An adjustable core support fixing device for casting molds

Abstract

This utility model relates to the field of casting mold technology, and in particular to an adjustable core support fixing device for casting molds, comprising a mold body. The device is characterized in that: a lower core support is provided at the top center of the mold body; an upper rotating cylinder is rotatably connected to the inner side of the vertical end of the lower core support; a central connecting shaft is fixedly connected to the bottom of the upper rotating cylinder, passing through the lower core support; and two adjusting turntables and the lower rotating cylinder are sequentially fixedly connected to the outside of the central connecting shaft from top to bottom. In this utility model, the central connecting shaft, lower rotating cylinder, adjusting turntables, guide groove, short column, auxiliary connecting rod, and threaded half-ring facilitate the adjustable core support fixing device for casting molds. Before the core support structure, composed of the lower and upper core supports, is fixedly installed onto the mold body, the adjustable threaded fixing structure adapts to different sizes of threaded slots, assisting the core support structure in achieving fixed installation, thus reducing the limitations imposed by the previous use of threaded components for core support fixing.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, specifically to an adjustable core support fixing device for casting molds. Background Technology

[0002] During the casting process, core supports are placed inside the mold to form cavities or complex structures inside the casting, such as pipes and holes. The presence of core supports can prevent the casting metal from shrinking or deforming during solidification, thereby maintaining the overall structural stability of the casting. Since the metal shrinks during the casting process, core supports help control the shrinkage of the casting by providing additional support and positioning, thereby ensuring that the size and shape of the final casting conform to the expected design.

[0003] Existing casting mold core supports can be quickly fixed to the mold using pre-drilled bolts at the bottom before use. However, due to the fixed size of the bolts, the non-adjustable setting of the fixing components can easily lead to mismatch problems during actual assembly of the core support, reducing installation efficiency. Therefore, an adjustable core support fixing device for casting molds is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable core support fixing device for casting molds, so as to solve the problem mentioned in the background art that the existing casting mold core supports are not suitable and are not convenient for quick installation during fixed installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable core support fixing device for a casting mold includes a mold body, characterized in that: a lower core support is provided at the top center of the mold body; an upper rotating cylinder is rotatably connected to the inner side of the vertical end of the lower core support; a central connecting shaft is fixedly connected to the bottom of the upper rotating cylinder, passing through the lower core support; two adjusting turntables and the lower rotating cylinder are fixedly connected sequentially from top to bottom to the outside of the central connecting shaft; guide grooves are provided at both the upper and lower ends of the adjusting turntables; a short column is slidably connected to the inner side of the guide groove; an auxiliary connecting rod is fixedly connected to the end of the short column away from the deep interior of the guide groove; a threaded half-ring extending into a pre-reserved threaded groove inside the mold body is fixedly connected to the outside of the auxiliary connecting rod; and a perforated rotating head is fixedly connected to the top of the upper rotating cylinder.

[0007] Preferably, the lower core support has a combined stud connected to the internal threaded hole at the vertical end, and the upper core support is fixedly connected to the top of the combined stud. Both the upper and lower core supports are T-shaped structures, and the connection between the upper and lower core supports forms an I-shaped structure.

[0008] Preferably, a washer is fitted around the outside of the combined stud, the top surface of the washer is bonded to the bottom surface of the vertical end of the upper core support, and the perforated swivel extends into the auxiliary slot below the internal threaded hole of the vertical end of the lower core support.

[0009] Preferably, the lower rotating cylinder is disposed between the upper and lower adjusting turntables, the guide groove has an annular shape, the number of guide grooves corresponds one-to-one with the number of auxiliary connecting rods, and the three threaded semi-rings are arranged in a circular array along the center point of the adjusting turntable.

