Automobile stamping die waste knife

Abstract

The utility model discloses a kind of automobile stamping die waste knives, specifically relate to waste knife technical field, including waste knife assembly, waste knife assembly includes blade, blade outside is equipped with material scraping subassembly, material scraping subassembly includes rectangular frame, rectangular frame both sides are internally provided with cavity, rectangular frame inside is equipped with two scrapers, two scrapers are respectively arranged at blade both sides, the side of two scrapers far away from each other is fixed with slide, two slides are respectively extended into two cavity interiors, the inner wall of two cavities is fixed with electromagnet, electromagnet is located at the side of slide far away from scraper, the side of two scrapers far away from each other is fixed with slide bar, the end of slide bar far away from scraper is connected with the inner wall of cavity by spring.The utility model avoids unnecessary friction between the surface of blade and scraper in the process of cutting waste material, reduces the loss of scraper, is conducive to prolonging the service life of scraper, reduces the replacement cycle of scraper, and then is conducive to reducing maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of scrap cutting tool technology, specifically to a scrap cutting tool for automotive stamping dies. Background Technology

[0002] In automotive stamping production, sheet metal generates a large amount of waste after processes such as blanking, punching, and trimming. If this waste accumulates in the mold cavity, it can cause mold jamming, dimensional deviations in parts, or even mold damage. The scrap cutter is a core functional component in automotive stamping dies, specifically designed to cut, separate, and guide waste. Its core function is to break down continuous or large pieces of waste into smaller, easily discharged pieces, ensuring a continuous and stable stamping process while protecting the quality of the mold and stamped parts, as exemplified by the scrap cutter structure for stamping dies in existing technology publication number CN223145821U.

[0003] Existing scrap cutters clean scrap from the blade body by keeping the scraper plate in constant contact with the blade body surface. However, this method has the following drawbacks in actual use: when the blade body moves down to cut, no scrap residue has yet formed on the blade body surface, but the scraper plate is still in contact with the blade body surface at this time. This causes unnecessary friction between the scraper plate and the blade body surface during the downward movement of the blade body. This friction will cause continuous mechanical wear on the contact end face of the scraper plate, which will easily shorten the scraper plate's lifespan, requiring frequent replacement and increasing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a scrap cutter for automotive stamping dies, which avoids unnecessary friction between the blade surface and the scraper during the scrap cutting process, reduces scraper wear, extends scraper service life, reduces scraper replacement cycle, and thus helps reduce maintenance costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a scrap cutter for automotive stamping dies, comprising a scrap cutter assembly, the scrap cutter assembly comprising a blade, a scraper assembly sleeved on the outer side of the blade, the scraper assembly comprising a rectangular frame, cavities being formed on both sides of the rectangular frame, two scrapers being provided on the inner side of the rectangular frame, the two scrapers being respectively located on both sides of the blade, and a sliding plate being fixed on the side of the two scrapers that is far apart from each other, the two sliding plates extending into the two cavities respectively.

[0006] Electromagnets are fixed to the inner walls of both cavities. The electromagnets are located on the side of the slide plate away from the scraper and can attract the slide plate. Slide rods are fixed to the sides of the two scrapers away from each other and extend into the two cavities respectively. The slide rods are located on the outside of the slide plate and the electromagnets. The end of the slide rod away from the scraper is connected to the inner wall of the cavity by a spring.

[0007] Preferably, rubber pads are fixed on the side of the two scrapers that are close to each other.

[0008] Preferably, the rectangular frame has a U-shaped suction chamber inside, the suction chamber is located at the bottom of the cavity, the suction chamber has multiple suction holes communicating with the suction chamber on the inner side, and a suction pipe communicating with the suction chamber is fixed on the outer wall of the rectangular frame. The suction pipe is connected to a vacuum fan and is used to absorb the waste scraped off the blade.

[0009] Preferably, a support component is provided on one side of the top of the scraping assembly. The support component includes a vertical plate on one side of the blade, and a fixing plate is fixed to the top of one side of the vertical plate. Two connecting rods are provided at the bottom of the vertical plate. The top of the connecting rods extends into the interior of the vertical plate and is slidably connected to the vertical plate. The bottom of the connecting rods is fixed to the top of the rectangular frame. Two bolts are fixed to the outer wall of the vertical plate for fixing the connecting rods.

