CN213613899U - Screw rod forming die - Google Patents
Screw rod forming die Download PDFInfo
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- CN213613899U CN213613899U CN202021515676.1U CN202021515676U CN213613899U CN 213613899 U CN213613899 U CN 213613899U CN 202021515676 U CN202021515676 U CN 202021515676U CN 213613899 U CN213613899 U CN 213613899U
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Abstract
The utility model relates to a screw rod forming die, a screw rod comprises a rod body and a screw rod cap, the rod body and the screw rod cap are integrally formed, and a connecting part between the rod body and the screw rod cap forms a step surface; the screw cap is of a spherical crown structure; the method is characterized in that: comprises an upper die and a lower die; the screw rod forming device of the utility model firstly forges the end part of the screw rod into a prismatic table-shaped structure through the matching of the first pier head and the lower die, and then forges the end part of the screw rod into a spherical crown-shaped structure through the matching of the second pier head and the lower die; adopt two sets of pier nose structures, divide twice to carry out the shaping of screw rod tip spherical crown structure, can avoid screw rod tip spherical crown structure one shot forming to lead to the problem that the deformation volume is too big to produce the fracture.
Description
Technical Field
The utility model relates to a screw rod shaping field especially relates to a screw rod forming die.
Background
The top end of a common screw is in a spherical crown structure, and the screw is often used for fixing and positioning a bracket in communication equipment; the amount of such screw structures is very large; in a conventional production die, a spherical crown structure at the end part of a screw rod is formed by one-time forging, and the deformation amount of the end part of the screw rod is large in one-time forging and punching, so that the spherical crown structure is easy to crack, and the quality of a product is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a screw rod forming die can solve general screw rod structure that has the spherical crown shape and adopt one shot forming to lead to the problem of the spherical crown structure fracture of screw rod tip easily.
In order to solve the technical problem, the utility model adopts the technical scheme that: a screw rod forming die comprises a rod body and a screw rod cap, wherein the rod body and the screw rod cap are integrally formed, and a step surface is formed at the joint between the rod body and the screw rod cap; the screw cap is of a spherical crown structure; the innovation points are as follows: comprises an upper die and a lower die;
the upper die comprises a first pier head, a second pier head, an upper die holder and an upper die plate; the top end of the first pier head and the top end of the second pier head are both connected to the bottom end of the upper die holder, an installation groove for installing the upper die holder is formed in the upper die plate, and the upper die holder is connected to the upper die plate; the first pier head is provided with a frustum pyramid-shaped cavity, and the second pier head is provided with a spherical crown-shaped cavity; the upper die base is driven by the driving cylinder to drive the first pier head and the second pier head to be switched along the horizontal direction;
the lower die comprises a supporting bottom plate, a lower die holder, a lower die plate, a lower die core, a lower die sleeve and a lower die piece; a positioning central hole is formed in the center of the supporting bottom plate along the vertical direction; the lower die base comprises a positioning column and a lower template mounting base; the positioning column is embedded in a positioning central hole of the supporting bottom plate, and a screw positioning hole is formed in the center of the positioning column along the axis direction; a step surface is circumferentially arranged at the top end of the positioning column and is in contact with the upper surface of the supporting bottom plate; the lower template mounting seat is arranged on the supporting base plate, a groove for accommodating the top end of the positioning column is formed in the bottom end of the lower template mounting seat, a mounting groove for accommodating the lower template is formed in the top end of the lower template mounting seat, and a through hole communicated with the positioning hole of the screw rod on the positioning column is formed in the center of the lower template mounting seat; the lower template is arranged in the mounting groove on the lower template mounting seat, external threads are circumferentially arranged on the outer wall of the lower template, and a through hole for accommodating the lower die core to be embedded is formed in the center of the lower template; the lower die core is embedded into the through hole of the lower die plate, the inner wall of the lower die sleeve is provided with internal threads, and the internal threads on the lower die sleeve are matched with the external threads on the lower die plate to tightly press the lower die core into the lower die plate; the lower die sheet is arranged at the top end of the lower die core and is positioned in the lower die sleeve; the lower die plate, the lower die core and the lower die plate are coaxial, and a cavity for accommodating the screw rod to be embedded is formed in the center of the lower die plate, the lower die core and the lower die plate.
