CN213559513U

CN213559513U - Roller bending die

Info

Publication number: CN213559513U
Application number: CN202020958727.1U
Authority: CN
Inventors: 李芳�
Original assignee: Dongguan Tengsheng Hardware Products Co ltd
Current assignee: Dongguan Tengsheng Hardware Products Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-06-29
Anticipated expiration: 2030-05-28

Abstract

The utility model provides a roller bending die, which comprises a male die and a female die; the convex mould has a downward convex forming convex surface; the female die is provided with a forming concave surface which is concave downwards; when the male die and the female die are closed, a forming space is formed between the forming convex surface and the forming concave surface; characterized in that the roller is also included; the roller is rotationally connected to the female die along the central axis of the roller, and the outer circular surface of the roller is tangent to the forming concave surface; before and during the bending process of the roller blank, the surface of the roller blank facing the roller is tangent to the outer circular surface of the roller. According to the roller forming die, the rotary roller is arranged on the female die, and the outer circular surface of the roller is tangent to the surface of the roller blank, so that rolling friction is formed between the roller blank and the roller during bending, and therefore, after forming, the outer surface of the roller is prevented from being scratched, and the surface quality of the roller is improved.

Description

Roller bending die

Technical Field

The utility model relates to a mould technical field of bending especially relates to a cylinder mould of bending.

Background

At present, the roller is produced by adopting a stamping die, and the production efficiency is high. The roller stamping die comprises a female die and a male die positioned above the female die; the surface of the female die facing the male die is provided with a forming concave surface, the surface of the male die facing the female die is provided with a forming convex surface, during production, the roller blank is placed on the female die, the male die moves downwards to the outside, and the roller blank is formed under the matching of the forming concave surface and the forming convex surface. However, in the prior art, in the gradual deformation process of the roller blank, the roller blank slides and rubs with the forming concave surface, so that the surface of the roller blank is scratched, and the surface quality of a product is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the present disclosure provides a roller bending die.

According to one aspect of the disclosure, a roller bending die comprises a male die and a female die; the convex mould has a downward convex forming convex surface; the female die is provided with a forming concave surface which is concave downwards; when the male die and the female die are closed, a forming space is formed between the forming convex surface and the forming concave surface; also includes a roller; the roller is rotationally connected to the female die along the central axis of the roller, and the outer circular surface of the roller is tangent to the forming concave surface; before and during the bending process of the roller blank, the surface of the roller blank facing the roller is tangent to the outer circular surface of the roller.

According to at least one embodiment of the present disclosure, the forming concave surface is provided with a roller groove along a central axis of the roller, a cross section of the roller groove is arc-shaped, and the roller groove is in clearance fit with the roller.

According to at least one embodiment of the present disclosure, a central angle Ω of a cross section of the roller slot satisfies a relationship: 180 < omega < 360.

According to at least one embodiment of the present disclosure, both ends of the roller are provided with stoppers; the stop blocks are connected with the female die.

According to at least one embodiment of the present disclosure, the stoppers are detachably connected to the female die.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a front view of a roller bending die (female and male are not closed) according to an embodiment of the present disclosure.

Fig. 2 is a front view of a roller bending die (female and male closed) according to an embodiment of the present disclosure.

Fig. 3 is a sectional view a-a in fig. 1.

Fig. 4 is a schematic view of a female die in a roller bending die according to an embodiment of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to the roller forming die, the rotary roller is arranged on the female die, and the outer circular surface of the roller is tangent to the surface of the roller blank, so that rolling friction is formed between the roller blank and the roller during bending, and therefore, after forming, the outer surface of the roller is prevented from being scratched, and the surface quality of the roller is improved.

The first embodiment is as follows:

as shown in fig. 1, 2 and 3, according to a first embodiment of the present disclosure, there is provided a cylinder bending mold including a male mold 1 and a female mold 2; the male die 1 has a downwardly convex molding convex surface 11; the female die 2 is provided with a forming concave surface 21 which is concave downwards; when the male die 1 and the female die 2 are closed, a forming space 3 is formed between the forming convex surface 11 and the forming concave surface 21; also comprises a roller 4; the roller 4 is rotationally connected to the female die 2 along the central axis thereof, and the outer circular surface of the roller 4 is tangent to the forming concave surface 21; before and during the bending of the roller blank 5, the surface of the roller blank 5 facing the roller 4 is tangent to the outer circular surface of the roller 4.

The roller 4 can be rotationally connected with the female die 2 by a bearing and other modes commonly used in the field; when the roller mill works, the roller blank 5 is placed on the female die 2, and at the moment, the surface of the roller blank 5 facing the roller 4 is tangent to the outer circular surface of the roller 4; then the male die 1 moves downwards to gradually extrude the roller blank 5 to the forming space 3, and in the whole process, the roller blank 5 and the roller 4 are in rolling friction with extremely low friction resistance, so that the outer surface of the roller is prevented from being scratched after forming.

In this embodiment, the roller 4 is disposed at the boundary between the upper end surface of the die 2 and the molding concave surface 11. The rollers 4 can also be arranged on the extension of the forming concave 11, as long as the rollers 4 do not interfere with the male die 1 and the rollers 4 are always tangent to the roller blank 5 during the bending process.

Example two:

the main difference from the first roller bending die embodiment is that, in this embodiment, as shown in fig. 4, a roller groove 22 is formed in the forming concave surface 21 along a central axis of the roller 4, a cross section of the roller groove 22 is arc-shaped, and the roller groove 22 is in clearance fit with the roller 4. By providing the roller groove 22 in cooperation with the roller 4, parts such as a rotary connecting member, e.g., a bearing, are eliminated, the structure of the present disclosure is simplified, and the accuracy is also more easily ensured due to the simplified structure.

Example three:

the main difference from the second roller bending die embodiment is that, in this embodiment, the central angle Ω of the cross section of the roller groove 22 as shown in fig. 4 satisfies the relationship: 180 < omega <360 to ensure that the rollers 4 do not come out of the roller groove 22 in the radial direction of the rollers 4 without the need for additional parts.

Example four:

the main difference from the second or third embodiment of the roller bending die is that in this embodiment, as shown in fig. 3, both ends of the roller 4 are provided with stoppers 6; the stop blocks 6 are connected with the female die 2, so that the roller 4 is prevented from falling out of the roller groove 22 along the axial direction of the roller 4.

Example five:

the main difference from the fourth roller bending die embodiment is that in this embodiment, the stop blocks 6 are all detachably connected with the female die 2, so that the worn and failed roller 4 can be replaced by removing the stop block 6 at one end of the roller 4, and the replacement efficiency is improved.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A roller bending die comprises a male die and a female die; the convex mould has a downward convex forming convex surface; the female die is provided with a forming concave surface which is concave downwards; when the male die and the female die are closed, a forming space is formed between the forming convex surface and the forming concave surface; characterized in that the roller is also included; the roller is rotationally connected to the female die along the central axis of the roller, and the outer circular surface of the roller is tangent to the forming concave surface; before and during the bending of the roller blank, the surface of the roller blank facing the roller is tangent to the outer circular surface of the roller; the forming concave surface is provided with a roller groove along the central axis of the roller, the cross section of the roller groove is arc-shaped, and the roller groove is in clearance fit with the roller; the central angle omega of the cross section of the roller groove satisfies the relation: 180 < omega < 360.

2. The roller bending die according to claim 1, wherein both ends of the roller are provided with a stop; the stop blocks are connected with the female die.

3. The roller bending die according to claim 2, wherein the stop blocks are detachably connected with the female die.