Sand box for sand casting of machine tool parts

Abstract

The utility model belongs to the technical field of casting equipment, and particularly relates to a sand box for sand casting of machine tool parts, which comprises an upper sand box and a lower sand box, lower box lugs are arranged on the two sides of the top of the lower sand box; the fixing pins are inserted into the upper box lug and the lower box lug on the left side; the locking piece is arranged on the right side of the lower sand box; the positioning notches are formed in the lower surfaces of the upper box lugs; the positioning bulge is arranged on the upper surface of the lower box lug; the positioning frame is arranged on the lower surface of the upper sand box, and the bottom end of the positioning frame is conical; the positioning groove is formed in the upper surface of the lower sand box; wherein the positioning notch can be matched with the positioning protrusion, the outline of the positioning frame is the same as the outline of the cope flask in shape, the positioning frame can be completely inserted into the positioning groove and matched with the positioning groove, and compared with the prior art, the work efficiency and the finished product quality of castings are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting equipment, in particular to a sand box for sand casting of machine tool parts. Background Art

[0002] The sand box for sand casting is a tool for making sand molds. It plays the role of filling and fixing mortar into a specific shape during the sand casting process. It is an important tool for achieving accurate shape and stable size during the sand casting process. It is widely used in the casting industry. For example, a sand casting device disclosed in the patent with application number CN201120111831.8 includes an upper sand box, a lower sand box and a sandwich template. The sandwich template is sandwiched between the upper sand box and the lower sand box. A mold cavity is formed between the upper sand box and the lower sand box. A supporting plate is provided at the bottom of the lower sand box. Lugs with sleeve holes are provided on opposite sides of the upper sand box and the lower sand box. Template holes corresponding to the sleeve holes are provided on the sandwich template. The sand casting device also includes a guide column, which passes through the sleeve hole and the template hole to connect the upper sand box and the lower sand box;

[0003] During the use of this existing sand box, the alignment and positioning when closing the box need to be adjusted manually, which has low precision and low efficiency, is time-consuming and labor-intensive, and reduces work efficiency. At the same time, the sealing effect of the joints of the sand box is poor, and sand leakage is easy to occur during the filling and vibration process, resulting in inaccurate sand mold shape and reduced quality of the finished casting, so it is necessary to make improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a sand box for sand casting of machine tool parts in order to improve the working efficiency and the quality of finished castings in view of the above-mentioned existing technical problems.

[0005] In view of this, the utility model provides a sand box for sand casting of machine tool parts, comprising:

[0006] An upper flask, wherein upper flask ears are arranged on both sides of the bottom of the upper flask;

[0007] A lower sand box, wherein lower box ears are arranged on both sides of the top of the lower sand box;

[0008] A fixing pin, the fixing pin being inserted into the upper box ear and the lower box ear on the left side;

[0009] A locking piece, wherein the locking piece is arranged on the right side of the lower sand box;

[0010] Also includes:

[0011] A positioning notch, the positioning notch being arranged on the lower surface of the upper box ear;

[0012] A positioning protrusion, wherein the positioning protrusion is arranged on the upper surface of the lower box ear;

[0013] A positioning frame, the positioning frame is arranged on the lower surface of the upper sand box, and the bottom end of the positioning frame is conical;

[0014] A positioning groove, wherein the positioning groove is arranged on the upper surface of the lower sand box;

[0015] Among them, the positioning notch can cooperate with the positioning protrusion, the contour of the positioning frame is the same as the contour shape of the upper sand box, the size of the positioning frame is larger than the inner size of the upper sand box and smaller than the outer size of the upper sand box, and the positioning frame can be fully inserted into the positioning groove and cooperate with the positioning groove.

[0016] In the present technical scheme, during the process of assembling the sand boxes, the upper sand box is placed on the lower sand box, and the positioning notch on the upper box ear can cooperate with the positioning protrusion on the lower box ear to achieve positioning and alignment, and at the same time, the positioning frame is embedded in the positioning groove, and the contour of the positioning frame is the same as the contour shape of the upper sand box. Therefore, after the positioning frame is embedded in the positioning groove, the upper sand box and the lower sand box can be positioned and aligned in the horizontal direction without manual adjustment, which effectively improves work efficiency. At the same time, the positioning frame can also make the gap between the upper sand box and the lower sand box form a concave-convex change, thereby improving the sealing performance of the gap, preventing sand leakage at the joints of the sand box during filling and vibration, and effectively improving the quality of the finished castings.

[0017] In the above technical solution, further, it also includes:

[0018] A sealing strip is arranged on the inner surface of the positioning frame and extends along the contour of the positioning frame.

[0019] In the above technical solution, further, the sealing strip also includes:

[0020] A sealing body, wherein a plurality of fastening strips are arranged on the outer surface of the sealing body and a cavity is arranged inside the sealing body;

[0021] The wear-resistant body is detachably arranged on the outer end of the sealing body.

