CN210848209U - Wax mould of balance block pouring system - Google Patents
Wax mould of balance block pouring system Download PDFInfo
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- CN210848209U CN210848209U CN201921618674.2U CN201921618674U CN210848209U CN 210848209 U CN210848209 U CN 210848209U CN 201921618674 U CN201921618674 U CN 201921618674U CN 210848209 U CN210848209 U CN 210848209U
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Abstract
The utility model belongs to the technical field of metal casting, a wax matrix of balancing piece gating system is disclosed, including pouring basin, sprue, cross gate, ingate, balancing piece wax matrix, sprue and cross gate constitute main runner, balancing piece wax matrix passes through ingate and connects on the sprue, pouring basin connects on the cross gate, cross gate connects both ends about the sprue, its characterized in that, the ingate is equipped with the rising head on the cross gate that does not connect the pouring basin; the width of the straight pouring gate is 12 mm; the wax pattern has a length of 215mm from the pouring cup to the riser. This wax matrix shortens the total length and the width of sprue through strengthening the rising head position of the gating system, improves the feeding ability, tentatively realizes reducing the gating system dead weight, improves the purpose of molten steel utilization ratio.
Description
Technical Field
The utility model belongs to the technical field of the metal casting technique and specifically relates to a wax matrix of balancing piece gating system.
Background
The compressor is the heart of the refrigeration system, and the balance block is a key part for keeping dynamic balance when the rotor of the motor of the compressor rotates at high speed. When the refrigeration compressor works, the rotor drives the eccentric crankshaft to rotate, and the rotating crankshaft drives the piston sleeved on the eccentric part of the eccentric crankshaft to compress low-temperature and low-pressure refrigerant gas, so that the high-temperature and high-pressure refrigerant gas is discharged to the exhaust pipe, and the refrigeration cycle of compression → condensation → expansion → evaporation (heat absorption) is realized. In the process of the refrigeration cycle, the eccentric rotation of the piston causes unbalanced stress on the whole system, and vibration and noise are easy to generate. In order to balance the stress condition of the compressor, a mode of adding a balance block at the rotor end is adopted, so that the whole system keeps stress balance. The function and purpose of the balance block are to offset the unbalanced stress generated by the eccentric rotation movement to a certain extent, so that the system is kept balanced, and the purposes of reducing noise, vibration and energy consumption are achieved.
With the continuous research, development and application of compressors with new technical characteristics of silence, frequency conversion, dual cores and the like, the compressor serving as a balance block of core parts has huge market demand and growth potential. According to the incomplete statistical data of the air conditioner industry, the sales volume of the Chinese air conditioners is more than 8000 ten thousand in 2015. The huge market demand determines the production organization mode of the balance blocks in large batch, and at present, in the market environment that the production cost of raw materials, labor cost and the like is continuously increased and the price competition is increasingly severe, the production efficiency and the product quality can be improved, so that the balance blocks can be used in the severe market competition without being lost.
In the production process of the balance block, the current balance block product is generally produced by adopting an investment casting process, and in the investment casting process, the production level of a wax mould directly determines the product quality and the production efficiency and is a key link for producing the balance block.
Therefore, the technical problem to be solved by the present application is: how to reduce the dead weight of a pouring system, and improving the utilization rate of molten steel while ensuring the pouring quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a balancing piece gating system's wax matrix, this wax matrix shorten total length and sprue's width through strengthening the rising head position of gating system, improve the feeding ability, tentatively realize reducing the gating system dead weight, improve the purpose of molten steel utilization ratio.
The technical scheme of the application is as follows:
a wax mould of a balance block pouring system comprises a sprue cup, a sprue, a cross gate, an ingate and a balance block wax mould, wherein the sprue and the cross gate form a main gate; the width of the straight pouring gate is 12 mm; the wax pattern has a length of 215mm from the pouring cup to the riser.
In the wax mould of the balance block pouring system, the thickness of the main pouring gate is gradually reduced from the pouring cup to the riser, the thickest part of the main pouring gate is 12mm, and the thinnest part of the main pouring gate is 6 mm.
In the wax mould of the balance block pouring system, the upper parts of two ends of a horizontal pouring channel connected with a pouring cup are fillets with the diameter of 25 mm; the connecting position of the horizontal pouring channel and the straight pouring channel connected with the pouring cup is a fillet with the diameter of 15 mm.
In the wax mould of the balance block pouring system, the feeder head is 18mm long, 6mm wide and 8mm high.
