CN209697826U - Blade for shredding paper stamping die - Google Patents

Abstract

The utility model discloses a shredding blade stamping die, which comprises a lower stamping die, an upper stamping die, a fixture turntable and a turntable drive mechanism. The material distribution station, the fine punching station and the blanking station, the pre-punching station and the material distribution station are arranged along a straight line, the material distribution station, the fine punching station and the blanking station are arranged around the rotation axis of the fixture turntable, The pre-punching station processes the metal strips into semi-finished blades, and the fine punching station processes the semi-finished blades into blades. There are several clamping areas evenly arranged around the rotating shaft on the fixture turntable to accommodate the semi-finished blades. The module is cut and pressed into the clamping area, and the clamp turntable transports the semi-finished blades to the material distribution station, fine punching station and unloading station in sequence. In the utility model, the pre-punching station for processing the metal strip is arranged in a straight line, and the fine-punching station for processing the single blade is arranged in a ring shape, which saves the mold volume and is easy to locate.

Description

Shredder Blade Stamping Die

technical field

The utility model relates to a shredding blade stamping die, which is used for reprocessing the blade semi-finished product with the blade tip shape.

Background technique

A traditional shredding blade includes a sheet-shaped blade, a mounting hole on the blade body and a knife point protruding from the outer edge of the blade body, and the periphery of the blade body is at right angles so that the periphery of the shredding blade It forms a right-angle blade, but when this shredding blade shreds paper, the blade is not sharp. In order to solve this problem, technicians have developed a V-shaped blade, referring to the patent CN202666951U. The edge of the shredding blade is oblique However, on the one hand, when stamping, the blank must be larger than the body of the shredder blade, so as to leave enough punching position, and the waste generated after forming the bevel needs to be washed away during stamping ; On the other hand, when this shredding blade is in use, because the cutting surface of the blade on the periphery of the blade is distributed on the thickness of the whole shredding blade, the middle part of the blade is relatively thick. After the end of the blade is worn, the shredding blade It gets dull quickly and has a short lifespan.

In order to change this situation, a new shredding blade has been developed. Through the half-cut forming process in the stamping forming process, the material on the edge of the blade blank is pressed downward so that the material on the edge expands outward to form a cutting sheet. , not only saves materials, cuts paper sharply, but also can form a sharp cutting surface at the end of the cutting sheet after wear and tear, and has a long service life. However, this type of shredding blade has complicated procedures, low production efficiency, and additional The processing cost of the paper blade.

Therefore, there is an urgent need for a shredding blade processing device with high production efficiency and low processing cost.

Utility model content

The purpose of the utility model is to provide a shredding blade stamping die with high production efficiency and low processing cost.

In order to realize the purpose, the utility model discloses a shredding blade stamping die, which includes a lower stamping die, an upper stamping die, a fixture turntable and a turntable drive mechanism, and the lower stamping die is provided with a pre-punching station, a material distribution Station, fine punching station and blanking station, the pre-punching station and the material distribution station are arranged in sequence along a straight line, and the clamp turntable is installed on the lower punching die by rotating around a rotation axis. The material distribution station, the fine punching station and the blanking station are sequentially arranged around the rotating shaft, and the upper stamping die is provided with corresponding Punches, a plurality of said pre-punching stations process the metal strips into blade semi-finished products, and several clamping areas which can accommodate and position the blade semi-finished products are evenly arranged on the said fixture turntable around the said rotating shaft. The material station cuts the semi-finished blade from the metal strip and presses it into the clamping area. The turntable drive mechanism is connected with the clamping turntable and controls the clamping turntable to move The semi-finished blade is transported to the material distribution station, the fine punching station and the blanking station in sequence. The fine punching station processes the semi-finished blade into a blade, and the blanking station blanks the blade.

Compared with the prior art, the utility model sets the pre-punching station for processing metal strips in a straight line, and sets the fine-punching station for processing single blades in a ring shape, which effectively saves the volume of the production line. Furthermore, the utility model adopts a turntable with a clamping area of multiple stations as the fixture of the shredding blade, so that one fixture turntable can carry a plurality of shredding blades (blade semi-finished products) at the same time, and not only can process a plurality of shredding blades at the same time. The blade has high production efficiency, and can directly move the OEM product to the next station by turning, saving energy and easy to position.

