High-precision slitting device for metal strip

Abstract

The application relates to a high-precision slitting device for metal strip material, which comprises a rack, a slitting assembly and a pre-processing assembly. The slitting assembly comprises two slitting rollers rotatably connected to the rack, a plurality of slitting knives and a slitting driving element. A plurality of shaft sleeves are coaxially fixed on the slitting rollers, the shaft sleeves are arranged at intervals between the slitting knives, the shaft sleeves on the two slitting rollers are arranged alternately, and the upper and lower adjacent slitting knives abut against the upper and lower sides of the strip material respectively. The pre-processing assembly comprises a pre-processing roller rotatably connected to the rack and a plurality of pre-cutting knives coaxially fixed on the pre-processing roller. The upper and lower pre-cutting knives are mutually opposed and abut against the upper and lower sides of the strip material respectively, and the pre-processing roller clamps the strip material. The pre-processing knives are used for extruding and cutting the strip material, so that grooves are formed on the surface of the strip material. When the strip material is cut subsequently, stress is concentrated on the grooves, so that the grooves of the strip material are prone to tearing, and the strip material can be cut only by a smaller force.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of metal slitting, in particular to a high-precision metal strip slitting device. BACKGROUND

[0002] In the process of metal product forming, the whole metal strip coil needs to be longitudinally slitted into a strip of a specific width, and then the metal strip is further processed.

[0003] At present, in the process of slitting the metal coil, the upper circular cutter and the lower circular cutter are used to extrude the metal coil, so that the metal coil at the position between the upper and lower circular cutters is plastically deformed to be torn and separated. However, the edges of the slitted strip are deformed due to the extrusion of the circular cutters, and there is a gap between the upper and lower circular cutters for the deformation of the metal strip, so that the tearing position of the metal strip cannot be accurately limited, thereby affecting the width of the finally slitted metal strip.

[0004] Therefore, a new technical solution is needed to solve the above problems. SUMMARY

[0005] In order to make the width of the cut metal strip meet the required size in the cutting process, the application provides a high-precision metal strip slitting device.

[0006] The high-precision metal strip slitting device provided by the application adopts the following technical solution:

[0007] A high-precision metal strip slitting device, comprising a rack, a slitting assembly arranged on the rack to slit the metal strip, and a pre-processing assembly for pre-cutting the metal strip, the pre-processing assembly is arranged on one side of the slitting assembly in the direction of the metal strip conveying;

[0008] The slitting assembly comprises two slitting rollers rotatably connected to the rack, a plurality of slitting cutters coaxially arranged on the slitting rollers, and a slitting driving member for driving the slitting rollers to rotate. The slitting cutters are arranged in the axial direction of the slitting rollers. A plurality of shaft sleeves are coaxially fixed on the slitting rollers and are arranged at intervals between the slitting cutters. The shaft sleeves on the two slitting rollers are staggered. The upper and lower slitting cutters close to each other abut the upper and lower sides of the metal strip, respectively.

[0009] The pre-processing assembly comprises a pre-processing roller rotatably connected to the rack and a plurality of pre-cutters coaxially fixed on the pre-processing roller. The upper and lower pre-cutters are mutually opposed and abut the upper and lower sides of the metal strip, respectively. The pre-processing roller clamps the metal strip.

[0010] By adopting the technical scheme, the strip is extruded and cut by the pre-processing cutter to process the groove on the surface of the strip, and when the subsequent slitting cutter applies the shearing force to the strip to cut the strip, the stress is concentrated at the groove, so that the strip is easy to tear at the groove, so that the strip can be cut off only by a smaller force, and in the case of reducing the force required for cutting the strip, the force applied by the slitting cutter required for cutting the strip is also reduced, thereby reducing the deformation of the cut strip.

[0011] Optionally, the rack is further provided with a plurality of scrapers for scraping burrs on the side walls of the cut strip, and the cutting edges of the scrapers face the conveying direction of the strip.

[0012] By adopting the technical scheme, the burrs on the side walls of the strip are scraped by the scrapers after cutting, thereby reducing the number of burrs on the surface of the strip and preventing the subsequent processing process from being affected.

[0013] Optionally, the rack is further provided with a conveying mechanism for separating and conveying the strip and shaping the strip, the conveying mechanism comprising a plurality of upper conveying rollers arranged on the rack and a plurality of lower conveying rollers arranged on the rack, the strip between the upper slitting cutters passes between the upper conveying rollers, and the strip between the lower slitting cutters passes between the lower conveying rollers.

