CN212494863U

CN212494863U - Negative clearance stamping device

Info

Publication number: CN212494863U
Application number: CN202021112193.7U
Authority: CN
Inventors: 钱忠
Original assignee: Dongguan Mingrui Precision Hardware Technology Co ltd
Current assignee: Dongguan Mingrui Precision Hardware Technology Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-02-09
Anticipated expiration: 2030-06-16

Abstract

The utility model discloses a negative clearance stamping device, including the upper die assembly and the lower die assembly that the fastening face corresponds the setting, in the upper die assembly, correspondingly be provided with negative clearance mold insert, terrace die on the fastening face of lower die assembly, the negative clearance mold insert includes first punching press section, and centers on the steady material section that first punching press section extends the setting, the lower terminal surface of first punching press section is provided with the terrace die and dodges the groove, and the height of steady material section is more than or equal to the height that the groove was dodged to the terrace die; the male die comprises an integrally formed mounting section and a second stamping section, the second stamping section is matched with the male die avoiding groove, and the height of the second stamping section is smaller than or equal to that of the male die avoiding groove. The utility model discloses a negative clearance punching press mode through combining to use negative clearance mold insert and terrace die, realizes carrying out perpendicular stamping process to the finished piece material area steadily, avoids making the two-sided burr or damage problem that appears of finished piece because of the punching press extension, and the stamping forming precision is high.

Description

Negative clearance stamping device

Technical Field

The utility model belongs to the technical field of stamping device technique and specifically relates to a negative clearance stamping device.

Background

Now, with the development of hardware product processing technology, a stamping technology appears, and the technology has the characteristics of high production efficiency, convenience in operation and large range of machinable shapes and sizes, and further leads out the traditional stamping device at present. However, in the current stamping device, since a single punch is used for stamping, in the stamping process, the punch completely extrudes a workpiece without limitation, so that the workpiece is easy to have stamping process defects such as burrs and the like, and burr pressing or grinding and other modes are generally adopted for processing the burrs, so that the size precision of the workpiece is easily influenced in the deburring process, the number of dies is directly increased, and the production cost is increased, and the pressure of energy consumption and environmental protection is caused.

Therefore, the market needs a stamping device which can effectively improve the stamping quality, so that the workpiece can be stamped stably with high precision, and the stamped workpiece can be free of burrs on two sides.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provides a negative clearance stamping device to the problem among the above-mentioned prior art, this negative clearance stamping device improves the punching press quality effectively to realize the two-sided no burr of finished piece after the punching press.

In order to solve the technical problem, the utility model adopts a technical scheme that the negative clearance stamping device comprises an upper die component and a lower die component which are arranged corresponding to a fastening surface, and the upper die component and the lower die component are guided and positioned through a plurality of guide pillars;

the lower die assembly comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are fixedly connected with the lower die assembly through a bolt, the lower die assembly is fixedly connected with the lower die assembly through a bolt, the upper die assembly and the lower die assembly are fixedly connected with the lower die assembly through bolts, the lower die assembly is fixedly connected with the lower die assembly through bolts, and the upper die assembly and the lower die assembly are fixedly connected with the lower die assembly through bolts;

the male die comprises an integrally formed mounting section and a second stamping section, the second stamping section is matched with the male die avoiding groove, and the height of the second stamping section is smaller than or equal to that of the male die avoiding groove.

As a further elaboration of the above technical solution:

in the technical scheme, a material belt placing groove for placing a material belt of a workpiece is horizontally arranged on the fastening surface of the lower die assembly, and the male die is arranged below the material belt placing groove corresponding to the negative gap insert.

In the technical scheme, a blanking punch is arranged on one side of the negative gap insert along the material moving direction of the material belt placing groove, and the lower end face of the blanking punch is flush with the lower end face of the material stabilizing section.

In the above technical scheme, a step positioning block is arranged at the discharge end of the material belt placing groove, and the step positioning block comprises a fixed section arranged on the lower die assembly and a limiting section extending towards the material belt placing groove.

In the above technical scheme, in go up the last correspondence of mould assembly the material area standing groove is provided with the waste material cutter, the waste material cutter includes integrated into one piece's die-cut section and dodges the section, the die-cut section is provided with the die-cut inclined plane that is used for blanking finished piece material area, just dodge the section and be provided with the chamber of dodging that is used for dodging finished piece material area, the die-cut section with distance between the spacing section equals the width in finished piece material area.

