CN216369734U

CN216369734U - Die-cut structure of closed die cavity from inside to outside

Info

Publication number: CN216369734U
Application number: CN202122324032.5U
Authority: CN
Inventors: 周胜; 李启辰; 张晓阳
Original assignee: Shenyang Minneng Auto Parts Co ltd
Current assignee: Shenyang Minneng Auto Parts Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-04-26
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a die-cut structure of a closed cavity from inside to outside, which comprises: an upper die and a lower die; the die core is arranged between the upper die and the lower die and penetrates through a workpiece to be punched, and a plurality of punches for punching are arranged on the die core. In this application, establish on the mold core through waiting to die-cut workpiece cover, then go up the drift that the mould drove in the mold core and treat die-cut work piece by inboard outside die-cut for die-cut residue can not stop in the inside of work piece, avoids the process of the inside residue of manual cleaning work piece, does benefit to automated processing production.

Description

Die-cut structure of closed die cavity from inside to outside

Technical Field

The utility model relates to the technical field of punching, in particular to a punching structure with a closed cavity from inside to outside.

Background

The cross section of the closed round or square section part is a closed cavity, and the surface of the product is provided with a plurality of holes. Currently, the machining of these holes is usually done by CNC drilling or punching from the outside of the profile to the inside.

However, the CNC drilling efficiency is low, the productivity is low, some CNC drilling tools need to be customized, burrs are easy to generate during drilling, a deburring procedure needs to be added subsequently, and the procedure is complicated and low in efficiency; and the inside punching press mode of outside has mold core intensity low, and die-cut blanking remains inside the die cavity, and the clearance difficulty leads to unable realization automated production.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a punching structure with a closed cavity from inside to outside, which is used for solving the problems that the section with the closed cavity as a section is difficult to punch in the prior art and the like.

The technical scheme adopted by the utility model for solving the technical problem is a die-cutting structure of a closed cavity from inside to outside, which comprises the following steps:

an upper die and a lower die;

the die core is arranged between the upper die and the lower die and penetrates through a workpiece to be punched, and a plurality of punches for punching are arranged on the die core.

Further, the die core comprises a fixing section and a punching section, and the workpiece to be punched is sleeved on the punching section;

and a plurality of elastic pieces are further arranged, one end of each elastic piece is abutted to the lower die, and the other end of each elastic piece is abutted to the fixed section.

Furthermore, the die comprises a supporting component, and one end of the die core, far away from the fixed section, of the die cutting section is abutted against or free from the supporting component.

Further, the support assembly includes: the top block moves along a first direction relative to the mold core and is abutted to or separated from the mold core; one end of the first inclined wedge is connected with the jacking block; the second inclined wedge is arranged at one end, far away from the top block, of the first inclined wedge, the second inclined wedge moves along a second direction to drive the top block to move along a first direction, and the first direction is perpendicular to the second direction.

Furthermore, a first inclined plane is arranged at one end, close to the second inclined wedge, of the first inclined wedge, a second inclined plane is arranged at one end, close to the first inclined wedge, of the second inclined wedge, and the first inclined plane is attached to the second inclined plane.

Further, the heights of the first and second slopes gradually increase or decrease in a second direction.

Furthermore, the lower die is also provided with two limiting blocks which are respectively arranged at two ends of the top block, the limiting blocks are provided with first limiting parts, and two ends of the top block are respectively provided with a second limiting part; the first limiting part is arranged above the second limiting part, and a spring is arranged between the first limiting part and the second limiting part.

Furthermore, a driving air cylinder for driving the second inclined wedge to slide along the second direction is further arranged.

Further, the upper die is provided with a plurality of first hitting blocks, and the plurality of first hitting blocks and the plurality of elastic pieces are symmetrical about the fixed section;

the upper die is provided with a second beating block, and the second beating block and the top block are symmetrical relative to the punching section.

Further, a material pressing plate is further arranged between the upper die and the punching section, and the material pressing plate is fixedly connected with the upper die.

Compared with the prior art, the utility model has at least the following beneficial effects:

1. establish on the mold core through treating die-cut work piece cover, then go up the drift that the mould drove in the mold core and treat die-cut work piece by inboard outside die-cut for die-cut residue can not stop in the inside of work piece, avoids the process of the inside residue of manual cleaning work piece, does benefit to automated processing production.

