CN110935745B - Pipe end forming machine - Google Patents
Pipe end forming machine Download PDFInfo
- Publication number
- CN110935745B CN110935745B CN201911315423.1A CN201911315423A CN110935745B CN 110935745 B CN110935745 B CN 110935745B CN 201911315423 A CN201911315423 A CN 201911315423A CN 110935745 B CN110935745 B CN 110935745B
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- mould
- gear disc
- die
- taper sleeve
- core rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
Abstract
The invention discloses a pipe end forming machine, which comprises a rack main body and a hydraulic station, wherein the rack main body comprises a rack, a die connecting assembly and a driving assembly, the die is installed on the rack through the die connecting assembly, two ends of the driving assembly are respectively connected with the hydraulic station and the die, the die comprises a core rod positioned in the center of the die, and a forming inner die, a forming outer die and an outer taper sleeve which are sequentially sleeved outside the upper end of the core rod, the driving assembly drives the core rod to move up and down and pushes the forming inner die to move, the die connecting assembly comprises a gear disc, the gear disc is installed on the rack, a bearing is arranged between the gear disc and a support, a through hole is formed in the center of the gear disc, the lower end of the core rod penetrates through the through hole, the core rod is not contacted with the gear disc, the forming inner die is detachably connected with the gear disc, the driving assembly drives the gear disc to rotate, and the gear disc drives the forming inner die to rotate. The machine frame drives the core rod to move and the forming inner mold segment to rotate, so that the mold is stable in operation, and the forming machine is compact in integral structure, low in cost and wide in applicability.
Description
Technical Field
The invention belongs to the field of part sizing equipment, and particularly relates to a pipe end forming machine.
Background
When a tubular or cylindrical part is machined, it is often necessary to change the diameter of the end of the pipe, i.e. to perform necking and flaring operations, or to perform one or more necking and flaring operations, in order to form a machined part with an uneven surface along the direction of the center line, or a machined part with a changed diameter along the direction of the center line. At present, when a pipe fitting is subjected to sizing processing, an adopted sizing processing die is arranged on a rack and is provided with a plurality of coaxially and movably spliced die flaps, and a part contacting with the die flaps is pressurized by the arrangement that the plurality of die flaps are simultaneously far away from or close to a central line so as to change the diameter of the part, namely, the part is subjected to diameter expansion or diameter reduction operation. However, the joint of the mold halves cannot ensure no gap, and during the expanding operation, the gap between the adjacent mold halves increases when the mold halves are far away from the center line, which leads to poor roundness of the workpiece. Correspondingly, the main body of the frame is used for assisting the sizing processing die to finish corresponding operations, and in order to improve the quality of a final processing product, the main body of the frame must adapt to the functional requirements of the die.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a pipe end forming machine, wherein a die is stably installed on a rack through a die connecting assembly such as a gear disc, the rack simultaneously drives a core rod to move and a formed inner die clack to rotate, the die is stable in operation, and the forming machine is compact in integral structure, low in cost and wide in applicability.
In order to achieve the purpose, the invention adopts the technical scheme that:
a pipe end forming machine comprises a machine frame main body and a hydraulic station for providing power, wherein the machine frame main body comprises a machine frame and a die, mould coupling assembling and drive assembly, the mould passes through mould coupling assembling to be installed in the frame, hydraulic pressure station and mould are connected respectively at the drive assembly both ends, the mould is including being located its central plug and cup jointing mould lamella in the outside shaping of plug upper end in proper order, shaping outer mould lamella and outer taper sleeve, drive assembly drives the plug and reciprocates, the plug moves down in promoting the shaping mould lamella and removes towards shaping outer mould lamella, mould coupling assembling includes the toothed disc, the toothed disc is installed in the frame, be equipped with the bearing between toothed disc and the support, the toothed disc center is equipped with the through-hole, the plug lower extreme passes the through-hole, the plug does not contact with the toothed disc, the connection toothed disc can be dismantled to the mould lamella in the shaping, drive assembly drives the toothed disc rotatory, the toothed disc drives the rotation of mould lamella in the shaping.