[0022] In the above technical solution, further, it also includes:

[0023] A T-shaped card slot, the T-shaped card slot is arranged at the outer end of the sealing body;

[0024] A T-shaped clamping block, the T-shaped clamping block is arranged at the inner end of the wear-resistant body;

[0025] Wherein, the wear-resistant body is detachably arranged on the sealing body through the cooperation between the T-shaped clamping block and the T-shaped clamping groove.

[0026] In the above technical solution, further, it also includes:

[0027] T-shaped reinforcing ribs, which are arranged on the outer surfaces of the upper flask and the lower flask and extend along the contours of the upper flask and the lower flask;

[0028] The reinforcing ribs are arranged on the outer surfaces of the upper sand box and the lower sand box and are symmetrically distributed on both sides of the T-shaped reinforcing ribs.

[0029] The beneficial effects of the utility model are:

[0030] 1. The positioning notch, positioning protrusion, positioning frame and positioning groove can be set to automatically position and align during the closing process, eliminating the need for manual adjustment and effectively improving work efficiency;

[0031] 2. The positioning frame can effectively improve the sealing performance of the sand box gap while improving the positioning and alignment effects, preventing sand leakage at the joints of the sand box during filling and vibration, and effectively improving the quality of the finished castings;

[0032] 3. The setting of T-shaped reinforcement ribs can effectively improve the structural strength of the sand box, prevent the sand box from deformation due to vibration, pressure, temperature and other factors during the filling and metallurgical process, and further improve the quality of the finished castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 It is a schematic structural diagram of a specific implementation method of the utility model.

[0035] Figure 2 It is a schematic diagram of the exploded structure of the upper sand box and the lower sand box of the utility model.

[0036] Figure 3 For this utility model Figure 2 Schematic diagram of the main view structure.

[0037] Figure 4 For this utility model Figure 3 Schematic diagram of the cross-sectional view structure.

[0038] Figure 5 For this utility model Figure 4 Schematic diagram of the structure of the partial enlarged view of part A in the middle.

[0039] The symbols in the figure are:

[0040] 1. Upper sand box; 100. Upper box ear; 2. Lower sand box; 200. Lower box ear; 3. Fixing pin; 4. Locking piece; 5. Positioning notch; 6. Positioning protrusion; 7. Positioning frame; 8. Positioning groove; 9. Sealing strip; 90. Sealing body; 91. Fastening strip; 92. Cavity; 93. Wear-resistant body; 94. T-shaped slot; 95. T-shaped block; 10. T-shaped reinforcing rib; 11. Reinforcing rib. DETAILED DESCRIPTION

[0041] 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 of 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.

[0042] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] Embodiment 1:

[0044] The embodiment of the present application provides a sand box for sand casting of machine tool parts, comprising: an upper sand box 1, upper box ears 100 are arranged on both sides of the bottom of the upper sand box 1; a lower sand box 2, lower box ears 200 are arranged on both sides of the top of the lower sand box 2; a fixing pin 3, the fixing pin 3 is inserted into the upper box ear 100 and the lower box ear 200 on the left side; a locking member 4, the locking member 4 is arranged on the right side of the lower sand box 2;

[0045] It also includes: a positioning notch 5, which is arranged on the lower surface of the upper box ear 100; a positioning protrusion 6, which is arranged on the upper surface of the lower box ear 200; a positioning frame 7, which is arranged on the lower surface of the upper sand box 1, and the bottom end of the positioning frame 7 is conical; a positioning groove 8, which is arranged on the upper surface of the lower sand box 2;

[0046] Among them, the positioning notch 5 can cooperate with the positioning protrusion 6, the contour of the positioning frame 7 is the same as the contour shape of the upper sand box 1, the size of the positioning frame 7 is larger than the inner size of the upper sand box 1, and smaller than the outer size of the upper sand box 1. The positioning frame 7 can be fully inserted into the positioning groove 8 and cooperate with the positioning groove 8.

[0047] In this embodiment, during the sand box assembly process, the upper sand box 1 is placed on the lower sand box 2, and the positioning notch 5 on the upper box ear 100 can cooperate with the positioning protrusion 6 on the lower box ear 200 to achieve positioning and alignment. At the same time, the positioning frame 7 is embedded in the positioning groove 8, and the contour of the positioning frame 7 is the same as the contour shape of the upper sand box 1. Therefore, after the positioning frame 7 is embedded in the positioning groove 8, the upper sand box 1 and the lower sand box 2 can be positioned and aligned in the horizontal direction without manual adjustment, which effectively improves the work efficiency. At the same time, the positioning frame 7 can also make the gap between the upper sand box 1 and the lower sand form a concave-convex change, thereby improving the sealing performance of the gap, preventing sand leakage at the joints of the sand box during filling and vibration, and effectively improving the quality of the finished castings.

[0048] Embodiment 2:

[0049] This embodiment provides a sand box for sand casting of machine tool parts. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features, including: a sealing strip 9, which is arranged on the inner surface of the positioning frame 7 and extends along the contour of the positioning frame 7.

[0050] The sealing strip 9 further comprises: a sealing body 90 , the outer surface of which is provided with a plurality of fastening strips 91 , the interior of which is provided with a cavity 92 ; and a wear-resistant body 93 , which is detachably provided at the outer end of the sealing body 90 .

