Automatic shrinking and sealing machine for metal pipes

Abstract

The invention discloses an automatic shrinking and sealing machine for metal pipes, comprising: a workbench; an automatic pipe feeding hopper mechanism, a pipe shrinking mechanism, an automatic pipe cutting mechanism, an automatic pipe welding and sealing mechanism, and a material receiving box arranged on the workbench in sequence; an automatic pipe conveying mechanism, fixedly arranged above the workbench, for conveying metal pipes from the automatic pipe feeding hopper mechanism to the pipe shrinking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, and the material receiving box in sequence; a control system, comprising a PLC, which is respectively controlled and connected with the automatic pipe feeding hopper mechanism, the pipe shrinking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, the automatic pipe conveying mechanism, and the automatic pipe conveying mechanism. The invention can realize the automatic shrinking of metal pipes of different hardness, pipe length, and diameter, and then cut to length and weld them, and can realize the integrated production of three processes, which significantly improves the production efficiency and has a wide range of application prospects.

Description

Technical Field

[0001] The invention relates to the field of mechanical equipment, in particular to an automatic metal pipe shrinking and sealing machine, which is used for shrinking, cutting and welding and sealing metal pipes. Background Art

[0002] Heat pipes make full use of the rapid heat transfer properties of heat conduction and phase change media, have ultra-high thermal conductivity, and are widely used in military, electronics and other industries. The manufacture of heat pipes generally uses metal pipes as raw materials, usually copper pipes. During the production process, both ends need to be reduced in diameter and welded to ensure the internal vacuum. The reliability and stability of the shrinking area has a great impact on the subsequent welding process and plays an important role in the quality of the finished product of the heat pipe. At the same time, the shrinking welding accuracy has a certain impact on the length accuracy of the heat pipe. Generally, in the production process, the pipe diameter reduction, cutting to length and tail welding are carried out separately on different equipment. At present, the discharge, transmission process and positioning of the shrinking equipment are unstable, and the cutting to length still requires manual operation. Therefore, the product will move at different stations during the production process, wasting a lot of manpower, low work efficiency, poor reliability, and consistency is difficult to guarantee, and the degree of automation is low.

[0003] A Chinese patent (publication number CN207361303U) discloses a feeding device for small pipes one by one, including a hopper with an inclined plate, a fixed plate, a feeding rod, etc. The hopper of the device is not easy to adjust, and during the feeding process of small pipes, it is easy to cause the number of pipes fed at a time to be greater than one, and the feeding is unstable. Summary of the invention

[0004] The object of the present invention is to provide an automatic pipe shrinking and sealing machine with high efficiency, stable shrinking quality, good sealing quality and adaptability to pipes of different diameters and lengths in order to solve one of the above problems.

[0005] The purpose of the present invention is achieved by at least one of the following technical solutions:

[0006] An automatic shrinking and sealing machine for metal pipes, comprising:

[0007] Workbench;

[0008] An automatic pipe feeding hopper mechanism, a pipe shrinking mechanism, an automatic pipe cutting mechanism, an automatic pipe welding and sealing mechanism, and a material receiving box are sequentially arranged on the workbench along a certain direction;

[0009] The automatic pipe conveying mechanism is fixedly arranged on the workbench and is used to convey the metal pipe from the automatic pipe feeding hopper mechanism to the pipe shrinking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, and the receiving box in sequence, so as to realize the movement of the metal pipe between different workstations;

[0010] The control system includes a PLC, which is respectively connected to the automatic pipe feeding hopper mechanism, the pipe shrinking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, the automatic pipe conveying mechanism and the automatic pipe conveying mechanism to control the coordinated actions of each mechanism.

[0011] Further preferably, the automatic pipe feeding hopper mechanism comprises:

[0012] hopper;

[0013] A hopper inclined plate, obliquely arranged in the hopper;

[0014] A hopper middle plate is movably disposed in the hopper through a movable connecting block and is located above the hopper inclined plate;

[0015] A hopper front plate, arranged at the front side of the hopper and having a gap with the lowest end of the hopper inclined plate;

[0016] A material lowering block is arranged at an upper end of the front plate of the hopper at a certain angle;

[0017] A feeding cylinder, fixedly arranged at the bottom of the hopper;

[0018] The feeding plate has a V-shaped groove on the top that can only store one metal pipe, and is driven by the feeding cylinder to move up and down along the gap. The V-shaped groove of this scheme can only store one metal pipe, which is conducive to pipe feeding.

