Sand blowing mechanism of molding machine

Abstract

The utility model belongs to the technical field of molding machines, and particularly relates to a sand blowing mechanism of a molding machine, which comprises a base, a first hydraulic cylinder is fixed at the top of the base, a molding bottom die is fixed at the ejection end of the first hydraulic cylinder, a support is fixed at the top of the base, and a second hydraulic cylinder is fixed on the inner wall of the top of the support. According to the sand blowing mechanism of the molding machine, the base, the molding bottom die, the support, the pressing plate, the air blowing assembly, the fixing frame, the collecting hopper, the rotating shaft, the spiral blade and the material blocking assembly are arranged, in the using process of the sand blowing mechanism of the molding machine, sand on the surface of the molding bottom die can be automatically blown off through the arranged movable air blowing assembly, manual operation is not needed, time and labor are saved, and the production efficiency is improved. The sand blowing device is simple in structure and capable of collecting blown-off sand under the cooperation of a collecting hopper, and meanwhile, a rotating spiral blade is arranged in the collecting hopper, so that it is more convenient for workers to discharge the sand collected in the collecting hopper in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of molding machines, in particular to a sand blowing mechanism of a molding machine. Background Art

[0002] The molding machine is a casting equipment used to make sand molds. Its main functions are: filling sand, filling loose molding sand into the sand box; compacting the molding sand, compacting the loose molding sand in the sand box by different methods such as vibration, compaction, vibration pressure, and shot pressure, so that the sand mold has the necessary strength during transportation and pouring; demolding, using different mechanisms to take the pattern out of the compacted sand mold. During the operation of the molding machine, excess sand will fall off during the extrusion molding. In order to avoid affecting the subsequent molding, it is necessary to blow off the sand that falls on the surface of the molding bottom mold. However, during the use of the current molding machine, the sand on the top of the molding machine bottom mold is generally blown off by a manual handheld air pump jet nozzle. Manual operation is time-consuming and labor-intensive. Therefore, we propose a sand blowing mechanism for a molding machine to solve the above problems. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a sand blowing mechanism for a molding machine, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A sand blowing mechanism of a molding machine comprises a base, a first hydraulic cylinder is fixed on the top of the base, a molding bottom mold is fixed to the ejection end of the first hydraulic cylinder, a bracket is fixed on the top of the base, a second hydraulic cylinder is fixed to the top inner wall of the bracket, a pressure plate is fixed to the ejection end of the second hydraulic cylinder, an air blowing assembly is arranged on the top inner wall of the bracket, two fixing frames are fixed on the top of the base, a collecting bucket is fixed on the top of the two fixing frames, the interior of the collecting bucket is rotatably connected to two rotating shafts through bearings, spiral blades are fixed on the surfaces of the rotating shafts, and a material blocking assembly is arranged on one side wall of the collecting bucket.

[0008] Furthermore, the air blowing assembly includes four connecting plates fixed to the inner wall of the top of the bracket, wherein a screw rod is rotatably connected between two connecting plates through a bearing, a movable frame is threadedly connected to the surface of the screw rod, an air blowing pipe is fixed on the movable frame, and a spiral hose is connected and fixed at the air inlet of the air blowing pipe.

[0009] Furthermore, a limiting rod is fixed between the two connecting plates, and the movable frame slides on the surface of the limiting rod.

[0010] Furthermore, the material blocking assembly includes a blocking seat fixed at the discharge port of the collecting bucket, and the slots opened on the top of the blocking seat are plugged with plug plates, and the tops of the two plug plates are fixed with cross plates, and the top of one of the fixed frames is fixed with an electric push rod, and the ejection end of the electric push rod is fixedly connected to the bottom of the cross plate.

[0011] Furthermore, guide rods are provided inside the two through holes opened at the top of the transverse plate, and the bottom ends of the guide rods are fixedly connected to one of the fixing frames.

