Casting balance drawing device

Abstract

The utility model relates to a casting balance drawing device which comprises a base, a lifting lug and a plurality of balance mechanisms, and the lifting lug is arranged on the base. The balance mechanism comprises connecting pieces and telescopic pieces, the first ends of the connecting pieces are connected with the base, the connecting pieces can rotate and swing, and the multiple connecting pieces are evenly distributed on the base. The first end of the telescopic piece is rotationally connected with the second end of the connecting piece, and the second end of the telescopic piece is connected with the mold. After the travelling crane ascends to the steel wire ropes or the chains of the multiple telescopic pieces and is tensioned by the lifting appliances, the connecting pieces rotate according to the stressed positions, and the multiple telescopic pieces correct the angles of the connecting pieces under the lifting force, so that the tensile force of each connecting piece is initially balanced. During drawing, tension balance on the telescopic pieces is adjusted by adjusting the lengths of the telescopic pieces, so that the tension on each telescopic piece is equal, the mold is pulled out of the sand mold under the action of the balance tension, the balance drawing process in molding is completed, and the situation that the sand mold is damaged due to unbalanced hoisting during drawing of hoisting equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sand casting, in particular to a casting balanced demoulding device. Background Art

[0002] Sand casting refers to a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Since the molding materials used in sand casting are cheap and easy to obtain, the mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings, it has long been the basic process in casting production.

[0003] The main steps of sand casting include drawing, moulding, core making, modeling, melting, pouring, cleaning, etc. Among them, demolding in the core making process is an important step in the entire sand casting. Large castings generally use lifting equipment to remove the pattern. In the process of demolding, it is easy to destroy the sand mold due to unbalanced lifting, affecting the casting quality. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a casting balanced demolding device, which solves the technical problem that the sand mold is destroyed due to unbalanced hoisting when the hoisting equipment is demolding.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the casting balanced demolding device of the utility model comprises a base, a lifting lug and a plurality of balancing mechanisms;

[0008] The lifting lug is arranged on the base;

[0009] The balancing mechanism comprises a connecting member and a telescopic member, wherein a first end of the connecting member is connected to the base, the connecting member can rotate and swing, and a plurality of the connecting members are evenly distributed on the base;

[0010] The first end of the telescopic member is rotatably connected to the second end of the connecting member, and the second end of the telescopic member is connected to the mold.

[0011] Optionally, the telescopic member is an oil cylinder, the oil cylinder is connected to an oil pump, and a plurality of the oil cylinders are connected in parallel to the same oil pump;

[0012] The cylinder body of the oil cylinder is rotatably connected to the second end of the connecting piece, and the piston rod of the oil cylinder is connected to the mold.

[0013] Optionally, the telescopic member is a cylinder, the cylinder is connected to an air source, and a plurality of the cylinders are connected in parallel to the same air source;

[0014] The cylinder body of the cylinder is rotatably connected to the second end of the connecting piece, and the piston rod of the cylinder is connected to the mold.

[0015] Optionally, the connecting member includes a support tube, a spherical pressure block and a bowl-shaped seat;

[0016] The bowl-shaped seat is fixedly arranged on the base, a first through hole is formed on the bottom surface of the bowl-shaped seat, a second through hole is formed on the base, and the first through hole is coaxial with the second through hole;

[0017] The support tube is sleeved in the first through hole and the second through hole, the first end of the support tube is connected to the spherical pressing block, and the telescopic member is rotatably connected to the second end of the support tube.

[0018] Optionally, the inner diameters of the first through hole and the second through hole are both larger than the outer diameter of the support tube, and the second through hole is a gradually expanding hole, and the inner diameter of the second through hole near the first end of the support tube is smaller than the inner diameter near the second end of the support tube.

[0019] Optionally, the connecting member further comprises a connecting seat, the connecting seat is arranged at the second end of the support tube, and the telescopic member is rotatably connected to the connecting seat via an axle pin.

[0020] Optionally, the base is a circular base, and a plurality of the connecting members are evenly arranged along the circumference of the circular base.

[0021] Optionally, a plurality of ribs are provided on the lifting ear, and the ribs are connected to the base.

