Casting sand core box

Abstract

The utility model discloses a sand core box for casting, which comprises an upper core box and a lower core box, both sides of the lower end face of the upper core box are fixedly provided with clamping blocks, both sides of the upper core box are fixedly provided with fixed convex blocks, both sides of the interior of the lower core box are provided with clamping grooves, the two clamping blocks are clamped in the two clamping grooves, and the two clamping blocks are clamped in the two clamping grooves. Limiting grooves located in the lower core box are formed in the lower end faces of the two clamping grooves, guide rods are arranged in the limiting grooves, pressing blocks are arranged on one sides of the interiors of the clamping grooves, connecting blocks are fixedly arranged on one sides of the pressing blocks, movable plates are arranged on one sides of the connecting blocks, and movable shafts are movably connected between the movable plates and the connecting blocks; a through hole groove is formed in the movable plate, the fixed protruding block and the movable plate are connected in a penetrating mode through the through hole groove, and a guide block arranged outside the guide rod in a sleeving mode is fixedly arranged on the lower end face of the pressing block. According to the utility model, the reinforcing structure is arranged between the upper core box and the lower core box, so that the overall use efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand core boxes for casting, in particular to a sand core box for casting. Background Art

[0002] A sand core box is an auxiliary tool used in the casting process to create cavities and holes inside castings. During casting, the sand core box is placed in the mold, molten metal is poured, and after the metal solidifies, the sand core box is removed to obtain a casting with a through hole or cavity.

[0003] Among them, the existing technology patent CN201120348176.8 is a sand core box, which, by setting a sand retaining block in the sand core box, guides the sand flow into the groove of the sand core box, thereby ensuring the quality of the sand core corresponding to the groove, and further ensuring the quality of the casting workpiece. In addition, the sand retaining block will not affect the quality of the sand core, which solves the problem that when there is a clear groove in the sand core box, the sand flow has a certain speed. When there is a groove on the sand flow channel, the sand flow usually cannot fully fill the groove, or the sand core part corresponding to the groove often cannot maintain the required shape due to loose sand particles. When using this sand core to make castings, it will naturally cause casting defects, thereby affecting product quality. However, existing sand core boxes of this type are all connected and installed through mortise and tenon structures, and the fixing effect of the upper and lower boxes is not strengthened, resulting in poor fixation. Therefore, it does not meet existing needs. In response to this, we propose a sand core box for casting. Utility Model Content

[0004] The purpose of the utility model is to provide a sand core box for casting, so as to solve the problems raised in the above background technology that the existing sand core boxes of this type are connected and installed by mortise and tenon structures, the fixing effect of the upper and lower boxes is not strengthened, and the fixation is poor.

[0005] The lockhole that is formed on the two ends of two chute is formed, and the lockhole that is formed on the two ends of two chute is formed.

[0006] Preferably, the upper core box and the lower core box are both provided with sand core cavities, and the upper core box is clamped in by aligning the clamping blocks on both sides of the lower end surface with the clamping grooves on both sides of the lower core box.

[0007] Sand blocking blocks are fixedly provided on both sides of the upper core box, and the two clamping blocks will squeeze the pressing block on one side of the inner portion of the clamping slot toward one side, and during the squeezing, the pressing block will move toward one side.

[0008] A through hole located inside the lower core box is opened on one side of the slot, and the connecting block is connected to the lower core box through the through hole. The guide block on the outside of the guide rod is sleeved on the lower end surface of the pressing block for sliding. When the connecting block passes through the through hole on one side of the slot,

[0009] The upper end surface of the sand core cavity is provided with an entrance located inside the upper core box. The movable plate is folded toward one end by the movable shaft, so that the movable plate is folded to one side under the drive of the movable shaft.

[0010] The surface of the movable plate is provided with anti-skid protrusions, and the fixed protrusion on one side of the upper core box can be connected and fixed through the through hole groove provided in the interior of the movable plate.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model locks the upper core box by aligning the clamping blocks on both sides of the lower end surface of the upper core box with the clamping grooves on both sides of the lower core box. After the clamping is completed, the two clamping blocks will squeeze the pressure block on one side of the inner side of the clamping groove to one side. During the squeezing, the pressure block will move to one side and slide through the guide block provided on the outer side of the guide rod through the lower end surface of the pressure block. When the connecting block passes through the through hole on one side of the clamping groove, the movable plate is folded by one end of the movable shaft, so that the movable plate is folded to one side under the drive of the movable shaft. At this time, the fixed protrusion on one side of the upper core box will pass through the through hole groove opened in the movable plate to connect and be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the partial structure of the utility model as a whole;

[0014] Figure 2 This is a partial enlarged structural diagram of the connection A of the utility model;

