Eccentric stripping mechanism for precision strip cutting machine

Abstract

This utility model belongs to the technical field of precision metal strip slitting machines, and discloses an eccentric stripping mechanism for precision strip slitting machines. It includes a fixed frame and a movable frame, with a lower cutter shaft and an upper cutter shaft positioned between the fixed and movable frames. An eccentric stripping mechanism is also provided between the fixed and movable frames. When slitting strips of different thicknesses, the eccentric position of the upper stripping ring is changed by adjusting the height of the first outlet pressure roller and the first inlet pressure roller on both sides of the upper stripping ring, in conjunction with the lower blade. Alternatively, the eccentric position of the lower stripping ring is changed by adjusting the left and right positions of the second outlet pressure roller and the second inlet pressure roller on both sides of the lower stripping ring, in conjunction with the upper blade. When the upper and lower cutter shafts rotate for slitting, the eccentric stripping ring generates radial thrust at the moment of strip slitting, forcibly peeling the cut narrow strip from the blade and blade pad surface, completely solving the problems of "sticking to the blade," "flanged burrs," and "scratching the strip surface."

Description

Technical Field

[0001] This utility model relates to the technical field of precision metal strip slitting machines, specifically to an eccentric stripping mechanism for precision strip slitting machines. Background Technology

[0002] In the slitting process of precision metal strips (such as precious metal foils, soft non-ferrous metal strips, and composite strips), slitting machines need to cut wide strips into multiple narrow strips according to preset dimensions. Existing slitting machines often use conventional rubber ring or bakelite strip ejection mechanisms. After slitting, due to strip tension fluctuations, residual sticky substances on the blade edge, or the strip's own ductility, the narrow strips tend to stick to the blade or blade pad surface, resulting in phenomena such as "blade sticking," "flanged burrs," and "scratches on the strip surface."

[0003] Currently, domestic equipment uses a method of adding a rubber ring or horizontal bakelite strip of the same size as the blades between the blades to separate the strip from the blades at the cut. However, the rubber ring is too narrow and lacks elasticity, or its elasticity varies greatly depending on temperature, leading to unstable performance. Bakelite strips are practically ineffective for finished strips less than 5mm wide, and they can scratch the surface of delicate, soft strips. Summary of the Invention

[0004] The purpose of this invention is to provide an eccentric stripping mechanism for a precision strip slitting machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An eccentric stripping mechanism for a precision strip slitting machine includes a base. A fixed panel and a movable panel are symmetrically arranged on the surface of the base. A lower cutter shaft and an upper cutter shaft are located between the fixed and movable panels. The surface of the lower cutter shaft is provided with multiple lower blades, a lower blade pad, and a lower stripping ring. The surface of the upper cutter shaft is provided with multiple upper blades, an upper blade pad, and an upper stripping ring. The upper and lower blades are staggered and interlocked.

[0007] An eccentric unloading mechanism is also provided between the fixed archway and the movable archway. The eccentric unloading mechanism includes a rotating support and a support seat symmetrically arranged on the surface of the base. A frame is movably connected to the rotating support. A second inlet pressure roller is provided between the support seats. A second outlet pressure roller, a first outlet pressure roller, and a first inlet pressure roller are provided between the frames. The two ends of the second inlet pressure roller, the second outlet pressure roller, the first outlet pressure roller, and the first inlet pressure roller are respectively connected to the support seat and the frame through an adjustment mechanism.

[0008] More preferably, the surface of the lower blade shaft is provided with a plurality of lower blades, and a lower blade pad is provided between adjacent lower blades, and a lower stripping ring is eccentrically provided on the outer side of the lower blade pad;

[0009] The upper cutter shaft surface is provided with multiple upper blades, and an upper blade pad is provided between adjacent upper blades. An upper stripping ring is eccentrically provided on the outer side of the upper blade pad.

[0010] The upper blade and the lower stripping ring are aligned in the radial direction of the upper blade shaft, and the lower blade and the upper stripping ring are aligned in the radial direction of the lower blade shaft.

[0011] More preferably, the frame includes L-shaped columns connected to a rotating support, and multiple tie rods are provided between the columns.

[0012] More preferably, the second outlet pressure roller is disposed between the long sides of the two columns, the second outlet pressure roller and the second inlet pressure roller are at the same horizontal position, and the second outlet pressure roller and the second inlet pressure roller are respectively disposed on both sides of the lower discharge ring;

[0013] The first outlet pressure roller and the first inlet pressure roller are disposed between the short sides of the two columns, and the first outlet pressure roller and the first inlet pressure roller are respectively disposed on both sides of the upper stripping ring.