[0022] (III) Beneficial effects

[0023] After the crane goes up to the wire rope or chain of multiple telescopic parts and tightens the lifting equipment, the connecting parts rotate according to the position of the force, and then the multiple telescopic parts automatically correct the angle of the connecting parts according to the force conditions under the lifting force, so that the tension of each connecting part is initially balanced. When demolding, the tension balance on each telescopic part is adjusted by adjusting the length of the telescopic part, so that the tension on each telescopic part is equal, and the mold is pulled out of the sand mold under the action of the balanced tension, completing the balanced demolding process in the molding, effectively avoiding the situation where the sand mold is destroyed due to unbalanced hoisting when the hoisting equipment is demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the casting balanced demolding device of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the base of the casting balanced demolding device of the utility model;

[0026] Figure 3The utility model is a schematic diagram of the pipeline connection of the telescopic parts of the casting balanced demolding device.

[0027] [Description of Reference Numerals]

[0028] 1: telescopic part; 2: connecting seat; 3: pin shaft; 4: base;

[0029] 9: lifting ear; 10: rib plate; 11: spherical pressure block; 12: bowl-shaped seat; 13: support tube;

[0030] 21: Two-position five-way solenoid valve. DETAILED DESCRIPTION

[0031] In order to better explain the utility model and facilitate understanding, the utility model is described in detail below with reference to the accompanying drawings and through specific implementation methods. Figure 1 The orientation is used as a reference.

[0032] Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0033] like Figure 1 and 2 As shown, the utility model provides a casting balanced demolding device, which is used for demolding and hoisting of large castings. The casting balanced demolding device includes a base 4, a lifting ear 9 and a plurality of balancing mechanisms. The ear is arranged on the base 4 for connecting the crane. The balancing mechanism includes a connecting member and a telescopic member 1, wherein the first end of the connecting member is connected to the base 4, the connecting member can rotate and swing, and a plurality of connecting members are evenly distributed on the base 4. The first end of the telescopic member 1 is rotatably connected to the second end of the connecting member, and the second end of the telescopic member 1 is connected to the mold through a wire rope or a chain. After the wire rope or chain of the crane going up to the plurality of telescopic members 1 is tightened, the connecting member rotates according to the position of the force, and then the plurality of telescopic members 1 automatically correct the angle of the connecting member according to the force conditions under the lifting force, so that the tension of each connecting member is initially balanced. When demolding, the tension balance on each telescopic part 1 is adjusted by adjusting the length of the telescopic part 1, so that the tension on each telescopic part 1 is equal. The mold is pulled out of the sand mold under the action of the balanced tension, completing the balanced demolding process in the molding process, and effectively avoiding the situation where the sand mold is destroyed due to unbalanced hoisting when the hoisting equipment is demolded.

[0034] In the first embodiment, the telescopic member 1 is an oil cylinder, which is connected to an oil pump, and multiple oil cylinders are connected in parallel to the same oil pump. The cylinder body of the oil cylinder is rotatably connected to the second end of the connecting member, and the piston rod of the oil cylinder is connected to the mold. In a specific embodiment, see Figure 3 There are 4 oil cylinders, which are connected in parallel to a 2-position 5-way solenoid valve 21, and connected to the oil pump through the 2-position 5-way solenoid valve 21. When demolding, each cylinder is pressurized, because the 4 cylinders are connected in parallel to a pressure source, and the 4 steel wire ropes or chains and other hanging tools automatically balance the tension of each steel wire rope under active pressure according to the force of each steel wire rope, so that the tension on each steel wire rope is equal.

[0035] In the second embodiment, the telescopic member 1 is a cylinder, which is connected to an air source, and multiple cylinders are connected in parallel to the same pressurized air source. The cylinder body of the cylinder is rotatably connected to the second end of the connecting member, and the piston rod of the cylinder is connected to the mold. In a specific embodiment, see Figure 3 The number of air cylinders is 4. The connection method and working principle of the air cylinders are the same as those of the oil cylinders, so they will not be repeated here.

[0036] See also Figure 1 , the connecting part includes a support tube 13, a spherical pressure block 11 and a bowl-shaped seat 12. Among them, the bowl-shaped seat 12 is fixedly arranged on the base 4, preferably by welding. A first through hole is provided on the bottom surface of the bowl-shaped seat 12, and a second through hole is provided on the base 4, and the first through hole is coaxially connected with the second through hole. The support tube 13 is sleeved in the first through hole and the second through hole, and the first end of the support tube 13 passes through the second through hole and the first through hole from bottom to top in sequence and then connects with the spherical pressure block 11, and the arc surface of the spherical pressure block 11 abuts against the inner concave arc surface of the bowl-shaped seat 12, so that the spherical pressure block 11 can rotate freely in the bowl-shaped seat 12. The cylinder of the telescopic member 1 is rotatably connected to the second end of the support tube 13.