[0012] Furthermore, transmission wheels are fixed on the surfaces of the two rotating shafts, and the two transmission wheels are connected by belt transmission.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a sand blowing mechanism for a molding machine, which has the following beneficial effects:

[0015] The utility model provides a base, a molding bottom mold, a bracket, a pressure plate, an air blowing component, a fixing frame, a collecting bucket, a rotating shaft, a spiral blade and a material blocking component. During the sand blowing mechanism of the molding machine, the sand body on the surface of the molding bottom mold can be automatically blown off by utilizing the arranged movable air blowing component, and no manual operation is required, thus saving time and labor. Moreover, with the cooperation of the collecting bucket, the blown-off sand body can be collected. At the same time, a rotating spiral blade is arranged inside the collecting bucket, so that it will be more convenient for the staff to discharge the sand body collected in the collecting bucket later when they need to. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the back of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the support structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the collecting bucket of the utility model.

[0020] In the figure: 1. base; 2. first hydraulic cylinder; 3. modeling bottom mold; 4. bracket; 5. second hydraulic cylinder; 6. pressure plate; 7. air blowing assembly; 701. connecting plate; 702. screw rod; 703. movable frame; 704. air blowing pipe; 705. spiral hose; 706. limit rod; 8. fixed frame; 9. collecting bucket; 10. rotating shaft; 11. spiral blade; 12. material blocking assembly; 1201. blocking seat; 1202. plug plate; 1203. horizontal plate; 1204. electric push rod; 1205. guide rod; 13. transmission wheel; 14. belt. DETAILED DESCRIPTION

[0021] 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.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a sand blowing mechanism of a molding machine proposed in one embodiment of the utility model comprises a base 1, a first hydraulic cylinder 2 is fixed on the top of the base 1, a molding bottom mold 3 is fixed to the ejection end of the first hydraulic cylinder 2, a bracket 4 is fixed on the top of the base 1, a second hydraulic cylinder 5 is fixed to the top inner wall of the bracket 4, a pressing plate 6 is fixed to the ejection end of the second hydraulic cylinder 5, an air blowing assembly 7 is arranged on the top inner wall of the bracket 4, two fixing frames 8 are fixed on the top of the two fixing frames 8, a collecting bucket 9 is fixed on the top of the collecting bucket 9, two rotating shafts 10 are rotatably connected to the inside of the collecting bucket 9 through bearings, transmission wheels 13 are fixed to the surfaces of the two rotating shafts 10, and the two transmission wheels 13 are connected through belts 14 for transmission. Under the action of a motor, the two rotating shafts 10 can be driven to rotate at the same time, thereby saving energy. About production cost, spiral blades 11 are fixed on the surface of the rotating shaft 10, and a material blocking component 12 is provided on one side wall of the collecting bucket 9. When the sand blowing mechanism of this molding machine is used, the air blowing component 7 can be connected and fixed with the compressed air pipeline, and then the air blowing component 7 that moves by itself can automatically blow off the sand body on the top of the molding bottom mold 3, and the blown sand body will eventually fall into the collecting bucket 9. The set material blocking component 12 can be used to block the sand body so that it can be retained in the collecting bucket 9. When the collected sand body needs to be discharged later, the blocking of the collecting bucket 9 by the material blocking component 12 is released, and then the motor is started to drive the rotating shaft 10 to rotate. After the rotating shaft 10 rotates, it can drive the spiral blades 11 to rotate, so that the sand body inside the collecting bucket 9 can be pushed out.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the air blowing assembly 7 includes four connecting plates 701 fixed to the inner wall of the top of the bracket 4, wherein a screw rod 702 is rotatably connected between two connecting plates 701 through a bearing, and a movable frame 703 is threadedly connected to the surface of the screw rod 702, wherein a limiting rod 706 is fixed between the two connecting plates 701, and the movable frame 703 slides on the surface of the limiting rod 706 to play a limiting role. When the screw rod 702 rotates to drive the movable frame 703 to move, it can be prevented that the movable frame 703 will rotate synchronously with the screw rod 702, and the movable frame 703 is fixed There is an air blowing pipe 704, and a spiral hose 705 is connected and fixed at the air inlet of the air blowing pipe 704. When in use, when the spiral hose 705 is connected and fixed to the compressed air pipeline, the gas will be blown out from the air blowing pipe 704, and then the motor is started to drive the screw rod 702 to rotate. After the screw rod 702 rotates, it will drive the movable frame 703 to move, and the movable frame 703 can drive the air blowing pipe 704 to move after moving, so that the sand body on the top of the molding bottom mold 3 can be blown off. After the air blowing is completed, the air blowing pipe 704 can be reset to facilitate the next air blowing work.

