Fixtures and casting equipment

Abstract

The present invention provides a fixing device and casting molding equipment for fixing a ceramic filter screen in a molding die, and relates to the field of precision casting technology, including: a fixing component; a fixing groove is provided in the molding die, and the fixing component is provided in the fixing groove, and the inner wall of the fixing groove can generate an extrusion force on the fixing component, and the extrusion force is used to deform the fixing component so that the fixing component is tightly attached to the ceramic filter screen. Since the fixing component is provided in the fixing groove of the molding die, during the wax injection process, the molding die exerts an extrusion force on the fixing component, and the fixing component is deformed by the extrusion force and tightly attached to the ceramic filter screen, eliminating the gap between the fixing component and the ceramic filter screen, alleviating the technical problem of a gap between the filter screen and the mold in the prior art, which affects the quality of subsequent castings, and achieving the technical effect of avoiding the generation of wax skin on the filter screen and improving the quality of castings.

Description

Technical Field

[0001] The present invention relates to the technical field of precision casting, and in particular to a fixing device and casting molding equipment. Background Art

[0002] In the precision casting production process, a ceramic filter is usually arranged on the main runner. The filter plays the role of filtering impurities such as oxides and slag in the molten metal, thereby improving the qualification rate of castings.

[0003] The conventional process for arranging ceramic filters on runners is to arrange the ceramic filters in the runner mold, and then use a wax press to press the wax material into the mold cavity to obtain the runner wax mold. The ceramic filter is a finished product and is affected by its manufacturing process. Its dimensional accuracy is not high. In order to ensure that all the filters can be installed in the mold, a gap of about 2mm will be formed between the filter and the mold.

[0004] However, when the wax is pressed, the wax will fill the gap, resulting in a wax skin of about 2mm around the filter screen of the finished sprue wax mold. After the sprue is shelled in this state, dewaxing is carried out. After the wax is removed, there will be a 2mm gap between the filter screen and the shell. The filter screen will swing left and right in the gap, causing the ceramic filter screen and the shell to collide, causing the shell to fall off, resulting in defects such as inclusions in the casting. Summary of the Invention

[0005] The purpose of the present invention is to provide a fixing device and a casting molding device to alleviate the technical problem in the prior art that a gap exists between the filter screen and the mold, which affects the quality of subsequent castings.

[0006] In a first aspect, the present invention provides a fixing device for fixing a ceramic filter screen in a forming mold, comprising: a fixing member;

[0007] A fixing groove is provided in the forming mold, and the fixing member is provided in the fixing groove. The inner wall of the fixing groove can generate an extrusion force on the fixing member, and the extrusion force is used to deform the fixing member so that the fixing member is tightly attached to the ceramic filter.

[0008] In an alternative embodiment,

[0009] The fixing member includes an upper fixing member and a lower fixing member;

[0010] The forming mold includes an upper mold and a lower mold that can be used to surround the fixing groove. The upper fixing part is arranged in the upper mold, and the lower fixing part is arranged in the lower mold. The upper fixing part and the lower fixing part can be used to surround and form a fixing area that can clamp the ceramic filter.

[0011] In an alternative embodiment,

[0012] An angle is formed between the length side of the ceramic filter in the fixing area and the contact surface between the upper mold and the lower mold.

[0013] In an alternative embodiment,

[0014] The top end of the lower fixing piece extends out of the lower mold toward the upper fixing piece.

[0015] In an alternative embodiment,

[0016] The fixing member further comprises a fixing base plate;

[0017] A plurality of fixing columns are provided on the fixing base plate, and both the upper fixing member and the lower fixing member are provided with fixing holes, into which the fixing columns extend.

[0018] In an alternative embodiment,

[0019] The diameter of the fixing column is larger than the diameter of the fixing hole.

[0020] In an alternative embodiment,

[0021] An inclination angle is formed between the contact surfaces of the fixed bottom plate and the upper mold and the lower mold.

[0022] In an alternative embodiment,

[0023] The fixed base plate includes an upper base plate and a lower base plate;

[0024] The upper fixing member is connected to the upper base plate, the lower fixing member is connected to the lower base plate, and the lower base plate can abut against the ceramic filter.

[0025] In an alternative embodiment,

[0026] The lower base plate is provided with a protrusion, the lower mold is provided with a boss, and the ceramic filter is respectively in contact with the protrusion and the boss.

