Core assembly structure of water pump core and water passing core of cylinder body
By adding small side plate cores and multiple core bolts to the water pump core and water-through core core structure of the diesel engine cylinder block, the problem of low accuracy after core group combination is solved, and higher core group accuracy and firmness are achieved.
Patent Information
- Application Number
- CN202421512043.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-28
AI Technical Summary
When producing the water pump core and water-through core of the L9 National VI diesel engine cylinder block, there are problems such as low accuracy after the core group is combined and the dimensional accuracy cannot be guaranteed.
A core-group structure is adopted, including a water pump core, a water-water core and a small side plate core. By pre-embedding the core-group bolts in the first core head and the third core head, and fixing them through the small side-group core and the water-water core at both ends, two core-group bolts form three core structures to ensure the firmness and accuracy of the core.
By adding the design of small side plate cores and multiple core bolts, the accuracy and firmness of the sand core core group is effectively improved, ensuring the guarantee of dimensional accuracy.
Smart Images
Figure CN222830664U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of diesel engine cylinder casting, and particularly relates to a core assembly structure of a cylinder water pump core and a water passing core. Background Art
[0002] When producing the water pump core and water flow core of the L9 National VI diesel engine cylinder block, the water pump core and the water flow core need to be combined into a core group. In this way, there is a problem of how to combine the two cores.
[0003] When two cores are assembled, they are usually assembled manually first, and then the core assembly bolts are passed through the core assembly, and the nuts are used to tighten the core assembly. This often results in low precision and inability to guarantee dimensional accuracy after the core assembly. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a core assembly structure of a cylinder water pump core and a water flow core.
[0005] The technical scheme adopted by the utility model is a core assembly structure of a cylinder water pump core and a water flow core, comprising a water pump core, a water flow core and a small side plate core, wherein a first core head and a water pump core assembly are arranged at a vertical water cavity of the water flow core, a second core head and a small side plate core assembly are arranged at a side of the water pump core away from the water flow core, the first core head and the second core head are coaxial, and a core assembly bolt is pre-embedded in the center of the first core head, the core assembly bolt passes through the water pump core and the small side plate core and is fixed with a nut on the back side of the small side plate core, a fourth core head is arranged at the third core head of the small side plate core extending to the end of the water flow channel of the water flow core, the fourth core head is in surface contact with the third core head, a core assembly bolt is pre-embedded in the third core head, the core assembly bolt passes through the fourth core head and is fixed with a nut on the back side of the small side plate core.
[0006] Furthermore, a cross bar is vertically welded to the end of the core bolt, and the cross bar and the core bolt are in a T shape.
[0007] Furthermore, the cross bars of the core assembly bolt ends embedded in the first core head and the third core head are perpendicular to each other.
[0008] Furthermore, a U-shaped groove is provided on the back of the fourth core head, and a nut for locking the third core head and the fourth core head is arranged in the U-shaped groove.
[0009] The core assembly structure of the utility model increases the small side plate core when assembling the water pump core and the water passing core, and changes from one core assembly bolt assembling two sand cores to two core assembly bolts assembling three sand cores. The water passing core is clamped and fixed in the middle, and the small side plate core is fixed to both ends of the water passing core, so that the core assembly is more firm and reliable, and the core assembly accuracy of the sand core is effectively improved, and the dimensional accuracy is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1It is a cutaway schematic diagram of the utility model;
[0011] Figure 2 It is a structural schematic diagram of the utility model;
[0012] Figure 3 It is a schematic diagram of the water-passing core cavity of the utility model;
[0013] Figure 4 It is a schematic diagram of the core cavity of the small side plate of the utility model;
[0014] Figure 5 is a schematic diagram of a prior art core box;
[0015] Figure 6 It is a cutaway schematic diagram of the prior art;
[0016] Figure 7 It is a structural schematic diagram of the prior art.
[0017] In the figure: 1, core box; 11, water pump core cavity; 12, water core cavity; 13, small side plate core cavity; 2, water pump core; 3, water core; 31, vertical water cavity; 32, water flow channel; 4-core bolts; 41, cross bar; 5, small side plate core. DETAILED DESCRIPTION
[0018] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of the assembly structure of a cylinder water pump core and a water flow core of the utility model in conjunction with the accompanying drawings.