2. The first inclined plane is attached to the second inclined plane, and the first direction is perpendicular to the second direction. When the second inclined wedge moves along the second direction, the second inclined surface slides with the first inclined surface, so that the first inclined wedge is driven to move along the first direction, and the first inclined wedge drives the jacking block to move along the first direction, so that the second inclined wedge is supported and separated from the mold core. Namely, the vertical change of the movement direction can be realized through the first slanting wedge and the second slanting wedge, so that the height of the whole punching structure (namely the size of the punching structure in the first direction) is reduced, the whole structure is more compact, and the punching structure can be more conveniently placed on a punch press.

3. The first knockout block and the elastic piece are arranged symmetrically, and the second knockout block and the ejector block are arranged symmetrically, so that when the die cutting is performed, the extrusion force of the first knockout block and the extrusion force of the elastic piece to the die core can be mutually offset, the extrusion force of the second knockout block and the ejector block which are equal to the die core can be mutually offset, and the phenomenon that the single side of the die core is stressed too much and deformed is avoided.

Drawings

FIG. 1 is a schematic view of a blanking structure in an embodiment;

FIG. 2 is a cross-sectional view of a blanking structure of an embodiment;

FIG. 3 is a cross-sectional view of a support assembly according to an embodiment;

in the figure:

100. an upper die; 110. a lower die; 120. a mold core; 121. a punch; 130. a material pressing plate; 140. first blocking; 150. second blocking;

200. a support assembly; 210. a top block; 211. a second limiting part; 220. a first slanting wedge; 221. a first inclined plane; 230. a second slanting wedge; 231. a second inclined plane; 240. a driving cylinder; 250. a limiting block; 251. a first limiting part; 260. a spring;

300. and (5) punching the workpiece.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1-3, the present invention discloses a die-cutting structure for a closed cavity from inside to outside, including:

an upper die 100 and a lower die 110;

and a mold core 120 disposed between the upper mold 100 and the lower mold 110 and inserted into the workpiece 300 to be punched, wherein a plurality of punches 121 for punching are disposed on the mold core 120.

In this embodiment, the workpiece 300 to be punched is sleeved on the mold core 120, and then the upper mold 100 drives the punch 121 in the mold core 120 to punch the workpiece 300 to be punched from the inside to the outside, so that punched residues cannot stay in the workpiece, the process of manually cleaning residues in the workpiece is avoided, and the automatic processing production is facilitated.

Further, the mold core 120 includes a fixing section and a punching section, and the workpiece 300 to be punched is sleeved on the punching section;

a plurality of elastic members are further provided, one end of each elastic member abuts against the lower die 110, and the other end of each elastic member abuts against the fixed section.

Further, a supporting component 200 is also included, and one end of the die-cutting section on the mold core 120, which is far away from the fixed section, is abutted against or free from the supporting component 200.

Specifically, the fixed section of the mold core 120 is always supported by a plurality of elastic members, and the punching section is suspended, so that the workpiece 300 to be punched can be conveniently installed, after the workpiece is installed, the supporting component 200 supports one end, far away from the mold core 120, of the punching section, so that the whole mold core 120 is supported, and then punching is performed.

Further, the support assembly 200 includes: a top block 210 that moves in a first direction relative to the core 120 against or away from the core 120; a first slanting wedge 220 having one end connected to the top block 210; the second wedge 230 is disposed at an end of the first wedge 220 away from the top block 210, and the second wedge 230 moves along a second direction to drive the top block 210 to move along a first direction, where the first direction is perpendicular to the second direction.

Further, one end of the first wedge 220 close to the second wedge 230 is provided with a first inclined surface 221, one end of the second wedge 230 close to the first wedge 220 is provided with a second inclined surface 231, and the first inclined surface 221 and the second inclined surface 231 are attached to each other.

By the adhesion of the first inclined surface 221 and the second inclined surface 231, when the second inclined wedge 230 moves along the second direction, the second inclined surface 231 slides along the first inclined surface 221, so as to drive the first inclined wedge 220 to move along the first direction, and the first inclined wedge 220 drives the top block 210 to move along the first direction, thereby realizing the support and separation with the mold core 120.

Furthermore, the first direction is perpendicular to the second direction, so that the first slanting wedge 220 and the second slanting wedge 230 can change the moving direction vertically, and further the height of the whole punching structure (i.e. the size of the punching structure in the first direction) is reduced, so that the whole structure is more compact, and the punching structure can be placed on the punch press more conveniently.

Further, the heights of the first and second

inclined surfaces

221 and 231 are gradually increased or decreased in the second direction.

Further, the lower mold 110 is further provided with two limiting blocks 250 respectively disposed at two ends of the top block 210, the limiting blocks 250 are provided with first limiting portions 251, and two ends of the top block 210 are provided with second limiting portions 211 respectively; the first position-limiting portion 251 is located above the second position-limiting portion 211, and a spring 260 is disposed between the first position-limiting portion 251 and the second position-limiting portion 211.

