A production line for self-hardening sand core making

Abstract

The present invention discloses a production line for self-hardening sand core making, which comprises: a conveyor line, a first conveyor line adopts a horizontal transmission mechanism, which includes a roller conveyor, the roller conveyor is used for conveying a molding base plate and a special box for a core box, a first transfer vehicle is provided on one side of the first conveyor line, and a second transfer vehicle is provided on the other side of the first conveyor line; a second conveyor line is arranged in front of the first conveyor line, a cover plate station is provided on the second conveyor line, and a flip mold stripping machine is provided on the second conveyor line; a third conveyor line is arranged in front of the second conveyor line, a surface drying furnace is provided on the third conveyor line, the surface drying furnace can dry the moisture of the sand core, and the third conveyor line is provided with a coring station, a cover plate machine, and a base plate storage machine, so as to ensure the precision of the self-hardening sand core, the core box is placed in the special box for the core box, and moves smoothly on the first and second conveyor lines under the support of the molding base plate, and is automatically demolded in the flip mold stripping machine, with high precision, no crane lifting is required throughout the process, and no human participation is required.

Description

Technical Field

[0001] The invention relates to the technical field of core making in the foundry industry, in particular to a self-hardening sand core making production line. Background Art

[0002] Sand cores are used in the production of the vast majority of castings in the foundry industry, and most of these cores are made manually. Manual core making with self-hardening sand requires manual assembly of the core box, compacting the sand after filling, transporting the core box, placing it in a hardening area, and then, after hardening to the required hardness, manually opening the core box and removing the core. The core is then placed in a temporary storage area for secondary hardening, and the core box is manually cleaned before repeating the process to produce the next core. This entire process is entirely manual, resulting in high labor intensity, low production efficiency, and a large footprint. To date, no suitable production line has been found to fully address these challenges, necessitating the development of a novel self-hardening sand core production line to meet the core-making needs of the foundry industry. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a production line for self-hardening sand core making, which realizes the automatic transportation of core boxes on the production line, reduces manual participation, reduces labor intensity, reduces the occupied area of ​​the site, and improves production efficiency.

[0004] The present invention also provides a production line for self-hardening sand core making as described above, comprising a sand storage, a single-unit dust collector arranged next to the sand storage, a self-hardening sand mixer arranged below the sand storage, a vibrating table in front of the self-hardening sand mixer, rollers connected to the front and rear of the vibrating table, and the vibrating table and the front and rear connected rollers forming a first conveying line. The conveying line can adopt horizontal conveying mechanisms such as conveyor belts and motorized rollers.

[0005] According to a production line for self-hardening sand core making provided by the present invention, the conveyor lines are arranged in three rows, transfer vehicles are provided at both ends of the three rows of conveyor lines, and a flip demolding machine is provided in the second conveyor line.

[0006] According to a production line for self-hardening sand core making provided by the present invention, a surface drying furnace is provided in the third conveyor line, a sand core offline station is provided after the surface drying furnace, and a cover plate machine and a bottom plate storage machine are also provided in the third conveyor line.

[0007] According to a production line for self-hardening sand core making provided by the present invention, a molding base plate runs on the first conveyor line, and a special box for core boxes is placed on the molding base plate; a molding base plate runs on the second conveyor line, and a special box for core boxes is placed on the molding base plate, and a sand core transfer base plate is placed above the special box for core boxes; a sand core transfer base plate runs on the third conveyor line, and sand cores are placed on the sand core transfer base plate.

[0008] According to a production line for self-hardening sand core making provided by the present invention, the cover machine grabs the sand core transfer bottom plate from the third conveyor line to the second conveyor line and places it above the core box special box.

[0009] According to a production line for self-hardening sand core making provided by the present invention, the base plate storage machine grabs the excess sand core transfer base plate from the third conveyor line and temporarily stores it in the base plate storage machine, and when needed in subsequent production, the sand core transfer base plate is placed on the third conveyor line for use in the production line.

[0010] Beneficial effects

[0011] Compared with the prior art, the production line for self-hardening sand core making of the present invention ensures the precision of self-hardening sand cores. The core box is placed in a dedicated core box box and moves smoothly on the first and second conveyor lines under the support of the molding base plate. The mold is automatically removed in the flip mold removal machine with high precision. No crane or manual labor is required throughout the process. The production line can ensure the batch precision requirements of large quantities of sand cores.

[0012] Improved the core making speed. During the production of sand cores, there is no need for cranes to transport them. The whole process is automatically operated on the conveyor line. Human workers are only involved in filling sand and opening core boxes, which greatly improves the core making speed.

[0013] Reduced labor intensity for workers. In the traditional core making process, the core boxes need to be moved manually by crane. Since the available area in front of the self-hardening sand mixer is very small, this results in a lot of manual lifting work. The sand core production line uses a conveyor line for transportation, directly replacing this part of the workers' labor.