As a further improvement of the above technical solution:
the gear disc comprises a circular plate and a sleeve which are integrally connected, the circular plate is circular, the sleeve is cylindrical, one end of the sleeve is vertically connected with the center of the circular plate, and a T-shaped gear disc with a middle through hole is formed.
The die connecting assembly further comprises a thrust roller bearing and a cylindrical roller bearing, the thrust roller bearing is arranged between the die connecting assembly and the circular plate, and the cylindrical roller bearing is arranged between the die connecting assembly and the sleeve.
The whole circumference of the circular plate is evenly provided with gears at intervals, the driving assembly comprises a rotating disk oil cylinder, and the rotating disk oil cylinder sequentially contacts and pushes the gears of the circular plate to drive the circular plate to rotate in a stepping mode.
The mould is still including cup jointing the mould core in the basis between the mould lamella in the outside of plug upper end and shaping, the mould core includes mould core unit in the polylith in the basis, mould core unit uses the plug to splice as the coaxial activity of central line in proper order in the polylith, around the plug round, the mould lamella includes polylith centre form unit in the shaping, polylith centre form unit uses the plug to splice as the coaxial activity of central line in proper order, around mould core round in the basis, the quantity of centre form unit and interior mould core unit is the same, the lower extreme that the lateral surface of plug was kept away from to interior mould core unit is equipped with the first step of mould core unit lateral surface in the protrusion, centre form unit is located on first step, with interior mould core unit through the pin junction.
The upper end face of the circular plate is provided with a plurality of inwards concave sliding grooves which are arranged along the radial direction of the circular plate, the sliding grooves are evenly distributed along the circumferential direction of the circular plate, the number of the sliding grooves is equal to that of the inner mold core units, the bottom faces of the inner mold core units are fixedly provided with fixing blocks protruding out of the bottom faces, and when the die is installed on the rack, the fixing blocks are slidably arranged in the sliding grooves.
The frame includes braced frame and from the bottom up parallel interval distribution's holding down plate, first fixed bed, second fixed bed and taper sleeve mounting panel in proper order, and first fixed bed and second fixed bed fixed mounting are on braced frame, and first fixed bed includes a plurality of first fixed plates, and the second fixed bed includes a plurality of second fixed plates, a plurality of first fixed plates and a plurality of second fixed plate fixed mounting are on braced frame. There is the interval between a plurality of first fixed plates, also has the interval between a plurality of second fixed plates.
The die connecting assembly further comprises a gear disc supporting block, the gear disc supporting block is installed at the center of the second fixing layer, and the gear disc is movably installed on the gear disc supporting block.
When the die is installed on the frame, the lower end of the core rod is connected with the lower pressing plate through the locking bolt, the driving assembly further comprises at least one core rod driving oil cylinder, the driving oil cylinder is located on the first fixing layer, and a driving shaft of the core rod driving oil cylinder is connected with the lower pressing plate.
When the mold is installed on the rack, the taper sleeve mounting plate is sleeved outside the outer taper sleeve, the taper sleeve mounting plate is fixedly connected with the outer taper sleeve, the mold connecting assembly further comprises a plurality of taper sleeve driving rods, the driving assembly further comprises a taper sleeve driving oil cylinder, one end of each taper sleeve driving rod is connected with the taper sleeve mounting plate, and the other end of each taper sleeve driving oil cylinder is vertically downward and located in an interval between the taper sleeve mounting plate and the first fixing layer and connected with the taper sleeve driving oil cylinder.
Compared with the prior art, the invention has the beneficial effects that:
(1) the die is stably arranged on the frame through a die connecting assembly such as a gear disc;
(2) the frame drives the plug simultaneously and removes and the shaping inner mould lamella is rotatory, and the mould operates steadily: the lower pressing plate of the frame drives the core rod to move up and down, and simultaneously, the gear disc drives the forming inner mould clacks (a plurality of inner mould units) to rotate;
(3) the forming machine has compact integral structure, low cost and wide applicability.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic top view of an embodiment of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure taken along the line A-A of FIG. 2;
FIG. 4 is a schematic view of the cross-sectional structure of FIG. 2 taken along the direction C-C;
FIG. 5 is a schematic view of a mold mating gear plate configuration according to one embodiment of the present invention;
FIG. 6 is a schematic perspective view of a mold according to one embodiment of the present invention;
FIG. 7 is a schematic diagram of a gear plate and rotating plate cylinder structure according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a front view of a hydraulic station according to an embodiment of the present invention;
fig. 9 is a schematic top view of a hydraulic station according to an embodiment of the present invention.
