CN117600401A - Rim wax pattern forming device for precision casting of automobile rim - Google Patents
Rim wax pattern forming device for precision casting of automobile rim Download PDFInfo
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- CN117600401A CN117600401A CN202410092752.9A CN202410092752A CN117600401A CN 117600401 A CN117600401 A CN 117600401A CN 202410092752 A CN202410092752 A CN 202410092752A CN 117600401 A CN117600401 A CN 117600401A
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- 238000005495 investment casting Methods 0.000 title claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 199
- 239000007924 injection Substances 0.000 claims abstract description 199
- 230000007306 turnover Effects 0.000 claims abstract description 71
- 230000009471 action Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims description 103
- 238000003825 pressing Methods 0.000 claims description 41
- 230000000712 assembly Effects 0.000 claims description 17
- 238000000429 assembly Methods 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 238000005266 casting Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 10
- 238000004512 die casting Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 206010050031 Muscle strain Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a rim wax pattern forming device for precision casting of an automobile rim, which relates to the technical field of casting modeling and comprises a base serving as a frame, a rim wax pattern forming bin, a connecting frame, a linear mechanism, an injection assembly and a turnover assembly, wherein the rim wax pattern forming bin is installed and fixed on the base, and the injection assembly and the turnover assembly are arranged in one-to-one correspondence with a straight groove structure of the rim wax pattern forming bin. The linear mechanism, the injection assembly and the turnover assembly cooperatively act to enable the injection assembly to inject enough low-temperature wax into the straight groove structure of the rim wax pattern forming bin in a posture facing the straight groove structure of the rim wax pattern forming bin, and then automatically turnover to a posture facing the annular groove structure of the rim wax pattern forming bin under the action of the turnover assembly to continuously inject the low-temperature wax into the annular groove structure; and each supporting rod of the rim wax mould is synchronously molded in each straight groove structure respectively, and the annular groove structure is molded by multi-point injection, so that the production efficiency is effectively improved.
Description
Technical Field
The invention relates to the technical field of casting modeling, in particular to a rim wax pattern molding injection device for investment precision casting of an automobile rim.
Background
Automobile rims are important load components of automobiles, and the quality of the automobile rims directly affects the handling performance, the driving safety and the energy consumption of the automobile.
In the prior art, an automobile rim is usually formed by taking aluminum or magnesium alloy as a raw material and adopting a pressure casting process. The production efficiency of the pressure casting is high, the realization difficulty of automatic production is low, and the method can better adapt to the requirements of actual production; but the problems of high cost of die casting equipment and dies and long manufacturing period of die casting type exist at the same time, the die casting type die casting method is more suitable for mass production of automobile rims, and the performance of the die casting type die casting device in small mass production or exploratory trial production of the automobile rims is not ideal.
In small-scale production or exploratory trial production of automobile rims, investment casting is relatively more widely used. The investment casting process features that the pattern is made of fusible material, the surface of the pattern is coated with refractory material to form shell, and the pattern is heated to form the mould. The investment casting die is simple to manufacture, low in production cost, and can be used without machining, the dimensional accuracy can reach CT 4-6 level, the surface roughness can reach Ra 0.8-2.2 mu m, and the investment casting die has great advantages in small-batch production or exploratory trial production of automobile rims.
The rim wax mould is one of the most common patterns in the precision investment casting of the automobile rim, takes wax as a raw material and is molded by using a low-temperature molding injection device. The forming bin of the rim wax mould comprises a ring groove structure positioned at the periphery and a plurality of straight groove structures which are circumferentially and uniformly distributed in the ring groove structure and are radially arranged; the outer end of each straight groove structure is communicated with the top of the inner side of the annular groove structure, and each straight groove structure is arranged in an inclined posture that the height of the outer end of each straight groove structure is gradually decreased from the outer end of each straight groove structure to the inner end of each straight groove structure. Because the communication position of the straight groove structure and the annular groove structure is positioned at the high point in the two structures, the flow path length of the liquid wax is limited, the rim wax mould cannot be molded in a one-time injection mode in actual production, a worker needs to hold the pressing gun, injection molding of the rim wax mould at each straight groove structure is finished one by one, and then injection molding of the rim wax mould at the annular groove structure is carried out. The injection molding process is complex in operation and low in production efficiency, and meanwhile, workers need to exert force continuously by the muscles at the bottom of the thumb, so that muscle strain is easy to generate, and the health of the workers is not facilitated.
By prior art search, there are the following known technical solutions:
prior art 1:
application number: CN201710096500.3, filing date: 2017/02/22, publication (bulletin) day: 2017/06/20.
The prior art 1 relates to a truck hydraulic retarder impeller wax matrix processing system, and has the advantages that: when the rotary mechanism is additionally arranged, the movable forming seat is driven to carry out demoulding by the rotary mechanism, and the movable forming seat is driven to rotate in the ascending process, so that the formed wax mould can be conveniently separated from the forming mould, and the damage to the wax mould is avoided.
However, the wax injection unit of prior art 1 includes an upper nozzle and a side nozzle, and the flow path is long when injecting wax, and the problem of incomplete parts is easily caused at a plurality of blades of the molded impeller wax pattern.
Prior art 2:
application number: CN202220584006.8, filing date: 2022/03/17, publication (date): 2022/10/04.
