Sand core for forming calipers
By introducing a stabilizing and reinforcing connection mechanism into the sand core, the problem of unstable connection during the sand core manufacturing process is solved, the rigidity and deformation resistance of the core box are enhanced, and the service life is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-10
- Publication Date
- 2026-03-13
AI Technical Summary
In the manufacturing process of existing sand cores, the joints lack reinforcement, resulting in unstable connections and affecting service life.
A sand core with a stabilizing mechanism and a reinforced connection mechanism was designed. The connection between the anti-slip plate and the threaded rod enhances the rigidity and deformation resistance of the weak areas of the core box, and prevents mechanical stress during demolding from causing dimensional distortion or cracking.
It significantly improves the rigidity and deformation resistance of the core box, extends the service life of the core box, and avoids dimensional instability problems during sand injection and demolding.
Smart Images
Figure CN223989037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand core technology, specifically a sand core for caliper forming. Background Technology
[0002] Sand cores used in caliper casting are precision sand mold components bonded with special adhesives. Their main function is to precisely form the complex hydraulic oil passages, piston holes, and connecting channels inside the casting during the pouring of molten metal. These internal cavity structures cannot be directly formed by external molds. The sand core must maintain its shape stability under the impact of high-temperature molten metal and can be broken and removed after the casting solidifies and cools, thus leaving the required hollow oil passage system. Sand cores are usually made from core boxes and hardened by baking or other methods to achieve the necessary strength and dimensional accuracy.
[0003] However, in the existing sand core manufacturing process within the core box, the outer side of the connection points lacks reinforcement when the sand core production pipeline extends from the inside of the core box to the outside, affecting connection stability and service life. Therefore, those skilled in the art have provided a sand core for caliper forming to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to provide a sand core for caliper forming, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A sand core for caliper forming includes a core box body, an assembly connection pad fixed to the bottom of the core box body, an installation cover provided on the top of the core box body, an assembly connection hole provided on the outer side of the assembly connection pad, a stabilizing mechanism provided on the outer side of the core box body, and a reinforcing connection mechanism provided on the top of the assembly connection pad.
[0007] The stabilizing mechanism includes a mounting kit, a movable sleeve rotatably connected to the outer side of the mounting kit, an anti-disengagement groove formed on the outer side of the mounting kit, an anti-disengagement slider slidably connected to the mounting kit through the anti-disengagement groove, an assembly mounting pad fixed to the outer side of the anti-disengagement slider, a first semi-threaded rod provided on the outer side of the assembly mounting pad, a second semi-threaded rod fixed to the outer side of the movable sleeve, anti-slip plates sleeved on the outer sides of the first and second semi-threaded rods, and metal nuts threadedly connected to the outer sides of the first and second semi-threaded rods.
[0008] As a further embodiment of this utility model: the reinforcing connection mechanism includes a connecting housing, the inner top wall of the connecting housing is provided with a fixed mounting pad, the outer side of the fixed mounting pad is fixed with a limit mounting sleeve, the outer side of the fixed mounting pad is connected with a return spring, one end of the return spring is provided with a movable mounting pad, one side of the movable mounting pad is provided with a guide connecting post extending to the outer side of the assembly connecting pad, and one end of the guide connecting post is provided with an anti-slip pad.
[0009] As a further improvement of this utility model: the interior of the limiting mounting sleeve is provided with a groove, and the size of the groove is adapted to the size of the guide connecting post.
[0010] As a further improvement of this utility model: the assembly connecting pad has a through hole inside, and the size of the through hole is adapted to the size of the guide connecting post.
[0011] As a further improvement of this invention, the radius of the first semi-threaded rod is the same as the radius of the second semi-threaded rod.
[0012] As a further embodiment of this utility model, one side of the assembly is embedded inside the core box body.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This device is equipped with an anti-slip plate, which can easily fix the mounting and moving sleeves. The mounting and moving sleeves can be put on the outside of the corresponding sand core production pipeline, which plays a reinforcing role, significantly improving the rigidity and deformation resistance of the weak area of the core box, avoiding the mechanical stress caused by frequent sand shooting, vibration and demolding, which can lead to core box size distortion or cracking, and extending the core box life.
[0015] 2. This device is equipped with a reinforcement connection mechanism. The movable mounting pad can drive the guide connecting column and the anti-slip pad to move simultaneously, and make the anti-slip pad fit against the outer side of the mounting part of the assembly connecting pad, which enhances the support of the outer side of the mounting part of the assembly connecting pad and plays an auxiliary reinforcement role, reducing the possibility of the core box body and the assembly connecting pad shaking after installation. Attached Figure Description
[0016] Figure 1 A three-dimensional view of a sand core used for caliper forming;
[0017] Figure 2 A perspective view of a stabilizing mechanism in a sand core used for caliper forming;
[0018] Figure 3 A schematic diagram of the outer structure of an anti-disengagement slider in a sand core used for caliper forming;
[0019] Figure 4 This is a perspective view of a reinforcing connection mechanism in a sand core used for caliper forming.
