CN114130898B

CN114130898B - Stamping die

Info

Publication number: CN114130898B
Application number: CN202010921949.0A
Authority: CN
Inventors: 李欢迎; 杨丁丁; 赵晓柏; 姚海涛; 赵朋辉
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2023-07-21
Anticipated expiration: 2040-09-04
Also published as: CN114130898A

Abstract

The invention is suitable for the technical field of stamping equipment, and provides a stamping die which comprises an upper die assembly, a lower die assembly and a core pressing assembly, wherein the upper die assembly comprises an upper die holder and an upper sliding block, the upper die holder is used for moving along a first direction, the upper sliding block is arranged on the upper die holder, and the core pressing assembly comprises an outer core pressing part, a base, a lower sliding block, an inner core pressing part and an insert. According to the stamping die, the outer pressing core which is used for pressing the workpiece along the first direction and the inner pressing core which can extend along the second direction and press the workpiece in the outer pressing core are arranged, so that the workpiece can obtain two pressing clamping forces along the first direction and the second direction, the workpiece is prevented from moving during stamping along the first direction or the second direction, the processing precision and quality of the workpiece are improved, and the inner pressing core is arranged in the outer pressing core in a sliding manner, so that the die structure is more compact and reasonable; and meanwhile, when the mold is used for processing the side wall outer plate, the side impact quality of the oil filler can be improved.

Description

Stamping die

Technical Field

The invention belongs to the technical field of stamping equipment, and particularly relates to a stamping die.

Background

The automobile is provided with two side wall outer plates, wherein one side wall outer plate is provided with an oil filling port which is a side flushing port, namely, the central axis of the oil filling port is not vertical to the side wall outer plate. The trimming (or shaping) and trimming and punching of the side wall outer plate with the oil filler is usually carried out by punching metal plates by adopting a set of dies.

The applicant found that when a set of dies is used for trimming (or shaping) the side wall outer plate and the oil filler, the quality of repairing the oil filler is often poor due to the sliding of the metal plate caused by side impact. If trimming (or shaping) operation of the side wall outer plate is finished on one set of the dies, and then trimming and flushing operation of the oil filler is finished on the other set of the dies, time is wasted due to die replacement, and the processing efficiency is low.

Disclosure of Invention

The invention aims to provide a stamping die, which aims to solve or at least improve the technical problem of poor side impact quality of an oil filler when a set of stamping die is used for trimming or shaping a side wall outer plate in the prior art to a certain extent.

In order to achieve the above object, the present invention provides a stamping die, including: including last mould subassembly, lower mould subassembly and core pressing subassembly, go up the mould subassembly including be used for along the upper die base of first direction removal and install in go up the slider on the upper die base, it has first sliding surface to go up the slider, core pressing subassembly includes:

the outer pressing core is in sliding fit with the upper die holder along the first direction in a stroke way, and is provided with an outer pressing core through cavity;

the base is arranged in the outer pressure core through cavity in a sliding way with a stroke along the second direction;

the lower sliding block is fixed on the base and is provided with a second sliding surface which is in sliding fit with the first sliding surface and is arranged in parallel, and the second sliding surface is arranged perpendicular to the second direction;

the inner pressure core is positioned at the lower part of the base and is in sliding fit with the base in a stroke way along the second direction, the inner pressure core is also arranged in the outer pressure core through cavity in a sliding way along the second direction, and the inner pressure core is provided with an inner pressure core through cavity for abutting against the workpiece along the second direction after the outer pressure core abuts against the workpiece; and

and the insert is arranged at the lower part of the base, is arranged in the inner pressure core through cavity in a sliding manner along the second direction, and is used for extending out of the inner pressure core through cavity along the second direction to execute punching or blanking operation after the inner pressure core is abutted against the workpiece along the second direction.

Further, the stamping die further comprises a driver arranged on the upper die holder, a power output end of the driver is connected with the upper sliding block and used for driving the upper sliding block to slide along a third direction so that the first sliding surface and the second sliding surface are in sliding fit or stop sliding fit.

Further, the driver is an air cylinder, the cylinder body of the air cylinder is fixedly arranged on the upper die holder, and the piston rod of the air cylinder is connected with the upper sliding block.

Further, a sliding groove for the upper sliding block to slide along the third direction is formed in the upper die holder.

