Device for positioning core assembly and method of using the same

Abstract

A core assembly positioning device belongs to the field of casting technology and is used to solve the problem of sand core assembly position accuracy in the core assembly process. The core assembly positioning device includes a ground guide rail, at least one set of core assembly brackets and core inspection brackets. The core assembly brackets and core inspection brackets are arranged on the ground guide rails and can reciprocate along the ground guide rails. The core inspection brackets are composed of core assembly brackets and core inspection components. The core inspection components are used to check the verticality of the sand core placed on the core assembly brackets. The core assembly positioning device of the present invention, by providing core assembly brackets and core inspection brackets that can move on the ground guide rails, realizes that the sand core assembly that meets the verticality requirements is qualified as a product, and avoids the problem of unqualified casting contour dimensions caused by core assembly misalignment.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a device for core assembly casting of large and long strip castings. Background Art

[0002] In sand casting, firstly, intermediate products such as sand cores, sand molds or moldings are manufactured to form the casting cavity. In traditional casting technology, sand cores and sand molds are made by flowing sand and molds. After the sand cores and sand molds are assembled, a complete casting cavity is formed. The molten metal is injected into the cavity and solidified to form a casting. When producing large and long castings, the sand cores forming the casting cavity need to be cut into several pieces (pieces). After the production of each piece of sand core, the pieces of sand core are assembled into a whole again. During the whole assembly process, the pieces of sand cores are often unevenly assembled, resulting in the misalignment of the casting cavity, causing the casting product contour size to exceed the tolerance, or the product contour to be distorted and deformed, resulting in the scrapping of the product, which causes a great waste of production costs. Summary of the invention

[0003] In view of the above problems that the size and position of the sand core assembly of large and long castings are difficult to control, it is necessary to propose a core assembly positioning device, which can eliminate unqualified sand cores by core inspection and ensure the accuracy of the casting cavity after core assembly.

[0004] A core assembly positioning device comprises a ground guide rail and at least one set of core verification brackets. The ground guide rails are provided in pairs of two to form a bottom structure for carrying the core verification brackets. That is, the core verification brackets are arranged on the ground guide rails and can slide on the ground guide rails, thereby realizing the core assembly function. The core assembly bracket includes a cross support, a sand core support plate, a sand core positioning platform, an operating clamp and a driving member, the sand core support plate is arranged on the cross support, the sand core positioning platform is arranged on the sand core support plate, the operating clamp is arranged below the cross support and is connected to the ground guide rail, the driving member is provided with a connecting member and a rocking member, one end of the connecting member is connected to the operating clamp and the other end is provided with a rocking member; the driving member is used to make the core assembly bracket reciprocate on the ground guide rail; the operating clamp realizes the connection between the core assembly bracket and the ground guide rail; the sand core positioning platform is used to support the sand core so that the sand core can be stably seated on the sand core support plate, or the sand core positioning platform cooperates with the positioning structure reserved on the sand core to ensure that the sand core can stand stably on the sand core support plate; the sand core support plate is used to expand the contact area between the sand core and the core assembly bracket, thereby improving the standing stability of the sand core on the core assembly bracket. The core inspection bracket is composed of a core assembly bracket and a core inspection component. The core inspection component includes a base, a pillar, and a detection plate. The base is arranged on the sand core support plate of the core assembly bracket. One end of the pillar is connected to the base. The other end of the pillar is provided with a pillar bracket. The pillar bracket is provided with a first card slot and a second card slot. The first card slot is used to connect the detection plate. The second card slot is provided with a distance measuring piece for monitoring the moving distance of the detection plate.

[0005] Preferably, the core assembly bracket and the core inspection bracket are gear-connected with the ground rail, that is, the ground rail and the running fixture are in a rack meshing relationship. The core assembly bracket moves on the ground rail through a driving member arranged on the running fixture.

[0006] Preferably, in order to save the production of the core assembly bracket and ensure the rigidity of the core assembly bracket, the sand core support plate is arranged to be two sections symmetrically distributed at both ends above the cross support, and the sand core support plate can be moved on the cross support, that is, the sand core support plate can move toward or relative to each other along the length direction of the cross support, thereby achieving the purpose of adjusting the distance between the two sections of the sand core support plate.