[0019] Further preferably, the tube necking mechanism comprises:

[0020] A diameter reducing main machine, fixedly arranged on the workbench, is used for performing diameter reducing processing on metal pipes;

[0021] A diameter reduction propulsion mechanism, fixed to the workbench relative to the diameter reduction main machine, is used to apply axial thrust to the metal pipe during diameter reduction;

[0022] The reducing clamping cylinder is arranged on the reducing propulsion mechanism and is located between the screw module and the reducing main machine, and is used to apply clamping force to the metal pipe when reducing the diameter.

[0023] Further preferably, the reduced diameter host comprises:

[0024] Reduced diameter motor;

[0025] A reducing die housing, fixedly connected to the reducing motor housing;

[0026] A diameter reduction spindle, which is rotatably disposed in the diameter reduction head housing via a bearing and whose rear end is drivingly connected to the output shaft of the diameter reduction motor;

[0027] The diameter reduction die is detachably arranged at the front end of the diameter reduction spindle.

[0028] Further preferably, a cooling device is also disposed on the outer wall of the reducing die shell.

[0029] Further preferably, the diameter reduction propulsion mechanism comprises:

[0030] The screw module is fixed on the moving plate, and includes a screw and a moving nut threadedly matched with the screw. The moving plate is drivingly connected to the bottom forward-pushing cylinder and slidingly matched with the workbench through a linear guide rail.

[0031] A servo motor is drivingly connected to the end of the screw of the screw module;

[0032] The shrinking front push block is fixedly arranged on the moving nut and reciprocates with the moving nut.

[0033] Further preferably, the automatic pipe cutting mechanism comprises a cutting mechanism and a cutting and pushing mechanism.

[0034] The cutting mechanism comprises:

[0035] A vertically disposed cut-off mounting plate;

[0036] A cut-off cylinder is vertically fixed on the cut-off mounting plate;

[0037] A cutting tool is fixedly arranged at the lower end of the cutting cylinder;

[0038] A pre-cutting reference block is fixedly arranged on the cutting mounting plate to define a position of the metal pipe;

[0039] The pipe clamping and positioning mechanism comprises:

[0040] Cut off the forward push cylinder and fix it on the workbench;

[0041] A cutting clamping cylinder is movably arranged on the workbench through a linear sliding pair, and a slider portion of the linear sliding pair is drivingly connected to the cutting forward pushing cylinder;

[0042] A cutting clamping mounting block is mounted on the cutting clamping cylinder and is provided with a slide groove;

[0043] A cutting clamping block is slidably disposed in a slide groove of the cutting clamping mounting block and is drivingly connected to the cutting clamping cylinder;

[0044] The buffer spring has one end fixed on the cutting clamping block and the other end fixed on the cutting clamping mounting block, which ensures that the front end of the pipe is accurately positioned while ensuring that the pipe is not twisted or bent due to resistance.

[0045] Further preferably, the automatic pipe welding and sealing mechanism comprises:

[0046] A welding gun fixing block is fixedly arranged on the workbench through a three-axis adjustment slide;

[0047] A welding gun, fixedly arranged on the welding gun mounting base, used for welding and sealing the metal pipe;

[0048] The weldment positioning and rotating mechanism is fixedly arranged on the workbench relative to the welding gun mounting base, and is used to drive the metal pipe to move axially at the welding front to achieve positioning, and to rotate around its own axis during welding.

[0049] Further preferably, the weldment positioning and rotating mechanism comprises:

[0050] Linear slide mechanism, comprising:

[0051] A guide rail fixedly arranged on the workbench relative to the welding gun mounting base;

[0052] A first slider mechanism and a second slider mechanism are slidably arranged on the guide rail in an adjustable relative position;

[0053] Two welding rollers are rotatably arranged in parallel on two front support blocks of the first slider mechanism and are drivingly connected to the welding rotary motor via a pulley pair;

[0054] The welding rear support block is fixedly arranged on the second slider mechanism, and a V-shaped opening is arranged at the upper end, and rollers for supporting the metal pipe are arranged on the left and right sides of the V-shaped opening;

[0055] The weldment axis moving mechanism comprises:

[0056] A lifting cylinder is vertically fixed on the rear welding support block;

[0057] A micro motor is fixedly arranged on the top of the telescopic end of the lifting cylinder;

[0058] The rotating rubber wheel is fixedly arranged on the output shaft of the micro motor, and drives the metal pipe to move axially through friction force to achieve positioning.

[0059] The welding pressing mechanism is located above the two welding rollers and includes:

[0060] Welding down-pressure cylinder;

[0061] A welding pressing roller is arranged at the bottom of the telescopic end of the welding pressing cylinder through a connecting piece;

[0062] The welding front baffle is fixedly arranged on the side of the connecting piece facing the welding gun and is provided with welding holes.

