Continuous production device applied to low-pressure casting process

Abstract

The utility model belongs to the technical field of low-pressure casting, and particularly relates to a continuous production device applied to a low-pressure casting process. A sand box containing a to-be-cast sand mold is conveyed to a preset position A through a conveying piece, the sand box is lifted to be separated from the conveying piece from the side portion through a jack and moved to a preset position B, aligned falling is conducted for casting and pressure maintaining, then the sand box is lifted and conveyed to a preset position C (the conveying piece located on the other side of a liquid rising pipe) again, continuous operation is completed, the improvement cost is low, and the production efficiency is high. Manual participation steps are reduced, the production takt is improved, and meanwhile, the safety risk to operators is reduced. The low-pressure casting process is simply transformed on the premise that the cost is not increased, continuous production of low-pressure casting is achieved, manual participation is reduced, the production takt is greatly improved, and meanwhile the safety risk to operators is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-pressure casting, in particular to a continuous production device applied to a low-pressure casting process. Background Art

[0002] As an advanced casting process, low-pressure casting offers advantages such as high material utilization and high-quality castings, making it particularly suitable for the production of complex, thin-walled castings. Due to a variety of subjective and objective factors, most small and medium-sized low-pressure casting companies still rely on manual labor. However, manual labor throughout the low-pressure casting process clearly has significant drawbacks. For example, compared to automated equipment, manual operation is slower when performing repetitive tasks, making it impossible to achieve rapid and continuous production, thus affecting overall production efficiency. Furthermore, the casting process involves high-temperature liquid metal and some potentially hazardous chemicals, which increases the risk of accidents and poses a threat to worker safety. However, automating the low-pressure casting process does present some difficulties. For example, the design of low-pressure casting equipment and molds must take into account the characteristics of different castings. Mold replacement and adjustment can be complex, making it difficult for automated systems to adapt to different mold designs and production requirements. Furthermore, the initial investment in a mature low-pressure casting automation system is high, including costs for equipment acquisition, system development, and maintenance.

[0003] In view of this, the utility model proposes a continuous production device applied to the low-pressure casting process, which simply transforms the low-pressure casting process without increasing costs, realizes the continuous production of low-pressure casting, reduces manual participation, greatly improves the production rhythm, and reduces the safety risks to operators. Utility Model Content

[0004] In order to solve the above technical problems, the inventors have come up with a technical solution through practice and summary. The present utility model adopts the following technical solution:

[0005] A continuous production device for a low-pressure casting process, comprising:

[0006] Sand box, with lifting parts on both sides of the sand box;

[0007] Furnace plate, the furnace plate is installed directly above the low-pressure furnace;

[0008] Conveying piece, the position of which is adjustable relative to the furnace plate, is used to convey the sand box to the predetermined position A;

[0009] Riser pipe, which passes through the bottom of the furnace plate and is partially exposed;

[0010] There are two groups of moving parts, one on each side of the furnace plate, and the position relative to the furnace plate is adjustable. They are used to transport the flask from a predetermined position A to a predetermined position B corresponding to the vertical position of the flask and the riser pipe. The moving direction of the moving parts is parallel to the moving direction of the transporting parts.

[0011] The jack is installed on the moving part, and the jack acts as a lifting part to lift the sand box.

[0012] Preferably, the top of the sand box is an open structure and is provided with an outer boss on the periphery, a cover plate is installed inside the outer boss, and exhaust holes are evenly distributed on the cover plate. The exhaust holes are through holes with a diameter of 10 to 20 mm;

[0013] A positioning groove I is provided on the outer boss, and the position of the positioning groove I and the position of the lifting member are located on the same side;

[0014] The cover plate is provided with a positioning groove II, which corresponds to the positioning groove I.

[0015] After the cover is placed inside the outer boss, the bottom surfaces of the positioning grooves I and II are flush;

[0016] The movable part is provided with a lifting and pressing plate, which presses the cover plate tightly against the top of the sand box through the positioning groove II and the positioning groove I;

[0017] The wall thickness of the sand box is 10 to 15 mm, and the height of the outer boss is 15 to 20 mm.

[0018] Preferably, the lifting and pressing plate includes an electric hydraulic fully automatic lifting column located at the bottom and a lower pressing plate located at the top, and the lower pressing plate is adapted to the positioning groove I and the positioning groove II.

[0019] Preferably, the device further comprises two slide rails 1 fixedly mounted on the top surface of the furnace plate and arranged in parallel;

[0020] The conveying member includes a slider 1 that is slidably fitted on the slide rail 1. Limit blocks are fixedly installed on both ends of the top of the slider 1 to limit the position of the sand box.

[0021] The length of the slider I is 1 / 4 to 1 / 2 of the slide rail I, and the height of the top surface of the slider I is at least higher than the height of the top surface of the liquid rising tube.