[0014] By adopting the technical scheme, the surface of the strip is extruded by the conveying rollers before the burrs are scraped, so that the strip can be restored to a flat state, and the scraping cutter can stably abut the position on the strip where the burrs are connected during the subsequent burr scraping process, so that the scraping cutter can better scrape the burrs on the strip.

[0015] Optionally, the rack is further provided with a plurality of limiting rollers for limiting the movement of the strip, the limiting rollers are arranged on both sides of the strip and can abut the side walls of the strip, and the limiting rollers are arranged at both ends of the scraping cutter parallel to the conveying direction of the strip.

[0016] By adopting the technical scheme, the movement direction of the strip is limited by the limiting rollers, so that the position of the strip remains determined during movement, thereby preventing the relative position between the scraping cutter and the strip from changing, and the scraping cutter can stably scrape the burrs on the side walls of the strip.

[0017] Optionally, the rack is provided with a driving assembly for driving the scraper to vertically reciprocate, the driving assembly comprises a rotating disc rotatably connected to the rack, a connecting rod rotatably connected to the rotating disc, a sliding block vertically sliding on the rack, and a linkage driving member for driving the rotating disc to rotate, the rotating axis of the rotating disc is horizontally arranged, the connecting rod is offset from the rotating axis of the rotating disc, the other end of the connecting rod is rotatably connected to the sliding block, and the scraper is arranged on the sliding block.

[0018] By using the above technical scheme, during the strip conveying process, the scraper can vertically reciprocate under the pushing of the driving assembly, so that the contact position of the blade of the scraper with the strip can be changed constantly, the wear of the blade of the scraper is more uniform, and the service life of the scraper is increased.

[0019] Optionally, the linkage driving member comprises a speed reducer, the input end of the speed reducer is connected to the limiting roller close to the scraper, and the output end of the speed reducer is connected to the rotating disc.

[0020] By using the above technical scheme, during the rotation of the limiting roller, the driving assembly is driven to work, so that the work of the driving assembly does not need to be provided with an additional power source, the driving assembly automatically works during the movement of the strip, and the driving assembly also stops working during the non-working process of the strip, so that the start and stop of the driving assembly do not need to be controlled, and the use process of the driving assembly is more convenient.

[0021] Optionally, the rack is provided with a sliding seat, the driving assembly and the limiting roller are arranged on the sliding seat, a plurality of fastening bolts are arranged on the sliding seat, and the fastening bolts are threadedly connected to the sliding seat and abut against the rack.

[0022] By using the above technical scheme, after the width of the processed strip changes, the position of the sliding seat is adjusted, so that the limiting roller and the scraper can still abut against the side wall of the strip, and strips of different sizes can be processed.

[0023] Optionally, the rack is provided with two groups of collecting grooves for containing the removed burrs, the collecting grooves are arranged below the scraper, the collecting grooves are arranged perpendicular to the conveying direction of the strip, and the two ends of the collecting grooves are arranged in an open manner.

[0024] By using the above technical scheme, after the burrs are removed by the scraper, the removed burrs fall into the collecting grooves, and then the removed burrs are collected through the collecting grooves.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. Before slitting, pre-process the areas on the strip that need to be slitted, thereby creating grooves on the strip surface at the slitting locations. During the subsequent slitting process, the stress on the strip is concentrated at the grooves, making the strip more prone to breakage at the grooves. This makes it easier for the slitting dimensions of the strip to meet the standards.

[0027] 2. After slitting, the scraper contacts the side wall of the strip to remove burrs. The scraper moves vertically back and forth under the drive of the drive assembly, so that the contact position between the scraper and the strip is constantly changing. This prevents the wear of the scraper from being concentrated in one place, and allows the blade of the scraper to wear evenly, thus increasing the service life of the scraper. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0029] Figure 2 This is a schematic diagram illustrating the structure of the conveying mechanism according to an embodiment of this application;

[0030] Figure 3 for Figure 2 Enlarged view of part A.

