Wear-resistant casting box

Abstract

The utility model discloses a wear-resistant casting box which comprises an upper die, a lower die is arranged at the lower end of the upper die, positioning holes are upwards formed in the four corners of the upper end of the lower die in a penetrating mode, positioning pins are fixedly connected to the four corners of the lower end of the upper die, and the four positioning pins are inserted into the four positioning holes respectively. The upper die and the lower die are mutually positioned and connected through the four positioning holes and the four positioning pins, the lifting handle is designed to facilitate lifting and overturning of the upper die, the operation process is simplified, the tamping function is integrated, through linkage with the tamping pressing plate and the tamping pressing column, casting sand is effectively compacted, filling compactness is ensured, the casting quality is improved, and through the design of the heat dissipation holes, the production efficiency is improved. The elastic telescopic sliding blocks are combined with the balls, friction and abrasion between the positioning pins and the positioning holes in the using process are reduced, the service life of the die is prolonged, the pushing springs provide pre-tightening force, it is ensured that the balls make close contact with the inner walls of the positioning holes, and abrasion is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to casting, and in particular relates to a wear-resistant casting box. Background Art

[0002] In the foundry industry, the casting box is a key equipment for casting forming, and its performance directly affects the accuracy, quality and production efficiency of the casting. During the use of the traditional casting box, the upper and lower molds are not accurately positioned, resulting in large deviations in the size of the castings, affecting the accuracy and consistency of the castings. Insufficient filling and compaction of the casting sand will cause internal pores and defects in the castings, affecting the strength and appearance quality of the castings. The internal heat dissipation of the casting sand is slow, resulting in a long cooling time for the castings, affecting production efficiency, and easily causing local overheating, affecting the quality of the castings. The connection between the upper and lower molds, especially the positioning holes and positioning pins, is severely worn during repeated use, reducing the service life of the casting box and increasing maintenance costs. The traditional casting box has cumbersome operating steps and requires multiple adjustments and corrections, which affects production efficiency and ease of operation. The compaction device is separated from the heat dissipation function, and it is impossible to achieve efficient heat dissipation while compacting, affecting the cooling efficiency of the castings.

[0003] In order to solve the above problems, this patent proposes an innovative casting box design, which aims to improve the casting quality, production efficiency and service life of the casting box by improving the positioning and connection mechanism, integrating compaction and heat dissipation functions, optimizing the wear-resistant structure and ease of operation. Utility Model Content

[0004] The utility model aims to provide a wear-resistant casting box to solve the problems of insufficient filling and compaction of casting sand and serious wear of positioning holes and positioning pins in the traditional casting box mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wear-resistant casting box, comprising an upper mold, a lower mold is arranged at the lower end of the upper mold, positioning holes are penetrated upward inside the four corners of the upper end of the lower mold, positioning pins are fixedly connected to the four corners of the lower end of the upper mold, and the four positioning pins are respectively inserted into the four positioning holes, the upper mold and the lower mold are positioned and connected to each other through the four positioning holes and the four positioning pins, and lifting handles are arranged on the left and right sides of the upper mold and the lower mold.

[0006] Preferably, the left and right sides of the front and rear ends of the upper mold and the lower mold are fixedly connected with limited sliding columns, and the front and rear ends of the upper mold and the lower mold are provided with tamping plates.

[0007] Preferably, the four tamping plates are respectively connected to the upper mold and the lower mold through two limit sliding columns, and are slidably connected to the two limit sliding columns.

[0008] Preferably, a plurality of ramming pressure columns are fixedly connected to both ends of the ramming pressure plate close to the upper die and the lower die, and a plurality of ramming sliding holes are formed inside both ends of the upper die and the lower die close to the ramming pressure plate.

[0009] Preferably, the plurality of ramming pressure columns are respectively inserted into the plurality of ramming sliding holes and are slidably connected to the ramming sliding holes. Heat dissipation holes are formed inside both ends of the plurality of ramming pressure columns away from the upper die and the lower die, and one end of the plurality of heat dissipation holes away from the upper die and the lower die penetrates inside one end of the ramming pressure plate away from the upper die and the lower die.