Furthermore, the top end of the inner wall of the lower die sleeve is of an inclined guide surface structure, and the outer wall of the lower die piece is tightly attached to the inclined guide surface structure on the inner surface of the lower die sleeve.
Furthermore, the bottom of reference column is provided with the resilience hole that switches on with the screw rod locating hole along the axis direction, and is provided with the rebound piece in the screw rod locating hole and the junction in resilience hole.
The utility model has the advantages that:
1) the screw rod forming device has the advantages that the end part of the screw rod is forged into a prismatic table-shaped structure through the matching of the first pier head and the lower die, and then the end part of the screw rod is forged into a spherical crown-shaped structure through the matching of the second pier head and the lower die; adopt two sets of pier nose structures, divide twice to carry out the shaping of screw rod tip spherical crown structure, can avoid screw rod tip spherical crown structure one shot forming to lead to the problem that the deformation volume is too big to produce the fracture.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a structural diagram of the screw rod forming mold of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a screw molding die comprises a rod body and a screw cap, wherein the rod body and the screw cap are integrally molded, and a step surface is formed at the joint between the rod body and the screw cap; the screw cap is in a spherical crown structure; comprises an upper die 1 and a lower die 2;
the upper die 1 comprises a first pier head 11, a second pier head 12, an upper die base 13 and an upper die plate 14; the top end of the first pier head 11 and the top end of the second pier head 12 are both connected to the bottom end of an upper die holder 13, an installation groove for installing the upper die holder 13 is formed in the upper die plate 14, and the upper die holder 13 is connected to the upper die plate 14; the first pier head 11 is provided with a frustum pyramid-shaped cavity, and the second pier head 12 is provided with a spherical crown-shaped cavity; the upper die holder 13 is driven by the driving cylinder 15 to drive the first pier head 11 and the second pier head 12 to be switched along the horizontal direction;
the lower die 2 comprises a support bottom plate 21, a lower die holder 22, a lower die plate 23, a lower die core 24, a lower die sleeve 25 and a lower die piece 26; a positioning central hole is formed in the center of the supporting bottom plate 21 along the vertical direction; the lower die base 22 comprises positioning columns 221 and a lower template mounting base 222; the positioning column 221 is embedded in a positioning center hole of the support bottom plate 21, and a screw positioning hole 223 is formed in the center of the positioning column 221 along the axial direction; a step surface is circumferentially arranged at the top end of the positioning column 221 and is in contact with the upper surface of the supporting bottom plate 21; the lower template mounting seat 222 is arranged on the supporting bottom plate 21, the bottom end of the lower template mounting seat 222 is provided with a groove for accommodating the top end of the positioning column 221, the top end of the lower template mounting seat 222 is provided with a mounting groove for accommodating the lower template 23, and the lower template mounting seat 222 is provided with a through hole communicated with the screw positioning hole 223 on the positioning column 221 along the center; the lower template 23 is arranged in the mounting groove of the lower template mounting seat 222, an external thread is arranged on the outer wall of the lower template 23 along the circumferential direction, and a through hole for accommodating the lower mold core 24 to be embedded is arranged in the center of the lower template 23; the lower mold core 24 is embedded in a through hole of the lower mold plate 23, an inner thread is arranged on the inner wall of the lower mold sleeve 25, the inner thread on the lower mold sleeve 25 is matched with the outer thread on the lower mold plate 23, and the lower mold core 24 is tightly pressed in the lower mold plate 23; the lower die sheet 26 is arranged at the top end of the lower die core 24 and positioned in the lower die sleeve 25; the lower die plate 26, the lower die core 24 and the lower die plate 23 are coaxial and centrally form a cavity for accommodating the screw rod.