[0022] Preferably, there are at least two groups of sliders 1 on each group of slide rails 1, which are distributed on both sides of the rising pipe.

[0023] Preferably, the device further comprises two parallel slide rails II, the two slide rails II are respectively located on both sides of the furnace plate, and the layout direction is consistent with the layout direction of the slide rail I;

[0024] The moving part comprises a slider II which is slidably matched on a slide rail II, and the lifter and the lifting and lowering plate are both installed on the slider II.

[0025] Preferably, the jacks are provided in four groups of two, and the jacks are electric hydraulic fully automatic lifting columns with a stroke greater than or equal to 300 mm;

[0026] There are four lifting pieces, two in a group, and the two groups are located on both sides of the sand box. The layout direction is perpendicular to the movement direction of the moving piece. The bottom of the lifting piece is provided with a lifting groove, which is adapted to the top of the lifter. The top height of the lifter is lower than the bottom height of the lifting piece.

[0027] The lifting piece is 1 / 3 to 1 / 2 of the height away from the lower end surface of the sand box, with a width of 150 to 200 mm, a length of 50 to 100 mm, and a wall thickness of 20 to 30 mm.

[0028] Preferably, a correction cylinder is fixedly mounted on the top surface of the movable member, and a push plate is provided at the end of the correction cylinder. The correction cylinders located on both sides of the sand box work simultaneously to correct the position of the sand box on the conveying member.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The utility model transports the sand box containing the sand mold to be cast to the predetermined position A via the conveying member, uses a crane to lift the sand box from the side to separate it from the conveying member, and moves it to the predetermined position B, aims at the drop to cast the mold and maintain the pressure, and then lifts it again to the predetermined position C (the conveying member on the other side of the riser pipe) to complete the continuous operation, with low modification cost, reduced manual participation steps, improved production rhythm, and reduced safety risks to operators.

[0031] 2. The utility model utilizes lifting and pressing plates to press the top cover plate tightly into the outer boss, thereby reducing the risk of fire and enabling better pouring and filling.

[0032] 3. The utility model utilizes the correction oil cylinder on the moving part to correct the position of the sand box at the predetermined position A on the conveying part, ensuring that the top of the lifting and lowering pressure plate presses the cover plate tightly.

[0033] 4. The utility model adopts the bottom pouring filling method, the gas in the sand mold is easily discharged from the top, and there is less oxidation; the molten metal in the sand mold is filled more smoothly without splashing; it can effectively reduce porosity defects and improve the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a continuous production device in one embodiment of the present invention.

[0035] Figure 2for Figure 1 Implementation diagram.

[0036] Figure 3 This is the overall structural diagram of the sand box of the present utility model.

[0037] Figure 4 It is a schematic diagram of the overall structure of the cover plate of the present invention.

[0038] Figure 5 This is a schematic diagram of the overall structure of another continuous production device of the present invention.

[0039] In the figure: 10, sand box; 11, outer boss; 12, positioning groove I; 13, lifting part; 14, cover plate; 141, positioning groove II; 142, exhaust hole; 20, furnace plate; 21, slide rail I; 22, conveying part; 23, limit block; 30, lifting pipe; 40, slide rail II; 41, moving part; 42, lifter; 43, lifting and lowering plate parts; 431, electric hydraulic fully automatic lifting column; 432, lower pressure plate; 50, calibration cylinder; 51, push plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] Example 1, as Figure 1 and Figure 2 As shown, a continuous production device for low-pressure casting process includes:

[0043] The flask 10 has lifting members 13 on both sides thereof;

[0044] The furnace plate 20 is installed directly above the low-pressure furnace;

[0045] The conveying member 22 is adjustable relative to the furnace plate 20 and is used to convey the flask 10 to a predetermined position A;

[0046] A rising liquid pipe 30, which passes through the bottom of the furnace plate 20 and is partially exposed;

[0047] The movable members 41 are provided in two groups, one on each side of the furnace plate 20 and adjustable relative to the furnace plate 20, and are used to transport the flask 10 from a predetermined position A to a predetermined position B corresponding to the vertical position of the flask 10 and the riser pipe 30. The moving direction of the movable members 41 is arranged parallel to the moving direction of the transport member 22;

[0048] The jack 42 is installed on the moving member 41 , and the jack 42 acts on the lifting member 13 to lift the sand box 10 .

[0049] A sand mold is installed in the sand box 10, and water glass self-hardening sand is filled in the gap between the sand mold and the sand box 10. The filled sand box 10 is placed on the conveying member 22 of the furnace plate 20 using a lifting device. When it slides to within the travel range of the moving member 41, the furnace plate 20 and the conveying member 22 stop moving. The jack 42 acts as the lifting member 13 to lift the sand box 10 away from the conveying member 22 and move it to the top of the rising pipe 30, and then fall and align it. The sand mold gate is perfectly matched with the rising pipe mouth. Pouring and pressure maintenance are carried out according to the preset appropriate process parameters until completion. The rising pipe 30 is lifted again and transported and dropped to the corresponding conveying member 22 through the moving member 41 to complete the corresponding continuous production.