Further, the first direction is a vertical direction, the second direction and the vertical direction are inclined directions with an included angle, and the third direction is a direction parallel to a horizontal plane.

Further, the press core assembly further comprises a first return elastic piece, and the first return elastic piece is used for enabling the base to reset to a preset initial position in the through cavity of the outer press core after the operation is completed; and two ends of the first return elastic piece are respectively installed or abutted on the base and the external pressure core.

Further, the press core assembly further comprises a second return elastic piece, wherein the second return elastic piece is used for resetting the inner press core to a preset initial position relative to the base after the operation is completed; and two ends of the second return elastic piece are respectively installed or abutted on the base and the internal pressure core.

Further, a first abutting part and a second abutting part which are respectively used for abutting and limiting the base are arranged on the external pressing core, the first abutting part is positioned at the lower part of the base, and the second abutting part is positioned at the upper part of the base;

the outer pressure core is further provided with a third abutting part for limiting the abutting of the inner pressure core, and the third abutting part is positioned at the lower part of the inner pressure core.

Further, a first guide sliding block part is arranged on the base, and a first guide sliding surface part which is in sliding fit with the first guide sliding block part is arranged on the inner wall of the through cavity of the outer pressing core.

Further, a second guide sliding block part is arranged on the inner pressure core, and a second guide sliding block part which is in sliding fit with the second guide sliding block part is arranged on the inner wall of the through cavity of the outer pressure core.

Compared with the prior art, the stamping die provided by the invention has the advantages that the external pressing core which presses the workpiece along the first direction and the internal pressing core which can extend along the second direction in the external pressing core are arranged, so that the workpiece can obtain two pressing clamping forces along the first direction and the second direction, the workpiece is prevented from moving during stamping along the first direction or the second direction, the processing precision and quality of the workpiece are improved, and the internal pressing core is arranged in the external pressing core in a sliding manner, so that the die structure is more compact and reasonable; and meanwhile, when the mold is used for processing the side wall outer plate, the side impact quality of the oil filler can be improved.

Drawings

Fig. 1 is a schematic diagram of a stamping die according to an embodiment of the present invention;

FIG. 2 is a second schematic diagram of a stamping die according to an embodiment of the present invention;

FIG. 3 is a third schematic diagram of a stamping die according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the cooperation between the upper mold assembly and the driver in FIG. 3;

fig. 5 is an exploded schematic view of main components (outer core, inner core, insert and base) in a core assembly of a stamping die according to an embodiment of the present invention;

FIG. 6 is one of the schematic diagrams of the outer pressure core of FIG. 5;

FIG. 7 is a second schematic view of the outer pressing core of FIG. 5;

FIG. 8 is one of the schematic diagrams of the inner pressure core of FIG. 5;

FIG. 9 is a second schematic view of the inner pressure core of FIG. 5;

FIG. 10 is one of the schematic views of the insert and base of FIG. 5 in combination;

fig. 11 is a second schematic view of the insert and base of fig. 5 mated.

In the figure: 100. an upper die assembly; 110. an upper die holder; 120. an upper slider; 130. a limiting block; 140. a stop block; 200. a core pressing assembly; 210. an external pressing core; 211. a first abutting portion; 212. a second abutting portion; 213. a third abutting portion; 214. the external pressure core is communicated with the cavity; 215. a first slide guiding surface portion; 216. a second slide guiding face portion; 217. guide sleeve; 220. internal pressure core; 221. a second guide block portion; 222. the inner pressure core is communicated with the cavity; 223. bolt holes; 224. a third slide guiding face portion; 230. an insert; 240. a base; 241. a first guide block portion; 242. a third guide slider portion; 243. a guide post; 244. a boss; 250. a lower slide block; 260. a first return elastic member; 270. a second return elastic member; 280. core pressing bolts; 300. a lower die assembly; 310. a lower die insert; 400. a side pin; 500. an upper die elastic member; 600. a driver; 700. a waste skateboard; 800. a product; A. a first direction; B. a second direction; C. and a third direction.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the meaning of "a plurality of", "a number" is two or more, unless explicitly defined otherwise.