[0020] In the diagram: 1. Core box body; 2. Assembly connecting pad; 3. Mounting cover; 4. Assembly connecting hole; 5. Stabilizing mechanism; 51. Assembly kit; 52. Moving sleeve; 53. Anti-disengagement groove; 54. Anti-disengagement slider; 55. Assembly mounting pad; 56. First half-threaded rod; 57. Second half-threaded rod; 58. Anti-slip plate; 59. Metal nut; 6. Reinforcing connection mechanism; 61. Connecting housing; 62. Fixed mounting pad; 63. Limiting mounting sleeve; 64. Return spring; 65. Movable mounting pad; 66. Guide connecting post; 67. Anti-slip pad. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-3 In this embodiment of the present invention, a sand core for caliper forming includes a core box body 1, an assembly connection pad 2 fixed at the bottom of the core box body 1, an installation cover 3 provided at the top of the core box body 1, an assembly connection hole 4 opened on the outer side of the assembly connection pad 2, a stabilizing mechanism 5 provided on the outer side of the core box body 1, and a reinforcing connection mechanism 6 provided at the top of the assembly connection pad 2.
[0023] The stabilizing mechanism 5 includes a mounting bracket 51, one side of which is embedded inside the core box body 1. A movable sleeve 52 is rotatably connected to the outer side of the mounting bracket 51. An anti-disengagement groove 53 is provided on the outer side of the mounting bracket 51. An anti-disengagement slider 54 is slidably connected to the mounting bracket 51 through the anti-disengagement groove 53. An assembly mounting pad 55 is fixed to the outer side of the anti-disengagement slider 54. A first semi-threaded rod 56 is provided on the outer side of the assembly mounting pad 55. A second semi-threaded rod 57 is fixed to the outer side of the movable sleeve 52. The radius of the first semi-threaded rod 56 is the same as the radius of the second semi-threaded rod 57. An anti-slip plate 58 is sleeved on the outer side of the first semi-threaded rod 56 and the second semi-threaded rod 57. A metal nut 59 is threadedly connected to the outer side of the first semi-threaded rod 56 and the second semi-threaded rod 57. When the sand core production pipeline extends from the inside of the core box body 1 to the outside... The operator can rotate the movable sleeve 52 outside the mounting 51. At this time, the corresponding surfaces of the mounting 51 and the movable sleeve 52 can fit together. Then, the anti-disengagement slider 54 can be moved. The anti-disengagement slider 54 can slide in the anti-disengagement groove 53, and the anti-disengagement slider 54 can drive the first half-threaded rod 56 to move at the same time. The first half-threaded rod 56 and the second half-threaded rod 57 can form a complete threaded rod, and can be threadedly connected to the first half-threaded rod 56 and the second half-threaded rod 57 through the metal nut 59, thereby conveniently completing the fixing of the mounting 51 and the movable sleeve 52. The mounting 51 and the movable sleeve 52 can be fitted on the outside of the corresponding sand core production pipeline, significantly improving the rigidity and deformation resistance of the weak area of the core box, avoiding the mechanical stress caused by frequent sand shooting, vibration and demolding, which can lead to core box dimensional distortion or cracking, and extending the core box life.
[0024] In one embodiment of this utility model, the reinforcing connection mechanism 6 includes a connecting housing 61. A fixed mounting pad 62 is provided on the inner top wall of the connecting housing 61. A limiting mounting sleeve 63 is fixed to the outer side of the fixed mounting pad 62. A return spring 64 is connected to the outer side of the fixed mounting pad 62. A movable mounting pad 65 is provided at one end of the return spring 64. A guide connecting post 66 extending to the outer side of the assembly connecting pad 2 is provided on one side of the movable mounting pad 65. A groove is provided inside the limiting mounting sleeve 63, and the size of the groove matches the size of the guide connecting post 66. A through hole is provided inside the assembly connecting pad 2, and the size of the through hole matches the size of the guide connecting post. The guide connecting post 66 is size-adapted, and an anti-slip pad 67 is installed at one end of the guide connecting post 66. When the assembly connecting pad 2 on the outside of the core box body 1 is fixed from the assembly connecting hole 4 by bolts, the limiting mounting sleeve 63 in the connecting housing 61 provides elastic force. The limiting mounting sleeve 63 can push the movable mounting pad 65 to move. At this time, the movable mounting pad 65 can drive the guide connecting post 66 and the anti-slip pad 67 to move at the same time, and make the anti-slip pad 67 fit against the outside of the mounting part of the assembly connecting pad 2, which enhances the support of the outside of the mounting part of the assembly connecting pad 2 and plays an auxiliary reinforcement role, reducing the possibility of the core box body 1 and the assembly connecting pad 2 shaking after installation.
