Casting sand core forming device for casting mold

Abstract

The utility model relates to the field of casting sand cores, in particular to a casting sand core forming device for a casting mold, which is characterized in that a placing groove is arranged in a base, a mold groove is arranged in a bottom mold, the bottom mold is positioned in the placing groove, a through hole is arranged in the middle of the placing groove, a bottom rod penetrating through the through hole is arranged at the lower end of the bottom mold, and a through hole is formed in the bottom rod. A fixed seat is fixedly arranged below the base, a screw rod is rotatably arranged on the fixed seat, the screw rod is inserted into a bottom rod, and the screw rod is in threaded connection with the bottom rod, when the bottom mold needs to be replaced, a rocker is rotated, the bottom rod can drive the bottom mold to ascend in a placing groove under the action of a threaded structure, and when the bottom rod is completely separated from the screw rod, the bottom mold can be replaced. And a pulling force is provided for the bottom die, so that the bottom die can be taken out from the placing groove, and the bottom die is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the field of casting sand cores, in particular to a casting sand core forming device for a casting mould. Background Art

[0002] As we all know, sand core is the material used to make core in casting production, which is composed of casting sand, sand binder, etc. The material used to make core in casting production is generally mixed with casting sand, sand binder and auxiliary materials in a certain proportion. Most of the core is surrounded by high-temperature liquid metal in the mold, and the size of the supporting and positioning part is generally small. Therefore, in addition to the performance of general molding sand, the core sand is also required to have higher strength, air permeability, yield and collapsibility. Core sand is divided into clay core sand, water glass core sand, oil core sand, synthetic core sand, resin core sand, etc. according to the different binders used. Cores with simple shapes can generally be made of clay core sand; cores with complex shapes, thin and fine cross-sections, high dry strength and good collapsibility are required. Oil core sand, synthetic core sand or resin core sand. Vegetable oil sand cores can obtain very smooth castings, but the tung oil, linseed oil, modified rice bran oil, etc. used are scarce and expensive.

[0003] At present, the existing casting sand core forming device for casting mold can only process a single model when working, and cannot effectively process different models, thereby greatly reducing the practicality of the casting mold. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a casting sand core forming device for a casting mold.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a casting sand core forming device for a casting mold, comprising a bottom mold and a base, a placement groove is provided inside the base, a mold groove is provided inside the bottom mold, the bottom mold is located inside the placement groove, a through hole is provided in the middle part of the placement groove, a bottom rod passing through the through hole is provided at the lower end of the bottom mold, a fixing seat is fixedly provided below the base, a screw is rotatably provided on the fixing seat, the screw is inserted into the interior of the bottom rod, and the screw is threadedly connected to the bottom rod, and a rocker is provided at the bottom end of the screw.

[0008] In order to improve the stability of the rocker when in use, the utility model is improved in that a limiting rod penetrating the rocker is provided on the fixing seat.

[0009] In order to facilitate the assembly of the fixing seat, the improvement of the utility model is that a support rod is fixedly arranged at the lower end of the base, and the two ends of the fixing seat are fixed to the bottom of the support rod by bolts.

[0010] In order to make the bottom mold more firmly in the placement groove, the improvement of the utility model is that the bottom mold is provided with a clamping groove on both sides, the inner wall of the placement groove is provided with a cavity, the interior of the cavity is provided with a spring, and one end of the spring is provided with a clamping block that cooperates with the clamping groove.

[0011] Furthermore, the present invention is improved in that the card slot and the card block are both arc-shaped structures.

[0012] Furthermore, the utility model has the following improvements: a groove is provided at the bottom of the placement slot, an electromagnet is provided inside the groove, and a switch located at the lower end of the base is provided at the lower end of the electromagnet.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a casting sand core forming device for a casting mold, which has the following beneficial effects:

[0015] The casting sand core forming device for the casting mold, when the bottom mold needs to be replaced, the rocker is rotated, and the bottom rod drives the bottom mold to rise in the placement groove through the action of the threaded structure. When the bottom rod is completely separated from the screw rod, a pulling force is provided to the bottom mold, and the bottom mold can be taken out of the placement groove, so that the bottom mold can be easily replaced, thereby effectively processing different models, and reducing the limitations of the structure when used;

[0016] The spring can provide an elastic force to the clamping block, and through the cooperation between the clamping block and the clamping slot, a limiting structure can be provided for the bottom mold in the placement slot, so that the bottom mold can be installed more firmly in the placement slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 ;

[0020] Figure 4 This is a schematic diagram of the installation structure of the card block in the utility model;