Fig. 1 and 8 relate to a stamping die provided in an embodiment of the present invention, and for convenience of explanation, a direction a corresponds to a first direction, a direction B corresponds to a second direction, and a direction C corresponds to a third direction. In addition, fig. 1 to fig. 7 relate to structures such as an upper die holder, an external pressing core or a lower die assembly in the stamping die provided by the embodiment of the invention, wherein the upper die holder, the external pressing core or the lower die assembly shown in fig. 1 is all (size) structures of the upper die holder, the external pressing core or the lower die assembly; in order to better illustrate the structure of the invention in this embodiment, the upper die holder, the outer die core or the lower die assembly illustrated in fig. 2 to 7 is actually a part of the structure of the upper die holder, the outer die core or the lower die assembly.

Referring to fig. 1 to 11, an embodiment of a stamping die provided by the present invention will now be described. The stamping die comprises an upper die assembly 100, a lower die assembly 300 and a pressing core assembly 200. The upper die assembly 100 includes an upper die holder 110 and an upper slider 120 mounted on the upper die holder 110, and the upper die holder 110 is movable in a first direction by an external device (e.g., a press, etc.). The lower die assembly 300 may be constructed using a conventional lower die structure.

The core assembly 200 includes an outer core 210, a base 240, a lower slider 250, an inner core 220, and an insert 230.

The outer press core 210 is in sliding fit with the upper die holder 110 along the first direction, that is, the outer press core 210 is driven by the upper die holder 110, and in the first direction, the outer press core 210 can also slide relative to the upper die holder 110 along a certain stroke. The outer pressure core 210 has an outer pressure core through cavity 214 with two open ends at the position corresponding to the side-impact oil filler.

The base 240 is slidably disposed in the outer pressing core through cavity 214 with a (certain) stroke along the second direction, that is, in the second direction, the base 240 can slide in the outer pressing core through cavity 214 with a certain stroke.

The lower slider 250 is fixed on the base 240, the lower slider 250 has a second sliding surface for sliding fit with the first sliding surface of the upper die holder 110, the first sliding surface and the second sliding surface are parallel, the second sliding surface is perpendicular to the second direction, and when the first sliding surface and the second sliding surface slide relatively, the lower slider 250 and the base 240 move relatively to the outer die core 210 along the second direction.

The inner pressure core 220 is located at the lower portion of the base 240 and is in a sliding fit with the base 240 in a stroke in the second direction, that is, the inner pressure core 220 is driven by the base 240, but in the second direction, the inner pressure core 220 can also be moved in a stroke with respect to the base 240. Meanwhile, since the base 240 itself can move in the second direction in the outer core through cavity 214, the inner core 220 can also move relatively in the second direction with respect to the outer core 210 along with the base 240, that is, the inner core 20 is also slidably disposed in the outer core through cavity 214 in the second direction. The inner core 220 has an inner core through cavity 222 opened at both ends.

The insert 230 is mounted on the lower portion of the base 240, and the insert 230 is slidably disposed in the inner core through cavity 222 in the second direction.

Taking the processing of the side body outer panel of the automobile as an example, when the stamping die provided in the embodiment of the present invention is used, the workpiece 800 (i.e., the side body outer panel) is located between the upper die assembly 100 and the lower die assembly 300, the outer pressing core is located at a preset initial position with respect to the upper die holder 110 before the trimming or shaping operation, the base 240 is located at a preset initial position in the outer pressing core through cavity 214, and the inner pressing core 220 is also located in the outer pressing core through cavity 214 and at a preset initial position with respect to the base 240.

Of course, the upper die holder 110 is not only provided with the upper slider 120 for driving the lower slider 250, but also provided with other punching structures for trimming or shaping the workpiece 800, and other punching structures on the upper die holder 110 belong to the prior art and are not described herein.

The upper die holder 110 moves toward the workpiece 800 along the first direction, and the upper die holder 110 also drives the core assembly 200 to move toward the workpiece 800 along the first direction, and in this process, the upper slider 120 and the lower slider 250 do not slide relatively.

After that, the outer pressing core 210 is firstly contacted with and abutted against the workpiece 800, and the outer pressing core 210 is stationary relative to the workpiece 800, that is, the outer pressing core 210 presses the workpiece 800 along the first direction, at this time, other punching structures of the upper die holder 110 can perform trimming or shaping punching on the workpiece 800 except for the side punching oil filler along the first direction.