[0007] Preferably, in order to enable the sand core positioning platform to match the positioning direction reserved on the sand core, the sand core positioning platform and the sand core support plate are movably connected, that is, the two sand core positioning platforms located on the two sections of the sand core support plate can also move toward or relative to each other, so as to adjust the distance between the two. Through the movability of the sand core support plate and the sand core positioning platform, the core assembly of different series of sand cores is conveniently realized, and the application range of the core assembly positioning device is improved.

[0008] Preferably, the detection plate is used to verify the verticality of the sand core. The detection plate is arranged on a pillar, and the displacement of the detection plate in the width direction relative to the core assembly bracket can be adjusted to adapt to sand cores of different thicknesses.

[0009] Preferably, the core inspection assembly is connected to the core assembly bracket via a base.

[0010] The method of using the core assembly positioning device is as follows:

[0011] S001, placing the core inspection assembly on a set of core brackets;

[0012] S002, adjusting the distance between the two sections of the sand core supporting plates and the distance between the two sand core positioning platforms according to the length of the sand core to be assembled;

[0013] S003, placing the sand core to be assembled after inspection on the core inspection bracket, adjusting the inspection plate so that the inspection plate is close to the sand core. If the surface of the inspection plate is tightly fitted with the surface of the sand core, it means that the verticality of the sand core meets the requirement; otherwise, the verticality of the sand core does not meet the requirement;

[0014] S004, transfer the sand core that meets the verticality requirement to the core assembly bracket;

[0015] S005, driving the core assembly bracket with the sand core to a specified position;

[0016] S006, repeat S003 to S005 until the core assembly is completed.

[0017] Beneficial effects of the technical solution of the present invention: The core assembly positioning device of the present invention, by providing a core assembly bracket and a core inspection bracket that can move on a ground guide rail, realizes that the sand core assembly with verticality meeting the requirements is a qualified product, thereby avoiding the problem of unqualified casting contour dimensions caused by core assembly misalignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the core test bracket structure;

[0019] Figure 2 This is a partial enlarged schematic diagram of the support bracket;.

[0020] Figure 3 It is a schematic diagram of the core assembly status;

[0021] In the figure, 1-ground guide rail; 2-core assembly bracket; 201-sand core support plate; 202-sand core positioning platform; 203-operating card; 204-driving member; 205-cross support; 3-core inspection assembly; 301-base; 302-pillar; 303-pillar bracket; 3031-slot one; 3032-slot two; 304-detection plate; 305-distance measuring member; 4-sand core. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solution of the present invention, it will be described in detail according to the embodiments of the accompanying drawings. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] like Figure 1 The core inspection bracket shown in the figure is composed of a core assembly bracket 2 and a core inspection assembly 3. The core assembly bracket 2 includes a cross support 205, a sand core support plate 201, a sand core positioning platform 202, a running clamp 203 and a driving member 204. Figure 1In the specific structure, the core inspection bracket is connected to the ground guide rail 1 through the running clamp 203, that is, the running clamp 203 is provided with teeth that can cooperate with the teeth of the ground guide rail 1, so as to realize the meshing of the block-shaped running clamp 203 and the rack-shaped ground guide rail 1, thereby effectively controlling the precise positioning and running stability of the core assembly bracket 2 on the ground guide rail 1; the cross support 205 is arranged on the ground guide rail 1 through the two running clamps 203 arranged below it, and the cross support 205 can be made of a structure with a certain rigidity such as square steel. In order to improve the bearing capacity of the cross support 205, a pad can be arranged between the sand core support plate 201 and the cross support 205, and the pad can be arranged on the cross support for a full length, or it can be arranged only on the contact surface between the sand core support plate 201 and the cross support 205; the sand core positioning platform 202 is arranged on the sand core support plate 201, and is used to cooperate with the positioning area reserved on the sand core to stabilize the sand core. The core inspection assembly 3 includes a base 301, a pillar 302, a pillar bracket 303 and a detection plate 304, wherein the base 301 is used to fix the core inspection assembly on the core assembly bracket 2, and can be connected by pins or bolts; one end of the pillar 302 is connected to the base 301, and the other end is provided with the pillar bracket 303; the pillar bracket 303 is provided with a first card slot 3031 and a second card slot 3032, the first card slot 3031 is used to install the detection plate 304, and the second card slot 3032 is used to install a distance measuring piece 305, and the distance measuring piece 305 is used to monitor the moving distance of the detection plate 304, so that the core inspection bracket can check sand cores of various thicknesses; the detection plate 304 is a flat plate structure, and the verticality of the sand core placed on the sand core support plate 201 is ensured by the detection plate 304 of the standard sample, so as to ensure the accuracy of the cavity structure after the core assembly.

