Adjustable custom sand casting mold

Abstract

The utility model discloses a with formula sanding manufacturing mould of adjustable, include: base, with formula mould mechanism is used for forming corresponding cavity according to sanding size, including install on the base and array arrangement a plurality of drive components and with a plurality of drive components transmission connection a plurality of stand, every stand is driven under the corresponding drive component and moves up and down, and the mutual adhesion between adjacent stand, when the initial state, the upper end surface of a plurality of stand is flush, when the use state, according to sanding size, a plurality of first stand in the inner periphery is lifted to different height to form the profile, a plurality of second stand in the outer periphery of a plurality of first stand is formed mould outer wall to the upward rise, and a plurality of second stand and a plurality of first stand form the cavity between. The manufacturing mould provided by the utility model can improve the mould applicability, reduce the production cost and improve the production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of casting technology, and specifically relates to an adjustable conformal sand blank manufacturing mold. Background Technology

[0002] Subtractive core making is a process that removes excess material from a specially made sand blank through machining methods such as cutting and grinding, in order to obtain a sand core with the shape, size and surface quality that meet the design requirements.

[0003] Subtractive core manufacturing mainly involves two processes: blank preparation and machining. Figure 1 As shown, the existing blank-making mold includes a base plate 100 and four side plates 200 fixed on the outer periphery of the base plate 100. Lifting columns 300 for forming lifting holes are fixed on the inner side of the side plates 200. During blank-making, core sand is filled into the mold and then pressed and compacted. After curing, the mold needs to be removed and the sand blank is lifted through the lifting holes.

[0004] Existing subtractive core manufacturing processes have the following drawbacks:

[0005] (1) Mold size is difficult to change in real time with the variety of product data. At present, the main target of subtractive processing is the trial production of small batches of multi-variety products, which means that there are many mold specifications and sizes required. If different sizes of boards are made, the cost is high and the assembly is more troublesome.

[0006] (2) The subtractive processing time is relatively long, such as Figure 2 As shown, the sand blank 400 produced is a monolithic block structure. After subtracting material from it, a sand core 500 is obtained (as shown). Figure 3 As shown in the figure, when actually used in subtractive machining centers, the actual utilization rate is only 30%-60%. Utility Model Content

[0007] Based on the above problems, the purpose of this utility model is to provide an adjustable conformal sand blank manufacturing mold, which can save costs and improve production efficiency.

[0008] To overcome the shortcomings of the existing technology, the technical solution provided by this utility model is as follows:

[0009] Adjustable conformal molding die, including:

[0010] Base;

[0011] The conformal mold mechanism is used to form a corresponding cavity according to the size of the sand blank. It includes several driving components mounted on the base and arranged in an array, and several columns that are connected to the driving components. Each column moves up and down under the drive of the corresponding driving component, and adjacent columns fit together.

[0012] In the initial state, the upper surfaces of the plurality of columns are flush; in the use state, the plurality of first columns located on the inner periphery are raised and lowered to different heights according to the size of the sand blank to form a mold surface, and the plurality of second columns located on the outer periphery of the plurality of first columns rise up to form the outer wall of the mold, and the cavity is formed between the plurality of second columns and the plurality of first columns.

[0013] In one embodiment, a curing blowing mechanism is also included, which is detachably disposed above the conformal mold mechanism for blowing catalytic gas into the cavity;

[0014] The column has a hollow ventilation cavity inside. The upper end of the column is provided with a first exhaust plug and the lower end is provided with a second exhaust plug. Both the first and second exhaust plugs are configured to allow air to pass through but prevent core sand from passing through.

[0015] In one embodiment, the lower end of the column is connected to the drive component via a connecting column, and the connecting column is provided with an exhaust channel communicating with the second exhaust plug to exhaust the catalytic gas above the plurality of drive components.

[0016] In one embodiment, the exhaust passage includes a main passage corresponding to the exhaust port of the second exhaust plug and multiple branch passages connected to the main passage.

[0017] In one embodiment, a mold housing is also included, which is detachably mounted on the base and located on the outer periphery of the conformal mold mechanism to form a sealed cavity between the base and the plurality of columns. The base is hollow inside and has a plurality of vent holes communicating with the interior at the upper end, and an exhaust pipe is connected to the bottom side.