Preferably, the blade semi-finished product has a plurality of knife tips, and each clamping area is provided with at least two clamping grooves that match with the knife tips on the blade semi-finished product and clamp the knife tips, and the clamping area passes through The holding groove positions the blade blank. Compared with the prior art, the utility model clamps the blade semi-finished product through the clamping groove matched with the shape of the knife tip, so that the blade semi-finished product can be directly moved on the lower stamping die through the clamp turntable, and the blade is moved while moving. The edge of the semi-finished product or the blade body is punched, and there is no need to load and unload each punching. The operation is simple, and the clamping groove is used to clamp multiple blade tips, which also plays a role in positioning the blade and prevents the blade from being driven by the fixture turntable. The displacement of the blade is misplaced.

Preferably, the lower stamping die is provided with a cutting groove at the cutting station for the blades clamped in the clamping area to fall into.

Specifically, the stamping die for the shredded paper blade further includes a discharge channel communicating with the discharge trough, and the discharge channel outputs the blades in the discharge chute.

Specifically, the blank shape of the blade body is formed on the semi-finished blade, the fine punching station includes a blanking station and a trimming station arranged in sequence, and the punch includes a pressing station corresponding to the blanking station. Edge punches, trimming punches corresponding to the trimming station, the edge pressing punch squeezes the edge material of the semi-finished blade to form a cutting sheet around the blade body, and the trimming station punches the cutting The edge of the sheet is made into a blade by forming a knife edge at the outermost edge of the cut sheet.

More specifically, there are at least two guide holes on the body of the semi-finished blade, and the upper stamping die and the lower stamping die of the blanking station are respectively provided with alignment needles and Alignment hole, the pressing of the upper stamping die can drive the alignment needle to pass through the guide hole and then extend into the alignment hole, so as to ensure that the edge pressing punch is accurately pressed on the semi-finished blade when pressing the edge, preventing the blade from Inaccurate edge pressing caused by cheap semi-finished products. Wherein, the top of the alignment needle is arc-shaped or tapered, which is convenient for guiding into the alignment hole and the guide hole. The guide hole can be a progressive hole with a large opening and a small bottom, which is convenient for the alignment needle to enter and guide accurately.

More specifically, the fine punching station also includes a flattening station between the trimming station and the blanking station, and the punch includes a flattening punch corresponding to the flattening station , the leveling punch cooperates with the lower stamping die to level the blade.

Preferably, the stamping die of the shredder blade further includes a stripping plate, the stripping plate is fixedly installed on the lower stamping die and located above the clamp turntable to cover the clamping at the fine punching station. slot, and the stripping plate is provided with a plurality of avoidance holes corresponding to the splitting station and the fine punching station for the punches at the splitting station and the processing station to pass through, and the stripping The material plate is provided with an opening at the material distributing station for the semi-finished blade to extend into the avoidance hole.

Preferably, the turntable drive mechanism includes a one-way transmission assembly, one end of the one-way transmission assembly is connected to the upper stamping die, and the other end is connected to the clamp turntable, and drives the The fixture turntable rotates a processing angle along the positive direction, and the angle of said processing angle is equal to the central angle between the two clamping areas. This scheme enables the utility model to automatically drive the position of the fixture turntable to rotate through the stamping action of the stamping die, saving The energy source also ensures the timing of stamping die movement and fixture turntable rotation, wherein the movement of the upper stamping die is controlled by the corresponding drive source in the stamping device, which will not be described in detail here.

Specifically, the one-way transmission assembly includes a drive plate connected to the upper stamping die, a first push block rotatably mounted on the drive plate, a first rotating shaft rotatably mounted on the lower stamping die, The one-way gear on a rotating shaft and the transmission part installed between the first rotating shaft and the fixture turntable, the reset of the upper stamping die drives the driving plate to move forward, and the driving plate drives the first push block to push forward The one-way gear is pushed against the one-way gear to drive the one-way gear to rotate in the forward direction, and the one-way gear is driven to drive the clamp turntable to rotate a processing angle in the positive direction through the transmission part.

