CN113145794A

CN113145794A - A can type pattern for large-scale cylinder body

Info

Publication number: CN113145794A
Application number: CN202110464519.5A
Authority: CN
Inventors: 戚梦林; 何媛; 苏少静; 宋亮; 陈思明; 陈洪涛
Original assignee: Kocel Machinery Co Ltd
Current assignee: Kocel Machinery Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-07-23
Anticipated expiration: 2041-04-29
Also published as: CN113145794B

Abstract

The invention relates to a casting die, in particular to a die suitable for a large cylinder body and capable of being shaped; comprises a pattern main body, a shaping auxiliary component, a movable material and a counterweight; the pattern main body comprises a wood member and a steel body member, and the steel body member comprises a member main body and a plurality of raised parts; the member main body is arranged in the inner cavity of the wood member, the first end of the raised part is connected with the member main body, and the second end of the raised part extends out of the inner cavity of the wood member; the living material is detachably connected to the upper side of the wood member; the second end is connected with a shaping pad; the lifting auxiliary component is connected above the lifting pad and matched with the lifting pad for lifting; the counterweight is arranged on the pattern body; the mold opening device can be used for efficiently opening the middle ring of the large-scale cylinder mold, is simple to operate and small in difficulty, is not easy to damage a sand mold and the mold, and effectively improves the dimensional stability of a casting and the service life of the mold.

Description

A can type pattern for large-scale cylinder body

Technical Field

The invention relates to a casting die, in particular to a die with a shaping function, which is suitable for a large cylinder body.

Background

Large cylinders typically weigh more than 10 tons and are larger than 4m 3m 1.5m in size. The blank of the large cylinder block is usually a casting, and the most common forming method of the casting is wood pattern sand casting. Because the large-scale cylinder body casting has large size, when the template is adopted for molding, the template has high cost and is easy to deform, and the large-scale cylinder body casting is usually produced in a template-free molding mode. And usually, the casting direction selects the middle dividing flange face to face downwards, and the middle dividing flange face is used as a parting surface. Meanwhile, the method is limited by the hoisting weight of a factory crane, is convenient to operate and is based on safety consideration, and the parting mode usually adopts a mode of upper type + lower type + more than 1 middle ring.

In the prior art, large cylinder body castings are produced in a template-free molding mode. During modeling, after a lower sand mold is firstly formed on a modeling platform, sand flows in sequence to complete a cylinder body middle ring sand mold and an upper sand mold. When the mold is lifted, the upper sand mold is lifted first, and then the cylinder body middle ring is lifted in sequence, but when the cylinder body middle ring is lifted, due to the small demolding inclination, the mold cannot be separated from the sand mold only by the dead weight of the mold, an experienced worker needs to spend a large amount of time to pound and hit the whole mold and the sand mold to separate the sand mold from the mold, or the mold is lifted by adopting a crane to lift a mold sample after turning over the mold, but the mold and the sand mold are difficult to separate, the operation is complex, the sand mold is easy to damage, and the danger is very high.

Disclosure of Invention

The invention overcomes the problem that the last middle ring is difficult to lift when a large cylinder body mould in the prior art is molded, and provides a lift-type mould sample and a lift-type method for a large cylinder body.

A kind of very lift type model used for large-scale cylinder block, including model body, lift type auxiliary member, live material, counterweight; the pattern main body comprises a wood member and a steel body member, and the steel body member comprises a member main body and a plurality of raised parts; the member main body is arranged in the inner cavity of the wood member, the first end of the raised part is connected with the member main body, and the second end of the raised part extends out of the inner cavity of the wood member; the living material is detachably connected to the upper side of the wood member; the second end is connected with a shaping pad; the lifting auxiliary component is connected above the lifting pad and matched with the lifting pad for lifting; the weight member is disposed on the pattern body.

In one embodiment, the steel body member further comprises a counterweight support platform disposed at the top of the member body and correspondingly below the material moving position.

In one embodiment, the member body is a bracket structure, and the first end extends perpendicular to a bracket bottom of the member body.

In one embodiment, the top of the wood member is provided with a bearing platform.

In one embodiment, the weight support platform is correspondingly connected with the load bearing platform.

In one embodiment, the live material and the wood member are arranged in a concave-convex structure, the live material is arranged in a convex structure, and the live material is arranged in a concave structure corresponding to the wood member.

In one embodiment, the middle position of the shaping pad is provided with a shaping groove.

In one embodiment, the lift assist member includes a sleeve and a force directing bar disposed inside the sleeve.

In one embodiment, the force guide rod is fixed in the profile groove, and the sleeve is connected with the profile pad.

A method for using a removable pattern for a large cylinder is characterized by comprising the following steps,

firstly, modeling the lower part of a cylinder body, then placing a moldable pattern of the large cylinder body above the lower part of the cylinder body to model a middle ring of a first cylinder body, embedding the sleeve on the moldable pad, placing the movable material to model a middle ring of a second cylinder body, and finally modeling the upper part of the cylinder body;

when the cylinder is started, the upper part of the cylinder body and the middle ring of the second cylinder body are respectively dismounted;

replacing the live material with the counterweight and placing the counterweight on the load-bearing platform;

and penetrating the force guide rod through the sleeve and knocking the force guide rod to finish the forming of the middle ring of the first cylinder body.