Detailed Description
The present invention will be described more fully hereinafter with reference to the following examples. The following examples are illustrative only and are not to be construed as limiting the invention.
A pipe end forming machine is shown in figures 1-9 and comprises a machine frame main body and a hydraulic station for providing power. The frame main part includes frame, mould coupling assembling and drive assembly, and the mould passes through mould coupling assembling to be installed in the frame, and hydraulic pressure station and mould are connected respectively to the drive assembly both ends, and the hydraulic pressure station provides power for drive assembly, and drive assembly drives the moving part removal of mould.
The frame includes braced frame 15 and from the bottom up parallel interval distribution's holding down plate 14, first fixed bed, the fixed bed of second and taper sleeve mounting panel 11 in proper order, and first fixed bed and the fixed bed fixed mounting of second are on braced frame 15, and first fixed bed includes a plurality of first fixed plates 12, and the fixed bed of second includes a plurality of second fixed plates 13, a plurality of first fixed plates 12 and a plurality of second fixed plates 13 fixed mounting are on braced frame 15. There is the interval between a plurality of first fixed plates 12, also has the interval between a plurality of second fixed plates 13 to each part of holding the mould, make full use of the space of frame, make the frame structure compacter.
The mold comprises a core rod 21, a taper block 22, a basic inner mold core, a molding inner mold half, a molding outer mold half, an outer taper chamfer and an outer taper sleeve 27, wherein the taper block 22, the basic inner mold core, the molding inner mold half, the molding outer mold half, the outer taper chamfer and the outer taper sleeve are sequentially sleeved on the outer portion of the upper end of the core rod 21 from inside to outside as shown in fig. 5 and 6.
The upper end of the core rod 21 is fixedly provided with a limiting seat 20, the limiting seat 20 is sleeved outside the upper end of the core rod 21 and protrudes out of the outer surface of the core rod 21 along the whole circumferential direction of the upper end of the core rod 21, and the limiting seat 20 is fixedly connected with the core rod 21. The outer surface of the mandrel 21 is stepped in the direction of the center line of the mandrel 21, i.e., the outer diameter of the mandrel 21 is not completely uniform throughout. The first-stage core rod and the second-stage core rod are sequentially arranged from one end of the core rod 21 provided with the limiting seat 20 to the other end, and the outer diameter of the second-stage core rod is larger than that of the first-stage core rod.
The taper block 22 is movably sleeved outside the first-stage core rod, and the taper block 22 contacts the first-stage core rod. Because the connecting position of the first-stage core rod and the second-stage core rod forms a step and plays a role in limiting a part sleeved outside the first-stage core rod, the limiting seat 20 and the second-stage core rod limit the taper block 22 outside the first-stage core rod, the taper block 22 is prevented from sliding along the central line direction of the core rod 21, and the taper block 22 can rotate by taking the first-stage core rod as a central axis. The taper block 22 becomes gradually larger from one end to the other end, specifically, the cross section of the taper block 22 is a regular polygon, and the cross section of the taper block 22 becomes gradually larger from one end to the other end. Correspondingly, the taper block 22 includes a plurality of side surfaces, each side surface is trapezoidal, and the side surfaces of the plurality of trapezoids are connected in sequence. The upper end of the taper block 22 is large, and the lower end is small, that is, the end of the taper block 22 close to the limiting seat 20 is larger than the end far away from the limiting seat 20. In other words, the distance between the outer side surface of the taper block 22 away from the mandrel 21 and the mandrel 21 is gradually reduced from the upper end of the mandrel 21 downward. The outer side surface of the taper block 22, which is far away from the core rod 21, is fixedly provided with a plurality of lower sliding blocks 29, the length direction of the lower sliding blocks 29 and the center line of the core rod 21 are located in the same plane, the plurality of lower sliding blocks 29 are uniformly distributed along the circumferential direction of one end of the taper block 22, and specifically, each side surface of the taper block 22 is provided with one lower sliding block 29.
