Sand box fixture and use method thereof
By designing the Y-shaped sand box clamping tool, using the structure of the rotary fastening arm and pad, the existing clamping tool is solved inconvenient use and damage problems, and efficient and convenient sand box clamping is achieved, protecting the sand core.
Patent Information
- Application Number
- CN202411364437.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-01-03
AI Technical Summary
The existing sand box clamps are inconvenient to use, time-consuming and labor-intensive operation, and are prone to damage the sand type or sand core, and have high processing accuracy and short service life.
A Y-shaped sand box clamp is designed, including a first rotating arm, a second rotating arm and a fastening arm. Clamping is achieved by rotating the fastening arm. A pad is provided at the clamping end to expand the contact surface and avoid local damage. The pad is connected through pin holes to adapt to different surfaces, and the fastening arm is equipped with a handle for easy rotation.
It realizes convenient and quick clamping of the sand box, improves the clamping efficiency, avoids vibration of the sand box and damage to the sand core, and extends the service life of the clamp.
Smart Images
Figure CN119237675A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of casting, and in particular to a fastening device for a sand box. Background Art
[0002] In the field of casting, sand boxes are used to form shapes in the production of castings, or to clamp cores to enhance the core's ability to resist the expansion of molten metal. The box clamps are used to fasten adjacent sand boxes. The box clamps currently used include wedge clamps, swing box clamps and bolt clamps. Among them, the wedge clamps not only have complex manufacturing processes, but also require special structures to be set on the sand box for use; the swing box clamps have high processing precision requirements and short service life; the bolt clamps are time-consuming and laborious to operate during use. Summary of the invention
[0003] In view of the problems that the above clamps are inconvenient to use and cannot be used universally, it is necessary to propose a sand box clamp and a method of using the same to achieve efficient clamping of the sand box and avoid damage to the shape or sand core caused by hitting the wedge iron.
[0004] A sand box clamp comprises a Y-shaped clamp, wherein the Y-shaped clamp comprises a first rotating arm, a second rotating arm and a fastening arm, wherein the first rotating arm is provided with a first clamping end, and the second rotating arm is provided with a second clamping end, the other end of the first rotating arm away from the first clamping end is rotatably connected to the middle part of the second rotating arm, the corner of the first rotating arm close to the first clamping end and the other end of the second rotating arm away from the second clamping end are rotatably connected to the fastening arm respectively, the first clamping end and the second clamping end are arranged opposite to each other, and the clamping effect of the sand box clamp is realized by rotating the fastening arm to clamp the part to be clamped.
[0005] Furthermore, in order to facilitate clamping and to expand the contact surface of clamping to avoid local damage to the clamped part, a cushion block is provided at the first clamping end and the second clamping end, and the cushion block is fixedly connected to the ends of the first clamping end and the second clamping end so that the cushion block directly contacts the clamped part, thereby avoiding damage to the sand box clamp and the clamped part caused by direct contact between the first clamping end and the second clamping end and the clamped part.
[0006] Furthermore, the first clamping end and the second clamping end are provided with pin holes, and the cushion block is rotatably connected to the ends of the first clamping end and the second clamping end through the pin holes. Specifically in this embodiment, the cushion block is a cubic block, and the four surfaces of the cushion block that contact the clamped part can be provided with different textures respectively, so as to be suitable for clamped parts with different surfaces or structures.
[0007] Furthermore, the first rotating arm is provided with a first axial hole and a second axial hole, the first axial hole is arranged at a corner of the first rotating arm close to the first clamping end, and the second axial hole is arranged at the other end away from the first clamping end.
[0008] Furthermore, the second rotating arm is provided with a third axial hole and a fourth axial hole, the third axial hole is arranged in the middle of the second rotating arm and relatively close to the second clamping end; the fourth axial hole is arranged at the other end away from the second clamping end.
[0009] Furthermore, the second axial hole and the third axial hole are connected to each other via a third rotating shaft, so that the first rotating arm is rotatably connected to the second rotating arm.
[0010] Furthermore, a first rotating shaft and a second rotating shaft threadedly connected are fixedly provided at one end of the fastening arm, and the second rotating shaft can move axially along the fastening arm.