[0050] Example 2: Based on the above example, the following improvements are made: Figure 2 As shown, the flask is improved. The top of the flask 10 is an open structure and an outer boss 11 is provided on the periphery. A cover plate 14 is installed inside the outer boss 11. The cover plate 14 is evenly distributed with exhaust holes 142. The exhaust holes 142 are through holes with a diameter of 10 to 20 mm.

[0051] A positioning groove I12 is provided on the outer boss 11, and the positioning groove I12 is located on the same side as the lifting member 13;

[0052] The cover plate 14 is provided with a positioning groove II 141, which corresponds to the positioning groove I12;

[0053] After the cover plate 14 is placed inside the outer boss 11, the bottom surfaces of the positioning groove I12 and the positioning groove II 141 are flush;

[0054] The movable member 41 is provided with a lifting and pressing plate 43, which presses the cover plate 14 against the top of the sand box 10 by means of the positioning groove II 141 and the positioning groove I12;

[0055] The wall thickness of the sand box 10 is 10-15 mm, and the height of the outer boss 11 is 15-20 mm.

[0056] The lifting and pressing plate member 43 includes an electric hydraulic fully automatic lifting column 431 located at the bottom and a lower pressing plate 432 located at the top, and the lower pressing plate 432 is adapted to the positioning groove I12 and the positioning groove II 141.

[0057] In order to avoid the risk of fire in the sand mold in the sand box 10, the positioning groove I12 and the positioning groove II 141 are used to make the lower bottom surface flush and pressed tightly against the inside of the outer boss 11 by the action of the lower pressing plate 432.

[0058] Example 3: Based on the above example, the following improvements are made: Figure 1 As shown, the device also includes two slide rails I21 fixedly mounted on the top surface of the furnace plate 20 and arranged in parallel;

[0059] The conveying member 22 includes a slider 1 that is slidably fitted on the slide rail 1 21. Limit blocks 23 are fixedly mounted on both ends of the top of the slider 1. The limit blocks 23 are used to limit the position of the sand box 10.

[0060] The length of the slider I is 1 / 4 to 1 / 2 of the slide rail I 21 , and the top surface height of the slider I is at least higher than the top surface height of the liquid riser 30 .

[0061] There are at least two groups of sliders I on each group of slide rails I21, distributed on both sides of the rising pipe 30.

[0062] The device further includes two parallel slide rails II 40, the two slide rails II 40 are respectively located on both sides of the furnace plate 20, and the layout direction is consistent with the layout direction of the slide rail I 21;

[0063] The moving member 41 includes a slider II that is slidably fitted on the slide rail II 40 , and the jack 42 and the lifting and pressing plate 43 are both installed on the slider II.

[0064] In order to further shorten the production cycle, the conveying members 22 are located on both sides of the rising pipe 30, thereby greatly improving the operating efficiency.

[0065] Example 4: Based on the above example, the following improvements are made: four jacks 42 are provided, two in a group, and the jacks 42 are electric hydraulic fully automatic lifting columns 431, with a support plate provided on the top, and a stroke greater than or equal to 300 mm;

[0066] There are four lifting members 13, arranged in groups of two, and the two groups are located on both sides of the flask 10. The arrangement direction is perpendicular to the movement direction of the moving member 41. The bottom of the lifting member 13 is provided with a lifting groove, which is adapted to the top (supporting plate) of the jack 42. The top height of the jack 42 is lower than the bottom height of the lifting member 13.

[0067] The lifting piece 13 is 1 / 3 to 1 / 2 of the height away from the lower end surface of the flask 10, has a width of 150 to 200 mm, a length of 50 to 100 mm, and a wall thickness of 20 to 30 mm.

[0068] The lifting member 13 drives the stripping plate upward on the outside of the flask 10 , thereby lifting the flask 10 and separating it from the conveying member 22 .

[0069] Example 5: Based on the above example, the following improvements are made: Figure 5 As shown, a correction cylinder 50 is fixedly mounted on the top surface of the moving member 41, and a push plate 51 is provided at the end of the correction cylinder 50. The correction cylinders 50 located on both sides of the flask 10 work simultaneously to correct the position of the flask 10 on the conveying member 22. In order to ensure the force balance of the lifting members 13 on both sides, and the correspondence between the top positioning groove and the lower pressure plate 432, correction cylinders 50 are provided on both sides to ensure that the position of the positioning groove before pressing the cover plate 14 corresponds to the position of the lower pressure plate 432, thereby preventing the occurrence of flameout.