In the technical scheme, the upper die assembly comprises an upper die base, an upper clamp plate, a stop plate and an upper stripping plate which are sequentially arranged from top to bottom, the upper clamp plate is connected with the stop plate through an elastic connecting piece, a negative gap insert is embedded in the upper stripping plate, and the waste material cutter longitudinally penetrates through the stop plate and the upper stripping plate and is arranged on the upper clamp plate.

In the above technical scheme, an upper base plate is arranged between the upper die holder and the upper clamping plate.

In the above technical scheme, the lower die assembly comprises a lower die plate and a lower die holder which are sequentially arranged from top to bottom, the material belt placing groove is formed in the lower die plate, and the mounting section is embedded in the lower die plate.

In the above technical scheme, a lower cushion plate is arranged between the lower die base and the lower die plate.

In the technical scheme, a plurality of lower cushion feet are arranged below the lower die base at intervals.

The utility model has the advantages that the utility model adopts a negative clearance stamping mode, and realizes the stable vertical stamping processing of the material belt of the workpiece by combining the negative clearance insert and the male die, thereby avoiding the problem of burr or damage on the two sides of the workpiece caused by stamping extension, wherein the second stamping section is matched with the male die avoiding groove, ensuring that the two sides of the workpiece have no burr and the planeness reaches the standard, improving the stamping forming precision, and the material stabilizing section presses and fixes the material belt of the workpiece, thereby ensuring that the stamping quality and the stamping effect can not be influenced by shaking in the stamping process; the technology of punch forming, blanking and blanking is realized at the same time, the processing efficiency is further improved, and the damage to the material belt of the workpiece is avoided; in addition, the step positioning block positions the material belt of the workpiece, so that the workpiece is ensured to be punched and formed in the same position in the punching area, the processing consistency of the workpiece is ensured, the workpiece material belt is prevented from shifting due to punching, the punching groove precision is high, and the punching efficiency and precision can be ensured in batch production.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a bottom view of the upper die assembly of the present invention;

fig. 3 is a plan view of the lower die assembly of the present invention;

fig. 4 is a cross-sectional view of the negative clearance insert and the male mold of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Fig. 1-4 realize a specific embodiment of a negative clearance stamping device, refer to fig. 1-4, a negative clearance stamping device, it includes last mould subassembly and the lower mould subassembly of the corresponding setting of fastening face, go up the mould subassembly with lower mould subassembly carries out guiding orientation through a plurality of guide pillars 9, so that go up the mould subassembly and reciprocate steadily in stamping process, and then carry out the punching press to the finished piece material area steadily.

The lower die assembly comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are respectively provided with a negative clearance insert 1 and a male die 5, the negative clearance insert 1 comprises a first stamping section 11 and a material stabilizing section 12 which extends around the first stamping section 11, the lower end surface of the first stamping section 11 is provided with a male die avoiding groove 13, and the height of the material stabilizing section 12 is greater than or equal to that of the male die avoiding groove 13; terrace die 5 includes integrated into one piece's installation section 51 and second punching press section 52, second punching press section 52 with the groove 13 looks adaptation is dodged to the terrace die, just second punching press section 52 highly be less than or equal to the height that the groove 13 was dodged to the terrace die, at the punching press in-process, the steady material section 12 at first compresses tightly fixedly to the finished piece material area, ensures can not rock and influence the punching press effect, passes through simultaneously the terrace die dodge the groove 13 with the cooperation of first punching press section 11 realizes carrying out perpendicular punching press processing steadily to the finished piece material area, avoids extending because of the punching press and makes the finished piece appear the problem of burr or damage.

Preferably, a material belt placing groove 6 for placing a material belt of a workpiece is horizontally arranged on the fastening surface of the lower die assembly, the male die 5 is arranged below the material belt placing groove 6 corresponding to the negative gap insert 1, and when the material belt of the workpiece to be stamped moves to the position above the male die 5, the male die 5 and the male die avoiding groove 13 are ensured to be aligned accurately in the stamping process, so that the stamping precision and quality are improved.

