CN113198895B

CN113198895B - Edge wrenching machine and working method thereof

Info

Publication number: CN113198895B
Application number: CN202110463383.6A
Authority: CN
Inventors: 张跃; 陈榆; 徐国新; 吴红波
Original assignee: Broad Sustainable Building Co
Current assignee: Broad Sustainable Building Co
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2023-03-17
Anticipated expiration: 2041-04-28
Also published as: CN113198895A

Abstract

An edge wrenching machine and a working method thereof are disclosed, wherein the edge wrenching machine comprises a feeding device, a platform and a conveying device arranged on the platform; at least one side of the conveying device is provided with a pipe body edge pulling device used for pulling the end part of the pipe body, a pipe body material buckling device used for buckling the pipe body after edge pulling and a finished product inspection device used for detecting whether the pipe body buckles the material. The invention also comprises a working method of the edge wrenching machine. According to the invention, by arranging the conveying device and arranging the punching, edge pulling, material buckling and detecting devices on the side surface of the conveying device, the whole process of feeding, punching, edge pulling, material buckling and outputting of the pipe body can be automatically completed at one time, the working efficiency is greatly improved, and the working strength is reduced.

Description

Edge wrenching machine and working method thereof

Technical Field

The invention relates to pipe body edge wrenching equipment, in particular to an edge wrenching machine and a working method thereof.

Background

When the pipe body is connected with the panel in a brazing mode, a wrench edge is usually arranged at the end portion of the pipe body to increase the connection area between the pipe body and the panel and further increase the connection strength, and the pipe body is connected with brazing filler metal to enable the pipe body to be connected with the panel in a brazing mode through the brazing filler metal. And when the tube body and the panel are in braze welding connection, the tube body needs to be placed in a brazing furnace for carrying out, because the tube body is brazed at high temperature, if the tube body is a stainless steel tube body, the tube body is easy to oxidize in a high-temperature environment, and the tube body is easy to expand by heating, so that the tube body needs to be punched. In order to realize the above operation, it is necessary to design an automation device for continuously processing the tube body, which includes loading, punching, edge pulling, brazing filler metal buckling, detecting and outputting, etc., and this requires a complete process of the above steps, and after the tube body enters the device, the two ends of the tube body are ensured to be edge pulled and the brazing filler metal buckled for outputting.

At present, the equipment that carries out the processing of whole set of process to the body has not appeared among the prior art, the operation that divides mostly, if pull the limit to the body on an equipment, detain material etc. to the body on another equipment, this just needs to carry out a lot of switching to the body, can greatly increased operating time, lead to work efficiency to descend, in addition, current conveyor only places the body in it and carries, can not carry out the centre gripping fixed to the body, it removes to make the body produce very easily in transportation process, can not guarantee the distance between the adjacent body, thereby lead to the body can't align with the mould of equipment etc., reliability and poor stability.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the edge wrenching machine and the working method thereof, wherein the edge wrenching machine has high reliability and stability, high working efficiency and high automation degree.

The technical scheme of the invention is as follows:

the invention discloses an edge wrenching machine which comprises a feeding device, a platform and a conveying device arranged on the platform; at least one side of the conveying device is provided with a pipe body edge pulling device used for pulling the end part of the pipe body, a pipe body material buckling device used for buckling the pipe body after edge pulling and a finished product inspection device used for detecting whether the pipe body buckles the material.

Further, the conveying device comprises a conveying chain, and a plurality of grippers for gripping the pipe body are arranged on the conveying chain at intervals; the gripper comprises at least one group of grippers which are arranged oppositely, the grippers are of a bending structure, the bending parts of the grippers are controlled to move through springs, and the tube body is gripped through the springs.

Further, a feeding manipulator is arranged between the feeding device and the conveying device.

Further, the pipe body edge wrenching device comprises a positioning die and an edge wrenching die which are arranged on two sides of the conveying device; the positioning die is used for fixing the pipe body; the edge wrenching die is used for pressing the end part of the pipe body out of the edge wrenching.

Further, the pipe body buckling device comprises a material disc for winding the material belt, a guide groove for guiding the material belt on the material disc, a first lifting clamping mechanism for driving the material belt on the guide groove to move up and down, a cutting mechanism for cutting the material belt moving to a target position, a material taking mechanism for clamping the cut material body, and a buckling mechanism for buckling the material body on the side of the pipe body pulling side for fixing.

