Embedded nut casting template

Abstract

The utility model provides an embedded nut casting template, which belongs to the technical field of machining, aims to solve the problems of special structure, high reprocessing difficulty after cold heading production and low production efficiency of an embedded nut, and comprises a lower template, the cross section of the lower template is U-shaped, two ends of the top of the lower template are provided with inner folds, and an upper template is arranged between the two inner folds. A movable cavity is formed between the upper die plate and the lower die plate, two symmetrical middle plates are arranged in the movable cavity in a sliding mode, a plurality of casting grooves distributed in an array mode are formed among the upper die plate, the middle plates and the lower die plate, semicircular notches are formed in the edges of the middle plates, and the semicircular notches in the two middle plates are combined to form a circular groove to serve as the middle section of the casting groove.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and more specifically, particularly relates to a pre-embedded nut casting template. Background Art

[0002] Nuts are commonly used connectors in mechanical equipment and are used in conjunction with bolts, screws, etc. Nuts are generally produced by cold heading, cutting steel bars and hot pressing them into hexagonal blocks, which are then tapped. However, some embedded nuts have different usage scenarios and special nut structures and require injection molding, such as publication number CN219605781 U, a new type of embedded nut. The nut is embedded in other mechanical parts and therefore has flower teeth and hexagonal teeth of different diameters. Nuts produced only by cold heading are reprocessed, which has low production efficiency and cumbersome processing steps, and is not conducive to mass production.

[0003] Therefore, in view of this, the existing structure and defects are studied and improved, and a pre-embedded nut casting template is provided to achieve a more practical purpose. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a pre-embedded nut casting template to solve the problems that the pre-embedded nut has a special structure, is too complicated to process after cold heading, and has low production efficiency.

[0005] The purpose and effect of the embedded nut casting template of the utility model are achieved by the following specific technical means:

[0006] A pre-embedded nut casting template includes a lower template, the cross-section of the lower template is U-shaped, the two ends of the top of the lower template are provided with inner folds, an upper template is provided between the two inner folds, an active cavity is formed between the upper template and the lower template, two symmetrical middle plates are slidably arranged in the active cavity, a plurality of array-distributed casting grooves are formed between the upper template, the middle plate and the lower template, a semicircular notch is opened at the edge of the middle plate, and the semicircular notches on the two middle plates are combined to form a circular groove as the middle section of the casting groove.

[0007] Furthermore, a tooth cavity is formed on the lower template, and a top groove is formed on the upper template. The corresponding tooth cavity, circular groove and top groove form a casting groove, and the sizes of the tooth cavity and the top groove are larger than those of the circular groove.

[0008] Furthermore, a center platform is provided at the axis center of the flower tooth cavity.

[0009] Furthermore, limiting grooves are opened on both sides of the lower template, limiting blocks are welded on the side ends of the middle plate, the limiting blocks are slidably set in the limiting grooves, bolts are passed through the side walls of the lower template, the bolts are threadedly connected to the lower template, and the ends of the bolts are rotatably connected to the limiting blocks.

[0010] Furthermore, a positioning shaft is provided at the bottom of the upper template, a positioning hole corresponding to the positioning shaft is opened on the lower template, and a positioning groove matching the positioning shaft is opened on the side wall of the middle plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The upper template, the middle plate and the lower template are layered, and the small diameter of the nut is formed by the circular groove of the middle plate. After forming, the two middle plates are slid to separate the semicircular notches from each other, so that the embedded nut can be easily taken out. The embedded nuts are produced by casting, which brings convenience to the production of special nuts with different diameters that are formed in one piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a stereoscopic diagram of a pre-embedded nut casting template.

[0014] Figure 2 The utility model discloses an exploded view of a pre-embedded nut casting template.

[0015] Figure 3 The utility model is a cross-sectional view of a pre-embedded nut casting template.

[0016] Figure 4 It is a structural schematic diagram of the upper template in the utility model.

[0017] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0018] 1. Lower template; 2. Inward fold; 3. Upper template; 4. Movable cavity; 5. Middle plate; 6. Limiting slide groove; 7. Limiting block; 8. Bolt; 9. Positioning hole; 10. Positioning shaft; 11. Flower tooth cavity; 12. Middle platform; 31. Top groove; 51. Semicircular notch; 52. Positioning groove. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0020] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example:

[0023] As attached Figure 1 To Attachment Figure 4 As shown:

