CN220782157U

CN220782157U - Automatic wax injection mold for elbow flange

Info

Publication number: CN220782157U
Application number: CN202322662044.8U
Authority: CN
Inventors: 陈涛; 卢发昌; 王信伟; 吴雨; 夏荣军
Original assignee: Xiangyang City Liqiang Machinery Co ltd
Current assignee: Xiangyang City Liqiang Machinery Co ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-04-16
Anticipated expiration: 2033-09-27

Abstract

The utility model relates to the technical field of wax mold casting, in particular to an automatic wax injection mold for an elbow flange, which comprises an upper mold and a lower mold, wherein a cavity is arranged between the upper mold and the lower mold, the cavity comprises a wax channel and a wax mold cavity, each wax mold cavity is provided with a flange slide block cavity and two core pulling cavities, a flange slide block is arranged in the flange slide block cavity, the lower mold is provided with a driving device for driving the flange slide block to be in sliding connection with the lower mold along a parting surface, the side surface of the flange slide block is provided with a flange cavity for coating a flange, the flange cavity is internally provided with a lug for forming a flange connecting hole and a groove for forming a feeding wax block at the outer end of the flange.

Description

Automatic wax injection mold for elbow flange

Technical Field

The utility model relates to the technical field of wax mould casting, in particular to an automatic wax injection mould for an elbow flange.

Background

The investment precision casting is a casting process with less cutting or no cutting, which is to make a wax part model by using wax, wrap a layer of refractory materials such as silica sol, clay and the like on the outer surface of the wax part model, heat the wax part to melt and flow out, thereby obtaining an empty shell formed by the refractory materials, then pour the metal into the empty shell after melting, and knock the refractory materials into pieces after cooling the metal to obtain a metal module.

The elbow is a common part in the fields of machinery, chemical industry and the like. The chinese patent No. ZL201922021697 discloses an investment mold structure for making a square elbow, which can make a wax mold for a square elbow, but the prior art is silent about how to make a wax mold for a flanged elbow. In the prior art, a split type wax mould processing and combining mode is generally adopted, for example, chinese patent 201410650999 discloses a precision casting mould for bent pipes, and when flange bent pipes are precisely cast, a process technology of split manufacturing and assembling wax parts is adopted. And, to the elbow flange that this application was planned to process, like fig. 2, it is provided with the flange in elbow department, because this position wall thickness is thinner, the area is great, and this position takes place deformation easily when cooling and drawing of patterns, leads to wax matrix disqualification, above problem can't be solved in prior art.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides an automatic wax injection mold for an elbow flange, which has a scientific structure, is matched with flanges at an elbow position formed by an upper mold and a lower mold through a flange sliding block, forms a feeding wax block at the end face, is easy to demould, is not easy to deform and is beneficial to subsequent casting.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an automatic wax injection mould for elbow flange, it includes mould, lower mould, be provided with the cavity between last mould and the lower mould, the cavity includes wax way, wax mould chamber, and every wax mould chamber sets up a flange slider chamber, two core-pulling chamber, be provided with the flange slider in the flange slider chamber, the lower mould is provided with the drive the flange slider along the parting plane with lower mould sliding connection's drive arrangement, the side of flange slider is provided with the flange chamber that is used for cladding flange, the flange intracavity is provided with the lug that is used for shaping flange connecting hole, is used for the recess at the inside first core-pulling of flange outer end shaping feeding wax piece and the second core-pulling of two core-pulling intracavity are provided with.

Through adopting above-mentioned technical scheme, at first, the structure with the wax matrix has increased the feeding wax piece, and the position of feeding wax piece is located the middle part of flange outside terminal surface for flange department obtains abundant feeding, avoids this position wax matrix shrink. After solidification, the strength of the flange is increased due to the existence of the feeding wax block, the flange is not easy to deform, each wax mould can be connected by using the feeding wax block in the follow-up process of manufacturing the wax tree, the feeding wax block is used as a pouring channel for casting in the casting process, and the redundant part is cut off after the casting is solidified. Secondly, the technical scheme provides a penetrate wax mould for elbow flange, when using, first loose core and second loose core slide along the core cavity, and the flange slider slides along flange slider chamber, then go up the mould and descend and lower mould compound die for it forms complete closed curved surface with last mould, lower mould jointly, thereby penetrates wax liquid through the wax way and forms the wax mould. The two core-pulling cavities are used for forming the inner wall of the wax mould, the upper mould and the lower mould are used for forming the outer wall of the wax mould, and the flange slide block is used for forming one side of the flange, and the upper mould and the lower mould are respectively used for forming the upper part and the lower part of the other side of the flange. When the die is withdrawn, the upper die firstly goes upward, then the first core pulling, the second core pulling and the flange sliding block are withdrawn respectively, and the wax die is taken down.

The utility model further provides that the front end of the lug can be abutted against the upper die or the lower die, the lug is used for forming a hole at the flange of the wax die, the hole formed is a through hole when the front end of the lug is abutted against the upper die or the lower die, and the hole formed is a blind hole when the front end of the lug is not abutted against the upper die or the lower die. Since the flange holes are typically through holes, further processing is required after blind holes are formed.