[0025] like Figure 2 As shown, in some embodiments, the material blocking assembly 12 includes a blocking seat 1201 fixed at the discharge port of the collecting hopper 9, and the slots opened on the top of the blocking seat 1201 are plugged with plug plates 1202, and the tops of the two plug plates 1202 are fixed with cross plates 1203, and the two through holes opened on the top of the cross plates 1203 are provided with guide rods 1205. The bottom ends of the guide rods 1205 are fixedly connected to one of the fixing frames 8, which can play an auxiliary supporting role for the cross plates 1203, so that they will be more stable during the up and down movement. An electric push rod 1204 is fixed to the top of a fixed frame 8, and the ejection end of the electric push rod 1204 is fixedly connected to the bottom of the cross plate 1203. When the sand inside the collecting bucket 9 needs to be cleaned, the ejection end of the electric push rod 1204 can be started to drive the cross plate 1203 to move upward. After the cross plate 1203 moves upward, it will drive the two plug plates 1202 to move upward, and then the two upward plug plates 1202 will release the blockage of the sand outlet of the collecting bucket 9. At this time, the sand can be discharged into the collecting bucket 9. After the sand discharge is completed, the plug plates 1202 can be reset again.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sand blowing mechanism of a molding machine, comprising a base (1), characterized in that: A first hydraulic cylinder (2) is fixed on the top of the base (1), a molding bottom mold (3) is fixed on the ejection end of the first hydraulic cylinder (2), a bracket (4) is fixed on the top inner wall of the bracket (4), a pressure plate (6) is fixed on the ejection end of the second hydraulic cylinder (5), an air blowing assembly (7) is arranged on the top inner wall of the bracket (4), two fixing frames (8) are fixed on the top of the base (1), a collecting bucket (9) is fixed on the top of the two fixing frames (8), two rotating shafts (10) are rotatably connected to the inside of the collecting bucket (9) through bearings, spiral blades (11) are fixed on the surface of the rotating shafts (10), and a material blocking assembly (12) is arranged on one side wall of the collecting bucket (9).

2. The sand blowing mechanism of a molding machine according to claim 1, characterized in that: The air blowing assembly (7) comprises four connecting plates (701) fixed to the inner wall of the top of the bracket (4), wherein a screw rod (702) is rotatably connected between two connecting plates (701) via a bearing, a movable frame (703) is threadedly connected to the surface of the screw rod (702), an air blowing pipe (704) is fixed on the movable frame (703), and a spiral hose (705) is connected and fixed at the air inlet of the air blowing pipe (704).

3. The sand blowing mechanism of a molding machine according to claim 2, characterized in that: A limiting rod (706) is fixed between the two connecting plates (701), and the movable frame (703) slides on the surface of the limiting rod (706).

4. The sand blowing mechanism of a molding machine according to claim 1, characterized in that: The material blocking assembly (12) comprises a blocking seat (1201) fixed at the material outlet of the collecting hopper (9), slots opened at the top of the blocking seat (1201) are each plugged with a plug plate (1202), a transverse plate (1203) is fixed on the top of the two plug plates (1202), an electric push rod (1204) is fixed on the top of one of the fixing frames (8), and the ejection end of the electric push rod (1204) is fixedly connected to the bottom of the transverse plate (1203).

5. The sand blowing mechanism of a molding machine according to claim 4, characterized in that: Guide rods (1205) are disposed inside the two through holes opened at the top of the transverse plate (1203), and the bottom ends of the guide rods (1205) are fixedly connected to one of the fixing frames (8).

6. The sand blowing mechanism of a molding machine according to claim 1, characterized in that: Transmission wheels (13) are fixed on the surfaces of the two rotating shafts (10), and the two transmission wheels (13) are connected by a belt (14).

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