CN117463954A - Hub die adjusting device and hub die applied by same - Google Patents
Hub die adjusting device and hub die applied by same Download PDFInfo
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- CN117463954A CN117463954A CN202311356363.4A CN202311356363A CN117463954A CN 117463954 A CN117463954 A CN 117463954A CN 202311356363 A CN202311356363 A CN 202311356363A CN 117463954 A CN117463954 A CN 117463954A
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- lower die
- adjusting sleeve
- die
- central shaft
- hub
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- 238000003825 pressing Methods 0.000 claims description 44
- 238000005266 casting Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The hub die adjusting device comprises a lower die and a lower die mounting plate, wherein the lower die is connected to the lower die mounting plate; the novel hub wheel is characterized in that a central shaft is arranged at the bottom of the lower die, a bottom hole through which the central shaft can pass is formed in the lower die mounting plate, the novel hub wheel further comprises a first adjusting sleeve and a second adjusting sleeve, external threads are arranged on the central shaft, internal threaded holes are formed in the first adjusting sleeve and the second adjusting sleeve, the first adjusting sleeve and the second adjusting sleeve are movably connected to the central shaft in a screwed mode, the first adjusting sleeve and the second adjusting sleeve are respectively arranged on the upper side and the lower side of the lower die mounting plate, the first adjusting sleeve or the second adjusting sleeve can be connected with the lower die mounting plate through adjusting the upper position and the lower position of the first adjusting sleeve or the second adjusting sleeve so as to drive the central shaft to move up and down, the central shaft further enables the middle area of the lower die to generate upward protruding or downward concave pre-deformation, the deformation of the hub wheel is counteracted by the pre-deformation of the die during hub forming, and the yield of hub products is improved.
Description
Technical Field
The utility model relates to the technical field related to mould structures, in particular to a lower mould adjusting device of a hub mould.
Background
The casting processing mode is one of the common forming means of hub products, the processing precision of the hub products is mainly influenced by the processing precision of hub casting dies and the deformation of the dies in the casting processing process, wherein the processing precision of the dies can be improved by processing by using high-precision processing equipment, and the deformation of the dies in casting is related to the materials, temperature gradients, constraint conditions and the like of the dies. The influence of the mold deformation on the size of the hub product is mainly expressed in axial deformation, and when the axial deformation of the hub product exceeds a set tolerance, the hub product is scrapped. In order to control the deformation of the casting mold, the applicant has applied for related patent technology in early stage, and chinese patent publication No. CN210548002U discloses a lower mold locking structure and a hub mold applied thereto, including a lower mold for enclosing a workpiece manufacturing cavity and a lower mold mounting plate for fixing the lower mold; the lower die is provided with a melt inlet which is communicated with a workpiece manufacturing cavity and used for conveying melt for the workpiece manufacturing cavity, the outer edge end of the lower die is supported on a lower die mounting plate, an upper connecting area is further arranged on the lower die and located between the melt inlet and the outer edge end of the lower die, the lower die mounting plate is provided with a lower connecting area, a locking connecting mechanism is arranged between the upper connecting area and the lower connecting area, and the locking connecting mechanism is used for locking and connecting the upper connecting area of the lower die to the lower connecting area of the lower die mounting plate. Specifically, the locking connection mechanism comprises a connection threaded hole, a connection unthreaded hole and a connection bolt, wherein the connection threaded hole is arranged on the upper connection area and is provided with an internal thread, the connection unthreaded hole is arranged on the lower connection area, and the connection bolt penetrates through the connection unthreaded hole to be locked on the connection threaded hole.
Therefore, the thermal stress formed in the lower die in the production process can be properly counteracted through the locking connecting mechanism, the upward rising deformation of the lower die under the action of the thermal stress is reduced, and the manufacturing dimensional accuracy of the hub product is improved to a certain extent. The lower die and the lower die mounting plate are fixedly connected together through the locking and connecting mechanism so as to reduce the up-down deformation of the lower die, but the temperature of the heated center of the lower die is higher in actual use, and the center part of the lower die can be raised upwards; the mold is cooled in the later casting stage, the stress is gradually released, the central part of the lower mold is recessed downwards, and the final molded hub product still has larger axial deformation in the middle area, so that the prior art can not well meet the actual use requirement.