Furthermore, the material taking mechanism comprises a material taking manipulator, the material taking manipulator rotates the taken material body to the direction same as that of the pipe body and sends the material body to the transition pitch-changing mechanism, the material body comprises at least one brazing ring, and the distance between the brazing ring and the distance between the adjacent pipe bodies is consistent through the transition pitch-changing mechanism.

Further, be equipped with between charging tray and the guide way and take inductive pick-up for whether detect the material and take the material to feed on and take and whether pull tightly, the material is taken and is passed through from the below that takes inductive pick-up.

Further, the finished product inspection device comprises a bracket arranged on the output mechanism, and a color difference detection sensor used for detecting whether the end part of the pipe body is buckled or not is arranged on the bracket; and a rejection part is arranged behind the detection part.

Furthermore, a punching device is further arranged on the front side of the pipe body edge wrenching device.

The invention relates to a working method of a flanging machine, which comprises the following steps:

s1: feeding: placing the pipe body in a feeding device, outputting the pipe body through the feeding device, transferring the pipe body to a conveying device, and clamping the pipe body by the conveying device to convey the pipe body forwards;

s2: punching: punching a hole at the position of the pipe body close to the end part;

s3: primary edge wrenching: conveying the pipe body to the side of a pipe body edge-wrenching device, positioning the pipe body and pressing out an edge wrenching angle of 45 to 55 degrees;

s4, secondary edge wrenching: positioning the pipe body and extruding a 90-degree pulling edge to enable the pulling edge to be finally vertical to the pipe body;

s5: material buckling: conveying the pipe body after edge pulling to the side of a pipe body material buckling device for positioning, cutting the material belt to form a material body, and buckling the material body on the edge pulling side of the pipe body;

s6: and (3) detection: and outputting the tube body after material buckling, detecting material buckling in the output process, rejecting the tube body if the end part of the tube body is detected not to buckle the material body, and outputting the tube body if the end part of the tube body is detected to buckle the material body.

The invention has the beneficial effects that:

(1) By arranging the conveying device and arranging the punching, edge pulling, material buckling and detecting devices on the side surface of the conveying device, the whole process of feeding, punching, edge pulling, material buckling and outputting the pipe body can be automatically completed at one time, the working efficiency is greatly improved, and the working strength is reduced;

(2) By arranging the conveying device and arranging the clamp holder on the conveying device, the pipe body can be ensured not to fall off in the conveying process, and the reliability and stability of the system operation are greatly improved;

(3) The perforating device is arranged, so that the tube body can be perforated, and when the tube body and the panel are brazed, reducing gas can be filled into the tube body, so that the tube body is prevented from being oxidized in a high-temperature brazing environment; and the device is used for discharging redundant gas in the pipe body to prevent the pipe body from being deformed under pressure;

(4) By arranging the guide groove which comprises the obliquely arranged channel, the path of the material belt can be guided, the stability of the material belt is ensured, and other mechanisms can be arranged on the back of the guide groove, so that the whole structure is compact and the occupied space is small; the material ring extending from the guide groove can be driven to move by arranging the first lifting clamping mechanism, the cutting mechanism and the second lifting clamping mechanism, the material ring moves to the side of the cutting mechanism to be cut off, the cut solder ring is clamped by the second lifting clamping mechanism and is sent into the buckling mechanism, and the movement, the cutting and the conveying of the material belt and the solder ring are completed through continuous operation, so that the intelligent operation is realized, the structure is simple and compact, and the working efficiency is high; by arranging the positioning mechanism, the material belt can be prevented from shaking during cutting, and the cutting stability is greatly improved; by arranging the buckling mechanism, the brazing filler metal ring can be buckled on the pipe body, so that the brazing filler metal ring is prevented from falling off from the pipe body in the conveying process of the pipe body, and the working efficiency is greatly improved;

(5) Through setting up material area inductive pick up, and will take material area inductive pick up to locate the top in material area, can detect whether the material area gets into the guide way, have and to judge whether the material area pulls tightly to make the material area keep lax state.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a top view of the embodiment shown in FIG. 1;

FIG. 3 is a schematic structural diagram of a loading device according to an embodiment of the invention;

FIG. 4 is an enlarged schematic view of the structure of the transport apparatus of the embodiment shown in FIG. 1;

FIG. 5 is a side view of the embodiment shown in FIG. 4;

FIG. 6 is a schematic structural diagram of a pipe fastening device according to an embodiment of the present invention;

FIG. 7 is a schematic view of the structure of the back side of the guide groove of the embodiment shown in FIG. 6;

fig. 8 is a schematic structural diagram of a carrier tape according to an embodiment of the invention;

FIG. 9 is a schematic view of a solder ring fastened to a tube according to an embodiment of the present invention;

fig. 10 is a schematic structural view of the tube body after material buckling according to the embodiment of the invention.