The upper die holder 110 is then moved closer to the workpiece 800 along the first direction, and at this time, the outer core 210 is moved away from the predetermined initial position relative to the upper die holder 110, the upper slider 120 and the lower slider 250 slide relatively, and the lower slider 250 slides relative to the upper slider 120, and at the same time, the lower slider 250, the base 240, the insert 230 and the inner core 220 are moved closer to the workpiece 800 along the second direction, and the base 240 is moved away from the predetermined initial position in the outer core cavity 214. The upper die holder 110 continues to approach the article 800 in the first direction, and the lower slider 250, the base 240, the insert 230, and the internal pressure core 220 continue to approach the article 800 in the second direction until the internal pressure core 220 contacts and abuts the article 800 in the second direction, and the internal pressure core 220 is stationary relative to the article 800. Thus, the outer core 210 is pressed between 800 in the first direction, and the inner core 220 is pressed against the article 800 in the second direction.

The upper die holder 110 then approaches the workpiece 800 in the first direction, and the lower slider 250 continues to slide relative to the upper slider 120, because the inner core 220 is stationary relative to the workpiece 800, and the base 240 and the insert 230 slide relative to the inner core 220 and the workpiece 800 in the second direction, and the inner core 220 is also moved away from the predetermined initial position relative to the base 240, and the base 240 drives the insert 230 to extend out of the inner core through cavity 222 in the second direction to perform the side-punching operation.

The second direction is actually the direction of the side impact of the process filler, and applicant has found that the insert 230 imparts a component to the article 800 that is not perpendicular to the first direction, which component can cause the article 800 to shift, which is a cause of poor side impact quality. The pressing of the inner core 220 against the workpiece 800 in the second direction increases a clamping force in the second direction to the workpiece 800, where the clamping force in the second direction may be that the portion of the workpiece 800 receiving the side impact is stably clamped, and the workpiece 800 will not play, so as to improve the quality of the side impact of the oil filler.

After the side punching and trimming or shaping operations of the stamping die provided in the embodiment of the present invention are completed, the upper die holder 110 is away from the workpiece 800 along the first direction, and the core assembly 200 is also away from the workpiece 800, in this process, the outer core 210 is reset to the preset initial position relative to the upper die holder 110 by means of some reset structures or gravity, the inner core 220 is reset to the preset initial position relative to the base 230 by means of some reset structures or gravity, and the base 230 is reset to the preset initial position in the outer core through cavity 214 by means of some reset structures or gravity.

It should be understood that, of course, the stamping die provided in the embodiment of the present invention can also be applied to other sheet metal stamping processes (i.e., the stamping die provided in the embodiment of the present invention can also be applied to the complex working occasions of trimming, punching, flanging, shaping and combining with each other), and the description of the above use process is only one of the occasions of the stamping die application provided in the embodiment of the present invention.

Compared with the prior art, the stamping die provided by the embodiment of the invention has the advantages that the external pressing core which presses the workpiece along the first direction and the internal pressing core which can extend along the second direction in the external pressing core are arranged, so that the workpiece can obtain two pressing clamping forces along the first direction and the second direction, the workpiece is prevented from moving during stamping along the first direction or the second direction, the processing precision and quality of the workpiece are improved, and the internal pressing core is arranged in the external pressing core in a sliding manner, so that the die structure is more compact and reasonable; and meanwhile, when the mold is used for processing the side wall outer plate, the side impact quality of the oil filler can be improved.

Referring to fig. 3 and fig. 4, as a specific embodiment of the stamping die provided by the present invention, the stamping die provided by the embodiment of the present invention further includes a driver 600 mounted on the upper die holder 110. The power output end of the driver 600 is connected to the upper slider 120, and the driver 600 drives the upper slider 120 to slide along the third direction, so that the first sliding surface of the upper slider 120 and the second sliding surface of the lower slider 250 are in sliding fit or stop sliding fit.

The side wall planking of car has two, and one of them is equipped with the oil filler hole, and another does not have the oil filler hole. In order to enable the stamping die provided by the embodiment of the invention to select to conduct side-impact oil filling openings or to conduct side-impact oil filling openings carelessly according to requirements in trimming or shaping, a driver 600 is specially added, and therefore the stamping die provided by the embodiment of the invention can process two side-wall outer plates.