Disclosure of Invention
In order to solve the problem of axial deformation of a hub product caused by deformation of a lower die in production of a hub die in the prior art, the utility model provides a hub die adjusting device, which comprises a lower die and a lower die mounting plate, wherein the lower die is connected to the lower die mounting plate; the bottom of lower mould is provided with the center pin, be provided with on the lower mould mounting panel and let the bottom opening that the center pin passed still includes first adjustment sleeve and second adjustment sleeve, be provided with the external screw thread on the center pin, first adjustment sleeve and second adjustment sleeve are last to be provided with the internal thread hole, first adjustment sleeve and second adjustment sleeve activity connect soon in on the center pin, just first adjustment sleeve, second adjustment sleeve arrange respectively in the upper and lower both sides of lower mould mounting panel can let through adjusting the upper and lower position of first adjustment sleeve or second adjustment sleeve first adjustment sleeve with thereby the lower mould mounting panel is connected the drive the center pin reciprocates, the center pin is then let the middle part area of lower mould produces protruding or concave predeformation.
The hub die is die equipment for casting an aluminum alloy hub, and the general hub die comprises an upper die, a lower die and a side die arranged between the upper die and the lower die, wherein the upper die, the lower die and the side die form a die cavity of the hub; in order to be convenient for fix and remove, the wheel hub mould still includes last mould mounting panel and lower mould mounting panel, go up mould, lower mould respectively fixed connection in go up on mould mounting panel, the lower mould mounting panel. The molten aluminum alloy is very high in temperature when the hub is cast, and the upper die, the lower die and the side dies need to be cooled to improve the machining efficiency, so that a certain cooling space is generally reserved between the lower die and the lower die mounting plate and between the upper die and the upper die mounting plate. Taking the lower die as an example, the lower die is in a reverse bowl shape and is provided with a lower die bottom wall and a lower die side wall, and the lower die side wall is connected to the lower die mounting plate through a nut.
The central shaft is a columnar member arranged in the middle of the bottom wall of the lower die, the position of the central shaft is opposite to the central shaft of the corresponding hub, and external threads are arranged on the central shaft so as to be convenient for connecting other members. In this embodiment, the central shaft is further provided with a feeding hole that is communicated with the hub cavity, and the high-temperature aluminum alloy can be injected into the cavity of the hub through the feeding hole.
The bottom hole is a through hole arranged on the lower die mounting plate, and the lower end of the central shaft on the lower die can pass through the bottom hole.
The first adjusting sleeve and the second adjusting sleeve are shaft sleeve-shaped components with connecting threaded holes and can be connected to the central shaft through threads, and the positions of the first adjusting sleeve and the second adjusting sleeve on the central shaft can be conveniently adjusted through rotation of the first adjusting sleeve and the second adjusting sleeve. In order to facilitate the rotation of the first adjusting sleeve and the second adjusting sleeve, a plurality of planes (2, 4 or 6 common connecting planes are generally arranged) connected with the wrench are arranged on the outer walls of the first adjusting sleeve and the second adjusting sleeve, so that the positions of the first adjusting sleeve and the second adjusting sleeve can be conveniently adjusted through the wrench.