[0024] As an improvement of this embodiment, the width of the sand core support plate 201 and the pad arranged between the sand core support plate 201 and the cross support 205 are the same, and the width of the sand core support plate 201 is smaller than the width of the coreable sand core, thereby ensuring that the sand cores can be in close contact. At the same time, the maximum width of the sand core support plate 201 does not exceed 210 mm.

[0025] As an improvement of this embodiment, the driving member 204 is a rocker structure, which is respectively provided with a connecting member and a rocking member. One end of the connecting member is connected to the running card 203, and the other end is sleeved with the rocking member. The rocking member can be easily inserted into the other end of the connecting member, and by shaking the rocking member, the core bracket 2 can be reciprocated on the ground guide rail 1.

[0026] As an improvement of this embodiment, the distance measuring member 305 may be a steel ruler disposed in the second slot 3032 .

[0027] in accordance with Figure 3 The core group state diagram is used to describe the method of using the core group positioning device:

[0028] S101, install the core inspection assembly 3 on the outermost set of core assembly brackets 2 to form a core inspection bracket, and adjust the support 302 to half the height of the sand core according to the height of the sand core to be assembled, and then adjust the position of the inspection plate 304 according to the thickness of the sand core;

[0029] S102, starting from the core inspection bracket, selecting eight sets of the core assembly brackets 2 in sequence, isolating the remaining redundant core assembly brackets 2 on the ground guide rail 1 from the selected eight sets of core assembly brackets 2, and setting position locking points so that the core assembly can be close to each other;

[0030] S103, adjusting the distance between the two sections of the sand core support plate 201 so that the two sand core positioning platforms 202 are within the range of the positioning area of ​​the sand core to be checked, and then adjusting the sand core positioning platforms 202 so that the two sand core positioning platforms 202 are aligned with the positioning area reserved on the sand core to be checked, and realizing the precise adjustment of the core assembly bracket 2 through two-stage adjustment;

[0031] S104, placing the first sand core on the core inspection bracket. If the surface of the sand core fits tightly with the inspection plate 304, the verticality of the first sand core meets the requirement; if the surface of the sand core does not fit tightly with the inspection plate 304 and forms a certain angle, the verticality of the first sand core does not meet the requirement;

[0032] S105, placing the first sand core that meets the verticality requirement on the set of core assembly brackets 2 farthest from the core inspection bracket among the selected eight sets, and shaking the core assembly bracket 2 with the first sand core to a set position locking point;

[0033] S106, repeating S104 and S105 to complete the verification and core assembly of the second to eighth sand cores;

[0034] S107, after the core package is assembled, it is clamped and transported to the casting area for casting.

[0035] One embodiment of the present invention is to assemble a set of core inspection brackets and a set of core assembly brackets 2 on the ground guide rail 1. This situation can be used for core assembly in which only two sand cores can form the overall cavity of the casting. At this time, the use of the core assembly positioning device is to first inspect the 1# sand core to be assembled on the core inspection bracket, and after the inspection is qualified, the 1# sand core is transferred to the core assembly bracket 2, and the core assembly bracket with the 1# sand core is shaken to the specified position; then the 2# sand core is inspected on the core inspection bracket, and after the inspection is qualified, the core inspection assembly on the core inspection bracket is removed, and the driving member 204 is installed on the running card 203, and then the core inspection bracket with the 2# sand core is shaken to the core assembly bracket 2 with the 1# sand core, and the two are tightly pressed together, thereby completing the assembly of the casting core body composed of two sand cores.

[0036] Another embodiment of the present invention is that the core assembly positioning device is applicable to the case where a casting cavity is composed of at least three sand cores. At this time, at least two sets of core assembly brackets 2 and one set of core inspection brackets can be configured on the ground guide rail 1. The specific operation method is the same as above and will not be repeated here.