The prior art 2 provides a penetrate wax machine for wax matrix manufacturing, utilize the high temperature to fully melt the wax body, avoid inhomogeneous local difference in temperature that leads to, the insulation can both keep warm the wax body in the pipeline, still have the cooling function concurrently simultaneously, the snakelike crooked setting of conduction wax pipe in the insulation can, utilize water to keep warm, the temperature is invariable in the whole insulation can, the homogeneity of wax body temperature in the conduction wax pipe has been guaranteed as far as possible, the wax temperature of once injecting wax matrix shaping quantity is unanimous, the heat is unanimous in the cooling process, wax spare dimensional change is little after the shaping, improve wax matrix precision.
However, in the prior art 2, only one movable wax mould injection gun is arranged and fixed on the frame through the mounting assembly, and when the wax mould with a complex shape is actually produced, the injection gun is required to be moved for multiple times for multiple injections, so that the process operation is complicated and the production efficiency is low.
Through the above search, the above technical scheme does not affect the novelty of the invention; and the above prior art combinations do not destroy the inventive aspects of the present invention.
Disclosure of Invention
The invention provides a rim wax pattern forming device for precision casting of an automobile rim, which aims to avoid the defects of the prior art.
The invention adopts the following technical scheme for solving the technical problems: the rim wax pattern forming device for the automobile rim precision casting comprises a base and a rim wax pattern forming bin fixedly arranged on the base, wherein the rim wax pattern forming bin comprises a ring groove structure and straight groove structures which are arranged in the ring groove structure along the radial direction, the outer ends of the straight groove structures are fixedly connected and communicated with the ring groove structure at the top of the inner side of the ring groove structure, and a connecting frame, a linear mechanism, an injection assembly and a turnover assembly are further arranged;
the injection assembly and the turnover assembly are arranged in one-to-one correspondence with the straight groove structure, the linear mechanism is fixedly arranged above the injection assembly and the turnover assembly through the connecting frame, the output end of the linear mechanism drives the injection assembly and the turnover assembly to act cooperatively, so that the injection assembly firstly injects enough low-temperature wax into the straight groove structure in a posture of facing the straight groove structure, each supporting rod of the rim wax mold is synchronously molded in each straight groove structure, then the injection assembly is turned over to face the posture of the ring groove structure under the action of the turnover assembly, the low-temperature wax is continuously injected into the ring groove structure, and the rim of the rim wax mold is molded in a multi-point injection manner in the ring groove structure.
Further, the linear mechanism comprises a driving machine, an injection press block and a turnover press block, wherein the turnover press block and the injection press block are sequentially arranged and fixed on the output end of the driving machine from top to bottom;
the injection assembly comprises a wax bin, an injection piston and an injection tube; the injection piston is inserted into the cavity in a matched manner from an opening at the upper end of the wax bin, and a sliding pair along a vertical direction is formed between the injection piston and the wax bin; the injection tube is of a tubular structure which is obliquely arranged downwards along the radial direction of the ring groove structure from inside to outside, the inner end of the injection tube is bent upwards, is fixedly connected and communicated with the opening at the lower end of the wax bin, and the outer end of the injection tube is bent downwards;
the overturning assembly comprises a fixed bracket, a movable bracket, an overturning shaft and an overturning spring; the fixed support and the base are fixedly arranged, the movable support is mounted on the fixed support in a sliding fit manner, and a sliding pair along the vertical direction is formed between the fixed support and the base; the turnover spring is arranged between the fixed bracket and the movable bracket in a posture that the axis is vertical, and two ends of the turnover spring are respectively connected and fixed with the fixed bracket and the movable bracket; the movable support is in limit installation with the lower end of the wax bin, so that a limit structure for limiting the wax bin to move downwards relative to the movable support is formed; the axis of the turnover shaft is positioned in a horizontal plane, the middle part of the injection tube is rotatably mounted on the turnover shaft, and a revolute pair supporting the end part of the injection tube to outwards or inwards turn is formed between the two;
the outer end of the injection tube faces the outer end of the corresponding straight groove structure, the injection pressing block is driven by the driving machine to move downwards to press the corresponding injection piston, so that enough low-temperature wax in the wax bin is injected into the straight groove structure, then the overturning pressing block is driven to move downwards to press the movable support, and the movable support is driven to move downwards and then outwards overturned to face the annular groove structure;
the movable support moves downwards relative to the fixed support under the action of the downward pressing of the turnover pressing block, so that the turnover spring deforms, and moves upwards relative to the fixed support under the action of the elasticity of the turnover spring when the downward pressing action of the turnover pressing block is lost, so that the injection tube is driven to reset.
Further, the injection assembly is also provided with an injection spring;
the upper end of the injection piston and the lower end of the wax bin are respectively in an upper limit edge structure and a lower limit edge structure which are radially outwards expanded, the injection spring is sleeved and installed outside the wax bin and the injection piston, and the upper end and the lower end of the injection spring are respectively connected and fixed to the bottom of the upper limit edge structure and the top of the lower limit edge structure.
Further, the injection assembly is also provided with an injection connecting rod;
the injection connecting rod comprises a first connecting rod and a second connecting rod, the upper end of the first connecting rod is rotationally connected with the upper limit edge structure, the lower end of the first connecting rod is rotationally connected with the upper end of the second connecting rod, and the lower end of the second connecting rod is rotationally connected with the lower limit edge structure;
the first connecting rod, the second connecting rod, the upper limit edge structure and the lower limit edge structure are arranged in a tangential mode along the ring groove structure, and the total length of the first connecting rod and the second connecting rod is larger than the total length of the wax bin and the injection piston.
