Water jacket sand core side wall punching block mechanism and punching mold opening mechanism

Abstract

The application relates to the technical field of engine cylinder block manufacturing, in particular to a water jacket sand core side wall punching and mold opening mechanism, which comprises a vertically-arranged telescopic unit and a lower mold insert, the lower mold insert is in a cover-shaped structure, the top of the telescopic end of the telescopic unit is provided with an inclined rail column block, the width of the inclined rail column block gradually increases from top to bottom, and two driving inclined surfaces are formed on the two sides, respectively, two vertically-arranged inclined guide rail blocks are respectively attached to the two driving inclined surfaces, a guide inclined surface matched with the driving inclined surface is arranged on the inner side of the inclined guide rail block, the top of the inclined guide rail block is inserted into the inner cavity of the lower mold insert, and a horizontally-arranged riser neck insert is fixedly assembled on the outer side of the top of the inclined guide rail block. The application can integrally form the riser neck on the side wall in the manufacturing process of the water jacket sand core, simplifies the production process, improves the production efficiency, does not depend on the technical level of the punching operator, is not easy to damage the water jacket sand core, and is favorable for controlling the product quality.

Description

Technical Field

[0001] This application relates to the field of engine block manufacturing technology, and in particular to a block-pulling mechanism and a drilling and mold-opening mechanism for drilling holes in the sidewall of a water jacket sand core. Background Technology

[0002] Engine cylinder blocks are generally made of ductile iron. The casting process requires creating riser necks on the sidewalls of the water jacket sand core to facilitate riser feeding. Currently, the common practice is to place the finished water jacket sand core on a drilling machine to drill holes, thereby creating the riser necks on the sidewalls. This method is cumbersome and inefficient. Drilling is done after the water jacket sand core has solidified, which severely tests the skill level of the drilling operators. Slight carelessness can damage the water jacket sand core and is also not conducive to controlling product quality. Utility Model Content

[0003] This application provides a block-pulling mechanism and a drilling and mold-opening mechanism for drilling holes in the sidewall of a water jacket sand core, in order to improve the following technical problems: Drilling is performed after the water jacket sand core has been cured and formed. This method is complicated, inefficient, and requires a high level of skill from the drilling operators. Carelessness can damage the water jacket sand core and is also not conducive to controlling product quality.

[0004] In a first aspect, this application provides a block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core, employing the following technical solution: A block-pulling mechanism for drilling the sidewall of a water jacket sand core includes a vertically arranged telescopic unit and a lower mold insert. The lower mold insert has a cover-like structure, and its outer peripheral wall is adapted to the inner peripheral sidewall of the water jacket sand core. The top of the telescopic end of the telescopic unit is provided with a sloping rail block. The width of the sloping rail block gradually increases from top to bottom and forms two driving inclined surfaces on both sides. Vertically arranged sloping guide rail blocks are attached to the two driving inclined surfaces. The inner side of the sloping guide rail block is provided with a guide inclined surface adapted to the driving inclined surface. The top of the sloping guide rail block is inserted into the inner cavity of the lower mold insert, and a horizontally arranged riser neck insert is fixedly assembled on the outer side of the top of the sloping guide rail block. The sidewall of the lower mold insert is provided with a hole through which the riser neck insert slides. When the telescopic unit is working, it drives the sloping rail block to rise, thereby driving the two sloping guide rail blocks to move horizontally in opposite directions, and driving the riser neck insert to form a riser neck on the sidewall of the water jacket sand core.

[0005] In one feasible technical solution of this application, the riser neck insert is a cylindrical structure with an internal threaded hole at the central axis of the cylindrical structure. The riser neck insert is connected to the top of the inclined guide block by a first screw, and the head of the first screw is concealed in the internal threaded hole.

[0006] In one feasible technical solution of this application, the top of the inclined guide block is provided with an arc surface flush with the outer peripheral wall of the riser neck insert.

[0007] In one feasible technical solution of this application, the outer end of the riser neck insert is provided with a gradually decreasing oblique conical surface.

[0008] In one feasible technical solution of this application, T-shaped sliders arranged obliquely are provided on both sides of the inclined rail block, and T-shaped grooves are provided on the inner side of the inclined rail block, and the T-shaped sliders slide freely within the T-shaped sliders.