In the wax mold of the balance block pouring system, the parting surface of the balance block wax mold is positioned on one side of the balance block wax mold close to the pouring cup.
In the wax mould of the balance block pouring system, the balance block wax mould is provided with a long rivet hole and a short rivet hole, and one side of the balance block wax mould with the long rivet hole is connected with the inner pouring gate.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses an strengthen the rising head position of the gating system, shorten total length and the width of sprue, improve the feeding ability, tentatively realize reducing the gating system dead weight, improve the purpose of molten steel utilization ratio.
Furthermore, the thickness of the pouring system is reduced, the round angle of the upper half section is increased, molten steel flow is stabilized, molten steel filling capacity is improved, and the purposes of further reducing the dead weight of the pouring system and improving the utilization rate of molten steel are achieved.
Drawings
Fig. 1 is a front view of a main runner according to embodiment 1 of the present invention.
FIG. 2 is a wax pattern wax injection flow diagram of a main runner of embodiment 1 of the present invention;
FIG. 3 is a side view of the main runner of embodiment 1 of the present invention;
fig. 4 is a front view of embodiment 1 of the present invention;
fig. 5 is a side view of embodiment 1 of the present invention;
fig. 6 is a plan view of embodiment 1 of the present invention;
fig. 7 is a perspective view of a balance weight wax mold according to embodiment 1 of the present invention;
fig. 8 is a front view of a wax pattern according to a conventional art of the present invention;
fig. 9 is a partial enlarged view of a wax pattern according to the conventional art of the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the following detailed description, but the present invention is not limited thereto.
Example 1
As shown in fig. 1-7, a wax mold of a balance block pouring system comprises a sprue cup 1, a sprue 2, a runner 3, an ingate 4 and a balance block wax mold 5, wherein the sprue 2 and the runner 3 form a main runner, the balance block wax mold 5 is connected to the sprue 2 through the ingate 4, the sprue cup 1 is connected to the runner 3, the runner 3 is connected to the upper end and the lower end of the sprue 2, and a riser 6 is arranged on the runner 3 which is not connected with the sprue cup 1; the width of the sprue 2 is 12 mm; the wax pattern has a length of 215mm from the pouring cup 1 to the riser 6.
In connection with the present embodiment, the counterweight casting process is investment casting, also known as lost wax casting: selecting proper investment material (such as paraffin) to manufacture an investment; repeatedly dipping refractory paint and spreading refractory sand on the fired mold, hardening the mold shell and drying; dissolving the internal melting mold to obtain a cavity; firing the shell to achieve sufficient strength and burning off residual investment material; pouring the required metal material; and (5) solidifying and cooling, and removing sand after shelling, thereby obtaining a high-precision finished product. According to the requirements of the product, heat treatment, cold working and surface treatment are carried out.
The wax pattern described in this example is the investment pattern described above.
In the production process, the sprue cup 1, the sprue 2 and the cross gate 3 are obtained by injecting wax through a set of dies; wax is fed in the wax feeding direction as shown in the D position of fig. 2, and wax mold casting is carried out; the arrows in fig. 2 indicate the flow direction of the wax, and E in fig. 3 indicates the parting plane, which is the parting plane for injecting the wax in the mold. The ingate 4 and the balance weight wax pattern 5 are obtained by injecting wax through another set of mold, and then the ingate and the balance weight wax pattern are combined together to form the wax pattern of the embodiment, which can be referred to fig. 1 specifically.
Referring to fig. 2, the wax injection flow directions of the sprue cup 1, the sprue 2, the runner 3, and the riser 6 of the present embodiment are shown.
In the embodiment, the total length and the width of the sprue 2 are shortened by reinforcing the dead head 6 of the pouring system, so that the feeding capacity is improved, and the aims of reducing the dead weight of the pouring system and improving the utilization rate of molten steel are fulfilled preliminarily.
Before transformation, the wax mould of the balance block is shown in fig. 8, and it can be found that fig. 8 has no riser 6, so that the sprue 2 is wider, the total length of the sprue is longer, and unnecessary waste of molten iron is caused in the pouring process.
Through the transformation, the possibility of further thickness reduction of the main pouring channel is provided, specifically, the thickness of the main pouring channel is gradually reduced from the pouring cup 1 to the riser 6, the thickest part of the main pouring channel is 12mm, and the thinnest part of the main pouring channel is 6 mm.