The first adjusting sleeve and the second adjusting sleeve are respectively arranged on the upper side and the lower side of the lower die mounting plate, so that the first adjusting sleeve and the second adjusting sleeve can respectively prop against the upper side and the lower side of the lower die mounting plate, and accordingly acting force for tensioning or pushing the central shaft is formed. Taking the example that the first adjusting sleeve is arranged on the upper side of the lower die mounting plate and the second adjusting sleeve is arranged on the lower side of the lower die mounting plate, the following specific description is given to the adjusting mode: the first is the regulation mode of pushing upwards, firstly install first adjusting sleeve to the center pin is adjusted to the settlement position, again with lower mould erection joint in on the lower mould mounting panel, the installation in-process of lower mould and lower mould mounting panel, the upside side of lower mould mounting panel earlier with first adjusting sleeve laminating is connected, along with the lower mould with the continuous tightening of lower mould mounting panel, the lower mould mounting panel can give first adjusting sleeve is exerted the effort of pushing upwards first adjusting sleeve is under the effort of pushing upwards of lower mould mounting panel the center pin upwards moves, the center pin is then pushed the top the middle part region of lower mould produces bellied predeformation. The second is the downward tensioning adjusting mode, the first adjusting sleeve is firstly installed on the central shaft and adjusted to a set position, then the lower die is installed and connected on the lower die mounting plate, and a gap is reserved between the upper side surface of the lower die mounting plate and the first adjusting sleeve; and then the second adjusting sleeve is arranged below the lower side surface of the lower die mounting plate, the second adjusting sleeve is pressed against the lower side surface of the lower die mounting plate by continuously screwing the second adjusting sleeve, the central shaft is subjected to downward tensioning force of the second adjusting sleeve, and the central shaft can move downwards with the first adjusting sleeve and enable the middle area of the lower die to generate concave pre-deformation.
The middle area of the lower die refers to a wall body which is connected to the central shaft on the bottom wall of the lower die and is in a certain diameter range, the wall body corresponds to a wheel core and a wheel spoke of a wheel hub product, and the deformation of the middle area of the lower die can influence the axial size of the wheel hub product.
According to the technical scheme, compared with the prior art, the utility model has the beneficial technical effects that: firstly, the first adjusting sleeve or the second adjusting sleeve is contacted with the lower die mounting plate, namely the lower die and the lower die mounting plate are connected and fixed together through the first adjusting sleeve or the second adjusting sleeve, so that the middle area of the lower die is fixed and supported, the deformation of the lower die during hub forming is reduced, and the axial deformation of a hub product is reduced; and secondly, through adjusting the rotation number of the first adjusting sleeve or the second adjusting sleeve, the central shaft can be pushed or pulled tightly, so that the middle area of the lower die generates upward convex or downward concave pre-deformation, the deformation of the die during hub forming is counteracted through the pre-deformation of the die, the axial dimension of the hub after forming is within a tolerance range, and the improvement of the yield of hub products is facilitated.
In order to improve the convenience of installation, further technical scheme can also be that the lower mould mounting panel includes the clamp plate, the clamp plate can dismantle connect in the bottom hole of lower mould mounting panel, be provided with on the clamp plate and let the clamp plate through-hole that the center pin passed, thereby first adjusting sleeve or second adjusting sleeve can with the clamp plate is connected thereby the drive the center pin reciprocates. In the technical scheme, the aperture of the bottom hole of the lower die mounting plate is larger than the outer diameter of the first adjusting sleeve, namely the first adjusting sleeve can freely pass through the bottom hole of the lower die mounting plate; the aperture of the through hole of the pressing plate is required to be smaller than the outer diameter of the first adjusting sleeve on the basis of passing the central shaft, so that the first adjusting sleeve can be pressed on the upper pushing surface of the pressing plate after the pressing plate is mounted on the lower die mounting plate. After the pressing plate is added, the adjusting mode of the first adjusting sleeve is improved to a certain extent, and the specific adjusting mode is as follows: the first is the regulation mode of pushing upwards, let earlier the lower mould is installed and is fixed to on the lower mould mounting panel, the center pin passes downwards the bottom hole of lower mould mounting panel, again with first adjusting sleeve is installed the center pin and is adjusted to the settlement position, again with the clamp plate installation connect in on the bottom hole of lower mould mounting panel, the installation in-process of clamp plate and lower mould mounting panel, the last top surface of clamp plate earlier with first adjusting sleeve laminating is connected, along with the continuous tightening of clamp plate and lower mould mounting panel, the clamp plate can be given first adjusting sleeve exerts the top effort, under the top effort of clamp plate first adjusting sleeve is taken the center pin upwards movement, the center pin is then pushed the top the middle part area of lower mould produces the bellied predeformation. The second is the downward tensioning adjusting mode, the first adjusting sleeve is firstly installed on the central shaft and adjusted to a set position, then the pressing plate is installed and connected on the bottom hole of the lower die mounting plate, and a gap is reserved between the upper pushing surface of the pressing plate and the first adjusting sleeve; and then the second adjusting sleeve is arranged on the lower pushing surface of the pressing plate, and the second adjusting sleeve is continuously screwed, so that the second adjusting sleeve is pushed against the lower side surface of the lower die mounting plate, the central shaft is subjected to downward tensioning force of the second adjusting sleeve, and the central shaft can move downwards with the first adjusting sleeve and enable the middle area of the lower die to generate concave pre-deformation.