[0015] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0016] In the figure: 1. Upper core box; 2. Lower core box; 3. Sand blocking block; 4. Sand core cavity; 5. Clamping block; 6. Clamping slot; 7. Guide rod; 8. Guide block; 9. Spring; 10. Movable plate; 11. Movable shaft; 12. Pressing block; 13. Limiting slot; 14. Fixing protrusion; 15. Through-hole slot; 16. Connecting block. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] See also Figures 1 to 3 The present invention provides an embodiment of a sand core box for casting, comprising an upper core box 1 and a lower core box 2. Both sides of the lower end surface of the upper core box 1 are fixed with a clamping block 5, and both sides of the upper core box 1 are fixed with a fixing protrusion 14. Both sides of the interior of the lower core box 2 are provided with a clamping groove 6, and the two clamping blocks 5 are clamped in the two clamping grooves 6. The lower end surfaces of the two clamping grooves 6 are provided with a limiting groove 13 located inside the lower core box 2, and a guide rod 7 is provided inside the limiting groove 13. A pressure block 12 is provided on one side of the interior of the clamping groove 6, and a connecting block 16 is fixed on one side of the pressure block 12. A movable plate 10 is provided on one side of the connecting block 16. A movable shaft 11 is movably connected between the movable plate 10 and the connecting block 16. A through-hole groove 15 is provided inside the movable plate 10, and the fixing protrusion 14 is connected with the movable plate 10 through the through-hole groove 15. The lower end surface of the pressure block 12 is fixed with a guide block 8 sleeved on the outside of the guide rod 7. A spring 9 sleeved on the outside of the guide rod 7 is provided on one side of the guide block 8.

[0019] The upper core box 1 and the lower core box 2 are both provided with sand core cavities 4. The upper core box 1 is clamped in place by aligning the clamping blocks 5 on both sides of the lower end surface with the clamping grooves 6 on both sides of the lower core box 2.

[0020] Sand blocks 3 are fixedly provided on both sides of the upper core box 1 , and the two clamping blocks 5 will squeeze the pressing block 12 on one side of the clamping slot 6 toward one side, and during the squeezing, the pressing block 12 will move toward one side.

[0021] A through hole is opened on one side of the card slot 6 and is located inside the lower core box 2. The connecting block 16 is connected to the lower core box 2 through the through hole. The guide block 8 is sleeved on the lower end surface of the pressure block 12 and is slid on the outside of the guide rod 7. When the connecting block 16 passes through the through hole on one side of the card slot 6,

[0022] The upper end surface of the sand core cavity 4 is provided with an entrance inside the upper core box 1 , and the movable plate 10 is folded toward one end by the movable shaft 11 , so that the movable plate 10 is folded toward one side driven by the movable shaft 11 .

[0023] The surface of the movable plate 10 is provided with anti-slip bumps, and the fixing bumps 14 on one side of the upper core box 1 can be connected and fixed through the through-hole grooves 15 provided inside the movable plate 10 .

[0024] To sum up, when the sand core box is in use, the blocks 5 on both sides of the lower end surface of the upper core box 1 are aligned with the card slots 6 on both sides of the lower core box 2 to clamp it. After the clamping is completed, the two blocks 5 will squeeze the pressure block 12 on one side of the inner side of the card slot 6 to one side. During the squeezing, the pressure block 12 will move to one side, and the guide block 8 on the outside of the guide rod 7 is sleeved on the lower end surface of the pressure block 12 for sliding. When the connecting block 16 passes through the through hole on one side of the card slot 6, the movable plate 10 is folded to one end through the movable shaft 11, so that the movable plate 10 is folded to one side under the drive of the movable shaft 11. At this time, the fixed protrusion 14 on one side of the upper core box 1 will pass through the through hole groove 15 opened inside the movable plate 10 to connect and be fixed.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A sand core box for casting, comprising an upper core box (1) and a lower core box (2), characterized in that: Both sides of the lower end surface of the upper core box (1) are fixed with clamping blocks (5), both sides of the upper core box (1) are fixed with fixed protrusions (14), both sides of the interior of the lower core box (2) are provided with clamping grooves (6), the two clamping blocks (5) are clamped into the two clamping grooves (6), the lower end surfaces of the two clamping grooves (6) are provided with limiting grooves (13) located inside the lower core box (2), the interior of the limiting groove (13) is provided with a guide rod (7), one side of the interior of the clamping groove (6) is provided with a pressing block (12), and one side of the pressing block (12) is fixed. A connecting block (16) is provided, a movable plate (10) is provided on one side of the connecting block (16), a movable shaft (11) is movably connected between the movable plate (10) and the connecting block (16), a through hole groove (15) is provided inside the movable plate (10), the fixed protrusion (14) and the movable plate (10) are connected through the through hole groove (15), the lower end surface of the pressing block (12) is fixedly provided with a guide block (8) sleeved on the outside of the guide rod (7), and a spring (9) sleeved on the outside of the guide rod (7) is provided on one side of the guide block (8).

2. A casting sand core box according to claim 1, characterized in that: Sand core cavities (4) are provided inside the upper core box (1) and the lower core box (2).

3. A casting sand core box according to claim 1, characterized in that: Sand blocking blocks (3) are fixedly provided on both sides of the interior of the upper core box (1).

4. A casting sand core box according to claim 1, characterized in that: A through hole located inside the lower core box (2) is provided on one side of the clamping slot (6), and the connecting block (16) is connected to the lower core box (2) through the through hole.

5. The casting sand core box according to claim 2, characterized in that: The upper end surface of the sand core cavity (4) is provided with an entrance located inside the upper core box (1).

6. A casting sand core box according to claim 1, characterized in that: The surface of the movable plate (10) is provided with anti-slip bumps.

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