Description of the figures

1. A feeding device; 2. a platform; 3. a conveying device; 4. a first edge wrenching mechanism; 5. a second edge wrenching mechanism; 6. a pipe body buckling device; 7. a pipe body; 8. a feeding manipulator; 9. a material belt; 10. a finished product inspection device;

11. a body; 12. a feeding bin; 13. laminating the board; 14. a conveying platform; 15. a material pushing cylinder; 16. a storage bin; 121. a base plate; 131. a fixing plate; 132. a lifting plate;

31. a conveyor chain; 32. a holder;

61. a material tray; 62. a guide groove; 63. a first lifting clamping mechanism; 64. a cutting mechanism; 65. a fastening mechanism; 66. a connecting plate; 67. positioning holes; 68. a long hole; 69. a strip sensor; 611. a feeding motor; 621. a channel; 622. closing the notch; 631. a linear sliding table; 632. a first lifting cylinder; 633. a finger cylinder; 651. a transfer body; 652. a transferring cylinder; 653. fastening the cylinder; 661. a positioning mechanism;

91. a brazing ring; 92. connecting ribs; 911. a protrusion; 912. a limiting part.

Detailed Description

The invention will be described in further detail below with reference to the drawings and specific examples.

As shown in fig. 1 and 2: a kind of edge wrenching machine, including the loading attachment 1, platform 2 and locating the conveying appliance 3 on the platform 2; at least one side of the conveying device 3 is provided with a tube body edge pulling device for pulling the end part of the tube body 7, a tube body material buckling device 6 for buckling the tube body after edge pulling and a finished product inspection device 10 for detecting whether the tube body is buckled or not. The pipe body edge-wrenching device comprises a first edge-wrenching mechanism 4 and a second edge-wrenching mechanism 5.

The scheme has the following advantages: through setting up conveyor to set up in conveyor's side and pull limit, detain material, detection device, can once only accomplish the material loading of body automatically, pull the limit, detain this whole set of process of material, output, improve work efficiency greatly, reduce working strength.

As shown in fig. 3: in this embodiment, the feeding device 1 includes a machine body 11, and the machine body 11 is provided with a feeding bin 12 and at least two laminates 13 arranged in a step shape; the layer plate 13 comprises a fixing plate 131 and a lifting plate 132, and the lifting plate 132 is driven by an actuating mechanism to move up and down, so that the tube body is gradually lifted to the layer plate 13 at the top along the step-shaped layer plate and is output. The lifting plate 132 is driven by the actuator to move up and down, so that the tube 7 is gradually output along the stepped laminate. This embodiment is through setting up the plywood that the echelonment was arranged, and rises through the lifter plate of plywood, can step by step export the body, and simple structure need not to set up complex structure, like manipulator etc..

Preferably, at least four layers 13 are provided, the bottom layer 13 being connected to the feed magazine 12 and the top layer 13 being connected to the transport platform 14, wherein the transport platform 14 and the top layer also form a stepped structure. Wherein, the plywood of bottom only sets up lifter plate 132, does not set up the fixed plate, is convenient for like this the body 7 in the feeding storehouse 12 directly slides to lifter plate 132 on, rises to the second floor and transports. The fixed plates 131 of the other layer are arranged on the outside and the lifting plates 132 on the inside, which facilitate the gradual movement of the tubes 7 onto the conveyor platform 14.

The bottom plate 121 of the feed bin 12 is arranged obliquely and inclined towards the side of the lifting plate located at the bottom deck. In this way, the tubular bodies 7 entering the feed magazine 12 can slide along the bottom plate 121 to the side of the lifting plate of the bottom deck 13 and be gradually transferred upwards via the lifting plate 132. The fixing plate 131 and the lifting plate 132 are both disposed obliquely, and the high side of each plate is moved into the corresponding tube and the low side is moved out of the corresponding tube. Thus, the tube 7 will slide along the height of the lifting plate 132 to the lower side, enter the fixing plate 131 of the next layer, then slide from the height of the fixing plate 131 to the lower side, lean on the lifting plate 132 of the layer plate which is rising, when the lifting plate 132 descends to the position corresponding to the tube, the tube 7 will automatically fall onto the lifting plate, and the lifting plate is controlled to rise again, thereby realizing the layer-by-layer output of the tube. Wherein, the inclination angle of the fixing plate 131 and the lifting plate 132 is not more than 25 °, preferably 10 °. If the angle is too small, the sliding is not easy, and if the angle is too large, the sliding is easy to occur along the lifting plate 132 during the lowering of the lifting plate 132. The width of the lifting plate 132 matches the outer diameter of the pipe body 7. Thus, during the process of transporting the tube 7 by the lifting plate 132, a plurality of tubes can be transported in the length direction of the lifting plate 132, for example, a row of tubes or at least one tube can be transported on the lifting plate, and only one tube can be accommodated in the width direction.

