CN218835719U

CN218835719U - Automatic forming die of special-shaped lock catch

Info

Publication number: CN218835719U
Application number: CN202223480056.0U
Authority: CN
Inventors: 王克文; 张一帆; 张迎年
Original assignee: ANHUI LIYUAN NUMERICAL CONTROL CUTTING TOOL AND PATTERNS MANUFACTURING CO LTD
Current assignee: ANHUI LIYUAN NUMERICAL CONTROL CUTTING TOOL AND PATTERNS MANUFACTURING CO LTD
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-04-11
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses an automatic molding mould of dysmorphism hasp once makes the inside dog-ear of arc section and arc section end department, and the inside dog-ear precision of bending is high. The scheme includes that the bending die comprises a lower die base, a lower die body is rotatably arranged on the lower die base, a spring is connected between the lower die body and the lower die base, a lower arc forming area is arranged on the lower die body, and the top of the lower arc forming area extends inwards to form a bending sharp angle. The lower die body is arranged in a rotating mode relative to the lower die base, the lower die body is used for forming the special-shaped lock catch arc section by utilizing the bending sharp corner to fold the inner bending angle in one-step forming mode, and the forming precision is high.

Description

Automatic forming die of special-shaped lock catch

Technical Field

The utility model relates to a hasp forming die's technical field especially relates to a special forming die of dysmorphism hasp that one shot forming and shaping precision are high that can realize circular arc and interior dog-ear.

Background

A shackle is an article used to fasten two items. The special-shaped lock catch as shown in the figure has an inward-concave folded angle at the end of the arc segment of the end part. Patent technologies for searching the arc forming direction, such as CN210305161U, a right-angle arc mold of a bending machine, includes a lower die holder and an upper die holder, wherein an arc forming groove is welded at the bottom end of the inner wall of the lower die holder, a support block is arranged on the right side of the arc forming groove, a transverse rod is welded on the left wall of the support block, one side of the transverse rod penetrates through the arc forming groove and the inside of the lower die holder, the end of the transverse rod extends to the left side of the lower die holder and is fixedly connected with a pull block, and a feeding hole is formed in the left wall of the lower die holder;

CN104128489A, a method for molding an arc water tank body, the adopted molding die comprises an upper die and a lower die, the upper die comprises a cylindrical male die and a connecting plate fixed on the male die; the lower die comprises a female die with an arc-shaped cavity, the bottom of the female die is fixedly connected with a bottom plate, and a filler strip is arranged below the bottom plate; the box body forming steps are as follows: fixing the upper die on a bending male die of a bending machine by using a bolt; removing a bending female die of the bending machine; placing the lower die on a workbench for debugging and centering, and fixing the lower die on the workbench; placing the blank into an arc-shaped cavity of a female die, closing an upper die and a lower die of a forming die to punch the blank, and opening the die to obtain an arc-shaped box body, wherein only arc sections can be processed by the technology, and the inner break angles cannot be folded out at one time;

CN 113751543A-a metal plate arc bending method, comprising: early-stage work preparation: moving an X axis and a Z axis of an upper bending knife and a lower bending knife to a first knife bending position, and resetting an upper pressing knife, a pressing claw mechanism and a guiding rule mechanism to initial positions; feeding before bending: the workpiece is placed at a reserved position on a workbench surface, the workpiece is clamped through the running of the guiding rule mechanism, the workpiece is pressed and fixed through the pressure claw mechanism, then the guiding rule mechanism descends to be separated from the clamping position, the workpiece is clamped through the upper pressure claw and the lower pressure claw, moves to the position of the pressure knife and is conveyed to the bending position of the first knife. The same is true of this technique.

In conclusion, the special-shaped lock catch has a special inward-folding angle (about 150 degrees) at the end of the arc section, and can not be manufactured at one time if the scheme is adopted for processing.

Disclosure of Invention

The utility model aims at solving the prior art in not enough, so provide an automatic molding mould of dysmorphism hasp, once make the interior dog-ear of circular arc section and circular arc section end department, and the interior dog-ear precision of bending is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic molding mould of dysmorphism hasp, includes the die holder, rotate on the die holder and lay down the die body, be connected with the spring between lower die body and the die holder, lay down the regional top of circular arc shaping inwards extension formation closed angle of bending of circular arc shaping region and lower on the die body. The lower die body is arranged in a rotating mode relative to the lower die base, the lower die body is used for forming the special-shaped lock catch arc section by utilizing the bending sharp corner to fold the inner bending angle in one-step forming mode, and the forming precision is high.

