Clamping jaw mechanism of gear ring sand core
By designing a jaw mechanism including hanging members, bottom hooks, vertical rods, guide sleeves and U-shaped notch, the problem of deformation and damage of the sand core during lifting and placement is solved, the stable handling and precise contact or separation of the sand core is achieved, and the casting accuracy is improved.
Patent Information
- Application Number
- CN202421937874.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-08-12
AI Technical Summary
During the lifting and placement of the sand core, the prior art is difficult to effectively reduce the contact damage between the sand core and the hook, resulting in deformation damage of the sand core, which in turn affects the casting accuracy of the inner wall of the gear.
A clamping mechanism of the ring gear sand core is designed, including hanging members, bottom hooks, vertical rods, guide sleeves and U-shaped notch. Through the synergy of these components, the stable handling, contact or separation of the sand core is achieved.
This technical solution achieves safe handling and precise contact or separation of the sand core by contacting the bottom surface of the sand core, assembles the guide sleeve and the guide rod, and assembles the U-shaped notch with a linear power piece, thereby reducing deformation damage of the sand core and improving casting accuracy.
Smart Images
Figure CN222570809U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of casting equipment, in particular to a clamping claw mechanism of a gear ring sand core. Background Art
[0002] Gears are important components in intelligent robots such as industrial manipulators, and some of the semi-finished products of gears are cast. The outer contour of the gear matches the shape in the sand box, and the inner contour of the gear requires a sand core.
[0003] There are many examples of assembling shell cores in sand molds. Its main function is to form the cavity in the casting by fixing the sand core in a specific position in the sand mold and then pouring. After the casting is completed, the sand core is wrapped in the casting and the cavity part in the casting is formed by breaking the sand core.
[0004] In actual operation, the sand core needs to be hoisted into the sand box. Each time each sand core is hoisted, the sand core and the hook need to have a fixed contact surface. The action of the hook and the sand core when they are in contact or separated also needs to be fixed. These are all to minimize the contact damage between the sand core and the hook. If the sand core is deformed and damaged, it will eventually deteriorate the casting accuracy of the inner wall of the gear. Utility Model Content
[0005] The problem to be solved by the utility model is to provide a jaw mechanism for a gear ring sand core, which is specially used for taking and placing the sand core. The guide sleeve is conducive to the linear guidance of the hanging component during movement. The U-shaped notch is conducive to the rapid disassembly and assembly and the clamping limit of the hanging component and the linear power component, and the linear power component drives the hanging component to achieve contact or separation with the sand core.
[0006] In order to solve the above problems, the utility model provides a clamping mechanism of a gear ring sand core. In order to achieve the above purpose, the technical solution adopted by the utility model to solve its technical problems is:
[0007] A clamping mechanism for a gear ring sand core comprises: a hanging component, which comprises a bottom hook and a vertical rod which are integrally connected in sequence from bottom to top, wherein the bottom hook and the vertical rod form an angle with each other, and the bottom hook can hook the bottom of the sand core; guide sleeves are integrally connected to both sides of the top of the vertical rod, and the guide sleeves can allow the guide rod to movably pass through, and the axial direction of the guide sleeve is parallel to the extension direction of the bottom hook; the top of the vertical rod is also provided with a concave U-shaped notch, and the U-shaped notch can be assembled with a linear power part; at least two hanging components are arranged in a mirror-symmetrical manner.
[0008] The beneficial effect of adopting the above technical solution is: this technical solution designs a clamping claw hanging structure specially used for taking and placing sand cores. First, the bottom hook is used to contact the bottom surface of the sand core. The vertical rod allows the hanging member to extend upward, pass through the sand core, and emerge from the top of the sand core, which is convenient for the hanging member to be assembled with other power parts. Secondly, the guide sleeve can be assembled with the cylindrical guide rod, and has the freedom of sliding along the guide rod, which enables the bottom hook to have the ability to contact or separate the sand core, and this movement is carried out along the bottom surface of the sand core, and theoretically will not interfere with the sand core. For example, when the bottom hook is separated from the bottom surface of the sand core, a large piece of sand core material will not be dug out. Finally, the U-shaped notch can be assembled with various linear power parts, and the linear power parts are used to give the hanging member a force to contact or separate from the sand core. The top opening of the U-shaped notch facilitates the rapid disassembly and assembly with the power part, and the bottom surface of the U-shaped notch is also convenient for clamping the rod of the power part itself. As long as this rod is a step rod, it can be mutually limited with the U-shaped notch.