The top end of the inner wall of the lower die sleeve 25 is of an inclined guide surface structure, and the outer wall of the lower die sheet 26 is tightly attached to the inclined guide surface structure of the inner surface of the lower die sleeve.
The bottom end of the positioning column 221 is provided with a rebound hole 224 communicated with the screw positioning hole 223 along the axial direction, and a rebound block is arranged at the joint of the screw positioning hole 223 and the rebound hole 224.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A screw rod forming die comprises a rod body and a screw rod cap, wherein the rod body and the screw rod cap are integrally formed, and a step surface is formed at the joint between the rod body and the screw rod cap; the screw cap is of a spherical crown structure; the method is characterized in that: comprises an upper die and a lower die;
the upper die comprises a first pier head, a second pier head, an upper die holder and an upper die plate; the top end of the first pier head and the top end of the second pier head are both connected to the bottom end of the upper die holder, an installation groove for installing the upper die holder is formed in the upper die plate, and the upper die holder is connected to the upper die plate; the first pier head is provided with a frustum pyramid-shaped cavity, and the second pier head is provided with a spherical crown-shaped cavity; the upper die base is driven by the driving cylinder to drive the first pier head and the second pier head to be switched along the horizontal direction;
the lower die comprises a supporting bottom plate, a lower die holder, a lower die plate, a lower die core, a lower die sleeve and a lower die piece; a positioning central hole is formed in the center of the supporting bottom plate along the vertical direction; the lower die base comprises a positioning column and a lower template mounting base; the positioning column is embedded in a positioning central hole of the supporting bottom plate, and a screw positioning hole is formed in the center of the positioning column along the axis direction; a step surface is circumferentially arranged at the top end of the positioning column and is in contact with the upper surface of the supporting bottom plate; the lower template mounting seat is arranged on the supporting base plate, a groove for accommodating the top end of the positioning column is formed in the bottom end of the lower template mounting seat, a mounting groove for accommodating the lower template is formed in the top end of the lower template mounting seat, and a through hole communicated with the positioning hole of the screw rod on the positioning column is formed in the center of the lower template mounting seat; the lower template is arranged in the mounting groove on the lower template mounting seat, external threads are circumferentially arranged on the outer wall of the lower template, and a through hole for accommodating the lower die core to be embedded is formed in the center of the lower template; the lower die core is embedded into the through hole of the lower die plate, the inner wall of the lower die sleeve is provided with internal threads, and the internal threads on the lower die sleeve are matched with the external threads on the lower die plate to tightly press the lower die core into the lower die plate; the lower die sheet is arranged at the top end of the lower die core and is positioned in the lower die sleeve; the lower die plate, the lower die core and the lower die plate are coaxial, and a cavity for accommodating the screw rod to be embedded is formed in the center of the lower die plate, the lower die core and the lower die plate.
2. The screw molding die according to claim 1, wherein: the top end of the inner wall of the lower die sleeve is of an inclined guide surface structure, and the outer wall of the lower die piece is tightly attached to the inclined guide surface structure on the inner surface of the lower die sleeve.
3. The screw molding die according to claim 1, wherein: the bottom of reference column is provided with the resilience hole that switches on with the screw rod locating hole along the axis direction, and is provided with the resilience piece in the junction of screw rod locating hole and resilience hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021515676.1U CN213613899U (en) | 2020-07-28 | 2020-07-28 | Screw rod forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021515676.1U CN213613899U (en) | 2020-07-28 | 2020-07-28 | Screw rod forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213613899U true CN213613899U (en) | 2021-07-06 |
Family
ID=76643463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021515676.1U Active CN213613899U (en) | 2020-07-28 | 2020-07-28 | Screw rod forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213613899U (en) |
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2020
- 2020-07-28 CN CN202021515676.1U patent/CN213613899U/en active Active
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