[0009] In one feasible technical solution of this application, the telescopic unit includes a vertically arranged cylinder and a connecting unit, wherein the connecting unit is located between the bottom of the inclined rail block and the top of the telescopic shaft of the cylinder.

[0010] In one feasible technical solution of this application, the connecting unit includes an upper connecting block with a fixing plate connected to the bottom of the inclined rail column block, a lower connecting block fixed to the upper connecting block by bolts, a T-shaped connecting groove provided at the bottom of the lower connecting block, and a T-shaped connector that can rotate freely in the T-shaped connecting groove fixed to the top of the telescopic unit.

[0011] In one feasible technical solution of this application, a horizontally arranged guide rod is fixed on the outer wall of the inclined guide block by a second screw, and a support block is fixed inside the mold body, with the guide rod slidably assembled in the support block.

[0012] Secondly, this application provides a punching and mold-opening mechanism, which adopts the following technical solution: A drilling and mold-opening mechanism includes multiple sets of block-pulling mechanisms for drilling the sidewalls of water jacket sand cores, as described above.

[0013] In one feasible technical solution of this application, it further includes a bottom frame, a lower module seat, a lower core box module, an upper core box module, an upper module seat, an air blowing plate, and a sand shooting plate, which are assembled sequentially from bottom to top. The bottom frame, the lower module seat, and the lower core box module form a square frame structure. A lower top plate is provided inside the bottom frame. Multiple sets of the drilling block pulling mechanism for the side wall of the water jacket sand core are installed on the lower top plate and arranged at intervals in the inner cavity of the square frame structure.

[0014] In summary, this application includes at least one of the following beneficial technical effects: When the telescopic unit is working, it drives the inclined rail column to rise, thereby driving the two inclined guide rail blocks to move horizontally in opposite directions. It also drives the riser neck insert to form a riser neck on the side wall of the water jacket sand core. Thus, the riser neck can be integrally formed on the side wall during the production process of the water jacket sand core, which simplifies the production process, improves production efficiency, and no longer depends on the technical level of the drilling operator. Therefore, it is not easy to damage the water jacket sand core, which is conducive to controlling product quality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the block-pulling mechanism for drilling holes in the sidewall of the water jacket sand core according to an embodiment of this application.

[0017] Figure 2 This is an exploded view of the block-pulling mechanism for drilling holes in the sidewall of the water jacket sand core according to an embodiment of this application. Figure 3 This is a schematic diagram of the block extraction mechanism in the mold closing and sand shooting state in an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the block extraction mechanism in the mold opening and ejection state in the embodiment of this application.

[0019] Figure 5 This is a cross-sectional structural schematic diagram of the punching and mold-opening mechanism according to an embodiment of this application.

[0020] Figure 6 This is a schematic diagram of the internal structure of the punching and mold-opening mechanism in the embodiments of this application.

[0021] Explanation of reference numerals in the attached figures: 100. Drilling block mechanism for sidewall of water jacket sand core; 1. Telescopic unit; 11. Cylinder; 12. Upper connecting block; 13. Lower connecting block; 14. T-shaped connector; 2. Lower mold insert; 21. Hole; 3. Inclined rail block; 31. T-shaped slider; 4. Inclined guide rail block; 41. Arc surface; 42. T-shaped groove; 5. Riser neck insert; 51. Internal threaded hole; 52. Inclined conical surface; 6. First screw; 7. Second screw; 8. Guide rod; 9. Support block; 200. Base frame; 300. Lower module base; 400, Lower Core Box Module; 500, Upper Chip Box Module; 600. Upper module socket; 700. Air blowing plate; 800, sandblasting plate; 900. Lower top plate. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0027] This application discloses a block-pulling mechanism 100 for drilling holes in the sidewall of a water jacket sand core. (Refer to...) Figure 1-4The drilling mechanism 100 for the sidewall of the water jacket sand core includes a vertically arranged telescopic unit 1 and a lower mold insert 2. The lower mold insert 2 has a cover-like structure, and its outer peripheral wall is adapted to the inner peripheral sidewall of the water jacket sand core. A sloping rail block 3 is provided at the top of the telescopic end of the telescopic unit 1. The width of the sloping rail block 3 gradually increases from top to bottom and forms two driving inclined surfaces on both sides. Vertically arranged inclined guide rail blocks 4 are attached to the two driving inclined surfaces respectively. The inner side is provided with a guide slope adapted to the drive slope. The top of the inclined guide block 4 is inserted into the inner cavity of the lower mold insert 2. The outer side of the top of the inclined guide block 4 is fixedly equipped with a horizontally arranged riser neck insert 5. The side wall of the lower mold insert 2 is provided with a hole 21 for the riser neck insert 5 to slide through. When the telescopic unit 1 is working, it drives the inclined rail column block 3 to rise so as to drive the two inclined guide blocks 4 to move horizontally in opposite directions, and drives the riser neck insert 5 to form a riser neck on the side wall of the water jacket sand core.

