A cold iron extraction mechanism and working method thereof

Abstract

The present invention provides a chiller extraction mechanism and a working method thereof, the chiller extraction mechanism comprising: a core assembly plate connected to the outer side of a bottom plate core; a fixed plate arranged on the outer side of the core assembly plate and detachably connected to the core assembly plate; a chiller is arranged on the inner side of the fixed plate, a core plate through hole is arranged on the core assembly plate for the chiller to pass through, and a bottom plate through hole corresponding to the core plate through hole is arranged on the bottom plate core, and the bottom plate through hole is for the chiller to pass through. The present invention arranges the chiller on the fixed plate located on the outer side of the core assembly plate, and then places the bottom plate core to form a low-pressure sand bag for pouring. After the pouring is completed, the fixed plate is removed from the core assembly plate, thereby driving the chiller to be extracted from the bottom plate core and the core assembly plate; compared with the method in the prior art in which the chiller is directly arranged on the bottom plate core, the present invention does not need to wait until the casting is cooled and the sand is removed before the chiller can be taken out after the pouring is completed, and the chiller can be reused as soon as possible, the utilization rate is greatly improved, and the production cost is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sand casting, in particular to a cold iron extraction mechanism used in a low-pressure sand casting process and a working method thereof. Background Art

[0002] Sand casting refers to a casting method that produces castings in sand molds, and low-pressure sand casting is one of them. During the pouring process, it is usually necessary to place chills at specific locations inside the low-pressure sand bag to improve the quality of the casting.

[0003] In the prior art, the chill is directly set on the bottom plate core of the sand bag mold, and then pouring is performed. After pouring, the chill will be wrapped inside the bottom plate core, and the chill can only be taken out after the casting cools and the sand falls off. The chill cannot be reused as soon as possible, resulting in a very low utilization rate. In addition, when mass-producing castings, multiple groups of chill inserts need to be made, and the production cost and expense are very high. Therefore, how to design a chill extraction mechanism that can improve the utilization rate of the chill and reduce the production cost is a problem that technicians in this field need to solve. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, a technical problem to be solved by the present invention is to provide a chiller extraction mechanism which can improve the chiller utilization rate and reduce the production cost.

[0005] In order to solve the above technical problems, the present invention provides a cold iron extraction mechanism, which is arranged on the outside of the bottom plate core of the sand bag mold, and the cold iron extraction mechanism includes: a core assembly plate, which is connected to the outer side surface of the bottom plate core; a fixed plate, which is arranged on the outside of the core assembly plate and is detachably connected to the core assembly plate; a cold iron is provided on the inner side surface of the fixed plate, and a core plate through hole for the cold iron to pass through is provided on the core assembly plate, and a bottom plate through hole corresponding to the core plate through hole is provided on the bottom plate core, and the bottom plate through hole is allowed to pass through by the cold iron.

[0006] Preferably, the fixing plate is provided with a separation block, the core assembly plate is provided with a separation groove for inserting the separation block, and the separation block is located outside the contour of the bottom plate core.

[0007] Furthermore, the separation blocks are an even number, all of the separation blocks constitute at least one group of block components, each group of block components includes two separation blocks, and the two separation blocks in each group of block components are arranged opposite to each other and are located on both sides of the cold iron.

[0008] Preferably, a positioning block is provided on the inner side surface of the fixing plate, and a positioning groove for inserting the positioning block is provided on the core assembly plate.

[0009] Preferably, the fixing plate is provided with a guide column, and the core assembly plate is provided with a guide hole for the guide column to be inserted into.

[0010] Furthermore, there are two guide pillars, and the cold iron is located between the two guide pillars.

[0011] Preferably, a mounting seat is provided on the fixing plate, and a fixing groove for the cold iron to be installed is provided on the mounting seat.

[0012] Preferably, a protrusion is provided on the inner side surface of the core assembly plate, and a bottom plate groove for inserting the protrusion is provided on the bottom plate core.