The basic inner mold core comprises a plurality of coaxial movably-spliced inner mold core units 23, and specifically, the plurality of inner mold core units 23 are coaxially and sequentially movably spliced by taking the core rod 21 as a central line and surround the core rod 21 for one circle. The inner side surface of the inner core unit 23 close to the core rod 21 is attached to the outer side surface of the taper block 22, that is, the distance between the inner side surface of the inner core unit 23 close to the core rod 21 and the core rod 21 is gradually reduced from the upper end of the core rod 21 downwards. The inner side surface of the inner core unit 23 close to the core rod 21 is provided with an inwards concave lower chute, the length direction of the lower chute and the central line of the core rod 21 are located in the same plane, the number of the lower sliders 29 is the same as that of the lower chutes, namely, the number of the lower sliders 29 is the same as that of the inner core unit 23, the lower sliders 29 and the lower chutes are correspondingly arranged, and the lower sliders 29 are slidably arranged in the lower chute, namely, the lower sliders 29 are respectively slidably arranged in the lower chutes. The lower end of the outer side surface of the inner mold core unit 23 far away from the core rod 21 is sequentially provided with a first step and a third step which protrude out of the outer side surface of the inner mold core unit 23, the third step is positioned below the first step, and the third step protrudes out of the first step. In other words, the outer side surface of the inner core unit 23 away from the core rod 21 is provided with two steps, the third step is a one-step, and the first step is a two-step higher than the one-step. In addition, a fixing block protruding out of the bottom surface is fixedly arranged on the bottom surface of the inner mold core unit 23.
The inner molding die comprises a plurality of inner mold units 24 which are coaxially movably spliced, and specifically, the inner mold units 24 are coaxially and sequentially movably spliced by taking the core rod 21 as a central line and surround the basic inner mold core for one circle. The number of inner core units 23 is the same as the number of inner core units 24. The inner mold units 24 are located on the first steps, the plurality of inner mold units 24 are sequentially connected with the first steps of the plurality of inner mold core units 23 through pins, and the inner mold units 24 and the inner mold core units 23 are connected through pins to realize common movement.
The molding outer mold flap comprises a plurality of coaxial movably spliced outer mold units 25, and the outer mold units 25 are coaxially and sequentially movably spliced by taking the core rod 21 as a central line and surround the molding inner mold flap for one circle. The number of outer mold units 25 is the same as the number of inner mold units 24. The parts to be machined are located between the profiled inner and outer mould halves, i.e. between the inner mould units 24 and the outer mould units 25. Two opposite surfaces of the outer die unit 25 and the inner die unit 24 are uneven and smooth surfaces, that is, the side surface of the outer die unit 25 close to the inner die unit 24 and the side surface of the inner die unit 24 close to the outer die unit 25 are uneven and smooth surfaces, the two opposite surfaces of the outer die unit 25 and the inner die unit 24 are designed into uneven shapes which are matched with each other, and when the plurality of outer die units 25 and the plurality of inner die units 24 are mutually extruded, parts between the outer die units 25 and the inner die units 24 are extruded into cylindrical parts with different diameters.
The outer cone beveling comprises a plurality of coaxial movably spliced beveling units 26, and specifically, the beveling units 26 are coaxially and sequentially movably spliced by taking the core rod 21 as a central line and surround the outer mould valve for one circle. The distance between the outer side surface of the beveling unit 26 away from the mandrel 21 and the mandrel 21 gradually increases from the upper end of the mandrel 21 downward. The number of the beveling units 26 is the same as that of the outer mold units 25, the lower end of the beveling unit 26 close to the inner side surface of the mandrel 21 is provided with a second step protruding out of the inner side surface of the beveling unit 26, the outer mold unit 25 is positioned on the second step, and the outer mold unit 25 is connected with the second step through a pin. The outer mold unit 25 and the chamfering unit 26 are moved together by a pin connection.