[0009] As a further improvement of the present invention, the extension length of the bottom hook is less than the length of the vertical rod, and the extension direction of the bottom hook forms an angle of 90° with the length direction of the vertical rod.
[0010] The beneficial effects of adopting the above technical solution are: the bottom hook extends horizontally, and the vertical rod extends vertically.
[0011] As a further improvement of the present invention, the dimension of the bottom hook in the extension direction is smaller than the dimension of the width of the bottom hook itself.
[0012] The beneficial effects of adopting the above technical solution are: this means that the bottom hook itself is relatively short and thick, which ensures the bending strength of the bottom hook, and also means that only a very small stroke is required for the bottom hook to be separated from the sand core.
[0013] As a further improvement of the utility model, the U-shaped notch includes a pair of mutually parallel side walls and a concave curved surface with a central angle of 180°; the U-shaped notch is half-surrounded by U-shaped convex ribs.
[0014] The beneficial effect of adopting the above technical solution is that the U-shaped convex rib is equivalent to thickening the material around the U-shaped notch without blocking the top opening of the U-shaped notch.
[0015] As a further improvement of the present invention, the protruding direction of the U-shaped convex rib is parallel to the axial direction of the guide sleeve, and one side of the trajectory of the U-shaped convex rib itself is the inner wall contour of the U-shaped notch.
[0016] The beneficial effect of adopting the above technical solution is that the U-shaped convex rib gives a circle around the U-shaped notch a stronger structural strength, making it easier to withstand the impact force of the linear power component.
[0017] As a further improvement of the present invention, the side of the U-shaped convex rib's own trajectory away from the U-shaped notch has an inner fillet.
[0018] The beneficial effect of adopting the above technical solution is that the fillet can reduce stress concentration and further enhance the structural strength there.
[0019] As a further improvement of the present invention, the two guide sleeves are arranged on both sides of the U-shaped notch in a mirror-symmetrical manner.
[0020] The beneficial effects of adopting the above technical solution are: overall symmetrical distribution, which makes the force levels of the two guide sleeves relatively close, and the overall movement of the hanging component is not easy to be skewed or stuck.
[0021] As a further improvement of the present invention, the axial length of a single guide sleeve is not less than the thickness of the bottom hook or the vertical rod.
[0022] The beneficial effects of adopting the above technical solution are: the axial length of the guide sleeve is relatively long, so the guiding effect is good when matched with the guide rod, and the overall movement of the hanging component is not easy to be skewed or stuck.
[0023] As a further improvement of the present invention, the inner diameter of the guide sleeve is not less than the width of the vertical rod.
[0024] The beneficial effect of adopting the above technical solution is that the inner diameter of the guide sleeve is relatively large, so when matched with a guide rod of the same specification, the load-bearing capacity of the overall hanging component is relatively excellent.
[0025] As a further improvement of the present invention, when the two hanging components are arranged in mirror symmetry, the bottom hooks of the two hanging components extend in opposite directions.
[0026] The beneficial effects of adopting the above technical solution are: when the two hanging components are away from each other, the sand core is contacted and clamped; when the two hanging components are close to each other, the sand core is released. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 It is a three-dimensional diagram of an embodiment of the utility model;
[0029] Figure 2 It is an application schematic diagram of an implementation mode of the utility model;
[0030] Figure 3 It is an application schematic diagram of an implementation mode of the utility model.
