CN211248221U - Casting and pouring system for gray iron pressure plate of clutch - Google Patents

Abstract

The utility model protects a casting and pouring system for a clutch gray iron pressure plate, which comprises at least one pouring system unit, the pouring system unit includes at least one pressure plate casting, and the pressure plate casting is connected with a continuous pressing edge runner, so the The continuous blanking runner includes a vertical runner, a slag collecting runner and an intermediate runner which are connected to each other in turn; the pressure disc casting and the intermediate runner are overlapped to form a first water inlet, and the intermediate runner and the slag collecting runner The second water inlet is formed by lap joint; under the condition that a certain structural ratio is satisfied between the continuous blanking runner and the casting, a casting mold without a riser is formed. Compared with the prior art, the gating system of the present invention is innovative. The feeding method without riser is adopted, which fully meets the feeding requirements of castings and also reduces the amount of molten iron used, which provides inspiration for modern industrial green production.

Description

A casting and pouring system for clutch gray iron pressure plate

technical field

The utility model relates to the field of foundry industry, in particular to a casting and pouring system for a clutch gray iron pressure plate.

Background technique

The casting process is the process of pouring molten metal into a mold, and cooling and solidifying to obtain parts with the desired shape and properties. Casting technology is one of the main methods to obtain mechanical product blanks. It is an important basic process in the foundry machinery industry. It occupies an important position in the national economy and is currently widely used in the casting of clutch pressure plates.

Most of the existing clutch pressure plate molds are symmetrically distributed on the left and right, and the vertical runner passes through the middle of the left and right castings. However, in the long-term actual production, it is found that the existing casting process has the following defects: 1. The process design is cumbersome, there are many factors affecting the calculation of the thermal section, it is difficult to accurately control the size of the riser, and the quality levels of different batches of products are often uneven. 2. If the diameter or position of the riser is not set properly, shrinkage cavities will appear in the lower part of the riser; 4. There are multiple water inlets in the existing gating system, resulting in unstable molten iron filling, slag inclusions, sand holes, etc. The probability of defects is increased, and a lot of molten iron is wasted by setting too many runners.

In order to solve the above-mentioned problems, and combined with the strong self-feeding effect of gray iron during solidification, the utility model proposes a feeding method that modifies the top riser feeding method in the original process to a feeding method without a riser, which meets the requirements of At the same time of the feeding effect, the subsequent cleaning process of the casting is simplified, the labor intensity is reduced, and the quality and efficiency of the casting process are improved.

Utility model content

The technical problem solved by the utility model is to provide a casting and pouring system for the clutch gray iron pressure plate.

The technical means adopted by the present invention are as follows.

A casting and gating system for a clutch gray iron pressure plate, comprising at least one gating system unit, the gating system unit including at least one pressure plate casting, the pressure plate casting being connected to a continuous blanking runner, the continuous pressing The side runner consists of a vertical runner, a slag collecting runner and an intermediate runner which are connected to each other in turn; wherein the pressure plate casting and the intermediate runner are overlapped to form the first water inlet respectively, and the overlap width is 2.5-3.5mm; the intermediate runner It is overlapped with the slag collecting runner to form a second water inlet, and the overlap width is 3.5-5mm; the overlap length of the two places is the same.

The thickness of the slag collecting runner is H2, and the half of the maximum width is L2; the thickness of the intermediate runner is H1, and the maximum width is L1; the height of the pressure plate casting body is H, and the maximum width is L. The above parameters The following conditions are met:

H1=(1.5-2)H; L1=(1.1-1.3)L;

H2=(1.2-1.5)H1; L2=(1.2-1.4)L1.

Further, a casting and pouring system for a clutch gray iron pressure plate also includes two pressure plate castings arranged symmetrically on the left and right sides, a slag collecting runner is connected below the vertical runner, and the slag collecting runner is respectively connected with an intermediate pouring channel. Each intermediate runner connects to a pressure plate casting.

Further, the vertical runner adopts a standard trapezoidal runner, and the cross-sectional area is at least 300 mm ² ; the height of the vertical runner is at least 60 mm higher than the top of the pressure plate casting.

Further, the transverse cross-sectional shape of the slag collecting runner is a trapezoid.

Further, the pouring system is connected to the runner mouth through a runner, the runner includes a first runner and a second runner, and the first runner and the second runner are arranged between the runners. There is at least one interconnected wafer runner, and the thickness of the wafer runner is 2-3mm.

The beneficial effects of the present invention are as follows.