It should be noted that, a mold half base 28 is arranged on the third step, and the inner mold half and the outer mold half are located on the mold half base 28 and used for supporting the inner mold half and the outer mold half to move the outer mold units 25 and the inner mold units 24 along the upper end face of the mold half base 28, so as to prevent the outer mold units 25 and the inner mold units 24 from shaking during the movement when the outer mold units 25 and the inner mold units 24 are not supported.
The inner side surface of the outer taper sleeve 27 close to the mandrel 21 is attached to the outer side surface of the beveling unit 26, that is, the distance between the inner side surface of the outer taper sleeve 27 close to the mandrel 21 and the mandrel 21 gradually increases from the upper end of the mandrel 21 downward.
The mold connecting assembly includes a gear plate 31, a mold auxiliary support plate 33, a thrust roller bearing 34, a cylindrical roller bearing 35, a locking bolt 36, a gear plate support block 38, and a plurality of taper sleeve drive rods 37. A gear disc support block 38 is mounted in the center of the second fixed floor, and a gear disc 31 is movably mounted on the gear disc support block 38. The gear plate 31 comprises a circular plate 311 and a sleeve 312 which are integrally connected, wherein the circular plate 311 is in a circular ring shape, the sleeve 312 is in a cylindrical shape, one end of the sleeve 312 is vertically connected with the center of the circular plate 311, and a T-shaped gear plate 31 with a through hole in the middle is formed. The circular plate 311 is provided with gears at regular intervals throughout its circumference. The upper end surface of the circular plate 311 is provided with a plurality of concave sliding grooves 313 which are opened along the radial direction of the circular plate 311, the plurality of sliding grooves 313 are evenly distributed along the circumferential direction of the circular plate 311, and the number of the sliding grooves 313 is the same as that of the inner core units 23. The thrust roller bearing 34 is provided between the gear disk support block 38 and the circular plate 311, and the cylindrical roller bearing 35 is provided between the gear disk support block 38 and the sleeve 312. In this way, the gear plate 31 can rotate about its center line, and is stably supported by the gear plate support block 38 via the thrust roller bearing 34 and the cylindrical roller bearing 35. A mold auxiliary support plate 33 is installed at the periphery of the gear disc support block 38 on the second fixed layer for auxiliary support of the mold. One end of the taper sleeve driving rod 37 is connected with the taper sleeve mounting plate 11, and the other end of the taper sleeve driving rod is vertically downward and positioned in the interval between the taper sleeve mounting plate 11 and the first fixed layer to be connected with a driving assembly. Preferably, there are two taper sleeve driving rods 37, the two taper sleeve driving rods 37 are located in the same plane with the core rod 21, and the two taper sleeve driving rods 37 are located on two sides of the core rod 21 respectively. The taper sleeve driving rods 37 are used for driving the taper sleeve mounting plate 11 and the outer taper sleeve 27 to move downwards, and the arrangement of the two taper sleeve driving rods 37 on the two sides of the core rod 21 is beneficial to uniformly applying force to the outer taper sleeve 27 when the taper sleeve driving rods 37 pull downwards, so that the outer taper sleeve 27 can stably move.
The mode that the mould is arranged on the frame is as follows: the core rod 21 passes through the middle through hole of the gear disc 31, the core rod 21 does not contact with the gear disc 31, the basic inner mold core is supported on the circular plate 311 of the gear disc 31, the fixing block at the bottom surface of the inner mold core unit 23 is slidably arranged in the sliding groove 313, and the mold half base 28 is supported on the mold auxiliary supporting plate 33. Taper sleeve mounting panel 11 cup joints in the outside of outer taper sleeve 27, and the upper end of the circumference side of outer taper sleeve 27 is equipped with the protrusion the connection platform of circumference side, outer taper sleeve 27 carries out pin joint through connecting platform and taper sleeve mounting panel 11. The lower end of the core rod 21 is connected with the lower pressure plate 14 through a locking bolt 36.
