Clamp box for string casting of cast steel wear-resistant rings

Abstract

The utility model discloses a clamp box for cast steel wear-resistant ring string casting, which comprises a box body, a movable baffle, a fastening pull rod, a fastening nut and a wedge-shaped pin, a box-shaped cavity jointly formed by the box body and the movable baffle can be used for placing a plurality of sand mould blocks for wear-resistant ring string casting, and the fastening pull rod, the fastening nut and the wedge-shaped pin are used for fastening. The gap between the left baffle and the wear-resistant ring string casting sand mold block and the gap between the right baffle and the wear-resistant ring string casting sand mold block are filled with casting molding sand and are compacted, and the outer surface of the wear-resistant ring string casting sand mold block is movably connected with a pouring cup. According to the clamp box for cast steel wear-resistant ring string casting, the clamp for fastening the sand mold block for cast steel wear-resistant ring string casting and the sand box for buried casting are combined into a whole, so that the operation is convenient, and the phenomenon of steel running during casting caused by local damage of some mold blocks during casting can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of casting tooling, in particular to a fixture box for casting a cast steel wear-resistant ring string. Background Art

[0002] The cast steel wear-resistant ring process can efficiently produce wear-resistant ring blanks, but there are also problems:

[0003] The area of ​​the core is large. If the sand-cutting holes are used, the molten steel often drills into the sand-cutting holes due to insufficient clamping force or uneven clamping force distribution, resulting in unnecessary molten steel consumption. If the sand-cutting holes are not used, more sand consumption will be caused. In addition, steel leakage during string casting is not only a serious quality accident, but also a major safety hazard. To prevent steel leakage, the commonly used method is the buried casting method, which is to hoist the entire string of clamped castings into the sand box, fill the molding sand on both sides or around the castings and compact them. However, this method is more cumbersome to operate, and the castings are prone to sand damage during the hoisting process, resulting in inclusion defects in the castings. Utility Model Content

[0004] The utility model aims to provide a fixture box for casting a cast steel wear-resistant ring string, so as to solve the problem in the above background technology that the sand mold is easily damaged during the lifting process, resulting in inclusion defects in the casting.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture box for cast steel wear-resistant ring string casting, comprising a box body, a movable baffle, a fastening rod, a fastening nut, and a wedge pin. A plurality of sand mold blocks for wear-resistant ring string casting can be placed in the box-shaped cavity composed of the box body and the movable baffle, and the fastening rod, the fastening nut, and the wedge pin are used for fastening, and then the gap between the left baffle and the sand mold block for wear-resistant ring string casting, and the gap between the right baffle and the sand mold block for wear-resistant ring string casting are filled with casting sand and compacted, and the outer surface of the sand mold block for wear-resistant ring string casting is movably connected with a pouring cup;

[0006] The sand mold block for wear-resistant ring string casting includes a casting cavity, a sand-saving hole, a riser, an inner gate, an air vent and an air vent groove. The sand-saving hole is preset at the center end of the casting cavity, the riser is installed at the top of the casting cavity, the inner gate is preset inside the riser, the air vent is preset between the riser and the sand mold block for wear-resistant ring string casting, and the air vent grooves are symmetrically distributed at the left and right ends of the sand mold block for wear-resistant ring string casting, and the air vent grooves are in a "Z"-shaped structure.

[0007] As a preferred technical solution of the present invention, the box body includes a bottom plate, a fixed baffle, a left baffle, and a right baffle. The fixed baffle is located at the top of the bottom plate, and the left baffle and the right baffle are respectively located at the left and right ends of the fixed baffle.

[0008] As a preferred technical solution of the present invention, the fixed baffle is provided with a first circular through hole, the center height of which is the same as the center height of the sand-jointing hole of the sand mold block for wear-resistant ring string casting.

[0009] As a preferred technical solution of the present invention, fastening holes are respectively provided inside the left baffle and the right baffle, and the fastening holes are used for fastening operations in conjunction with wedge pins.

[0010] As a preferred technical solution of the present invention, the spacing between the left baffle plate and the right baffle plate is greater than the width of the sand mold block for wear-resistant ring string casting by 250 to 400 mm.

[0011] As a preferred technical solution of the present invention, a second circular through hole and a cross boss are arranged inside the movable baffle. The cross boss is distributed in a ring with the second circular through hole as the center point. The center height of the second circular through hole is the same as the center height of the sand hole of the sand mold block for wear-resistant ring string casting.