[0010] Preferably, ramming studs are fixedly connected to both the left and right sides of one end of the ramming pressure plate close to the upper die and the lower die, and the two ramming studs are both threadedly connected inside one end of the lifting handle close to the ramming pressure plate.

[0011] Preferably, telescopic sliding holes are formed inside the lower sides of both the left and right ends of the positioning pin. Telescopic sliding blocks are clamped inside the two telescopic sliding holes, and the two telescopic sliding blocks are respectively slidably connected inside the two telescopic sliding holes.

[0012] Preferably, a spring hole is formed inside one end of the telescopic sliding block close to the central axis of the positioning pin. A pushing spring is arranged inside the spring hole, and the telescopic sliding block is elastically connected inside the telescopic sliding hole through the pushing spring. A ball is rotatably connected inside one end of the telescopic sliding block away from the central axis of the positioning pin.

[0013] Compared with the prior art, the utility model provides a wear-resistant casting box, which has the following beneficial effects:

[0014] 1. Positioning and connection system: The paired design of the positioning hole and the positioning pin is adopted to realize the precise alignment and stable connection of the upper die and the lower die, ensure no gap between the molds, and improve the casting precision.

[0015] 2. Lifting and ramming integrated device: The lifting handle is designed to facilitate the lifting and flipping of the upper die, and simplifies the operation process. The ramming function is integrated. Through the linkage with the ramming pressure plate and the ramming pressure columns, the casting sand is effectively compacted to ensure dense filling and improve the casting quality. The heat dissipation hole design enhances the heat dissipation capacity of the ramming pressure columns, accelerates the cooling of the casting, and improves the production efficiency.

[0016] 3. Wear-resistant positioning pin structure: The combination of the elastic telescopic sliding block and the ball reduces the friction and wear between the positioning pin and the positioning hole during use, and prolongs the service life of the mold. The pushing spring provides a pre-tightening force to ensure that the ball is in close contact with the inner wall of the positioning hole, further reducing wear.

[0017] 4. Adjustable ramming system: The compaction degree is adjustable. By rotating the lifting handle to control the ramming stud, the movement of the ramming pressure plate is realized to adapt to different compaction requirements. Combined with the hexagonal prism lifting handle design, using the reverse thread principle, synchronous adjustment is realized, and the operation is convenient.

[0018] 5. High-efficiency heat dissipation and cooling: Multiple heat dissipation holes enhance the heat exchange between the casting sand and the mold, improve the cooling efficiency and uniformity, shorten the cooling cycle, and enhance the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the casting box of the present utility model.

[0020] Figure 2 It is a schematic diagram of the connection structure of the upper mold of the present utility model.

[0021] Figure 3 It is a schematic diagram of the connection structure of the ramming pressing plate of the present utility model.

[0022] Figure 4 of the present utility model Figure 3 Enlarged schematic diagram at position A.

[0023] In the figure: 1. Upper mold; 2. Lower mold; 3. Positioning hole; 4. Positioning pin; 5. Lifting handle; 6. Limit sliding column; 7. Ramming pressing plate; 8. Ramming pressing column; 9. Ramming sliding hole; 10. Heat dissipation hole; 11. Ramming stud; 12. Telescopic sliding hole; 13. Telescopic sliding block; 14. Spring hole; 15. Pushing spring; 16. Ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] The present utility model provides as Figures 1 - 4A wear-resistant casting box shown in the figure includes an upper mold 1. A lower mold 2 is arranged at the lower end of the upper mold 1. Positioning holes 3 penetrate upward inside the four corners at the upper end of the lower mold 2. Positioning pins 4 are fixedly connected to the four corners at the lower end of the upper mold 1, and the four positioning pins 4 are respectively inserted into the four positioning holes 3. The upper mold 1 and the lower mold 2 are positioned and connected to each other through the four positioning holes 3 and the four positioning pins 4. Lifting handles 5 are arranged on the outer sides of the left and right sides of the upper mold 1 and the lower mold 2. During the casting process, the molding die is placed inside the upper mold 1 and the lower mold 2, and casting sand is filled into the gap between the upper mold 1 and the lower mold 2 and the molding die. And the filled casting sand is tamped to expose the casting hole. Then the molding die is taken out, and the upper mold 1 is lifted and flipped through the lifting handles 5 on both sides. Then the upper mold 1 and the lower mold 2 are positioned and clamped through the four positioning holes 3 and the four positioning pins 4. After clamping, casting is carried out through the casting hole. After the cast product is cooled, the product is demolded, cleaned and polished, and finally the casting is completed. And both the upper mold 1 and the lower mold 2 are made of wear-resistant materials and are more wear-resistant.