[0010] Preferably, a switch one is fixed at the bottom of the fixing plate, a mounting block is fixed at the bottom of the vertical plate near the blade, and a switch two is fixed at the top of the mounting block. The switch one and the switch two are dual-control switches.

[0011] Preferably, the blade has a blade housing on its top outer side, and the outer wall of the blade housing has two bolts for fixing the blade. The blade housing is located at the bottom of the switch. A mounting plate for connecting to an automotive stamping die is fixed to the side of the blade housing away from the vertical plate, and a trigger plate is fixed to the side of the blade housing near the vertical plate. The trigger plate is located at the top of the switch.

[0012] Preferably, when the automotive stamping die drives the blade to move down to cut the waste and the trigger plate triggers switch two, the electromagnet is turned off, and the scraper is in close contact with the blade surface under the elastic force of the spring; after cutting the waste, the automotive stamping die drives the blade to move up so that the scraper scrapes off the waste on the blade surface. When the blade housing triggers switch one, the electromagnet activates the adsorption slide plate, causing the scraper to separate from the blade.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. During the process of cutting waste by the blade moving downward, the scraper does not contact the blade. After the waste is cut, the scraper contacts the blade surface during the process of the blade moving upward, scraping off the waste adhering to the blade. Compared with the prior art, this utility model avoids unnecessary friction between the blade surface and the scraper during the process of cutting waste, reduces scraper wear, helps to extend the scraper's service life, reduces the scraper's replacement cycle, and thus helps to reduce maintenance costs.

[0015] 2. Connect the suction tube to the vacuum cleaner fan. When the scraper scrapes off the waste from the blade surface, larger waste pieces fall under the influence of gravity, while smaller waste pieces can be sucked away, effectively preventing smaller waste pieces from floating and polluting the work area environment and affecting the health of personnel. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model;

[0017] Figure 2 This is a view of the overall rear structure of the present invention;

[0018] Figure 3 This is a structural diagram of the waste cutting tool assembly of this utility model;

[0019] Figure 4 This is a top sectional view of the scraping assembly of this utility model;

[0020] Figure 5 This is a bottom sectional view of the scraper assembly of this utility model;

[0021] Figure 6 This is a schematic diagram of the operation of this utility model. Figure 1 ;

[0022] Figure 7 This is a schematic diagram of the operation of this utility model. Figure 2 ;

[0023] Figure 8 This is a schematic diagram of the operation of this utility model. Figure 3 .

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Scrap knife assembly, 11. Blade, 12. Knife housing, 13. Mounting plate, 14. Trigger plate;

[0026] 2. Scraping assembly, 21. Rectangular frame, 22. Scraper, 23. Cavity, 24. Slide plate, 25. Electromagnet, 26. Slide rod, 27. Spring, 28. Rubber pad, 29. Dust collection chamber, 210. Suction hole, 211. Suction tube;

[0027] 3 Supporting components, 31 Vertical plate, 32 Fixing plate, 33 Connecting rod, 34 Switch 1, 35 Mounting block, 36 Switch 2. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model provides, for example Figures 1-8The illustration shows a scrap cutter for automotive stamping dies, comprising a scrap cutter assembly 1. The scrap cutter assembly 1 includes a blade 11 and a cutter housing 12 disposed on the outer side of the top of the blade 11. Two bolts are provided on the outer wall of the cutter housing 12 for fixing the blade 11, facilitating the assembly and disassembly of the blade 11. A mounting plate 13, connected to the automotive stamping die, is fixed to the side of the cutter housing 12 away from the vertical plate 31, facilitating the automotive stamping die to drive the blade 11 to move up and down to cut scrap. A trigger plate 14 is fixed to the side of the cutter housing 12 near the vertical plate 31.

[0030] like Figure 1 , Figure 2 and Figure 4 As shown, a scraping assembly 2 is sleeved on the outside of the blade 11. The scraping assembly 2 includes a rectangular frame 21. Cavities 23 are opened on both sides of the rectangular frame 21. Two scrapers 22 are provided on the inner side of the rectangular frame 21. The two scrapers 22 are respectively located on both sides of the blade 11. A sliding plate 24 is fixed on the side of the two scrapers 22 that is far apart. The two sliding plates 24 extend into the two cavities 23 respectively.