[0063] Further preferably, the automatic pipe feeding hopper mechanism comprises:

[0064] A transverse transmission cylinder, horizontally fixed on the workbench, comprises a transverse fixed slide rail and a transverse moving block that are slidably matched;

[0065] Left and right conveying plates are horizontally fixed on the lateral moving blocks of the lateral conveying cylinder;

[0066] A plurality of vertical conveying cylinders are spaced apart on the left and right conveying plates along the length direction;

[0067] A plurality of clamping cylinders are respectively arranged at the bottom of the telescopic ends of the plurality of vertical conveying cylinders;

[0068] The left clamping block and the right clamping block with arc grooves are respectively connected to the clamping cylinders for clamping metal pipes;

[0069] The weldment bracket is transversely fixed on the support after welding, and a V-shaped groove for supporting the metal pipe is arranged at a position relative to the automatic pipe cutting mechanism and between the pipe shrinking mechanism and the automatic pipe cutting mechanism.

[0070] Compared with the prior art, the present invention has the following advantages:

[0071] 1) The present invention is an automatic pipe welding and sealing mechanism, which can realize the processes of automatic feeding, conveying, diameter reduction, cutting to length, welding, blanking and the like of metal pipes on one device; the whole process is carried out automatically, and the three processes of diameter reduction, cutting to length and sealing are completed at the same time, so efficient production can be achieved.

[0072] 2) The present invention only needs to move the hopper middle plate so that the distance between the hopper middle plate and the hopper vertical plate is slightly larger than the tube length, and the back of the hopper middle plate is locked with screws to realize the discharge and discharge of tubes of different lengths. When the feeding cylinder rises from the bottom to the top, the tube will automatically fall onto the V-groove of the discharge plate. When it rises to a certain height, the 45° inclined groove between the hopper front plate and the feeding plate can ensure that the excess tube falls, and the feeding stability is never guaranteed.

[0073] 3) The cutting positioning structure of the present invention adopts left and right clamping claw cylinders to clamp the pipe, and pushes it forward through the forward push cylinder. The pipe is positioned by the front end positioning block. The pipe is clamped on the clamping blocks on the left and right clamping claw cylinders. The clamping blocks and the clamping claw cylinders are engaged by means of a slot and are connected by a buffer spring, thereby ensuring that the front end of the pipe is positioned while ensuring that the pipe is not squeezed.

[0074] 4) The post-welding positioning device of the present invention adopts the welding front baffle as the front positioning reference, and drives the pipe to move forward by installing a rolling motor after welding the support block, and the rolling motor is installed on the lifting cylinder.

[0075] 5) The pipe reducing die of the present invention adopts a direct connection mode between the main shaft and the motor, and the motor is directly installed at the tail of the die, reducing the intermediate transmission links; water cooling plates are installed on the left and right sides of the die, and the internal flow channel of the die is designed, and external water supply is used to achieve circulating cooling of the die.

[0076] 6) The present invention provides an efficient pipe conveying device, which can realize the movement of pipes from positions among discharging, reducing diameter, cutting, welding and dropping, ensuring that the pipes can smoothly complete various production processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 It is a front view of the automatic diameter reducing and sealing machine for metal pipes according to an embodiment of the present invention.

[0078] Figure 2 It is a top view of the automatic diameter reducing and sealing machine for metal pipes according to an embodiment of the present invention.

[0079] Figure 3 It is a schematic front view of a reducing die head according to an embodiment of the present invention.

[0080] Figure 4 yes Figure 3 Schematic diagram of the BB cross-section.

[0081] Figure 5 It is an assembly diagram of the cutting mechanism of the automatic pipe cutting mechanism according to an embodiment of the present invention.

[0082] Figure 6 It is an assembly diagram of the cutting and pushing mechanism of the automatic pipe cutting mechanism according to an embodiment of the present invention.

[0083] Figure 7 It is an assembly diagram of the automatic pipe welding and sealing mechanism according to an embodiment of the present invention.

[0084] Figure 8 yes Figure 7 Enlarged schematic diagram at point C in the middle.

[0085] Fig. 9 It is a diagram of a hopper and a feeding mechanism according to an embodiment of the present invention.

[0086] Fig.10 1 is a diagram of a welding pressing mechanism according to an embodiment of the present invention.

[0087] Fig.11 Schematic diagram of a water cooling plate of a reducing die head according to an embodiment of the present invention.

