Double-head tube end forming machine

Abstract

The present application discloses a double-head tube end forming machine, comprising a machine body with a workbench, on which a first tube end forming mechanism and a second tube end forming mechanism are arranged relatively to each other, the first tube end forming mechanism and the second tube end forming mechanism both comprise a jig for supporting and pressing the tube fittings and a tube end forming assembly for processing the tube fittings on the jig, one end of the tube fitting is arranged on the jig of the first tube end forming mechanism, and the other end is arranged on the jig of the second tube end forming mechanism, a feeding mechanism is arranged between the first tube end forming mechanism and the second tube end forming mechanism, the first tube end forming mechanism and the second tube end forming mechanism can be respectively close to or far away from the feeding mechanism, the present application can realize double-station forming processing of both ends of the tube fittings, thereby greatly improving work efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of pipe processing, and in particular to a double-head pipe end forming machine. Background Art

[0002] During the processing and assembly of automobile seats, the connectors are first assembled on the pipes and then the two ends of the pipes are formed. In the prior art, the pipe ends are processed on the forming equipment after manual assembly, and only a single station can be formed at a time during the pipe end forming process. Due to the high risk and randomness of manual operation, product consistency and mass production are relatively poor, which seriously affects the quality and cost of the products and is not conducive to improving production efficiency. Summary of the invention

[0003] The technical problem to be solved by the present application is to provide a double-headed pipe end forming machine, which can realize double-station forming processing on both ends of the pipe fitting, greatly improving work efficiency.

[0004] In order to solve the above-mentioned technical problems, the present application provides a double-head tube end forming machine, including a body with a workbench, on which a first tube end forming mechanism and a second tube end forming mechanism are relatively arranged, the first tube end forming mechanism and the second tube end forming mechanism both include a jig for supporting and pressing the tube fittings and a tube end forming assembly for processing the tube fittings on the jig, one end of the tube fitting is arranged on the jig of the first tube end forming mechanism, and the other end is arranged on the jig of the second tube end forming mechanism, a feeding mechanism is provided between the first tube end forming mechanism and the second tube end forming mechanism, and the first tube end forming mechanism and the second tube end forming mechanism can be close to or away from the feeding mechanism respectively.

[0005] Preferably, the unloading mechanism includes a unloading rack and a pushing piece arranged on the unloading rack, the pushing piece is driven by a driving cylinder to push the pipe fitting on the fixture down, and the pushing piece has a wedge surface for pushing and a blocking surface arranged behind the wedge surface for blocking the material.

[0006] Preferably, the tube end forming assembly comprises a frame and a movable table arranged on the frame, the jig is arranged on the movable table, a forming assembly is arranged on one side of the movable table, the jig comprises a lower clamping block and an upper clamping block, the lower clamping block is used to place the pipe to be processed, and has a concave arc groove adapted to the outer wall of the pipe, the upper clamping block is arranged on a lifting mechanism, and is driven above the lower clamping block to approach and press the pipe on the lower clamping block and move away from and relax the pipe on the lower clamping block, and the upper clamping block has The outer wall of the pipe fitting is adapted to an upper convex arc groove, and the lower clamping block is arranged on a base. The base is provided with a blanking plate for receiving the pipe fitting pushed down by the blanking mechanism, and the blanking plate is inclined from one end close to the jig to the end away from the jig, and a blocking portion is also provided at the end away from the jig. A blanking plate is provided on the side of the lower clamping block away from the driving cylinder of the blanking mechanism. The forming assembly is used to process the pipe fitting on the lower clamping block, and it includes a position switching mechanism, and the position switching mechanism is used to adjust the forming position of the pipe fitting.

[0007] Preferably, the lifting end of the lifting mechanism is connected to the upper clamping block through a connecting block to drive the upper clamping block to move up and down. A pressure rod is also provided between the connecting block and the upper clamping block. The upper clamping block has a mounting hole for installing the pressure rod, and the connecting block has a mounting groove for installing the pressure rod. A pressure ring is sleeved on the pressure rod. The aperture of the mounting hole is smaller than the aperture of the mounting groove to limit the pressure ring in the mounting groove. A compression spring is sleeved on the pressure rod, and the upper end of the compression spring acts on the bottom of the mounting groove, and the lower end of the compression spring acts on the upper end surface of the pressure ring. The lower end of the pressure rod extends from the upper convex arc groove.