[0013] Another technical problem to be solved by the present invention is to provide a working method of a chiller extraction mechanism capable of improving chiller utilization and reducing production costs, comprising the following steps:

[0014] After the pouring is completed, the fixing plate is removed from the core assembly plate, so that the fixing plate moves away from the core assembly plate, thereby driving the cold iron to be drawn out from the bottom plate core and the core assembly plate.

[0015] As described above, the cold iron extraction mechanism and the working method thereof of the present invention have the following beneficial effects:

[0016] The chiller extraction mechanism and working method of the present invention are adopted, wherein the chiller is arranged on a fixed plate, and then a core assembly plate is placed on the fixed plate, the chiller passes through the core plate through hole of the core assembly plate, and then a bottom plate core is placed to form a low-pressure sand bag for pouring, and the chiller passes through the bottom plate through hole of the bottom plate core; after the pouring is completed, the fixed plate is removed from the core assembly plate, thereby driving the chiller to be extracted from the bottom plate core and the core assembly plate; compared with the method in the prior art in which the chiller is directly arranged on the bottom plate core, the present invention does not need to wait until the casting is cooled and the sand is removed before taking out the chiller after the pouring is completed, and the chiller can be reused as soon as possible, and the utilization rate is greatly improved, and in the batch production of castings, the amount of chiller required is greatly reduced, thereby effectively reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the overall structure of the cold iron extraction mechanism of the present invention;

[0018] Figure 2 It is a schematic structural diagram of a core assembly plate in a cold iron extraction mechanism of the present invention;

[0019] Figure 3 It is a schematic diagram showing the structure of a fixed plate in the cold iron extraction mechanism of the present invention;

[0020] Figure 4 Shown is a schematic diagram of the structure of the bottom plate core in the prior art;

[0021] Figure 5 It is a schematic structural diagram of the bottom plate core in the cold iron extraction mechanism of the present invention;

[0022] Figure 6 Shown is a schematic diagram of the inner structure of the chill in the chill extraction mechanism of the present invention;

[0023] Figure 7 Shown is a schematic diagram of the outer structure of the chill in the chill extraction mechanism of the present invention.

[0024] Description of Figure Numbers

[0025] 1 Bottom core

[0026] 101 Bottom plate through hole

[0027] 2 core boards

[0028] 21 Inner side of core plate

[0029] 201 Core board through hole

[0030] 210 Separation tank

[0031] 220 Positioning groove

[0032] 230 Guide hole

[0033] 240 Bump

[0034] 3 Fixing plate

[0035] 31 Inner side of the fixing plate

[0036] 310 Separation Block

[0037] 320 Positioning block

[0038] 330 Guide column

[0039] 340 Mount

[0040] 341 Bottom mounting plate

[0041] 342 Top support block

[0042] 350 Fixed slot

[0043] 4 Cold Iron DETAILED DESCRIPTION

[0044] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] Please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship or adjustment of the size should still fall within the scope of the technical contents disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0046] In the description of the present invention, the terms such as "upper", "lower", "left", "right", "middle" and "one" are used only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the present invention without substantially changing the technical content.

[0047] In the description of the present invention, "inside" and "inner side" refer to the direction toward the casting surface of the sand bag mold; "outside" and "outer side" refer to the direction away from the casting surface of the sand bag mold.

[0048] like Figure 1-7 As shown, this embodiment provides a chiller extraction mechanism, which is arranged on the outer side of the bottom plate core 1 of the sand bag mold, and the chiller extraction mechanism includes: a core assembly plate 2, which is connected to the outer side surface of the bottom plate core 1; a fixed plate 3, which is arranged on the outer side of the core assembly plate 2 and is detachably connected to the core assembly plate 2; a chiller 4 is provided on the inner side surface 31 of the fixed plate 3, a core plate through hole 201 for the chiller 4 to pass through is provided on the core assembly plate 2, and a bottom plate through hole 101 corresponding to the core plate through hole 201 is provided on the bottom plate core 1, and the bottom plate through hole 101 is provided for the chiller 4 to pass through.