[0028] In this embodiment, the riser neck insert 5 is a cylindrical structure with an internally threaded hole 51 at its central axis. The riser neck insert 5 is connected to the top of the inclined guide block 4 by a first screw 6, the head of which is concealed in the internally threaded hole 51. The top of the inclined guide block 4 has an arc surface 41 flush with the outer peripheral wall of the riser neck insert 5, and the outer end of the riser neck insert 5 has a gradually decreasing inclined conical surface 52. The riser neck insert 5 designed above has a simple structure, is easy to install, and facilitates rapid forming of the riser neck.

[0029] To make the sliding between the inclined rail block 3 and the inclined guide rail block 4 more stable, T-shaped sliders 31 arranged obliquely are provided on both sides of the inclined rail block 3, and T-shaped grooves 42 are provided on the inner side of the inclined guide rail block 4, and the T-shaped sliders 31 slide freely within the T-shaped sliders 31.

[0030] In this embodiment, the telescopic unit 1 includes a vertically arranged cylinder 11 and a connecting unit. The connecting unit is located between the bottom of the inclined rail block 3 and the top of the telescopic shaft of the cylinder 11. The connecting unit includes an upper connecting block 12 with a fixing plate connected to the bottom of the inclined rail block 3. A lower connecting block 13 is fixed to the upper connecting block 12 by bolts. A T-shaped connecting groove is provided at the bottom of the lower connecting block 13. A T-shaped connecting head 14 that can rotate freely in the T-shaped connecting groove is fixed to the top of the telescopic unit 1. The telescopic unit 1 designed above has a simple structure and a firm connection, and is not prone to loosening with frequent use.

[0031] To make the inclined guide block 4 more stable when moving horizontally, a horizontally arranged guide rod 8 is fixed on the outer wall of the inclined guide block 4 by a second screw 7. A support block 9 is also fixed inside the mold body, and the guide rod 8 is slidably assembled in the support block 9.

[0032] The beneficial technical effects of the block-pulling mechanism 100 for drilling the sidewall of the water jacket sand core in this application embodiment are roughly as follows: When the telescopic unit 1 is working, it drives the inclined rail block 3 to rise, thereby driving the two inclined guide rail blocks 4 to move horizontally in opposite directions. It also drives the riser neck insert 5 to form a riser neck on the side wall of the water jacket sand core. Thus, the riser neck can be integrally formed on the side wall during the production process of the water jacket sand core, which simplifies the production process, improves production efficiency, and no longer depends on the technical level of the drilling operator. Therefore, it is not easy to damage the water jacket sand core, which is conducive to controlling product quality.

[0033] This application also provides a punching and mold-opening mechanism, as described in the embodiments below. Figure 5 and Figure 6 The drilling and mold-opening mechanism includes multiple sets of block-pulling mechanisms 100 for drilling the sidewalls of the water jacket sand core, as described above, and a bottom frame 200, a lower module base 300, a lower core box module 400, an upper core box module 500, an upper module base 600, an air blowing plate 700, and a sand-shooting plate 800 assembled sequentially from bottom to top. The bottom frame 200, lower module base 300, and lower core box module 400 form a square frame structure. A lower top plate 900 is provided inside the bottom frame 200. The multiple sets of block-pulling mechanisms 100 for drilling the sidewalls of the water jacket sand core are all installed on the lower top plate 900 and arranged at intervals in the inner cavity of the square frame structure. Specifically, there are six sets of block-pulling mechanisms 100 for drilling the sidewalls of the water jacket sand core.