[0027] In a second aspect, the present invention provides a casting molding device comprising the fixing device.

[0028] The present invention provides a fixing device for fixing a ceramic filter screen in a forming mold, comprising: a fixing member; a fixing groove provided in the forming mold, the fixing member being provided in the fixing groove, the inner wall of the fixing groove being capable of exerting an extrusion force on the fixing member, the extrusion force being used to deform the fixing member so that the fixing member is tightly attached to the ceramic filter screen. Since the fixing member is provided in the fixing groove of the forming mold, during the wax injection process, the forming mold exerts an extrusion force on the fixing member, and the fixing member is deformed by the extrusion force and tightly attached to the ceramic filter screen, eliminating the gap between the fixing member and the ceramic filter screen, alleviating the technical problem in the prior art of a gap between the filter screen and the mold, which affects the quality of subsequent castings, and achieving the technical effect of avoiding the formation of wax skin on the filter screen and improving the quality of castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. 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 any creative work.

[0030] Figure 1 A schematic diagram of the overall structure of a fixing device provided in an embodiment of the present invention;

[0031] Figure 2 A schematic structural diagram of an upper mold in a fixing device provided in an embodiment of the present invention;

[0032] Figure 3 A schematic structural diagram of a fixing member in a fixing device provided in an embodiment of the present invention;

[0033] Figure 4 This is a structural schematic diagram of the lower mold and the lower fixing member in the fixing device provided by an embodiment of the present invention.

[0034] Icons: 100-fixing component; 110-upper fixing member; 120-lower fixing member; 130-fixing base plate; 131-upper base plate; 132-lower base plate; 133-protrusion; 140-fixing column; 200-ceramic filter; 300-forming mold; 310-upper mold; 320-lower mold; 321-boss. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0040] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0042] like Figure 1 、 Figure 2 As shown, the fixing device provided in this embodiment is used to fix the ceramic filter 200 in the forming mold 300, including: a fixing component 100; a fixing groove is provided in the forming mold 300, and the fixing component 100 is provided in the fixing groove, and the inner wall of the fixing groove can generate an extrusion force on the fixing component 100, and the extrusion force is used to cause the fixing component 100 to deform so that the fixing component 100 is tightly attached to the ceramic filter 200.

[0043] Specifically, the molding mold 300 has a fixing groove in the closed state, the fixing component 100 is installed in the fixing groove, and the ceramic filter 200 is arranged in the fixing component 100. The fixing component 100 is made of a flexible material that can produce elastic deformation, such as a silicone material. When the molding mold 300 is closed, the inner wall of the fixing groove in the molding mold 300 squeezes the fixing component 100, causing the fixing component 100 to undergo elastic deformation, thereby making the fixing component 100 tightly attached to the ceramic filter 200, and fixing the ceramic filter 200 in the fixing groove, thereby achieving the technical effect of using the fixing component 100 to eliminate the gap between the molding mold 300 and the ceramic filter 200, and effectively preventing the wax material from forming a wax skin on the side wall of the ceramic filter 200.

[0044] This embodiment provides a fixing device for fixing a ceramic filter 200 in a forming mold 300, comprising: a fixing member 100; a fixing groove provided in the forming mold 300, the fixing member 100 being provided in the fixing groove, the inner wall of the fixing groove being able to exert an extrusion force on the fixing member 100, the extrusion force being used to deform the fixing member 100 so that the fixing member 100 is tightly attached to the ceramic filter 200. Since the fixing member 100 is provided in the fixing groove of the forming mold 300, during the wax injection process, the forming mold 300 exerts an extrusion force on the fixing member 100, and the fixing member 100 is deformed by the extrusion force and tightly attached to the ceramic filter 200, eliminating the gap between the fixing member 100 and the ceramic filter 200, alleviating the technical problem of a gap between the filter and the mold in the prior art, which affects the quality of subsequent castings, and achieving the technical effect of avoiding the formation of wax skin on the filter and improving the quality of castings.

[0045] Based on the above embodiments, Figure 3As shown, in an optional embodiment, the fixing member 100 in the fixing device provided in this embodiment includes an upper fixing member 110 and a lower fixing member 120; the molding mold 300 includes an upper mold 310 and a lower mold 320 that can be enclosed to form a fixing groove, the upper fixing member 110 is arranged in the upper mold 310, and the lower fixing member 120 is arranged in the lower mold 320. The upper fixing member 110 and the lower fixing member 120 can be enclosed to form a fixing area that can clamp the ceramic filter 200.