[0088] The figure shows: workbench 1, material receiving box 2, linear slider mechanism 3, left clamping block 4, right clamping block 5, left and right conveying plates 6, vertical conveying cylinder 7, clamping cylinder 8, right head water cooling plate 9, left head water cooling plate 10, reducing clamping cylinder 11, shrinking front push block 12, screw module 13, servo motor 14, horizontal conveying cylinder 15, welding rotary motor 16, reducing motor 17, reducing head housing 18, reducing spindle 19, reducing die 20, cutting mounting plate 21, cutting cylinder 22, cutting tool 23, cutting Front reference block 24, cutting front push cylinder 25, cutting clamping block 26, buffer spring 27, cutting clamping mounting block 28, clamping cylinder 29, welding gun fixing block 30, welding roller 31, welding rear support block 32, rotating rubber wheel 33, micro motor 34, lifting cylinder 35, moving connecting block 36, hopper inclined plate 37, hopper middle plate 38, unloading block 39, hopper front plate 40, loading cylinder 41, loading plate 42, welding front baffle 43, welding downward pressure cylinder 44, welding downward pressure roller 45, weldment bracket 46. DETAILED DESCRIPTION

[0089] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0090] like Figure 1 and Figure 2 As shown, an automatic shrinking and sealing machine for metal pipes comprises:

[0091] Workbench 1;

[0092] An automatic pipe feeding hopper mechanism, a pipe shrinking mechanism, an automatic pipe cutting mechanism, an automatic pipe welding and sealing mechanism, and a material receiving box 2 are sequentially arranged on the workbench 1 along a certain direction;

[0093] The automatic pipe conveying mechanism is fixedly arranged on the workbench 1, and is used to convey the metal pipe from the automatic pipe feeding hopper mechanism to the pipe shrinking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, and the receiving box 2 in sequence, so as to realize the movement of the metal pipe between different workstations;

[0094] The control system includes a PLC, which is respectively connected to the automatic pipe feeding hopper mechanism, the pipe shrinking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, the automatic pipe conveying mechanism and the automatic pipe conveying mechanism to control the coordinated actions of each mechanism.

[0095] Specifically, if Figure 7 As shown, the automatic pipe feeding hopper mechanism comprises:

[0096] hopper;

[0097] A hopper inclined plate 37, obliquely arranged in the hopper;

[0098] A hopper middle plate 38 is movably disposed in the hopper and above the hopper inclined plate 37 by moving the connecting block 36;

[0099] A hopper front plate 40 is disposed at the front side of the hopper and has a gap with the lowest end of the hopper inclined plate 37;

[0100] The material lowering block 39 is disposed at the upper end of the hopper front plate 40 at an outward inclination of 45 degrees;

[0101] A feeding cylinder 41 is fixedly arranged at the bottom of the hopper;

[0102] The feeding plate 42 has a V-shaped groove on the top that can only store one metal pipe. It is driven by the feeding cylinder 41 to move up and down along the gap. When the feeding plate 42 rises to the point where it is separated from the hopper front plate 40, the excess pipe that appears during the feeding process will automatically fall off, ensuring stable feeding.

[0103] In this embodiment, metal pipes of different lengths can be placed by adjusting the hopper middle plate 38; the upward movement of the feeding cylinder 41 drives the feeding plate 42 to move upward, and the V-shaped groove on the feeding plate 42 can ensure that one pipe is in the V-shaped groove. When it moves to the unloading block 39, the excess metal pipe will fall onto the hopper inclined plate 37 or the unloading block 39 due to uneven force, so only one pipe is finally sent out. If the sensor at the hopper outlet fails to detect the pipe, the PLC controls the feeding cylinder to reciprocate up and down until a workpiece is detected.

[0104] like Figures 3 to 4 As shown, the pipe shrinking mechanism comprises:

[0105] A diameter reducing main machine, fixedly arranged on the workbench 1, is used for performing diameter reducing processing on metal pipes;

[0106] A diameter reduction propulsion mechanism, fixed on the workbench 1 relative to the diameter reduction main machine, is used to apply axial thrust to the metal pipe during diameter reduction;

[0107] The diameter reduction clamping cylinder 11 is arranged on the diameter reduction propulsion mechanism and is located between the screw module 13 and the diameter reduction main machine, and is used to apply a clamping force to the metal pipe during diameter reduction.

[0108] Wherein, the reduced diameter host comprises:

[0109] Reduction motor 17;

[0110] The reducing die housing 18 is fixedly connected to the reducing motor housing 17 by screws;

[0111] The reducing spindle 19 is rotatably arranged in the reducing head housing 18 through a bearing and the rear end is directly connected to the output shaft of the reducing motor 17 through a flat key. The direct connection method is used to reduce the transmission chain, increase the transmission efficiency, and improve the stability of the mechanism;

[0112] The diameter reduction die 20 is detachably arranged at the front end of the diameter reduction spindle 19 .