[0008] Preferably, the position switching mechanism includes a movable block, an adjustment block, a forming assembly and a jig for placing pipe fittings, the forming assembly includes a core rod, the core rod has a shoulder, one end of the core rod is arranged with the movable block, and the other end of the core rod can extend into the inner cavity of the pipe fitting and abut against the end face of the pipe fitting through the shoulder, the movable block is driven by a first driving mechanism and can move back and forth along the length direction of the pipe fitting, the movable block has a yielding portion, and the adjustment block has a plurality of step surfaces that can abut against the yielding portion to limit the moving distance of the core rod.

[0009] Preferably, it further includes a mounting assembly, wherein the mounting assembly is provided with a first mounting block and a second mounting block in sequence along the moving direction of the movable block, and the two are detachably fixedly connected, the first mounting block and the second mounting block respectively have a clearance hole for the movable block and the adjustment block to move, the adjustment block is driven by a second driving mechanism to replace the step surface that abuts against the clearance portion, the second driving mechanism is arranged on the mounting assembly through a mounting plate, and the driving end of the second driving mechanism is connected to the adjustment block.

[0010] Preferably, the molding assembly also includes a sleeve, which is sleeved on the core rod and whose end is connected to the second mounting block. The core rod is provided with a connecting head, a first shaft segment and a second shaft segment in sequence along the progressively movable block. The outer diameter of the second shaft segment is smaller than the outer diameter of the first shaft segment. The inner cavity of the sleeve is adapted to the outer diameter of the first shaft segment, and the distance between the inner surface of the inner cavity of the sleeve and the outer surface of the second shaft segment is adapted to the wall thickness of the pipe.

[0011] Preferably, a toothed plate support block is provided on the side of the second mounting block facing away from the first mounting block, a plurality of positioning pins are provided on the second mounting block for connecting the toothed plate support block, the toothed plate support block has a clearance hole for the core rod to pass through, and two third driving mechanisms are also provided on the second mounting block, the driving end of the third driving mechanism drives the toothed plate support block to reciprocate along the direction of movement of the movable block.

[0012] Preferably, the workbench is also provided with a connecting rod driving assembly for driving the pipe end forming assembly to move along the length direction of the pipe fitting, the pipe end forming assembly includes a frame, the connecting rod driving assembly includes a first driving cylinder, a connecting rod assembly driven by the first driving cylinder, a bracket for mounting the connecting rod assembly, and an adjustment rod with one end connected to the frame and the other end connected to the connecting rod assembly for rotation around a first rotating shaft, the end of the first driving cylinder away from the driving end is connected to a base for rotation around a second rotating shaft, the connecting rod assembly includes a first connecting rod and a second connecting rod, the first connecting rod includes an integral connecting rod A first rod segment and a second rod segment are connected and have an included angle α, and the two intersect at point O. The first rod segment is rotatably connected to the driving end of the first driving cylinder around a third rotating shaft, the second rod segment is rotatably connected to the bracket around a fourth rotating shaft, one end of the second connecting rod is rotatably connected to the first connecting rod at point O around a fifth rotating shaft, and the other end of the second connecting rod is rotatably connected to the adjusting rod through the first rotating shaft, and the first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft are all perpendicular to the moving direction of the frame, and the first rotating shaft, the fourth rotating shaft and the fifth rotating shaft are all located in the same plane.

[0013] Preferably, the frame includes a first connecting plate and a second connecting plate which are separately arranged, and the first connecting plate and the second connecting plate are detachably fixedly connected via a U-shaped rod, and the adjusting rod includes a threaded rod connecting portion with a thread and a limiting portion with a plane, and the limiting portion has a connecting hole for the first rotating shaft to pass through, and the threaded rod connecting portion is threadedly connected to the bottom of the groove of the U-shaped rod, and the bottom of the groove of the U-shaped rod also has a clearance hole, and a nut adapted to the threaded rod connecting portion is arranged in the clearance hole, and the nut is limited in the clearance hole, and the U-shaped rod also has a limiting plate protruding from the main body and used to abut against the plane of the limiting portion to prevent the adjusting rod from rotating.