Further, the movable brackets of the overturning assemblies are connected to form a disc structure, and long round holes for the injection tubes to pass through are formed in the disc structure along the radial direction corresponding to the positions of the injection tubes;
the bottom of the wax bin is provided with a radial outward lower limit edge structure, and the lower limit edge structure is erected to the top of the disc structure to limit the downward movement of the wax bin relative to the movable support.
Further, convex stroke sliding limiting blocks are uniformly distributed on the outer edge of the disc structure, and grooves are correspondingly formed in the positions, corresponding to the sliding limiting blocks, on the fixed support in the vertical direction;
the sliding limiting block is installed in the groove in a sliding fit mode, and a sliding pair along the groove is formed between the sliding limiting block and the groove.
Further, the overturning spring is positioned in the groove and above the sliding limiting block, and two ends of the overturning spring are respectively connected and fixed with the upper end face of the groove and the top of the sliding limiting block;
or the overturning spring is positioned in the groove and below the sliding limiting block, and two ends of the overturning spring are respectively connected and fixed with the lower end face of the groove and the bottom of the sliding limiting block.
Further, the turning shafts of the turning assemblies are connected to form an integral annular shaft structure.
Further, an air blowing assembly is further arranged, and an air blowing pressing block is also arranged and fixed below the injection pressing block on the output end of the driving machine;
the air blowing assembly comprises an air blowing fixing frame, an air blowing movable frame, an air blowing spring, an air bag and an air tap;
the air blowing movable frame and the air blowing fixing frame are sequentially arranged above the outer ends of the injection pipes from top to bottom, and the air blowing fixing frame is fixedly arranged on the base;
at least two blowing springs are uniformly distributed between the blowing movable frame and the blowing fixed frame, and two ends of the blowing springs are respectively fixedly arranged at the bottom of the blowing movable frame and the top of the blowing fixed frame;
the top of the air bag is fixedly arranged at the bottom of the air blowing movable frame, the bottom of the air bag is fixedly arranged at the air blowing fixed frame, and an air outlet communicated with an air passage inlet correspondingly formed in the air blowing fixed frame is formed; the air tap is positioned at the outlet of the air channel, the inlet of the air tap is communicated with the outlet of the air channel, and the outlet faces the rim wax pattern forming bin.
Further, the connecting frame is provided with a linear sliding rail structure along the vertical direction, and the outer edge of the air blowing movable frame is correspondingly provided with a linear sliding block structure; the linear sliding block structure is connected with the linear sliding rail structure in a sliding fit manner, and a sliding pair along the vertical direction is formed between the linear sliding block structure and the linear sliding rail structure.
Furthermore, the air blowing fixing frame and the air blowing movable frame are of annular structures, and the air bags, the air passages and the air nozzles are arranged in one-to-one correspondence with the straight groove structures;
the number of the air blowing springs is consistent with that of the air bags, and the air blowing springs and the air bags are arranged in a staggered mode.
The invention provides a rim wax pattern forming device for precision casting of an automobile rim, which has the following beneficial effects:
1. the linear mechanism, the injection assembly and the turnover assembly cooperatively act to enable the injection assembly to inject enough low-temperature wax into the straight groove structure of the rim wax pattern forming bin in a posture facing the straight groove structure of the rim wax pattern forming bin, and then automatically turnover to a posture facing the annular groove structure of the rim wax pattern forming bin under the action of the turnover assembly to continuously inject the low-temperature wax into the annular groove structure; each support rod of the rim wax mould is synchronously molded in each straight groove structure respectively, and the annular groove structure is molded by multi-point injection, so that the production efficiency is effectively improved;
2. the invention realizes the integral molding of the rim wax mould under one-time manual operation without the need of a worker to frequently press the injection gun for many times, thereby greatly reducing the labor intensity of the worker, avoiding the strain of muscles at the bottom of the thumb of the worker and being beneficial to the health of the worker.
3. The air blowing assembly compresses each air bag by utilizing the downward movement of the air blowing movable frame under the action of the linear mechanism, generates air flow blown to the rim wax pattern forming bin by the air nozzle before low-temperature wax injection, eliminates a small amount of dust and sundries in the rim wax pattern forming bin, and is beneficial to ensuring the rim wax pattern forming quality.
4. The invention is provided with a plurality of blowing assemblies uniformly distributed along the circumferential direction, each blowing assembly synchronously generates air flow blown to the rim wax pattern forming bin by the air nozzle, and cooperatively generates atmospheric air flow for blowing out a small amount of dust and sundries in the rim wax pattern forming bin, thereby having good cleaning effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of a wax pattern forming bin for rims according to the present invention;
FIG. 3 is a schematic view of the semi-sectional structure of the present invention;
FIG. 4 is a schematic view of the injection assembly and the flipping assembly of the present invention;
FIG. 5 is a schematic view of the structure of the flipping assembly of the present invention;
FIG. 6 is a schematic view of a part of the structure of the blowing assembly of the present invention.
