CN216441497U

CN216441497U - Rim hemming die

Info

Publication number: CN216441497U
Application number: CN202121842879.6U
Authority: CN
Inventors: 李正琴; 何秀权
Original assignee: Wuhan Shangtian Industrial Technology Co ltd
Current assignee: Wuhan Shangtian Industrial Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-05-06
Anticipated expiration: 2031-08-09

Abstract

The utility model relates to a rim hemming die which comprises a lower die set and an upper die set, wherein the lower die set comprises a lower die set and an upper die set; the lower die set comprises a lower die plate and a curled edge side die, and the curled edge side die is cylindrical and is vertically arranged on the upper end surface of the lower die plate; the upper die set comprises a liftable upper die plate arranged above the curled edge side die, an annular groove is formed in the lower end face of the upper die plate, the annular groove and the curled edge side die are coaxially arranged, the inner side edge of the annular groove corresponds to the outer side wall of the curled edge side die, the cross section of the annular groove is arc-shaped, the die is simple in structure and high in production efficiency, a set of dies are used for completing production of two products, a single-curled edge rim and a double-curled edge rim can be realized through a set of dies, and the die opening cost of an enterprise is saved.

Description

Rim hemming die

Technical Field

The utility model relates to a rim hemming die.

Background

The composite aluminum alloy hub is generally formed by compounding a rim and spokes, wherein the end edge of the rim is provided with a curled edge, as shown in fig. 1, the rim X1 is integrally cylindrical, the spoke X2 is integrally disc-shaped, the spoke X2 is installed inside the rim X1, and two ends of the rim X1 are respectively provided with an outward bent curled edge, namely a lower curled edge X3 and an upper curled edge X4.

The prior rim of the composite aluminum alloy hub is generally formed by pre-bending and then punching, the forming process is complicated, and no corresponding die is used for assisting in realizing the manufacture of the rim.

SUMMERY OF THE UTILITY MODEL

Based on the above description, the utility model provides a rim hemming die, which is used for solving the technical problems that a rim hemming forming process is complex and a corresponding die is not used for rim hemming processing in the prior art.

The technical scheme for solving the technical problems is as follows:

a rim hemming die comprises a lower die set and an upper die set;

the lower die set comprises a lower die plate and a curled edge side die, and the curled edge side die is cylindrical and is vertically arranged on the upper end surface of the lower die plate;

go up the module including liftable install in the cope match-plate pattern of turn-up side mould top, the lower terminal surface of cope match-plate pattern is formed with the annular groove, the annular groove with the coaxial setting of turn-up side mould, the inboard edge of annular groove with the lateral wall of turn-up side mould corresponds, the cross-section of annular groove is the arc.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

when the rim hemming die is used, a cylindrical workpiece to be hemmed is sleeved on the outer side of the hemming side die, the lower end of the workpiece is placed on the lower die plate, and the lower die plate supports the workpiece; and then the upper template is driven to descend by the stamping equipment, so that the upper edge of the workpiece deforms along the arc shape of the annular groove to form a curled edge, then the upper template is driven to ascend, the workpiece is taken down, and thus the curled edge process of the single-curled rim is realized.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the lower bolster includes lower bolster and backup pad, the backup pad install in the up end of lower bolster, be formed with in the backup pad and be used for the installation the mounting hole of turn-up side form, the up end of backup pad is formed with circular recess, circular recess's lower terminal surface with the mounting hole intercommunication, circular recess's diameter size with the diameter size of the outside edge of annular recess equals.

Furthermore, the lower template also comprises an adjusting plate, and the adjusting plate is arranged between the lower base plate and the supporting plate.

Furthermore, the upper end of the outer side wall of the curled edge side die is provided with an annular step, the upper template is provided with a position avoiding hole, and the inner side wall of the position avoiding hole corresponds to the side wall of the annular step.

Furthermore, the upper die set further comprises a blanking auxiliary piece, the upper end of the blanking auxiliary piece is installed on the lower end face of the upper die plate and connected to the outer side of the annular groove, a hook portion extending towards the inner side is formed at the lower end of the blanking auxiliary piece, and the projection of the inner end of the hook portion on the upper die plate is located between the edges of the two sides of the annular groove.

Furthermore, the blanking auxiliary part is of an L-shaped structure, a vertical section of the blanking auxiliary part is connected to the lower end of the upper template through a bolt, and a transverse section of the blanking auxiliary part extends inwards to form a hook part.

Furthermore, the number of the blanking auxiliary parts is two, and the two blanking auxiliary parts are symmetrically arranged on the upper template.