Two ends of the top block 210 are respectively provided with a limiting block 250 which can guide the movement of the top block 210 in a first direction and avoid the deflection of the movement direction; by arranging the first limiting part 251 and the second limiting part 211 and arranging the spring 260 between the two limiting parts, the first inclined wedge 220 can be reset under the action of the spring 260, so that the top block 210 is separated from the mold core 120, and the workpiece is convenient to take out.

Further, a driving cylinder 240 for driving the second wedges 230 to slide in the second direction is further provided.

Further, the upper die 100 is provided with a plurality of first blocks 140, and the plurality of first blocks 140 and the plurality of elastic members are symmetrical with respect to the fixed section;

the upper die 100 is provided with a second block 150, and the second block 150 and the top block 210 are symmetrical about the die-cut section.

The first block 140 and the second block 150 are provided, and the upper die 100 drives the first block 140 and the second block 150 to punch the workpiece 300 to be punched by the punch 121 in the die core 120. The first beating block 140 is arranged to be symmetrical to the elastic piece, and the second beating block 150 is arranged to be symmetrical to the top block 210, so that when the die cutting is carried out, the extrusion forces of the first beating block 140 and the elastic piece to the die core 120 can be mutually offset, the extrusion forces of the second beating block 150 and the top block 210 which are equal to the extrusion forces of the die core 120 can be mutually offset, and the deformation caused by overlarge stress on one side of the die core 120 is avoided.

Further, a material pressing plate 130 is further arranged between the upper die 100 and the punching section, and the material pressing plate 130 is fixedly connected with the upper die 100.

The specific working process and principle of the embodiment are as follows:

firstly, the top block 210 and the mold core 120 in the supporting component 200 are separated, the workpiece 300 to be punched is mounted on the mold core 120, and then the second wedges 230 are pushed, so that the first wedges 220 drive the top block 210 to support the free end of the mold core 120; the die assembly is started, the upper die 100 drives the material pressing plate 130 to press the workpiece, and then the first punching block 140 and the second punching block 150 drive the die core 120 to press downwards, so that the punch 121 punches the workpiece 300 to be punched; after the punching is completed, the second wedges 230 are withdrawn, the first wedges 220 drive the top block 210 to separate from the mold core 120, and the workpiece is taken out to complete the punching process.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a 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 invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Claims

1. A die-cut structure of closed die cavity from inside to outside, its characterized in that includes:

an upper die and a lower die;

2. The structure for punching the closed cavity from inside to outside according to claim 1, wherein the mold core comprises a fixing section and a punching section, and the workpiece to be punched is sleeved on the punching section;

3. The structure of claim 2, further comprising a support member, wherein one end of the die core, which is far away from the fixed section, of the die cutting section abuts against or is free from the support member.

4. The inside-out punching structure of a closed cavity according to claim 3, wherein the supporting component comprises: the top block moves along a first direction relative to the mold core and is abutted to or separated from the mold core; one end of the first inclined wedge is connected with the jacking block; the second inclined wedge is arranged at one end, far away from the top block, of the first inclined wedge, the second inclined wedge moves along a second direction to drive the top block to move along a first direction, and the first direction is perpendicular to the second direction.

5. The inside-to-outside punching structure of a closed cavity according to claim 4, wherein a first inclined plane is formed at one end of the first slanting wedge close to the second slanting wedge, a second inclined plane is formed at one end of the second slanting wedge close to the first slanting wedge, and the first inclined plane and the second inclined plane are attached to each other.

6. The inside-to-outside punching structure for the closed cavities according to claim 5, wherein the heights of the first inclined surface and the second inclined surface are gradually increased or decreased along the second direction.

7. The inside-to-outside punching structure of the closed cavity according to claim 4, wherein the lower die is further provided with two limiting blocks which are respectively arranged at two ends of the top block, the limiting blocks are provided with first limiting parts, and two ends of the top block are respectively provided with a second limiting part; the first limiting part is arranged above the second limiting part, and a spring is arranged between the first limiting part and the second limiting part.

8. The inside-to-outside punching structure of a closed cavity according to claim 4, further comprising a driving cylinder for driving the second wedges to slide along the second direction.

9. The structure for punching the closed cavity from inside to outside according to claim 4, wherein the upper die is provided with a plurality of first striking blocks, and the plurality of first striking blocks and the plurality of elastic pieces are symmetrical about the fixed section;

10. The inside-to-outside punching structure of the closed cavity according to claim 2, wherein a pressure plate is further arranged between the upper die and the punching section, and the pressure plate is fixedly connected with the upper die.