer to or away from the four-way valve tube, so as to make the rotating disk (52) close to the end of the four-way valve tube (201) for friction transmission. The rotating disk (52) is transmission-connected to the output end of the first motor (54).

6. The four-way valve tube flanging machine according to claim 4, characterized in that: The short hole flanging structure (44) comprises a flanging column (56) located in two axial directions of the four-way valve tube (201), a small hole flanging punch (59) is vertically arranged on the upper side of the flanging column (56), the flanging column (56) is arranged on the inner side of the second clutch slide (57), the second clutch slide (57) is slidably connected to the frame (200), and is driven by the second clutch drive component to move closer to or away from the four-way valve tube, a pressing component (61) is arranged above the short hole flanging platform (41), and the short hole flanging platform (41) is connected to the frame (200) through an elastic telescopic component; The pressing assembly (61) comprises a pressing block (62) slidably connected to the frame (200), the pressing block (62) being connected to the output end of the pressing electric cylinder (63), and the bottom surface of the pressing block (62) being provided with a docking groove adapted to the outer diameter of the four-way valve pipe; A positioning column (64) is vertically arranged on the lower pressing block (62), the positioning column (64) is vertically opposite to at least one of the three holes, and a guiding cone surface (65) is arranged at the lower end, and the guiding cone surface (65) is lower than the bottom of the docking groove.

7. The four-way valve tube flanging machine according to claim 4, characterized in that: The D-hole flanging structure (45) comprises a flanging punch (66) arranged above the D-hole flanging platform (42); the flanging punch (66) is arranged on the frame (200) through a punch lifting assembly; the maximum outer diameter of the flanging punch (66) is smaller than the inner diameter of the three holes, and the position corresponds to the vertical direction of the D-hole, and can pass through the three holes to flanging the D-hole; the frame (200) is also provided with a demoulding blocking assembly (67) for vertically limiting the four-way valve tube; the D-hole flanging platform (42) is provided with a clearance notch (81) corresponding to the position of the flanging punch (66); the demoulding blocking assembly (67) comprises an L-shaped demoulding blocking block (70) fixed on the frame (200); the transverse material blocking portion (71) of the demoulding blocking block (70) is located directly above the end of the four-way valve tube.

8. The four-way valve tube flanging machine according to claim 4, characterized in that: The transfer structure (46) comprises at least two supporting plates (73) respectively located below the two ends of the four-way valve tube, at least four notches (83) are evenly distributed axially on the top of the supporting plate (73), and a material loading platform (23), a positioning material loading platform (40), a short-hole flanging platform (41) and a D-hole flanging platform (42) are evenly arranged along the axial direction of the supporting plate (73), and the spacing between each platform is adapted to the spacing between the notches (83). A lifting component and a transverse movement component are provided between the supporting plate (73) and the frame (200), a magnetic suction component (78) is provided in the notch (83), and a material unloading inclined surface (79) is provided at the rear end of the supporting plate (73).

9. The four-way valve tube flanging machine according to any one of claims 1 to 8, characterized in that: The frame (200) is also provided with a lubricating oil quantitative conveyor (207), and at least the first clutch slide (53) of the short-hole flanging structure (44) and the second clutch slide (57) of the D-hole flanging structure (45) are provided with an oiling port (80), and the lubricating oil quantitative conveyor (207) is connected to the oiling port (80) through an oil delivery pipe; The lubricating oil quantitative conveyor (207) comprises an oil storage tank (90) and a pumping cylinder (91), a piston (92) is slidably connected inside the pumping cylinder (91), an oil storage chamber (93) is formed between the piston (92) and the pumping cylinder (91), an oil inlet interface (94) and an oil outlet interface (95) are connected to the oil storage chamber (93), the oil inlet interface (94) is connected to the oil storage tank (90), and one-way valves are provided on the oil inlet interface (94) and the oil outlet interface (95), and the piston (92) is driven by a piston driving structure (96) to move to compress or expand the oil storage chamber (93); The piston driving structure (96) includes a driving chamber (97) arranged between the piston (92) and the pumping cylinder (91), the driving chamber (97) and the oil storage chamber (93) are respectively located on both sides of the piston (92), and the driving chamber (97) is provided with an air inlet connector (99) and an air outlet connector, and the air inlet connector (99) and the air outlet connector are connected to the gas power component through the solenoid valve component (98).

10. A flanging process for a four-way valve tube, characterized in that: The four-way valve tube flanging machine applicable to any one of claims 1 to 9 comprises the following steps: S1, the feeding mechanism pushes the four-way valve tube to be processed to the pre-inspection loading platform, and makes the end of the tube body frictionally connected with the rotating disk; S2, the rotating disk rotates, and the penetration detection component detects the qualified status of the three holes and the position of the D hole. After the detection is completed, the feeding mechanism exits and resets; S3, the steering adjustment structure grabs the four-way valve tube and moves it to the top of the material-waiting platform, and the four-way valve tube with the D hole offset is steered and adjusted so that the D hole is located at the same front side or rear side, and the adjustment is completed and placed on the material-waiting platform; S4, the material-waiting platform tilts and removes the NN materials that fail the inspection; S5, the conveying plate transfers the qualified four-way valve tube to the positioning loading platform for positioning, so that the four-way valve tube is in a state where three holes face upward; S6, the conveying plate transfers the positioned four-way valve tube to the short hole flanging station for short hole flanging processing; S7, the conveying plate transfers the four-way valve tube with the short hole flanging completed to the D-hole flanging station for D-hole flanging processing; S8. The conveying plate lifts the processed four-way valve tube and discharges it through the cutting slope.

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