[0031] Electromagnets 25 are fixed to the inner walls of both cavities 23. The electromagnets 25 are located on the side of the slide plate 24 away from the scraper 22. The slide plate 24 is made of a material that can be attracted by the electromagnets 25, such as iron. Slide rods 26 are fixed to the side of the two scrapers 22 away from each other. The two slide rods 26 extend into the two cavities 23 respectively. The slide rods 26 are located on the outside of the slide plate 24 and the electromagnets 25. The end of the slide rod 26 away from the scraper 22 is connected to the inner wall of the cavity 23 by a spring 27.

[0032] Next, as Figures 1-2 As shown, a support component 3 is provided on one side of the top of the scraping assembly 2. The support component 3 includes a vertical plate 31 on one side of the blade 11. A fixing plate 32 is fixed to the top of one side of the vertical plate 31. The blade housing 12 is located at the bottom of the switch 34. Two connecting rods 33 are provided at the bottom of the vertical plate 31. The top of the connecting rods 33 extends into the interior of the vertical plate 31 and is slidably connected to the vertical plate 31. The bottom of the connecting rods 33 is fixed to the top of the rectangular frame 21. Two bolts are fixed to the outer wall of the vertical plate 31 for fixing the connecting rods 33. The position of the scraping assembly 2 on the blade 11 can be adjusted by sliding the connecting rods 33 to avoid the scraping assembly 2 from obstructing the blade 11 from cutting waste.

[0033] A switch 34 is fixed to the bottom of the fixed plate 32. A mounting block 35 is fixed to the bottom of the vertical plate 31 near the blade 11. A switch 36 is fixed to the top of the mounting block 35. The trigger plate 14 is located on top of the switch 36. The switch 34 and the switch 36 are dual-control switches. The core function of a dual-control switch is to control the on / off of the same lamp or a group of lamps / electrical appliances from different positions through two independent switches, without the need for back-and-forth operation. It is widely used in scenarios that require multi-position control, such as controlling the bedroom light from the bedroom door and bedside, controlling the stair light from the top and bottom of the stairs, and controlling the living room main light from the living room door and next to the sofa.

[0034] When using it, the initial state is as follows: Figure 6 As shown, at this time, the electromagnet 25 works to attract the sliding plate 24, causing the scraper 22 to leave the blade 11. Then, the automotive stamping die drives the blade 11 of the scrap cutter assembly 1 to move down to cut the scrap. During the scrap cutting process, the scraper 22 does not contact the blade 11. When the blade 11 descends to the lowest point, the trigger plate 14 contacts the switch 36, turning off the electromagnet 25. At this time, the scraper 22 remains in close contact with the surface of the blade 11 under the elastic force of the spring 27. Figure 7 As shown;

[0035] After cutting the waste material, the automotive stamping die drives the blade 11 to move upward. During this upward movement, the scraper 22 scrapes off the waste material adhering to the surface of the blade 11. Figure 8 As shown, the blade 11 is cleaned. When the blade 11 rises to the initial position, the blade housing 12 triggers switch 34, and the electromagnet 25 activates the suction slide plate 24, causing the scraper 22 to move away from the blade 11. Figure 6 The state shown;

[0036] In summary, during the process of the blade 11 moving down to cut waste, the scraper 22 does not come into contact with the blade 11, thus avoiding unnecessary friction between the surface of the blade 11 and the scraper 22 during the waste cutting process, reducing the wear of the scraper 22, which is conducive to extending the service life of the scraper 22, reducing the replacement cycle of the scraper 22, and reducing maintenance costs.

[0037] In addition, rubber pads 28 are fixed on the side of the two scrapers 22 that are close to each other. When scraping material, the rubber pads 28 on the scrapers 22 directly contact the surface of the blades 11, which helps to improve the scraping effect.