[0024] The utility model provides a pre-embedded nut casting template, comprising a lower template 1, the cross section of the lower template 1 is U-shaped, inner folds 2 are arranged at both ends of the top of the lower template 1, an upper template 3 is arranged between the two inner folds 2, an active cavity 4 is formed between the upper template 3 and the lower template 1, two symmetrical middle plates 5 are slidably arranged in the active cavity 4, a plurality of array-distributed casting grooves are formed between the upper template 3, the middle plate 5 and the lower template 1, a semicircular notch 51 is opened at the edge of the middle plate 5, and the semicircular notches 51 on the two middle plates 5 are combined to form a circular groove as the middle section of the casting groove, such as Figure 3 As shown, the embedded nut to be produced in this embodiment has a smaller diameter in the middle than the diameters at the upper and lower ends, and is layered by an upper template 3, an intermediate plate 5 and a lower template 1. The small diameter of the nut is formed by a circular groove of the intermediate plate 5. After forming, the two intermediate plates 5 are slid to separate their semicircular notches 51 from each other, so that the embedded nut can be easily taken out, making it easier to take out the cast nut after it is cooled.

[0025] The lower template 1 has limited slots 6 on both sides, and the middle plate 5 has limited blocks 7 welded to the side ends. The limited blocks 7 are slidably arranged in the limited slots 6. The limited blocks 7 limit the movement range of the middle plate 5, and at the same time, the middle plate 5 can only move in a certain direction. Figure 3As shown in the figure, the lower template 1 slides left and right, and the side wall of the lower template 1 is penetrated by a bolt 8, which is threadedly connected to the lower template 1, and the end of the bolt 8 is rotatably connected to the limit block 7. The bolt 8 is tightened before adding the high-temperature molten metal to make the two middle plates 5 press against each other. After the nut is cooled and formed, the bolt 8 is rotated in the opposite direction to drive the middle plate 5 to slide, and the nut can be taken out after the two middle plates 5 are separated.

[0026] In this embodiment, a tooth cavity 11 is formed on the lower template 1, and a top groove 31 is formed on the upper template 3. The corresponding tooth cavity 11, circular groove and top groove 31 form a casting groove. The sizes of the tooth cavity 11 and the top groove 31 are both larger than the size of the circular groove. The nut formed by casting is the embedded nut in publication number CN219605781 U.

[0027] Among them, a center platform 12 is arranged at the axis center of the tooth cavity 11. After the nut is cooled and formed, an axial depression is formed at the position of the center platform 12, which is convenient for subsequent tapping.

[0028] Among them, a positioning shaft 10 is provided at the bottom of the upper template 3, a positioning hole 9 corresponding to the positioning shaft 10 is opened on the lower template 1, and a positioning groove 52 matching the positioning shaft 10 is opened on the side wall of the middle plate 5. The setting of the positioning shaft 10 facilitates early positioning when installing the upper template 3 to avoid skewness of the positions of the top groove 31, the circular groove and the flower tooth cavity 11.

[0029] When using:

[0030] Tighten the bolts 8 to make the two middle plates 5 close together, add hot molten metal into the casting tank, and after cooling, loosen the bolts 8 to move the middle plate 5, and then take out the nuts.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A pre-embedded nut casting template, characterized in that: The invention comprises a lower template (1), wherein the cross section of the lower template (1) is U-shaped, inner folds (2) are arranged at both ends of the top of the lower template (1), an upper template (3) is arranged between the two inner folds (2), an active cavity (4) is formed between the upper template (3) and the lower template (1), two symmetrical middle plates (5) are slidably arranged in the active cavity (4), a plurality of array-distributed casting grooves are formed between the upper template (3), the middle plates (5) and the lower template (1), a semicircular notch (51) is opened on the edge of the middle plate (5), and the semicircular notches (51) on the two middle plates (5) are combined to form a circular groove as the middle section of the casting groove.

2. The embedded nut casting template according to claim 1, characterized in that: The lower template (1) is provided with a tooth cavity (11), and the upper template (3) is provided with a top groove (31). The corresponding tooth cavity (11), the circular groove and the top groove (31) form a casting groove. The sizes of the tooth cavity (11) and the top groove (31) are both larger than those of the circular groove.

3. The embedded nut casting template according to claim 2, characterized in that: A center platform (12) is provided at the axis center of the tooth cavity (11).

4. The embedded nut casting template according to claim 1, characterized in that: The lower template (1) has limit slots (6) on both sides, the middle plate (5) is welded with a limit block (7) at the side end, the limit block (7) is slidably arranged in the limit slot (6), the side wall of the lower template (1) is penetrated by a bolt (8), the bolt (8) is threadedly connected to the lower template (1), and the end of the bolt (8) is rotatably connected to the limit block (7).

5. The embedded nut casting template according to claim 1, characterized in that: A positioning shaft (10) is provided at the bottom of the upper template (3), a positioning hole (9) corresponding to the positioning shaft (10) is provided on the lower template (1), and a positioning groove (52) matching the positioning shaft (10) is provided on the side wall of the middle plate (5).

Images