In order to reduce the movement of the central shaft of the lower die after the position of the central shaft is adjusted, the further technical scheme can be that after the first adjusting sleeve or the second adjusting sleeve is connected with the pressing plate and adjusted to a preset position, the second adjusting sleeve or the first adjusting sleeve is adjusted to be pressed to the other side of the pressing plate. The two sides of the pressing plate can be clamped by the first adjusting sleeve and the second adjusting sleeve, and meanwhile, the movement of the central shaft in the axial direction is effectively reduced, so that the stability of the axial dimension of the lower die is improved.
Furthermore, in order to enable the middle area of the lower die to generate larger deformation at normal temperature, the bottom wall of the lower die is also provided with a ring groove, and the specific arrangement mode of the ring groove at least comprises the following two or two combinations.
In a first arrangement, the lower die comprises a lower die bottom wall and a lower die side wall arranged along the edge of the lower die bottom wall, and the lower die is further provided with a ring groove arranged on the lower die bottom wall region between the lower die side wall and the central shaft.
The second arrangement mode, the lower die comprises a lower die bottom wall and a lower die side wall arranged along the edge of the lower die bottom wall, the lower die is further provided with a ring groove, and the ring groove is arranged at the junction of the lower die bottom wall and the lower die side wall and/or the junction of the lower die bottom wall and the central shaft.
According to a further technical scheme, a plurality of empty avoiding grooves are formed in the walls of the inner threaded holes of the first adjusting sleeve and the second adjusting sleeve. Through setting up keep away the empty groove has two effects, firstly can reduce the area of contact of first adjusting sleeve and second adjusting sleeve, second can let the heat follow keep away the empty groove and discharge, be favorable to the heat dissipation of mould.
The hub die with the lower die locking structure comprises a lower die, an upper die arranged on the lower die and a side die arranged between the upper die and the lower die, wherein the lower die, the upper die and the side die enclose a cavity of a hub.
Since the utility model has the above-mentioned features and advantages, it can be applied to the hub die adjusting device and the hub die to which it is applied.
Drawings
FIG. 1 is a schematic axial side elevational view of the hub die;
FIG. 2 is a schematic cross-sectional view of the hub die in the front view;
FIG. 3 is a schematic exploded view of the hub die adjusting device;
FIG. 4 is a schematic view of a cross-sectional structure of the lower die in the front view, showing a state of downward tension;
FIG. 5 is a schematic view of a cross-sectional structure of the lower die in the front view, showing an upward pushing state;
FIG. 6 is a schematic axial side structural view of the first sleeve;
FIG. 7 is a schematic view of an axial side direction structure of the platen;
fig. 8 is a schematic diagram of a cross-sectional structure of the lower die in the front view, and shows the connection relationship between the first adjusting sleeve, the second adjusting sleeve and the lower die mounting plate.
Description of the embodiments
The hub die adjusting device and the structure of the hub die applying the hub die adjusting device are further described below with reference to the accompanying drawings.
The various implementation details disclosed below may be applied either selectively or in combination in one embodiment, even without direct functional association or co-ordination, except where explicitly stated to be equivalent or alternative embodiments.