Based on the connection, the mold is stably supported on the frame through the mold connecting piece, the gear disc 31 can drive the taper block 22, the basic inner mold core and the molded inner mold segment to rotate, and specifically, the core rod 21 is taken as the central line to rotate. The co-rotation enables the inner die unit 24 to rotate while applying force to the part during machining of the part, and enables the roundness of the part after the machining diameter is changed to be better.
It should be noted that the mold auxiliary supporting plate 33 and the gear wheel supporting block 38 are block-shaped or columnar-shaped, and are used for supporting the mold, and the specific shape thereof is flexibly designed according to the application scenario, which is well known to those skilled in the art and will not be described herein again.
The drive assembly includes two taper sleeve drive cylinders 41, two mandrel drive cylinders 42 and a rotating disc cylinder 43. The taper sleeve driving oil cylinder 41 is positioned below the second fixed layer, and a driving shaft of the taper sleeve driving oil cylinder 41 penetrates through the second fixed layer to be connected with the taper sleeve driving rod 37. The two mandrel driving oil cylinders 42 are positioned on the first fixed layer, the driving shafts of the two mandrel driving oil cylinders 42 are positioned in the same plane with the mandrel 21, and the driving shafts of the two mandrel driving oil cylinders 42 are respectively positioned at two sides of the mandrel 21. In a plane perpendicular to the mandrel 21, the projections of the two taper sleeve driving cylinders 41 and the two mandrel driving cylinders 42 are positioned on four vertexes of a quadrangle, and the arrangement makes the taper sleeve driving cylinders 41 and the mandrel driving cylinders 42 fully utilize the space in the frame on the basis of realizing the functions of the taper sleeve driving cylinders 41 and the mandrel driving cylinders 42. The driving shaft of the mandrel driving oil cylinder 42 is connected with the lower pressing plate 14, namely, the mandrel driving oil cylinder 42 directly drives the lower pressing plate 14 to move up or down, and the mandrel 21 is driven to move simultaneously due to the connection between the mandrel 21 and the lower pressing plate 14. In order to guide the ascending and descending of the lower pressing plate 14 and make the movement of the lower pressing plate 14 more stable, four corners of the lower pressing plate 14 are respectively provided with a guide shaft 141, one end of the guide shaft 141 is vertically and fixedly connected with the lower pressing plate 14, the other end of the guide shaft passes through a guide hole formed in the first fixing plate 12, and the guide shaft 141 moves along the guide hole in the moving process of the lower pressing plate 14.
The turntable cylinder 43 sequentially contacts and pushes the gears of the circular plate 311 to drive the circular plate 311 to rotate in a stepwise manner. The swivel plate cylinder 43 is located in the space between the second fixed floor and the cone mounting plate 11. The taper sleeve driving cylinder 41, the mandrel driving cylinder 42 and the rotating disc cylinder 43 are powered by a hydraulic station.
When parts with different requirements need to be machined, only the inner mold half and the outer mold half can be replaced, namely only the inner mold units 24 and the outer mold units 25 can be replaced, and the inner mold units 24 and the outer mold units 25 can be conveniently taken out.
The hydraulic station is shown in fig. 8 and 9, and includes a motor 51, an oil pump, an oil tank 52, a plurality of oil supply units and a plurality of electromagnetic valves, wherein the motor 51 drives the oil pump to rotate, the oil pump pumps oil in the oil tank 52 into a driving assembly through the oil supply units, mechanical energy is converted into pressure energy of hydraulic oil, and the electromagnetic valves are used for controlling flow rate, pressure and the like of oil supply. The mailbox is provided with an oil filling port, each oil supply component comprises an oil inlet 541 and an oil outlet 542, the oil inlets 541 are connected with the driving assembly through oil supply pipelines to provide pressure oil for the driving assembly, and the oil outlets 542 are connected with the driving assembly through oil return pipelines to receive oil flowing back from the driving assembly. Specifically, the taper sleeve driving oil cylinder 41, the mandrel driving oil cylinder 42 and the rotating disc oil cylinder 43 are respectively communicated with an oil supply component. The solution of the hydraulic station is well known to the skilled person and will not be described in detail here.
