Bolt forming die

Abstract

The utility model belongs to the technical field of bolt production and processing, and particularly relates to a bolt forming die which comprises an upper die assembly and a lower die assembly, the upper die assembly and the lower die assembly are detachably connected through a fastener, the upper die assembly comprises a bolt rod upper die, a bolt head upper die and an upper outer die plate, and the lower die assembly comprises a bolt rod lower die and a bolt head lower die. Wherein the bolt head upper mold is detachably connected between the bolt rod upper mold and the upper outer mold plate through a fastener; the lower die assembly comprises a bolt rod lower die, a bolt head lower die and a lower outer die plate, the bolt head lower die is detachably connected between the bolt rod lower die and the lower outer die plate through a fastener, when bolts with different head shapes need to be produced, the whole bolt die does not need to be replaced, and the production efficiency is improved. And only the bolt head die including the bolt head upper die and the bolt head lower die needs to be replaced, and the bolt bar die including the bolt bar upper die and the bolt bar lower die does not need to be replaced, so that the manufacturing cost of the die is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt production and processing, and particularly relates to a bolt forming die. Background Art

[0002] Bolt: A mechanical part, a cylindrical threaded fastener that is matched with a nut. A type of fastener consisting of a head and a screw (a cylinder with external threads), which must be matched with a nut to fasten two parts with through holes. According to the shape of the head, there are hexagonal heads, round heads, square heads, countersunk heads, etc. Among them, the hexagonal head is the most commonly used.

[0003] The Chinese patent application number CN02252982.9 discloses a bolt forming die, including an upper die and a lower die, wherein the upper die has an outer sleeve, a cavity with a hexagonal inner hole is arranged in the center hole of the outer sleeve, the outer sleeve and the inner sleeve are connected by hot pressing, and there is a certain prestress between the two, and the lower die sleeve and the lower die cavity are connected by hot pressing, and there is a certain prestress between the two. The implementation die can be used to heat-form the head and the rod of the bolt at one time, the surface of the head is bright and beautiful, the surface quality far exceeds the national standard requirements, and the life of the die is greatly improved, which is 40-50 times that of ordinary bolt dies.

[0004] However, the bolt forming mold in the above prior art forms a bolt forming cavity due to the cooperation of the upper mold and the lower mold, but the head shape of the bolt formed by the mold is single. If bolts with other head shapes need to be produced, the entire upper mold and the lower mold need to be re-made, which will undoubtedly increase the manufacturing cost of the mold. For this reason, we have improved and designed a bolt forming mold. Utility Model Content

[0005] In view of the above-mentioned deficiencies existing in the prior art, the utility model provides a bolt forming die to solve the above-mentioned problems in the background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A bolt forming mold comprises an upper mold assembly and a lower mold assembly, wherein the upper mold assembly and the lower mold assembly are detachably connected via fasteners, wherein the upper mold assembly comprises an upper mold for a bolt rod, an upper mold for a bolt head, and an upper outer mold plate, wherein the mold for the bolt head is detachably connected between the upper mold for the bolt rod and the upper outer mold plate via fasteners; and the lower mold assembly comprises a lower mold for the bolt rod, a lower mold for the bolt head, and a lower outer mold plate, wherein the lower mold for the bolt head is detachably connected between the lower mold for the bolt rod and the lower outer mold plate via fasteners.

[0008] By adopting the above-mentioned structural design, the bolt forming mold includes an upper mold assembly and a lower mold assembly which are detachably connected to each other, wherein the structures of the upper mold assembly and the lower mold assembly are the same, wherein the upper mold assembly includes an upper mold for the bolt rod, an upper mold for the bolt head and an upper outer mold plate, and the lower mold assembly includes a lower mold for the bolt rod, a lower mold for the bolt head and a lower outer mold plate, so that the bolt rod mold and the bolt head mold can be detachably connected to each other to form a complete bolt mold together, and when it is necessary to produce bolts with different head shapes, it is not necessary to replace the entire bolt mold, but only to replace the bolt head mold including the mold on the bolt head and the lower mold on the bolt head, without replacing the bolt rod mold including the upper mold for the bolt rod and the lower mold for the bolt rod, thereby reducing the manufacturing cost of the mold.

[0009] Furthermore, a bolt rod forming cavity is provided on the bolt rod upper mold and the bolt rod lower mold, and the shape of the bolt rod forming cavity is a half bolt rod shape.