The lower die is further provided with a plurality of T-shaped guide grooves, and the flange sliding block, the first loose core and the second loose core are respectively connected with the lower die in a sliding mode through the guide grooves. The guide groove can guide the flange slide block, the first core pulling and the second core pulling, so that the telescopic wax mould is more stable and the precision of the wax mould is higher.

According to the utility model, the first core pulling device and the second core pulling device are further provided with the limiting blocks respectively, the bottoms of the limiting blocks are T-shaped guide blocks which are in sliding connection with the guide grooves, and when the limiting blocks slide to the two ends of the guide grooves, the end parts of the guide grooves are abutted against the limiting blocks.

The utility model is further arranged in such a way that a plurality of telescopic cylinders for driving the first core pulling cylinder and the second core pulling cylinder are arranged on the side face of the lower die, and the front ends of telescopic rods of the telescopic cylinders are connected with the limiting blocks.

The utility model further provides that the cavity comprises four wax mold cavities which are distributed in a rectangular shape and are symmetrically arranged, and the four flange slide block cavities are close to the middle part of the lower mold.

The driving device comprises a driving seat capable of moving along the vertical direction, the driving seat is positioned below the lower die, the driving seat is provided with four deflector rods, the flange sliding block is provided with through holes which are obliquely arranged, and the deflector rods are connected with the flange sliding block in a sliding manner through the through holes.

The utility model is further arranged that the wax channel comprises a first wax channel in a shape of a Chinese character 'I', and a second wax channel in a shape of a Chinese character 'I', wherein the first wax channel extends from the side surface of the lower die to the middle part and is communicated with the center of the second wax channel, and four end points of the second wax channel extend to the four wax die cavities.

The beneficial effects of the utility model are as follows: 1. be provided with feeding wax stone, optimized the structure of wax matrix for the flange department intensity of wax matrix is higher, is difficult for taking place bending deformation. 2. The wax blocks are fed so that the flange is fully fed, and the shrinkage of the wax mould at the position is avoided; 3. the die is convenient to use and withdraw, not only can be used for forming the elbow, but also can solve the problem of elbow forming of the flange.

Drawings

Fig. 1 is a schematic structural view of an automatic wax injection mold for elbow flanges of the present utility model.

Fig. 2 is a schematic view of the structure of the elbow flange processed according to the present utility model.

Fig. 3 is a schematic view of the structure of the upper die and the lower die in fig. 1 when they are not closed.

Fig. 4 is a schematic view of the upper die of fig. 1 at another angle.

Fig. 5 is a schematic structural view of the flange slider, the first core-pulling device, the second core-pulling device and the wax mold in fig. 3.

Fig. 6 is a partial cross-sectional view of the upper and lower molds of fig. 1 when they are clamped.

Reference numerals illustrate:

1-upper die 2-lower die

21-guide groove 31-wax channel

32-wax mold cavity 33-flange slide cavity

34-core drawing cavity 4-flange slide block

41-Flange cavity 42-bump

43-groove 5-driving device

51-drive seat 52-deflector rod

61-first core-pulling 62-second core-pulling

7-limiting block 8-telescopic cylinder

9-wax pattern.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the utility model.

Fig. 2 is a to-be-cast elbow flange, which is a 90-degree elbow, and for the technical scheme, other angles of elbow are also possible, and only the angles of the first loose core 61 and the second loose core 62 need to be adjusted; for a typical elbow flange, the flange is located at the port, and the flange of the present application is located at the corner. For the elbow flange, the present application can process its corresponding wax pattern for investment casting. Specifically, as shown in fig. 1 to 6, the automatic wax injection mold for the elbow flange of the present embodiment includes an upper mold 1 and a lower mold 2, a cavity is provided between the upper mold 1 and the lower mold 2, the cavity includes a wax channel 31 and a wax mold cavity 32, each wax mold cavity is provided with a flange slide block cavity 33 and two core-pulling cavities 34, a flange slide block 4 is provided in the flange slide block cavity 33, the lower mold 2 is provided with a driving device 5 for driving the flange slide block 4 to slidingly connect with the lower mold 2 along a parting plane, a flange cavity 41 for coating the flange is provided on a side surface of the flange slide block 4, a bump 42 for forming a flange connecting hole and a groove 43 for forming a feeding wax block at an outer end of the flange are provided in the flange cavity 41, and a first core-pulling 61 and a second core-pulling 62 for forming the interior of the wax mold are provided in the two core-pulling cavities 34.

Further, the front end of the bump 42 abuts against the upper die 1 or the lower die 2. In this embodiment, there are two protrusions 42, and two through holes may be formed at the flange.

Further, the lower die 2 is provided with a plurality of T-shaped guide grooves 21, and the flange slide block 4, the first core-pulling block 61 and the second core-pulling block 62 are respectively connected with the lower die 2 in a sliding manner through the guide grooves 21. The guiding groove 21 is positioned below the upper surface of the lower die 2, and the guiding groove 21 provides guiding for the flange slide block 4, the first core-pulling 61 and the second core-pulling 62, and limits the sliding position of the flange slide block. Correspondingly, the first core-pulling device 61 and the second core-pulling device 62 are respectively provided with a limiting block 7, the bottom of the limiting block 7 is a T-shaped guide block which is in sliding connection with the guide groove 21, and when the limiting block 7 slides to two ends of the guide groove 21, the end parts of the guide groove 21 are abutted against the limiting block 7.