[0034] The above-mentioned drilling and mold-opening mechanism can integrally form the riser neck on the side wall during the production of the water jacket sand core, which simplifies the production process, improves production efficiency, and no longer depends on the technical level of the drilling operator, thus making it less likely to damage the water jacket sand core and helping to control product quality.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core, characterized in that, The device includes a vertically arranged telescopic unit (1) and a lower mold insert (2). The lower mold insert (2) has a cover-like structure. The outer peripheral wall of the lower mold insert (2) is adapted to the inner peripheral side wall of the water jacket sand core. The top of the telescopic end of the telescopic unit (1) is provided with a sloping rail block (3). The width of the sloping rail block (3) gradually increases from top to bottom and forms two driving inclined surfaces on both sides. Vertically arranged inclined guide rail blocks (4) are attached to the two driving inclined surfaces respectively. The inner side of the inclined guide rail block (4) is provided with a guide that adapts to the driving inclined surface. On the inclined surface, the top of the inclined guide block (4) is inserted into the inner cavity of the lower mold insert (2), and a horizontally arranged riser neck insert (5) is fixedly assembled on the outer side of the top of the inclined guide block (4). The side wall of the lower mold insert (2) is provided with a hole (21) through which the riser neck insert (5) slides. When the telescopic unit (1) is working, it drives the inclined rail column block (3) to rise so as to drive the two inclined guide blocks (4) to move horizontally in opposite directions, and drives the riser neck insert (5) to form a riser neck on the side wall of the water jacket sand core.

2. The block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core according to claim 1, characterized in that, The riser neck insert (5) is a cylindrical structure with an internal threaded hole (51) at the central axis of the cylindrical structure. The riser neck insert (5) is connected to the top of the inclined guide block (4) by a first screw (6), the head of the first screw (6) being concealed in the internal threaded hole (51).

3. The block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core according to claim 2, characterized in that, The top of the inclined guide block (4) is provided with an arc surface (41) flush with the outer peripheral wall of the riser neck insert (5).

4. The block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core according to claim 2, characterized in that, The outer end of the riser neck insert (5) is provided with a gradually decreasing oblique conical surface (52).

5. The block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core according to claim 1, characterized in that, The inclined rail block (3) is also provided with T-shaped sliders (31) arranged obliquely on both sides, and the inner side of the inclined guide rail block (4) is also provided with a T-shaped groove (42), and the T-shaped slider (31) slides freely in the T-shaped slider (31).

6. The block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core according to claim 1, characterized in that, The telescopic unit (1) includes a vertically arranged cylinder (11) and a connecting unit, which is located between the bottom of the inclined rail block (3) and the top of the telescopic shaft of the cylinder (11).

7. The block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core according to claim 6, characterized in that, The connecting unit includes an upper connecting block (12) with a fixed plate connected to the bottom of the inclined rail column block (3), and a lower connecting block (13) is fixed to the upper connecting block (12) by bolts. The bottom of the lower connecting block (13) is provided with a T-shaped connecting groove. The top of the telescopic unit (1) is fixed with a T-shaped connector (14) that can rotate freely in the T-shaped connecting groove.

8. The block-pulling mechanism for drilling holes in the sidewall of a water jacket sand core according to claim 1, characterized in that, A horizontally arranged guide rod (8) is fixed on the outer wall of the inclined guide block (4) by a second screw (7), and a support block (9) is fixed inside the mold body. The guide rod (8) is slidably assembled in the support block (9).

9. A punching and mold-opening mechanism, characterized in that, Includes multiple sets of block-pulling mechanisms (100) for drilling the sidewalls of water jacket sand cores as described in any one of claims 1-8.

10. The punching and mold-opening mechanism according to claim 9, characterized in that, It also includes a bottom frame (200), a lower module seat (300), a lower core box module (400), an upper core box module (500), an upper module seat (600), an air blowing plate (700), and a sand shooting plate (800) assembled from bottom to top. The bottom frame (200), the lower module seat (300), and the lower core box module (400) form a square frame structure. A lower top plate (900) is provided inside the bottom frame (200). Multiple sets of the drilling block pulling mechanism (100) for the side wall of the water jacket sand core are installed on the lower top plate (900) and arranged at intervals in the inner cavity of the square frame structure.

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