Furthermore, an annular inner edge is formed at the lower end of the curled side die, and the annular inner edge is connected with the lower base plate through the bolt.

Furthermore, the upper die set further comprises an upper backing plate, and the upper backing plate is installed at the upper end of the upper die plate and used for being connected with a pressure head of the press machine.

Drawings

FIG. 1 is a schematic structural view of a composite aluminum alloy hub provided in the prior art;

FIG. 2 is a schematic structural view of a formed double-bead rim;

figure 3 is a schematic structural diagram of a rim bead mold provided in an embodiment of the present application;

FIG. 4 is a schematic view of a single rolled edge according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a dual-curled edge according to an embodiment of the present application;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a lower module; 2. an upper module; 30. a workpiece; 11. a lower template; 12. curling the side die; 21. mounting a template; 22. an upper base plate; 21a, an annular groove; 121. an annular inner rim; 111. a lower base plate; 112. a support plate; 113. an adjusting plate; 11a, a circular groove; 21b, clearance holes.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that spatial relationship terms, such as "under", "below", "beneath", "below", "over", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is understood as "electrical connection", "communication connection", or the like if the connected circuits, modules, units, or the like have electrical signals or data transmission therebetween.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

As shown in fig. 3, the embodiment of the present application provides a rim hemming die, which is mainly used for processing a cylindrical workpiece 30 into a double-hemming rim initial shape with hems at two ends as shown in fig. 2, and comprises a lower die set 1 and an upper die set 2.

The lower die set 1 comprises a lower die plate 11 and a curled-edge side die 12, wherein the curled-edge side die 12 is cylindrical and is vertically arranged on the upper end face of the lower die plate 11;

specifically, the lower template 11 includes a lower padding plate 111 and a support plate 112, the lower padding plate 111 is used for being connected with a workbench of a press machine, the support plate 112 is installed on the upper end surface of the lower padding plate 111, a mounting hole for installing the hemming side die 12 is formed in the support plate 112, and the hemming side die 12 is installed on the lower padding plate 111 through the mounting hole.

An annular inner edge 121 is formed at the lower end of the curled side die 12, and the annular inner edge 121 and the lower backing plate 111 are connected through the bolt.

Go up die set 2 including liftable install in cope match-plate pattern 21 and the upper padding plate 22 of turn-up side mould 12 top, the lower terminal surface of cope match-plate pattern 21 is formed with annular groove 21a, annular groove 21a with turn-up side mould 12 is coaxial to be set up, the inboard edge of annular groove 21a with the lateral wall of turn-up side mould 12 corresponds, the cross-section of annular groove 21a is the arc, the upper padding plate 22 install in the upper end of cope match-plate pattern 21 for be connected with the pressure head of press.

The upper die plate 21 is lowered by the ram, and the annular groove 21a can deform the upper edge of the workpiece 30 along the arc shape of the annular groove 21a to form a bead when the upper die plate 21 is pressed downward.

In some embodiments of the present application, the upper end surface of the support plate 112 is formed with a circular groove 11a, the lower end surface of the circular groove 11a is communicated with the mounting hole, the diameter of the circular groove 11a is equal to the diameter of the outer edge of the annular groove 21a, an annular accommodating groove is formed between the circular groove 11a and the lower end side wall of the crimping side die 12, and the cross section of the accommodating groove is of a rectangular structure.

When the curled edge at one end of the workpiece 30 is formed and the curled edge at the other end is manufactured, the workpiece 30 is inverted, and then the manufactured curled edge is placed in the accommodating groove, so that the manufactured curled edge is prevented from deforming when the curled edge at the other end is manufactured.

In this embodiment, the lower mold plate 11 further includes an adjusting plate 113, and the adjusting plate 113 is installed between the lower backing plate 111 and the supporting plate 112.

An annular step 12a is formed at the upper end of the outer side wall of the curled side die 12, a clearance hole 21b is formed in the upper die plate 21, and the inner side wall of the clearance hole 21b is arranged corresponding to the side wall of the annular step 12 a.

When the upper die plate 21 is pressed downwards, the annular step 12a is matched with the position avoiding hole 21b, so that the stability of die assembly is ensured, and the position accuracy of the pressing of the upper die plate 21 is also ensured.

In order to facilitate blanking of the workpiece 30 after the edge curling, the upper die set 2 further comprises a blanking auxiliary part 23, the upper end of the blanking auxiliary part 23 is mounted on the lower end face of the upper die plate 21 and connected to the outer side of the annular groove 21a, a hook part extending towards the inner side is formed at the lower end of the blanking auxiliary part 23, the projection of the inner end of the hook part on the upper die plate 21 is located between the edges of the two sides of the annular groove 21a, and the workpiece 30 after the edge curling is finished is taken out from the edge curling side die 12 under the driving of the hook part.

