Simple tool for preventing casting sand holes

Abstract

The utility model discloses a simple tool for preventing casting sand holes, which comprises a pulley yoke, a pulley block, a rope group and a baffle plate, the pulley block is fixedly connected with the pulley yoke, the rope group is wound on the pulley block, and the rope group is fixedly connected with the baffle plate; the pulley block comprises a front pulley, a rear pulley and a main pulley which are sequentially arranged from front to back, an adjustable pulley is arranged above the front pulley, and the adjustable pulley is connected with the pulley yoke through a height adjusting device; the rope group comprises a main line, the main line is wound on a main pulley, the lower end of the main line is connected with a driving device, and the upper end of the main line is divided into a front pull line and a rear pull line through a concentrator; the front pull wire is wound on the adjustable pulley and the front pulley, and the front pull wire is fixedly connected with the upper end of the baffle; and the rear pull wire is wound on the rear pulley and is fixedly connected with the upper end of the baffle plate. The sand box removing device is arranged on a production line, two sand boxes can be isolated, and floating sand of the sand box at a removing station is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, and specifically relates to a simple tooling for preventing sand holes in castings. Background Art

[0002] In current casting, in order to prevent sand holes in castings, after the sand mold is removed, it is often necessary to blow the floating sand in the cavity clean with compressed air. After the previous sand mold is blown clean, when blowing the subsequent sand mold, the floating sand is often blown into the previous sand mold, causing secondary floating sand, and the castings poured out will have sand hole defects. Therefore, it is necessary to make this simple tooling to isolate the two sand molds to achieve the purpose of preventing sand holes. Content of the Utility Model

[0003] Aiming at the above-mentioned defects existing in the prior art, the purpose of the utility model is to provide a simple tooling for preventing sand holes in castings.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A simple tooling for preventing sand holes in castings includes a pulley frame, a pulley group, a rope group, and a baffle. The pulley group is fixedly connected to the pulley frame. The rope group is wound around the pulley group, and the rope group is fixedly connected to the baffle. The pulley group includes a front pulley, a rear pulley, and a main pulley arranged in sequence from front to back. An adjustable pulley is arranged above the front pulley, and the adjustable pulley is connected to the pulley frame through a height adjustment device. The rope group includes a main line, the main line is wound around the main pulley, the lower end of the main line is connected to a driving device, and the upper end of the main line is branched into a front pull wire and a rear pull wire through a hub. The front pull wire is wound around the adjustable pulley and the front pulley, and the front pull wire is fixedly connected to the upper end of the baffle. The rear pull wire is wound around the rear pulley, and the rear pull wire is fixedly connected to the upper end of the baffle.

[0006] Further, three first fixing plates are arranged on the pulley frame, and the three first fixing plates correspond to the front pulley, the rear pulley, and the main pulley respectively;

[0007] Specifically, first U-shaped frames are fixedly arranged on the first fixing plates, and the front pulley, the rear pulley, and the main pulley are respectively rotatably connected to the corresponding first U-shaped frames.

[0008] Further, the first U-shaped frame and the first fixing plate are fixedly connected by fixing bolts and fixing nuts.

[0009] Further, a second fixing plate is arranged on the pulley frame; the height adjustment device includes an adjustable U-shaped frame and an adjustable bolt;

[0010] Specifically, the adjustable pulley is rotatably connected to the bifurcated wall of the adjustable U-shaped frame. The lower end of the adjustable U-shaped frame is symmetrically provided with fenders, and at least one adjustable bolt is passed through each fender, and the position of the adjustable bolt does not interfere with the adjustable pulley;

[0011] Specifically, the adjustable bolt passes through the second fixing plate from below, and the adjustable bolt is screwed and connected with a locking nut above the second fixing plate;

[0012] Specifically, the upper end of the adjustable bolt passes through the fender, the adjustable bolt is screwed and connected with an upper nut above the fender, and the adjustable bolt is screwed and connected with a lower nut below the fender. The upper nut and the lower nut jointly fix the fender.

[0013] Further, arc-shaped annular grooves are provided on the wheel surfaces of the main pulley, the rear pulley, the front pulley, and the adjustable pulley.

[0014] Further, a wire bundler is fixedly arranged on the pulley frame, and the front pull wire and the rear pull wire are connected to the hub after passing through the wire bundler.

[0015] The utility model has the following beneficial effects compared with the prior art:

[0016] 1. The utility model can isolate two sand boxes on the production line, preventing floating sand from appearing in the sand box at the removal station.