[0012] As a preferred technical solution of the present invention, the tightening rod includes a rod body, a cross bracket, a hexagonal nut and a gasket, a trapezoidal external thread is arranged on the top end, the cross bracket is snap-connected to the outer surface of one end of the rod body, the trapezoidal external thread is arranged on the outer surface of the other end of the rod body, the hexagonal nut is fit-connected to the outer surface of one end of the cross bracket, and the hexagonal nut is movably connected to the rod body.

[0013] As a preferred technical solution of the present invention, the fastening nut includes a nut body, a cross rotating rod and a trapezoidal internal threaded hole, the trapezoidal internal threaded hole is arranged at the inner center end of the nut body, and the cross rotating rod is distributed in an annular manner on the outer surface of the nut body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model realizes the integration of the clamp for fastening the sand mold block for cast steel wear-resistant ring string casting and the sand box for embedding casting, which is not only convenient to operate, but also can prevent the phenomenon of steel running during pouring due to the partial damage of some mold blocks during pouring;

[0016] 2. The utility model adopts the method of side fastening of wedge pin + middle fastening of fastening rod, which has sufficient clamping force to prevent steel from running during pouring, and the clamping force is evenly distributed to prevent the thickening of some parts of the casting;

[0017] 3. The utility model adopts a sand-cutting hole in the middle of the sand mold block for casting a cast steel wear-resistant ring string, which reduces the consumption of molding sand, and adopts a method of tightening the middle of the tightening rod to prevent molten steel from drilling into the sand-cutting hole during pouring, causing unnecessary consumption of molten steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the sand mold block for wear-resistant ring string casting of the utility model;

[0019] Figure 2 It is a schematic diagram of the isometric side view of the sand mold block for wear-resistant ring string casting of the utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of the box body of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the box body of the utility model;

[0022] Figure 5 This is a schematic diagram of the isometric side view of the box body of the utility model;

[0023] Figure 6 This is a schematic diagram of the main structure of the movable baffle of the utility model;

[0024] Figure 7 This is a schematic cross-sectional structural diagram of the movable baffle of the utility model;

[0025] Figure 8 This is a schematic diagram of the main structure of the fastening pull rod of the utility model;

[0026] Fig. 9 It is a schematic diagram of the isometric side view of the fastening rod of the utility model;

[0027] Fig.10 This is a schematic diagram of the main structure of the fastening nut of the utility model;

[0028] Fig.11 This is a schematic cross-sectional structure diagram of a fastening nut of the utility model;

[0029] Fig.12 It is an isometric structural schematic diagram of an embodiment of the utility model.

[0030] In the figure: 1. box body; 101. bottom plate; 102. fixed baffle; 103. left baffle; 104. right baffle; 105. first circular through hole; 106. fastening hole; 2. movable baffle; 201. second circular through hole; 202. cross boss; 3. fastening rod; 301. rod body; 302. cross bracket; 303. hexagonal nut; 304. gasket; 305. trapezoidal external thread; 4. fastening nut; 401. nut body; 402. cross rotating rod; 403. trapezoidal internal thread hole; 5. wedge pin; 6. sand mold block for wear-resistant ring string casting; 601. casting cavity; 602. sand-section hole; 603. riser; 604. inner gate; 605. vent hole; 606. vent groove; 7. pouring cup. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0032] See also Figure 1-12 The utility model provides a technical solution: a fixture box for cast steel wear-resistant ring string casting, comprising a box body 1, a movable baffle 2, a fastening rod 3, a fastening nut 4, and a wedge pin 5. A plurality of sand mold blocks 6 for wear-resistant ring string casting can be placed in the box-shaped cavity composed of the box body 1 and the movable baffle 2, and the fastening rod 3, the fastening nut 4, and the wedge pin 5 are used for fastening, and then the gap between the left baffle 103 and the sand mold block 6 for wear-resistant ring string casting, and the gap between the right baffle 104 and the sand mold block 6 for wear-resistant ring string casting are filled with casting sand and compacted, and the outer surface of the sand mold block 6 for wear-resistant ring string casting is movably connected with a pouring cup 7;

[0033] The sand mold block 6 for wear-resistant ring string casting includes a casting cavity 601, a sand-saving hole 602, a riser 603, an inner gate 604, an air outlet 605 and an air outlet groove 606. The sand-saving hole 602 is preset at the center end of the casting cavity 601, the riser 603 is installed at the top of the casting cavity 601, the inner gate 604 is preset inside the riser 603, the air outlet 605 is preset between the riser 603 and the sand mold block 6 for wear-resistant ring string casting, and the air outlet groove 606 is symmetrically distributed at the left and right ends of the sand mold block 6 for wear-resistant ring string casting, and the air outlet groove 606 is a "Z"-shaped structure.