In the figure:
1. a base; 2. a connecting frame; 3. the device comprises a linear mechanism 31, a driving machine 32, an injection press block 33, a turnover press block 34 and an air blowing press block; 4. the rim wax pattern forming bin, 41, the ring groove structure, 42 and the straight groove structure; 5. the injection assembly 51, the wax bin 52, the injection piston 53, the injection tube 54, the injection spring 55 and the injection connecting rod; 6. the turnover assembly 61, the fixed bracket 62, the movable bracket 63, the turnover shaft 64, the turnover spring 65 and the groove; 7. the device comprises an air blowing assembly 71, an air blowing fixing frame 72, an air blowing movable frame 73, an air blowing spring 74, an air bag 75, an air passage 76 and an air tap.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, the structural relationship is as follows: the device comprises a base 1 and a rim wax pattern forming bin 4 fixedly arranged on the base, wherein the rim wax pattern forming bin 4 comprises a ring groove structure 41 and straight groove structures 42 which are radially arranged in the ring groove structure 41, and the outer ends of the straight groove structures 42 are fixedly connected and communicated with the ring groove structure 41 at the top of the inner side of the ring groove structure 41;
in actual setting, a mounting hole can be formed in the base 1, and the rim wax pattern forming bin 4 can be detachably clamped in the mounting hole and is fixedly mounted with the base 1 through a threaded connecting piece;
the device is also provided with a connecting frame 2, a linear mechanism 3, an injection assembly 5 and a turnover assembly 6;
the injection assembly 5 and the turnover assembly 6 are arranged in one-to-one correspondence with the straight groove structures 42, the linear mechanism 3 is fixedly arranged above the injection assembly 5 and the turnover assembly 6 through the connecting frame 2, the output end of the linear mechanism drives the injection assembly 5 and the turnover assembly 6 to act cooperatively, so that the injection assembly 5 firstly injects enough low-temperature wax into the straight groove structures 42 in a posture facing the straight groove structures 42, each support rod of the rim wax mould is synchronously molded in each straight groove structure 42, then the injection assembly 5 is turned to a posture facing the annular groove structure 41 under the action of the turnover assembly 6, the low-temperature wax is continuously injected into the annular groove structure 41, and the rim of the rim wax mould is molded in a multi-point injection manner in the annular groove structure 41.
Preferably, the linear mechanism 3 comprises a driving machine 31, an injection press block 32 and a turnover press block 33, wherein the turnover press block 33 and the injection press block 32 are sequentially arranged and fixed on the output end of the driving machine 31 from top to bottom;
in actual setting, the driving machine 31 may be a hydraulic cylinder;
the injection assembly 5 comprises a wax cartridge 51, an injection piston 52 and an injection tube 53; the wax bin 51 is of a vertical columnar structure with a hollow interior to form a containing cavity, the injection piston 52 is inserted into the containing cavity in a matched manner from an opening at the upper end of the wax bin 51, and a sliding pair along the vertical direction is formed between the injection piston and the wax bin 51; the injection tube 53 is of a tubular structure which is arranged downwards from inside to outside along the radial direction of the ring groove structure 41, the inner end of the injection tube is bent upwards, is fixedly connected and communicated with the opening at the lower end of the wax bin 51, and the outer end is bent downwards;
the turnover assembly 6 comprises a fixed bracket 61, a movable bracket 62, a turnover shaft 63 and a turnover spring 64; the fixed bracket 61 is fixedly arranged on the base 1, the movable bracket 62 is arranged on the fixed bracket 61 in a sliding fit manner, and a sliding pair along the vertical direction is formed between the fixed bracket 61 and the movable bracket 62; the turnover spring 64 is arranged between the fixed bracket 61 and the movable bracket 62 in a posture with a vertical axis, and two ends of the turnover spring are respectively connected and fixed with the fixed bracket 61 and the movable bracket 62; the movable bracket 62 is in limit installation with the lower end of the wax bin 51 to form a limit structure for limiting the wax bin 51 to move downwards relative to the movable bracket 62; the axis of the turnover shaft 63 is positioned in the horizontal plane, the middle part of the injection tube 53 is rotatably mounted on the turnover shaft 63, and a revolute pair for supporting the outward or inward turnover movement of the end part of the injection tube 53 is formed between the two;
the outer end of the injection tube 53 faces the outer end of the corresponding straight groove structure 42, and drives the injection pressing block 32 to move downwards to press the corresponding injection piston 52 at the driving machine 31, so that a sufficient amount of low-temperature wax in the wax bin 51 is injected into the straight groove structure 42, and then drives the overturning pressing block 33 to move downwards to press down the moving bracket 62, so that the moving bracket 62 is overturned outwards to face the annular groove structure 41 after moving downwards;
the movable bracket 62 moves downwards relative to the fixed bracket 61 under the action of the pressing down of the turning pressing block 33, so that the turning spring 64 deforms, and moves upwards relative to the fixed bracket 61 under the action of the elasticity of the turning spring 64 when the pressing down action of the turning pressing block 33 is lost, so as to drive the injection tube 53 to reset.
In actual setting, each parameter including stiffness coefficient and length of the turnover spring 64 and the travel difference of the injection press block 32 pressing down the injection piston 52 and the turnover press block 33 pressing down the movable support 62, which are determined by the setting positions of the injection press block 32, the turnover press block 33, the injection piston 52 and the movable support 62, should be reasonably determined, so as to ensure that before the injection press block 32 pressing down the injection piston 52 to inject enough low-temperature wax in the wax bin 51 into the corresponding straight groove structure 42, the outer end of the injection tube 53 is kept in a position area allowed by injecting the low-temperature wax into the corresponding straight groove structure 42; at the same time, the spring 64 to be turned should be compressed to the maximum deformation, the turning action of the injection tube 53 is finished, at this time, the outer end of the injection tube 53 is turned outwards to face the ring groove structure 41, and a sufficient amount of low-temperature wax is injected into the ring groove structure 41;
considering that the injection assembly 5 and the overturning assembly 6 are circumferentially provided with a plurality of parts according to actual needs, when the shape, the structure and the specific form of the injection assembly are designed, the movement interference among the injection assemblies 5 and the overturning assemblies 6 is not ensured.