[0017] 2. The utility model reduces the precision requirements for manufacturing the pulley frame and the size cutting requirements for the rope group, and can quickly complete the layout of the tooling by adjusting the height of the adjustable pulley. Description of the Drawings

[0018] Figure 1 is a schematic use diagram of a simple tooling for preventing sand holes in castings of the utility model;

[0019] Figure 2 is a schematic structural diagram of a simple tooling for preventing sand holes in castings of the utility model;

[0020] Figure 3 is a schematic structural diagram of the height adjustment device in the utility model.

[0021] In the figure: 1. Front sand box; 2. Rear sand box; 3. Baffle; 4. Pulley frame; 5. Beam frame; 6. Main wire; 7. Front pull wire; 8. Rear pull wire; 9. Main pulley; 10. Rear pulley; 11. Front pulley; 12. Adjustable pulley; 13. Wire bundler; 14. Hub; 15. Axle; 16. Adjustable U-shaped frame; 17. Upper nut; 18. Lower nut; 19. Locking nut; 20. Second fixing plate; 21. Adjustable bolt; 22. Bearing; 23. Driving device. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 3 , a simple tooling for preventing sand holes in castings provided by the present invention includes a pulley frame 4, a pulley group, a rope group, and a baffle 3. The pulley group is fixedly connected to the pulley frame 4. The rope group is wound around the pulley group, and the rope group is fixedly connected to the baffle 3. The rope group is pulled by a driving device 6 to raise or lower the baffle 3.

[0024] The pulley group includes a front pulley 11, a rear pulley 10, and a main pulley 9 arranged in sequence from front to back. An adjustable pulley 12 is arranged above the front pulley 11. The rope group includes a main line 6. The main line 6 is wound around the main pulley 9. The lower end of the main line 6 is connected to a driving device 23. The upper end of the main line 6 is branched into a front pull line 7 and a rear pull line 8 through a hub 14. The front pull line 7 is wound around the adjustable pulley 12 and the front pulley 11, and the front pull line 7 is fixedly connected to the upper end of the baffle 3. The rear pull line 8 is wound around the rear pulley 10, and the rear pull line 8 is fixedly connected to the upper end of the baffle 3.

[0025] Three first fixing plates are arranged on the pulley frame 4, which respectively correspond to the front pulley 11, the rear pulley 10, and the main pulley 9. First U-shaped frames are fixedly arranged on the first fixing plates. The front pulley 11, the rear pulley 10, and the main pulley 9 are respectively rotatably connected to the corresponding first U-shaped frames through a rotating shaft and a bearing. The first U-shaped frame and the first fixing plate are fixedly connected through a fixing bolt and a fixing nut.

[0026] The pulley frame 4 is provided with a second fixing plate 20. The adjustable pulley 12 is connected to the second fixing plate 20 through a height adjusting device. The height adjusting device includes an adjustable U-shaped frame 16 and an adjustable bolt 21. The adjustable pulley 12 is rotatably connected to the bifurcated wall of the adjustable U-shaped frame 16 through a wheel shaft 15 and a bearing 22. Wings are symmetrically arranged at the lower end of the adjustable U-shaped frame 16. Each wing is provided with at least one adjustable bolt 21, and the position of the adjustable bolt does not interfere with the adjustable pulley.

[0027] Specifically, the adjustable bolt 21 passes through the second fixing plate 20 from below. The adjustable bolt 21 is screwed and connected with a locking nut 19 above the second fixing plate 20 to complete the fixation. The upper end of the adjustable bolt 21 passes through the fender. The adjustable bolt 21 is screwed and connected with an upper nut 17 above the fender, and the adjustable bolt 21 is screwed and connected with a lower nut 18 below the fender. The upper nut 17 and the lower nut 18 jointly fix the fender. By adjusting the upper nut 17 and the lower nut 18, the height of the adjustable pulley 12 is adjusted, the front stay wire 7 is retracted and released, and the horizontal suspension of the baffle 3 is realized. The adjustable height of the adjustable pulley 12 reduces the precision requirements for manufacturing the pulley frame 4 and the precision requirements for cutting the length of the rope group, and the layout of the tooling can be quickly completed.

[0028] Among them, arc-shaped annular grooves are provided on the wheel surfaces of the master pulley 9, the rear pulley 10, the front pulley 11, and the adjustable pulley 12 for the winding and laying of the rope group to prevent the rope group from slipping out.

