CN222094537U

CN222094537U - Rotary expansion device

Info

Publication number: CN222094537U
Application number: CN202420628872.1U
Authority: CN
Inventors: 李亮
Original assignee: Hunan Zhilingyun Aviation Technology Co ltd
Current assignee: Hunan Zhilingyun Aviation Technology Co ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-12-03
Anticipated expiration: 2034-03-29

Abstract

The utility model belongs to the field of mold expansion technology, and specifically relates to a rotary mold expansion device, including a base frame, a die, a split-flap punch and a conical core block, wherein the die and the split-flap punch are both arranged on the base frame, the split-flap punch includes a plurality of mold flaps, and the plurality of mold flaps are all located in the die, the conical core block is inserted between the plurality of mold flaps, and the axis of the conical core block is in the same straight line as the axis of the die, the conical core block can move along its own axis direction to push the plurality of mold flaps toward the inner wall of the die, and the die or the plurality of mold flaps can rotate around the axis of the die. The utility model can ensure that the workpiece can be more evenly squeezed by the mold flaps in the circumferential direction, improve the consistency of the thickness of the workpiece after expansion and the accuracy of the concentricity, reduce the need for secondary shaping, and improve the efficiency and quality of expansion.

Description

Rotary expansion device

Technical Field

The utility model belongs to the technical field of expansion, and particularly relates to a rotary expansion device.

Background

The expansion technology is a basic processing technology for processing sheet metal forming parts, and is mainly used for changing the shape of the revolving body parts, and the blank is attached to an inner die and an outer die by a certain expansion amount, so that the required shape and size are realized. In actual production, the expansion methods generally adopted mainly include rigid mold expansion, solid soft mold expansion, hydraulic expansion and the like. The rigid mold expansion is to push the split male mold comprising several mold halves with conic core block to expand the workpiece into required shape, such as the rigid split expansion mold with rotating casing and the expansion method provided by CN 202010613032.4. When all the die petals are propped open by the conical core block in the expansion mode, gaps among the die petals become large, even if a large number of die petals are arranged, the die petals are dense, the gaps can not be completely eliminated, partial areas on the inner side of a workpiece are not directly acted by the die petals, the concentricity precision after expansion is relatively low, and secondary shaping is needed in some cases.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a rotary expansion device which improves the molding precision and has wide application range on the basis of the rigid mold expansion.

The utility model comprises a chassis, a female die, a split male die and a conical core block, wherein the female die and the split male die are arranged on the chassis, the split male die comprises a plurality of die petals, the die petals are arranged in the female die, the conical core block is arranged among the die petals in a penetrating manner, the axis of the conical core block is in the same straight line with the axis of the female die, the conical core block can move along the axis direction of the female die so as to push the die petals to move towards the inner wall of the female die, and the female die or the die petals can rotate around the axis of the female die.

Still further still include the terrace die mounting panel, the terrace die mounting panel sets up on the chassis, and several mould lamella all set up on the terrace die mounting panel, and several mould lamella along the radial and terrace die mounting panel sliding fit of die.

Still further still include sharp actuating mechanism, sharp actuating mechanism sets up in the chassis below, all be provided with the through-hole on chassis and the terrace die mounting panel, be provided with the transmission connecting piece on sharp actuating mechanism's the output, the transmission connecting piece passes the through-hole and is connected with the toper pellet.

Still further still include the installation piece, the installation piece is provided with the several, and several installation piece is arranged around the axial line of die ring to radial and mounting panel sliding connection along the die, the toper pellet wears to establish between several installation piece, and several die corresponds the detachable setting on several installation piece.

Still further, the one side that the several installation piece deviates from corresponding die lamella is with toper pellet side assorted inclined plane, and the several the one side that the installation piece deviates from corresponding die lamella all is provided with T type spout, the length direction of T type spout with the incline direction syntropy on inclined plane, toper pellet side is provided with the several T type slider that corresponds with installation piece quantity, and several T type slider circumference interval sets up in toper pellet side to wear to establish in corresponding T type spout.