The invention discloses a method for rising a large cylinder body mould, which overcomes the difficulty of the large cylinder body mould in the prior art that the mould is difficult to be circled, and provides the method for rising the large cylinder body mould, wherein the method for rising the large cylinder body mould avoids the problem that a middle ring cannot rise and the operation of turning over a box during rising. The mold opening of the middle ring of the large-scale cylinder body mold can be efficiently carried out, the operation is simple, the difficulty is small, the sand mold and the mold are not easy to damage, the size stability of a casting is effectively improved, and the service life of the mold is prolonged.

Drawings

FIG. 1 is a schematic view of a moldable pattern for a large cylinder block;

FIG. 2 is a schematic view of a steel body;

FIG. 3 is an enlarged view of the start pad at A;

FIG. 4 is a schematic view of a formable pattern when the pattern is formed after placement of a weight member;

FIG. 5 is a schematic structural view of a start-up auxiliary member at B;

fig. 6 is a schematic diagram of the modeling structure of the large cylinder body.

Wherein, 1-a counterweight; 2-a wood member; 3-a load-bearing platform; 4-a steel body main body; 41-a member body; 42-raised portion; 43-a counterweight support platform; 5-lift pad; 7-forming a groove; 8-force guide rod; 9-activating materials; 10-a sleeve; 11-bearing cap; 12-the lower part of the cylinder body; 13-first cylinder body middle ring; 14-a second cylinder body middle ring; 15-upper part of cylinder body.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the present invention is further described in detail with reference to the following specific examples. Note that the following described embodiments are illustrative only for explaining the present invention, and are not to be construed as limiting the present invention.

The pattern in casting refers to process equipment or consumable parts for simulating the shape of a casting to form a casting mold cavity; to ensure that a desired cavity is formed, the pattern should have sufficient strength, rigidity, and appropriate surface and dimensional accuracy. When a large-scale cylinder body mold is molded, the large-scale cylinder body mold is divided into a cylinder body upper part, a second cylinder body middle ring, a first cylinder body middle ring and a cylinder body lower part during molding, in the prior art, the mold is difficult to be circled in the first cylinder body, the mold and a sand mold are not easy to separate, the operation is complex, and the sand mold is easy to damage.

The invention provides a removable type pattern for a large cylinder body, which comprises a pattern main body, a removal auxiliary component, a movable material and a counterweight.

The pattern body comprises a wood member 2 and a steel member 4. The material of the wood member 2 and the cylinder member 4 is not limited, and in the present embodiment, the wood member 2 is made of wood material, and the steel member 4 is made of steel material. Referring to fig. 1, the essential component 2 follows the first cylinder body middle ring, the large cylinder body liftable pattern further comprises a movable material 9, and the wood component 2 and the movable material 9 are assembled to form the appearance of the large cylinder body liftable pattern, namely the shape structure of the first cylinder body middle ring and the second cylinder body middle ring. The top of the wood member 2 is provided with the bearing platform 3, and with reference to fig. 2, the bearing platform 3 and the counterweight support platform 43 are connected in the same number, and can cooperate with the counterweight support platform 43 to support the counterweight 1. The movable material 9 and the wood member 2 can be assembled, the movable material 9 can be detachably connected with the wood member 2, the movable material 9 and the wood member 2 are arranged to be of a concave-convex structure, the movable material 9 is arranged to be of a convex structure and is arranged to be of a concave structure corresponding to the wood member 2, and therefore the movable material and the wood member can be conveniently and accurately positioned and assembled and the balance weight piece can be prevented from sliding towards two sides in the forming process.

Referring to fig. 2, the steel body member 4 includes a member main body 41, a swage portion 42, and a weight support platform 43. The member body 41 is preferably made of structural steel, is a frame structure, and is arranged inside the pattern body, namely is arranged at a main bearing part inside the pattern and extends to a rising part of the pattern, so that the strength of the pattern body is enhanced; the member body is composed of a plurality of supports, three raised parts extend from two sides of the support of the bottommost member body, so that the first ends of the raised parts are connected with the member body, the first ends extend, and the first ends of the raised parts extend to the outside of the model body to be used as the second ends of the raised parts. The counterweight support platform 43 is disposed on the top of the member body 41, the counterweight support platform 43 is also made of steel and used for supporting a counterweight, and in order to ensure that the counterweight can be stably placed in the later period, three counterweight support platforms 43 are disposed on the top of the member body 41. A rising pad 5 is provided on a second end of the rising portion extending to the outside. The rising pad 5 is connected with the second end, and the rising part is mainly arranged at the position where the member main body 41 is not easy to rise, namely the position where the rising part is not easy to rise is used as the key position of the later rising. Referring to fig. 3, the rising pad 5 is further provided with a rising groove 7, the rising groove 7 is provided at the middle position of the rising pad 43, is a circular groove of 10mm to 30mm, and is matched with the rising auxiliary member 8 for rising.