As shown in fig. 1 and 2, the hub mold according to the present utility model includes the lower mold 11, an upper mold 12 located above the lower mold 11, and a side mold 13 disposed between the upper mold 12 and the lower mold 11, wherein the lower mold 11, the upper mold 12 and the side mold 13 enclose a cavity 10 of the hub. In order to facilitate the fixing and moving, the hub die further comprises an upper die mounting plate 15 and a lower die mounting plate 14, wherein the upper die 12 is fixedly connected to the upper die mounting plate 15, and the lower die 11 is fixedly connected to the lower die mounting plate 14. The molten aluminum alloy is very high in temperature during casting the hub, and the upper die 12, the lower die 11 and the side die 13 need to be cooled to improve the machining efficiency, so that a certain space is generally reserved between the lower die 11 and the lower die mounting plate 14 and between the upper die 12 and the upper die mounting plate 15 to facilitate the installation of the cooling device.
As shown in fig. 3 and 4, the lower die 11 has a shape of a reverse bowl, and has a lower die bottom wall 111 and a lower die side wall 112 disposed along an edge of the lower die bottom wall 111, and the lower die side wall 112 is connected to the lower die mounting plate 14 through a fixing nut. In order to overcome the problem of axial deformation of hub products caused by deformation of a lower die 11 in production of hub dies in the prior art, a central shaft 2 is arranged at the bottom of the lower die 11, a bottom hole 16 through which the central shaft 2 passes is formed in a lower die mounting plate 14, a first adjusting sleeve 3 and a second adjusting sleeve 4 are further included, external threads are arranged on the central shaft 2, internal threaded holes are formed in the first adjusting sleeve 3 and the second adjusting sleeve 4, the first adjusting sleeve 3 and the second adjusting sleeve 4 are movably screwed on the central shaft 2, the first adjusting sleeve 3 and the second adjusting sleeve 4 are respectively arranged on the upper side and the lower side of the lower die mounting plate 14, the first adjusting sleeve 3 or the second adjusting sleeve 4 can be connected with the lower die mounting plate 14 through adjustment, so that the central shaft 2 is driven to move up and down, and the central shaft 2 is further deformed in a convex or concave pre-deformation mode is generated in the middle area of the lower die 11. The arrangement has the advantages that: firstly, the first adjusting sleeve 3 or the second adjusting sleeve 4 is connected with the lower die mounting plate 14, namely the lower die 11 and the lower die mounting plate 14 are connected and fixed together through the first adjusting sleeve 3 or the second adjusting sleeve 4, so that the middle area of the lower die 11 is fixed and supported, the deformation of the lower die 11 during hub forming is reduced, and the axial deformation of a hub product is reduced; secondly, through adjusting the number of turns of first adjustment sleeve 3 or second adjustment sleeve 4, can push away or take up central shaft 2 thereby let the middle part region of lower mould 11 produces protruding or concave predeformation, offset the deflection of mould when the wheel hub shaping through the predeformation of mould, let the axial dimension after the wheel hub shaping be in the tolerance range, be favorable to improving the yield of wheel hub product.
The first adjusting sleeve 3 and the second adjusting sleeve 4 are sleeve-shaped members with connecting threaded holes, as shown in fig. 3 and 6, the first adjusting sleeve 3 and the second adjusting sleeve 4 can be connected to the central shaft 2 through threads, and the positions of the first adjusting sleeve 3 and the second adjusting sleeve 4 on the central shaft 2 can be adjusted by conveniently rotating the first adjusting sleeve 3 and the second adjusting sleeve 4 through a wrench or a sleeve. The central shaft 2 is also provided with a feeding hole 17 communicated with the hub cavity, and the high-temperature aluminum alloy can be injected into the hub cavity through the feeding hole 17.