[0070] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A continuous production device for low-pressure casting process, characterized in that: include: A sand box (10), with lifting members (13) provided on both sides of the sand box (10); A furnace plate (20), the furnace plate (20) is installed directly above the low-pressure furnace; A conveying member (22), the position of the conveying member (22) relative to the furnace plate (20) is adjustable, and is used to convey the sand box (10) to a predetermined position A; A liquid riser (30), the liquid riser (30) passes through the bottom of the furnace plate (20) and is partially exposed; The movable member (41) is provided with two groups, and is respectively located on both sides of the furnace plate (20). The position relative to the furnace plate (20) is adjustable, and is used to transport the flask (10) from a predetermined position A to a predetermined position B corresponding to the vertical position of the flask (10) and the riser (30). The moving direction of the movable member (41) is arranged parallel to the moving direction of the transport member (22); A jack (42) is installed on the moving member (41), and the jack (42) acts on the lifting member (13) to lift the sand box (10).

2. A continuous production device for low-pressure casting according to claim 1, characterized in that: The top of the sand box (10) is an open structure and is provided with an outer boss (11) on the periphery. A cover plate (14) is installed inside the outer boss (11). The cover plate (14) is evenly distributed with exhaust holes (142). The exhaust holes (142) are through holes with a diameter of 10 to 20 mm. A positioning groove I (12) is provided on the outer boss (11), and the position of the positioning groove I (12) and the position of the lifting member (13) are located on the same side; A positioning groove II (141) is provided on the cover plate (14), and the positioning groove II (141) corresponds to the positioning groove I (12); After the cover plate (14) is placed inside the outer boss (11), the bottom surfaces of the positioning groove I (12) and the positioning groove II (141) are flush; A lifting and pressing plate (43) is installed on the moving part (41), and the lifting and pressing plate (43) presses the cover plate (14) on the top of the sand box (10) through the positioning groove II (141) and the positioning groove I (12); The wall thickness of the sand box (10) is 10-15 mm, and the height of the outer boss (11) is 15-20 mm.

3. A continuous production device for low-pressure casting according to claim 2, characterized in that: The lifting and pressing plate member (43) comprises an electric hydraulic fully automatic lifting column (431) located at the bottom and a lower pressing plate (432) located at the top, and the lower pressing plate (432) is adapted to the positioning groove I (12) and the positioning groove II (141).

4. The continuous production device for low-pressure casting according to claim 1, characterized in that: The device also includes two slide rails I (21) fixedly mounted on the top surface of the furnace plate (20) and arranged in parallel; The conveying member (22) includes a slider 1 that is slidably fitted on the slide rail 1 (21), and limit blocks (23) are fixedly installed on both ends of the top of the slider 1. The limit blocks (23) are used to limit the position of the sand box (10); The length of the slider I is 1 / 4 to 1 / 2 of the slide rail I (21), and the top surface height of the slider I is at least higher than the top surface height of the liquid riser (30).

5. The continuous production device for low-pressure casting according to claim 4, characterized in that: There are at least two groups of sliders I on each group of slide rails I (21), which are distributed on both sides of the liquid rising pipe (30).

6. The continuous production device for low-pressure casting process according to claim 1, characterized in that: The device further comprises two parallel slide rails II (40), the two slide rails II (40) being respectively located on both sides of the furnace plate (20), and the arrangement direction of the two slide rails II (40) being consistent with the arrangement direction of the slide rail I (21); The moving part (41) comprises a slider II which is slidably matched on the slide rail II (40), and the jack (42) and the lifting and pressing plate (43) are both installed on the slider II.

7. The continuous production device for low-pressure casting process according to claim 1, characterized in that: The jacks (42) are provided in four groups of two, and the jacks (42) are electric hydraulic fully automatic lifting columns (431) with a stroke greater than or equal to 300 mm; There are four lifting members (13), which are arranged in groups of two. The two groups are located on both sides of the sand box (10), and the layout direction is perpendicular to the movement direction of the moving member (41). The bottom of the lifting member (13) is provided with a lifting groove, which is adapted to the top of the lifter (42). The top height of the lifter (42) is lower than the bottom height of the lifting member (13); The lifting piece (13) is 1 / 3 to 1 / 2 of the height from the lower end surface of the sand box (10), has a width of 150 to 200 mm, a length of 50 to 100 mm, and a wall thickness of 20 to 30 mm.

8. The continuous production device for low-pressure casting according to claim 1, characterized in that: A correction oil cylinder (50) is fixedly mounted on the top surface of the moving member (41), and a push plate (51) is provided at the end of the correction oil cylinder (50). The correction oil cylinders (50) located on both sides of the sand box (10) work simultaneously to correct the position of the sand box (10) on the conveying member (22).

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