[0021] In the figure: 1. bottom mold; 2. mold groove; 3. base; 4. placement groove; 5. through hole; 6. bottom rod; 7. fixing seat; 8. screw rod; 9. rocker; 10. limit rod; 11. switch; 12. groove; 13. electromagnet; 14. support rod; 15. slot; 16. block. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 , a casting sand core forming device for a casting mold, comprising a bottom mold 1 and a base 3, wherein a placement groove 4 is provided inside the base 3, a mold groove 2 is provided inside the bottom mold 1, the bottom mold 1 is located inside the placement groove 4, a through hole 5 is provided in the middle part of the placement groove 4, a bottom rod 6 penetrating the through hole 5 is provided at the lower end of the bottom mold 1, a fixing seat 7 is fixedly provided below the base 3, a screw 8 is rotatably provided on the fixing seat 7, the screw 8 is inserted into the inside of the bottom rod 6, and the screw 8 is threadedly connected with the bottom rod 6, a rocker 9 is provided at the bottom end of the screw 8, when this structure is used, it is necessary to match a designated top mold, the so-called top mold, that is, the mold covering the bottom mold 1, here it is not necessary to make too many molds for it, the screw 8 can be positioned by the fixing seat 7, the fixing seat 7 is rotated, the screw 8 can be rotated in the bottom rod 6, the bottom rod 6 can drive the bottom mold 1 to descend in the placement groove 4, when the bottom end of the bottom mold 1 contacts the bottom of the placement groove 4, the bottom mold 1 will be fixed inside the placement groove 4;

[0024] When the bottom mold 1 needs to be replaced, the rocker 9 is turned, and the bottom rod 6 can drive the bottom mold 1 to rise in the placement groove 4 through the action of the threaded structure. When the bottom rod 6 is completely separated from the screw rod 8, a pulling force is provided to the bottom mold 1, so that the bottom mold 1 can be taken out of the placement groove 4, which makes it easy to replace the bottom mold 1, thereby effectively processing different models and reducing the limitations of this structure during use.

[0025] The rocker 9 lacks a limiting structure below the base 3, which will affect the stability of the rocker 9 when in use. The fixing seat 7 is provided with a limiting rod 10 that passes through the rocker 9, which can provide a limiting structure for the rocker 9 below the base 3 and improve the stability of the rocker 9 when in use.

[0026] Furthermore, a support rod 14 is fixedly provided at the lower end of the base 3, and both ends of the fixing seat 7 are fixed to the bottom of the support rod 14 by bolts. The bolt fixing method can facilitate the assembly of the fixing seat 7.

[0027] The bottom mold 1 lacks a limiting structure in the placement groove 4, which makes the bottom mold 1 not firmly installed in the placement groove 4. The bottom mold 1 is provided with a clamping groove 15 on both sides, and a cavity is provided on the inner wall of the placement groove 4. A spring is provided inside the cavity, and one end of the spring is provided with a clamping block 16 that cooperates with the clamping groove 15. The clamping groove 15 and the clamping block 16 are both arc-shaped structures. The spring can provide an elastic force to the clamping block 16. Through the cooperation of the clamping block 16 and the clamping groove 15, a limiting structure can be provided to the bottom mold 1 in the placement groove 4, which can make the bottom mold 1 installed more firmly in the placement groove 4. Since the clamping groove 15 and the clamping block 16 are both arc-shaped structures, the bottom mold 1 can be easy to assemble.

[0028] Furthermore, a groove 12 is provided at the bottom of the placement groove 4, and an electromagnet 13 is provided inside the groove 12. The lower end of the electromagnet 13 is provided with a switch 11 located at the lower end of the base 3. When the bottom mold 1 is installed, the electromagnet 13 is energized by controlling the switch 11. At this time, the electromagnet 13 can provide a suction force to the bottom mold 1, so that the bottom mold 1 can be installed more firmly in the placement groove 4. When the bottom mold 1 needs to be replaced, the electromagnet 13 can be powered off. The electromagnet 13 is very common nowadays, and there is no need to make too much description about it here.

[0029] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] 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 casting sand core forming device for a casting mold, comprising a bottom mold (1) and a base (3), characterized in that: The base (3) is provided with a placement groove (4) inside, the bottom mold (1) is provided with a mold groove (2) inside, the bottom mold (1) is located inside the placement groove (4), a through hole (5) is provided in the middle part of the placement groove (4), a bottom rod (6) penetrating the through hole (5) is provided at the lower end of the bottom mold (1), a fixing seat (7) is fixedly provided below the base (3), a screw rod (8) is rotatably provided on the fixing seat (7), the screw rod (8) is inserted into the inside of the bottom rod (6), and the screw rod (8) is threadedly connected to the bottom rod (6), and a rocker (9) is provided at the bottom end of the screw rod (8).

2. The casting sand core forming device for a casting mold according to claim 1, characterized in that: The fixing seat (7) is provided with a limiting rod (10) penetrating the rocker (9).

3. A casting sand core forming device for a casting mold according to claim 2, characterized in that: A support rod (14) is fixedly arranged at the lower end of the base (3), and two ends of the fixing seat (7) are fixed to the bottom of the support rod (14) by means of bolts.

4. The casting sand core forming device for a casting mold according to claim 3, characterized in that: The bottom mold (1) is provided with a clamping groove (15) on both sides, the inner wall of the placement groove (4) is provided with a cavity, a spring is provided inside the cavity, and a clamping block (16) matching the clamping groove (15) is provided at one end of the spring.

5. The casting sand core forming device for a casting mold according to claim 4, characterized in that: The clamping slot (15) and the clamping block (16) are both arc-shaped structures.

6. A casting sand core forming device for a casting mold according to claim 5, characterized in that: A groove (12) is provided at the bottom of the placement slot (4), an electromagnet (13) is provided inside the groove (12), and a switch (11) located at the lower end of the base (3) is provided at the lower end of the electromagnet (13).

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