Furthermore, the male die mounting plate is rotationally connected with the underframe, and when the male die mounting plate rotates, the male die mounting plate drives a plurality of die halves to rotate around the axis of the female die.

Still further, still include the slewing bearing, slewing bearing sets up on the chassis, the die sets up on slewing bearing's outer circle.

Still further still include rotary driving mechanism, rotary driving mechanism sets up on the chassis, and slewing bearing's outer lane sets up the tooth, be provided with on rotary driving mechanism's the output with the gear of tooth meshing.

Still further still include the mounting bracket, the mounting bracket is provided with the several, and several mounting bracket circumference interval sets up on slewing bearing's outer lane, and the radial position of several mounting bracket on slewing bearing outer lane is adjustable, the die can dismantle the connection on several mounting bracket.

Still further, be provided with annular mounting piece on the outer lane of slewing bearing, the several all be provided with waist shape hole on the mounting bracket, detachable fastener passes waist shape hole on the mounting bracket and is connected with annular mounting piece.

The utility model has the advantages that when in use, a workpiece is placed between the female die and the plurality of die petals, in the expansion of a single workpiece, the conical core block reciprocates along the axis of the workpiece, the plurality of die petals are driven to move towards the female die for extruding the workpiece for a plurality of times, the plurality of die petals can relatively rotate by taking the axis of the female die as the rotation center line while moving towards the female die for extruding the workpiece, the extrusion effect of the die petals can be ensured to be more uniformly carried out on the circumference of the workpiece, the consistency of the thickness and the accuracy of concentricity of the workpiece after the expansion are improved, the condition of needing secondary shaping is reduced, and the expansion efficiency and quality are improved. The distance between a plurality of die halves and the inner wall of the female die can be changed by controlling the moving stroke of the conical core block along the axis of the conical core block, and workpieces with different thickness requirements can be processed under the condition of ensuring the forming precision. The die can be used for enlarging the inner diameter and the outer diameter of the cylindrical part, and can be used by carrying dies and mold halves with different shapes, so that the cylindrical part with different shapes can be processed under the condition of ensuring the molding precision, and the application range is wide. Compared with a hydraulic expansion mode, the rotary expansion device realizes expansion of the workpiece by the movement of the die petals and the relative rotation between the die petals, the single reciprocation of the conical core block is one step, the single workpiece can be molded in multiple steps, the single-step deformation of the workpiece in the expansion process is small, the power requirement is small, larger tonnage hydraulic press equipment is not needed, and the cost of the power equipment can be saved.

Drawings

FIG. 1 is a schematic diagram of a rotary expansion device according to the present utility model.

Fig. 2 is an enlarged view of the utility model at a in fig. 1.

Fig. 3 is a schematic view of a longitudinal section of the rotary expansion device of the present utility model.

In the figure, 1, a bottom frame, 2, a female die, 3, a die, 4, a conical core block, 401, a T-shaped sliding block, 5, a male die mounting plate, 6, a linear driving mechanism, 601, a transmission connecting piece, 7, a mounting block, 701, a T-shaped sliding groove, 8, a slewing bearing, 801, teeth, 9, a mounting frame, 901, a kidney-shaped hole, 10, an annular mounting piece, 11, a fastening piece, 12 and a gear.