Further, a plurality of telescopic cylinders 8 for driving the first core-pulling device 61 and the second core-pulling device 62 are arranged on the side face of the lower die 2, the front ends of telescopic rods of the telescopic cylinders 8 are connected with the limiting blocks 7, and the first core-pulling device 61 and the second core-pulling device 62 automatically stretch through the telescopic cylinders 8.

In order to improve the processing efficiency, the cavity of the present embodiment includes four wax mold cavities 32, where the four wax mold cavities 32 are rectangular and symmetrically arranged, and four flange slide cavities 33 are near the middle of the lower mold 2.

In this embodiment, four flange sliders 4 are driven simultaneously by a single driving device 5. In implementation, the telescopic distances of the four flange sliding blocks 4 are the same, and in order to embody the working state in the drawings 1 and 3, the four flange sliding blocks 4, the corresponding first core pulling 61 and the second core pulling 62 are respectively located at different telescopic positions.

Further, the driving device 5 includes a driving seat 51 that can move along a vertical direction, the driving seat 51 is located below the lower die 2, the driving seat 51 is provided with four driving levers 52, the flange slider 4 is provided with a through hole that is obliquely arranged, and the driving levers 52 are slidably connected with the flange slider 4 through the through hole. The driving shaft 51 is driven to move up and down by a hydraulic cylinder or an air cylinder, so that the flange slide block 4 can stretch out and draw back in the horizontal direction, and is used for forming a wax pattern when stretching out and withdrawing the pattern when retracting back.

Further, the wax channel 31 includes a first wax channel in a straight shape, and an i-shaped second wax channel, where the first wax channel extends from a side surface to a middle of the lower die 2 and is connected to a center of the second wax channel, and four end points of the second wax channel extend to the four wax die cavities 32.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims

1. A automatic wax injection mould for elbow flange, its characterized in that: including last mould (1), lower mould (2), be provided with the cavity between last mould (1) and the lower mould (2), the cavity includes wax way (31), wax mould chamber (32), and every wax mould chamber sets up a flange slider chamber (33), two core-pulling chamber (34), be provided with flange slider (4) in flange slider chamber (33), lower mould (2) are provided with the drive flange slider (4) along the parting plane with drive arrangement (5) of lower mould (2) sliding connection, the side of flange slider (4) is provided with flange chamber (41) that are used for cladding flange, be provided with lug (42) that are used for shaping flange connecting hole in flange chamber (41), be used for in flange outer end shaping feed wax stone's recess (43), be provided with in two core-pulling chamber (34) and be used for the inside first core (61) of shaping wax mould and second core-pulling (62).

2. An automatic wax injection mold for elbow flanges as in claim 1, wherein: the front end of the protruding block (42) can be abutted against the upper die (1) or the lower die (2).

3. An automatic wax injection mold for elbow flanges as in claim 1, wherein: the lower die (2) is provided with a plurality of T-shaped guide grooves (21), and the flange sliding block (4), the first core pulling block (61) and the second core pulling block (62) are respectively connected with the lower die (2) in a sliding mode through the guide grooves (21).

4. An automatic wax injection mold for elbow flanges as in claim 3, wherein: the first core pulling device is characterized in that a limiting block (7) is arranged at the bottom of the first core pulling device (61) and the second core pulling device (62) respectively, the bottom of the limiting block (7) is a T-shaped guide block which is in sliding connection with the guide groove (21), and when the limiting block (7) slides to the two ends of the guide groove (21), the end part of the guide groove (21) abuts against the limiting block (7).

5. The automatic wax injection mold for elbow flanges as in claim 4, wherein: the side of lower mould (2) is provided with a plurality of telescopic cylinder (8) that are used for driving first loose core (61) and second loose core (62), telescopic cylinder (8) telescopic link front end with stopper (7) are connected.

6. An automatic wax injection mold for elbow flanges as in claim 3, wherein: the cavity comprises four wax pattern cavities (32), the four wax pattern cavities (32) are distributed in a rectangular mode and are symmetrically arranged, and the four flange sliding block cavities (33) are close to the middle of the lower die (2).

7. The automatic wax injection mold for elbow flanges as in claim 6, wherein: the driving device (5) comprises a driving seat (51) capable of moving along the vertical direction, the driving seat (51) is located below the lower die (2), the driving seat (51) is provided with four deflector rods (52), the flange sliding block (4) is provided with a through hole which is obliquely arranged, and the deflector rods (52) are in sliding connection with the flange sliding block (4) through the through hole.

8. The automatic wax injection mold for elbow flanges as in claim 6, wherein: the wax channel (31) comprises a first wax channel in a shape of a Chinese character 'I', and a second wax channel in a shape of an I, wherein the first wax channel extends from the side face of the lower die (2) to the middle part and is communicated with the center of the second wax channel, and four end points of the second wax channel extend to the four wax die cavities (32).