In the above further technical solution, the lower die base includes a first die base, a second die base, and a third die base, the second die base and the third die base are mounted on the top of the first die base through bolts, and a limiting area for the rotation of the lower die body is surrounded between the second die base and the third die base. The lower die body can only rotate through the limiting areas surrounded by the second die holder and the third die holder.

In the above further technical scheme, two groups of bolts are uniformly provided with positioning gaskets, and the area surrounded by the two groups of positioning gaskets is a plate positioning area. Utilize two locating spacers can be to its panel of treating to bend carry out accurate location, do benefit to operating personnel follow-up operation, improve the shaping efficiency of special-shaped hasp.

In the above further technical solution, the cross section of the lower mold body is arranged in a circular structure, and the lower arc forming region is eccentrically arranged on the lower mold body. Because the lower arc forming area of the lower die body is eccentrically arranged, the lower die body can rotate when the arc section is formed, and the inner bevel angle is accurately bent by using the bending sharp angle, so that one-step forming is completed.

In the above further technical solution, the mold further comprises an upper mold body, wherein the upper mold body is provided with an upper arc molding area adapted to the lower arc molding area and an inner hook molding area connected to the upper arc molding area and adapted to the bent sharp corner. And forming the plate through the upper arc forming area of the upper die body.

In the above further technical solution, one side of the upper arc forming region opposite to the sharp corner of the bend is formed by sequentially connecting a plurality of sections of arc bending surfaces.

In the above further technical solution, the upper mold body and the lower mold body are provided with nitriding layers on the surfaces thereof. The wear resistance, the surface hardness, the fatigue limit and the like of the upper die body and the lower die body can be improved through the nitriding layer.

In the above further technical scheme, the outer side of the nitriding layer is provided with the titanium nitride layer, and the friction coefficient of the upper die body and the lower die body can be reduced and the hardness of the bent sharp corner can be ensured when the special-shaped lock catch is formed by the upper die body and the lower die body due to the large hardness of the titanium nitride and the small friction coefficient.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the formed workpiece according to the present invention;

fig. 3 is a schematic view of the overall structure of the lower die holder after the forming of the workpiece is completed according to the present invention;

fig. 4 is a schematic view of the overall structure of the lower mold body of the present invention;

fig. 5 is a schematic view of the overall structure of the upper die body of the present invention;

FIG. 6 is a partial enlarged view of the upper arc forming region of the upper mold body according to the present invention;

fig. 7 is a schematic structural view of the special-shaped lock of the present invention.

In the figure: 10. a lower die holder; 11. a first die holder; 12. a second die holder; 13. a third die holder; 14. positioning the gasket; 20. a lower die body; 30. a spring; 40. a lower arc forming area; 50. bending a sharp corner; 60. feeding a mold body; 70. an upper arc molding area; 80. an inner hook molding area.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1: as shown in fig. 1 to 6, the automatic forming mold for the special-shaped lock catch comprises a lower mold base 10, wherein a lower mold body 20 is rotatably arranged on the lower mold base 10, a spring 30 is connected between the lower mold body 20 and the lower mold base 10, a lower arc forming area 40 is arranged on the lower mold body 20, and the top of the lower arc forming area 40 extends inwards to form a bending sharp angle 50.

The lower die base 10 comprises a first die base 11, a second die base 12 and a third die base 13, the second die base 12 and the third die base 13 are mounted at the top of the first die base 11 through bolts, a limiting area for the lower die body 20 to rotate is arranged between the second die base 12 and the third die base 13 in a surrounding mode, positioning gaskets 14 are uniformly distributed on the two groups of bolts, an area surrounded by the two groups of positioning gaskets 14 is a plate positioning area, the cross section of the lower die body 20 is distributed in a circular structure, and a lower arc forming area 40 is eccentrically distributed on the lower die body 20.

The bending die further comprises an upper die body 60, wherein an upper arc forming area 70 matched with the lower arc forming area 40 and an inner hook forming area 80 connected with the upper arc forming area 70 and matched with the bending sharp angle 50 are distributed on the upper die body 60.