[0018] In one embodiment, the exhaust pipe is connected to an exhaust fan.

[0019] In one embodiment, the upper end of the base is provided with a plurality of mounting seats for mounting the drive component, and the vent holes are disposed between adjacent mounting seats.

[0020] In one embodiment, the mold housing includes four side plates connected in sequence, wherein at least two opposite side plates have connecting plates on their outer walls, and the connecting plates are detachably connected to the base.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] 1. The cavity of this mold can be changed according to the size of the sand blank, and one mold can be used for multiple products, saving production costs;

[0023] 2. The mold allows for the shaping of the sand blank, which can shorten the subtractive processing time and improve production efficiency;

[0024] 3. The sand blank can be exposed by driving the second column to descend through the drive component, which makes it easy to remove the sand blank without removing the mold, thus further improving production efficiency;

[0025] 4. When using a catalyst for curing, the catalytic gas is discharged through the hollow ventilation cavity of the column, which facilitates the catalytic curing process;

[0026] 5. By setting up a mold shell, the catalytic gas can be collected and discharged through the base, reducing environmental pollution. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a blanking mold in the prior art;

[0029] Figure 2 A schematic diagram of the state of subtractive core fabrication in existing technology;

[0030] Figure 3 This is a schematic diagram of the structure of a sand core prepared in the prior art;

[0031] Figure 4 This is a schematic diagram of the structure of an embodiment of an adjustable conformal sand blank manufacturing mold of the present invention;

[0032] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0033] Figure 6 This is a schematic diagram of the structure of the upper end of the column in the initial state in this embodiment of the utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the first exhaust plug in an embodiment of this utility model;

[0035] Figure 8 This is a schematic diagram of the connecting column in an embodiment of the present utility model;

[0036] Figure 9 This is a schematic diagram of the mold shell structure in an embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the cavity of a sand blank in an embodiment of the present invention;

[0038] Figure 11This is a schematic diagram of the cavity of another sand blank in an embodiment of this utility model;

[0039] in:

[0040] 100, base plate; 200, side plate; 300, lifting hole column; 400, sand blank; 500, sand core;

[0041] 1. Base; 1-1. Vent hole; 1-2. Exhaust hole; 1-3. Positioning groove;

[0042] 2. Drive components; 2-1. Electric cylinder connector;

[0043] 3. Column; 3-1. Ventilation chamber;

[0044] 4. First exhaust plug; 4-1. Slit;

[0045] 5. Second exhaust plug;

[0046] 6. Connecting column; 6-1. Main passage; 6-2. Branch passage;

[0047] 7. Mounting bracket;

[0048] 8. Inflatable mask;

[0049] 9. Heater;

[0050] 10. First trachea;

[0051] 11. Side panels;

[0052] 12. Connecting plate;

[0053] 13. Second trachea;

[0054] 14. Sand blank. Detailed Implementation

[0055] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0056] See Figure 4 and Figure 5 The above is a schematic diagram of the structure of an embodiment of the present utility model. It provides an adjustable conformal sand blank manufacturing mold, including a base 1 and a conformal mold mechanism disposed on the base 1. The conformal mold mechanism forms a cavity that matches the size of the sand blank, thereby being used to process sand blanks of different sizes.

[0057] The conformal mold mechanism includes several driving components 2 mounted on a base 1 and arranged in an array, and several columns 3 that are drively connected to the driving components 2. Each column 3 moves up and down under the drive of its corresponding driving component 2, and adjacent columns 3 fit together. Preferably, the driving components 2 are electric cylinders.

[0058] like Figure 6 As shown, in the initial state, the upper surfaces of several columns 3 are flush; in the usage state, the multiple first columns located on the inner periphery are raised and lowered to different heights according to the size of the sand blank to form a profile matching the sand blank, and the multiple second columns located on the outer periphery of the multiple first columns are raised to form the outer wall of the mold, forming a cavity between the multiple second columns and the multiple first columns. For example, if the required sand blank size is 1400*1400*500, as... Figure 4 As shown, simply raise the outermost ring of pillars to form the outer wall of the mold. If the size of the sand blank to be manufactured is 1200*1200*500, as... Figure 10 As shown, both rows of outer columns need to be raised to form the outer wall of the mold. However, when the shape of the manufactured sand blank is irregular, such as... Figure 11 As shown, the columns on the outer perimeter of the mold surface need to be raised to form the outer wall of the mold.