[0026] Preferably, limit slide columns 6 are fixedly connected to the left and right sides of the front and rear ends of the upper mold 1 and the lower mold 2. Ramming pressure plates 7 are arranged at the front and rear ends of the upper mold 1 and the lower mold 2. The four ramming pressure plates 7 are respectively connected to the upper mold 1 and the lower mold 2 through two limit slide columns 6 and are slidably connected to the two limit slide columns 6. A plurality of ramming pressure columns 8 are fixedly connected to one end of the ramming pressure plate 7 close to the upper mold 1 and the lower mold 2. A plurality of ramming slide holes 9 are respectively opened inside one end of the upper mold 1 and the lower mold 2 close to the ramming pressure plate 7. The plurality of ramming pressure columns 8 are respectively inserted into the plurality of ramming slide holes 9 and are slidably connected to the ramming slide holes 9. Heat dissipation holes 10 are respectively opened inside one end of the plurality of ramming pressure columns 8 far from the upper mold 1 and the lower mold 2, and one end of the plurality of heat dissipation holes 10 far from the upper mold 1 and the lower mold 2 penetrates inside one end of the ramming pressure plate 7 far from the upper mold 1 and the lower mold 2. Ramming screw columns 11 are fixedly connected to the left and right sides of one end of the ramming pressure plate 7 close to the upper mold 1 and the lower mold 2, and the two ramming screw columns 11 are respectively threadedly connected inside one end of the lifting handle 5 close to the ramming pressure plate 7. After the casting sand inside the upper mold 1 and the lower mold 2 is tamped, since the lifting handles 5 on both sides are arranged in a hexagonal prism shape and the connection threads between the lifting handles 5 and the front and rear two ramming screw columns 11 are arranged in the reverse direction, the lifting handles 5 can be rotated by a wrench, and the two ramming screw columns 11 can be screwed towards or away from one end close to the upper mold 1 and the lower mold 2 at the same time, so that the ramming pressure plates 7 connected to the ramming screw columns 11 can move towards or away from one end close to the upper mold 1 and the lower mold 2. When the ramming pressure plates 7 move towards one end close to the upper mold 1 and the lower mold 2, the plurality of ramming pressure columns 8 slide into the upper mold 1 and the lower mold 2 through the plurality of ramming slide holes 9 and extrude the casting sand inside the upper mold 1 and the lower mold 2, and the casting sand inside the upper mold 1 and the lower mold 2 can be further tamped to ensure that the casting sand can completely fill the gap between the upper mold 1 and the lower mold 2 and the molding die, and improve the production quality of the product.

[0027] Preferably, during the casting process, since the ramming pressure column 8 is inside the upper mold 1 and the lower mold 2, the casting sand can increase the contact area with the upper mold 1 and the lower mold 2 through the multiple ramming pressure columns 8, so that the multiple ramming pressure columns 8 can increase the heat dissipation efficiency of the casting sand, and increase the heat dissipation effect through the multiple heat dissipation holes 10, thereby improving the cooling efficiency and cooling uniformity of the product.