Detailed Description

As shown in fig. 1-3, the utility model provides a rotary expansion device, which comprises a bottom frame 1, a female die 2, split male dies and conical core blocks 4, wherein the bottom frame 1 is used for supporting the whole rotary expansion device, the female die 2 and the split male dies are arranged on the bottom frame 1, the split male dies comprise a plurality of die leaves 3, the die leaves 3 are arranged in the female die 2, the die leaves 3 are arranged in an axial line direction of the female die 2, and the die leaves 3 are arranged towards the inner side wall of the female die 2. The conical core block 4 can be conical or pyramid, and when the conical core block 4 is pyramid, the number of side lengths of the bottom surface is the same as the number of the mould petals 3. The conical core block 4 is arranged between the die petals 3 in a penetrating mode, the axis of the conical core block 4 and the axis of the female die 2 are in the same straight line, the conical core block 4 can move along the axis direction of the conical core block 4, when the conical core block 4 moves along the axis direction of the conical core block, the side face of the conical core block 4 pushes the die petals 3 to move towards the inner wall of the female die 2 along the radial direction of the female die 2, when the workpiece is expanded, the workpiece is positioned between the female die 2 and the die petals 3, and when the die petals 3 move towards the inner wall of the female die 2, the distance between the die petals 3 and the inner wall of the female die 2 is reduced, and the workpiece is extruded to expand. The female die 2 or the plurality of die segments 3 can rotate around the axis of the female die 2, so that the plurality of die segments 3 can move towards the female die 2 to squeeze a workpiece, and meanwhile, relative rotation taking the axis of the female die 2 as a rotation center line can be arranged between the female die 2 and the plurality of die segments 3. Wherein, the bottom of die 2 transversely is provided with round boss, can play the effect of supporting to the work piece, and the position of boss should be less than the bottom of die lamella 3, can not interfere the removal of die lamella 3.

When the rotary expansion device provided by the utility model is used, a workpiece is placed between the female die 2 and the plurality of die petals 3, in the expansion of a single workpiece, the conical core block 4 reciprocates along the axis of the workpiece, the plurality of die petals 3 are driven to move towards the female die 2 for extruding the workpiece at the same time for multiple times, the plurality of die petals 3 move towards the female die 2 for extruding the workpiece, and meanwhile, the female die 2 and the plurality of die petals 3 can relatively rotate by taking the axis of the female die 2 as a rotation center line, so that the extrusion effect of the die petals 3 can be more uniformly ensured in the circumferential direction of the workpiece, the consistency of the thickness and the accuracy of concentricity of the workpiece after expansion are improved, the condition of secondary shaping is reduced, and the expansion efficiency and quality are improved. The distance between a plurality of die segments 3 and the inner wall of the female die 2 can be changed by controlling the moving stroke of the conical core block 4 along the axis of the conical core block, and workpieces with different thickness requirements can be processed under the condition of ensuring the forming precision. The die can be used for expanding the inner diameter and the outer diameter of the cylindrical part, and can be used by carrying the dies 2 and the die halves 3 with different shapes, so that the cylindrical part with different shapes can be processed under the condition of ensuring the molding precision, and the application range is wide. Compared with a hydraulic expansion mode, the rotary expansion device realizes the expansion of the workpiece by the movement of the die petals 3 and the relative rotation between the die petals 2 and the die petals 3, the single reciprocating motion of the conical core block 4 is one step, the single workpiece can be molded in multiple steps, the single-step deformation of the workpiece in the expansion process is small, the requirement on power is small, larger tonnage hydraulic equipment is not needed, and the cost of the power equipment can be saved.

The utility model further comprises a male die mounting plate 5, wherein the male die mounting plate 5 is arranged on the underframe 1, a plurality of die segments 3 are arranged on the male die mounting plate 5, and the die segments 3 are in sliding fit with the male die mounting plate 5 along the radial direction of the female die 2. By arranging the male die mounting plate 5, the installation of all the die segments 3 can be facilitated, and the movement of all the die segments 3 along a specified path can be ensured, and in the embodiment of the rotation of the die segments 3, the arrangement mode can be convenient for driving the die segments 3 to synchronously rotate.