[0113] Specifically, the diameter reduction propulsion mechanism comprises:

[0114] The screw module 13 is fixed on the moving plate, and includes a screw and a moving nut threadedly matched with the screw. The moving plate is drivingly connected to the bottom forward-pushing cylinder and slidingly matched with the workbench 1 through a linear guide rail.

[0115] A servo motor 14 is drivingly connected to the end of the screw of the screw module 13;

[0116] The shrinking front push block 12 is fixedly arranged on the moving nut and reciprocates with the moving nut.

[0117] In addition, if Fig.11 As shown, the outer wall of the reduced diameter die housing is also provided with a cooling device, and a water cooling plate is installed on each side of the reduced diameter die housing 18, namely, the right die water cooling plate 9 and the left die water cooling plate 10. Fig.11 The water cooling plate is connected to a circulating water flow, which enters from the right head water cooling plate 9, flows through the entire right head water cooling plate 9, flows through the reducing head shell 18, enters the left head water cooling plate 10, flows through the left head water cooling plate 10, and flows into the reducing head shell 18 again, and then continues to flow out to form a water cooling circulation system, taking away the local heat caused by various frictions during the reducing process, and ensuring the normal reduction operation.

[0118] like Figure 5 and Figure 6 As shown, the automatic pipe cutting mechanism includes a cutting mechanism and a cutting and pushing mechanism.

[0119] The cutting mechanism comprises:

[0120] A vertically arranged cut-off mounting plate 21;

[0121] A cutting cylinder 22 is vertically fixed on the cutting mounting plate 21;

[0122] A cutting tool 23 is fixedly arranged at the lower end of the cutting cylinder 22;

[0123] A pre-cutting reference block 24 is fixedly arranged on the cutting mounting plate 21 to define the position of the metal pipe;

[0124] The pipe clamping and positioning mechanism comprises:

[0125] Cut off the forward push cylinder 25 and fix it on the workbench 1;

[0126] The cutting clamping cylinder 29 is movably arranged on the workbench 1 through a linear sliding pair, and the slider portion of the linear sliding pair is drivingly connected to the cutting forward pushing cylinder 25;

[0127] A cutting clamping mounting block 28 is mounted on the cutting clamping cylinder 29 and is provided with a slide groove;

[0128] A cutting clamping block 26 is slidably disposed in a slide groove of the cutting clamping mounting block 28 and is drivingly connected to the cutting clamping cylinder 29;

[0129] The buffer spring 27 has one end fixed on the cutting clamping block 26 and the other end fixed on the cutting clamping mounting block 28, which ensures that the front end of the pipe is accurately positioned while ensuring that the pipe is not twisted or bent due to resistance.

[0130] During operation, the cutting clamping cylinder 29 is closed to ensure that the metal pipe is clamped on the cutting clamping block 26, and the cutting front pushing cylinder 25 is pushed forward. After the front end of the metal pipe abuts against the cutting front reference block 24, the cutting front pushing cylinder 25 continues to push forward. At this time, the cutting clamping mounting block 28 continues to move forward, and the resistance exerted on the metal pipe is transmitted to the cutting clamping block 26. The cutting clamping block 26 slides in the slide groove of the cutting clamping mounting block 28, and the elastic force generated by the stretching of the buffer spring 27 by the cutting clamping mounting block 28 provides a forward pulling force to the cutting clamping block 26, thereby ensuring that the front end of the metal pipe is accurately positioned and that the pipe is not twisted or bent at the resistance position.

[0131] like Figure 7 and Figure 8 , Fig.10 The automatic pipe welding and sealing mechanism comprises:

[0132] A welding gun fixing block 30 is fixedly arranged on the workbench 1 through a three-axis adjustment slide;

[0133] A welding gun, fixedly mounted on the welding gun mounting base 30, for welding and sealing the metal pipe;

[0134] The weldment positioning and rotating mechanism is fixedly arranged on the workbench 1 relative to the welding gun mounting base 30, and is used to drive the metal pipe to move axially at the welding front to achieve positioning, and to rotate around its own axis during welding.