[0010] Furthermore, the surface of the bolt rod upper mold is also provided with an injection hole connected to the bolt rod molding cavity.

[0011] Furthermore, a bolt head forming cavity is provided on the bolt head upper mold and the bolt head lower mold, and the shape of the bolt head forming cavity is a half bolt head shape.

[0012] Furthermore, the upper outer formwork and the lower outer formwork are provided with corresponding threaded holes for connecting to each other, the cross-sectional shape of the upper outer formwork and the lower outer formwork is L-shaped, and the threaded holes are provided on the horizontal plate.

[0013] Furthermore, the side surface of the upper mold on the bolt rod, the side surface of the upper mold on the bolt head and the side surface of the upper outer mold plate are all provided with threaded through holes for connecting to each other.

[0014] Furthermore, there are two upper molds and upper outer molds on the bolt head, which are connected to both sides of the upper mold on the bolt rod, and there are two lower molds and lower outer molds on the bolt head, which are connected to both sides of the lower mold on the bolt rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The bolt forming mold includes an upper mold assembly and a lower mold assembly which are detachably connected to each other, wherein the upper mold assembly and the lower mold assembly have the same structure, wherein the upper mold assembly includes an upper mold for the bolt rod, an upper mold for the bolt head and an upper outer mold plate, and the lower mold assembly includes a lower mold for the bolt rod, a lower mold for the bolt head and a lower outer mold plate, so that the bolt rod mold and the bolt head mold are detachably connected to each other to form a complete bolt mold together, and when bolts with different head shapes need to be produced, there is no need to replace the entire bolt mold, but only to replace the bolt head mold including the mold on the bolt head and the lower mold on the bolt head, without replacing the bolt rod mold including the upper mold for the bolt rod and the lower mold for the bolt rod, thereby reducing the manufacturing cost of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a bolt forming mold of the utility model (viewing angle 1);

[0018] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of a bolt forming mold of the utility model (viewing angle 2);

[0019] Figure 3 It is a three-dimensional structural schematic diagram of an upper die assembly in an embodiment of a bolt forming die of the utility model;

[0020] The reference numerals in the drawings of the specification include:

[0021] An upper mold assembly (1), a lower mold assembly (2), a bolt rod upper mold (11), an injection hole (111), a bolt rod forming cavity (112), threaded through holes (113, 122, 132, 232), a bolt head upper mold (12), a bolt head forming cavity (121), an upper outer mold plate (13), threaded holes (131, 231), a bolt rod lower mold (21), a bolt head lower mold (22), and a lower outer mold plate (23). DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term 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, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1:

[0027] like Figure 1-3 Specifically, a bolt forming die comprises an upper die assembly 1 and a lower die assembly 2, wherein the upper die assembly 1 and the lower die assembly 2 are detachably connected by fasteners, the upper die assembly 1 comprises an upper die 11 for a bolt rod, an upper die 12 for a bolt head, and an upper outer die plate 13, wherein the die 12 for the bolt head is detachably connected between the upper die 11 for the bolt rod and the upper outer die plate 13 by fasteners; the lower die assembly 2 comprises a lower die 21 for a bolt rod, a lower die 22 for a bolt head, and a lower outer die plate 23, wherein the lower die 22 for the bolt head is detachably connected between the lower die 21 for the bolt rod and the lower outer die plate 23 by fasteners. The bolt forming mold includes an upper mold assembly 1 and a lower mold assembly 2 which are detachably connected to each other, wherein the upper mold assembly 1 and the lower mold assembly 2 have the same structure, wherein the upper mold assembly 1 includes a bolt rod upper mold 11, a bolt head upper mold 12 and an upper outer mold plate 13, and the lower mold assembly 2 includes a bolt rod lower mold 21, a bolt head lower mold 22 and a lower outer mold plate 23, so that the bolt rod mold and the bolt head mold are detachably connected to each other to form a complete bolt mold together. When bolts with different head shapes need to be produced, there is no need to replace the entire bolt mold, but only need to replace the bolt head mold including the bolt head mold 12 and the bolt head lower mold 22, without replacing the bolt rod mold including the bolt rod upper mold 11 and the bolt rod lower mold 21, thereby reducing the manufacturing cost of the mold.