The utility model further comprises a linear driving mechanism 6, wherein the linear driving mechanism 6 is arranged below the underframe 1, through holes are formed in the underframe 1 and the male die mounting plate 5, a transmission connecting piece 601 is arranged at the output end of the linear driving mechanism 6, and the transmission connecting piece 601 penetrates through the through holes and is connected with the conical core block 4. The linear driving direction of the linear driving mechanism 6 is the same as the axis of the conical core block 4, and the linear driving mechanism 6 drives the conical core block 4 to reciprocate through the transmission connecting piece 601 when working. Under the condition that the interference of the die 3 and other components can be avoided, the driving linear mechanism is arranged below the underframe 1, the space above the device is not occupied, the overall height of the device is reduced, and the space requirement on the field is reduced. Wherein, the linear driving mechanism 6 is an air cylinder or an oil cylinder, and the transmission connecting piece 601 is a pull rod.

The utility model also comprises a plurality of mounting blocks 7, wherein the number of the mounting blocks 7 is the same as that of the mold halves 3. The several installation piece 7 is around the axis hoop of die 2 to radial and mounting panel sliding connection along die 2, several installation piece 7 be the hoop distribute on the mounting panel and with mounting panel sliding connection, and sliding direction is along the radial direction of die 2, wherein, sliding connection's concrete mode is, several installation piece 7 bottom all is provided with the spout, be provided with the several guide rail the same with installation piece 7 quantity on the mounting panel, several guide rail takes the axis of die 2 as the center to be radial distribution on the mounting panel, several installation piece 7 is through the spout and the corresponding guide rail sliding connection of bottom, and be one-to-one sliding connection between several installation piece 7 and the several guide rail, wherein, spout and guide rail are the T type, installation piece 7 can not be in vertical and guide rail separation. The conical core block 4 is arranged between the mounting blocks 7 in a penetrating manner, the die petals 3 are correspondingly and detachably arranged on the mounting blocks 7, namely, the die petals 3 are detachably connected with the mounting blocks 7 in a one-to-one manner. In this setting mode, under the circumstances that guarantee all mould lamella 3 can remove according to appointed route when toper pellet 4 removes, mould lamella 3 can dismantle alone to change mould lamella 3 of different shapes, the processing of the special-shaped cylindric piece of adaptation different shapes. The detachable connection mode of the single die 3 and the mounting block 7 is completed through a connecting plate and two bolts, specifically, as shown in fig. 2, the connecting plate is arranged at the tops of the die 3 and the mounting block 7, one bolt penetrates through the connecting plate to be connected with the die 3, and the other bolt penetrates through the connecting plate to be connected with the mounting block 7. The side surfaces of the mounting block 7 and the die 3 can be correspondingly provided with a limiting boss and a limiting groove, and when the die 3 is arranged on the mounting block 7, the limiting boss is inserted into the limiting groove to realize mounting and positioning.

The one side that the several installation piece 7 deviates from corresponding die lamella 3 is with toper pellet 4 side assorted inclined plane, and the several installation piece 7 deviates from the one side that corresponds die lamella 3 all is provided with T type spout 701, the length direction of T type spout 701 with the incline direction syntropy on inclined plane, toper pellet 4 side is provided with the several T type slider 401 that corresponds with installation piece 7 quantity, and several T type slider 401 circumference interval sets up in toper pellet 4 side to wear to establish in corresponding T type spout 701, the cooperation of several T type slider 401 and several T type spout 701 is one-to-one, and when toper pellet 4 was followed self axis reciprocating motion, T type slider 401 was slided in T type spout 701. In this setting mode, taking the view angle of fig. 3 as an example, when the conical core block 4 moves downwards, the plurality of mold halves 3 are pushed to move towards the female mold 2 by the plurality of mounting blocks 7, and when the conical core block 4 moves upwards for resetting, the plurality of mold halves 3 can be driven by the plurality of mounting blocks 7 to move for resetting, so that the arrangement of an additional resetting mechanism is omitted.