Furthermore, a blanking punch 2 is arranged on one side of the negative gap insert 1 along the material moving direction of the material belt placing groove 6, the lower end face of the blanking punch 2 is flush with the lower end face of the material stabilizing section 12, and the stamping face of the blanking punch 2 is matched with the structure of the material belt of the workpiece, so that the material belt of the workpiece is blanked when the stamping is completed, the workpiece material belt is prevented from being damaged, and the stamping efficiency is improved.

Preferably, a step positioning block 7 is arranged at the discharge end of the material belt placing groove 6, the step positioning block 7 comprises a fixing section arranged on the lower die assembly and a limiting section extending towards the material belt placing groove 6, the part of the finished product material belt which is punched moves to the limiting section and is abutted tightly, the part of the finished product material belt which is to be punched is ensured to be accurately moved to the male die 5, the machining consistency of the finished product is ensured, the punching precision and quality are further improved, and the punching efficiency and precision can be ensured in batch production.

Further, in go up the mould subassembly and go up the correspondence the material area standing groove 6 is provided with waste material cutter 3, waste material cutter 3 includes integrated into one piece's die-cut section and dodges the section, the die-cut section is provided with the die-cut inclined plane that is used for blanking finished piece material area, just dodge the section and be provided with the chamber of dodging that is used for dodging finished piece material area, the die-cut section with distance between the spacing section equals the width in finished piece material area, highly being close to on die-cut inclined plane the stride locating piece 7 is to keeping away from the stride locating piece 7 is gradually big, in stamping process, waste material cutter 3 carries out the blanking to finished piece material area that has accomplished the punching press simultaneously and obtains single finished piece to realize accomplishing the technology of punching press, blanking simultaneously, improve.

Further, the upper die assembly comprises an upper die holder 41, an upper clamping plate 43, a stop plate 44 and an upper stripping plate 45 which are sequentially arranged from top to bottom, the upper clamping plate 43 is connected with the stop plate 44 through an elastic connecting piece, the negative clearance insert 1 is embedded in the upper stripping plate 45, and the waste material cutter 3 longitudinally penetrates through the stop plate 44 and the upper stripping plate 45 and is arranged on the upper clamping plate 43; specifically, the elastic connecting piece is a spring, the upper die assembly descends until the upper stripper plate 45 abuts against a workpiece material belt in a notching process, the negative gap insert 1 moves downwards and is matched with the male die 5 to punch and form the workpiece material belt, at the moment, the elastic connecting piece is in a compression state, after the punching is completed, the upper die assembly drives the negative gap insert 1 to move upwards, namely, the elastic connecting piece resets, after the negative gap insert 1 leaves the workpiece material belt, the upper stripper plate 45 still abuts against the workpiece material belt at the moment, and as the upper die assembly continues to move upwards, the upper stripper plate 45 is separated from the workpiece material belt, the upper stripper plate 45 prevents the negative gap insert 1 from moving in the punching process to influence the notching effect and precision, so that the double surfaces of workpieces are free of burrs and the flatness of the workpieces reaches the standard, and the upper stripper plate 45 still abuts against the workpiece material belt when the negative gap insert 1 leaves by utilizing the buffering effect of the elastic connecting piece The finished piece material area, and reduced the impact force between negative clearance mold insert 1 and the material area finished piece, the product uniformity is high, has improved the quality and the yields of product.

Furthermore, an upper padding plate 42 is arranged between the upper die holder 41 and the upper clamping plate 43 to prevent the negative clearance insert 1, the blanking punch 2 and the waste cutter 3 from invading the upper die holder 41, so as to improve the punching strength of the upper die assembly.

Preferably, the lower die assembly comprises a lower die plate 81 and a lower die holder 83 which are sequentially arranged from top to bottom, the material belt placing groove 6 is formed in the lower die plate 81, the mounting section 51 is embedded in the lower die plate 81, the positioning accuracy of the negative gap insert 1 and the male die 5 in the stamping process is ensured, the stamping quality and the stamping accuracy are prevented from being influenced by deviation in die assembly, and good notching efficiency and precision can be ensured in batch production.

Furthermore, a lower cushion plate 82 is arranged between the lower die base 83 and the lower die plate 83, so that the stamping strength of the lower die assembly is improved, and the supporting effect of the male die 5 is enhanced.

Furthermore, a plurality of lower pad feet 84 are arranged below the lower die base 83 at intervals, so that the height of the lower die assembly is increased, the closing stroke of the punching machine is shortened, and the punching efficiency is improved.