The utility model innovatively proposes a casting and pouring system for the clutch gray iron pressure plate. By virtue of the strong self-feeding effect of the gray iron during solidification, the feeding method of the top riser in the original process is modified to a type without riser. In the feeding method, the cancellation of the top riser improves the yield of the platen process, perfectly solves the shrinkage defect of the riser position, and saves a lot of molten iron; secondly, the no-riser process enables the platen to be filled during the pouring process. Stable, effectively reducing defects such as poor friction surface processing and blisters; at the same time, the pouring system without risers further simplifies the original pouring, saving time and effort in the later processing process. After a large number of production verifications, the new process can not only stabilize production but also greatly improve production efficiency, which is worthy of promotion.

Description of drawings

FIG. 1 is a schematic structural diagram of a casting and pouring system for a clutch gray iron pressure plate of the present invention.

FIG. 2 is a schematic view of a partial cutaway structure of a casting and pouring system of a clutch gray iron pressure plate of the present invention.

FIG. 3 is a partial cross-sectional schematic view of the casting and pouring system of a clutch gray iron pressure plate of FIG. 2 according to the present invention.

Figure 4 is a schematic diagram of the lap length of the water inlet A, the lap length of the water inlet B, and the height difference between the vertical runner and the pressure plate.

5 is a schematic diagram of the positions of the first water inlet and the second water inlet in the present invention.

Detailed ways

Below in conjunction with the accompanying drawings, the specific implementation, structure, features and functions of a casting and pouring system for a clutch gray iron pressure plate proposed according to the present utility model are described in detail as follows.

As shown in Figure 1, the present utility model is a schematic structural diagram of the casting and pouring system of the clutch gray iron pressure plate. In the present utility model, the casting mold structure, the top riser feeding method in the original process is modified to one without risers. Feeding mode, the casting and gating system mainly includes at least one gating system unit, and the gating system unit includes at least one pressure plate casting 6, the pressure plate casting 6 is connected to a continuous blanking runner, the continuous pressure The side runner is connected with the first runner 1, the second runner 2 and the thin runner 5 to form a casting mold without risers as a whole. This method without riser casts other similar castings. Compared with the prior art, the utility model innovatively adopts the feeding method without riser, which fully meets the feeding requirements of castings and also reduces the amount of molten iron used, which is green for modern industry. Production provides inspiration.

From the above, the feeding method without the riser of the present invention is completed by the continuous blanking runner, please refer to FIG. 2, FIG. 3 and FIG. 5 at the same time. Connected vertical runner 3, slag collecting runner 4 and intermediate runner 7. In a preferred embodiment, the pressure plate casting 6 is overlapped with the intermediate runner 7 to form the first water inlet A, and the overlap width is 2.5-3.5mm; the intermediate runner 7 is overlapped with the slag collecting runner 4 The second water inlet B is formed, and the overlapping width is 3.5-5mm. The overlapping lengths of the first water inlet A and the second water inlet B are the same, and the specific length should be adjusted according to the filling time of the product; The first water inlet A and the second water inlet B can allow molten iron to pass through. Since both are flow runners with small slits, the sand holes and quality caused by the inflow of impurities in the molten iron into the casting cavity can be avoided again. inequality.

In order to meet the feeding requirements under the feeding mode without risers, the continuous blanking runner of the present invention is set as follows: the thickness of the slag collecting runner 4 is H2, and the half of the maximum width is L2; The thickness of the runner 7 is H1, and the maximum width is L1; the height of the main body of the pressure plate casting 6 is H, and the maximum width is L, wherein the thickness mentioned here is the height of the transverse section of the corresponding runner, and the maximum The width is the maximum length of the transverse section of the corresponding runner; since the pressure plate casting is of annular structure, the maximum length of the pressure plate casting is the maximum ring width of the pressure plate casting.

The above parameters meet the following conditions:

H1=(1.5-2)H; L1=(1.1-1.3)L;

H2=(1.2-1.5)H1; L2=(1.2-1.4)L1.

In a preferred embodiment, the gating system unit includes two pressure disc castings 6 arranged symmetrically on the left and right sides, the slag collecting runner 4 is connected below the vertical runner 3, and the two slag collecting runners 4 are on both sides of the two slag collecting runners 4. An intermediate runner 7 is respectively connected, and each intermediate runner 7 is connected to a pressure plate casting 6 .