Preferably, the injection assembly 5 is also provided with an injection spring 54;
the upper end of the injection piston 52 and the lower end of the wax bin 51 are respectively in an upper limit edge structure and a lower limit edge structure which are radially outwards stretched, the injection spring 54 is sleeved and arranged outside the wax bin 51 and the injection piston 52, and the upper end and the lower end of the injection spring are respectively connected and fixed to the bottom of the upper limit edge structure and the top of the lower limit edge structure.
When the injection pressing block 32 does not act on the injection piston 52 any more due to the arrangement of the injection spring 54, the injection piston 52 can move upwards and reset relative to the wax bin 51 under the action of the elastic force of the injection spring 54, so that a worker can conveniently detach the injection spring 54 to perform the material supplementing work of the wax material in the wax bin 51.
Preferably, the injection assembly 5 is also provided with an injection link 55;
the injection connecting rod 55 comprises a first connecting rod and a second connecting rod, the upper end of the first connecting rod is rotationally connected with the upper limit edge structure, the lower end of the first connecting rod is rotationally connected with the upper end of the second connecting rod, and the lower end of the second connecting rod is rotationally connected with the lower limit edge structure;
the first connecting rod, the second connecting rod, the upper limit edge structure and the lower limit edge structure are arranged in a tangential mode of the ring groove structure 41, and the total length of the first connecting rod and the second connecting rod is larger than the total length of the wax warehouse 51 and the injection piston 52.
In actual use, a worker can drive the injection piston 52 to move upwards relative to the wax bin by pressing the first connecting rod and the second connecting rod to approach the wax bin 51 until the injection piston 52 is separated from the upper end opening of the wax bin 51; the arrangement of the injection connecting rod 55 further improves the convenience of feeding materials into the wax warehouse 51 by staff, and meanwhile, the injection piston 52 can be prevented from falling off and being lost after being removed from the wax warehouse;
in actual setting, the outer surface of the wax bin 51 may be additionally provided with a thermostatic sheet according to actual needs including environmental temperature and other influencing factors, where the thermostatic sheet is used for maintaining the temperature of the low-temperature wax in the wax bin 51 so as to avoid solidification of the low-temperature wax in the wax bin 51.
Preferably, the movable brackets 62 of the turnover assemblies 6 are connected to form a disc structure, and long round holes for the injection tubes 53 to pass through are formed in the disc structure along the radial direction corresponding to the positions of the injection tubes 53;
the bottom of the wax bin 51 is provided with a radial outward lower limit edge structure, and the lower limit edge structure is erected to the top of the disc structure to limit the downward movement of the wax bin 51 relative to the movable support 62.
Preferably, the outer edge of the disc structure is uniformly provided with convex stroke sliding limiting blocks, and the position of the fixed support 61 corresponding to each sliding limiting block is correspondingly provided with a groove 65 along the vertical direction;
the sliding limiting block is installed in the groove 65 in a sliding fit mode, and a sliding pair along the groove 65 is formed between the sliding limiting block and the groove.
Preferably, the turnover spring 64 is located in the groove 65 and above the sliding limiting block, and two ends of the turnover spring are respectively connected and fixed with the upper end face of the groove 65 and the top of the sliding limiting block;
or the turnover spring 64 is positioned in the groove 65 and below the sliding limiting block, and two ends of the turnover spring are respectively connected and fixed with the lower end face of the groove 65 and the bottom of the sliding limiting block.
In practice, the flip spring 64 may be provided as a spring bellows.
Preferably, the tilting shafts 63 of the respective tilting assemblies 6 are connected to form an integral annular shaft structure.
Preferably, an air blowing component 7 is also arranged, and an air blowing pressing block 34 is also arranged and fixed below the injection pressing block 32 on the output end of the driving machine 31;
the blowing assembly 7 comprises a blowing fixing frame 71, a blowing movable frame 72, a blowing spring 73, an air bag 74 and an air nozzle 76;
the air blowing movable frame 72 and the air blowing fixed frame 71 are sequentially arranged above the outer ends of the injection pipes 53 from top to bottom, and the air blowing fixed frame 71 is fixedly arranged on the base 1;
at least two blowing springs 73 are uniformly distributed between the blowing movable frame 72 and the blowing fixed frame 71, and two ends of the blowing springs are respectively fixedly arranged at the bottom of the blowing movable frame 72 and the top of the blowing fixed frame 71;
the top of the air bag 74 is fixedly arranged at the bottom of the air blowing movable frame 72, the bottom of the air bag is fixedly arranged at the air blowing fixed frame 71, and an air outlet communicated with an inlet of an air passage 75 correspondingly arranged in the air blowing fixed frame 71 is arranged; the air tap 76 is positioned at the outlet of the air channel 75, the inlet of the air tap is communicated with the outlet of the air channel 75, and the outlet faces the rim wax pattern forming bin 4.