In one embodiment of the utility model, the female die 2 and the plurality of die segments 3 rotate relatively in such a way that the female die 2 is fixed and the plurality of die segments 3 rotate. In this embodiment, the male die mounting plate 5 is rotationally connected with the chassis 1, and the male die mounting plate 5 drives the plurality of die segments 3 to rotate around the axis of the female die 2 when rotating, and when the mounting block 7 is not in sliding connection with the conical core block 4 through the sliding block chute, the embodiment can be adopted in the case of only surface contact or point contact. The rotation driving mode of the male die mounting plate 5 may be determined according to actual requirements, for example, a driven gear is disposed at a through hole of the male die mounting plate 5, the transmission connecting piece 601 is disposed in the driven gear in a penetrating manner, a motor is disposed below the chassis 1, and a main gear meshed with the driven gear is disposed at an output end of the motor.

In another embodiment of the utility model, the die 2 and the plurality of die segments 3 are rotated relative to each other in such a way that the die 2 rotates. In this embodiment, the present utility model further includes a slewing bearing 8 and a rotation driving mechanism, the slewing bearing 8 is disposed on the chassis 1, an inner ring of the slewing bearing 8 is fixed to the chassis 1, an outer ring is rotatable relative to the chassis 1, and the female die 2 is disposed on the outer ring of the slewing bearing 8. The rotary driving mechanism is arranged on the underframe 1, the outer ring of the slewing bearing 8 is provided with teeth 801, and the output end of the rotary driving mechanism is provided with a gear 12 meshed with the teeth 801. The rotary driving mechanism is specifically a motor. This embodiment, on the basis of satisfying the relative rotation of the die 2 and the plurality of die segments 3, does not limit the manner of cooperation between the mounting block 7 and the tapered core block 4.

In the above embodiment of rotating the female die 2, the utility model further comprises a plurality of mounting frames 9, wherein the plurality of mounting frames 9 are circumferentially arranged on the outer ring of the slewing bearing 8 at intervals, the radial positions of the plurality of mounting frames 9 on the outer ring of the slewing bearing 8 are adjustable, and the female die 2 is detachably connected to the plurality of mounting frames 9. According to the arrangement mode, the radial positions of the plurality of mounting frames 9 on the outer ring of the slewing bearing 8 can be correspondingly adjusted according to different workpieces, and the corresponding female die 2 can be conveniently assembled so as to adapt to the machining of different-shape special-shaped cylindrical parts.

The specific setting mode of mounting bracket 9 is, be provided with annular mounting member 10 on the outer lane of slewing bearing 8, for example the ring flange, the several all be provided with waist shape hole 901 on the mounting bracket 9, the length direction in waist shape hole 901 is the same direction with the radial direction of die 2, and detachable fastener 11 passes waist shape hole 901 on the mounting bracket 9 and is connected with annular mounting member 10. The fastening means 11 are in particular bolts which are screwed to the annular mounting member 10.

In the embodiment of the female die 2 rotation, the working principle of the utility model is that a workpiece is placed between the female die 2 and a plurality of die segments 3, the female die 2 is driven to rotate by a rotary driving mechanism, and the conical core block 4 is driven to move up and down by a linear driving mechanism 6, so that the die segments 3 do reciprocating motion towards the female die 2, and the workpiece is continuously extruded, so that the workpiece is molded into a required shape. Under the relative rotation between the female die 2 and the die petals 3 and the friction force between the workpiece and the female die 2, the die petals 3 and the workpiece can also rotate relatively in the expansion process, so that the circumferential direction of the workpiece can be more uniformly extruded by the die petals 3, and the forming precision is improved.

It will be appreciated by persons skilled in the art that the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the application is limited to these examples, that combinations of technical features in the above embodiments or in different embodiments may also be implemented in any order, and that many other variations of the different aspects of one or more embodiments of the application as described above exist within the spirit of the application, which are not provided in detail for the sake of brevity.

One or more embodiments of the present application are intended to embrace all such alternatives, modifications and variations as fall within the broad scope of the present application. Accordingly, any omissions, modifications, equivalents, improvements and others which are within the spirit and principles of the one or more embodiments of the application are intended to be included within the scope of the application.