[0049] The chiller extraction mechanism of the present embodiment is adopted, by setting the chiller 4 on the fixed plate 3, and then placing the core plate 2 on the fixed plate 3, the chiller 4 passes through the core plate through hole 201 of the core plate 2, and then the bottom plate core 1 is placed to form a low-pressure sand bag for pouring, and the chiller 3 passes through the bottom plate through hole 101 of the bottom plate core 1; after the pouring is completed, the fixed plate 3 is removed from the core plate 2, thereby driving the chiller 4 to be extracted from the bottom plate core 1 and the core plate 2.

[0050] Compared with the method in the prior art where the chill 4 is directly set on the bottom plate core 1, the present invention does not need to wait until the casting is cooled and the sand is removed before taking out the chill 4 after pouring is completed. The chill 4 can be reused as soon as possible, and the utilization rate is greatly improved. Moreover, when mass-producing castings, the number of chills 4 required is greatly reduced, effectively reducing the production cost.

[0051] In this embodiment, in order to facilitate the separation of the fixed plate 3 and the core plate 2, a separation block 310 is provided on the fixed plate 3, and a separation groove 210 for inserting the separation block 310 is provided on the core plate 2, and the separation block 310 is located outside the contour of the bottom plate core 1. By pushing the separation block 310, the fixed plate 3 moves away from the core plate 2, and the fixed plate 3 and the core plate 2 can be separated without affecting the bottom plate core 1. Specifically, the separation block 310 is set at the edge of the fixed plate 3, and the separation groove 210 is also set at the edge of the core plate 2.

[0052] Specifically, there are an even number of separation blocks 310, and all separation blocks 310 constitute at least one group of block assemblies, each group of block assemblies includes two separation blocks 310, and the two separation blocks 310 in each group of block assemblies are arranged oppositely and on both sides of the cold iron 4. This arrangement is to ensure that the fixed plate 3 is evenly stressed when separating from the core plate 2, and to prevent tilting when pushing the separation blocks 310. More specifically, there are four separation blocks 310 in this embodiment, constituting two groups of block assemblies, and the two separation blocks 310 in each group of block assemblies are arranged oppositely on the upper side and the lower side of the cold iron 4, respectively.

[0053] In this embodiment, a positioning block 320 is provided on the inner side surface 31 of the fixed plate 3, and a positioning groove 220 for inserting the positioning block 320 is provided on the core plate 2, so as to facilitate the positioning, installation and disassembly of the fixed plate 3 and the core plate 2. More specifically, there are four positioning blocks 320, which are respectively arranged on the edges of the four sides of the fixed plate 3, two of which are arranged opposite to each other, and the remaining two positioning blocks 320 are arranged opposite to each other; the line connecting the two oppositely arranged positioning blocks 320 is perpendicular to the line connecting the remaining two oppositely arranged positioning blocks 320, and the line connecting the two oppositely arranged positioning blocks 320 is parallel to the line connecting the two separation blocks 310 in any group of block components, so as to achieve stable connection and better centering, and facilitate separation.

[0054] In this embodiment, in order to make the positioning of the fixed plate 3 and the core plate 2 more accurate during assembly and improve the positioning efficiency, a guide column 330 is provided on the fixed plate 3, and a guide hole 230 for inserting the guide column 330 is provided on the core plate 2. Specifically, there are two guide columns 330, and the bottom plate core 1 is located between the two guide columns 330.

[0055] In this embodiment, a mounting seat 340 is provided on the fixing plate 3, and a fixing groove 350 for installing the cold iron 4 is provided on the mounting seat 340. Specifically, in order to make the mounting seat 340 and the core plate 2 and the bottom plate core 1 fit more closely, the mounting seat 340 includes a bottom mounting plate 341 and a top supporting block 342 arranged on the inner side surface of the bottom mounting plate 341. The shape of the bottom mounting plate 341 is consistent with the shape of the core plate through hole 201, and the shape of the top supporting block 342 is consistent with the shape of the bottom plate through hole 101. A fixing groove 350 is opened on the top supporting block 342. In this embodiment, there are five fixing grooves 350 arranged side by side, and five cold irons 4 are installed accordingly.