More specifically, the one-way transmission assembly also includes a second push block and an elastic member, the second push block is rotatably mounted on the lower stamping die and is opposite to the position of the one-way gear, and the elastic member is installed between the second push block and the lower stamping die and provide the second push block with an elastic force against the one-way gear, so as to prevent the one-way gear from rotating in reverse.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the stamping die of the shredding blade of the present invention.

Fig. 2 is a side view of the stamping die of the shredder blade of the present invention.

Fig. 3 is a cross-sectional view of the stamping die of the shredding blade of the present invention.

Fig. 4 is a structural schematic view of the stamping die of the shredding blade according to the present invention after the upper stamping die is removed.

Fig. 5 is a top view of Fig. 4 .

FIG. 6 is an exploded schematic diagram of FIG. 4 .

Fig. 7 is a schematic structural view of Fig. 4 after removing the stripper plate.

Fig. 8 is a schematic structural view of the clamp turntable of the present invention.

Fig. 9 is a schematic diagram of the distribution punch and the fine punch on the upper stamping die of the present invention.

Fig. 10 is a schematic diagram of the preprocessing procedure of the present invention.

Fig. 11a is a schematic diagram of cooperation between the fixture turntable, the material distribution punch and the fine punch according to the present invention.

Fig. 11b is a working schematic diagram of the clamp turntable of the present invention.

Fig. 11c is a schematic diagram of the processing procedure when the utility model processes the edge of the blade.

Fig. 12 is a schematic structural view of the blanking punch described in the present invention.

Fig. 13a to Fig. 13d are product diagrams processed after each processing procedure when the utility model is processing the edge of the blade.

Fig. 14a is a schematic structural view of the semi-finished blade before processing.

Fig. 14b is a schematic structural view of the blade after processing.

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

Referring to Fig. 1 to Fig. 7, the utility model discloses a stamping die 100 for shredding blades, which includes a lower stamping die 10, an upper stamping die 20, a fixture turntable 30 and a turntable drive mechanism, and the fixture turntable 30 is rotatably mounted on the The lower stamping die 10 is used for loading the blade semi-finished product 300 (as described in FIG. 9 ). With reference to Fig. 7, the described lower stamping die 10 is provided with a pre-punching station 50, a material distribution station 41, a fine punching station 42 and a blanking station 43, and the pre-punching station 50 and the material distribution station Positions 41 are arranged sequentially along a straight line, the fixture turntable 30 is mounted on the lower stamping die 20 by rotating around a rotating shaft 31, and the material dividing station 41, fine punching station 42 and blanking station 43 are arranged around the The rotating shafts 31 are set in sequence, and the upper stamping die 10 is provided with punches corresponding to the pre-punching station 50, the material distribution station 41 and the fine-punching station 42. Referring to FIG. 10, a plurality of the pre-punching stations The station 50 processes the metal material strip 200 into a blade semi-finished product 300, and the fixture rotating disk 30 is evenly provided with several clamping areas 32 around the rotating shaft 31 that can accommodate and position the blade semi-finished product 300. Position 41 cuts the blade semi-finished product 300 from the metal strip 200 and presses it into the clamping area 32. The turntable drive mechanism is connected with the clamp turntable 30 and controls the turntable 30 to rotate around the clamp. The shaft 31 rotates step by step, so that the clamp turntable 30 transports the blade semi-finished product 300 in the clamping 32 area from the dividing station 41 to the fine punching station 42 and the blanking station 43 in sequence, refer to the figure 11c, the fine punching station 42 processes the semi-finished blade 300 into a blade 400 , and the blanking station 43 blanks the blade 400 .