The upper die assembly and the lower die assembly in the negative clearance punching device are respectively fixed on a punching machine; placing a material belt of a workpiece to be punched on the material belt placing groove 6, and positioning the material belt of the workpiece by the step positioning block 7; starting the punching machine to drive the upper die assembly to move downwards, operating and using the negative clearance insert 1 to move downwards and abut against the workpiece material belt, and punching the workpiece material belt by matching with the male die 5, wherein at the moment, a region to be punched of the workpiece material belt is vertically extruded and formed under the action of the second punching section 52 and the male die avoiding groove 13, and meanwhile, the waste material cutter 3 punches the punched workpiece material belt into single workpieces; after punching is completed, the punching machine drives the upper die assembly to move upwards, the blanking punch 2 drives the punched workpiece material belt to blank, the negative gap insert 1 moves upwards along with the workpiece material belt until the workpiece material belt is separated, and the single punched workpiece is blanked.

The utility model discloses a negative clearance punching press mode, through using negative clearance mold insert and terrace die jointly, realize carrying out vertical stamping to the finished piece material area steadily, avoid making the two-sided burr of finished piece or the problem of damage appear because of the punching press extends, wherein the groove looks adaptation is dodged with the terrace die to the second punching press section, guarantee that the two-sided no burr of finished piece and plane degree are up to standard, improve stamping forming precision, the stationary part material area is pressed to fastening, guarantee can not rock and influence punching press quality and effect in the punching press process; the technology of punch forming, blanking and blanking is realized at the same time, the processing efficiency is further improved, and the damage to the material belt of the workpiece is avoided; in addition, the step positioning block positions the material belt of the workpiece, so that the workpiece is ensured to be punched and formed in the same position in the punching area, the processing consistency of the workpiece is ensured, the workpiece material belt is prevented from shifting due to punching, the punching groove precision is high, and the punching efficiency and precision can be ensured in batch production.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A negative clearance stamping device is characterized by comprising an upper die assembly and a lower die assembly, wherein fastening surfaces of the upper die assembly and the lower die assembly are correspondingly arranged, and the upper die assembly and the lower die assembly are guided and positioned through a plurality of guide pillars;

2. The negative gap punching device according to claim 1, wherein a material belt placing groove for placing a material belt of a workpiece is horizontally arranged on the fastening surface of the lower die assembly, and the male die is arranged below the material belt placing groove corresponding to the negative gap insert.

3. The negative gap punching device according to claim 2, wherein a blanking punch is disposed on one side of the negative gap insert in a material moving direction of the material belt placing groove, and a lower end surface of the blanking punch is flush with a lower end surface of the material stabilizing section.

4. The negative gap stamping device according to claim 2, wherein a step positioning block is disposed at a discharge end of the material belt placing groove, and the step positioning block includes a fixed section disposed on the lower die assembly and a limiting section extending toward the material belt placing groove.

5. The negative clearance stamping device according to claim 4, wherein a waste cutter is arranged on the upper die assembly corresponding to the material belt placing groove, the waste cutter comprises a punching section and an avoiding section which are integrally formed, the punching section is provided with a punching inclined surface for punching a material belt of a workpiece, the avoiding section is provided with an avoiding cavity for avoiding the material belt of the workpiece, and the distance between the punching section and the limiting section is equal to the width of the material belt of the workpiece.

6. The negative gap punching device according to claim 5, wherein the upper die assembly comprises an upper die base, an upper clamping plate, a stop plate and an upper stripping plate which are arranged in sequence from top to bottom, the upper clamping plate and the stop plate are connected through an elastic connecting piece, the negative gap insert is embedded in the upper stripping plate, and the waste material cutter longitudinally penetrates through the stop plate and the upper stripping plate and is arranged on the upper clamping plate.

7. The negative gap punching apparatus according to claim 6, wherein an upper pad is disposed between the upper die holder and the upper clamp plate.

8. The negative clearance stamping device of claim 4, wherein the lower die assembly comprises a lower die plate and a lower die base which are sequentially arranged from top to bottom, the material belt placing groove is arranged on the lower die plate, and the mounting section is embedded in the lower die plate.

9. The negative gap stamping device of claim 8, wherein a lower backing plate is disposed between the lower die base and the lower die plate.

10. The negative gap punching device of claim 9, wherein a plurality of lower stand-offs are spaced below the lower die base.