In actual setting, the air blowing press block 34, the injection press block 32 and the turnover press block 33 and the air blowing movable frame 72, the injection piston 52 and the movable frame 62 which can be respectively moved down and contacted with the downward pressure should be ensured; in the process, the structure outside the air blowing pressing block 34 and the air blowing movable frame 72, such as the injection piston 52 and the movable bracket 62, should not have movement interference, and likewise, the structure outside the injection pressing block 32 and the injection piston 52, such as the air blowing movable frame 72 and the movable bracket 62, should not have movement interference, and the structure outside the overturning pressing block 33 and the movable bracket 62, such as the air blowing movable frame 72 and the injection piston 52, should not have movement interference;
specifically, the air blowing movable frame 72 may be provided in a ring shape, the injection press block 32 and the turnover press block 33 may be penetrated by a ring-shaped middle hole, and the air blowing press block 34 may be directly provided as a cross-shaped plate with a wing plate length greater than the inner diameter of the ring shape; the cross structure corresponding to the blowing press block 34 in the blowing movable frame 72 can correspondingly extend inwards along the radial direction to form a pressing plate structure, so that the total length of the pressing plate structure and the cross wing plate is larger than the annular inner diameter;
the injection press block 32 may be provided in a disc shape, and the diameter of the disc should be larger than the diameter of the gap between the injection pistons 52, so that the injection press block 32 can act on the tops of the injection pistons 52 uniformly distributed along the circumferential direction simultaneously;
the blow block 34 may be provided in a cylindrical configuration that should be able to extend down into contact with and depress the support 62 through the gap between the injection pistons 52.
Preferably, the connecting frame 2 is provided with a straight-line sliding rail structure along the vertical direction, and the outer edge of the air blowing movable frame 72 is correspondingly provided with a straight-line sliding block structure; the linear sliding block structure is connected with the linear sliding rail structure in a sliding fit manner, and a sliding pair along the vertical direction is formed between the linear sliding block structure and the linear sliding rail structure.
This structure is used for guiding the vertical movement of the air blowing movable frame 72, which is advantageous for improving the movement stability of the air blowing movable frame 72.
Preferably, the air blowing fixing frame 71 and the air blowing movable frame 72 are of annular structures, and the air bags 74, the air passages 75 and the air nozzles 76 are arranged in one-to-one correspondence with the straight groove structures 42;
the number of the air blowing springs 73 is identical to that of the air bags 74, and each air blowing spring 73 is staggered with each air bag 74.
Taking a rim wax pattern forming bin 4 with five straight groove structures 42 as an example, the working process and mode of the automobile rim low-temperature forming injection device are described; correspondingly, the number of the injection assemblies 5 and the turnover assemblies 6 is five, the number of the blowing assemblies 7 is preferably five at the same time, the five injection assemblies 5 and the turnover assemblies 6 are arranged at positions corresponding to the five straight groove structures 42 one by one, and the five blowing assemblies 7 and the five injection assemblies 5 are arranged in a staggered and uniformly distributed mode along the circumferential direction.
When the automobile rim low-temperature molding injection device works, the method comprises the following steps of:
firstly, a worker installs a rim wax pattern forming bin 4 in place, so that the rim wax pattern forming bin is fixedly installed with a base 1;
at this time, the outer ends of the injection tubes 53 of the five injection assemblies 5 are directed toward the outer ends of the five straight groove structures 42 one by one, i.e., at the high points of the straight groove structures 42.
In the second step, the driving machine 31 of the linear mechanism 3 works, and outputs motion along the vertical downward direction to drive the injection press block 32, the turnover press block 33 and the blowing press block 34 to synchronously move downwards.
Third, the air blowing press block 34 firstly contacts and presses down the air blowing movable frame 72, the air blowing movable frame 72 moves downwards under the guiding action of the linear slide block structure arranged at the outer edge of the air blowing movable frame and the linear slide rail structure arranged on the connecting frame 2, each air blowing spring 73 is compressed and each air bag 74 is extruded in the downward moving process, air flows which flow from each air bag 74 to each air nozzle 76 through each air passage 75 and are blown out from each air nozzle 76 towards the rim wax pattern forming bin 4 are generated, and a small amount of dust and sundries possibly existing in the rim wax pattern forming bin 4 are removed.
Fourth, then the injection press block 32 contacts and presses down the injection piston 52 of the injection assembly 5 to push the low-temperature wax in the wax cartridge 51 into the injection tube 53; the low-temperature wax in the injection tube 53 is injected into the corresponding straight groove structure 42 from the outer end of the injection tube 53; in the process of pressing down the injection piston 52 by the injection pressing block 32, the injection tube 53 deflects to the upper direction of the straight groove structure 42 by a small amplitude at the same time, but the outer end of the injection tube 53 is strictly ensured to be positioned in a position area allowed by injecting the low-temperature wax into the corresponding straight groove structure 42;
the low temperature wax within the straight channel structure 42 cures to form the support bar for the rim wax pattern. It should be noted that the low temperature wax will have some self-flow in the straight trough structure 42 to fill up the uniformity.
Fifth, after a sufficient amount of low-temperature wax is injected into each straight groove structure 42, the overturning pressing block 33 starts to contact and press the support 62 downwards to compress the overturning spring 64, the overturning action of the injection tube 53 is finished when the overturning spring 64 is compressed to the maximum deformation, and the outer end of the injection tube 53 is overturned outwards towards the annular groove structure 41;
the injection press block 32 then continues to depress the injection piston 52 of the injection assembly 5, the low temperature wax in the injection tube 53 is in turn injected into the ring groove structure 41;
the low temperature wax in the groove structure 41 solidifies to form the rim of the rim wax pattern.