Please refer to FIG. 4 , in order to satisfy the feeding requirement and for the stable filling of molten iron, the continuous blanking runner of the present invention is preferably arranged in the following manner: the slag collecting runner 4 is arranged on the two pressure plate castings Below 6, the pressure disc casting 6 is overlapped with the intermediate runner 7 to form the first water inlet A, and the overlap width is 2.5-3.5mm; the overlap length is T _A ; the intermediate runner 7 and the slag runner ( 4) The lap joint forms the second water inlet, and the lap joint width is 3.5-5mm; the lap joint length is T _B , the lap joint length T _A and T _B of the water inlet A and the water inlet B are the same, and the specific length depends on the product. The filling time should be adjusted; the vertical runner adopts a standard trapezoidal runner, and its cross-sectional area should be adjusted according to the product filling time, and the cross-sectional area is at least 300mm ² ; the height of the vertical runner is at least higher than the The top of the pressure plate casting is 60mm.

Furthermore, the vertical runner 3 is connected to the runner opening 8 through a runner at one end away from the slag collecting runner 4. As shown in FIG. 1 , the runner includes a first runner 1 and a second runner. Two runners 2, between the first runner 1 and the second runner 2, at least one interconnected sheet runner 5 is provided, and the sheet runner 5 and the runner are conducive to filtering iron The impurities in the water can also prevent the turbulent flow that occurs when the molten iron flows directly into the vertical runner.

The utility model innovatively proposes a casting and pouring system for the clutch gray iron pressure plate, which has the following advantages in practical application: firstly, the top riser feeding method in the original process is modified to the one without riser. The shrinkage method perfectly solves the shrinkage defect at the riser position. At the same time, the bottom edge type water entry is further formed by the overlapping design between the inner runner and the outer edge of the casting, and the overlapping part can be easily removed and omitted in the follow-up. The step of manual grinding is greatly improved, the efficiency of subsequent cleaning is greatly improved, and the labor intensity is reduced; secondly, the riser-free method greatly improves the process yield, saves a lot of molten iron, and thus saves production costs; the new process has undergone a large number of production verifications, It can not only stabilize production but also greatly improve production efficiency, which is worthy of promotion.

Claims (5)

1. A casting and gating system for a clutch gray iron pressure plate, comprising at least one gating system unit, characterized in that the gating system unit includes at least one pressure plate casting (6), and the pressure plate casting (6) is connected to a a continuous blank-holder runner, the continuous blank-holder runner sequentially comprises a vertical runner (3), a slag collecting runner (4) and an intermediate runner (7) that are connected to each other; The pressure plate casting (6) is overlapped with the intermediate runner (7) to form a first water inlet (A), and the overlap width is 2.5-3.5mm; The intermediate runner (7) and the slag collecting runner (4) are overlapped to form a second water inlet (B); the overlap width is 3.5-5mm; The overlapping lengths of the first water inlet (A) and the second water inlet (B) are the same; The thickness H2 of the slag collecting runner (4), the half of the maximum width is L2; the thickness of the intermediate runner (7) is H1, and the width is L1; the main body height of the pressure plate casting (6) is H, The maximum width is L, and the above parameters satisfy the following conditions: H1=(1.5-2)H; L1=(1.1-1.3)L; H2=(1.2-1.5)H1; L2=(1.2-1.4)L1. 2 . The casting and gating system for clutch gray iron pressure plate according to claim 1 , characterized in that it comprises two pressure plate castings ( 6 ) symmetrically arranged on the left and right, and one is connected below the vertical runner ( 3 ). 3 . A slag collecting runner (4), the slag collecting runner (4) is respectively connected with an intermediate runner (7), and each intermediate runner (7) is connected with a pressure plate casting (6). 3. A casting and gating system for clutch gray iron pressure plate according to claim 2, characterized in that, the vertical runner (3) adopts a standard trapezoidal runner, and the cross-sectional area is at least 300mm ² . The height of the vertical runner (3) is at least 60mm higher than the top of the pressure plate casting (6). 4. The casting and gating system for a clutch gray iron pressure plate according to any one of claims 1 to 3, characterized in that the lateral direction of the slag collecting runner (4) and the intermediate runner (7) is The cross-sectional shape is trapezoidal with a draft angle of 3° to 5°. 5. The casting gating system for clutch gray iron pressure plate according to claim 4, characterized in that, the gating system is connected with the runner mouth (8) through a runner, and the runner comprises a first runner. A runner (1) and a second runner (2), at least one interconnected sheet runner (5) is arranged between the first runner (1) and the second runner (2), The thickness of the thin runner is 2-3mm.

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