Referring to FIG. 10 , the side of the lower stamping die 10 opposite to the material dividing station 41 forms a processing table 13 for inputting metal strips, and the pre-punching station 50 is formed on the working table 13 . Referring to Fig. 7 and Fig. 10, a pre-fine-punching punch corresponding to the pre-punching station 50 is formed on the upper and upper stamping die 20 (as shown in the shaded part in Fig. 10), and the pre-fine-punching punch corresponds to the pre-punching station 50 in turn Set on the processing table 13 and process the blank shape of the blade body and the shape of the blade tip on the metal strip, so as to make the semi-finished blade 300 . The output end of the processing table 13 is opposite to the material distribution station 41, and the metal material strip 200 can be transported to the material distribution station 41 along the processing table and is located above the clamping turntable 30. Among them, the pre-punching station 50 includes a center hole punching station 51 for processing the center hole of the shredder blade, edge punching stations 52 and 53 for stamping the knife tip and the prototype of the blade body, and a punching station 54 for punching the center mounting hole of the shredder blade. , the bevel stations 55 and 56 for stamping the bevel angle of the knife tip and the alignment hole fine punch station 57 for punching the guide hole 302 . Of course, the specific type and sequence of the pre-flushing stations 50 can be designed according to actual needs, and are not limited to the above structures.

Wherein, referring to FIG. 11 b , the semi-finished blade 300 has multiple cutting edges (as shown in FIG. 14 a ), and the fine punching station 42 is used for processing the edge of the blade. Each clamping area 32 is provided with at least two clamping grooves 321 that cooperate with the tip 201 on the semi-finished blade 300 and clamp the tip 201 . Wherein, the size of the clamping groove 321 is slightly larger than the size of the tip 201, which is convenient for the semi-finished blade 300 to fall into the clamping area 32 under the action of gravity. Of course, the upper opening of the clamping groove 321 can also be set as a horn Shape, that is, the opening is large, the shape under the bottom is convenient for the semi-finished blade 300 to enter. The clamping area 32 is a through groove.

In this embodiment, one clamping turntable 30 has eight clamping areas 32 . This embodiment includes a material distribution station 41, a blanking station 43, a plurality of fine punching stations 42, the distance between two adjacent clamping areas 32 is 45 degrees, and the central angle between the two stations is 45 degrees. Parts are 90 degrees. Of course, a plurality of material distribution stations and blanking stations can also be formed on one fixture turntable 30, for example, two distribution stations and two blanking stations are set, wherein one material distribution station 41, the corresponding one or A plurality of fine punching stations 42 and a blanking station 43 form a group, that is, there is a corresponding fine punching station between each distribution station and the corresponding blanking station, so that two clamping discs 30 can be used. production line. Of course, other numbers of clamping areas 32 on each clamping turntable 40 can also be used, such as 10, 12, etc., which can still be set according to actual needs.

Referring to FIG. 8 , the clamping turntable 30 is in the shape of a sheet, which includes a central portion 33 mounted on the rotating shaft 31 and several clamping arms 34 formed by extending outward from the central portion 33 , and the clamping area 32 is formed on Between two adjacent clamping arms 34 . Specifically, a clamping groove 321 is formed on the outside of the front end and the inside of the end of each clamping arm 34, and a clamping area 32 is formed between two adjacent clamping grooves 321. The clamping groove on the outside of the front end of each clamping arm 34 321 is opposite to the clamping groove 321 inside the end of another clamping arm 34 adjacent to the outside. In this embodiment, the clamping area 32 is an open gap, which not only saves material, is convenient for production, but also facilitates the pick-and-place of processed products.

Referring to Fig. 7 and Fig. 8, described lower stamping die 10 is provided with a blanking chute 11 for the blade clamped on the clamping area to drop into at described blanking station 43, and described upper stamping die 20 is also provided with There is a material distribution punch 22 corresponding to the material distribution station 41, and the material distribution punch 22 separates the blade semi-finished product 300 at the material distribution station 41 from the blade semi-finished product module and separates the blade semi-finished product. 300 rushes into the clamping area 32 at the distributing station 41, and the blade 400 falls into the cutting trough 11 at the cutting station 43 under the action of gravity. Wherein, the stamping die 100 for shredded paper blades further includes a discharge channel 12 communicating with the discharge trough 11 , and the discharge channel 12 outputs the blades 400 in the discharge chute 11 . Of course, the cutting of the blade can also be carried out by means of manipulators, suction cups, etc.