[0028] Preferably, telescopic sliding holes 12 are formed in the lower sides of the left and right ends of the positioning pin 4. Telescopic sliding blocks 13 are clamped in the two telescopic sliding holes 12, and the two telescopic sliding blocks 13 are respectively slidably connected inside the two telescopic sliding holes 12. A spring hole 14 is formed in the end of the telescopic sliding block 13 close to the central axis of the positioning pin 4. A pushing spring 15 is arranged inside the spring hole 14, and the telescopic sliding block 13 is elastically connected inside the telescopic sliding hole 12 through the pushing spring 15. A ball 16 is rotatably connected to the end of the telescopic sliding block 13 far from the central axis of the positioning pin 4. When positioning and clamping the upper mold 1 and the lower mold 2, due to the friction generated during the process of inserting the positioning pin 4 into the positioning hole 3, the positioning hole 3 and the positioning pin 4 will be worn. At this time, since the telescopic sliding block 13 is elastically connected to the lower sides of the left and right ends of the positioning pin 4, and the ball 16 is rotatably connected inside the telescopic sliding block 13 and can roll on the inner wall of the positioning hole 3, the positioning pin 4 can reduce the friction with the inner wall of the positioning hole 3 through the ball 16, thereby reducing the wear of the positioning hole 3 and the positioning pin 4, making the casting box more wear-resistant, and thus improving the service life of the casting box.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wear-resistant casting box, characterized in that, It includes an upper die (1), a lower die (2) is arranged at the lower end of the upper die (1), positioning holes (3) penetrate upward inside the four corners at the upper end of the lower die (2), positioning pins (4) are fixedly connected to the four corners at the lower end of the upper die (1), and the four positioning pins (4) are respectively inserted into the four positioning holes (3). The upper die (1) and the lower die (2) are positioned and connected to each other through the four positioning holes (3) and the four positioning pins (4), and lifting handles (5) are arranged on the outer sides of the left and right sides of the upper die (1) and the lower die (2).

2. The wear-resistant casting box according to claim 1, wherein: Limit slide columns (6) are fixedly connected to the left and right sides of the front and rear ends of the upper die (1) and the lower die (2), and ramming pressing plates (7) are arranged at the front and rear ends of the upper die (1) and the lower die (2).

3. A wear-resistant casting box according to claim 2, characterized in that: The four ramming pressing plates (7) are respectively connected to the upper die (1) and the lower die (2) through two limit slide columns (6) and are slidably connected to the two limit slide columns (6).

4. A wear-resistant casting box according to claim 3, characterized in that: A plurality of ramming pressing columns (8) are fixedly connected to one end of the ramming pressing plate (7) close to the upper die (1) and the lower die (2), and a plurality of ramming sliding holes (9) are opened inside one end of the upper die (1) and the lower die (2) close to the ramming pressing plate (7).

5. A wear-resistant casting box according to claim 4, characterized in that: The plurality of ramming pressing columns (8) are respectively inserted into the plurality of ramming sliding holes (9) and are slidably connected to the ramming sliding holes (9). Heat dissipation holes (10) are opened inside one end of the plurality of ramming pressing columns (8) far from the upper die (1) and the lower die (2), and one end of the plurality of heat dissipation holes (10) far from the upper die (1) and the lower die (2) penetrates inside one end of the ramming pressing plate (7) far from the upper die (1) and the lower die (2).

6. The wear-resistant casting box according to claim 5, wherein: Ramming studs (11) are fixedly connected to the left and right sides of one end of the ramming pressing plate (7) close to the upper die (1) and the lower die (2), and the two ramming studs (11) are both threadedly connected inside one end of the lifting handle (5) close to the ramming pressing plate (7).

7. A wear-resistant casting box according to claim 1, characterized in that: Expansion slide holes (12) are opened inside the lower sides of the left and right ends of the positioning pin (4), expansion sliders (13) are clamped inside the two expansion slide holes (12), and the two expansion sliders (13) are respectively slidably connected inside the two expansion slide holes (12).

8. A wear-resistant casting box according to claim 7, characterized in that: A spring hole (14) is opened inside one end of the expansion slider (13) close to the central axis of the positioning pin (4), a pushing spring (15) is arranged inside the spring hole (14), and the expansion slider (13) is elastically connected inside the expansion slide hole (12) through the pushing spring (15). A ball (16) is rotatably connected inside one end of the expansion slider (13) far from the central axis of the positioning pin (4).

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