[0014] The beneficial effects of this application are:

[0015] The double-headed tube end forming machine of the present application can realize simultaneous processing of both ends of the tube by setting a first tube end forming mechanism and a second tube end forming mechanism, thereby avoiding the conversion of equipment and effectively improving work efficiency;

[0016] The double-head tube end forming machine of the present application can conveniently adjust the distance between the shaft shoulder of the mandrel and the forming end face by setting a movable block and an adjustment block, thereby realizing rapid switching between the forming of the inner ring mounting part and the outer ring mounting part of the tube, thereby greatly improving the convenience of using the equipment;

[0017] By setting a connecting rod drive assembly, the present application can utilize the dead point structure to achieve safe and stable operation of the equipment, so that when the first drive cylinder is not working, the frame cannot move, thereby effectively avoiding the movement of the frame during the molding process, thereby effectively avoiding the problem of molding position deviation when the mounting part is molded;

[0018] The present application adopts the free setting of the two ends of the mandrel, and the position of the mandrel is moved by gradually approaching the first driving mechanism, which is easy to use and install;

[0019] The present application realizes the switching of the forming position by setting a step surface on the adjustment block, and the structure is simple and compact, which can not only reduce the weight of the entire equipment but also achieve the purpose of rapid switching;

[0020] The present application realizes a compact and beautiful overall structure by providing a mounting assembly with an inner cavity to carry the movable block and the adjustment block.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of this application;

[0023] Figure 2 is an internal schematic diagram of this application;

[0024] Figure 3 is a schematic diagram of some components of the present application;

[0025] Figure 4 This application Figure 3 Hide the schematic diagram of the second connecting plate;

[0026] Figure 5 is a schematic diagram of a molding assembly portion of the present application;

[0027] Figure 6 This application Figure 5 A partial cross-sectional view of

[0028] Figure 7 is a schematic diagram of a connecting rod drive assembly portion of the present application;

[0029] Figure 8 It is a schematic diagram of the feeding mechanism part of the present application;

[0030] Fig. 9 It is a schematic diagram of the pressure rod part of the present application;

[0031] Fig.10 It is a schematic diagram of the lifting mechanism part of the present application;

[0032] Fig.11 is a schematic diagram of a first tube end forming mechanism of the present application;

[0033] Fig.12 This application Fig.11 A partial schematic diagram of part A;

[0034] Fig.13 is a schematic diagram of a molding assembly of the present application;

[0035] Fig.14 It is a schematic diagram of the mandrel of the present application.

[0036] in:

[0037] 2 is a box body, 4 is an electric control box, 6 is a workbench, 8 is a control switch key, 10 is a touch screen, 12 is a first tube end forming mechanism, 14 is a second tube end forming mechanism, 16 is a material unloading mechanism, 1601 is a material unloading rack, 1602 is a material pushing member, 1603 is a wedge surface, 1604 is a material blocking surface, 18 is a lifting mechanism, 1801 is a pressure rod, 1802 is a pressure ring, 1803 is a vertical plate, 20 is a fuel injector drive cylinder, 2 2 is the tube end forming assembly, 23 is the first slide rail, 24 is the fixture, 2401 is the lower clamping block, 2402 is the upper clamping block, 26 is the first slider, 28 is the base, 30 is the blanking plate, 32 is the moving table, 33 is the forming assembly, 34 is the mandrel, 3401 is the connector, 3402 is the first shaft section, 3403 is the second shaft section, 3404 is the second shaft section, 35 is the sleeve, 36 is the second mounting block, 38 is the tooth plate The supporting block, 40 is a step surface, 42 is a movable block, 44 is a yielding portion, 46 is a first mounting block, 48 is a first driving mechanism, 50 is a receiving block, 52 is a connecting plate, 54 is a fourth driving mechanism, 56 is a second driving mechanism, 58 is an adjustment block, 60 is a third driving mechanism, 62 is a bracket, 64 is a base, 66 is a U-shaped rod, 68 is a second rotating shaft, 70 is a limiting plate, 72 is a first driving cylinder, 74 is a first Three rotating shafts, 76 is the first connecting rod, 7601 is the first rod segment, 7602 is the second rod segment, 78 is the adjusting rod, 80 is the nut, 82 is the first rotating shaft, 84 is the second connecting rod, 86 is the fifth rotating shaft, 87 is the fourth rotating shaft, 88 is the position sensor, 90 is the induction plate, 92 is the frame, 9201 is the first connecting plate, 9202 is the second connecting plate, 94 is the calibration block, 96 is the clamping protrusion, and 98 is the formed step surface. DETAILED DESCRIPTION

[0038] The present application is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present application and implement it, but the embodiments are not intended to limit the present application.