The working process of the invention is as follows: the mandrel driving oil cylinder 42 drives the lower pressing plate 14 to ascend, the lower pressing plate 14 synchronously drives the mandrel 21 to move upwards, the gap between the inner die unit 24 and the outer die unit 25 is larger than the thickness of a part to be processed, the part is placed into the gap, then the mandrel driving oil cylinder 42 drives the lower pressing plate 14 to move downwards, the lower pressing plate 14 synchronously drives the mandrel 21 to move downwards, meanwhile, the taper sleeve driving oil cylinder 41 drives the outer taper sleeve 27 to move downwards through the taper sleeve driving rod 37, in the process, the taper block 22 moves downwards and simultaneously drives the inner die units 23 to expand, the inner die units 23 drive the inner die units 24 to expand, the inner die units 24 outwards apply force to the part, the rotating disk oil cylinder 43 drives the gear disk 31 to rotate, the gear disk 31 drives the inner die units 23 and the inner die units 24 to rotate, the outer taper sleeve 27 applies force to the beveling units 26, and the beveling units 26 apply force to the outer die units 25, and (3) contracting the outer die units 25 or resisting the extrusion of the inner die units 24, changing the diameter of the part after extrusion, driving the lower pressing plate 14 to ascend by the core rod driving oil cylinder 42 and the core rod 21 to ascend by the core rod, driving the outer taper sleeve 27 to ascend by the taper sleeve driving oil cylinder 41, enabling the gap between the inner die unit 24 and the outer die unit 25 to be larger than the thickness of the part to be machined, taking out the part, finishing machining, putting the next part to be machined, and repeating the steps.
Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the insubstantial modifications and adaptations made by those skilled in the art according to the above descriptions of the present invention are within the scope of the present invention.
Claims (10)
1. The utility model provides a pipe end forming machine, including the frame main part and the hydraulic pressure station that provides power, the frame main part includes the frame, a mold, mould coupling assembling and drive assembly, the mould passes through mould coupling assembling and installs in the frame, hydraulic pressure station and mould are connected respectively at the drive assembly both ends, the mould is including being located central plug (21) and cup jointing in proper order in the outside shaping of plug (21) upper end, shaping outer mould lamella and outer taper sleeve (27), drive assembly drives plug (21) and reciprocates, mould lamella moved towards shaping outer mould lamella in promoting the shaping when plug (21) move down, a serial communication port, mould coupling assembling includes toothed disc (31), toothed disc (31) installs in the frame, be equipped with the bearing between toothed disc (31) and the frame, toothed disc (31) center is equipped with the through-hole, plug (21) lower extreme passes the through-hole, plug (21) do not contact with toothed disc (31), the inner molding die is detachably connected with the gear disc (31), the driving assembly drives the gear disc (31) to rotate, and the gear disc (31) drives the inner molding die to rotate.
2. The pipe end forming machine of claim 1, wherein: the gear disc (31) comprises a circular plate (311) and a sleeve (312) which are integrally connected, the circular plate (311) is circular, the sleeve (312) is cylindrical, one end of the sleeve (312) is vertically connected with the center of the circular plate (311), and a T-shaped gear disc (31) with a through hole in the middle is formed.
3. The pipe end forming machine of claim 2, wherein: the die connecting assembly further comprises a thrust roller bearing (34) and a cylindrical roller bearing (35), the thrust roller bearing (34) is arranged between the gear disc supporting block (38) and the circular plate (311), and the cylindrical roller bearing (35) is arranged between the gear disc supporting block (38) and the sleeve (312).
4. The pipe end forming machine of claim 2, wherein: the whole circumference of the circular plate (311) is uniformly provided with gears at intervals, the driving assembly comprises a gear disc oil cylinder (43), and the gear disc oil cylinder (43) sequentially contacts and pushes the gears of the circular plate (311) to drive the circular plate (311) to rotate in a stepping mode.