When the special-shaped lock catch is used, firstly, a plate is positioned through the positioning gasket 14, then the upper die body 60 moves downwards to the upper arc forming area 70 and contacts with the plate firstly, the plate moves towards the lower arc forming area 40 and is bent, when the bottom of the plate contacts with the inner wall of the lower arc forming area 40, the lower arc forming area 40 is eccentrically arranged due to the acting force of pressing downwards, the lower die body 20 rotates along with the continuous downward movement of the upper die body 60, the plate is wrapped on the outer side of the upper arc forming area 70 through the lower arc forming area 40, the lower die body 20 rotates in the limiting area, so that the bending sharp corner 50 at the top of the lower die body rotates towards the top, the bending sharp corner 50 of the arc forming lock catch is simultaneously bent, the free end of the special-shaped lock catch can be pressed by the bending sharp corner 50 and bent to the inner hook forming area 80 of the upper die body 60, after forming, the upper die body 60 resets, and the special-shaped lock catch can be taken down along the width direction of the upper die body 60.

The following improvements are made on the basis of the above embodiment: as shown in fig. 6, the following modifications are made on the basis of the above embodiment: one side of the upper arc forming area 70 opposite to the bending sharp angle 50 is formed by connecting a plurality of sections of arc bending surfaces in sequence. Because the plurality of sections of arc bending surfaces arranged on the upper arc forming area 70 can disperse the stress direction of the plate wrapped on the side in the short distance of the plurality of sections along the radial direction, the formed special-shaped lock catch has the advantages of low resilience and high precision.

On the basis of the above embodiment, a modification is made in that the upper mold body 60 and the lower mold body 20 are provided with nitriding layers on their surfaces, and a titanium nitride layer is arranged outside the nitriding layer 90. Can improve the wearability of die body and die body down, surface hardness, fatigue limit etc. through the nitriding layer, lay the titanium nitride layer that can closely combine with the nitrogen atom on the nitriding layer in the outside for its outside forms the big coefficient of friction coating of hardness, can reduce the coefficient of friction at this place when angle 40 of bending is to its infolding including, just also reduces the wearing and tearing of dysmorphism hasp circular arc section outer wall.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. The technical solutions and the inventive concepts of the present invention should be covered by the protection scope of the present invention by adding equivalent substitutions or changes.

Claims

1. The utility model provides an automatic molding mould of dysmorphism hasp, includes die holder (10), its characterized in that, rotate on die holder (10) and laid down die body (20), be connected with spring (30) between lower die body (20) and die holder (10), laid down circular arc shaping region (40) and down on die body (20) circular arc shaping region (40) top inwards extend and form closed angle (50) of bending.

2. The automatic forming die for the special-shaped lock catch as claimed in claim 1, wherein the lower die holder (10) comprises a first die holder (11), a second die holder (12) and a third die holder (13), the second die holder (12) and the third die holder (13) are mounted on the top of the first die holder (11) through bolts, and a limiting area for the lower die body (20) to rotate is defined between the second die holder (12) and the third die holder (13).

3. The automatic forming die for the special-shaped lock catch as claimed in claim 2, wherein two groups of bolts are uniformly provided with positioning gaskets (14), and the area surrounded by the two groups of positioning gaskets (14) is a plate positioning area.

4. The automatic forming die for the special-shaped lock catch as claimed in claim 2, wherein the cross section of the lower die body (20) is arranged in a circular structure, and the lower arc forming area (40) is eccentrically arranged on the lower die body (20).

5. The automatic forming die for the special-shaped lock catch as claimed in claim 4, further comprising an upper die body (60), wherein the upper die body (60) is provided with an upper arc forming area (70) matched with the lower arc forming area (40) and an inner hook forming area (80) connected with the upper arc forming area (70) and matched with the bent sharp corner (50).

6. The automatic forming die for the special-shaped lock catch as claimed in claim 5, wherein one side of the opposite bending sharp angle (50) of the upper arc forming area (70) is formed by sequentially connecting a plurality of sections of arc bending surfaces.

7. The automatic forming mold for the special-shaped lock catch as claimed in claim 5, wherein the upper mold body (60) and the lower mold body (20) are provided with nitriding layers on the surfaces.

8. The automatic forming mold for a special-shaped lock catch according to claim 7, wherein a titanium nitride layer is arranged on the outer side of the nitriding layer.