Referring to Fig. 14a, the blade semi-finished product 300 is formed with the blank shape of the blade body. Referring to Fig. 7 and Fig. 11a, the fine punching station 42 includes a pressing station 421, 422 and a trimming station 423 arranged in sequence. Said punch includes a fine punch corresponding to the fine punch station 42, and the fine punch 21 includes a blank press punch 211, 212 corresponding to the blank press station 421, 422, and a press station corresponding to the trimming station. The trimming punch 23 corresponding to 423, with reference to Fig. 11a and Fig. 11b, said edge pressing punches 421, 422 squeeze the edge material of the blade semi-finished product 300 to form a cutting sheet 301 around the blade body (as shown in Fig. 13c), so The trimming punch 23 punches the edge of the cutting sheet 301 to form a cutting edge on the outermost edge of the cutting sheet 301 to form a blade 400 (as shown in FIG. 13d ).

Wherein, the blanking punch 211 is shown in FIG. 12 , and its end is wedge-shaped, and is used to punch out the pre-filling line 304 on the semi-finished blade 300 . At this time, the semi-finished blade 300 is shown in FIG. 13 b . The end of the edge-pressing punch 212 is a flat surface, which is used to squeeze the edge material outside the pre-filling line 304 of the blade semi-finished product 300 to form a cutting sheet 301 around the blade body (as shown in FIG. 13c ).

Wherein, the blade body 301 of the semi-finished blade 300 has at least two guide holes 302, and the upper stamping die 20 and the lower stamping die 10 are respectively provided with the positions corresponding to the shown blanking stations 421, 422. The alignment needle (not shown in the figure) and the alignment hole 303 corresponding to the guide hole 302 and concave-convex fit, the pressing of the upper stamping die 20 can drive the alignment needle to pass through the guide hole 302 and then extend into the alignment hole 303. The alignment hole 303 is described above. The diameter of the guide hole 302 is slightly larger than the diameter of the alignment hole 303 , and the diameter of the guide hole 302 in this embodiment is five wires larger than the diameter of the alignment hole 303 .

Referring to Fig. 7, Fig. 11a and Fig. 11b, the fine punching station 42 also includes a leveling station 424 between the trimming station 423 and the blanking station 43, referring to Fig. 9, the fine punching station The head 21 includes a flattening punch 24 corresponding to the flattening station 424 , and the flattening punch 23 cooperates with the lower stamping die 10 to flatten the blade 400 .

4 to 6, the shredder blade stamping die 100 also includes a stripping plate 60, the stripping plate 60 is fixedly installed on the lower stamping die 10 and is located above the clamp turntable 30 to cover the The clamping groove 321 at the fine punching station 42, the stripping plate 60 is provided with a plurality of fine punches 21 and distribution punches 22 corresponding to the distribution station 41 and the fine punch station 42 through the avoidance holes 61-65, and the stripping plate 60 is provided with an opening 611 for the blade semi-finished product 300 to extend into the avoidance holes 61 at the material distribution station 41, and the avoidance groove 61 places The clamping groove 321 is exposed outside. Wherein, a flange 621 shielding the clamping groove 321 is provided at a position corresponding to the clamping groove 321 on the edge of the avoiding grooves 62 - 65 .

1 to 3, the turntable drive mechanism includes a one-way transmission assembly 70, one end of the one-way transmission assembly 70 is connected to the upper stamping die 20, the other end is connected to the clamp turntable 30, and the upper stamping When the mold 20 does a reset action upwards, it drives the clamp turntable 30 to rotate a processing angle in the positive direction. The angle of the processing angle is equal to the central angle between the two clamping areas 32. In this embodiment, the processing angle is 45 degrees. . Certainly, the turntable driving mechanism can also be a stepping driving source, and the clamping turntable 30 is driven by the stepping driving source, and it is only necessary to move the clamping turntable 30 by a processing angle before the upper stamping die 20 punches downward.