Sixth, after a sufficient amount of low-temperature wax is injected into the ring groove structure 41, the driving machine 31 outputs upward movement along the vertical direction to drive the injection pressing block 32, the turnover pressing block 33 and the blowing pressing block 34 to synchronously move upwards for resetting;
subsequently, the injection piston 52 moves upwards to reset under the action of the elastic force of the injection spring 54, the movable support 62 moves upwards to reset under the action of the elastic force of the overturning spring 64, the injection tube 53 is driven to overturn to reset, the air blowing movable support 72 moves upwards to reset under the action of the elastic force of the air blowing spring 73, and each air bag 74 sequentially sucks air through the corresponding air nozzle 76 and the air channel 75 to reset.
When the low-temperature wax in the wax bin 51 is required to be fed, a worker can apply force at the joint of the first connecting rod and the second connecting rod of the injection connecting rod 55, press the first connecting rod and the second connecting rod to the wax bin 51 to approach, drive the injection piston 52 to move upwards relative to the wax bin until the injection piston 52 is separated from the upper end opening of the wax bin 51, and then feed the material from the upper end opening of the wax bin 51.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a rim wax matrix forming device for automobile rim precision casting, includes base (1) and installs fixed rim wax matrix shaping storehouse (4) on it, rim wax matrix shaping storehouse (4) include annular structure (41) and each along radial locate straight flute structure (42) in annular structure (41), the outer end of straight flute structure (42) in the inboard top of annular structure (41) with annular structure (41) are connected fixedly and are linked together, its characterized in that: the injection device is also provided with a connecting frame (2), a linear mechanism (3), an injection assembly (5) and a turnover assembly (6);
injection subassembly (5) and upset subassembly (6) with straight flute structure (42) one-to-one sets up, sharp mechanism (3) pass through link (2) installation is fixed to injection subassembly (5) and upset subassembly (6) top, its output drive injection subassembly (5) and upset subassembly (6) act in coordination, make injection subassembly (5) earlier with orientation straight flute structure (42) gesture to inject sufficient low temperature wax in straight flute structure (42), each bracing piece of rim wax matrix respectively in each straight flute structure (42) synchronous shaping, afterwards injection subassembly (5) are in under the effect of upset subassembly (6) is turned over to orientation annular groove structure (41) gesture continues to inject low temperature wax to annular groove structure (41), the rim of rim wax matrix encircles in annular groove structure (41) multiple spot injection molding.
2. A rim wax pattern forming device for precision casting of automobile rims according to claim 1, characterized in that: the linear mechanism (3) comprises a driving machine (31), an injection press block (32) and a turnover press block (33), wherein the turnover press block (33) and the injection press block (32) are sequentially arranged and fixed on the output end of the driving machine (31) from top to bottom;
the injection assembly (5) comprises a wax bin (51), an injection piston (52) and an injection tube (53); the wax bin (51) is of a vertical columnar structure with a hollow interior to form a containing cavity, the injection piston (52) is inserted into the containing cavity in a matched manner from an opening at the upper end of the wax bin (51), and a sliding pair along the vertical direction is formed between the injection piston and the wax bin (51); the injection tube (53) is of a tubular structure which is obliquely arranged downwards from inside to outside along the radial direction of the annular groove structure (41), the inner end of the injection tube is bent upwards, is fixedly connected and communicated with the opening at the lower end of the wax bin (51), and the outer end of the injection tube is bent downwards;
the overturning assembly (6) comprises a fixed bracket (61), a movable bracket (62), an overturning shaft (63) and an overturning spring (64); the fixed support (61) is fixedly arranged on the base (1), the movable support (62) is arranged on the fixed support (61) in a sliding fit manner, and a sliding pair along the vertical direction is formed between the fixed support and the movable support; the turnover spring (64) is arranged between the fixed bracket (61) and the movable bracket (62) in a posture that the axis is vertical, and two ends of the turnover spring are respectively connected and fixed with the fixed bracket (61) and the movable bracket (62); the movable support (62) is in limit installation with the lower end of the wax bin (51) to form a limit structure for limiting the wax bin (51) to move downwards relative to the movable support (62); the axis of the turnover shaft (63) is positioned in a horizontal plane, the middle part of the injection tube (53) is rotatably mounted on the turnover shaft (63), and a revolute pair supporting the end part of the injection tube (53) to turn outwards or inwards is formed between the two;
the outer end of the injection tube (53) faces the outer end of the corresponding straight groove structure (42), the injection pressing block (32) is driven by the driving machine (31) to move downwards to press down the corresponding injection piston (52), enough low-temperature wax in the wax bin (51) is injected into the straight groove structure (42), then the overturning pressing block (33) is driven to move downwards to press down the movable support (62), and the movable support (62) is driven to move downwards and then outwards overturned to face the annular groove structure (41);
the movable support (62) moves downwards relative to the fixed support (61) under the action of the downward pressing of the turnover pressing block (33), so that the turnover spring (64) deforms, and moves upwards relative to the fixed support (61) under the action of the elasticity of the turnover spring (64) when the downward pressing of the turnover pressing block (33) is lost, so that the injection tube (53) is driven to reset.