Claims

1. The utility model provides a rotatory type device that rises, characterized by includes chassis (1), die (2), split terrace die and toper pellet (4), die (2) and split terrace die all set up on chassis (1), split terrace die includes several die (3), and several die (3) all are arranged in die (2), toper pellet (4) wears to establish between several die (3), and the axis of toper pellet (4) and the axis of die (2) are on same straight line, toper pellet (4) can follow self axis direction and remove to promote the inner wall removal of several die (3) towards die (2), and die (2) or several die (3) can rotate around the axis of die (2).

2. A rotary expansion device as claimed in claim 1, further comprising a punch mounting plate (5), wherein the punch mounting plate (5) is arranged on the chassis (1), wherein the plurality of die segments (3) are arranged on the punch mounting plate (5), and wherein the plurality of die segments (3) are slidably engaged with the punch mounting plate (5) in the radial direction of the die (2).

3. A rotary expansion device as claimed in claim 2, further comprising a linear driving mechanism (6), wherein the linear driving mechanism (6) is arranged below the chassis (1), through holes are formed in the chassis (1) and the male die mounting plate (5), a transmission connecting piece (601) is arranged at the output end of the linear driving mechanism (6), and the transmission connecting piece (601) penetrates through the through holes to be connected with the conical core block (4).

4. A rotary expansion device as claimed in claim 2 or 3, further comprising a plurality of mounting blocks (7), wherein the plurality of mounting blocks (7) are circumferentially arranged around the axis of the die (2) and slidably connected with the mounting plate along the radial direction of the die (2), the conical core block (4) is arranged between the plurality of mounting blocks (7) in a penetrating manner, and the plurality of die segments (3) are correspondingly detachably arranged on the plurality of mounting blocks (7).

5. The rotary expanding device according to claim 4, wherein one surface of the plurality of mounting blocks (7) deviating from the corresponding die segments (3) is an inclined surface matched with the side surface of the conical core block (4), the surface of the plurality of mounting blocks (7) deviating from the corresponding die segments (3) is provided with T-shaped sliding grooves (701), the length direction of the T-shaped sliding grooves (701) is in the same direction as the inclined direction of the inclined surface, the side surface of the conical core block (4) is provided with a plurality of T-shaped sliding blocks (401) corresponding to the number of the mounting blocks (7), and the plurality of T-shaped sliding blocks (401) are circumferentially arranged on the side surface of the conical core block (4) at intervals and penetrate through the corresponding T-shaped sliding grooves (701).

6. A rotary expansion device according to claim 2 or 3, characterized in that the male die mounting plate (5) is in rotary connection with the chassis (1), and the male die mounting plate (5) drives the die halves (3) to rotate around the axis of the female die (2) when rotating.

7. A rotary expansion device according to any of claims 1-3, 5, further comprising a slewing bearing (8), said slewing bearing (8) being arranged on the undercarriage (1), said female die (2) being arranged on an outer ring of the slewing bearing (8).

8. A rotary expansion device as claimed in claim 7, characterized in that the rotary expansion device further comprises a rotary driving mechanism, wherein the rotary driving mechanism is arranged on the underframe (1), the outer ring of the slewing bearing (8) is provided with teeth (801), and the output end of the rotary driving mechanism is provided with a gear (12) meshed with the teeth (801).

9. The rotary expanding device according to claim 7, further comprising a plurality of mounting frames (9), wherein the plurality of mounting frames (9) are circumferentially arranged on the outer ring of the slewing bearing (8) at intervals, the radial positions of the plurality of mounting frames (9) on the outer ring of the slewing bearing (8) are adjustable, and the female die (2) is detachably connected to the plurality of mounting frames (9).

10. A rotary expansion device as claimed in claim 9, characterized in that the outer ring of the slewing bearing (8) is provided with an annular mounting member (10), a plurality of mounting frames (9) are provided with kidney-shaped holes (901), and detachable fasteners (11) penetrate through the kidney-shaped holes (901) in the mounting frames (9) to be connected with the annular mounting member (10).