When the side wall outer plate with the oil filler needs to be processed, the driver 600 is driven to enable the upper sliding block 120 to be in contact with the lower sliding block 250, so that the sliding fit of the first sliding surface and the second sliding surface can be realized, and the side wall outer plate can be subjected to side flushing of the oil filler during trimming or shaping. When it is desired to machine a side gusset outer panel without a filler, the driver 600 is driven to shift the first sliding surface from the second sliding surface, so that when the upper die holder 110 approaches the side gusset outer panel in the first direction, only the outer press core 210 abuts against and presses the side gusset outer panel, and none of the base 240, the inner press core 220 and the insert 230 moves relative to the outer press core 210 in the second direction, so that trimming or trimming is completed only by other press structures on the upper die holder 110, and no side impact is performed.

According to the stamping die provided by the embodiment of the invention, the base 240 and the inner pressure core 220 are arranged in the outer pressure core 210 in a sliding manner, the insert 230 is arranged in the inner pressure core 200 in a sliding manner, the inner pressure core 220 is optionally pressed against the workpiece 800 along the second direction by arranging the lower slide block 250 connected with the power output end of the driver 600, and the insert 230 is optionally extended out of the outer pressure core 210 and the inner pressure core 220 to perform side punching operation, so that the stamping die provided by the embodiment of the invention can finish trimming or trimming operation of two side wall outer plates, and the adaptability and the utilization rate of the die are improved.

Referring to fig. 1, as a specific embodiment of the stamping die provided by the present invention, the upper die holder 110 is provided with a long hole along a first direction, the outer pressing core 210 is provided with a side pin 400, and the side pin 400 is slidably disposed in the long hole. The sliding fit of the outer pressing core 210 and the upper die holder 110 along the first direction by the sliding fit of the side pin 400 in the elongated hole is realized, so that after the outer pressing core 210 contacts and presses the workpiece 800, the upper die holder 110 can still move along the first direction relative to the outer pressing core 210, so as to drive the base 240 to move along the second direction. The mating structure of the side pin 400 and the elongated hole is conventional and will not be described in detail herein.

Referring to fig. 1, as a specific embodiment of the stamping die provided by the present invention, the upper die holder 110 and the outer core 210 are provided with an upper die elastic member 500, so that the outer core 210 can be reset to a preset initial position relative to the upper die holder 110 after the operation is completed.

As a specific embodiment of the stamping die provided by the present invention, the upper die elastic member 500 may be an elastic structure such as a spring, a nitrogen cylinder, or a combination of elastic structures.

Referring to fig. 3 and 4, as a specific embodiment of the stamping die provided by the present invention, the driver 600 is a cylinder, and the cylinder is connected to the external air path to provide kinetic energy to the cylinder. The cylinder body of the air cylinder is fixedly arranged on the upper die holder 110, and the piston rod of the air cylinder is connected with the upper sliding block 120.

Referring to fig. 4, as a specific embodiment of the stamping die provided by the present invention, a chute for sliding the upper slider 120 along the third direction is provided on the upper die holder 110. The slide groove may provide a guiding function for the sliding of the upper slider 120 in the third direction.

Referring to fig. 4, as a specific embodiment of the stamping die provided by the present invention, the upper slider 120 is disposed on a fixed block, the fixed block is directly connected to the power output end of the driver 600, and the fixed block is slidably disposed in the chute. The upper die holder 110 is provided with two stoppers 140, and a chute is formed between the two stoppers.

Referring to fig. 3 and fig. 4, as a specific embodiment of the stamping die provided by the present invention, two upper sliders 120 are disposed on the fixing block, and two lower sliders 250 are correspondingly disposed.

As a specific implementation mode of the stamping die, the first direction is a vertical direction, the second direction and the vertical direction form an inclined direction with an included angle, and the third direction is a certain direction parallel to the horizontal plane. In the process of manufacturing the side outer panel, the second direction is the side impact direction of the fuel filler, and the upper slider 120 can move back and forth in the third direction to make contact with or be staggered from the lower slider 250.

Referring to fig. 10 and 11, as a specific embodiment of the stamping die provided by the present invention, the press core assembly 200 further includes a first return elastic member 260, where the first return elastic member 260 is used to reset the base 240 after the completion of the operation to a preset initial position in the outer press core through cavity 214. The first return elastic member 260 is mounted on or abutted against the base 240 and the outer pressing core 210 at both ends thereof, respectively. The first return elastic member 260 may be a nitrogen cylinder or a spring or a combination of elastic structures.