[0037] Furthermore, the inner diameters of the first through hole and the second through hole are both larger than the outer diameter of the support tube 13, and the second through hole is a gradually expanding hole, and the inner diameter of the second through hole near the first end of the support tube 13 is smaller than the inner diameter near the second end of the support tube 13, so that the support tube 13 can swing within a set angle range, and the maximum angle range of the swing can be adjusted by adjusting the shape of the gradually expanding hole.

[0038] Furthermore, the connecting member further comprises a connecting seat 2 , which is arranged at the second end of the support tube 13 , and the telescopic member 1 is rotatably connected to the connecting seat 2 via a pin shaft 3 .

[0039] See also Figure 1 and Figure 2The base 4 is preferably a circular base 4, which is rotationally balanced, and a plurality of connecting members are evenly arranged along the circumference of the circular base 4 to increase the balance during lifting. A plurality of ribs 10 are arranged on the lifting lug 9, and the ribs 10 are connected to the base 4. In a preferred embodiment, the base 4, the lifting lug 9 and the ribs 10 are welded into a whole to improve the overall strength.

[0040] After the crane goes up to the wire rope or chain of the multiple telescopic parts 1 and tightens the lifting equipment, the connecting parts rotate according to the position of the force, and then the multiple telescopic parts 1 automatically correct the angle of the connecting parts according to the force under the lifting force, so that the tension of each connecting part is initially balanced. When demolding, the tension balance on each telescopic part 1 is adjusted by adjusting the length of the telescopic part 1, so that the tension on each telescopic part 1 is equal, and the mold is pulled out of the sand mold under the action of the balanced tension, completing the balanced demolding process in the molding, effectively avoiding the situation where the sand mold is destroyed due to unbalanced hoisting when the hoisting equipment is demolding.

[0041] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0044] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A casting balanced demolding device, characterized in that: The casting balanced demolding device comprises a base (4), a lifting lug (9) and a plurality of balancing mechanisms; The lifting lug (9) is arranged on the base (4); The balancing mechanism comprises a connecting member and a telescopic member (1), the first end of the connecting member is connected to the base (4), the connecting member is capable of rotating and swinging, and a plurality of the connecting members are evenly distributed on the base (4); The first end of the telescopic member (1) is rotatably connected to the second end of the connecting member, and the second end of the telescopic member (1) is connected to the mold.

2. The casting balanced demolding device according to claim 1, characterized in that: The telescopic member (1) is an oil cylinder, the oil cylinder is connected to an oil pump, and a plurality of the oil cylinders are connected in parallel to the same oil pump; The cylinder body of the oil cylinder is rotatably connected to the second end of the connecting piece, and the piston rod of the oil cylinder is connected to the mold.

3. The casting balanced demolding device according to claim 1, characterized in that: The telescopic member (1) is a cylinder, the cylinder is connected to an air source, and a plurality of the cylinders are connected in parallel to the same air source; The cylinder body of the cylinder is rotatably connected to the second end of the connecting piece, and the piston rod of the cylinder is connected to the mold.

4. The casting balanced demolding device according to claim 1, characterized in that: The connecting piece comprises a support tube (13), a spherical pressing block (11) and a bowl-shaped seat (12); The bowl-shaped seat (12) is fixedly arranged on the base (4); a first through hole is formed on the bottom surface of the bowl-shaped seat (12); a second through hole is formed on the base (4); and the first through hole is coaxial with the second through hole. The support tube (13) is sleeved in the first through hole and the second through hole, the first end of the support tube (13) is connected to the spherical pressure block (11), and the telescopic member (1) is rotatably connected to the second end of the support tube (13).

5. The casting balanced demolding device according to claim 4, characterized in that: The inner diameters of the first through hole and the second through hole are both larger than the outer diameter of the support tube (13), and the second through hole is a gradually expanding hole, and the inner diameter of the second through hole near the first end of the support tube (13) is smaller than the inner diameter near the second end of the support tube (13).

6. The casting balanced demolding device according to claim 4, characterized in that: The connecting member also includes a connecting seat (2), the connecting seat (2) is arranged at the second end of the support tube (13), and the telescopic member (1) is rotatably connected to the connecting seat (2) via a pin shaft (3).

7. The casting balanced demolding device according to claim 1, characterized in that: The base (4) is a circular base (4), and a plurality of connecting members are evenly arranged along the circumference of the circular base (4).

8. The casting balanced demolding device according to claim 1, characterized in that: A plurality of ribs (10) are provided on the lifting ears (9), and the ribs (10) are connected to the base (4).

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