Quick-release clamp for wax patterns in precision casting

Abstract

This utility model relates to the technical field of wax model making tools, specifically disclosing a quick-release clamp for wax models used in precision casting. It includes a hook, a connecting tube, and a wax model. The connecting tube is located outside the hook, with a sealing annular plate at its upper end and a mounting annular plate at its lower end. A spring is located between the sealing and mounting annular plates, positioned outside the connecting tube and protected by a sealing sleeve. The lower end of the spring is mounted on the mounting annular plate, and its upper end connects to the sealing annular plate. A slot is located at the top of the connecting tube, and a connecting rod is located inside the wax model. The lower end of the connecting rod has a positioning groove, and a locking post on the outer side of the connecting rod is adapted to the slot. A positioning post is located at the top of the hook, resting against the positioning groove. The locking post engages with the slot, connecting the connecting tube to the wax model. This utility model provides quick and accurate loading and unloading, simple operation, saves time and effort, effectively improves production efficiency, avoids tool damage caused by slurry seepage, and extends tool life.

Description

Technical Field

[0001] This utility model relates to the technical field of wax model making tools, specifically to a quick-release clamp for wax models used in precision casting. Background Technology

[0002] With economic development and the improvement of investment casting technology, various large investment casting parts have emerged. In investment casting, hooks are tools used to connect the wax model for easy shell removal.

[0003] Current hook structures are diverse, and when connecting to wax molds, most use threads or I-shaped nuts, which are cumbersome to operate, time-consuming and labor-intensive to install and remove, resulting in low production efficiency. Furthermore, during the shell-making process, the slurry may seep into the thread gaps, and after drying and hardening, it increases the friction and interlocking force between the threads, requiring greater torque when tightening, thus increasing the risk of damaging the threads, causing tool damage, reducing service life, and failing to meet production needs. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a quick-release clamp for wax molds used in precision casting. It allows for fast and accurate loading and unloading, is simple to operate, saves time and effort, effectively improves production efficiency, avoids tool damage caused by slurry seepage, extends tool life, and meets production needs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A quick-release clamp for wax models used in precision casting includes a hook, a connecting tube, and a wax model. The hook has a connecting tube outside it, with a sealing annular plate at its upper end and a mounting annular plate at its lower end. A spring is located between the sealing annular plate and the mounting annular plate, positioned outside the connecting tube and protected by a sealing sleeve. The lower end of the spring is mounted on the mounting annular plate, and the upper end of the spring is connected to the sealing annular plate, ensuring the sealing annular plate always tends to move upwards towards the wax model. The top of the connecting tube has a slot, and a connecting rod is located inside the wax model. A locking post on the outer side of the connecting rod is adapted to the slot, engaging with the slot to detachably connect the upper end of the connecting tube to the wax model. The lower end of the connecting rod has a positioning groove, and the top of the hook has a positioning pin. When the locking post engages with the slot, the positioning pin rests against the positioning groove.

[0007] Preferably, the lower end of the wax mold has a cavity, the connecting rod is set in the cavity, there are two locking posts, which are respectively set on both sides of the connecting rod, the connecting tube is hollow and has an opening at the top, there are two locking slots, which are respectively set on both sides of the opening, and the connecting rod can be inserted into the connecting tube through the opening, so that the positioning post abuts against the positioning slot.

[0008] Preferably, the slot is J-shaped, and when the locking pin is inserted into the slot, the locking pin is fixed in the slot by rotating the connecting pipe.

[0009] Preferably, the top of the connecting rod is provided with an outwardly extending stepped surface, and when the locking post is connected to the locking groove, the opening of the connecting tube abuts against the stepped surface.

[0010] Preferably, the sealing annular plate is located below the cavity.

[0011] Preferably, the diameter of the sealing ring plate is larger than the diameter of the wax mold.

[0012] The beneficial effects of this utility model are as follows: A connecting tube is provided outside the hook; a sealing annular plate is provided at the upper end of the connecting tube; an mounting annular plate is provided at the lower end of the connecting tube; a spring is provided between the sealing annular plate and the mounting annular plate; the spring is positioned outside the connecting tube and is covered with a sealing protective sleeve; the sealing protective sleeve effectively protects the spring, preventing debris and flying objects from adhering to it, thus extending the spring's service life and maintaining its performance; the lower end of the spring is mounted on the mounting annular plate, and the upper end of the spring is connected to the sealing annular plate, ensuring that the sealing annular plate always has an upward tendency to move towards the wax mold. The sealing annular plate prevents the seepage of slurry, avoiding the problems caused by slurry seepage. Tool damage is minimized, extending tool life and reducing costs to meet production demands. The connecting tube has a slot at its top, and a connecting rod is located inside the wax model. A locking post on the outside of the connecting rod fits into the slot, allowing for a detachable connection between the upper end of the connecting tube and the wax model. This enables quick and accurate loading and unloading between the hook and the wax model, simplifying operation, saving time and effort, and effectively improving production efficiency. The lower end of the connecting rod has a positioning groove, and the top of the hook has a positioning post. When the locking post engages with the slot, the positioning post rests against the positioning groove. The alignment between the positioning groove and the top of the hook ensures accurate positioning and improves the stability of the connection between the hook and the wax model. Attached Figure Description

[0013] Figure 1 : This is a structural schematic diagram of an embodiment of the present utility model;

[0014] Figure 2 This is an exploded structural diagram of an embodiment of the present invention;

[0015] Figure 3 : This is a schematic diagram of the wax model from a bottom view according to an embodiment of the present invention;

[0016] Figure 4 This is a cross-sectional view of the hook and connecting tube according to an embodiment of the present invention.