[0135] Specifically, the weldment positioning and rotating mechanism comprises:

[0136] The linear slider mechanism 3 comprises:

[0137] A guide rail, fixedly arranged on the workbench 1 relative to the welding gun mounting base 30;

[0138] A first slider mechanism and a second slider mechanism are slidably arranged on the guide rail in an adjustable relative position;

[0139] Two welding rollers 31 are rotatably arranged in parallel on two front support blocks of the first slider mechanism, and are drivingly connected to the welding rotary motor 16 through a pulley pair;

[0140] The welding rear support block 32 is fixedly arranged on the second slider mechanism, and a V-shaped opening is arranged at the upper end, and rollers for supporting the metal pipe are arranged on the left and right sides of the V-shaped opening;

[0141] The weldment axis moving mechanism comprises:

[0142] A lifting cylinder 35 is vertically fixed on the rear welding support block 32;

[0143] A micro motor 34 is fixedly arranged at the top of the telescopic end of the lifting cylinder 35;

[0144] The rotating rubber wheel 33 is fixedly arranged on the output shaft of the micro motor 34, and drives the metal pipe to move axially through friction force to achieve positioning.

[0145] The welding pressing mechanism is located above the two welding rollers 31 and includes:

[0146] Welding down-pressure cylinder 44;

[0147] The welding pressing roller 45 is arranged at the bottom of the telescopic end of the welding pressing cylinder 44 through a connecting piece;

[0148] The welding front baffle 43 is fixedly arranged on the side of the connecting member facing the welding gun and is provided with welding holes.

[0149] During operation, the metal pipe is located on the two welding rollers 31 of the two front support blocks and the rollers of the welding rear support block 32, the micro motor 34 rotates slowly, and the lifting cylinder 35 moves upward to force the rotating rubber wheel 33 to contact the metal pipe. The friction force generated drives the metal pipe to move forward (towards the welding gun). When the metal pipe moves to the front end and contacts the welding front baffle 43, the front end positioning is completed; then the lifting cylinder 35 moves downward, and the welding pressing cylinder 44 presses down to contact with the metal pipe in a rolling manner. At this time, the welding rotating motor 16 drives the welding roller 31 to rotate so that the metal pipe rotates for welding. When the welding pressing cylinder 44 presses down, the welding front baffle 43 drops synchronously, which makes the welding hole located between the metal pipe and the welding gun, which is convenient for welding and sealing.

[0150] like Figure 1 and Figure 2As shown, the automatic pipe feeding hopper mechanism comprises:

[0151] A transverse transport cylinder 15 is horizontally fixed above the workbench 1 and includes a transverse fixed slide rail and a transverse moving block that are slidably matched;

[0152] The left and right conveying plates 6 are horizontally fixed on the lateral moving block of the lateral conveying cylinder 15, and move synchronously with the lateral moving block along the lateral fixed slide rail;

[0153] Five vertical conveying cylinders 7 are fixed on the left and right conveying plates 6 at equal intervals of 150 mm along the length direction;

[0154] Five clamping cylinders 8 are respectively arranged vertically at the bottom of the telescopic ends of the plurality of vertical conveying cylinders 7;

[0155] The left clamping block 4 and the right clamping block 5 with arc grooves are respectively connected to the clamping cylinders 8 for clamping metal pipes. The left clamping block 4 and the right clamping block 5 are respectively provided with arc grooves. When the clamping cylinders 8 are closed, the left clamping block 4 and the right clamping block 5 form a circular hole of the same diameter as the metal pipe.

[0156] The weldment support 46 is transversely fixed on the rear support 32 after welding, and a V-shaped groove for supporting the metal pipe is provided at a position relative to the automatic pipe cutting mechanism and between the pipe shrinking mechanism and the automatic pipe cutting mechanism.

[0157] In the initial state, the lateral moving block of the lateral conveying cylinder 15 is located on the right side, close to the hopper, the vertical conveying cylinder 7 is in the reset state, and the clamping cylinder 8 is in the open state. When working, the vertical conveying cylinder 7 moves downward to make the left and right clamping blocks close to the metal pipe to be clamped, and at this time, the clamping cylinder 8 is closed so that the metal pipe is clamped by the left and right clamping blocks; then the vertical conveying cylinder 7 moves upward to drive the clamped pipe upward, and after it is in place, the lateral conveying cylinder 15 moves to the left to drive the metal pipe to move one station to the left; the vertical conveying cylinder 7 moves downward, and after it is in place, the clamping cylinder 8 opens, and the metal pipe reaches the next station; after the conveying is completed, the vertical conveying cylinder 7 moves upward, and the lateral conveying cylinder 8 moves to the right to return to the initial position, forming a cycle. This embodiment has a total of five clamping systems (left clamping block 4, right clamping block 5, vertical conveying cylinder 7, clamping cylinder 8), which transfer the metal pipe from the hopper position to the diameter reduction station, the diameter reduction station to the intermediate waiting station, the intermediate waiting station to the cutting station, the cutting station to the welding station, and the welding station to the receiving box from the right to the left, thereby completing the diameter reduction, cutting and welding sealing processing of the entire metal pipe on one device, streamlining manpower, and improving work efficiency, reliability, consistency and automation.