[0011] Furthermore, a handle is provided at the other end of the fastening arm away from the first rotating shaft, and the handle can conveniently rotate the fastening arm.
[0012] A method for using a sand box fixture, comprising:
[0013] S01, assembling a matching box, assembling the produced sand mold for forming the casting cavity onto the mold, or assembling the produced sand mold and sand core for forming the casting cavity into a core package, and then setting a sand box on the outside;
[0014] S02, clamping the sand box, clamping the sand box clamp on the edges of two adjacent sand boxes and locking them;
[0015] S03, dismantle, remove the sand box fixture from the sand box, and clean it for reuse.
[0016] The beneficial effects of the technical solution of the present invention are as follows: the clamped parts can be clamped conveniently and quickly, and the efficiency of the sand box clamping is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the Y-type sand box fixture;
[0018] Figure 2 It is a schematic diagram of the short arm structure;
[0019] Figure 3 It is a schematic diagram of the long arm structure;
[0020] Figure 4 is a schematic diagram of the fastening arm structure;
[0021] Among them, 10-first rotating arm; 11-first clamping end; 12-first axial hole; 13-second axial hole; 20-second rotating arm; 21-second clamping end; 22-third axial hole; 23-fourth axial hole; 30-fastening arm; 31-first rotating shaft; 32-second rotating shaft; 33-handle; 40-pad; 50-pin hole; 60-third rotating shaft; 70-pressed part. DETAILED DESCRIPTION
[0022] In order to more clearly illustrate the technical solution of the present invention, the technical solution of the invention content is described in detail in conjunction with the accompanying drawings. Obviously, the following descriptions are some typical embodiments of the present invention. For ordinary technicians in this field, other solutions can be obtained based on these embodiments without paying creative work.
[0023] The invention aims to solve the problem of complicated clamping operation of a casting sand box or complicated clamping structure, and proposes a sand box clamp.
[0024] This embodiment is as Figure 1 , Figure 2 and Figure 3 As shown, it is a sand box which is adjacently mounted on the sand core or the outer periphery of the sand mold during the core clamping equipment process.
[0025] In this embodiment, the overall shape of the sand box clamp is a Y-shaped structure, specifically including a first rotating arm 10, a second rotating arm 20 and a fastening arm 30, wherein the first rotating arm 10 is rotatably connected to the second rotating arm 20, and the fastening arm 30 is rotatably connected to the first rotating arm 10 and the second rotating arm 20. By adjusting the fastening arm 30, the size of the clamping space formed between the first rotating arm 10 and the second rotating arm 20 can be adjusted to achieve clamping of the clamped part 70. Specifically, in this embodiment, the first clamping end 11 of the first rotating arm 10 and the second clamping end 21 of the second rotating arm 20 are used to form the clamping space, and the other end of the first rotating arm 10 away from the first clamping end 11 is rotatably connected to the middle of the second rotating arm 20, so that the sand box clamp of the Y-shaped structure is formed by the shorter first rotating arm 10 and the longer second rotating arm 20, and the fastening arm 30 is used to adjust and fix the first rotating arm 10 and the second rotating arm 20, thereby achieving convenient adjustment and fixation of the sand box clamp.
[0026] As a supplement to this embodiment, the ends of the first clamping end 11 and the second clamping end 21 are both provided with a cushion block 40, and the cushion block 40 is used to expand the contact surface between the first clamping end 11 and the second clamping end 21 and the clamped part 70, which not only increases the clamping force, but also effectively avoids local damage to the contact surface between the first clamping end 11, the second clamping end 21 and the clamped part 70. In this embodiment, the cushion block 40 is a cubic block.
[0027] As a further supplement to the present embodiment, the cubic block-shaped cushion block 40 is rotatably arranged at the ends of the first clamping end 11 and the second clamping end 21. Specifically, a pin hole 50 is arranged at the ends of the first clamping end 11 and the second clamping end 21, and the cushion block 40 is rotatably connected to the ends of the first clamping end 11 and the second clamping end 21 through the pin hole 50. Furthermore, at least two different textures are arranged on the four surfaces that can be released from the clamped part 70, so as to be suitable for the clamped parts 70 with different surfaces, expand the use range of the sand box clamp, increase the friction between the cushion block 40 and the clamped part 70, improve the stability of the clamping force, and avoid the problem of unstable clamping and detachment caused by the smooth surface of the clamped part 70.