[0046] Specifically, the upper mold 310 and the lower mold 320 respectively have grooves, and a fixing groove is formed when the upper mold 310 and the lower mold 320 are covered. The upper fixing part 110 and the lower fixing part 120 are respectively arranged in the grooves of the upper mold 310 and the lower mold 320. When the upper mold 310 and the lower mold 320 are covered, the upper mold 310 and the lower mold 320 generate an extrusion force on the upper fixing part 110 and the lower fixing part 120, and the upper fixing part 110 and the lower fixing part 120 fit together, and the upper fixing part 110 and the lower fixing part 120 squeeze the ceramic filter 200, so that the upper fixing part 110 and the lower fixing part 120 are tightly attached to the ceramic filter 200, avoiding a gap between the ceramic filter 200 and the molding mold 300.

[0047] In an optional embodiment, an angle is formed between the length side of the ceramic filter screen 200 in the fixed area and the contact surface of the upper mold 310 and the lower mold 320 .

[0048] Specifically, the angle between the length side of the ceramic filter 200 and the contact surface of the upper mold 310 and the lower mold 320 is 45 degrees. The ceramic filter 200 is placed in the fixing groove by rotating it 45°, that is, the vertical direction of the molding mold 300 is the diagonal direction of the filter. This placement method can ensure that the upper fixing member 110 and the lower fixing member 120 squeeze the filter tightly in the vertical direction.

[0049] In an optional embodiment, the top end of the lower fixing member 120 extends out of the lower mold 320 toward the upper fixing member 110 .

[0050] Specifically, when the upper mold 310 and the lower mold 320 are covered, the top end of the lower fixing part 120 extends out of the groove of the lower mold 320, so that the top surface of the lower fixing part 120 is higher than the top surface of the lower mold 320, such that the upper surface of the lower fixing part 120 is approximately 0.5 mm higher than the lower mold 320, ensuring that when the upper mold 310 and the lower mold 320 are put together, the upper fixing part 110 and the lower fixing part 120 are in a compressed state, preventing the wax material from being squeezed out from the gap between the upper fixing part 110 and the lower fixing part 120 under the action of pressure.

[0051] The fixing device provided in this embodiment installs the ceramic filter 200 in the fixing groove at a 45° angle, so that the upper fixing part 110 and the lower fixing part 120 can better squeeze the ceramic filter 200, avoiding the generation of gaps and the formation of wax skin; because the top end of the lower fixing part 120 extends out of the top surface of the lower mold 320, when the upper mold 310 and the lower mold 320 are covered, the upper fixing part 110 can be tightly attached to the lower fixing part 120, preventing wax from entering the gap between the upper fixing part 110 and the lower fixing part 120.

[0052] On the basis of the above embodiment, in an optional implementation manner, the fixing member 100 in the fixing device provided in this embodiment further includes a fixing base plate 130; a plurality of fixing columns 140 are provided on the fixing base plate 130, and both the upper fixing member 110 and the lower fixing member 120 are provided with fixing holes, and the fixing columns 140 extend into the fixing holes.

[0053] Specifically, the fixed base plate 130 is set in the fixed groove, and a plurality of fixed columns 140 are provided on the fixed base plate 130. The upper fixing member 110 and the lower fixing member 120 are both provided with fixing holes corresponding to the fixing columns 140. The upper fixing member 110 and the lower fixing member 120 are installed on the fixed base plate 130 by utilizing the cooperation of the fixing columns 140 and the fixing holes.

[0054] In an alternative embodiment, the diameter of the fixing post 140 is larger than the diameter of the fixing hole.

[0055] Specifically, the diameter of the fixing column 140 is 0.2-0.3 mm larger than the inner diameter of the fixing hole, so that the fixing column 140 and the fixing hole have an interference fit, ensuring a firm connection between the fixing column 140 and the fixing hole.

[0056] In an alternative embodiment, contact surfaces between the fixed base plate 130 and the upper mold 310 and the lower mold 320 have an inclined angle.

[0057] Specifically, the fixed base plate 130 has a slope of 3 degrees. When the fixed base plate 130 is assembled in the fixing groove, the slope ensures that the upper mold 310 and the lower mold 320 connected to the fixed base plate 130 are in a squeezed state in the upper mold 310 and the lower mold 320.