[0028] In this example, a bolt rod forming cavity 112 is formed on the bolt rod upper mold 11 and the bolt rod lower mold 21 , and the shape of the bolt rod forming cavity 112 is a half bolt rod shape.

[0029] In this example, the surface of the bolt rod upper mold 11 is further provided with an injection hole 111 communicating with the bolt rod forming cavity 112 .

[0030] In this example, a bolt head forming cavity 121 is provided on the bolt head upper mold 12 and the bolt head lower mold 22, and the shape of the bolt head forming cavity 121 is a half bolt head shape. By adopting the above structural design, the shape of the bolt head forming cavity 121 is a half bolt head shape, and its cross-sectional shape can be designed into a hexagonal head, a round head, a square head, a countersunk head, etc. according to the shape of the bolt head.

[0031] In this example, the upper outer formwork 13 and the lower outer formwork 23 are provided with corresponding threaded holes 131, 231 for connection with each other, the cross-sectional shape of the upper outer formwork 13 and the lower outer formwork 23 is L-shaped, and the threaded holes are provided on the horizontal plate.

[0032] In this example, threaded through holes 113, 122, 132, 232 for connecting to each other are provided on the side surfaces of the upper mold 11 of the bolt rod, the side surfaces of the upper mold 12 of the bolt head, and the side surfaces of the upper outer mold plate 13.

[0033] In this example, there are two bolt head upper molds 12 and upper outer molds 13, connected to both sides of the bolt rod upper mold 11, and there are two bolt head lower molds 22 and lower outer molds 23, connected to both sides of the bolt rod lower mold 21. In this example, the fasteners are bolts or screws.

[0034] Working principle: When in use, first connect the two bolt head upper molds 12 and the two upper outer molds 13 to the two sides of the bolt rod upper mold 11 through fasteners, connect the two bolt head lower molds 22 and the two lower outer molds 23 to the two sides of the bolt rod lower mold 21, then connect the upper outer mold 13 and the lower outer mold 23 through fasteners, and then perform injection molding through the injection hole 111 of the bolt rod upper mold 11.

[0035] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A bolt forming die, comprising an upper die assembly (1) and a lower die assembly (2), wherein the upper die assembly (1) and the lower die assembly (2) are detachably connected via a fastener, and characterized in that: The upper die assembly (1) comprises an upper die for a bolt rod (11), an upper die for a bolt head (12) and an upper outer die plate (13), wherein the upper die for the bolt head (12) is detachably connected between the upper die for the bolt rod (11) and the upper outer die plate (13) via fasteners; the lower die assembly (2) comprises a lower die for a bolt rod (21), a lower die for a bolt head (22) and a lower outer die plate (23), wherein the lower die for the bolt head (22) is detachably connected between the lower die for the bolt rod (21) and the lower outer die plate (23) via fasteners.

2. A bolt forming die as claimed in claim 1, characterized in that: The bolt rod upper mold (11) and the bolt rod lower mold (21) are provided with a bolt rod forming cavity (112), and the shape of the bolt rod forming cavity (112) is a half bolt rod shape.

3. A bolt forming die as claimed in claim 2, characterized in that: The surface of the bolt rod upper mold (11) is also provided with an injection hole (111) which is in communication with the bolt rod molding cavity (112).

4. A bolt forming die as claimed in claim 1, characterized in that: The bolt head upper mold (12) and the bolt head lower mold (22) are provided with a bolt head forming cavity (121), and the shape of the bolt head forming cavity (121) is a half bolt head shape.

5. A bolt forming die as claimed in claim 4, characterized in that: The upper outer template (13) and the lower outer template (23) are provided with corresponding threaded holes (131, 231) for connecting to each other, the cross-sectional shapes of the upper outer template (13) and the lower outer template (23) are L-shaped, and the threaded holes are arranged on the horizontal plate.

6. A bolt forming die as claimed in claim 5, characterized in that: The side surface of the upper mold (11) of the bolt rod, the side surface of the mold (12) on the bolt head and the side surface of the upper outer mold plate (13) are all provided with threaded through holes (113, 122, 132, 232) for connecting with each other.

7. A bolt forming die as claimed in claim 1, characterized in that: The number of the bolt head upper mold (12) and the upper outer mold plate (13) is two and connected to the two sides of the bolt rod upper mold (11); the number of the bolt head lower mold (22) and the lower outer mold plate (23) is two and connected to the two sides of the bolt rod lower mold (21).

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