Further, the first adjusting sleeve 3 and the second adjusting sleeve 4 are respectively disposed on the upper and lower sides of the lower die mounting plate 14, so that the first adjusting sleeve 3 and the second adjusting sleeve 4 can respectively lean against the upper and lower side wall surfaces of the lower die mounting plate 14, thereby forming a tensioning or pushing acting force on the central shaft 2 and the lower die 11. The two states of tensioning and pushing are described below: as shown in fig. 8, in the first adjustment mode, the first adjustment sleeve 3 is mounted on the central shaft 2 and adjusted to a set position, and then the lower die 11 is mounted and connected to the lower die mounting plate 14. In order to generate the upward pushing force, the setting position is that the lower surface of the first regulating sleeve 3 is slightly lower than the upper side surface 141 of the lower die mounting plate 14 mounted later. In the process of installing the lower die 11 and the lower die installing plate 14, the upper side surface 141 of the lower die installing plate 14 is firstly attached to the first adjusting sleeve 3, along with the continuous tightening of the lower die 11 and the lower die installing plate 14, the lower die installing plate 14 can apply an upward acting force to the first adjusting sleeve 3, the first adjusting sleeve 3 moves upwards with the central shaft 2 under the upward acting force of the lower die installing plate 14, and the central shaft 2 further pushes the middle area of the lower die 11 to generate upward convex pre-deformation, wherein the pre-deformation amount is H1. The second is a downward tightening adjusting mode, the first adjusting sleeve 3 is firstly installed on the central shaft 2 and adjusted to a set position, and then the lower die 11 is installed and connected on the lower die mounting plate 14. In order to enable the second adjusting bush 4 to pull down the center shaft 2, the setting position is such that the lower surface of the first adjusting bush 3 is slightly higher than the upper side surface 141 of the lower die mounting plate 14 to be mounted later. At this time, a gap is left between the upper side surface 141 of the lower die mounting plate 14 and the first adjusting sleeve 3; and then the second adjusting sleeve 4 is installed below the lower side surface 142 of the lower die mounting plate 14, the second adjusting sleeve 4 is pressed against the lower side surface 142 of the lower die mounting plate 14 by screwing, the second adjusting sleeve 4 is continuously screwed, the second adjusting sleeve 4 applies downward tension to the central shaft 2, and the central shaft 2 can move downwards with the first adjusting sleeve 3 and the middle area of the lower die 11 generates concave pre-deformation, and the pre-deformation is H2.
In order to improve the convenience of installing the lower die mounting plate 14 and the two adjusting sleeves, as shown in fig. 4, 5 and 7, the lower die mounting plate 14 includes a pressing plate 5, the pressing plate 5 is detachably connected to the bottom hole 16 of the lower die mounting plate 14, a pressing plate through hole 50 capable of allowing the central shaft 2 to pass through is provided on the pressing plate 5, and the first adjusting sleeve 3 or the second adjusting sleeve 4 can be connected with the pressing plate 5 to drive the central shaft 2 to move up and down. In this embodiment, the diameter of the bottom hole 16 of the lower die mounting plate 14 is greater than the outer diameter of the first adjusting sleeve 3, i.e., the first adjusting sleeve 3 can freely pass through the bottom hole 16 of the lower die mounting plate 14; the through hole of the pressing plate 5 is required to have a smaller diameter than the outer diameter of the first adjusting sleeve 3 on the basis of allowing the central shaft 2 to pass through, so that the first adjusting sleeve 3 can be pressed against the upper pushing surface 51 of the pressing plate 5 after the pressing plate 5 is mounted on the lower die mounting plate 14. This has the advantage that during installation, the lower die 11 can be firstly installed and fixed on the lower die mounting plate 14, and then the first adjusting sleeve 3, the pressing plate 5 and the second adjusting sleeve 4 are sequentially installed, and the connection mode facilitates the position adjustment of the first adjusting sleeve 3 and the second adjusting sleeve 4 and the connection installation of the lower die mounting plate 14.