[0031] 3-lower sand core; 4-upper sand core; 6-hook piece; 61-bottom hook; 62-vertical rod; 63-guide sleeve; 64-U-shaped notch; 65-U-shaped convex rib. DETAILED DESCRIPTION
[0032] The following is a further detailed description of the present invention in conjunction with specific embodiments:
[0033] In order to achieve the purpose of the utility model, a clamping mechanism of a gear ring sand core includes: a hanging component 6, which includes a bottom hook 61 and a vertical rod 62 which are integrally connected in sequence from bottom to top, the bottom hook 61 and the vertical rod 62 form an angle with each other, and the bottom hook 61 can hook the bottom of the sand core; guide sleeves 63 are integrally connected to both sides of the top of the vertical rod 62, and the guide sleeves 63 can allow the guide rod to move through, and the axial direction of the guide sleeve 63 is parallel to the extension direction of the bottom hook 61; the top of the vertical rod 62 is also provided with a concave U-shaped notch 64, and the U-shaped notch 64 can be assembled with a linear power part; at least two hanging components 6 are arranged in mirror symmetry.
[0034] A linear power component is any power component that can output linear reciprocating motion, such as Figure 2 , Figure 3 As shown, the sand core includes an upper sand core 3 and a lower sand core 4 , and the hanging member 6 hooks the bottom surface of the lower sand core 3 with a bottom hook 61 .
[0035] The beneficial effect of adopting the above technical solution is: this technical solution designs a clamping claw hanging structure specially used for taking and placing sand cores. First, the bottom hook is used to contact the bottom surface of the sand core. The vertical rod allows the hanging member to extend upward, pass through the sand core, and emerge from the top of the sand core, which is convenient for the hanging member to be assembled with other power parts. Secondly, the guide sleeve can be assembled with the cylindrical guide rod, and has the freedom of sliding along the guide rod, which enables the bottom hook to have the ability to contact or separate the sand core, and this movement is carried out along the bottom surface of the sand core, and theoretically will not interfere with the sand core. For example, when the bottom hook is separated from the bottom surface of the sand core, a large piece of sand core material will not be dug out. Finally, the U-shaped notch can be assembled with various linear power parts, and the linear power parts are used to give the hanging member a force to contact or separate from the sand core. The top opening of the U-shaped notch facilitates the rapid disassembly and assembly with the power part, and the bottom surface of the U-shaped notch is also convenient for clamping the rod of the power part itself. As long as this rod is a step rod, it can be mutually limited with the U-shaped notch.
[0036] In some other embodiments of the present invention, the extension length of the bottom hook 61 is less than the length of the vertical rod 62 , and the extension direction of the bottom hook 61 forms an angle of 90° with the length direction of the vertical rod 62 .
[0037] The beneficial effects of adopting the above technical solution are: the bottom hook extends horizontally, and the vertical rod extends vertically.
[0038] In some other embodiments of the present invention, the dimension of the bottom hook 61 in the extension direction is smaller than the width of the bottom hook 61 itself.
[0039] The beneficial effects of adopting the above technical solution are: this means that the bottom hook itself is relatively short and thick, which ensures the bending strength of the bottom hook, and also means that only a very small stroke is required for the bottom hook to be separated from the sand core.
[0040] In some other embodiments of the present invention, the U-shaped notch 64 includes a pair of mutually parallel side walls and a concave curved surface with a central angle of 180°; the U-shaped notch 64 is half-surrounded by a U-shaped convex rib 65 .
[0041] The beneficial effects of adopting the above technical solution are: this means that the bottom hook itself is relatively short and thick, which ensures the bending strength of the bottom hook, and also means that only a very small stroke is required for the bottom hook to be separated from the sand core.
[0042] In other embodiments of the present invention, the protruding direction of the U-shaped rib 65 is parallel to the axial direction of the guide sleeve 63 , and one side of the trajectory of the U-shaped rib 65 itself is the inner wall contour of the U-shaped notch 64 .
[0043] The beneficial effect of adopting the above technical solution is that the U-shaped convex rib is equivalent to thickening the material around the U-shaped notch without blocking the top opening of the U-shaped notch.
[0044] In some other embodiments of the present invention, the side of the U-shaped rib 65 that is away from the U-shaped notch 64 has an inner fillet.
[0045] The beneficial effect of adopting the above technical solution is that the fillet can reduce stress concentration and further enhance the structural strength there.