[0028] As a supplement to this embodiment, the first rotating arm 10 includes the first clamping end 11 and the first connecting arm, the first clamping end 11 and the first connecting arm are connected at a certain angle, a first axial hole 12 is provided at the corner where the first clamping end 11 and the first connecting arm are connected, and a second axial hole 13 is provided at the other end of the first connecting arm away from the first clamping end 11. Through the angle connection method, the clamping effect of the first clamping end 11 is well realized.
[0029] As a supplement to this embodiment, the second rotating arm 20 includes the second clamping end 21 and the second connecting arm, the second clamping end 21 and the second connecting arm are connected at a certain angle, a third axial hole 22 is provided at a position closer to the corner where the second clamping end 21 and the second connecting arm are connected, and a fourth axial hole 23 is provided at the other end of the second connecting arm away from the second clamping end 21. Through the angle connection method, the clamping effect of the second clamping end 21 is well realized.
[0030] As a further supplement to this embodiment, the second axial hole 13 of the first rotating arm 10 is connected to the third axial hole 22 on the second rotating arm 20 through the third rotating shaft 60, thereby realizing the relative rotation connection of the first rotating arm 10 with respect to the second rotating arm 20, thereby realizing the adjustment of the size of the clamping space.
[0031] As a supplement to the present embodiment, a first rotating shaft 31 and a second rotating shaft 32 are provided on the fastening arm 30, wherein the first rotating shaft 31 is fixedly arranged at one end of the fastening arm 30, and the second rotating shaft 32 is movably arranged on the fastening arm 30, and the second rotating shaft 32 can move axially along the fastening arm 30, and the second rotating shaft 32 can stably stay at any position, and the second rotating shaft 32 and the fastening arm 30 are threadedly connected, and the second rotating shaft 32 can be made to stay at different positions of the fastening arm 30 by rotating the fastening arm 30, so that the size of the clamping space formed between the first clamping end 11 and the second clamping end 21 can be adjusted and fixed, thereby realizing the clamping effect on the sand box.
[0032] As a further supplement to this embodiment, in order to facilitate the rotation of the fastening arm 30 , a handle 33 is provided at the other end away from the first rotating shaft 31 , and the fastening arm 30 can be rotated conveniently and easily through the handle 33 .
[0033] As a further supplement to the present embodiment, a blind hole is provided on the first rotating shaft 31, and a thread is provided in the blind hole, so that the first rotating shaft 31 can be fixedly arranged at the top of one end of the fastening arm 30, and the first rotating shaft 31 is passed through the first axial hole 12 to achieve the purpose and function of fixing the position of the fastening arm 30 relative to the first rotating arm 10.
[0034] As a further supplement to this embodiment, the second rotating shaft 32 is disposed in the fourth axial hole 23. Since the second rotating shaft 32 can reciprocate along the axial direction of the fastening arm 30, the adjustment and tightening of the sand box clamp is achieved.
[0035] Another embodiment, a method for using a sand box fixture, comprising:
[0036] S11, assembling the matching box, is divided into two different situations. In one situation, the sand core is assembled on the mold, and an intermediate sand box is set on the periphery aligned with the mold sand box, and the intermediate sand box is used to provide lateral fastening force for the assembled sand core; in the other situation, the sand core / sand mold produced by quicksand core making or the sand core / sand mold produced by additive manufacturing is assembled according to the process requirements to form a core package. In particular, when producing heavier castings, several layers of sand boxes (at least one layer of sand boxes) can be set on the periphery of the core package to provide lateral fastening force for the core package; as mentioned above, the intermediate sand box and the set sand box are required to be clamped and fastened in pairs to prevent the longitudinal expansion force of the molten metal from separating the adjacent sand boxes, causing the molten metal to leak and cause the surface quality of the casting to be unqualified or even scrapped.