[0056] In this embodiment, a protrusion 240 is provided on the inner side surface 21 of the core assembly plate 2, and a bottom plate groove (not shown in the figure) is provided on the bottom plate core 1 for inserting the protrusion 240. Specifically, there are four protrusions 240, which are respectively arranged around the core plate through hole 201. This is to facilitate the positioning of the bottom plate core 1 on the core assembly plate 2, and also to facilitate the alignment of the core plate through hole 201 and the bottom plate through hole 101.

[0057] This embodiment also provides a working method of the cold iron extraction mechanism as described above, comprising the following steps:

[0058] 1) Install five cold irons 4 into the fixing groove 350;

[0059] 2) Align the guide posts 330 with the guide posts 330, align the positioning block 320 with the positioning groove 220, align the separation block 310 with the separation groove 210, align the bottom mounting plate 341 with the core plate through hole 201, and place the core plate 2 on the fixing plate 3;

[0060] 3) Align the protrusion 240 with the bottom plate groove, align the top support block 342 with the bottom plate through hole 101, and place the bottom plate core 1 on the core assembly plate 2;

[0061] 4) pouring;

[0062] 5) After the pouring is completed, it is transferred to the separation station through the track, and then the four separation blocks 310 are pressed by the pneumatic device structure to remove the fixed plate 3 from the core plate 2, so that the fixed plate 3 moves away from the core plate 2, thereby driving the cold iron 4 to be pulled out from the bottom plate core 1 and the core plate 2.

[0063] The working method of the chiller extraction mechanism of the present embodiment can quickly and surely install the chiller extraction mechanism, and has a simple structure and is easy to use.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for operating a chiller extraction mechanism, wherein the chiller extraction mechanism is arranged on the outer side of the bottom plate core of a sand bag mold; characterized in that: The cold iron extraction mechanism comprises: a core assembly plate connected to the outer side surface of the bottom plate core; a fixed plate, which is arranged on the outer side of the core assembly plate and is detachably connected to the core assembly plate; a cold iron is arranged on the inner side surface of the fixed plate, a core plate through hole is arranged on the core assembly plate for the cold iron to pass through, a bottom plate through hole corresponding to the core plate through hole is arranged on the bottom plate core, and the bottom plate through hole is arranged for the cold iron to pass through; a separation block is arranged on the fixed plate, a separation groove is arranged on the core assembly plate for the separation block to be inserted, and the separation block is located outside the contour of the bottom plate core; a positioning block is arranged on the inner side surface of the fixed plate, and a positioning groove is arranged on the core assembly plate for the positioning block to be inserted; a guide column is arranged on the fixed plate, and a guide hole is arranged on the core assembly plate for the guide column to be inserted; there are two guide columns, and the cold iron is located between the two guide columns; a mounting seat is arranged on the fixed plate, and a fixing groove is arranged on the mounting seat for the cold iron to be loaded; a protrusion is arranged on the inner side surface of the core assembly plate, and a bottom plate groove is arranged on the bottom plate core for the protrusion to be inserted; The working method comprises the following steps: After the pouring is completed, the fixing plate is removed from the core assembly plate, so that the fixing plate moves away from the core assembly plate, thereby driving the cold iron to be drawn out from the bottom plate core and the core assembly plate.

2. The working method of the cold iron extraction mechanism according to claim 1, characterized in that: The separation blocks are in an even number, and all the separation blocks constitute at least one group of block components. Each group of block components includes two separation blocks, and the two separation blocks in each group of block components are arranged opposite to each other and are located on both sides of the cold iron.

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