Wherein, the metal material strip 200 also needs to move a step before the upper stamping die 20 punches downwards, and the metal material strip 200 can move synchronously with the clamp turntable 30, so the upper stamping die 20 and the metal material can be moved through a one-way transmission mechanism. The conveying mechanism of the belt 200 is connected to drive the metal material belt 200 and the fixture turntable 30 to move synchronously.

Specifically, referring to FIGS. 1 to 3 , the one-way transmission assembly 70 includes a drive plate 71 connected to the upper stamping die 20, a first push block 72 rotatably mounted on the drive plate 71, and a first push block 72 rotatably mounted on the The first rotating shaft 73 on the lower stamping die 10, the one-way gear 74 installed on the first rotating shaft 73, and the transmission part 75 installed between the first rotating shaft 74 and the clamp turntable 30, the reset of the upper stamping die 20 drives the The drive plate 71 moves forward, and the drive plate 71 drives the first push block 72 to push forward to resist the one-way gear 74 so as to drive the one-way gear 74 to rotate forward, and the one-way gear 74 Driven by the transmission part 75 , the clamp turntable 30 is driven to rotate a processing angle in the positive direction. Wherein, the upper stamping die 20 moves up and down under the control of a driving source.

Wherein, the one-way transmission assembly 70 also includes a second push block 76 and an elastic member (not shown in the figure), the second push block 43 is rotatably mounted on the lower stamping die 10 and is connected with the one-way gear 74 are located opposite each other, and the elastic member is installed between the second push block 76 and the lower stamping die 10 and provides the second push block 76 with an elastic force against the one-way gear 74 to prevent the one-way Gear 74 rotates in reverse.

Referring to FIG. 2 , the drive plate 71 includes a pull plate 77 connected to the upper stamping die 20 and a slide plate 78 slidably mounted on the lower stamping die 10 in the horizontal direction. The pull plate 77 and the slide plate 78 are respectively A slanted hole 771 inclined relative to the vertical direction and a slider 781 slidably installed in the slanted hole 771 are opened. The lifting action of the upper stamping die 20 drives the slider 78 to slide in the horizontal direction. 78 drives the first push block 72 to move in the horizontal direction.

Wherein, in this embodiment, a telescopic cylinder or a stepping motor is used as a stamping device to drive the upper stamping die 20 to move up and down, so as to stamp the blade and reset it.

Referring to Fig. 6 to Fig. 14b, the method for processing the shredding blade by the stamping die 100 of the shredding blade according to the utility model is described:

(1) Referring to Figure 6 and Figure 10, the external conveying mechanism sends the metal strip 200 into the processing table 13 step by step according to the timing sequence of the upper stamping die 20 and the lower punch, and the pre-punching punch passes through the stations 51-57 on the metal strip. The blank shape of the blade body and the shape of the blade tip are processed to form the semi-finished blade 300. At this time, the processed semi-finished product 300 is shown in Figure 13a and Figure 14a. Afterwards, the processed semi-finished product 300 will be sent to the material distribution station 41 along with the delivery of the metal strip 200 and located above the clamping turntable 30 .

(2) At this time, the driving mechanism drives the upper stamping die 20 to descend for stamping. Referring to Fig. 10, 11a to Fig. 11c, as shown at the distributing station 41, the distributing punch 22 stamps the blade semi-finished product 300 at the distributing station, It is cut and blanked from the blade semi-finished product module and the cut and blanked blade semi-finished product 300 is flushed into the clamping area 32 at the distributing station 41 .

(3) The driving mechanism drives the upper stamping die 20 to rise and reset, and the upper stamping die 20 drives the clamp turntable 30 to rotate a processing angle (45 degrees) in the positive direction through the one-way transmission assembly 70, and the cutting blade semi-finished product 300 is moved to the press Side station 421. The conveying mechanism drives the metal material belt 200 to advance one step, and the next blade semi-finished product 300 is sent to the distributing station 41 .