[0039] See attached Figures 1 to 14 , a double-head tube end forming machine according to a preferred embodiment of the present invention, wherein Figure 1 It is a schematic diagram of the overall structure of this application. Figure 2 In order to more intuitively display the internal structure, the box 2 is hidden. Figure 3It is mainly set up to reflect the details of the tube end forming mechanism. The double-head tube end forming machine of the present application can realize the inner mounting part and the outer mounting part of the two ends of the tube to realize the installation of the tooth plate. It includes a machine body with a workbench 6, the machine body includes a box body 2, and an electric control box 4 for controlling the entire double-head tube end forming machine arranged on one side of the box body 2. A plurality of control switch keys 8 and a touch screen 10 are also arranged on the box body 2. A first tube end forming mechanism 12 and a second tube end forming mechanism 14 are arranged on the workbench 6. The first tube end forming mechanism 12 The first tube end forming mechanism 12 and the second tube end forming mechanism 14 both include a jig 24 for supporting and compressing the tube and a tube end forming assembly 22 for processing the tube on the jig 24. One end of the tube is arranged on the jig 24 of the first tube end forming mechanism 12, and the other end is arranged on the jig 24 of the second tube end forming mechanism 14. A feeding mechanism 16 is provided between the first tube end forming mechanism 12 and the second tube end forming mechanism 14. The first tube end forming mechanism 12 and the second tube end forming mechanism 14 can be respectively close to or away from the feeding mechanism 16 to adjust the distance between them.

[0040] The unloading mechanism 16 includes a unloading rack 1601 and a pushing piece 1602 arranged on the unloading rack 1601. The pushing piece 1602 is driven by a driving cylinder to push the pipe fitting on the fixture 24 down. The pushing piece 1602 has a wedge-shaped surface 1603 for pushing and a blocking surface 1604 arranged behind the wedge-shaped surface 1603 for blocking the material. The bottom of the wedge-shaped surface 1603 is roughly flush with the key and then gradually rises to gradually lift the pipe fitting. The blocking surface 1604 is arranged at the end of the wedge-shaped surface 1603 to prevent the pushed out pipe fitting from falling off the wedge-shaped surface 1603.

[0041] The tube end forming assembly 22 includes a frame 92 and a movable table 32 arranged on the frame 92, the jig 24 is arranged on the movable table 32, and a forming assembly is arranged on one side of the movable table 32, the jig 24 includes a lower clamping block 2401 and an upper clamping block 2402, the lower clamping block 2401 is used to place the pipe to be processed, and has a concave arc groove adapted to the outer wall of the pipe, the upper clamping block 2402 is arranged on a lifting mechanism 18, and is driven above the lower clamping block 2401 to approach and press the pipe on the lower clamping block 2401 and to move away from and relax the pipe on the lower clamping block 2401, and the upper clamping block 2402 402 has an upper convex arc groove adapted to the outer wall of the pipe fitting, the lower clamping block 2401 is arranged on a base 28, and the base 28 is provided with a blanking plate 30 for receiving the pipe fitting pushed down by the blanking mechanism 16, the blanking plate 30 is inclined from one end close to the jig 24 to the end away from the jig 24, and a blocking portion is also provided at the end away from the jig 24. The lower clamping block 2401 is provided with a blanking plate 30 on the side of the driving cylinder of the blanking mechanism 16, and the molding assembly is used to process the pipe fitting on the lower clamping block 2401, which includes a position switching mechanism, and the position switching mechanism is used to adjust the molding position of the pipe fitting. Specifically, it also includes a calibration block, and the unloading rack 1601 is provided with a slide rail, and the calibration block has a slide groove adapted to the slide rail, and the two ends of the calibration block are respectively used to support the corresponding fixture 24 to adjust the distance between the two fixtures 24. That is, different calibration blocks are used to adjust the distance between the first tube end forming mechanism 12 and the second tube end forming mechanism 14 according to different product molding needs. Specifically, the upper clamping block 2402 and the lower clamping block 2401 are both provided with a clamping protrusion 96 on the side close to the core rod 34, and the clamping protrusion 96 has a molding step surface 98 extending outward. The outer diameter formed by the molding step surface 98 is larger than the outer diameter surrounded by the upper convex arc groove and the lower concave arc groove on the clamping block, so as to achieve the ability to accommodate the formed pipe fittings.