The actuator uniformly controls all the elevating plates 132 to move up and down at the same time. The actuating mechanism is preferably a lifting cylinder, all lifting plates are connected to the piston end of the lifting cylinder through the mounting plate at the same time, and the mounting plate is driven to move up and down through the piston end, so that the lifting plates are driven to move, namely all the lifting plates ascend and descend together instead of single movement, and ordered layer-by-layer output of the pipe body can be guaranteed.

The plywood at top rises through lifter plate 132 and carries body 5 to conveying platform, and conveying platform connects the body storage silo, and one side of conveying platform 14 is equipped with material pushing cylinder 15, and material pushing cylinder 15 is the cylinder, sets up towards body 5, promotes the body through material pushing cylinder 15, makes the body slide down along body storage silo 16 to material loading manipulator 8 side and stops. The feeding manipulator 8 has at least two grippers, and can place the gripped tube bodies on the conveying device by gripping at least two tube bodies 7. The conveying device 3 is arranged on the side face of the storage bin 16, the gripper of the feeding manipulator 8 corresponds to the position of the station of the conveying device, and the tube body of the storage bin 16 can be horizontally moved to the station of the mechanical device 3 after being gripped.

As shown in fig. 4 and 5: in this embodiment, the conveying device 3 adopts a conveying structure of a motor, a divider and a conveying chain, and the chain of the conveying chain 31 is a group of three stations and is intermittently stepped. The conveying chain 31 is provided with a plurality of holders 32 at intervals for holding the pipe bodies, namely, the middle part of the conveying chain is provided with a gap, and the holders are fixed between the gaps. Each gripper 32 comprises a group of oppositely arranged grippers, each gripper is of a bending structure, the movement of the bending part of each gripper is controlled by a spring, and the tube body is gripped by the spring force. The position of the hand grip for clamping the pipe body is made of flexible materials so as to prevent the pipe body from being damaged. In this embodiment, the middle part of body is held to holder 32, and body 5 transversely sets up, and the both ends of body 5 expose to pull the limit to both ends.

In this embodiment, the front side of the pipe body edge wrenching device is further provided with a punching device for punching the pipe body at a position which is not more than 1/3 of the end part, wherein the aperture is not more than 2mm. Through punching, reducing gas can be filled when the tube body and the panel are brazed conveniently, and the tube body is prevented from being oxidized in a high-temperature brazing environment; and the air exhausting device is used for exhausting redundant air in the pipe body to prevent the pipe body from being deformed under pressure. Wherein, the upper and lower ends of the pipe end are provided with small holes. And conveying the punched pipe body to the side of the pipe body edge wrenching device by the conveying device.

In this embodiment, the tube edge wrenching device includes a positioning mold and an edge wrenching mold disposed on two sides of the conveying device; the positioning die is used for fixing the pipe body; the edge wrenching die is used for pressing the end part of the pipe body out of the edge wrenching. The pipe body edge wrenching device comprises a first edge wrenching mechanism and a second edge wrenching mechanism, wherein the first edge wrenching mechanism comprises a first positioning die for fixing a pipe body and a first edge wrenching die for pressing the end part of the pipe body out of a first edge wrenching edge, and the second edge wrenching mechanism comprises a second positioning die for fixing the pipe body with the first edge wrenching edge and a second edge wrenching die for stamping the pipe body again to form a second edge wrenching edge; the first positioning part and the second positioning part comprise an upper die and a lower die, and the pipe body is arranged in a cavity formed after the upper die and the lower die are closed. The length of the pipe body is larger than the sum of the widths of the conveying chain and the mold, so that after the pipe body is clamped by the clamp, two ends of the pipe body extend out of the mold, and the edge can be pulled conveniently. Wherein, the both sides of body all are equipped with positioning die, and every positioning die all is equipped with mould and bed die, and the cavity internal fixation after its compound die is blocked with the body to last bed die, then the limit mould is pulled to the tip of body then to the pulling limit mould that is located the conveyor and positioning die outside, and the both ends of body all are equipped with pulls the limit mould, can pull the limit once to the both ends of body simultaneously, pull limit angle preferred 50. The upper die and the lower die are provided with three concave cavities after being closed, the edge-pulling die is provided with three pressure cylinders, three pipe bodies can be pulled simultaneously, and the conveying chain is also a group of three stations for intermittent stepping, so that the quantity of the pipe bodies processed by the positioning die and the edge-pulling die is consistent with the quantity of the stations for intermittent stepping of the conveying chain. After the edge is pulled for the first time, the conveying chain continues to convey the pipe body to the side of the second edge pulling mechanism for secondary edge pulling until the edge is pulled to 90 degrees, so that the edge is pulled to be flush with the end part of the pipe body. The second edge wrenching mechanism has the same structure as the first edge wrenching mechanism, and is not further described herein.