[0058] In an optional embodiment, the fixed base plate 130 includes an upper base plate 131 and a lower base plate 132 ; the upper fixing member 110 is connected to the upper base plate 131 , and the lower fixing member 120 is connected to the lower base plate 132 , and the lower base plate 132 can abut against the ceramic filter 200 .

[0059] Specifically, fixing columns 140 are provided on the upper base plate 131 and the lower base plate 132. The fixing columns 140 on the upper base plate 131 extend into the fixing holes of the upper fixing member 110, and the fixing columns 140 on the lower base plate 132 extend into the fixing holes of the lower fixing member 120. After the ceramic filter 200 is installed, the lower base plate 132 can abut against the ceramic filter 200, thereby restricting the ceramic filter 200 on the lower base plate 132.

[0060] like Figure 4 As shown, in order to prevent the ceramic filter 200 from shaking, in an optional embodiment, a protrusion 133 is provided on the lower base plate 132, and a boss 321 is provided on the lower mold 320, and the ceramic filter 200 abuts against the protrusion 133 and the boss 321 respectively.

[0061] Specifically, a protrusion 133 is provided on the lower base plate 132, and a boss 321 is provided on the lower mold 320. The ceramic filter 200 is installed between the protrusion 133 and the boss 321. Both the protrusion 133 and the boss 321 are in contact with the ceramic filter 200. The protrusion 133 and the boss 321 are used to restrict the ceramic filter 200 between the protrusion 133 and the boss 321 to prevent the ceramic filter 200 from shaking.

[0062] The casting molding equipment provided in this embodiment includes a fixing device.

[0063] Since the technical effects of the casting molding equipment provided in this embodiment are the same as those of the above-mentioned fixing device, they will not be described in detail here.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixing device for fixing a ceramic filter (200) in a forming mold (300), characterized in that: It comprises: a fixing member (100); A fixing groove is provided in the molding die (300), the fixing member (100) is provided in the fixing groove, and the inner wall of the fixing groove can generate an extrusion force on the fixing member (100), and the extrusion force is used to deform the fixing member (100) so that the fixing member (100) is closely attached to the ceramic filter screen (200); The fixing member (100) includes an upper fixing member (110) and a lower fixing member (120); The molding die (300) comprises an upper die (310) and a lower die (320) capable of surrounding and forming the fixing groove; the upper fixing member (110) is disposed in the upper die (310); the lower fixing member (120) is disposed in the lower die (320); the upper fixing member (110) and the lower fixing member (120) are capable of surrounding and forming a fixing area capable of clamping the ceramic filter screen (200); The fixing member (100) is made of flexible material.

2. The fixing device according to claim 1, characterized in that An included angle is formed between the length side of the ceramic filter (200) in the fixed area and the contact surfaces of the upper mold (310) and the lower mold (320).

3. The fixing device according to claim 1, characterized in that The top end of the lower fixing member (120) extends out of the lower mold (320) toward the upper fixing member (110).

4. The fixing device according to claim 1, characterized in that The fixing member (100) further includes a fixing base plate (130); A plurality of fixing columns (140) are provided on the fixing base plate (130), and both the upper fixing member (110) and the lower fixing member (120) are provided with fixing holes, and the fixing columns (140) extend into the fixing holes.

5. The fixing device according to claim 4, characterized in that The diameter of the fixing column (140) is larger than the diameter of the fixing hole.

6. The fixing device according to claim 4, characterized in that There is an inclination angle between the contact surfaces of the fixed base plate (130) and the upper mold (310) and the lower mold (320).

7. The fixing device according to claim 4, characterized in that The fixed base plate (130) includes an upper base plate (131) and a lower base plate (132); The upper fixing member (110) is connected to the upper base plate (131), the lower fixing member (120) is connected to the lower base plate (132), and the lower base plate (132) can abut against the ceramic filter screen (200).

8. The fixing device according to claim 7, characterized in that The lower base plate (132) is provided with a protrusion (133), the lower mold (320) is provided with a boss (321), and the ceramic filter (200) abuts against the protrusion (133) and the boss (321), respectively.

9. A casting molding equipment, characterized in that, Comprising the fixing device according to any one of claims 1 to 8.

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