[0017] Explanation of the symbols in the attached diagram: 10-Hook, 11-Positioning post, 20-Connecting tube, 21-Opening, 22-Slot, 23-Sealing annular plate, 24-Mounting annular plate, 25-Spring, 26-Sealing protective sleeve, 30-Wax model, 31-Cavity, 32-Connecting rod, 33-Slotting post, 34-Step surface, 35-Positioning groove. Detailed Implementation

[0018] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments:

[0019] This embodiment: as follows Figure 1-4 As shown, a quick-release clamp for wax molds used in precision casting includes a hook 10, a connecting tube 20, and a wax mold 30. The hook 10 is provided with a connecting tube 20. The upper end of the connecting tube 20 is provided with a sealing annular plate 23, which is located below the cavity 31. The diameter of the sealing annular plate 23 is larger than the diameter of the wax mold 30. The lower end of the connecting tube 20 is provided with an mounting annular plate 24. A spring 25 is provided between the sealing annular plate 23 and the mounting annular plate 24. The spring 25 is located outside the connecting tube 20, and a sealing protective sleeve 26 is provided outside the spring 25. The sealing protective sleeve 26 effectively protects the spring 25, preventing garbage and flying debris from sticking to the spring 25, extending the service life of the spring 25 and maintaining the performance of the spring 25.

[0020] The lower end of the spring 25 is mounted on the mounting ring plate 24, and the upper end of the spring 25 is connected to the sealing ring plate 23, so that the sealing ring plate 23 always has an upward tendency to move towards the wax mold 30, keeping the connection between the connecting pipe 20 and the wax mold 30 sealed, preventing external factors such as slurry from affecting the stability of the connection. At the same time, the sealing ring plate 23 prevents slurry from falling onto the hook 10, effectively preventing tool damage caused by slurry seepage, extending the tool's lifespan.

[0021] The top of the connecting tube 20 is provided with a slot 22, which is J-shaped. The lower end of the wax model 30 is provided with a cavity 31, and a connecting rod 32 is provided inside the cavity 31. The top of the connecting rod 32 is provided with an outwardly extending stepped surface 34, and the lower end of the connecting rod 32 is provided with a positioning groove 35. Two locking posts 33 are provided on the outer side of the connecting rod 32, which are adapted to the slot 22. The connecting tube 20 is hollow, with an opening 21 at its top. Two slots 22 are provided, one on each side of the opening 21. 2. The connecting tube 20 can be inserted through the opening 21, so that the positioning post 11 abuts against the positioning groove 35. Through the docking of the positioning groove 35 with the top of the hook 10, the accuracy of the positioning docking can be effectively achieved. At the same time, the stability of the connection between the hook 10 and the wax model 30 is improved. The locking post 33 is inserted into the locking groove 22, and the opening 21 of the connecting tube 20 abuts against the step surface 34, which improves the sealing of the connection and avoids the seepage of slurry. By rotating the connecting tube 20, the locking post 33 is fixed in the locking groove 22, so that the upper end of the connecting tube 20 is detachably connected to the wax model 30.

[0022] By aligning the opening 21 of the connecting tube 20 with the bottom of the connecting rod 32, quick docking can be achieved. After docking, simply rotate the connecting tube 20. When the top of the hook 10 abuts against the positioning groove 35, it means that the position of the slot 22 is aligned with the locking post 33. By rotating the connecting tube 20, the locking post 33 can be quickly inserted into the slot 22. The loading and unloading can be completed in just one second, enabling quick loading and unloading between the hook 10 and the wax mold 30. The operation is simple, fast, time-saving, and labor-saving, effectively improving production efficiency.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A wax pattern quick change fixture for use in precision casting comprising a hook, a connecting tube and a wax pattern, characterized in that: The hook has a connecting tube, with a sealing ring plate at the upper end and a mounting ring plate at the lower end. A spring is located between the sealing ring plate and the mounting ring plate, outside the connecting tube and protected by a sealing sleeve. The lower end of the spring is mounted on the mounting ring plate, and the upper end is connected to the sealing ring plate, ensuring that the sealing ring plate always tends to move upwards towards the wax model. The top of the connecting tube has a slot, and the wax model has a connecting rod. A locking post on the outside of the connecting rod fits into the slot, allowing the upper end of the connecting tube to be detachably connected to the wax model. The lower end of the connecting rod has a positioning groove, and the top of the hook has a positioning post. When the locking post is engaged in the slot, the positioning post rests against the positioning groove.

2. The rapid wax pattern loading and unloading clamp for precision casting according to claim 1, characterized in that: The lower end of the wax model has a cavity, the connecting rod is set in the cavity, there are two locking posts, which are respectively set on both sides of the connecting rod, the connecting tube is hollow and has an opening at the top, there are two locking slots, which are respectively set on both sides of the opening, the connecting rod can be inserted into the connecting tube through the opening, so that the positioning post abuts against the positioning slot.

3. The rapid wax pattern loading and unloading clamp for precision casting of claim 1, wherein: The slot is J-shaped. When the locking pin is inserted into the slot, the locking pin is fixed in the slot by rotating the connecting pipe.

4. The rapid wax pattern loading and unloading clamp for precision casting of claim 2, wherein: The top of the connecting rod has an outwardly extending stepped surface. When the locking pin is connected to the locking slot, the opening of the connecting tube abuts against the stepped surface.

5. The rapid wax pattern loading and unloading clamp for precision casting of claim 2, wherein: The sealing annular plate is located below the cavity.

6. The rapid wax pattern set-up clamp for precision casting of claim 1, wherein: The diameter of the sealing ring plate is larger than the diameter of the wax mold.

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