3. A rim wax pattern forming device for precision casting of automobile rims according to claim 2, characterized in that: the injection assembly (5) is also provided with an injection spring (54);
the upper end of the injection piston (52) and the lower end of the wax bin (51) are respectively in an upper limit edge structure and a lower limit edge structure which are radially outwards expanded, the injection spring (54) is sleeved and installed outside the wax bin (51) and the injection piston (52), and the upper end and the lower end of the injection spring are respectively connected and fixed to the bottom of the upper limit edge structure and the top of the lower limit edge structure.
4. A rim wax pattern forming device for precision casting of automobile rims according to claim 3, characterized in that: the injection assembly (5) is also provided with an injection connecting rod (55);
the injection connecting rod (55) comprises a first connecting rod and a second connecting rod, the upper end of the first connecting rod is rotationally connected with the upper limit edge structure, the lower end of the first connecting rod is rotationally connected with the upper end of the second connecting rod, and the lower end of the second connecting rod is rotationally connected with the lower limit edge structure;
the revolute pairs between the first connecting rod, the second connecting rod, the upper limiting edge structure and the lower limiting edge structure are arranged along the tangential direction of the ring groove structure (41), and the total length of the first connecting rod and the second connecting rod is larger than the total length of the wax bin (51) and the injection piston (52).
5. A rim wax pattern forming device for precision casting of automobile rims according to claim 2, characterized in that: the movable brackets (62) of the overturning assemblies (6) are connected to form a disc structure, and long round holes for the injection tubes (53) to pass through are formed in the disc structure along the radial direction at positions corresponding to the injection tubes (53);
the bottom of the wax bin (51) is provided with a radial outward lower limit edge structure, and the lower limit edge structure is erected to the top of the disc structure to limit the downward movement of the wax bin (51) relative to the movable support (62).
6. The rim wax pattern forming device for precision casting of automobile rims according to claim 5, wherein: the overturning shafts (63) of the overturning assemblies (6) are connected to form an integral annular shaft structure;
the outer edge of the disc structure is uniformly provided with convex stroke sliding limiting blocks, and the position of the fixed support (61) corresponding to each sliding limiting block is provided with a groove (65) along the vertical direction correspondingly;
the sliding limiting block is installed in the groove (65) in a sliding fit mode, and a sliding pair along the groove (65) is formed between the sliding limiting block and the groove.
7. The rim wax pattern forming device for precision casting of automobile rims according to claim 6, wherein: the turnover spring (64) is positioned in the groove (65) and above the sliding limiting block, and two ends of the turnover spring are respectively connected and fixed with the upper end face of the groove (65) and the top of the sliding limiting block;
or the turnover spring (64) is positioned in the groove (65) and below the sliding limiting block, and two ends of the turnover spring are respectively connected and fixed with the lower end face of the groove (65) and the bottom of the sliding limiting block.
8. A rim wax pattern forming device for precision casting of automobile rims according to claim 2, characterized in that: the device is also provided with an air blowing component (7), and an air blowing pressing block (34) is arranged and fixed below the injection pressing block (32) on the output end of the driving machine (31);
the air blowing assembly (7) comprises an air blowing fixing frame (71), an air blowing movable frame (72), an air blowing spring (73), an air bag (74) and an air tap (76);
the air blowing movable frame (72) and the air blowing fixed frame (71) are sequentially arranged above the outer ends of the injection pipes (53) from top to bottom, and the air blowing fixed frame (71) is fixedly arranged on the base (1);
at least two blowing springs (73) are uniformly distributed between the blowing movable frame (72) and the blowing fixed frame (71), and two ends of the blowing springs are respectively fixedly arranged at the bottom of the blowing movable frame (72) and the top of the blowing fixed frame (71);
the top of the air bag (74) is fixedly arranged at the bottom of the air blowing movable frame (72), the bottom of the air bag is fixedly arranged at the air blowing fixed frame (71), and an air outlet communicated with an air passage (75) inlet correspondingly arranged on the air blowing fixed frame (71) is arranged; the air tap (76) is positioned at the outlet of the air channel (75), the inlet of the air tap is communicated with the outlet of the air channel (75), and the outlet faces the rim wax pattern forming bin (4).
9. The rim wax pattern forming device for precision casting of automobile rims according to claim 8, wherein: the connecting frame (2) is provided with a linear sliding rail structure along the vertical direction, and the outer edge of the air blowing movable frame (72) is correspondingly provided with a linear sliding block structure; the linear sliding block structure is connected with the linear sliding rail structure in a sliding fit manner, and a sliding pair along the vertical direction is formed between the linear sliding block structure and the linear sliding rail structure.
10. The rim wax pattern forming device for precision casting of automobile rims according to claim 8, wherein: the air blowing fixing frame (71) and the air blowing movable frame (72) are of annular structures, and the air bags (74), the air passages (75) and the air nozzles (76) are arranged in one-to-one correspondence with the straight groove structures (42);
the number of the air blowing springs (73) is consistent with that of the air bags (74), and the air blowing springs (73) and the air bags (74) are staggered.
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| CN202410092752.9A CN117600401B (en) | 2024-01-23 | 2024-01-23 | Rim wax pattern forming device for precision casting of automobile rim |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118371655A (en) * | 2024-04-15 | 2024-07-23 | 泰州市博世特精密铸造有限公司 | Wax mould injection moulding device |
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