Specifically, the blanking auxiliary member 23 is an L-shaped structure, a vertical section 231 thereof is connected to the lower end of the upper die plate 21 by bolts, and a transverse section 232 thereof extends inward to form a hook.

When the upper die plate 21 is raised by the ram, the lower end surface of the transverse section 232 holds the lower end surface of the bead 31, and the workpiece 30 is then removed from the die.

In order to ensure the stability of taking out the workpiece 30, the number of the blanking auxiliary members 23 is two, and the two blanking auxiliary members 23 are symmetrically arranged on the upper die plate 21.

The specific use process of this embodiment is as follows:

as shown in fig. 4, when the upper die set 2 moves downward under the action of the press ram, because the annular groove 21a in the upper die plate 21 can deform the upper edge of the cylindrical workpiece 30 along the shape of the arc-shaped surface thereof, after the movement stops, the upper edge of the workpiece 30 will fit with the annular groove 21a precisely and form a curled edge with the same shape as the bottom surface of the annular groove 21a, after the curled edge is completed, the upper die set 2 moves upward under the action of the press ram, the curled edge will be separated from the arc-shaped groove, when the transverse section of the blanking auxiliary 232 is moved to be in contact with the curled edge 31, the upper die set 2 continues to move, the blanking auxiliary 232 moves the formed single-curled rim out of the die, and the process of curling the single-curled rim is completed;

as shown in fig. 5, the single-bead rim is inverted and then sleeved outside the bead side die 12, the formed bead 31 is located in a containing groove formed between the circular groove 11a and the bead side die 12, then the upper die set 2 moves downward under the action of the press ram, the annular groove 21a in the upper die plate 21 enables the other end edge of the cylindrical workpiece 30 to deform along the shape of the arc-shaped surface of the cylindrical workpiece, after the movement stops, the bead 31 is formed, after the bead is completed, the upper die set 2 moves upward under the action of the press ram, the bead is separated from the arc-shaped groove, when the transverse section of the blanking auxiliary member 232 is moved to be in contact with the bead 31, the upper die set 2 continues to move, the blanking auxiliary member 232 moves the formed double-bead wheel out of the die, and the bead process of the double-bead rim is completed.

The mould is simple in structure and high in production efficiency, automatic demoulding can be achieved, a set of moulds can complete production of two products, the single-turned-edge rim and the double-turned-edge rim can be achieved through the set of moulds, and the mould opening cost of enterprises is saved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A rim hemming die is characterized by comprising a lower die set and an upper die set;

2. The rim hemming die of claim 1 wherein the lower die plate includes a lower backing plate and a support plate, the lower backing plate is used for being connected with a workbench of a press, the support plate is mounted on an upper end face of the lower backing plate, a mounting hole for mounting the hemming side die is formed in the support plate, a circular groove is formed in an upper end face of the support plate, a lower end face of the circular groove is communicated with the mounting hole, and the diameter of the circular groove is equal to the diameter of the outer edge of the annular groove.

3. The rim hemming die of claim 2 wherein the lower die plate further includes an adjustment plate mounted between the lower backing plate and the support plate.

4. The rim hemming die of claim 2 wherein an annular step is formed at an upper end of an outer side wall of the hemming side die, a clearance hole is formed in the upper die plate, and an inner side wall of the clearance hole is arranged corresponding to a side wall of the annular step.

5. The rim hemming die of claim 2, wherein the upper die set further includes a blanking auxiliary member, an upper end of the blanking auxiliary member is mounted on a lower end surface of the upper die plate and connected to an outer side of the annular groove, a lower end of the blanking auxiliary member is formed with a hook portion extending inward, and a projection of an inner end of the hook portion on the upper die plate is located between two side edges of the annular groove.

6. The rim hemming die of claim 5 wherein the blanking aid is an L-shaped structure having a vertical section bolted to the lower end of the upper platen and a lateral section extending inwardly to form a hook portion.

7. The rim hemming die of claim 5 wherein the number of the blanking aids is two, and the two blanking aids are symmetrically disposed on the upper mold plate.

8. The rim hemming die of claim 2, wherein the lower end of the hemming side die is formed with an annular inner rim, and the annular inner rim is connected to the lower shim plate by bolts.

9. The rim hemming die of claim 2 wherein the upper die set further includes an upper backing plate mounted to an upper end of the upper die plate for connection with a ram of a press.