After the pressing plate 5 is added, the adjusting mode of the first adjusting sleeve 3 is improved to a certain extent, and the specific adjusting mode is as follows: the first way is to push upward, as shown in fig. 5, to install and fix the lower die 11 on the lower die mounting plate 14, the central shaft 2 passes through the bottom hole 16 of the lower die mounting plate 14 downward, install the first adjusting sleeve 3 on the central shaft 2 and adjust to a set position, and then install and connect the pressing plate 5 on the bottom hole 16 of the lower die mounting plate 14. Similarly, in order to generate the pushing-up force, the setting position is that the lower surface of the first adjusting sleeve 3 is slightly lower than the pushing-up surface 51 of the pressing plate 5 mounted later. In the installation process of the pressing plate 5 and the lower die mounting plate 14, the upper pushing surface 51 of the pressing plate 5 is firstly in fit connection with the first adjusting sleeve 3, along with the continuous tightening of the pressing plate 5 and the lower die mounting plate 14, the pressing plate 5 can apply an upper pushing force to the first adjusting sleeve 3, the first adjusting sleeve 3 moves upwards with the central shaft 2 under the upper pushing force of the pressing plate 5, and the central shaft 2 further pushes the middle area of the lower die 11 to generate upper protruding pre-deformation, wherein the pre-deformation amount is H1. The second is a downward tightening adjustment, as shown in fig. 4, in which the first adjusting sleeve 3 is mounted on the central shaft 2 and adjusted to a set position, and then the pressing plate 5 is mounted and connected to the bottom hole 16 of the lower die mounting plate 14. In order to enable the second adjusting sleeve 4 to pull down the central shaft 2, the setting position is that the lower surface of the first adjusting sleeve 3 is slightly higher than the upper pushing surface 51 of the pressing plate 5 arranged at the back. At this time, a gap is left between the upper pushing surface 51 of the pressing plate 5 and the first adjusting sleeve 3; and then the second adjusting sleeve 4 is installed on the lower pushing surface 52 of the pressing plate 5, and the second adjusting sleeve 4 is continuously screwed, so that the second adjusting sleeve 4 is pushed against the lower side surface 142 of the lower die mounting plate 14, the central shaft 2 is subjected to downward tensioning force of the second adjusting sleeve 4, the central shaft 4 can move downwards with the first adjusting sleeve 3, the middle area of the lower die 11 is deformed downwards, and the pre-deformation amount is H2.
Further, the connection modes of the pressing plate 5 and the lower die mounting plate 14 are also various, wherein one connection mode is, as shown in fig. 4 and 5, connected and fixed by a plurality of screws; alternatively, an internal thread is disposed in the bottom hole 16 of the lower die mounting plate 14, the pressing plate 5 is cylindrical and has an external thread, and the pressing plate 5 and the lower die mounting plate 14 are connected together by threads. The pressing plate 5 can be provided with the capability of up-and-down adjustment in a threaded connection manner, so that the first adjusting sleeve 3 firstly mounted on the central shaft 2 does not need to be accurately adjusted to a set position up and down under the condition of pushing or tensioning, but only needs to be adjusted to a fixed position, and then the pushing or separating state can be realized by adjusting the position of the pressing plate 5, which is quite convenient.
Further, the first adjusting sleeve 3 or the second adjusting sleeve 4 may be connected to the pressing plate 5 and adjusted to a preset position, and then the second adjusting sleeve 4 or the first adjusting sleeve 3 is adjusted to be pressed to the other side of the pressing plate 5. In this way, the central shaft 2 of the lower die 11 can be firmly connected to the lower die mounting plate 14 by two adjusting sleeves, and the movement of the central shaft 2 in the axial direction is greatly reduced.
Further, in order to enable the middle area of the lower die 11 to generate larger deformation at normal temperature, a ring groove 6 is further provided on the bottom wall of the lower die 11, and the specific arrangement mode of the ring groove 6 at least includes the following two or two combinations.
In a first arrangement, the lower die 11 includes a lower die bottom wall 111 and a lower die side wall 112 disposed along an edge of the lower die bottom wall 111, and the lower die 11 is further provided with a ring groove 6, and the ring groove 6 is disposed on the bottom wall region between the lower die bottom wall 111 and the central shaft 2.
In a second arrangement, as shown in fig. 4 and 5, the lower die 11 includes a lower die bottom wall 111 and a lower die side wall 112 disposed along an edge of the lower die bottom wall 111, the lower die 11 is further provided with a ring groove 6, and the ring groove 6 is disposed at a junction between the lower die bottom wall 111 and the lower die side wall 112 and/or a junction between the lower die bottom wall 111 and the bottom wall and the central shaft 2.