[0014] Reduced workshop floor space. Due to the use of special core box boxes, large core boxes can be packed with two pieces each, while small core boxes can be packed with four or more pieces each. This greatly reduces the production area occupied by the core boxes and makes more efficient use of the workshop's production space.

[0015] It is compatible with the simultaneous production of sand cores of various specifications. Due to the use of a special core box, multiple core boxes of different specifications and sizes can be placed in one box. Core boxes of different heights and sizes can also be placed in one box. Special-shaped core boxes can also be placed. According to production needs, multiple varieties of sand cores can be produced at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a full line layout diagram of an embodiment of a production line for self-hardening sand core making according to the present invention;

[0018] Figure 2This is an elevation view of sand mixing and molding of an embodiment of a production line for self-hardening sand core making according to the present invention;

[0019] Figure 3 This is an elevational view of a first conveyor line of an embodiment of a production line for self-hardening sand core making according to the present invention;

[0020] Figure 4 This is an elevational view of a second conveyor line of an embodiment of a production line for self-hardening sand core making according to the present invention;

[0021] Figure 5 This is an elevational view of a third conveyor line of an embodiment of a production line for self-hardening sand core making according to the present invention;

[0022] Legend:

[0023] 1. Sand storage; 101. First conveyor line; 102. Second conveyor line; 103. Third conveyor line; 2. Single-unit dust collector; 200. Molding base plate; 201. Core box box; 202. Sand core transfer base plate; 3. Self-hardening sand mixer; 300. Core box; 301. Sand core; 4. Vibrating table; 5. Roller conveyor; 6. Transfer vehicle; 7. Covering station; 8. Turnover and demoulding machine; 9. Transfer vehicle; 10. Surface drying furnace; 11. Coring station; 12. Covering machine; 13. Base plate storage machine. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0025] Example

[0026] Reference Figure 1 、 23. A production line for making self-hardening sand cores according to an embodiment of the present invention is shown in the figure. It includes: a sand storage 1 for storing dry sand before mixing; a single-unit dust collector 2 for absorbing dust generated during sand transportation and molding; a self-hardening sand mixer 3 located below the sand storage 1 for mixing the self-hardening sand for molding; a vibrating table 4 in front of the self-hardening sand mixer 3; and rollers 5 connected to the left and right sides of the vibrating table 4. The vibrating table 4 and rollers 5 form a first conveyor line 101. A first transfer vehicle 6 and a second transfer vehicle 9 are located on both sides of the first conveyor line 101. The first transfer vehicle 6 is responsible for connecting the first conveyor line 101 with the second conveyor line 102, and the second transfer vehicle 9 is responsible for connecting the first conveyor line 101, the second conveyor line 102, and the third conveyor line 103. A molding base plate 200 is placed on the rollers 5 of the first conveyor line 101, and a core box 201 is placed on the molding base plate 200. First, the first conveyor line 101 transfers the molding base plate 200 and the core box 201 above it to the vibrating table 4. The self-setting sand mixed by the self-setting sand mixer 3 is placed into the core boxes 300 within the core box 201. After the sand is placed, the vibrating table 4 activates its vibrating function. Excess loose sand is manually scraped off. The molding base plate 200 and the core box 201 above it are then transferred to the first transfer vehicle 6 and transferred to the second conveyor line 102.

[0027] Reference Figure 4 , an elevation view of the second conveyor line of an embodiment of a production line for self-hardening sand core making according to an embodiment of the present invention. As shown in the figure, it includes a cover plate station 7, and a cover plate machine 12 spanning the second conveyor line 102 and the third conveyor line 103 above the cover plate station 7. The cover plate machine 12 grabs the sand core transfer base plate 202 from the third conveyor line 103 and transfers it to the second conveyor line 102, and covers the sand core transfer base plate 202 on the core box special box 201. The covered core box special box 201 moves forward to the flip mold machine 8 under the support of the molding base plate 200, and completes the flipping, vibration, and demolding actions in the flip mold machine 8. The core box 300 and the sand core 301 are transferred out of the flip mold machine 8 under the support of the sand core transfer base plate 202, and then the core box special box 201 is also transferred out of the flip mold machine 8. The core box 300 is manually disassembled and placed in the dedicated core box box 201, leaving only the sand core 301 on the sand core transfer base plate 202. This completes the autoclave core molding process. The dedicated core box 201, supported by the molding base plate 200, is then transferred by the second transfer vehicle 9 to the first conveyor line 101. The sand core 301, supported by the sand core transfer base plate 202, is then transferred by the second transfer vehicle 9 to the third conveyor line 103.