[0042] The lifting end of the lifting mechanism 18 is connected to the upper clamping block 2402 through a connecting block to drive the upper clamping block 2402 to move up and down. In order to prevent the pipe fitting from detaching from the fixture 24 when calibrating the size, it is preferred that the upper clamping block 2402 only lightly presses the pipe fitting surface on the lower clamping block 2401 during calibration. In order to be able to press the pipe fitting tightly when processing the pipe fitting, it is preferred that a pressure rod 1801 is further provided between the connecting block and the upper clamping block 2402, and the upper clamping block 2402 has a mounting hole for mounting the pressure rod 1801. The connecting block has an installation groove for installing a pressure rod 1801, and a pressure ring 1802 is sleeved on the pressure rod 1801. The aperture of the installation hole is smaller than the aperture of the installation groove so as to limit the pressure ring 1802 in the installation groove. A compression spring is sleeved on the pressure rod 1801, and the upper end of the compression spring acts on the bottom of the installation groove, and the lower end of the compression spring acts on the upper end surface of the pressure ring 1802. The lower end of the pressure rod 1801 extends from the upper convex arc groove. This structure can also prevent the material from being stuck on the jig 24 due to expansion during the molding process and is not easy to remove.

[0043] Since different pipe fittings require multiple mounting parts to be processed at each end, the position switching mechanism includes a movable block 42, an adjustment block 58 and a molding assembly 33 - the above-mentioned fixture 24 for placing pipe fittings, the molding assembly 33 includes a core rod 34 and a sleeve 35 sleeved on the core rod 34, the sleeve 35 has an annular mounting portion, and is detachably fixedly connected to the second mounting block 36 through the annular mounting portion, the core rod is provided with a connector 3401, a first shaft segment 3402 and a second shaft segment 3403 in sequence along the movable block, the outer diameter of the second shaft segment is smaller than the outer diameter of the first shaft segment to form a shaft shoulder 3404 therebetween, the inner cavity of the sleeve is adapted to the outer diameter of the first shaft segment, and the inner surface of the inner cavity of the sleeve is aligned with the outer diameter of the second shaft segment. The distance between the outer surfaces is adapted to the wall thickness of the pipe, the connecting head of the core rod is arranged with the movable block, and its second shaft section can extend into the inner cavity of the pipe and abut against the end face of the pipe through the shaft shoulder. The movable block 42 is driven by a first driving mechanism 48 and can move back and forth along the length direction of the pipe. When it moves toward the pipe, it will gradually abut against the connecting head and drive the core rod to move toward the pipe in the sleeve until the shaft shoulder abuts against the end face of the pipe. The movable block 42 has a yield portion 44, which is a rectangular yield hole. The adjustment block 58 has a plurality of step surfaces that can abut against the yield portion to limit the moving distance of the core rod. In this embodiment, two mounting portions are required for installing the tooth plate, so two step surfaces 40 are preferably used, and the yield portion 44 is a rectangle.

[0044] Specifically, the present application also includes an installation component, which is provided with a first installation block 46 and a second installation block 36 in sequence along the moving direction of the movable block 42, and the two are detachably fixedly connected. The first installation block 46 and the second installation block 36 respectively have a clearance hole for the movable block 42 and the adjustment block 58 to move. The adjustment block 58 is driven by a second driving mechanism 56 to replace the step surface that abuts against the clearance portion 44. The second driving mechanism 56 is arranged on the installation component through a mounting plate, and the driving end of the second driving mechanism 56 is connected to the adjustment block 58.

[0045] A toothed plate support block 38 is provided on the side of the second mounting block 36 facing away from the first mounting block 46. A plurality of positioning pins are provided on the second mounting block 36 for connecting the toothed plate support block 38. The toothed plate support block 38 has a clearance hole for the core rod 34 to pass through. Two third driving mechanisms 60 are also provided on the second mounting block 36. The driving end of the third driving mechanism 60 drives the toothed plate support block 38 to reciprocate along the moving direction of the movable block 42.

[0046] The mounting assembly is arranged on a first slider 26, the bottom of the first slider 26 is adapted to a first slide rail 23, the end of the first mounting block 46 facing away from the second mounting block 36 is connected to a fourth driving mechanism 54, the fourth driving mechanism 54 drives the mounting assembly to move, and an accommodating block 50 is arranged between the first mounting block and the driving end of the fourth driving mechanism 54, the first driving mechanism 48 is arranged in the inner cavity of the accommodating block 50, and the driving end of the fourth driving mechanism 54 is connected to the accommodating block 50.