As shown in fig. 6 and 7: in this embodiment, the tube body fastening device 6 includes a material tray 61 for winding the material tape, a guide groove 62 for guiding the direction of the material tape 9 on the material tray 61, a first lifting and clamping mechanism 63 for driving the material tape 9 on the guide groove 62 to move up and down, a cutting mechanism 64 for cutting the material tape moved to a target position, a material taking mechanism for clamping the cut material body, and a fastening mechanism 65 for fastening the material body at the side of the tube body.

The quantity of the material device 6 is detained to the body of this embodiment has two, and two body are detained material device 6 and are located conveyor 3's both sides respectively, and two body are detained material device 6 and are staggered the setting, and like this, body 5 is detained the material device through a body earlier and is detained material to its one end, detains the material device through another body again and detains the material to its other end to accomplish the knot material at body both ends.

In the embodiment, the material tray 61 is arranged, so that the material tape 9 can be wound on the material tray 61, the center of the material tray 61 is connected with the feeding motor 611, and the feeding motor 611 controls the material tray 61 to rotate for feeding. Wherein, charging tray 61 is located one side of guide way 62, and is equipped with material area inductive sensor 69 between charging tray 61 and the guide way 62 for whether detect the material area material loading and whether the material area is pulled tightly, material area 9 passes through from the below of material area inductive sensor 69. The strip sensor 69 is arranged above the strip 9, when the strip is pulled tight, the strip sensor is touched, and the strip 9 is made of metal brazing filler metal, so that short circuit is easily caused between the strip 9 and a shell of the sensor, the strip is detected to be pulled tight, and further, the rotation of a material tray is controlled or the rotation speed is increased to enable the strip to be kept in a loose state.

As shown in fig. 8 to 10: the material belt 9 is preferably made of brazing filler metal and is buckled and pressed on the pipe body 7, so that the pipe body 7 can be connected with other workpieces in a brazing mode conveniently, and the brazing filler metal does not need to be laid additionally. The material belt 9 comprises a plurality of brazing filler metal rings 91 which are connected into a whole, each brazing filler metal ring 91 comprises a bulge 911 extending out along a hole and a limiting part 912 arranged at the edge of each brazing filler metal ring, and each limiting part is of a strip-shaped bulge structure; the engaging mechanism 65 inserts the projection 911 of the cut brazing filler metal ring 91 into the pipe body 7, and bends and engages the stopper 912 with the pipe body 7. The material belt 9 is in a long strip shape, the brazing rings 91 are connected through connecting ribs 92, and the position of each connecting rib 92 is cut, so that the cutting of at least one brazing ring 91 is realized.

Through setting up guide way 61, can stabilize the material area, and guide the material area and extend the back from the charging tray and follow the extension to first lift fixture side along the guide way. The guide groove 61 includes at least one inclined channel 621, a closed notch 622 is formed in the channel, and the tape 9 can penetrate through the closed notch 622 from the beginning and penetrate out from the end. The top of the channel 621 is arc-shaped, and the channel extends from the bottom to the top in an inclined manner, so that the material belt extends along the bottom of the channel to the top, and extends downwards to the side of the first lifting and clamping mechanism through the top, and is positioned at the alignment position of the side of the first lifting and clamping mechanism.

The side of the channel 621 extending from the top to the bottom is provided with a connecting plate 66, and the back of the connecting plate 66 is provided with a positioning mechanism 661. The connecting plate 66 is provided with a positioning hole 67 at a position corresponding to the positioning mechanism 661, and the positioning mechanism 661 can be inserted into the solder ring of the tape 9 along the positioning hole 67 for positioning. Wherein, the preferred location cylinder that is preferred to positioning mechanism, the location cylinder realizes the location through stretching into in locating hole 67 inserts brazing filler metal circle 91 for the material area is difficult for rocking when tailorring.