5. The pipe end forming machine of claim 2, wherein: the mould is still including cup jointing the mould core in the basis between the mould lamella in plug (21) upper end outside and shaping, the mould core includes mould core unit (23) in the polylith in the basis, mould core unit (23) use plug (21) to splice as central line coaxial activity in proper order in polylith, around plug (21) round, mould lamella includes polylith centre form unit (24) in the shaping, polylith centre form unit (24) use plug (21) to splice as central line coaxial activity in proper order, mould core round in the basis, the quantity of centre form unit (24) and interior mould core unit (23) is the same, the lower extreme that the lateral surface of plug (21) was kept away from in interior mould core unit (23) is equipped with the first step of protrusion interior mould core unit (23) lateral surface, centre form unit (24) are located on first step, through the pin junction with interior mould core unit (23).
6. The pipe end forming machine of claim 5, wherein: the upper end face of the circular plate (311) is provided with a plurality of inwards concave sliding grooves (313) which are formed along the radial direction of the circular plate (311), the plurality of sliding grooves (313) are uniformly distributed along the circumferential direction of the circular plate (311), the number of the sliding grooves (313) is the same as that of the inner mold core units (23), the bottom faces of the inner mold core units (23) are fixedly provided with fixing blocks protruding out of the bottom faces, and when the die is installed on a rack, the fixing blocks are arranged in the sliding grooves (313) in a sliding mode.
7. The pipe end forming machine of claim 1, wherein: the frame includes braced frame (15) and holding down plate (14) of parallel interval distribution in proper order from the bottom up, first fixed bed, second fixed bed and taper sleeve mounting panel (11), first fixed bed and second fixed bed fixed mounting are on braced frame (15), first fixed bed includes a plurality of first fixed plates (12), the second fixed bed includes a plurality of second fixed plates (13), a plurality of first fixed plates (12) and a plurality of second fixed plate (13) fixed mounting are on braced frame (15), there is the interval between a plurality of first fixed plates (12), also there is the interval between a plurality of second fixed plates (13).
8. The pipe end forming machine of claim 7 wherein: the die connecting assembly further comprises a gear disc supporting block (38), the gear disc supporting block (38) is installed at the center of the second fixed layer, and the gear disc (31) is movably installed on the gear disc supporting block (38).
9. The pipe end forming machine of claim 7 wherein: when the die is installed on the frame, the lower end of the core rod (21) is connected with the lower pressing plate (14) through the locking bolt (36), the driving assembly further comprises at least one core rod driving oil cylinder (42), the core rod driving oil cylinder (42) is located on the first fixing layer, and a driving shaft of the core rod driving oil cylinder (42) is connected with the lower pressing plate (14).
10. The pipe end forming machine of claim 7 wherein: when the mould was installed in the frame, taper sleeve mounting panel (11) cup jointed in the outside of outer taper sleeve (27), taper sleeve mounting panel (11) and outer taper sleeve (27) fixed connection, mould coupling assembling still includes a plurality of taper sleeve actuating levers (37), drive assembly still includes taper sleeve drive cylinder (41), taper sleeve mounting panel (11) is connected to taper sleeve actuating lever (37) one end, the other end is perpendicular downwards, be located the interval between taper sleeve mounting panel (11) and the first fixed bed, connect taper sleeve drive cylinder (41).
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| CN201911315423.1A CN110935745B (en) | 2019-12-19 | 2019-12-19 | Pipe end forming machine |
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| CN201911315423.1A CN110935745B (en) | 2019-12-19 | 2019-12-19 | Pipe end forming machine |
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| CN110935745B true CN110935745B (en) | 2021-11-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545592A (en) * | 2020-04-15 | 2020-08-18 | 江苏首华智能装备有限公司 | Pipe diameter machining system |
| CN111545593A (en) * | 2020-04-15 | 2020-08-18 | 江苏首华智能装备有限公司 | Pipe diameter machining method |
| CN113894212A (en) * | 2021-09-28 | 2022-01-07 | 成都同泰汽车零部件有限公司 | Pipe end forming and sizing device for pipe fitting of automobile silencer |
| CN114011965A (en) * | 2021-10-08 | 2022-02-08 | 福建意格机械设备有限公司 | Integrated forming device for metal cylinder |
| CN117696767B (en) * | 2024-02-05 | 2024-04-16 | 常州良旭车辆配件有限公司 | Double-acting pipe end forming machine |
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