[0047] The workbench 6 is also provided with a connecting rod driving assembly for driving the pipe end forming assembly 22 to move along the length direction of the pipe fitting, the connecting rod driving assembly includes a first driving cylinder 72, a connecting rod assembly driven by the first driving cylinder 72, a bracket 62 for mounting the connecting rod assembly, and an adjusting rod 78 connected to the frame 92 at one end and rotatably connected to the connecting rod assembly around a first rotating shaft 82 at the other end. The end of the first driving cylinder 72 away from the driving end is rotatably connected to a base 64 around a second rotating shaft 68. The connecting rod assembly includes a first connecting rod 76 and a second connecting rod 84. The first connecting rod 76 includes a first rod segment 7601 and a second rod segment 7602 that are integrally connected and have an angle α, and the two intersect at point O. The first rod segment 7601 and the driving cylinder 72 of the first driving cylinder 72 are connected to each other at a first point. The first end is connected to the adjusting rod 78 by rotation around the third rotating shaft 74, the second rod segment 7602 is connected to the bracket 62 by rotation around the fourth rotating shaft 87, one end of the second connecting rod 84 is connected to the first connecting rod 76 by rotation around the fifth rotating shaft 86 at point O, and the other end of the second connecting rod 84 is connected to the adjusting rod 78 by rotation through the first rotating shaft 82, the first rotating shaft 82, the second rotating shaft 68, the third rotating shaft 74, the fourth rotating shaft 87 and the fifth rotating shaft 86 are all perpendicular to the moving direction of the frame 92 and the first rotating shaft 82, the fourth rotating shaft 87 and the fifth rotating shaft 86 are all located in the same plane, this structure utilizes the dead point structure of the connecting rod driving assembly to achieve safe and stable operation, because when the first driving cylinder 72 is not working, the frame 92 cannot move, and the specific angle α is an obtuse angle.

[0048] In order to make the entire equipment structure more compact, the frame 92 includes a first connecting plate 9201 and a second connecting plate 9202 which are separately arranged. The first connecting plate 9201 and the second connecting plate 9202 are detachably fixedly connected via a U-shaped rod 66. The adjusting rod 78 includes a threaded rod connecting portion with a thread and a limiting portion with a plane. The limiting portion has a connecting hole for the first rotating shaft 82 to pass through. The threaded rod connecting portion is threadedly connected to the bottom of the groove of the U-shaped rod 66. The bottom of the groove of the U-shaped rod 66 also has a clearance hole. A nut 80 adapted to the threaded rod connecting portion is provided in the clearance hole. The nut 80 is limited in the clearance hole. The U-shaped rod 66 also has a limiting plate 70 protruding from the body for abutting against the plane of the limiting portion to prevent the adjusting rod 78 from rotating. Specifically, the fourth driving mechanism 54 is a molding cylinder. In order to obtain the moving distance of the molding cylinder in real time, a position sensor 88 is provided on the moving platform 32, and a sensing plate 90 that acts on the position sensor 88 is provided on the connecting block. The lifting mechanism 18 is installed on the frame through a vertical plate 1803. In order to prevent a large amount of heat from being generated when processing the pipe fittings, an oil nozzle is also provided on the vertical plate 1803. The oil nozzle is driven by an oil nozzle driving cylinder 20 to cool the pipe fittings. Specifically, the fourth driving mechanism of the present application is a molding cylinder. The first driving mechanism, the second driving mechanism and the third driving mechanism are driving cylinders respectively. In order to prevent oil leakage or accidents, a receiving plate is provided at the lower end of the molding cylinder. Specifically, a connecting plate 52 is also provided on one side of the receiving block. The oil circuit of the molding cylinder is connected to the first driving mechanism through the connecting plate.