[0034] The box body 1 includes a bottom plate 101 , a fixed baffle 102 , a left baffle 103 , and a right baffle 104 . The fixed baffle 102 is located at the top of the bottom plate 101 , and the left baffle 103 and the right baffle 104 are located at the left and right ends of the fixed baffle 102 , respectively.

[0035] The fixed baffle 102 is provided with a first circular through hole 105 , the center height of which is the same as the center height of the sand-jointing hole 602 of the sand mold block 6 for wear-resistant ring string casting.

[0036] The left baffle plate 103 and the right baffle plate 104 are respectively provided with fastening holes 106 , and the fastening holes 106 are used for fastening operations in cooperation with the wedge pins 5 .

[0037] The distance between the left baffle plate 103 and the right baffle plate 104 is greater than the width of the sand mold block 6 for wear-resistant ring string casting by 250 to 400 mm.

[0038] A second circular through hole 201 and a cross boss 202 are provided inside the movable baffle 2. The cross boss 202 is distributed in a ring shape with the second circular through hole 201 as the center point. The center height of the second circular through hole 201 is the same as the center height of the sand hole 602 of the sand mold block 6 for wear-resistant ring string casting.

[0039] The tightening rod 3 includes a rod body 301, a cross bracket 302, a hexagonal nut 303 and a gasket 304, and a trapezoidal external thread 305 is arranged on the top end. The cross bracket 302 is snap-fitted and connected to the outer surface of one end of the rod body 301, and the trapezoidal external thread 305 is arranged on the outer surface of the other end of the rod body 301. The hexagonal nut 303 is fit-connected to the outer surface of one end of the cross bracket 302, and the hexagonal nut 303 is movably connected to the rod body 301.

[0040] The fastening nut 4 includes a nut body 401 , a cross rotating rod 402 and a trapezoidal internal threaded hole 403 . The trapezoidal internal threaded hole 403 is arranged at the inner center end of the nut body 401 , and the cross rotating rod 402 is distributed in an annular manner on the outer surface of the nut body 401 .

[0041] like Figure 1 , Figure 2 The sand mold block 6 for wear-resistant ring string casting is made of water glass sand, and the whole mold is divided. The middle casting cavity 601 is a circular cavity, and a sand-sectioning hole 602 is provided in the center of the ring. A riser 603 is provided at the upper end of the casting cavity 601, and an inner gate 604 is provided at the center of the riser 603. This inner gate is a through hole, which can connect the cavities of adjacent blocks; in addition, an air outlet 605 is provided at the top of the riser 603, and air outlet grooves 606 are provided on both sides of the casting cavity 601.

[0042] The steps of producing cast steel wear-resistant rings by continuous casting process in this embodiment are as follows:

[0043] Step 1: Lift the box 1 to the pouring station, prepare the movable baffle 2, the fastening rod 3, the fastening nut 4, and the wedge pin 5. After all the assembly work of the mold is completed, it can be poured directly without lifting and transferring the position;

[0044] Step 2, sequentially load the sand blocks 6 for wear-resistant ring string casting into the cavity of the box body 1, the sand blocks are arranged in a row one by one, and the sand-jointing hole 602 of each sand block is aligned with the circular through hole 105;

[0045] Step 3, install one of the sand mold blocks with a top gate on the upper end in the middle of a row of casting molds, and this mold block is the first mold block for casting;

[0046] Step 4, installing a pouring cup 7 at the upper end of the first casting block;

[0047] Step 5: After all the casting molds are assembled, place the movable baffle 2 at the end of the sand mold block, and align the circular through hole 201 of the movable baffle 2 with the sand-section hole 602 of the sand mold block;

[0048] Step 6: insert the wedge pin 5 into the fastening hole 106 and tap it to tighten the mold for the first time;

[0049] Step 7, insert the fastening rod 3 from the circular through hole 105 into the circular through hole 201 of the movable baffle 2, screw in the fastening nut 4, and rotate and tighten it for the second tightening;

[0050] Step 8, then tap the wedge pin 5 and tighten the fastening nut 4 in sequence until the mold is completely locked;