[0028] Reference Figure 5An elevation view of the third conveyor line of an embodiment of a production line for self-hardening sand core making according to an embodiment of the present invention. As shown in the figure, the sand core 301 enters the surface drying furnace 10 supported by the sand core transfer base plate 202. After drying the sand core 301, it enters the coring station 11. The sand core 301 is manually removed from the third conveyor line 103. The sand core transfer base plate 202 continues to move forward on the third conveyor line 103 and enters the bottom of the cover machine 12. If the production line requires a cover, the cover machine 12 grabs the sand core transfer base plate 202 and transfers it to the second conveyor line 102, where it is placed on the core box 201. If the production line does not need a cover plate temporarily, the core transfer base plate 202 will continue to move forward to the base plate storage machine 13. The base plate storage machine 13 will grab the excess core transfer base plate 202 from the third conveyor line 103 and temporarily store it in the base plate storage machine 13. When the core transfer base plate 202 is needed in subsequent production, it will be placed back on the third conveyor line 103 for use in the production line. The above process is repeated in this cycle to complete the production of self-hardening sand cores.

[0029] Therefore, the core making production line for self-hardening sand of the present invention realizes the automatic operation of self-hardening sand core making on the production line, and has a fast operation speed, a small footprint, high repetition accuracy, and can produce multiple pieces in one box, thereby reducing the labor intensity of workers and improving production efficiency.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A production line for self-hardening sand core making, characterized in that: include: A first conveyor line (101), wherein the first conveyor line (101) adopts a horizontal conveying mechanism and includes a roller conveyor (5), wherein the roller conveyor (5) is used to convey the molding base plate (200) and the core box special box (201), a first transfer vehicle (6) is provided on one side of the first conveyor line (101), and a second transfer vehicle (9) is provided on the other side of the first conveyor line (101); A second conveyor line (102), the second conveyor line (102) being arranged in front of the first conveyor line (101), the second conveyor line (102) being provided with a cover plate station (7), and the second conveyor line (102) being provided with a flip-molding machine (8); a third conveyor line (103), the third conveyor line (103) being located in front of the second conveyor line (102), the third conveyor line (103) being provided with a surface drying furnace (10), the surface drying furnace (10) being capable of drying the moisture of the sand cores (301) as they pass through, the third conveyor line (103) being provided with a coring station (11), a cover plate machine (12), and a bottom plate storage machine (13); A sand storage (1), the sand storage (1) being arranged behind the first conveying line (101), a single-unit dust collector (2) being provided on one side of the sand storage (1), and a self-hardening sand mixer (3) being provided below the sand storage (1); The core box special box (201) is arranged on the upper surface of the molding base plate (200), a sand core transfer base plate (202) can be placed above the core box special box (201), a core box (300) is provided inside the core box special box (201), and the sand core (301) is placed in the core box (300) after demoulding; The surface drying furnace (10) on the third conveyor line (103) surface dries the sand core (301), the coring station (11) manually lifts the sand core to the sand core storage area to complete the core making work, the cover machine (12) places the sand core transfer bottom plate (202) on the core box special box (201) of the second conveyor line (102), and the excess sand core transfer bottom plates (202) are temporarily stored on the bottom plate storage machine (13); The molding base plate (200) runs on the first conveyor line (101) and the second conveyor line (102), and the molding base plate (200) supports the core box special box (201). On the second conveyor line (102), the core box special box (201) in front of the flip demoulding machine (8) is covered with a sand core transfer base plate (202). After demoulding, the sand core transfer base plate (202) supports the sand core 301, and the sand core transfer base plate (202) runs on the second conveyor line (102) and the third conveyor line (103).

2. A production line for self-hardening sand core making according to claim 1, characterized in that: The first conveyor line (101) includes a vibrating table (4) and conveyor lines connected to the front and rear of the vibrating table (4). The molding base plate (200) supports the core box special box (201) and runs on the first conveyor line (101). Sand filling is performed at the vibrating table (4) station. After the sand filling is completed, the vibrating function of the vibrating table (4) is activated to compact the sand mold.

3. A production line for self-hardening sand core making according to claim 1, characterized in that: The second conveying line (102) and the sand core transfer base plate (202) are placed on the cover plate station (7), and the turning and demoulding machine (8) turns over the core box (201) and demoulds it.

4. A production line for self-hardening sand core making according to claim 1, characterized in that: The sand storage (1) behind the first conveyor line (101) is used to store self-hardening sand for molding. The single-unit dust collector (2) arranged next to the sand storage (1) is used to absorb dust generated during sand transportation and molding. The self-hardening sand mixer (3) arranged below the sand storage (1) is used to mix the self-hardening sand for molding.

5. The production line for self-hardening sand core making according to claim 1, characterized in that: The core boxes (300) placed on the core box special box (201) can have different sizes and heights, so that one box can contain multiple pieces.

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