[0059] To facilitate catalytic curing of the sand blank, a curing blowing mechanism is provided, which is detachably mounted above the mold mechanism to blow catalytic gas into the cavity. The curing blowing mechanism includes a blowing hood 8 that can be covered above the mold mechanism, a heater 9 mounted on the blowing hood 8, a first air pipe 10 connected to the air source and a second air pipe 13 connecting the heater 9 and the blowing hood 8. When catalytic curing is required, the blowing hood 8 is placed above the mold mechanism, and the airflow carrying the catalyst enters the heater 9 from the first air pipe 10, is heated, enters the blowing hood 8 through the second air pipe 13, and is then discharged into the cavity to cure the sand blank 14.

[0060] Correspondingly, to facilitate the discharge of catalytic gas from the mold cavity, the column 3 has a hollow ventilation cavity 3-1 inside. A first vent plug 4 is provided at the upper end of the column 3, and a second vent plug 5 is provided at the lower end. Both the first vent plug 4 and the second vent plug 5 are configured to allow air to pass through but prevent the core sand from passing through. Specifically, for example... Figure 7 As shown, the first vent plug 4 includes a plug body and a plurality of slits 4-1 arranged at intervals on the plug body. The width of the slits 4-1 is 0.1 to 0.2 mm. The structure of the second vent plug 5 is the same as that of the first vent plug 4. When the core sand is filled into the cavity, the core sand will not fall into the column 3 through the slits 4-1. When the catalyst is used for curing, the catalytic gas can pass through the sand blank 14 into the ventilation cavity 3-1 and then be discharged.

[0061] To facilitate the connection between the column 3 and the drive component 2, the lower end of the column 3 is connected to the drive component 2 via a connecting column 6. An exhaust channel communicating with the second exhaust plug 5 is provided within the connecting column 6 to discharge the catalytic gas above several drive components 2. Specifically, for example... Figure 8 As shown, the exhaust passage includes a main passage 6-1 corresponding to the second exhaust plug 5 and multiple branch passages 6-2 connected to the main passage 6-1. The middle part of the lower end of the connecting post 6 is connected to the electric cylinder connector 2-1. The multiple branch passages 6-2 are arranged in the circumferential direction of the electric cylinder connector 2-1.

[0062] To facilitate the collection of gases emitted during catalytic solidification, a mold shell is also provided, such as... Figure 9 As shown, the mold shell is detachably mounted on the base 1 and located on the outer periphery of the conformal mold mechanism so that a sealed cavity is formed between the base 1 and several columns 3. Correspondingly, the base 1 is hollow inside and has multiple vent holes 1-1 connected to the interior at the upper end. At the same time, an exhaust hole 1-2 is provided on the side of the base 1 to be connected to an exhaust pipe.

[0063] To further optimize the implementation effect of this utility model, an exhaust fan is connected to the exhaust pipe. In this way, after the catalytic curing is completed, the catalytic gas in the cavity can be extracted by the exhaust fan, reducing the pollution caused by the overflow of catalytic gas.

[0064] To facilitate the installation of the drive component 2, several mounting seats 7 for mounting several drive components 2 are provided on the upper end of the base 1, and vent holes 1-1 are provided between adjacent mounting seats 7.

[0065] The mold housing includes four side plates 11 connected in sequence, wherein at least two opposite side plates 11 are provided with connecting plates 12 on their outer walls, and the connecting plates 12 are detachably connected to the base 1 by screws.

[0066] To facilitate the positioning of the mold shell, a positioning groove 1-3 is provided around the outer periphery of the base 1. During installation, the four side plates 11 are connected in sequence with screws and placed in the positioning groove 1-3. Then, the connecting plate 12 is fixed to the base 1 with screws.

[0067] The manufacturing method of the aforementioned adjustable conformal sand blank manufacturing mold includes the following steps:

[0068] Step S1: Adjust the height of the multiple first pillars on the inner periphery to form a profile that matches the target sand blank at the upper end of the multiple first pillars. Raise the multiple second pillars on the outer periphery of the multiple first pillars to form the outer wall of the mold. At this time, a cavity is formed between the multiple second pillars and the multiple first pillars.