Referring to fig. 10 and 11, as a specific embodiment of the stamping die provided by the present invention, the press core assembly 200 further includes a second return elastic member 270, where the second return elastic member 270 is used to elastically connect the inner press core 220 with the base 240, and is used to reset the inner press core 220 to a preset initial position relative to the base 240 after the operation is completed. Both ends of the second return elastic member 270 are respectively mounted or abutted on the base 240 and the inner pressure core 220. The second return spring 270 may be a nitrogen cylinder or a spring or a combination of resilient structures.

Referring to fig. 6 and fig. 7, as a specific embodiment of the stamping die provided by the present invention, the outer pressing core 210 is provided with a first abutting portion 211 and a second abutting portion 212 for respectively abutting and limiting the base 240, the first abutting portion 211 is located at the lower portion of the base 240, and the second abutting portion 212 is located at the upper portion of the base 240. The first abutting portion 211 and the second abutting portion 212 are used for realizing that the base 240 is slidably disposed in the outer pressing core through cavity 214 along the second direction in a stroke manner, and the first abutting portion 211 and the second abutting portion 212 respectively form a lower limit and an upper limit of the base 240.

Referring to fig. 6 and fig. 7, as a specific embodiment of the stamping die provided by the present invention, the second abutting portion 212 is two baffles, and a gap is provided between the two baffles, so that the upper slider 120 is slidably engaged with the lower slider 250 after passing through the gap.

Referring to fig. 6 and fig. 7, as a specific embodiment of the stamping die provided by the present invention, the second abutting portion 212 is a fixed stop structure disposed in the outer pressing core through cavity 214, and the second abutting portion 212 may abut against the base 240 or be used to abut against a certain structure on the first return elastic member 260 to limit the base 240.

Referring to fig. 6 and fig. 7, as a specific embodiment of the stamping die provided by the present invention, the outer pressing core 210 is further provided with a third abutting portion 213 for limiting the abutting of the inner pressing core 220, and the third abutting portion 213 is located at the lower portion of the inner pressing core 220. The third abutting portion 213 is mainly configured to limit the travel of the inner core 220 in the outer core through cavity 214, so as to prevent the inner core 220 from extending out of the outer core through cavity 214 (too much) to crush the product 800.

Referring to fig. 6 and 7, as a specific embodiment of the stamping die provided by the present invention, the third abutting portion 213 may be a flanging structure disposed at the lower port of the outer pressing core through cavity 214, and the flanging structure is disposed on the inner wall of the outer pressing core through cavity 214 and extends toward the center of the outer pressing core through cavity 214.

Referring to fig. 6, 7, 10 and 11, as a specific embodiment of the stamping die provided by the present invention, a first guiding and sliding block portion 241 is provided on the base 240, and a first guiding and sliding surface portion 215 slidably engaged with the first guiding and sliding block portion 241 is provided on an inner wall of the outer pressing core through cavity 214. The sliding fit of the first guide slider portion 241 and the first guide sliding surface portion 215 can provide a guiding function for the base 240 to slide in the second direction within the outer press core through cavity 214.

Referring to fig. 6, 7, 10 and 11, as a specific embodiment of the stamping die provided by the present invention, the base 240 is provided with a guide post 243, the outer pressing core 210 is provided with a guide sleeve 217, the guide post 243 is slidably disposed in the guide sleeve 217, and the sliding fit of the guide post 243 in the guide sleeve 217 can provide a guiding effect for the base 240 to slide in the outer pressing core through cavity 214 along the second direction.

Referring to fig. 8 to 11, as a specific embodiment of the stamping die provided by the present invention, the inner pressure core 220 is provided with a second guiding and sliding block portion 221, and the inner wall of the outer pressure core through cavity 214 is provided with a second guiding and sliding surface portion 216 slidably engaged with the second guiding and sliding block portion 222. The sliding fit of the second guide slider portion 221 and the second guide slider portion 216 can provide a guiding function for the inner core 220 to slide in the second direction within the outer core through cavity 214.