[0049] Workflow:

[0050] S1: Install the tooth plate on the tooth plate mounting plate;

[0051] S2: Place the pipe to be processed in the concave arc groove of the lower clamping block 2401, then start the equipment, and the lifting mechanism 18 drives the upper clamping block 2402 to lightly press the pipe in the concave arc groove;

[0052] S3: Start selecting a calibration block 94 of a suitable size according to the customer's needs for the pipe forming position. The calibration block 94 moves from the slide rail of the unloading rack 1601 to the two ends of the calibration block to limit the two fixtures 24 between its two limit arms;

[0053] S4: The first driving cylinders 72 of the first tube end forming mechanism 12 and the second tube end forming mechanism 14 start to drive them to move in opposite directions to hold the side of the jig 24 against the limit arm, and start to remove the calibration block after the size is calibrated;

[0054] S5: The lifting mechanism 18 drives the upper clamping block 2402 to press the pipe in the concave arc groove;

[0055] S5: The fourth driving mechanism 54 of the first tube end forming mechanism 12 and the second tube end forming mechanism 14 starts to drive the mandrel 34 into the inner cavity of the tube to start forming the tube;

[0056] S5: After the inner ring mounting portion is formed, the first driving mechanism 48 drives the movable block 42, and then the second driving mechanism 56 drives the adjustment block 58 to replace the step surface to start processing the outer ring mounting portion of the pipe fitting. After the replacement is completed, the fourth driving mechanism 54 continues to form the pipe fitting;

[0057] S5: After the processing is completed, the third driving mechanism 60 pushes the tooth plate, the fourth driving mechanism 54 retracts to leave the tooth plate on the pipe, the movable block 42 retracts, the adjustment block 58 retracts, and the molding is completed;

[0058] S5: The unloading mechanism 16 starts to push the pushing member 1602 to push the pipe on the fixture 24 down.

[0059] The above-described embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field based on the present application are all within the protection scope of the present application. The protection scope of the present application shall be subject to the claims.

Claims

1. A double-head tube end forming machine, comprising a machine body with a workbench, characterized in that: The workbench is provided with a first tube end forming mechanism and a second tube end forming mechanism opposite to each other. The first tube end forming mechanism and the second tube end forming mechanism both include a jig for supporting and pressing the tube and a tube end forming assembly for processing the tube on the jig. One end of the tube is arranged on the jig of the first tube end forming mechanism, and the other end is arranged on the jig of the second tube end forming mechanism. A feeding mechanism is arranged between the first tube end forming mechanism and the second tube end forming mechanism. The first tube end forming mechanism and the second tube end forming mechanism can be close to or away from the feeding mechanism respectively. The tube end forming assembly includes A frame and a movable table arranged on the frame, the jig is arranged on the movable table, a molding assembly is arranged on one side of the movable table, the jig comprises a lower clamping block and an upper clamping block; the molding assembly is used to process the pipe fitting on the lower clamping block, and comprises a position switching mechanism, the position switching mechanism is used to adjust the molding position of the pipe fitting; the position switching mechanism comprises a movable block, an adjustment block, a molding assembly and a jig for placing the pipe fitting, the molding assembly comprises a mandrel, the mandrel has a shoulder, one end of the mandrel is arranged with the movable block, and the other end of the mandrel can extend into the pipe fitting The movable block is driven by a first driving mechanism to reciprocate along the length direction of the pipe, the movable block has a yielding portion, and the adjusting block has a plurality of step surfaces that can be abutted against the yielding portion to limit the moving distance of the mandrel; and also includes a mounting assembly, the mounting assembly is provided with a first mounting block and a second mounting block in sequence along the moving direction of the movable block, the two are detachably fixedly connected, the first mounting block and the second mounting block respectively have yielding holes for the movable block and the adjusting block to move, and the adjusting block is driven by a second driving mechanism to replace the movable block and the adjusting block. The step surface abutted by the giving part, the second driving mechanism is arranged on the mounting assembly through a mounting plate, and the driving end of the second driving mechanism is connected to the adjusting block; the forming assembly also includes a sleeve, the sleeve is sleeved on the core rod and its end is connected to the second mounting block, the core rod is provided with a connecting head, a first shaft section and a second shaft section in sequence along the gradually moving block, the outer diameter of the second shaft section is smaller than the outer diameter of the first shaft section, the inner cavity of the sleeve is adapted to the outer diameter of the first shaft section, and the distance between the inner surface of the inner cavity of the sleeve and the outer surface of the second shaft section is adapted to the wall thickness of the pipe fitting.