The first lifting clamping mechanism 63 is disposed on the front surface of the connecting plate 66, and the connecting plate 66 is provided with a long hole 68 at a position corresponding to the first lifting clamping mechanism 63, so that the first lifting clamping mechanism 63 penetrates through the long hole 68 to grab the strip and drive the strip to move. First lift fixture 63 includes sharp slip table 631, and first lift cylinder 632 is connected to the slider of sharp slip table, and two cylinders 633 are pointed in first lift cylinder 632 connection, and the tongs that finger cylinder 633 connects can snatch the material area 9 on the passageway respectively.

The cutting mechanism 64 is arranged below the first lifting clamping mechanism 63 and comprises a cutting cylinder and a blade, and the cutting cylinder controls the blade to move so as to cut the material belt.

The material taking mechanism comprises a material taking manipulator, the material taking manipulator rotates the taken material body to the same direction as the pipe bodies and sends the material body to the transition pitch-changing mechanism, the material body comprises at least one brazing ring, and the distance between the brazing ring and the distance between the adjacent pipe bodies is consistent through the transition pitch-changing mechanism. For example: the material belt is sent into cutting mechanism through first lift fixture and is tailor (once tailor 3), takes out by reclaimer manipulator after tailorring to rotatory 90, send to transition displacement mechanism, transition displacement mechanism pulls open the interval of 3 brazing filler metal rings and makes its and chain station interval unanimous, so that detain the body. In this embodiment, get material manipulator and adopt servo drive's PPU manipulator, it is fast, the precision is high, long service life, durable not break down lastingly.

The engaging mechanism 65 includes a horizontally moving portion for inserting the projection of the cut brazing filler metal ring into the pipe body, and an engaging portion for engaging the stopper portion of the brazing filler metal ring with the pipe body. The horizontal movement portion is preferably a transfer cylinder 652 and a transfer body 651, and the transfer body 651 has a clamping portion at its tip end for gripping the solder ring and inserting the solder ring into the tube. The transfer main body 651 is provided with a fastening portion. The buckling part comprises buckling hand grips, the number of the buckling hand grips corresponds to the number and the positions of limiting parts on the brazing filler metal ring, the transferring main body 651 is connected with the buckling cylinder 653 through a connecting piece, and the transferring cylinder 652 drives the buckling cylinder 653 and the transferring main body 651 to move back and forth. The engagement cylinder 243 controls the engagement of the engagement fingers to engage the stopper with the edge of the tube 5. Wherein, the front end of straining tongs is equipped with the pressure head, and the contained angle between pressure head and the brazing filler metal circle 91 is preferred to be designed into 30 ~75, like this, will pull the limit through the pressure head and press the bending back, because the pressure head slope sets up, just can further straining the limit on the body, greatly reduced defective rate. Otherwise, the brazing filler metal ring can fall off from the pipe body, so that the pipe body needs to return to the previous process to continue to buckle the brazing filler metal ring, and the working efficiency can be greatly reduced.

In the embodiment, the guide groove is arranged, so that the path of the material belt can be guided, the stability of the material belt is ensured, and other mechanisms can be arranged on the guide groove, so that the whole structure is compact, and the occupied area is small; through setting up first lift fixture, cutting mechanism and extracting mechanism, can drive the material circle that extends from the guide way and remove, remove to the cutting mechanism side and cut, and the brazing filler metal circle of cutting is sent into the buckle mechanism by the extracting mechanism centre gripping, through continuous operation, accomplishes the removal in material area, cuts and the transport of brazing filler metal circle, realizes intelligent operation, simple structure, compactness, and work efficiency is high.

In this embodiment, the product inspection device 10 includes a bracket disposed on the output mechanism, and the bracket is provided with a color difference detection sensor for detecting whether the end of the pipe body is buckled or not; the rear of the detection part is provided with a rejection part. Through setting up colour difference detection sensor, whether can detect the tip of body and detain and be equipped with the brazing filler metal circle, if do not, show that the brazing filler metal circle has come off from the body, the product is unqualified, then rejects along the portion of rejecting. In the embodiment, the tube body and the brazing filler metal ring have color difference, if the tube body is made of stainless steel and the brazing filler metal ring is made of copper foil, the color of the brazing filler metal is different from that of the hollow tube, namely, the tube body is silvery white and the copper foil is yellow, so that the tube body is sleeved with the brazing filler metal ring through a color difference detection sensor as long as the color is different; if it is a colour all the time to detect, then explain that the one end of body is not overlapped and is established the brazing filler metal circle, produces the obscission in transportation process after brazing filler metal circle cover is established promptly, or brazing filler metal circle establishes the in-process at the cover again and does not overlap successfully. The pipe body which finishes material buckling is grabbed to the material receiving groove by a mechanical hand to discharge, and the pipe body which does not finish material buckling is conveyed to the lower end discharge hole by the conveying chain and falls off.