Further, with reference to fig. 4 and 5, the movable material 9 may be detached and replaced with the weight member 1, and the weight member 1 is made of a metal material with a relatively high density. The counterweight is placed on the counterweight platform during the shaping process and is used for increasing the weight of the pattern. The weight member 1 can be selected from 5 t-50 t according to the size of the pattern and the forming difficulty. Fig. 5 shows that the rising auxiliary member includes a sleeve 10 and a force-guiding rod 8, and the sleeve 10 may be made of a material with high strength, such as a ceramic tube or a steel tube. The sleeve 10 is used for forming a vertical passage in the sand mold and preventing the sand mold from being damaged when the force guide rod 8 is hit, the inner diameter of the sleeve 10 can be 40-80 mm, and the outer diameter of the sleeve 10 is smaller than the size of the lifting pad 5.

Further, the force guide rod 8 can be a steel rod. The force guide rod 8 is arranged inside the sleeve 10, when the force guide rod 8 is used, the force guide rod 8 penetrates through the sleeve 10 from the top of the sleeve 10 and is fixed in the forming groove 7, the upper portion of the force guide rod 8 is provided with a bearing cap 11, and the diameter of the bearing cap 11 is 100 mm-150 mm. The bearing cap 11 bears the external stress during the mold lifting, prevents the sand mold from being mistakenly hammered, and transmits the impact force to the mold through the force guide rod 8 and the mold lifting pad 43. The diameter of the force guide rod 8 is 5-10 mm smaller than that of the sleeve, 2-5 mm smaller than that of the groove 7, and the length of the force guide rod 8 is 50-100 mm higher than that of the sleeve 10.

With reference to fig. 4-6, the method for using the removable pattern for the large cylinder includes, according to fig. 6, first molding the lower part 12 of the cylinder, then placing the removable pattern body of the large cylinder above the lower part 12 of the cylinder to form a first cylinder middle ring 13, embedding the sleeve 10 on the removable pad, placing the active material 9, forming a second cylinder middle ring 14, and finally molding the upper part 15 of the cylinder; when in mold opening, the upper part 15 of the cylinder body and the middle ring 14 of the second cylinder body are respectively molded by sand;

placing a weight part 1 on a bearing platform of the middle ring of the first cylinder body, enabling a force guide rod 8 to penetrate through a sleeve 10 to be connected with a shaping groove 7, and knocking the force guide rod 8 to finish shaping of the middle ring of the first cylinder body. The mold opening method of the large cylinder body mold in the embodiment avoids the problem that the middle ring of the first cylinder body cannot be opened and the operation of turning over the mold during mold opening, can efficiently open the middle ring of the large cylinder body mold, is simple during operation, cannot damage sand molds and molds easily, and can effectively improve the size stability of castings and prolong the service life of the molds.

Although embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, that various changes, modifications, substitutions and alterations may be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A removable pattern for a large cylinder block, characterized in that,

comprises a pattern main body, a shaping auxiliary component, a movable material and a counterweight;

the pattern main body comprises a wood member and a steel body member, and the steel body member comprises a member main body and a plurality of raised parts; the member main body is arranged in the inner cavity of the wood member, the first end of the raised part is connected with the member main body, and the second end of the raised part extends out of the inner cavity of the wood member;

the living material is detachably connected to the upper side of the wood member;

the second end is connected with a shaping pad;

the lifting auxiliary component is connected above the lifting pad and matched with the lifting pad for lifting;

the weight member is disposed on the pattern body.

2. The removable pattern for large cylinders according to claim 1, wherein the steel body member further comprises a weight support platform disposed at the top of the member body and correspondingly below the material activating position.

3. The lift pattern for large cylinders according to claim 2, wherein the member body is a bracket structure, and the first end extends perpendicular to a bracket bottom of the member body.

4. A lift-off pattern for large cylinders according to claim 3, characterised in that the top of the wooden element is provided with a load-bearing platform.

5. The removable pattern for large cylinders according to claim 4, wherein the weight-bearing platform is connected to the weight-bearing platform.

6. A lift-off pattern for large cylinders according to claim 1, characterised in that the active material and the wooden elements are arranged in a male-female configuration, the active material being arranged in a male configuration and corresponding to the wooden elements in a female configuration.

7. The lift pattern for large cylinders according to claim 1, wherein a lift groove is provided at a middle position of the lift pad.

8. The lift pattern for large cylinders according to claim 7, wherein the lift assist member comprises a sleeve and a force guide rod, the force guide rod being disposed inside the sleeve.

9. The lift pattern for large cylinders according to claim 8, wherein the force bar is fixed in the lift groove and the sleeve is connected to the lift pad.

10. Use of the removable pattern for large cylinders according to any one of claims 1 to 9, comprising the steps of,