[0069] Step S2: Fill the cavity with core sand and press it firmly with a pressure plate to form a sand blank 14 in the cavity;

[0070] Step S3: Curing the sand blank 14 obtained in step S2;

[0071] Step S4: Lower multiple second columns and remove sand blank 14.

[0072] In step S1, the feed distance and feed margin of the drive component are determined according to the shape of the target sand core. The column 3 is lowered at the protruding position of the target sand blank and raised at the concave position of the target sand blank. The feed margin is 10-20mm. After the electric cylinder drives the column 3 to rise, it self-locks.

[0073] In step S3, natural curing or catalyst curing can be used. When natural curing is used, the sand blank 14 is placed in the cavity and left to stand for a period of time to complete the curing. When catalyst curing is used, catalytic gas is introduced into the cavity. After curing is completed, under the action of the exhaust fan, the catalytic gas passes through the sand blank 14 and is discharged above the base 1 through the hollow ventilation cavity 3-1 of the column 3, and then discharged through the base 1.

[0074] The working principle of this utility model is as follows:

[0075] Confirm the dimensions of the target sand blank, adjust the multiple first columns on the inner periphery of the mold mechanism to different heights to form a profile that matches the target sand blank, raise the multiple second columns located on the outer periphery of the multiple first columns to form the outer wall of the mold; then fill the cavity with core sand and press it firmly with a pressure plate; cure the sand blank 14 by natural curing or catalytic curing; after curing is completed, lower the multiple second columns and remove the sand blank 14.

[0076] In summary, this manufacturing mold can adapt to the manufacturing of sand blanks of different sizes, reduce production costs, and produce sand blanks that conform to the target sand blank, which can reduce the time for subtractive processing and improve production efficiency.

[0077] The above examples are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adjustable conformal sand blank manufacturing mold, characterized in that, include: Base; The conformal mold mechanism is used to form a corresponding cavity according to the size of the sand blank. It includes several driving components mounted on the base and arranged in an array, and several columns that are connected to the driving components. Each column moves up and down under the drive of the corresponding driving component, and adjacent columns fit together. In the initial state, the upper surfaces of the plurality of columns are flush; in the use state, the plurality of first columns located on the inner periphery are raised and lowered to different heights according to the size of the sand blank to form a mold surface, and the plurality of second columns located on the outer periphery of the plurality of first columns rise up to form the outer wall of the mold, and the cavity is formed between the plurality of second columns and the plurality of first columns.

2. The adjustable conformal sand blank manufacturing mold according to claim 1, characterized in that: It also includes a curing blowing mechanism, which is detachably mounted above the conformal mold mechanism and is used to blow catalytic gas into the cavity; The column has a hollow ventilation cavity inside. The upper end of the column is provided with a first exhaust plug and the lower end is provided with a second exhaust plug. Both the first and second exhaust plugs are configured to allow air to pass through but prevent core sand from passing through.

3. The adjustable conformal sand blank manufacturing mold according to claim 2, characterized in that: The lower end of the column is connected to the drive component via a connecting column, and the connecting column is provided with an exhaust channel that communicates with the second exhaust plug to discharge the catalytic gas above the plurality of drive components.

4. The adjustable conformal sand blank manufacturing mold according to claim 3, characterized in that: The exhaust channel includes a main channel corresponding to the exhaust port of the second exhaust plug and multiple branch channels connected to the main channel.

5. The adjustable conformal sand blank manufacturing mold according to claim 3, characterized in that: It also includes a mold housing, which is detachably mounted on the base and located on the outer periphery of the conformal mold mechanism so that a sealed cavity is formed between the base and the plurality of columns. The base is hollow inside and has a plurality of vent holes at the upper end that communicate with the interior. An exhaust pipe is connected to the side of the base.

6. The adjustable conformal sand blank manufacturing mold according to claim 5, characterized in that: The exhaust pipe is connected to the exhaust fan.

7. The adjustable conformal sand blank manufacturing mold according to claim 5, characterized in that: The upper end of the base is provided with several mounting seats for mounting the several driving components, and the vent holes are arranged between adjacent mounting seats.

8. The adjustable conformal sand blank manufacturing mold according to claim 5, characterized in that: The mold housing includes four side plates connected in sequence, wherein at least two opposite side plates have connecting plates on their outer walls, and the connecting plates are detachably connected to the base.

Images