Referring to fig. 8 to 11, as a specific embodiment of the stamping die provided by the present invention, a third guiding and sliding block portion 242 is disposed on the base 240, a third guiding and sliding surface portion 224 slidably engaged with the third guiding and sliding block portion 242 is disposed on an inner wall of the inner core 220, and the sliding engagement between the third guiding and sliding block portion 242 and the third guiding and sliding surface portion 224 can provide guiding function for the relative sliding of the inner core 220 and the base 240 along the second direction.

Referring to fig. 8 to 11, as a specific embodiment of the stamping die provided by the present invention, the core pressing assembly 220 further includes a core pressing bolt 280, a threaded hole is formed on the base 240 and is in threaded connection with the core pressing bolt 280, the inner pressing core 220 is provided with a countersunk hole 223 adapted to a bolt head of the core pressing bolt 280, the core pressing bolt 280 is long enough, and the core pressing bolt 280 is in threaded connection with the threaded hole after passing through the countersunk hole 223. The core pressing bolt 280 and the counter-sunk hole 223 can realize relative sliding, the core pressing bolt 280 can limit the relative sliding travel of the inner pressing core 220 and the base 240 on one hand, and the core pressing bolt 280 can provide guiding for the relative sliding of the inner pressing core 220 and the base 240 on the other hand.

Referring to fig. 10 to 11, as a specific embodiment of the stamping die provided by the present invention, the base 240 is provided with a boss 244, the outer edge dimension of the boss 244 is smaller than the outer edge dimension of the base 240, and the insert 230 is fixed on the boss 244. The third guide slider portion 242 is fixed to a side portion of the boss 244, and the first guide slider portion 241 is provided to a side portion of the base 240.

Referring to fig. 1 to 3, as a specific embodiment of the stamping die provided by the present invention, the stamping die further includes a scrap slide 700, and the scrap slide 700 is located at a lower portion of the lower die assembly 300 and is connected to the lower die assembly 300 for receiving stamping scrap.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. Stamping die, including last mould subassembly, lower mould subassembly and press core subassembly, go up the mould subassembly including be used for along the upper die base of first direction removal and install in go up the slider on the upper die base, go up the slider and have first sliding surface, first direction is vertical direction, its characterized in that, press core subassembly includes:

the base is arranged in the outer pressure core through cavity in a sliding way with a stroke along a second direction, and the second direction is an inclined direction which is arranged at an included angle with the vertical direction;

and the insert is arranged at the lower part of the base, is arranged in the inner pressure core through cavity in a sliding manner along the second direction, and is used for extending out of the inner pressure core through cavity along the second direction to execute stamping operation after the inner pressure core is abutted against the workpiece along the second direction.

2. The stamping die of claim 1, further comprising a driver mounted on the upper die base, wherein a power output end of the driver is connected to the upper slider for driving the upper slider to slide in a third direction to achieve or stop sliding engagement of the first sliding surface and the second sliding surface, and the third direction is a direction parallel to a horizontal plane.

3. The stamping die of claim 2, wherein the driver is a cylinder, a cylinder body of the cylinder is fixedly arranged on the upper die holder, and a piston rod of the cylinder is connected with the upper sliding block.

4. The stamping die of claim 2, wherein the upper die holder is provided with a chute for sliding the upper slider along the third direction.

5. The stamping die of any one of claims 1-4, wherein the core assembly further comprises a first return spring for resetting the base after completion of the operation to a predetermined initial position within the outer core cavity; and two ends of the first return elastic piece are respectively installed or abutted on the base and the external pressure core.

6. The stamping die of any one of claims 1-4, wherein the press core assembly further comprises a second return spring for resetting the inner press core to a preset initial position relative to the base after completion of the operation; and two ends of the second return elastic piece are respectively installed or abutted on the base and the internal pressure core.

7. The stamping die according to any one of claims 1 to 4, wherein a first abutting portion and a second abutting portion for respectively abutting and limiting the base are provided on the outer pressing core, the first abutting portion is located at a lower portion of the base, and the second abutting portion is located at an upper portion of the base;

8. The stamping die of any one of claims 1-4, wherein a first guide block portion is provided on the base, and a first guide surface portion in sliding fit with the first guide block portion is provided on an inner wall of the outer press core through cavity.

9. The stamping die of any one of claims 1-4, wherein a second guiding slide block part is arranged on the inner pressure core, and a second guiding slide block part which is in sliding fit with the second guiding slide block part is arranged on the inner wall of the through cavity of the outer pressure core.