[0031] In the diagram, 1 is the frame; 11 is the limiting roller; 12 is the sliding seat; 13 is the collecting trough; 2 is the slitting assembly; 21 is the slitting roller; 22 is the slitting blade; 23 is the slitting drive component; 24 is the bushing; 3 is the pre-processing assembly; 31 is the pre-processing roller; 32 is the pre-cutting blade; 4 is the conveying mechanism; 41 is the upper conveying roller; 42 is the lower conveying roller; 5 is the scraper; 6 is the drive assembly; 61 is the turntable; 62 is the connecting rod; 63 is the sliding block; and 64 is the linkage drive component. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] This application discloses a high-precision slitting and processing device for metal strips, such as... Figure 1 As shown, it includes a frame 1, a slitting assembly 2 disposed on the frame 1 for slitting metal strip, and a pre-processing assembly 3 for pre-cutting metal strip. The pre-processing assembly 3 is disposed on the side of the slitting assembly 2 facing the strip conveying direction, thereby pre-processing the strip.

[0034] The pre-processing assembly 3 comprises two pre-processing rollers 31 rotatably connected to the frame 1, and a plurality of pre-cutting knives 32 coaxially fixed to the pre-processing rollers 31. The frame 1 is vertically slidably provided with adjusting blocks, and a bidirectional screw is provided through the two adjusting blocks on the same side of the frame 1. The two adjusting blocks on the same bidirectional screw are connected to the bidirectional screw with different thread options. The two pre-processing rollers 31 on the upper and lower sides are rotatably connected to the adjusting blocks and can vertically move along the adjusting blocks. The two pre-processing rollers 31 abut against the upper and lower sidewalls of the strip, thereby jointly clamping the strip. The pre-cutting knives 32 arranged on the pre-processing rollers 31 are arranged in the axial direction of the pre-processing rollers 31, and the pre-cutting knives 32 on the upper and lower pre-processing rollers 31 are aligned with each other. After the pre-processing rollers 31 clamp the strip, the pre-cutting knives 32 pre-process the positions of the strip where the separation occurs, so as to pre-process grooves at the positions where the strip needs to be cut.

[0035] The slitting assembly 2 comprises two slitting rollers 21, a plurality of slitting knives 22 coaxially arranged on the slitting rollers 21, and a slitting driving member 23 for driving the slitting rollers 21 to rotate. The slitting rollers 21 are rotatably connected to the two vertically arranged adjusting blocks. The slitting knives 22 are sleeved on the slitting rollers 21. A plurality of shaft sleeves 24 are coaxially sleeved on the slitting rollers 21. The shaft sleeves 24 are arranged between adjacent slitting knives 22. The slitting knives 22 are fixed to the shaft sleeves 24 by bolts. The shaft sleeves 24 are fixed to the slitting rollers 21 by bolts. The slitting knives 22 connected to different shaft sleeves 24 are provided with gaps for the strip to pass through. The slitting knives 22 close to each other on the upper and lower slitting rollers 21 are arranged on the two sides of the grooves processed by the pre-cutting knives 32. The two slitting knives 22 jointly apply a force close to each other to the strip. The stress at the groove on the surface of the strip is concentrated to damage the strip, so that the strip is more easily broken along the groove, thereby realizing the separation of the strip, and the force borne by the strip during the separation is reduced, so that the deformation of the strip is smaller.

[0036] As shown in Figure 2 Since the strip is deformed at the separation position after being slit due to the force applied by the slitting knives 22, the frame 1 is further provided with a conveying mechanism 4 for separating and shaping the strip. The conveying mechanism 4 comprises two upper conveying rollers 41 arranged on the frame 1 and two lower conveying rollers 42 arranged on the frame 1. The upper conveying rollers 41 are arranged above the lower conveying rollers 42. The upper conveying rollers 41 are vertically arranged. The strip between the slitting knives 22 of the upper slitting roller 21 passes between the upper conveying rollers 41, thereby realizing the shaping of the strip. The lower conveying rollers 42 are vertically arranged. The strip between the slitting knives 22 of the lower slitting roller 21 passes between the lower conveying rollers 42, thereby realizing the shaping of the strip.

[0037] Since the strip will produce some burrs on its sidewall due to deformation tearing in the process of slitting, the rack 1 is further provided with a scraper 5 for scraping the burrs on the sidewall of the strip. The blade of the scraper 5 faces away from the conveying direction of the strip, and the blade of the scraper 5 abuts against the sidewall of the strip, thereby scraping the burrs.