[0010] Preferably, the lower core support has notches on both sides of the vertical end that communicate with the auxiliary slots below the internal threaded holes of the vertical end of the lower core support. A limiting chuck is fixedly connected deep inside the notch. A fastening bolt is threadedly connected to the middle position of the limiting chuck and engages with the slots on the outer surface of the upper rotating cylinder. There are two fastening bolts in total on the left and right sides.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the adjustable core support fixing device for the casting mold, through the central connecting shaft, lower rotating cylinder, adjusting turntable, guide groove, short column, auxiliary connecting rod, and threaded half-ring, facilitates the installation of the core support structure, composed of the lower and upper core supports, onto the mold body. With the assistance of fastening bolts, the adjustable threaded fixing structure, consisting of the central connecting shaft, lower rotating cylinder, adjusting turntable, guide groove, short column, auxiliary connecting rod, and threaded half-ring, adapts to different sizes of threaded slots, assisting the core support structure in achieving fixed installation. This reduces the limitations imposed by the previous use of threaded components for core support fixing, and improves the efficiency of actual core support structure installation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the lower core support of this utility model;

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A;

[0016] Figure 4 This utility model Figure 2 A schematic diagram of the structure at point B;

[0017] Figure 5 This is a schematic diagram of the threaded semi-ring arrangement structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the upper and lower arrangement structure of the adjusting turntable of this utility model.

[0019] In the diagram: 1. Mold body; 2. Lower core support; 3. Upper rotating cylinder; 4. Central connecting shaft; 5. Lower rotating cylinder; 6. Adjusting turntable; 7. Guide groove; 8. Short column; 9. Auxiliary connecting rod; 10. Threaded half ring; 11. Upper core support; 12. Notch; 13. Limiting chuck; 14. Fastening bolt; 15. Rotary head with hole; 16. Combination stud; 17. Washer. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-6 This utility model provides a technical solution:

[0022] An adjustable core support fixing device for a casting mold includes a mold body 1. A lower core support 2 is provided at the top center of the mold body 1. An upper rotating cylinder 3 is rotatably connected to the inner side of the vertical end of the lower core support 2. A central connecting shaft 4 is fixedly connected to the bottom of the upper rotating cylinder 3, passing through the lower core support 2. Two adjusting turntables 6 and a lower rotating cylinder 5 are fixedly connected to the outside of the central connecting shaft 4 from top to bottom. Guide grooves 7 are provided at both the upper and lower ends of the adjusting turntables 6. A short column 8 is slidably connected to the inner side of the guide groove 7. An auxiliary connecting rod 9 is fixedly connected to the end of the short column 8 away from the deep interior of the guide groove 7. A threaded half-ring 10 extending into the mold body 1 with a pre-reserved threaded groove is fixedly connected to the outside of the auxiliary connecting rod 9. A perforated rotating head 15 is fixedly connected to the top of the upper rotating cylinder 3.

[0023] The lower core support 2 has a combined stud 16 internally threaded into its vertical end. The upper core support 11 is fixedly connected to the top of the combined stud 16. Both the upper core support 11 and the lower core support 2 have a "T"-shaped structure. The connection between the upper core support 11 and the lower core support 2 forms an "I"-shaped structure. This structure allows the core support to be independently detachable during actual use, reducing wear caused by using a one-piece design. A washer 17 is fitted around the combined stud 16. The top surface of the washer 17 is bonded to the bottom surface of the vertical end of the upper core support 11. A perforated rotating head 15 extends into an auxiliary slot below the internal threaded hole of the vertical end of the lower core support 2. After the upper core support 11 and the lower core support 2 are combined, the washer 17 provides auxiliary sealing to the connection, improving the tightness of the connection. The lower rotating cylinder 5 is positioned between the upper and lower core supports. Between the adjusting turntables 6, the guide grooves 7 are ring-shaped, and the number of guide grooves 7 corresponds one-to-one with the number of auxiliary connecting rods 9. Three threaded half-rings 10 are arranged in a ring array along the center point of the adjusting turntable 6. Through the above structure, the threaded half-rings 10 can achieve synchronous tension adjustment so that the core support can be fitted and installed. The left and right sides of the vertical end of the lower core support 2 are provided with notches 12 that communicate with the auxiliary hole groove below the internal threaded hole of the vertical end of the lower core support 2. A limiting chuck 13 is fixedly connected deep inside the notch 12. The middle position of the limiting chuck 13 is threadedly connected with a fastening bolt 14 that engages with the hole groove on the outer surface of the upper rotating cylinder 3. There are two fastening bolts 14 in total. The mutual cooperation between the fastening bolts 14 and the hole groove on the outer surface of the upper rotating cylinder 3 can play the role of assisting in limiting the threaded fixing structure after the tension adjustment is in place.