[0051] Step 9: Fill the gap between the left baffle plate 103 and the sand mold block 6 for wear-resistant ring string casting, and the gap between the right baffle plate 104 and the sand mold block 6 for wear-resistant ring string casting with casting sand and tamp it fully. All assembly operations of the casting mold are completed and waiting for pouring.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture box for casting a cast steel wear-resistant ring string, characterized in that: It comprises a box body (1), a movable baffle (2), a fastening rod (3), a fastening nut (4), and a wedge pin (5). A plurality of sand mold blocks (6) for wear-resistant ring string casting can be placed in the box-shaped cavity formed by the box body (1) and the movable baffle (2). The sand mold blocks (6) for wear-resistant ring string casting are fastened using the fastening rod (3), the fastening nut (4), and the wedge pin (5). Then, the gap between the left baffle (103) and the sand mold block (6) for wear-resistant ring string casting, and the gap between the right baffle (104) and the sand mold block (6) for wear-resistant ring string casting are filled with casting sand and compacted. The outer surface of the sand mold block (6) for wear-resistant ring string casting is movably connected with a pouring cup (7); The sand mold block (6) for wear-resistant ring string casting comprises a casting cavity (601), a sand-cutting hole (602), a riser (603), an ingate (604), an air outlet hole (605) and an air outlet groove (606). The sand-cutting hole (602) is preset at the center end of the casting cavity (601), the riser (603) is installed at the top of the casting cavity (601), the ingate (604) is preset inside the riser (603), the air outlet hole (605) is preset between the riser (603) and the sand mold block (6) for wear-resistant ring string casting, and the air outlet grooves (606) are symmetrically distributed at the left and right ends of the sand mold block (6) for wear-resistant ring string casting, and the air outlet grooves (606) are in a "Z"-shaped structure.

2. A fixture box for casting a series of cast steel wear-resistant rings according to claim 1, characterized in that: The box body (1) comprises a bottom plate (101), a fixed baffle (102), a left baffle (103), and a right baffle (104); the fixed baffle (102) is located at the top of the bottom plate (101), and the left baffle (103) and the right baffle (104) are respectively located at the left and right ends of the fixed baffle (102).

3. A fixture box for casting a series of cast steel wear-resistant rings according to claim 2, characterized in that: The fixed baffle (102) is provided with a first circular through hole (105), the center height of which is the same as the center height of the sand-jointing hole (602) of the sand mold block (6) for wear-resistant ring string casting.

4. A fixture box for casting a series of cast steel wear-resistant rings according to claim 2, characterized in that: The left baffle plate (103) and the right baffle plate (104) are respectively provided with fastening holes (106) therein, and the fastening holes (106) are used to cooperate with the wedge pins (5) to perform fastening operations.

5. A fixture box for casting a cast steel wear-resistant ring series according to claim 1, characterized in that: The distance between the left baffle plate (103) and the right baffle plate (104) is greater than the width of the sand mold block (6) for wear-resistant ring string casting by 250 to 400 mm.

6. A fixture box for casting a series of cast steel wear-resistant rings according to claim 1, characterized in that: A second circular through hole (201) and a cross boss (202) are arranged inside the movable baffle (2); the cross boss (202) is distributed in a ring shape with the second circular through hole (201) as the center point; the center height of the second circular through hole (201) is the same as the center height of the sand-jointing hole (602) of the sand mold block (6) for wear-resistant ring string casting.

7. A fixture box for casting a series of cast steel wear-resistant rings according to claim 1, characterized in that: The tightening rod (3) comprises a rod body (301), a cross bracket (302), a hexagonal nut (303) and a gasket (304), and a trapezoidal external thread (305) is arranged at the top end. The cross bracket (302) is snap-fitted and connected to the outer surface of one end of the rod body (301), and the trapezoidal external thread (305) is arranged on the outer surface of the other end of the rod body (301). The hexagonal nut (303) is fitted and connected to the outer surface of one end of the cross bracket (302), and the hexagonal nut (303) is movably connected to the rod body (301).

8. A fixture box for casting a series of cast steel wear-resistant rings according to claim 1, characterized in that: The fastening nut (4) comprises a nut body (401), a cross rotating rod (402) and a trapezoidal internal threaded hole (403); the trapezoidal internal threaded hole (403) is arranged at the inner center end of the nut body (401); and the cross rotating rod (402) is distributed in an annular manner on the outer surface of the nut body (401).

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