(4) The driving mechanism drives the upper stamping die 20 to descend for stamping. Referring to Figure 11a to Figure 11c at the blanking station 421, the blanking punch 211 punches out the pre-filling line 304 on the semi-finished blade 300, as shown in Figure 13b , at this moment, the edge material outside the pre-fill line 304 is slightly pressed by the crimping punch 211 to move outward.

(5) The driving mechanism drives the upper stamping die 20 to rise and reset, and the upper stamping die 20 drives the fixture turntable 30 to rotate a processing angle (45 degrees) in the positive direction through the one-way transmission assembly 70, and the blade semi-finished product 300 that presses the pre-filling line 304 is removed. Move to an empty station, the conveying mechanism drives the metal strip 200 to advance one step, and the third blade semi-finished product 300 is sent to the distributing station 41, until the upper stamping die 20 completes a downward and upward movement again, and the pre-charge is completed. The blade semi-finished product 300 of the line 304 is pressed by the blanking station 422. At this time, the conveying mechanism drives the metal strip 200 to advance one more step, and the fourth blade semi-finished product 300 is sent to the material dividing station 41.

(6) The driving mechanism drives the upper stamping die 20 to descend for stamping. Referring to Fig. 11a to Fig. 11c at the blanking station 422, the blanking punch 212 squeezes the edge material other than the semi-finished product 300 pre-filling line 304 of the blade to form a ring around the blade The sheet 301 is cut (as shown in Figure 13c).

(7) The driving mechanism drives the upper stamping die 20 to rise and reset, and the upper stamping die 20 drives the clamp turntable 30 to rotate a processing angle (45 degrees) in the positive direction through the one-way transmission assembly 70, and the blade semi-finished product 300 that presses the cutting sheet 301 is moved To trimming station 423. The conveying mechanism drives the metal strip 200 to advance one more step, and the fifth blade semi-finished product 300 is sent to the material distribution station 41.

(8) The driving mechanism drives the upper stamping die 20 to descend and stamp. Referring to the edge trimming station 423 in FIGS. The outermost edge forms a cutting edge to form a blade 400 (as shown in Figure 13d).

(9) The driving mechanism drives the upper stamping die 20 to rise and reset, and the upper stamping die 20 drives the clamp turntable 30 to rotate a processing angle (45 degrees) in the positive direction through the one-way transmission assembly 70, and the blade 400 made of the blade is moved to leveling Work station 424. The conveying mechanism drives the metal strip 200 to advance one more step, and the sixth blade semi-finished product 300 is sent to the material distribution station 41 .

(10) The driving mechanism drives the upper stamping die 20 to descend for stamping. Referring to the leveling station 424 in FIGS.

(11) The driving mechanism drives the upper stamping die 20 to rise and reset, and the upper stamping die 20 drives the clamp turntable 30 to rotate a processing angle (45 degrees) in the positive direction through the one-way transmission assembly 70, and the blade 400 made of the blade is moved to the blanking Work station 43 , the blade 400 falls into the discharge chute 11 under the action of gravity at the discharge station 43 , and is output along the discharge channel 12 . The conveying mechanism drives the metal strip 200 to advance one more step, and the seventh blade semi-finished product 300 is sent to the material distribution station 41 .

Wherein, referring to FIG. 11c, seven products can be processed at the same time in the station on the above-mentioned fixture turntable 30 . The pre-punching punch, the distribution punch 22, and the fine punching punch 21 all rise and fall simultaneously under the drive of the upper stamping die 20.