[0038] As shown in Figure 2 and Figure 3 , since the position of the strip is not limited during movement, the position between the scraper 5 and the strip cannot be limited, thereby affecting the scraping of the burrs by the scraper 5. Therefore, the rack 1 is further provided with a plurality of limiting rollers 11 for guiding the movement of the strip. The limiting rollers 11 are respectively arranged on both sides of the conveying direction of the strip, and the limiting rollers 11 are located at both ends of the scraper 5 parallel to the conveying direction of the strip. The limiting rollers 11 abut against the sidewall of the strip to guide the movement of the strip, so that the relative position between the strip and the scraper 5 is not easily changed, thereby also making the scraping of the burrs by the scraper 5 not easily affected.

[0039] The rack 1 is slidably provided with a plurality of sliding seats 12, which are respectively arranged on both sides of the strip. The sliding direction of the sliding seat 12 is perpendicular to the conveying direction of the strip. A plurality of fastening bolts are threadedly provided on the sliding seat 12, and the fastening bolts are connected to the rack 1 through the sliding seat 12. The limiting rollers 11 are rotationally connected to the sliding seat 12, so that after the size of the strip changes, the position of the sliding seat 12 can be adjusted to make the limiting rollers 11 remain in abutment with the strip.

[0040] Since the contact position between the strip and the scraper 5 remains unchanged during the process of the cutter scraping the burrs of the strip, the position where the scraper 5 contacts the strip will be continuously worn. After the scraper 5 is worn, the scraper 5 needs to be replaced, thereby affecting the processing efficiency. Therefore, the rack 1 is further provided with a driving assembly 6 for driving the scraper 5 to vertically reciprocate. The driving assembly 6 includes a rotating disc 61 rotationally connected to the sliding seat 12, a connecting rod 62 rotationally connected to the rotating disc 61, a sliding block 63 vertically sliding on the sliding seat 12, and a linkage driving member 64 for driving the rotating disc 61 to rotate. The rotating axis of the rotating disc 61 is horizontally arranged and parallel to the conveying direction of the strip. The connecting rod 62 is offset from the rotating axis of the rotating disc 61. The other end of the connecting rod 62 is rotationally connected to the sliding block 63, and the scraper 5 is fixed to the sliding block 63 by bolts, so that the scraper 5 can vertically reciprocate under the rotation of the rotating disc 61, so that the scraper 5 does not always have a position contacting the strip.

[0041] The linkage driving member 64 is a reducer which is fixed on the sliding frame by bolts, the input end of the reducer is coaxially fixed with a limiting roller 11 through a shaft coupling, and the output end of the reducer is connected to the rotating shaft of the rotating disc 61 through a shaft coupling, so that the rotating disc 61 is driven to move by the limiting roller 11, and the automatic vertical movement of the scraper 5 is realized.

[0042] As shown in Figure 2 Since the burrs will fall after being scraped by the scraper 5, two collecting grooves 13 for containing the scraped burrs are also fixed on the rack 1 by bolts, the collecting grooves 13 are provided with an upper opening, and the collecting grooves 13 are respectively arranged below the scraper 5. The two ends of the collecting groove 13 are provided with openings, and the two ends of the collecting groove 13 extend out of the rack 1, so that the burrs scraped by the scraper 5 can be taken out from the collecting groove 13 through the two end openings of the collecting groove 13 after the burrs fall into the collecting groove 13.

[0043] The implementation principle of the embodiment is that the strip enters the pre-processing assembly 3, the pre-cutting knife 32 extrudes and cuts the positions to be broken on the upper and lower sides of the strip, so that a groove is formed on the surface of the strip at the positions to be broken, and then enters the slitting assembly 2, the slitting knife 22 applies a shearing force to the strip, so that the stress is concentrated in the groove, and the strip is broken along the groove. After slitting is completed, the adjacent strip passes between the upper and lower guide rollers, and the strip is pressed when passing between the upper conveying roller 41 or the lower conveying roller 42, so that the strip is flattened, and then the scraper 5 contacts the strip to scrape the burrs on the strip. In the process of driving the limiting roller 11 to rotate by the strip, the driving assembly 6 drives the scraper 5 to move vertically and reciprocally. The scraped burrs fall into the collecting groove 13, and after accumulating for a period of time, the burrs are collected from the openings at the ends of the collecting groove 13.