[0158] The PLC is respectively connected to the electromagnetic valves of the vertical transmission cylinder 7, the clamping cylinder 8, the diameter reduction clamping cylinder 11, the horizontal transmission cylinder 15, the cutting oil cylinder 22, the cutting forward push cylinder 25, the clamping cylinder 29, the lifting cylinder 35, the feeding cylinder 41, and the welding pressing cylinder 44 to control all the actions of each cylinder. The PLC is also connected to the intermediate relays of the welding rotating motor 3, the diameter reduction motor 17, and the welding rear rotating motor 34 to control the start and stop of the motor; the PLC is also connected to the servo motor to control the position of the servo motor. The entire industrial control can be input into the PLC by writing a control program, and the PLC is preferably a Mitsubishi FX3U-128MT PLC.

[0159] The invention can realize metal pipes with different hardness, pipe length and diameter, automatically shrink the pipes, cut them to a fixed length and then weld them, and can realize integrated production of three processes, significantly improve production efficiency and have broad application prospects.

[0160] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An automatic shrinking and sealing machine for metal pipes, characterized in that: include: Workbench (1); An automatic pipe feeding hopper mechanism, a pipe shrinking mechanism, an automatic pipe cutting mechanism, an automatic pipe welding and sealing mechanism, and a material receiving box (2) are sequentially arranged on the workbench (1) along a certain direction; The automatic pipe conveying mechanism is fixedly arranged on the workbench (1) and is used to sequentially convey the metal pipe from the automatic pipe feeding hopper mechanism to the pipe necking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, and the material receiving box (2), so as to realize the movement of the metal pipe between different workstations; The control system includes a PLC, which is respectively connected to the automatic pipe feeding hopper mechanism, the pipe shrinking mechanism, the automatic pipe cutting mechanism, the automatic pipe welding and sealing mechanism, the automatic pipe conveying mechanism and the automatic pipe conveying mechanism, and is used to control the coordinated actions of each mechanism; The automatic pipe cutting mechanism includes a cutting mechanism and a cutting and pushing mechanism. The cutting mechanism comprises: A vertically arranged cut-off mounting plate (21); A cutting oil cylinder (22) is vertically fixed on the cutting mounting plate (21); A cutting tool (23) is fixedly arranged at the lower end of the cutting cylinder (22); A pre-cutting reference block (24) is fixedly arranged on the cutting mounting plate (21) to define the position of the metal pipe; The cutting and pushing mechanism comprises: Cut off the forward push cylinder (25) and fix it on the workbench (1); A cutting clamping cylinder (29) is movably arranged on the workbench (1) via a linear sliding pair, and a slider portion of the linear sliding pair is drivingly connected to the cutting forward pushing cylinder (25); A cutting clamping mounting block (28) is mounted on the cutting clamping cylinder (29) and is provided with a slide groove; A cutting clamping block (26) is slidably disposed in a slide groove of the cutting clamping mounting block (28) and is drivingly connected to the cutting clamping cylinder (29); A buffer spring (27) has one end fixed on the cutting clamping block (26) and the other end fixed on the cutting clamping mounting block (28).

2. The automatic shrinking and sealing machine for metal pipes according to claim 1, characterized in that: The automatic pipe feeding hopper mechanism comprises: hopper; A hopper inclined plate (37) is obliquely arranged in the hopper; A hopper middle plate (38) is movably arranged in the hopper through a movable connecting block (36) and is located above the hopper inclined plate (37); A hopper front plate (40) is arranged at the front side of the hopper and has a gap with the lowest end of the hopper inclined plate (37); A material lowering block (39) is disposed at an upper end of the hopper front plate (40) at a certain angle outwardly; A feeding cylinder (41) is fixedly arranged at the bottom of the hopper; The feeding plate (42) is provided with a V-shaped groove on the top for storing only one metal pipe, and is driven by the feeding cylinder (41) to move up and down along the gap.