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (10)

1. A shredding blade punching die, characterized in that it comprises a lower punching die, an upper punching die, a clamp turntable and a turntable drive mechanism, and the lower punching die is provided with a pre-punching station, a material distribution station, a fine punching Station and blanking station, the pre-punching station and the material distribution station are arranged in sequence along a straight line, the clamp turntable is installed on the lower stamping die by rotating around a rotation axis, and the material distribution station , the fine punching station and the blanking station are sequentially arranged around the rotating shaft, and the upper stamping die is provided with punches corresponding to the pre-punching station, the material distribution station and the fine punching station, and a plurality of The pre-punching station processes the metal material strip into a semi-finished blade, and the fixture turntable is evenly provided with several clamping areas around the rotating shaft that can accommodate and position the semi-finished blade. The semi-finished blades are cut from the metal strip and pressed into the clamping area, and the turntable drive mechanism is connected with the clamping turntable and controls the clamping turntable to sequentially transport the semi-finished blades in the clamping area To the material distribution station, the fine punching station and the blanking station, the fine punching station processes the semi-finished blade into a blade, and the blanking station blanks the blade. 2. The shredder blade stamping die according to claim 1, wherein the blade semi-finished product has a plurality of knife points, and each clamping area is provided with at least two blade points that are matched with the blade semi-finished product. A clamping groove for clamping the tip of a knife, and the clamping zone positions the semi-finished blade through the clamping groove. 3 . The shredding blade stamping die according to claim 1 , wherein the lower stamping die is provided with a discharge trough at the blanking station for the blade clamped on the clamping area to fall into. 4 . 4. The shredder blade stamping die according to claim 1, wherein the fine punching station includes a blanking station and a trimming station arranged in sequence, and the punch includes a The edge-pressing punch corresponding to the bit, and the trimming punch corresponding to the trimming station, the edge material of the semi-finished blade is squeezed by the trimming punch to form a cutting sheet around the blade body, and the trimming station punches Cutting the edge of the cutting sheet to form a knife edge at the outermost edge of the cutting sheet to make a blade. 5. The shredding blade stamping die as claimed in claim 4, characterized in that, there are at least two guide holes on the blade body of the semi-finished blade, and the upper stamping die and the lower stamping die of the blanking station are respectively provided with two guide holes. There are aligning pins and aligning holes corresponding to the guide holes and matched with concave and convex, and the pressing of the upper stamping die can drive the aligning pins to pass through the guide holes and then extend into the aligning holes. 6. The shredding blade stamping die according to claim 4, wherein the fine punching station also includes a leveling station between the trimming station and the blanking station, the punching station The head includes a leveling punch corresponding to the leveling station, and the leveling punch cooperates with the lower stamping die to level the blade. 7. The shredder blade stamping die according to claim 1, further comprising a stripping plate, the stripping plate is fixedly installed on the lower stamping die and is located above the clamping turntable to cover the The clamping groove at the fine punching station, the stripper plate is provided with a plurality of punches corresponding to the splitting station and the fine punching station to pass through The escape hole, and the stripping plate is provided with an opening for the semi-finished blade to extend into the avoidance hole at the material distribution station. 8. The shredding blade stamping die according to claim 1, wherein the turntable drive mechanism comprises a one-way transmission assembly, one end of the one-way transmission assembly is connected to the upper stamping die, and the other end is connected to the clamp Turntable, and when the upper stamping die resets, it drives the fixture turntable to rotate in the positive direction by a processing angle, and the angle of the processing angle is equal to the central angle between the two clamping areas. 9. The shredding blade stamping die according to claim 8, wherein the one-way transmission assembly comprises a drive plate connected to the upper stamping die, a first push block rotatably mounted on the drive plate , rotate the first rotating shaft installed on the lower stamping die, the one-way gear installed on the first rotating shaft, and the transmission part installed between the first rotating shaft and the fixture turntable, the reset of the upper stamping die drives the drive plate to Moving forward, the drive plate drives the first push block to push forward to push the one-way gear to drive the one-way gear to rotate forward, and the one-way gear drives the clamp through the transmission part The turntable rotates a processing angle in the positive direction. 10. The shredding blade stamping die according to claim 9, wherein the one-way transmission assembly further comprises a second push block and an elastic member, and the second push block is rotatably mounted on the lower stamping die And opposite to the position of the one-way gear, the elastic member is installed between the second push block and the lower stamping die and provides the second push block with an elastic force against the one-way gear, so as to prevent the The one-way gear rotates in the opposite direction.