2. The double-head tube end forming machine according to claim 1, characterized in that: The unloading mechanism includes an unloading rack and a pushing piece arranged on the unloading rack. The pushing piece is driven by a driving cylinder to push down the pipe fitting on the fixture. The pushing piece has a wedge surface for pushing and a blocking surface arranged behind the wedge surface for blocking the material.

3. The double-head tube end forming machine according to claim 2, characterized in that: The lower clamping block is used to place the pipe to be processed, and it has a concave arc groove that matches the outer wall of the pipe. The upper clamping block is arranged on a lifting mechanism, and it is driven above the lower clamping block to approach and press the pipe on the lower clamping block and move away from and relax the pipe on the lower clamping block, and the upper clamping block has an upper convex arc groove that matches the outer wall of the pipe. The lower clamping block is arranged on a base, and the base is provided with a blanking plate for receiving the pipe pushed down by the blanking mechanism. The blanking plate is inclined from one end close to the jig to the end away from the jig, and a blocking portion is also provided on the end away from the jig. A blanking plate is provided on the side of the lower clamping block away from the driving cylinder of the blanking mechanism.

4. The double-head tube end forming machine according to claim 3, characterized in that: The lifting end of the lifting mechanism is connected to the upper clamping block through a connecting block to drive the upper clamping block to move up and down. A pressure rod is also provided between the connecting block and the upper clamping block. The upper clamping block has a mounting hole for installing the pressure rod, and the connecting block has a mounting groove for installing the pressure rod. A pressure ring is sleeved on the pressure rod. The aperture of the mounting hole is smaller than the aperture of the mounting groove so as to limit the pressure ring in the mounting groove. A pressure spring is sleeved on the pressure rod. The upper end of the pressure spring acts on the bottom of the mounting groove, and the lower end of the pressure spring acts on the upper end surface of the pressure ring. The lower end of the pressure rod extends from the upper convex arc groove.

5. The double-head tube end forming machine according to claim 1, characterized in that: A toothed plate support block is provided on the side of the second mounting block facing away from the first mounting block, a plurality of positioning pins are provided on the second mounting block for connecting the toothed plate support block, the toothed plate support block has a clearance hole for the core rod to pass through, and two third driving mechanisms are also provided on the second mounting block, the driving end of the third driving mechanism drives the toothed plate support block to reciprocate along the direction of movement of the movable block.

6. The double-head tube end forming machine according to claim 3, characterized in that: The workbench is also provided with a connecting rod driving assembly for driving the pipe end forming assembly to move along the length direction of the pipe fitting, the pipe end forming assembly includes a frame, the connecting rod driving assembly includes a first driving cylinder, a connecting rod assembly driven by the first driving cylinder, a bracket for mounting the connecting rod assembly, and an adjustment rod with one end connected to the frame and the other end connected to the connecting rod assembly for rotation around a first rotating shaft, the end of the first driving cylinder away from the driving end is connected to a base for rotation around a second rotating shaft, the connecting rod assembly includes a first connecting rod and a second connecting rod, the first connecting rod includes an integrally connected and has A first rod segment and a second rod segment having an included angle α intersect at a point O, the first rod segment is rotatably connected to a driving end of the first driving cylinder around a third rotating axis, the second rod segment is rotatably connected to the bracket around a fourth rotating axis, one end of the second connecting rod is rotatably connected to the first connecting rod at a point O around a fifth rotating axis, the other end of the second connecting rod is rotatably connected to the adjusting rod via the first rotating axis, the first rotating axis, the second rotating axis, the third rotating axis, the fourth rotating axis and the fifth rotating axis are all perpendicular to the moving direction of the frame, and the first rotating axis, the fourth rotating axis and the fifth rotating axis are all located in the same plane.

7. The double-head tube end forming machine according to claim 6, characterized in that: The frame includes a first connecting plate and a second connecting plate which are separately arranged, and the first connecting plate and the second connecting plate are detachably fixedly connected via a U-shaped rod. The adjusting rod includes a threaded rod connecting portion with a thread and a limiting portion with a plane. The limiting portion has a connecting hole for the first rotating shaft to pass through, and the threaded rod connecting portion is threadedly connected to the bottom of the groove of the U-shaped rod. The bottom of the groove of the U-shaped rod also has a clearance hole, in which a nut adapted to the threaded rod connecting portion is arranged, and the nut is limited in the clearance hole. The U-shaped rod also has a limiting plate protruding from the main body and used to abut against the plane of the limiting portion to prevent the adjusting rod from rotating.

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