[0044] The embodiments of the specific embodiment are the preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A high-precision slitting and processing device for metal strip, characterized in that: The utility model relates to a metal strip cutting device, including frame (1), set up on frame (1) and carry out the slitting component (2) of metal strip and be used for carrying out the pre -processing component (3) of metal strip pre -cutting, the pre -processing component (3) is set up on the one side of slitting component (2) towards the band material conveying direction, The slitting component (2) includes two slitting rollers (21) rotatably connected to the frame (1), a plurality of slitting knives (22) coaxially arranged on the slitting rollers (21), and a slitting driving member (23) driving the slitting rollers (21) to rotate, the slitting knives (22) are arranged along the axial direction of the slitting rollers (21), a plurality of shaft sleeves (24) are coaxially fixed on the slitting rollers (21), the shaft sleeves (24) are arranged between the slitting knives (22), and the shaft sleeves (24) on the two slitting rollers (21) are arranged alternately, the upper and lower two adjacent slitting knives (22) abut the upper and lower sides of the strip respectively. The pre-processing component (3) includes a pre-processing roller (31) rotatably connected to the frame (1) and a plurality of pre-cutting knives (32) coaxially fixed on the pre-processing roller (31), the upper and lower two pre-cutting knives (32) are aligned with each other and abut the upper and lower sides of the strip respectively, and the pre-processing roller (31) clamps the strip together, and the pre-cutting knives are used for extruding and cutting the strip, so as to process grooves on the surface of the strip. The upper and lower two adjacent slitting knives (22) on the slitting rollers (21) are arranged on both sides of the grooves processed by the pre-cutting knives (32), and the two slitting knives (22) jointly apply a force to the strip.

2. The high-precision slitting device for metal strip according to claim 1, characterized in that: A plurality of scrapers (5) are arranged on the frame (1) to scrape burrs on the side walls of the cut strip, and the cutting edges of the scrapers (5) face the conveying direction of the strip.

3. The high-precision slitting device for metal strip according to claim 1, characterized in that: A conveying mechanism (4) is arranged on the frame (1) to separate and convey the strip and shape the strip, the conveying mechanism (4) includes a plurality of upper conveying rollers (41) arranged on the frame (1) and a plurality of lower conveying rollers (42) arranged on the frame (1), the strip between the upper slitting knives (22) passes between the upper conveying rollers (41), and the strip between the lower slitting knives (22) passes between the lower conveying rollers (42).

4. The high-precision slitting device for metal strip according to claim 2, characterized in that: A plurality of limiting rollers (11) are arranged on the frame (1) to limit the movement of the strip, the limiting rollers (11) are arranged on both sides of the strip and can abut the side walls of the strip, and the limiting rollers (11) are arranged at both ends of the scrapers (5) parallel to the conveying direction of the strip.

5. The high-precision slitting device for metal strip according to claim 4, characterized in that: The rack (1) is provided with a driving assembly (6) driving the scraper (5) to vertically reciprocate, the driving assembly (6) comprises a rotating disc (61) rotatably connected to the rack (1), a connecting rod (62) rotatably connected to the rotating disc (61), a sliding block (63) vertically sliding on the rack (1) and a linkage driving member (64) driving the rotating disc (61) to rotate, the rotating axis of the rotating disc (61) is horizontally arranged, the connecting rod (62) is offset from the rotating axis of the rotating disc (61), the other end of the connecting rod (62) is rotatably connected to the sliding block (63), and the scraper (5) is arranged on the sliding block (63).

6. The high-precision slitting device for metal strip according to claim 5, characterized in that: The linkage driving member (64) comprises a speed reducer, the input end of the speed reducer is connected to the limiting roller (11) close to the scraper (5), and the output end of the speed reducer is connected to the rotating disc (61).

7. The high-precision slitting device for metal strip according to claim 6, characterized in that: The sliding seat (12) is slidingly arranged on the rack (1), the driving assembly (6) and the limiting roller (11) are arranged on the sliding seat (12), a plurality of fastening bolts are arranged on the sliding seat (12), the fastening bolts are threadedly connected with the sliding seat (12) and abut against the rack (1).

8. The high-precision slitting device for metal strip according to claim 7, characterized in that: The rack (1) is provided with two groups of collecting grooves (13) for containing the removed burrs, the collecting grooves (13) are arranged below the scraper (5), the collecting grooves (13) are arranged perpendicular to the conveying direction of the strip, and the two ends of the collecting grooves (13) are open.

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