The working method of the edge wrenching machine comprises the following steps:

s101: feeding: the tube body is placed in the feeding device, is output by the feeding device and is transferred to the conveying device, and the tube body is clamped by the conveying device and conveyed forwards.

Specifically, a plurality of hollow tubes 7 are placed in a feeding bin 12, the tubes slide to the lifting plate side of a bottom laminate along a bottom plate 121 of the feeding bin, a lifting cylinder is started, the lifting cylinder drives all lifting plates 132 to act uniformly, the lifting plates 132 descend first, so that the tubes of the feeding bin 12 slide to the lifting plates 132 at the bottom, the tubes 7 randomly enter the lifting plates 132, then the lifting plates 132 ascend to one side of a fixing plate 131 at a second layer, so that the tubes enter the fixing plate 131 at the layer along the lifting plates, then slide to the lower side from the high side of the fixing plate 131, lean on the lifting plates 132 ascending at the layer at the moment, after the lifting plates 132 descend, the tubes 7 automatically fall onto the lifting plates 132, then the lifting plates 132 ascend to the fixing plate side at a third layer again, the circular conveying is performed, and in the upward conveying process of the tubes 7 at the upper part, the tubes 7 in the feeding bin at the bottom 12 are continuously conveyed upwards, and work at the same time, so that the work efficiency is greatly improved; the output pipe body is moved to the conveying platform 14 through the lifting plate at the top layer, the conveying platform automatically drives the pipe body to be conveyed forwards, and after the pipe body is conveyed to the final position, the pipe body is pushed by the material pushing cylinder 15, so that the pipe body slides downwards along the pipe body storage bin 16 to the side of the feeding manipulator 8 to stop. The tube is gripped by the feeding robot 8 and placed on the gripper 32 of the conveying device 3 for gripping and transportation.

S102: punching: and punching holes at the position of the pipe body close to the end part.

Specifically, a pipe body detection sensor is arranged on one side of the conveying device and used for detecting whether a pipe body is arranged on the conveying chain or not; when the pipe bodies are detected to be on the conveying chain, the conveying chain conveys the pipe bodies to the side of the punching device, the punching device punches holes on two sides of the pipe bodies, the positions of the holes are preferably 10mm away from the end portions of the pipe bodies, and the hole diameters are preferably 0.3mm. If the diameter of the hole is too large, the strength of the pipe body is reduced.

S103: primary edge wrenching: when the pipe body on the conveying device is detected, the conveying device conveys the pipe body to the pipe body edge turning device side, positions the pipe body and presses out the edge turning at 45-55 degrees.

Specifically, conveyor sends the body to first positioning die side, and the body is cliied the back by the holder, and its both ends extend, are fixed a position by first positioning die respectively, and every positioning die all is equipped with mould and bed die, and upper and lower mould is with body card internal fixation at its cavity after the compound die, and the both ends of body still extend from first positioning die, are pulled the limit to the tip of body by the first limit mould of pulling that is located the conveyor and the positioning die outside, pull limit angle preferred 50.

S104, secondary edge wrenching: the pipe body is positioned and a 90-degree pulling edge is pressed out, so that the pulling edge is finally perpendicular to the pipe body.

Specifically, conveyor sends the body to second positioning die side, is fixed a position by second positioning die body to pull the limit by the second and carry out the secondary by the limit mould to the tip of body, pull the limit angle and be 90, make the tip parallel and level of pulling limit and body.

S105: material buckling: the conveying device conveys the tube body after edge pulling to the side of the tube body material buckling device for positioning, the material belt is cut to form a material body, and the material body is buckled on the edge pulling side of the tube body.