[0019] like Figure 1~Figure 4 As shown, a core assembly structure of a cylinder water pump core and a water flow core comprises a water pump core 2, a water flow core 3 and a small side plate core 5. The water flow core 3 is provided with a first core head at a vertical water cavity 31 to be combined with the water pump core 2. The water pump core 2 is provided with a second core head at a side away from the water flow core 3 to be combined with the small side plate core 5. The first core head is coaxial with the second core head, and a core assembly bolt 4 is pre-embedded in the center of the first core head. The core assembly bolt 4 passes through the water pump core 2 and the small side plate core 4 and is fixed with a nut on the back of the small side plate core 4. The small side plate core 4 is extended to the third core head at the end of the water flow channel 32 of the water flow core 3 to be provided with a fourth core head. The fourth core head is in surface contact with the third core head. The third core head is pre-embedded with a core assembly bolt 4. The core assembly bolt 4 passes through the fourth core head and is fixed with a nut on the back of the small side plate core 5.
[0020] In this embodiment, the core cavity 13 of the small side plate core 5 can be separately arranged in the core box. The end of the core assembly bolt 4 is vertically welded with a cross bar 41, and the cross bar 41 is T-shaped with the core assembly bolt 4. The cross bars 41 of the ends of the core assembly bolts 4 embedded in the first core head and the third core head are perpendicular to each other, which can increase the stability of the core assembly structure. A U-shaped groove is provided on the back of the fourth core head, and the nut for locking the third core head and the fourth core head is set in the U-shaped groove.
[0021] like Figure 5~Figure 7 As shown, in the original process, a water pump core cavity 11 and a water core cavity 12 are provided in the core box 1, a core assembly bolt 4 is first placed in the water core cavity 12, and the water pump core cavity 11 and the water core cavity 12 are filled with sand driven by compressed air to produce a water core 3 and a water pump core 2 with a core assembly bolt 4. The water core 3 is provided with a first core head at the vertical water cavity 31 to be combined with the water pump core 2, the core assembly bolt 4 passes through the water pump core 2, and the second core head provided on the back of the water pump core is used to fasten the core assembly with a nut. There is only one fixing point, and the accuracy after core assembly is low, and the dimensional accuracy cannot be guaranteed.
[0022] The core assembly structure of the utility model increases the small side plate core 5 when the water pump core 2 and the water passing core 3 are assembled, and changes are made from the original one core assembly bolt 4 to two core assembly bolts 4 to three sand cores. The water passing core 3 is clamped and fixed in the middle, and the small side plate core 5 is fixed to both ends of the water passing core 3, so that the core assembly is more firm and reliable, and the sand core assembly accuracy is effectively improved.
[0023] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.
Claims
1. A core assembly structure of a cylinder water pump core and a water flow core, characterized in that: The invention comprises a water pump core (2), a water flow core (3) and a small side plate core (5). The water flow core (3) is provided with a first core head at a vertical water cavity (31) to be combined with the water pump core (2). The water pump core (2) is provided with a second core head at a side away from the water flow core (3) to be combined with the small side plate core (5). The first core head is coaxial with the second core head, and a core assembly bolt (4) is pre-embedded in the center of the first core head. The core assembly bolt (4) passes through the water pump core (2) and the small side plate core (5) and is fixed on the back of the small side plate core (5) with a nut. The small side plate core (5) is extended to the third core head at the end of the water flow channel (32) of the water flow core (3) and a fourth core head is provided. The fourth core head is in surface contact with the third core head. The third core head is pre-embedded with a core assembly bolt (4). The core assembly bolt (4) passes through the fourth core head and is fixed on the back of the small side plate core (5) with a nut.
2. The core assembly structure of the cylinder water pump core and the water flow core according to claim 1, characterized in that: A cross bar (41) is vertically welded to the end of the core assembly bolt (4), and the cross bar (41) and the core assembly bolt (4) are in a T-shape.
3. The core assembly structure of the cylinder water pump core and the water flow core according to claim 2, characterized in that: The cross bars (41) at the ends of the core assembly bolts (4) pre-buried in the first core head and the third core head are perpendicular to each other.
4. The core assembly structure of a cylinder water pump core and a water flow core according to any one of claims 1 to 3, characterized in that: A U-shaped groove is arranged on the back of the fourth core head, and a nut for locking the third core head and the fourth core head is arranged in the U-shaped groove.