[0051] The seal body 90 further includes: a T-shaped card slot 94, which is disposed at the outer end of the seal body 90; a T-shaped card block 95, which is disposed at the inner end of the wear-resistant body 93;

[0052] The wear-resistant body 93 is detachably arranged on the sealing body 90 through the cooperation between the T-shaped clamping block 95 and the T-shaped clamping groove 94 .

[0053] In this embodiment, the positioning frame 7 can make the gap between the upper sand box 1 and the lower sand box form a concave-convex change, thereby improving the sealing performance of the gap. The gap between the upper sand box 1 and the lower sand box 2 can be further closed by setting the sealing strip 9, thereby preventing the sand leakage at the joint of the sand box during the filling and vibration process, effectively improving the finished product quality of the casting. At the same time, the several fastening strips 91 on the sealing body 90 of the sealing strip 9 can improve the matching stability between the sealing strip 9 and the positioning frame 7, and prevent the sealing strip 9 from falling off. The detachable wear-resistant body 93 can effectively improve the wear resistance of the sealing strip 9, prevent the sealing strip 9 from being excessively worn, and facilitate the replacement and maintenance of the sealing surface of the sealing strip 9, further improving work efficiency.

[0054] Embodiment 3:

[0055] The present embodiment provides a sand box for sand casting of machine tool parts. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features, including: T-shaped reinforcement ribs 10, which are arranged on the outer surfaces of the upper sand box 1 and the lower sand box 2 and extend along the contours of the upper sand box 1 and the lower sand box 2; reinforcement ribs 11, which are arranged on the outer surfaces of the upper sand box 1 and the lower sand box 2 and are symmetrically distributed on both sides of the T-shaped reinforcement ribs 10.

[0056] The web of the T-shaped stiffener 10 is fixedly connected to the outer surfaces of the cope flask 1 and the drag flask 2 .

[0057] In this embodiment, the provision of the T-shaped reinforcement ribs 10 can effectively improve the structural strength of the sand box, prevent the sand box from being deformed due to factors such as vibration, pressure and temperature during the filling and metallurgical processes, and further improve the quality of the finished casting.

[0058] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A sand box for sand casting of machine tool parts, comprising: An upper sand box (1), wherein upper box ears (100) are arranged on both sides of the bottom of the upper sand box (1); A lower sand box (2), wherein lower box ears (200) are arranged on both sides of the top of the lower sand box (2); A fixing pin (3), wherein the fixing pin (3) is inserted into the upper box ear (100) and the lower box ear (200) on the left side; A locking member (4), wherein the locking member (4) is arranged on the right side of the lower sand box (2); It is characterized by further comprising: A positioning notch (5), wherein the positioning notch (5) is arranged on the lower surface of the upper box ear (100); A positioning protrusion (6), wherein the positioning protrusion (6) is arranged on the upper surface of the lower box ear (200); A positioning frame (7), wherein the positioning frame (7) is arranged on the lower surface of the upper sand box (1), and the bottom end of the positioning frame (7) is conical; A positioning groove (8), wherein the positioning groove (8) is arranged on the upper surface of the lower sand box (2); The positioning notch (5) can cooperate with the positioning protrusion (6), the contour of the positioning frame (7) is the same as the contour of the upper sand box (1), the size of the positioning frame (7) is larger than the inner size of the upper sand box (1) and smaller than the outer size of the upper sand box (1), and the positioning frame (7) can be completely inserted into the positioning groove (8) and cooperate with the positioning groove (8).

2. A sand box for sand casting of machine tool parts according to claim 1, characterized in that: Also includes: A sealing strip (9) is arranged on the inner surface of the positioning frame (7) and extends along the contour of the positioning frame (7).

3. A sand box for sand casting of machine tool parts according to claim 2, characterized in that: The sealing strip (9) further comprises: A sealing body (90), wherein a plurality of fastening strips (91) are arranged on the outer surface of the sealing body (90), and a cavity (92) is arranged inside the sealing body (90); A wear-resistant body (93) is detachably arranged on the outer end of the sealing body (90).

4. A sand box for sand casting of machine tool parts according to claim 3, characterized in that: Also includes: A T-shaped card slot (94), wherein the T-shaped card slot (94) is arranged at the outer end of the sealing body (90); A T-shaped clamping block (95), wherein the T-shaped clamping block (95) is arranged at the inner end of the wear-resistant body (93); The wear-resistant body (93) is detachably arranged on the sealing body (90) by means of a T-shaped clamping block (95) and a T-shaped clamping groove (94) cooperating with each other.

5. A sand box for sand casting of machine tool parts according to claim 1, characterized in that: Also includes: T-shaped reinforcing ribs (10), the T-shaped reinforcing ribs (10) being arranged on the outer surfaces of the upper flask (1) and the lower flask (2) and extending along the contours of the upper flask (1) and the lower flask (2); The reinforcing ribs (11) are arranged on the outer surfaces of the upper sand box (1) and the lower sand box (2) and are symmetrically distributed on both sides of the T-shaped reinforcing ribs (10).

Images