Meanwhile, the upper parts of the two ends of the horizontal pouring gate 3 connected with the pouring cup 1 are fillets A with the diameter of 25 mm; the connecting position of the horizontal pouring channel 3 connected with the pouring cup 1 and the straight pouring channel 2 is a fillet B with the diameter of 15 mm.
Compared with the prior design, the increased fillet of the embodiment can stabilize the rheological behavior of molten steel in the mold shell (the high temperature resistant mold shell manufactured by the wax mold of the embodiment), and the thickness of the main pouring gate can be reduced by combining the design of the riser 6.
In the conventional design, as shown in FIG. 8, the thickest part of the main runner is 20mm, and the thinnest part is 11.54mm, and the thickness of the main runner is reduced by 40% on the basis of the traditional design.
Preferably, the feeder 6 is 18mm long, 6mm wide and 8mm high. It is of course theoretically possible to increase the size of the risers 6 on this basis.
In the conventional design, referring to fig. 8 and 9, the parting surface C of the balance weight wax mold 5 is located at the lower side, which causes a problem that the molten steel needs enough pressure to flow upwards after entering the cavity from the sprue 2 through the ingate 4, and the mold filling is difficult.
Based on this, in this embodiment, referring to fig. 5, the parting surface C of the balance weight wax mold 5 is located on one side of the balance weight wax mold 5 close to the pouring cup 1, and the molten steel flows downward only by its own gravity after entering the cavity from the sprue 2 through the ingate 4, so that the mold filling is easy, more specifically, referring to fig. 7, the long rivet hole 7 and the short rivet hole 8 are arranged on the balance weight wax mold 5, and one side of the balance weight wax mold 5 having the long rivet hole 7 is connected to the ingate 4; a boss is formed at the position of the long rivet hole 7 of the balance weight wax mold 5.
The above description is only for the preferred embodiment of the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A wax pattern of a balance block pouring system comprises a sprue cup, a sprue, a cross gate, an ingate and a balance block wax pattern, wherein the sprue and the cross gate form a main gate; the width of the straight pouring gate is 12 mm; the wax pattern has a length of 215mm from the pouring cup to the riser.
2. The wax pattern of the balance weight gating system according to claim 1, wherein the thickness of the main pouring gate gradually decreases from the pouring cup to the feeder head, the thickest part of the main pouring gate is 12mm, and the thinnest part of the main pouring gate is 6 mm.
3. The wax pattern of the balance weight gating system according to claim 2, wherein the upper portions of both ends of the runner to which the pouring cup is connected are rounded corners having a diameter of 25 mm; the connecting position of the horizontal pouring channel and the straight pouring channel connected with the pouring cup is a fillet with the diameter of 15 mm.
4. The wax pattern of the balance weight gating system according to any one of claims 1 to 3, wherein the feeder head has a size of 18mm in length, 6mm in width and 8mm in height.
5. The weight gating system wax pattern of any one of claims 1 to 3, wherein the parting plane of the weight wax pattern is located on a side of the weight wax pattern adjacent to the sprue cup.
6. The wax pattern for the balance weight gating system according to claim 5, wherein the balance weight wax pattern is provided with a long rivet hole and a short rivet hole, and one side of the balance weight wax pattern with the long rivet hole is connected with the inner runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921618674.2U CN210848209U (en) | 2019-09-26 | 2019-09-26 | Wax mould of balance block pouring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921618674.2U CN210848209U (en) | 2019-09-26 | 2019-09-26 | Wax mould of balance block pouring system |
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| CN210848209U true CN210848209U (en) | 2020-06-26 |
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| CN201921618674.2U Active CN210848209U (en) | 2019-09-26 | 2019-09-26 | Wax mould of balance block pouring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664162A (en) * | 2021-08-19 | 2021-11-19 | 中国航发沈阳黎明航空发动机有限责任公司 | Large-scale thin wall foundry goods gating system more than 650mm of length |
-
2019
- 2019-09-26 CN CN201921618674.2U patent/CN210848209U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664162A (en) * | 2021-08-19 | 2021-11-19 | 中国航发沈阳黎明航空发动机有限责任公司 | Large-scale thin wall foundry goods gating system more than 650mm of length |
| CN113664162B (en) * | 2021-08-19 | 2022-07-29 | 中国航发沈阳黎明航空发动机有限责任公司 | Large-scale thin wall foundry goods gating system more than 650mm of length |
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