[0037] Another embodiment of the present invention is that the core inspection bracket does not participate in the core assembly. When the casting cavity is composed of only two sand cores, two groups of core assembly brackets 2 and one group of core inspection brackets need to be configured on the ground guide rail 1; when the casting cavity is composed of at least three sand cores, at least three groups of core assembly brackets 2 and one group of core inspection brackets need to be configured on the ground guide rail 1.

[0038] The above embodiments are only two typical cases of the present invention and do not limit the technical solution of the present invention. Reasonable inferences and extensions obtained based on the technical solution of the present invention without creative labor all fall within the scope of the technical solution of the present invention.

Claims

1. A core assembly positioning device, characterized in that: The core assembly positioning device comprises a ground guide rail (1) and at least one set of core inspection brackets. The core inspection brackets are arranged on the ground guide rail (1) and can reciprocate along the ground guide rail (1). The core inspection brackets are composed of a core assembly bracket (2) and a core inspection assembly (3). The core inspection assembly (3) is used to check the verticality of a sand core (4) placed on the core assembly bracket (2). The core inspection assembly (3) comprises a base (301), a support (302), and a detection plate (304). The core inspection assembly (3) is connected to the core assembly bracket (2) via the base (301). One end of the support (302) is connected to the support bracket (2). On the base (301), a support bracket (303) is provided at the other end of the support (302); a first card slot (3031) and a second card slot (3032) are provided on the support bracket (303); the first card slot (3031) is used to connect the detection plate (304); a distance measuring piece (305) is provided in the second card slot (3032); the detection plate (304) can slide along the first card slot (3031); the distance measuring piece (305) can monitor the moving distance of the detection plate (304); the detection plate (304) is a flat plate; and the distance measuring piece (305) is a steel ruler.

2. The core assembly positioning device according to claim 1, characterized in that: The ground guide rails (1) are provided with two parallel ones.

3. The core assembly positioning device according to claim 2, characterized in that: The core assembly bracket (2) comprises a transverse support (205), a sand core support plate (201), a sand core positioning platform (202) and an operating clamp (203); a sand core support plate (201) is arranged above the transverse support (205), two operating clamps (203) are symmetrically arranged below the transverse support (205), and the operating clamps (203) are directly connected to the ground guide rail (1); a sand core positioning platform (202) is arranged above the sand core support plate (201); the width of the sand core support plate (201) is greater than the width of the transverse support (205).

4. The core assembly positioning device according to claim 3, characterized in that: The core assembly bracket (2) is also provided with a driving member (204), the driving member (204) comprising a connecting member and a rocking member, one end of the connecting member is connected to the running clamp, the other end of the connecting member is provided with a rocking member, and the rocking member is sleeved on the connecting member.

5. The core assembly positioning device according to claim 3, characterized in that: The sand core supporting plate (201) is divided into two sections, which are symmetrically arranged at the two ends of the transverse support (205), and the two sections of the sand core supporting plate (201) can reciprocate along the length direction of the transverse support (205).

6. The core assembly positioning device according to claim 3, characterized in that: The sand core positioning platform (202) is movable relative to the sand core supporting plate (201) to achieve accurate positioning of the sand core (4).

7. The core assembly positioning device according to any one of claims 1 to 6, characterized in that: The ground guide rail (1) and the core assembly bracket (2) are toothed, thereby achieving precise control of displacement.

8. A method for using a core assembly positioning device, using the core assembly positioning device according to any one of claims 1 to 7, comprising the following contents: S001, placing the verified and qualified core inspection assembly (3) on the starting core assembly bracket (2) at one end of the ground guide rail (1); S002, according to the number of sand cores (4), select a suitable number of core assembly brackets (2), and adjust the sand core support plate (201), the sand core positioning platform (202) and the detection plate (304) according to the size of the sand core (4); S003, placing the first sand core on the core inspection bracket according to the core assembly sequence. If the surface of the sand core fits tightly with the inspection plate (304), the verticality of the sand core meets the requirement; if the surface of the sand core forms a certain angle with the inspection plate (304), the verticality of the sand core does not meet the requirement; S004, transferring the first sand core that has passed the inspection to the core assembly bracket (2) that is farthest from the core inspection bracket, and moving the core assembly bracket (2) on which the first sand core is placed to a position locking point; S005, repeat S003 to S004, start the core assembly of the first sand core, and complete the core assembly of the entire core package.

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