[0046] In other embodiments of the present invention, two guide sleeves 63 are arranged on both sides of the U-shaped notch 64 in a mirror-symmetrical manner.
[0047] The beneficial effects of adopting the above technical solution are: overall symmetrical distribution, which makes the force levels of the two guide sleeves relatively close, and the overall movement of the hanging component is not easy to be skewed or stuck.
[0048] In some other embodiments of the present invention, the axial length of a single guide sleeve 63 is not less than the thickness of the bottom hook 61 or the vertical rod 62 .
[0049] The beneficial effects of adopting the above technical solution are: the axial length of the guide sleeve is relatively long, so the guiding effect is good when matched with the guide rod, and the overall movement of the hanging component is not easy to be skewed or stuck.
[0050] In some other embodiments of the present invention, the inner diameter of the guide sleeve 63 is not less than the width of the vertical rod 62 .
[0051] The beneficial effect of adopting the above technical solution is that the inner diameter of the guide sleeve is relatively large, so when matched with a guide rod of the same specification, the load-bearing capacity of the overall hanging component is relatively excellent.
[0052] like Figure 2 As shown, in some other embodiments of the present invention, when the two hanging components 6 are arranged in mirror symmetry, the bottom hooks 61 of the two hanging components 6 extend in opposite directions.
[0053] The beneficial effects of adopting the above technical solution are: when the two hanging components are away from each other, the sand core is contacted and clamped; when the two hanging components are close to each other, the sand core is released.
[0054] Figure 2 It is an oblique perspective from bottom to top. Figure 3 It is an oblique perspective from top to bottom. Figure 2 and Figure 3 Each of the two hanging components 6 is included.
[0055] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A clamping mechanism for a gear ring sand core, characterized in that: include: The hanging member comprises, from bottom to top, a bottom hook and a vertical rod which are connected in sequence, wherein the bottom hook and the vertical rod form an angle with each other, and the bottom hook can hook the bottom of the sand core; The top two sides of the vertical rod are respectively connected with guide sleeves, the guide sleeves can allow the guide rod to movably pass through, and the axial direction of the guide sleeves is parallel to the extension direction of the bottom hook; The top of the vertical rod is also provided with a concave U-shaped notch, and the U-shaped notch can be assembled with a linear power member; At least two hanging components are arranged in mirror symmetry.
2. The clamping mechanism of the gear ring sand core according to claim 1, characterized in that: The extension length of the bottom hook is less than the length of the vertical rod, and the extension direction of the bottom hook forms an angle of 90° with the length direction of the vertical rod.
3. The clamping mechanism of the gear ring sand core according to claim 1, characterized in that: The dimension of the bottom hook in the extension direction is smaller than the width of the bottom hook itself.
4. The clamping mechanism of the gear ring sand core according to claim 1, characterized in that: The U-shaped notch includes a pair of side walls parallel to each other, and also includes a concave surface with a central angle of 180°; The U-shaped notch is half-surrounded by a U-shaped convex rib.
5. The clamping mechanism of the gear ring sand core according to claim 4, characterized in that: The protruding direction of the U-shaped convex rib is parallel to the axial direction of the guide sleeve, and one side of the trajectory of the U-shaped convex rib itself is the inner wall contour of the U-shaped notch.
6. The clamping mechanism of the gear ring sand core according to claim 5, characterized in that: The side of the U-shaped convex rib's own trajectory away from the U-shaped notch has an inner fillet.
7. The clamping mechanism of the gear ring sand core according to claim 1, characterized in that: The two guide sleeves are arranged mirror-symmetrically on both sides of the U-shaped notch.
8. The clamping mechanism of the gear ring sand core according to claim 1, characterized in that: The axial length of a single guide sleeve shall not be less than the thickness of the bottom hook or vertical rod.
9. The clamping mechanism of the gear ring sand core according to claim 1, characterized in that: The inner diameter of the guide sleeve is not less than the width of the vertical rod.
10. The clamping mechanism of the gear ring sand core according to claim 1, characterized in that: When the two hanging components are arranged in mirror symmetry, the bottom hooks of the two hanging components extend in opposite directions.