[0024] Workflow: Before using the casting mold, the core support needs to be fixed in place. First, tighten the bolts 14 outwards to remove their restriction on the upper rotating cylinder 3. Based on the specific dimensions of the threaded groove inside the mold body 1, insert the tool with a hexagonal plug into the vertical end of the lower core support 2, so that the end of the tool is inserted into the perforated rotating head 15. Then, rotate the perforated rotating head 15 using the tool. This will cause the central connecting shaft 4, the lower rotating cylinder 5, and the adjusting turntable 6 to rotate relative to each other. Multiple short columns 8 will then be simultaneously stretched outwards through the auxiliary connecting rod 9, causing multiple threaded half-rings 10 to change the gap between them. At this time, the device can adjust the gaps of multiple threads. The threaded half-ring 10 of various sizes serves as a threaded fastener, enabling the core support to have an adjustable size during the actual fixed assembly onto the mold body 1, thus improving the adaptability of the core support during installation. After the size is adjusted to the correct position, the fastening bolt 14 is tightened towards the inside of the notch 12 to fix the upper rotating cylinder 3 after adjustment, allowing the lower core support 2 to be pre-installed onto the mold body 1. Then, the combined stud 16 is screwed into the threaded slot reserved inside the vertical end of the lower core support 2, and the upper core support 11 and the lower core support 2 are combined and connected together to form a complete core support structure. The core support can then be fixedly installed, accelerating the progress of subsequent casting work.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable core-brace fixing device for a casting mold, comprising a mold body (1), characterized in that: The mold body (1) has a lower core support (2) at the top center. The upper rotating cylinder (3) is rotatably connected to the inner side of the vertical end of the lower core support (2). The bottom of the upper rotating cylinder (3) is fixedly connected to a central connecting shaft (4) that passes through the lower core support (2). The outer side of the central connecting shaft (4) is fixedly connected to two adjusting turntables (6) and a lower rotating cylinder (5) from top to bottom. The upper and lower ends of the adjusting turntables (6) are provided with guide grooves (7). The inner side of the guide grooves (7) is slidably connected to a short column (8). The end of the short column (8) that is far from the inside of the guide groove (7) is fixedly connected to an auxiliary connecting rod (9). The outer side of the auxiliary connecting rod (9) is fixedly connected to a threaded half ring (10) that extends into the mold body (1) with a reserved threaded groove. The top of the upper rotating cylinder (3) is fixedly connected to a rotating head with a hole (15).

2. An adjustable core support fixture for a casting mold as defined in claim 1, wherein: The lower core support (2) has a combined stud (16) connected to the internal threaded hole at its vertical end. The upper core support (11) is fixedly connected to the top of the combined stud (16). The upper core support (11) and the lower core support (2) are both "T" shaped structures. The connection between the upper core support (11) and the lower core support (2) forms an "I" shaped structure.

3. An adjustable core support fixture for a casting mold as defined in claim 2 wherein: The combined stud (16) is fitted with a washer (17) on the outside. The top surface of the washer (17) is bonded to the bottom surface of the vertical end of the upper core support (11). The perforated swivel (15) extends into the auxiliary slot below the internal threaded hole of the vertical end of the lower core support (2).

4. The adjustable core support fixing device for a casting mold according to claim 1, characterized in that: The lower rotating cylinder (5) is positioned between the upper and lower adjusting discs (6). The guide groove (7) has a ring-shaped structure. The number of guide grooves (7) corresponds one-to-one with the number of auxiliary connecting rods (9). The three threaded semi-rings (10) are arranged in a ring array along the center point of the adjusting disc (6).

5. The adjustable core support fixing device for a casting mold according to claim 1, characterized in that: The lower core support (2) has openings (12) on the left and right sides of its vertical end, which are connected to the auxiliary slots below the internal threaded holes of the lower core support (2). A limiting chuck (13) is fixedly connected deep inside the opening (12). A fastening bolt (14) is threadedly connected to the middle position of the limiting chuck (13) and engages with the slots on the outer surface of the upper rotating cylinder (3). There are two fastening bolts (14) on the left and right sides.

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