According to a further technical scheme, a plurality of empty avoiding grooves 7 are formed in the walls of the inner threaded holes of the first adjusting sleeve 3 and the second adjusting sleeve 4. Through setting up keep away the empty groove 7 has two effects, firstly can reduce the area of contact of first adjusting collar 3 with second adjusting collar 4, second can let the heat follow keep away empty groove 7 and discharge, be favorable to the heat dissipation of mould.
Claims (8)
1. The hub die adjusting device comprises a lower die and a lower die mounting plate, wherein the lower die is connected to the lower die mounting plate; the lower die is characterized in that a central shaft is arranged at the bottom of the lower die, a bottom hole capable of allowing the central shaft to pass through is formed in the lower die mounting plate, the lower die further comprises a first adjusting sleeve and a second adjusting sleeve, external threads are arranged on the central shaft, internal threaded holes are formed in the first adjusting sleeve and the second adjusting sleeve, the first adjusting sleeve and the second adjusting sleeve are movably connected to the central shaft in a screwed mode, the first adjusting sleeve and the second adjusting sleeve are respectively arranged on the upper side and the lower side of the lower die mounting plate, the first adjusting sleeve or the second adjusting sleeve can be connected with the lower die mounting plate through adjusting the upper position and the lower position of the first adjusting sleeve or the second adjusting sleeve so as to drive the central shaft to move up and down, and the central shaft further enables the middle area of the lower die to generate upward convex or downward concave pre-deformation.
2. The hub die adjusting device as defined in claim 1, wherein the lower die mounting plate includes a pressing plate detachably connected to a bottom hole of the lower die mounting plate, a pressing plate through hole through which the center shaft can pass is provided on the pressing plate, and the first adjusting sleeve or the second adjusting sleeve can be connected to the pressing plate to drive the center shaft to move up and down.
3. The hub die adjusting device as claimed in claim 2, wherein the second adjusting sleeve or the first adjusting sleeve is adjusted to be pressed to the other side of the pressing plate after the first adjusting sleeve or the second adjusting sleeve is connected to the pressing plate and adjusted to a preset position.
4. A hub die adjusting device as defined in claim 1, 2 or 3, wherein the lower die includes a lower die bottom wall and a lower die side wall disposed along an edge of the lower die bottom wall, and an annular groove is further provided on the lower die, the annular groove being disposed on the lower die bottom wall region between the lower die side wall and the central shaft.
5. A hub die adjusting device as claimed in claim 1, 2 or 3, wherein the lower die comprises a lower die bottom wall and a lower die side wall arranged along an edge of the lower die bottom wall, and an annular groove is further provided on the lower die, the annular groove being arranged at a junction of the lower die bottom wall and the lower die side wall and/or at a junction of the lower die bottom wall and a central axis.
6. A hub die adjusting device as claimed in claim 1, 2 or 3 wherein the lower die is provided with a feed hole, the feed hole being provided on the central shaft.
7. The hub die adjusting device according to claim 6, wherein a plurality of clearance grooves are formed in the walls of the inner threaded holes of the first adjusting sleeve and the second adjusting sleeve.
8. A hub die using the lower die locking structure according to any one of claims 1 to 7, comprising the lower die, an upper die located above the lower die, and a side die disposed between the upper die and the lower die, the upper die, and the side die enclosing a cavity of a hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311356363.4A CN117463954A (en) | 2023-10-19 | 2023-10-19 | Hub die adjusting device and hub die applied by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311356363.4A CN117463954A (en) | 2023-10-19 | 2023-10-19 | Hub die adjusting device and hub die applied by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117463954A true CN117463954A (en) | 2024-01-30 |
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ID=89635604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311356363.4A Pending CN117463954A (en) | 2023-10-19 | 2023-10-19 | Hub die adjusting device and hub die applied by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117463954A (en) |
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2023
- 2023-10-19 CN CN202311356363.4A patent/CN117463954A/en active Pending
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