[0038] Furthermore, such as Figure 4 and Figure 5As shown, a U-shaped suction chamber 29 is provided inside the rectangular frame 21. The suction chamber 29 is located at the bottom of the cavity 23. Multiple suction holes 210 communicating with the suction chamber 29 are provided on the inner side of the suction chamber 29. A suction pipe 211 communicating with the suction chamber 29 is fixed on the outer wall of the rectangular frame 21. The suction pipe 211 is connected to the vacuum fan. When the scraper 22 scrapes off the waste on the surface of the blade 11, the larger waste falls under the action of gravity, while the smaller waste can be sucked into the suction chamber 29 through the suction holes 210 and then discharged through the suction pipe 211. This effectively avoids the smaller waste floating and polluting the working area environment and affecting the health of personnel.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A scrap cutter for automotive stamping dies, comprising a scrap cutter assembly (1), wherein the scrap cutter assembly (1) includes a blade (11), characterized in that: The blade (11) is fitted with a scraping assembly (2) on the outside. The scraping assembly (2) includes a rectangular frame (21). Both sides of the rectangular frame (21) are provided with cavities (23). The rectangular frame (21) is provided with two scrapers (22) on the inside. The two scrapers (22) are respectively located on both sides of the blade (11). The two scrapers (22) are fixed with a sliding plate (24) on the side of the two scrapers (22) that are far apart. The two sliding plates (24) extend into the two cavities (23) respectively. Electromagnets (25) are fixed to the inner walls of both cavities (23). The electromagnets (25) are located on the side of the slide plate (24) away from the scraper (22). The electromagnets (25) can attract the slide plate (24). Each of the two scrapers (22) has a sliding rod (26) fixed on the side away from each other. The two sliding rods (26) extend into the two cavities (23) respectively. The sliding rods (26) are located outside the slide plate (24) and the electromagnet (25). The end of the sliding rod (26) away from the scraper (22) is connected to the inner wall of the cavity (23) by a spring (27).

2. The scrap cutter for automotive stamping dies according to claim 1, characterized in that: Rubber pads (28) are fixed on the side of the two scrapers (22) that are close to each other.

3. The scrap cutter for automotive stamping dies according to claim 1, characterized in that: The rectangular frame (21) has a U-shaped suction chamber (29) inside. The suction chamber (29) is located at the bottom of the cavity (23). The suction chamber (29) has multiple suction holes (210) communicating with the suction chamber (29) on its inner side. The outer wall of the rectangular frame (21) is fixed with a suction pipe (211) communicating with the suction chamber (29). The suction pipe (211) is connected to a vacuum fan and is used to absorb the waste scraped off the blade (11).

4. The scrap cutter for automotive stamping dies according to claim 1, characterized in that: The scraping assembly (2) has a support assembly (3) on one side of its top end. The support assembly (3) includes a vertical plate (31) on one side of the blade (11). A fixing plate (32) is fixed to the top of one side of the vertical plate (31). The bottom end of the vertical plate (31) is provided with two connecting rods (33). The top end of the connecting rod (33) extends into the interior of the vertical plate (31) and is slidably connected with the vertical plate (31). The bottom end of the connecting rod (33) is fixed to the top end of the rectangular frame (21). The outer wall of the vertical plate (31) is fixed with two bolts for fixing the connecting rods (33).

5. The scrap cutter for automotive stamping dies according to claim 4, characterized in that: A switch (34) is fixed at the bottom of the fixed plate (32), and a mounting block (35) is fixed at the bottom of the vertical plate (31) near the blade (11). A switch (36) is fixed at the top of the mounting block (35). The switch (34) and the switch (36) are dual-control switches.

6. The scrap cutter for automotive stamping dies according to claim 5, characterized in that: The blade (11) has a blade shell (12) on its top outer side. The outer wall of the blade shell (12) is provided with two bolts for fixing the blade (11). The blade shell (12) is located at the bottom of the switch (34). The blade housing (12) is fixed with a mounting plate (13) connected to the automobile stamping die on the side away from the vertical plate (31), and a trigger plate (14) is fixed on the side of the blade housing (12) close to the vertical plate (31). The trigger plate (14) is located on the top of the second switch (36).

7. A scrap cutter for automotive stamping dies according to claim 6, characterized in that: When the car stamping die drives the blade (11) to move down to cut the waste and the trigger plate (14) triggers the second switch (36), the electromagnet (25) is closed, and the scraper (22) is in close contact with the surface of the blade (11) under the elastic force of the spring (27); After cutting the waste material, the automotive stamping die drives the blade (11) to move upward so that the scraper (22) scrapes off the waste material on the surface of the blade (11). When the blade housing (12) triggers switch one (34), the electromagnet (25) activates the suction slide plate (24) to separate the scraper (22) from the blade (11).

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