3. The automatic shrinking and sealing machine for metal pipes according to claim 1, characterized in that: The pipe necking mechanism comprises: A diameter reducing main machine, fixedly arranged on the workbench (1), and used for performing diameter reducing processing on metal pipes; A diameter reduction propulsion mechanism, fixed on the workbench (1) relative to the diameter reduction main machine, and used to apply axial thrust to the metal pipe during diameter reduction; The diameter reduction clamping cylinder (11) is arranged on the diameter reduction propulsion mechanism and is located between the screw rod module (13) and the diameter reduction main machine, and is used to apply a clamping force to the metal pipe during diameter reduction.

4. The automatic shrinking and sealing machine for metal pipes according to claim 3, characterized in that: The reduced diameter host comprises: Reduction motor (17); A reducing die housing (18) fixedly connected to the outer shell of the reducing motor (17); A diameter reducing spindle (19) is rotatably disposed in the diameter reducing head housing (18) via a bearing and the rear end of the spindle is drivingly connected to the output shaft of the diameter reducing motor (17); The diameter reduction die (20) is detachably arranged at the front end of the diameter reduction spindle (19).

5. The automatic shrinking and sealing machine for metal pipes according to claim 4, characterized in that: The outer wall of the reducing die shell is also provided with a cooling device.

6. The automatic shrinking and sealing machine for metal pipes according to claim 3, characterized in that: The diameter reduction propulsion mechanism comprises: A screw module (13) is fixed on a movable plate, comprising a screw and a movable nut threadedly matched with the screw, wherein the movable plate is drivingly connected to a bottom forward-pushing cylinder and is slidingly matched with the workbench (1) via a linear guide rail; A servo motor (14) drivingly connected to the end of the screw of the screw module (13); The shrinking forward push block (12) is fixedly arranged on the moving nut and reciprocates with the moving nut.

7. The automatic shrinking and sealing machine for metal pipes according to claim 1, characterized in that: The automatic pipe welding and sealing mechanism comprises: A welding gun mounting base (30) is fixedly arranged on the workbench (1) via a three-coordinate axis adjustment slide; A welding gun, fixedly mounted on the welding gun mounting base (30), used for welding and sealing the metal pipe; The weldment positioning and rotating mechanism is fixedly arranged on the workbench (1) relative to the welding gun mounting base (30), and is used to drive the metal pipe to move axially at the welding front to achieve positioning, and to rotate around its own axis during welding.

8. The automatic shrinking and sealing machine for metal pipes according to claim 7, characterized in that: The weldment positioning and rotating mechanism comprises: The linear slider mechanism (3) comprises: A guide rail fixedly arranged on the workbench (1) relative to the welding gun mounting base (30); A first slider mechanism and a second slider mechanism are slidably arranged on the guide rail in an adjustable relative position; Two welding rollers (31) are rotatably arranged in parallel on two front support blocks located on the first slider mechanism, and are drivingly connected to a welding rotary motor (16) via a pulley pair; A rear welding support block (32) is fixedly arranged on the second slider mechanism, and has a V-shaped opening at the upper end, and rollers for supporting the metal pipe are arranged on the left and right sides of the V-shaped opening; The weldment axis moving mechanism comprises: A lifting cylinder (35) is vertically fixed on the rear welding support block (32); A micro motor (34) is fixedly arranged on the top of the telescopic end of the lifting cylinder (35); A rotating rubber wheel (33) is fixedly arranged on the output shaft of the micro motor (34) and drives the metal pipe to move axially through friction force to achieve positioning; The welding pressing mechanism is located above the two welding rollers (31) and comprises: Welding down-pressure cylinder (44); A welding pressing roller (45) is arranged at the bottom of the telescopic end of the welding pressing cylinder (44) through a connecting piece; A welding front baffle (43) is fixedly arranged on a side of the connecting piece facing the welding gun and is provided with welding holes.

9. The automatic shrinking and sealing machine for metal pipes according to claim 8, characterized in that: The automatic pipe feeding hopper mechanism comprises: A transverse transport cylinder (15) is horizontally fixed above the workbench (1), and comprises a transverse fixed slide rail and a transverse moving block that are slidably matched; Left and right conveying plates (6) are horizontally fixed on the lateral moving blocks of the lateral conveying cylinder (15); A plurality of vertical conveying cylinders (7) are spaced apart along the length direction on the left and right conveying plates (6); A plurality of clamping cylinders (8) are respectively arranged at the bottom of the telescopic ends of the plurality of vertical conveying cylinders (7); The left clamping block (4) and the right clamping block (5) with arc grooves are respectively connected to the clamping cylinders (8) for clamping metal pipes; The weldment support (46) is transversely fixed on the post-welding support block (32), and is provided with a V-shaped groove for supporting the metal pipe at a position relative to the automatic pipe cutting mechanism and between the pipe necking mechanism and the automatic pipe cutting mechanism.

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