Specifically, the material strip 9 is led out from the material tray and enters the channel 211 of the guide groove 21, the material strip extends along the channel and penetrates into one end of the closed notch 212 of the channel, and the other end of the closed notch penetrates out, and the positioning mechanism and the first lifting clamping mechanism are aligned and positioned. The first lifting clamping mechanism 22 drives the material belt to move downwards, when the material belt moves to a target position of the cutting mechanism 23, the positioning cylinder acts to insert into one of the solder rings of the material belt to fix the solder ring 251 to prevent the solder ring from shaking during cutting, then the cutting mechanism 23 cuts the material belt, three solder rings are cut off, when the material belt is cut, the material taking manipulator clamps the solder rings and rotates to the same direction as the pipe body, the material body is conveyed to the transition distance changing mechanism, the distance between the solder rings is consistent with the distance between adjacent pipe bodies through the transition distance changing mechanism, the protrusions 2511 of the three solder rings are simultaneously inserted into the three pipe bodies 5 through the buckling mechanism 24, the limiting part 2512 of each solder ring is buckled and buckled on the pull edge of the corresponding pipe body 5, and the solder rings at one end of the pipe bodies are fixed. Then have conveyor again and carry the body to next body knot material device side, detain the material operation to the other end of body, all detained the borer material circle of establishing until the both ends of body.

S106: and (3) detection: and outputting the tube body after material buckling, detecting material buckling in the output process, rejecting the tube body if the end part of the tube body is detected not to buckle the material body, and outputting the tube body if the end part of the tube body is detected to buckle the material body.

Specifically, material buckling detection is carried out in the output process of the pipe body, if the color difference detection sensor detects that the colors are inconsistent, the pipe body is qualified, and the pipe body is gripped to the material receiving groove by a manipulator for discharging; if the color difference detection sensor detects that the colors are consistent, the end part of the pipe body is not buckled with the brazing ring, and the pipe body is conveyed to the lower end discharge hole by the conveying device and falls off.

Claims

1. An edge wrenching machine is characterized by comprising a feeding device, a platform and a conveying device arranged on the platform; at least one side of the conveying device is provided with a pipe body edge wrenching device for wrenching the end part of the pipe body, a pipe body buckling device for buckling a brazing ring on the pipe body after edge wrenching and a finished product inspection device for detecting whether the brazing ring is buckled on the pipe body or not; the finished product inspection device comprises a bracket arranged on the output mechanism, and the bracket is provided with a color difference detection sensor for detecting whether the end part of the pipe body is buckled with a brazing ring or not; a rejecting part is arranged behind the color difference detection sensor;

the pipe body material buckling device comprises a material disc for winding a material belt, a guide groove for guiding the material belt on the material disc, a first lifting clamping mechanism for driving the material belt on the guide groove to move up and down, a cutting mechanism for cutting the material belt moving to a target position, a material taking mechanism for clamping a cut material body, and a buckling mechanism for buckling the material body on the side of the pipe body pulling side for fixing;

a material belt induction sensor is arranged between the material tray and the guide groove and used for detecting whether the material belt is fed or not and whether the material belt is pulled tightly or not, and the material belt passes through the lower part of the material belt induction sensor;

the material taking mechanism comprises a material taking manipulator, the material taking manipulator rotates the taken material body to the same direction as the pipe bodies and sends the material body to the transition pitch-changing mechanism, the material body comprises at least one brazing ring, and the distance between the brazing rings is consistent with the distance between the adjacent pipe bodies through the transition pitch-changing mechanism;

and a punching device is also arranged on the front side of the pipe body edge-wrenching device.

2. The edge wrenching machine as claimed in claim 1, wherein the conveying device comprises a conveying chain, and a plurality of grippers for gripping the tube body are arranged on the conveying chain at intervals; the gripper comprises at least one group of grippers which are arranged oppositely, the grippers are of a bending structure, the bending parts of the grippers are controlled to move through springs, and the tube body is gripped through the springs.

3. The edge wrenching machine as claimed in claim 1 or 2, wherein a loading manipulator is arranged between the loading device and the conveying device.

4. The edge wrenching machine as claimed in claim 1 or 2, wherein the tube body edge wrenching device comprises a positioning die and an edge wrenching die which are arranged at two sides of the conveying device; the positioning die is used for fixing the pipe body; the edge wrenching die is used for pressing the end part of the pipe body out of the edge wrenching.

5. A method of operating an edge wrenching machine as claimed in claim 1, comprising the steps of:

s3: primary edge wrenching: conveying the pipe body to the side of a pipe body edge-turning device, positioning the pipe body, and pressing out an edge turning at 45 to 55 degrees;

s5: material buckling: conveying the flanged pipe body to the pipe body buckling device side for positioning, cutting the material belt to form a material body, and buckling the material body on the flanged side of the pipe body;

s6: and (3) detection: and outputting the pipe body after material buckling, detecting the material buckling in the output process, rejecting the pipe body if the end part of the pipe body is detected to be not buckled with the material body, and outputting the pipe body if the end part of the pipe body is detected to be buckled with the material body.