[0029] Among them, a wire bundler 13 is fixedly arranged on the pulley frame 4. The front stay wire 7 and the rear stay wire 8 pass through the wire bundler 13 and are connected to the wire hub 14. The wire bundler 13 can block the wire hub 14 to prevent the baffle 3 from descending excessively.

[0030] Among them, the pulley frame 4 is erected on the production line through a support column or is erected on the production line by connecting with the beam frame 5 of the production line.

[0031] Among them, the driving device 23 is a stepping motor with high control precision.

[0032] Specifically, a usage method of a simple tooling for preventing sand holes in castings includes the following steps:

[0033] S1. Set up a simple tooling for preventing sand holes in castings in front of the blowing station of the sand box transportation line. By adjusting the positions of the upper nut 17 and the lower nut 18, the adjustable pulley 12 is moved up and down, the front stay wire 7 is retracted and released, and adjusted until the baffle 3 is horizontally suspended.

[0034] S2. Driven by the driving device 23, the baffle 3 is lowered to block two sand boxes, and the floating sand in the cavity of the front sand box 1 is blown with compressed air. The baffle 3 prevents the floating sand from being blown into the rear sand box 2.

[0035] S3. After the floating sand is blown clean, the driving device 23 raises the baffle 3, the sand box moves forward one, then the baffle 3 is lowered, and the previous operation is repeated.

[0036] In this way, the floating sand in the cavity can be effectively prevented, and further the sand holes in the castings can be effectively prevented.

[0037] In this application, all the parts themselves that are not elaborated and the connection methods of the various parts in this application belong to the well-known technologies in the technical field. They can be directly applied and will not be elaborated further.

[0038] In the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0040] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present 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 can be combined in a suitable manner in any one or more embodiments or examples.

[0041] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A simple tooling for preventing sand holes in castings, characterized in that, It includes a pulley frame, a pulley set, a rope set, and a baffle. The pulley set is fixedly connected to the pulley frame. The rope set is wound around the pulley set, and the rope set is fixedly connected to the baffle. The pulley set includes a front pulley, a rear pulley, and a main pulley arranged in sequence from front to back. An adjustable pulley is arranged above the front pulley, and the adjustable pulley is connected to the pulley frame through a height adjustment device. The rope set includes a main line. The main line is wound around the main pulley. The lower end of the main line is connected to a driving device. The upper end of the main line is branched out into a front pull line and a rear pull line through a hub. The front pull line is wound around the adjustable pulley and the front pulley, and the front pull line is fixedly connected to the upper end of the baffle. The rear pull line is wound around the rear pulley, and the rear pull line is fixedly connected to the upper end of the baffle.

2. The simple tooling for preventing sand holes in castings according to claim 1, characterized in that, Three first fixing plates are arranged on the pulley frame, and the three first fixing plates correspond to the front pulley, the rear pulley, and the main pulley respectively. First U-shaped frames are fixedly arranged on the first fixing plates, and the front pulley, the rear pulley, and the main pulley are respectively rotatably connected to the corresponding first U-shaped frames.

3. The simple tooling for preventing sand holes in castings according to claim 2, characterized in that, The first U-shaped frame and the first fixing plate are fixedly connected by fixing bolts and fixing nuts.

4. The simple tooling for preventing sand holes in castings according to claim 1, characterized in that, The pulley frame is provided with a second fixing plate. The height adjustment device includes an adjustable U-shaped frame and an adjustable bolt. The adjustable pulley is rotatably connected to the bifurcated wall of the adjustable U-shaped frame. Wings are symmetrically arranged at the lower end of the adjustable U-shaped frame. Each wing is provided with at least one adjustable bolt, and the position of the adjustable bolt does not interfere with the adjustable pulley. The adjustable bolt passes through the second fixing plate from below, and the adjustable bolt is screwed and connected with a locking nut above the second fixing plate. The upper end of the adjustable bolt passes through the wing, and the adjustable bolt is screwed and connected with an upper nut above the wing, and the adjustable bolt is screwed and connected with a lower nut below the wing. The upper nut and the lower nut jointly fix the wing.

5. The simple tooling for preventing sand holes in castings according to claim 1, characterized in that, Arc-shaped annular grooves are arranged on the wheel surfaces of the main pulley, the rear pulley, the front pulley, and the adjustable pulley.

6. The simple tooling for preventing sand holes in castings according to claim 1, characterized in that, A wire bundler is fixedly arranged on the pulley frame. The front pull line and the rear pull line pass through the wire bundler and then are connected to the hub.

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