[0025] The working principle of this utility model is as follows: This device is equipped with an anti-slip plate 58. The operator can rotate the movable sleeve 52 outside the mounting 51. At this time, the corresponding surfaces of the mounting 51 and the movable sleeve 52 can fit together. Then, the anti-disengagement slider 54 can be moved. The anti-disengagement slider 54 can slide within the anti-disengagement groove 53, and the anti-disengagement slider 54 can drive the first half-threaded rod 56 to move simultaneously. The first half-threaded rod 56 and the second half-threaded rod 57 can form a complete threaded rod, and can be threadedly connected to the first half-threaded rod 56 and the second half-threaded rod 57 through a metal nut 59, thereby conveniently completing the fixing of the mounting 51 and the movable sleeve 52. The mounting 51 and the movable sleeve 52 can be fitted onto the outside of the corresponding sand core production pipeline, significantly improving the weak area of the core box. The rigidity and deformation resistance of the core box prevent mechanical stress caused by frequent sand shooting, vibration, and demolding, thus extending the life of the core box. The device is equipped with a reinforcing connection mechanism 6. When the assembly connection pad 2 on the outside of the core box body 1 is fixed from the assembly connection hole 4 by bolts, the limiting mounting sleeve 63 in the connecting housing 61 provides elastic force. The limiting mounting sleeve 63 can push the movable mounting pad 65 to move. At this time, the movable mounting pad 65 can drive the guide connecting column 66 and the anti-slip pad 67 to move simultaneously, and make the anti-slip pad 67 fit against the outside of the mounting part of the assembly connection pad 2, which enhances the support of the outside of the mounting part of the assembly connection pad 2 and plays an auxiliary reinforcing role, reducing the possibility of the core box body 1 and the assembly connection pad 2 shaking after installation.
[0026] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A sand core for caliper forming, comprising a core box body (1), characterized in that, The bottom of the core box body (1) is fixedly connected with an assembly connecting pad (2), the top of the core box body (1) is provided with a mounting cover (3), the outer side of the assembly connecting pad (2) is provided with an assembly connecting hole (4), the outer side of the core box body (1) is provided with a stabilizing mechanism (5), and the top of the assembly connecting pad (2) is provided with a reinforcing connecting mechanism (6). The stabilizing mechanism (5) comprises an assembly sleeve (51), the outer side of the assembly sleeve (51) is rotatably connected with a moving sleeve (52), the outer side of the assembly sleeve (51) is provided with an anti-falling sliding groove (53), the assembly sleeve (51) is slidably connected with an anti-falling sliding block (54) through the anti-falling sliding groove (53), the outer side of the anti-falling sliding block (54) is fixedly connected with an assembly mounting pad (55), the outer side of the assembly mounting pad (55) is provided with a first half-threaded rod (56), the outer side of the moving sleeve (52) is fixedly connected with a second half-threaded rod (57), the outer sides of the first half-threaded rod (56) and the second half-threaded rod (57) are sleeved with an anti-skid plate (58), and the outer sides of the first half-threaded rod (56) and the second half-threaded rod (57) are threadedly connected with a metal nut (59).
2. A sand core for caliper forming according to claim 1, wherein, The reinforcing connecting mechanism (6) comprises a connecting shell (61), the inner top wall of the connecting shell (61) is provided with a fixed mounting pad (62), the outer side of the fixed mounting pad (62) is fixedly connected with a limiting mounting sleeve (63), the outer side of the fixed mounting pad (62) is connected with a return spring (64), one end of the return spring (64) is provided with a movable mounting pad (65), one side of the movable mounting pad (65) is provided with a guide connecting column (66) extending to the outer side of the assembly connecting pad (2), and one end of the guide connecting column (66) is provided with an anti-skid pad (67).
3. A sand core for caliper forming according to claim 2, wherein, The limiting mounting sleeve (63) is internally provided with a groove, and the size of the groove is matched with the size of the guide connecting column (66).
4. A sand core for caliper forming according to claim 2, wherein, The assembly connecting pad (2) is internally provided with a through hole, and the size of the through hole is matched with the size of the guide connecting column (66).
5. A sand core for caliper forming according to claim 1, wherein, The radius of the first half-threaded rod (56) is the same as the radius of the second half-threaded rod (57).
6. A sand core for caliper forming according to claim 1, wherein, One side of the assembly sleeve (51) is embedded in the inside of the core box body (1).