[0037] S12, clamping the sand box. According to the thickness of the edge of the sand box to be clamped, adjust the clamping space of the sand box clamp to a thickness that can accommodate the thickness of the edge to be clamped; then match the first clamping end 11 and the second clamping end 21 of the sand box clamp with the edge of the sand box to ensure that the clamping position is as close to the inside as possible to avoid the problem of the sand box clamp slipping caused by the edge of the sand box tilting outward; then rotate the fastening arm 30 to make the first clamping end 11 and the second clamping end 21 clamp the edge of the sand box to achieve the clamping effect on the adjacent sand box.
[0038] S13, dismantling, in the casting unpacking process, the fastening arm 30 is rotated in the opposite direction so that the clamping space between the first clamping end 11 and the second clamping end 21 is larger than the edge thickness of the sand box, the sand box fixture is disassembled, and the sand box fixture is cleaned to achieve the recycling and reuse of the sand box fixture.
[0039] The implementation of the technical solution of the present invention realizes the high efficiency and convenience of the box clamping, avoids the vibration of the sand box during the box clamping process, and protects the sand core in the sand box.
[0040] The above embodiments are merely descriptions of a typical application of the technical solution of the present invention, and reasonable expansion can be carried out on a reasonable basis without requiring creative work.
Claims
1. A sand box fixture, characterized in that: The invention comprises a first rotating arm (10), a second rotating arm (20) and a fastening arm (30), wherein the first rotating arm (10) is rotatably connected to the second rotating arm (20), and the fastening arm (30) is rotatably connected to the first rotating arm (10) and the second rotating arm (20), and the size of the clamping space formed between the first rotating arm (10) and the second rotating arm (20) is adjusted by adjusting the fastening arm (30).
2. The flask fixture according to claim 1, characterized in that: Cushion blocks (40) are provided at the ends of the first clamping end (11) and the second clamping end (21).
3. The flask fixture according to claim 2, characterized in that: The cushion block (40) is a cubic block.
4. The flask fixture according to claim 3, characterized in that: The contact surface between the cushion block (40) and the clamped piece is provided with an anti-slip texture.
5. The flask fixture according to claim 2, characterized in that: The cushion block (40) is rotatably arranged at the ends of the first clamping end (11) and the second clamping end (21).
6. The flask fixture according to claim 1, characterized in that: The first rotating arm (10) comprises the first clamping end (11) and the first connecting arm, the first clamping end (11) and the first connecting arm are connected at a certain angle, a first axial hole (12) is provided at the corner where the first clamping end (11) and the first connecting arm are connected, and a second axial hole (13) is provided at the other end of the first connecting arm away from the first clamping end (11); the second rotating arm (20) comprises the second clamping end (21) and the second connecting arm, the second clamping end (21) and the second connecting arm are connected at a certain angle, a third axial hole (22) is provided at a position closer to the corner where the second clamping end (21) and the second connecting arm are connected, and a fourth axial hole (23) is provided at the other end of the second connecting arm away from the second clamping end (21).
7. The flask fixture according to claim 6, characterized in that: The second shaft hole (13) of the first rotating arm (10) is connected to the third shaft hole (22) on the second rotating arm (20) via a third rotating shaft (60).
8. The flask fixture according to claim 1, characterized in that: The fastening arm (30) is provided with a first rotating shaft (31) and a second rotating shaft (32); the first rotating shaft (31) is arranged at one end of the fastening arm (30); the second rotating shaft (32) is movably arranged on the fastening arm 30, and the second rotating shaft (32) can move axially along the fastening arm (30).
9. The flask fixture according to claim 8, characterized in that: The first rotating shaft (31) is provided with a blind hole, and the inner wall of the blind hole is provided with a thread; the second rotating shaft (32) is provided with a through hole, and the inner wall of the through hole is provided with a thread.
10. A method for using the sand box fixture according to claim 1, characterized in that: include, S01, installation matching box; S02, clamping the sand box, clamping the sand box clamp on the edges of two adjacent sand boxes and locking them; S03, dismantle, remove the sand box fixture from the sand box, and clean it for reuse.