[0014] More preferably, the column and the rotating support are movably connected by a pin, and the end of the column away from the rotating support is connected to the fixed archway or the movable archway by a stop block.

[0015] More preferably, the adjustment mechanism includes fixed supports symmetrically arranged between the columns or support bases, a gearbox connected to the bottom of the fixed supports, meshing bevel gears inside the gearbox, a transmission main shaft arranged between the bevel gears parallel to the axis of the upper or lower cutter shaft, and a first adjusting screw and a second adjusting screw respectively passing through the fixed supports at the center of the bevel gears perpendicular to the axis of the upper or lower cutter shaft.

[0016] More preferably, a nut is provided at the connection point between the first adjusting screw and the top of the fixed support, and the first adjusting screw and the second adjusting screw are respectively screwed into the nuts at the top of the corresponding fixed support.

[0017] More preferably, when the fixed support is disposed between the two support seats, a second inlet pressure roller is rotatably connected to the outside of the transmission main shaft, and the first adjusting screw and the second adjusting screw are used to adjust the left and right positions of the second inlet pressure roller.

[0018] More preferably, when the fixed support is positioned between the long sides of the two columns, a second outlet pressure roller is rotatably connected to the outer side of the transmission main shaft, and the first adjusting screw and the second adjusting screw are used to adjust the left and right positions of the second outlet pressure roller.

[0019] More preferably, when the two sets of fixed supports are arranged between the short sides of the two columns, the outer sides of the two transmission main shafts are respectively rotatably connected to the first outlet pressure roller and the first inlet pressure roller, and the two sets of first adjusting screws and second adjusting screws are respectively used to adjust the upper and lower positions of the first outlet pressure roller and the first inlet pressure roller.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] The upper stripping ring and the upper blade pad are eccentrically positioned, as are the lower stripping ring and the lower blade pad. Furthermore, the upper blade and the lower stripping ring, and the lower blade and the upper stripping ring, are radially collinear. When the upper and lower blade shafts rotate to cut, the eccentric stripping ring generates radial thrust at the moment of strip cutting, forcibly separating the cut narrow strip from the blade and blade pad surfaces. This completely solves the problems of "sticking to the blade," "flanged burrs," and "scratching the strip surface," increasing the stripping success rate to over 99%. After extrusion, the finished strip moves linearly in the horizontal direction. The eccentric stripping ring rotates with the strip, preventing scratches on the strip surface and thus achieving the most ideal finished strip quality.

[0022] Meanwhile, when slitting strips of different thicknesses, the height of the first exit pressure roller and the first inlet pressure roller on both sides of the upper stripping ring can be adjusted by the adjustment mechanism, thereby changing the eccentric position of the upper stripping ring with the cooperation of the lower blade; or the left and right positions of the second exit pressure roller and the second inlet pressure roller on both sides of the lower stripping ring can be adjusted by the adjustment mechanism, thereby changing the eccentric position of the lower stripping ring with the cooperation of the upper blade; thus satisfying the work of slitting strips of different thicknesses. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a side view of the overall structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the eccentric unloading mechanism of this utility model;

[0026] Figure 4 This is a side view of the eccentric unloading mechanism of this utility model;

[0027] Figure 5 This is a top view of the frame structure of this utility model;

[0028] In the diagram: 1. Lower cutter shaft; 2. Upper cutter shaft; 3. Upper blade; 4. Upper blade pad; 5. Upper stripper ring; 6. Lower blade; 7. Lower blade pad; 8. Lower stripper ring; 9. First outlet pressure roller; 10. First inlet pressure roller; 11. Second outlet pressure roller; 12. Second inlet pressure roller; 13. Support base; 14. Tie rod; 15. Frame; 16. First adjusting screw; 17. Pin; 18. Rotary support; 19. Second adjusting screw; 20. Nut; 21. Fixed support; 22. Gearbox; 23. Bevel gear; 24. Transmission main shaft; 25. Stop block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-5 This utility model provides a technical solution:

[0031] An eccentric stripping mechanism for a precision strip slitting machine includes a base. A fixed frame and a movable frame are symmetrically arranged on the surface of the base. A lower cutter shaft 1 and an upper cutter shaft 2 are located between the fixed and movable frames. The surface of the lower cutter shaft 1 is provided with multiple lower blades 6, a lower blade pad 7, and a lower stripping ring 8. The surface of the upper cutter shaft 2 is provided with multiple upper blades 3, upper blade pads 4, and an upper stripping ring 5. The upper blades 3 and lower blades 6 are interlocked and staggered.

[0032] An eccentric unloading mechanism is also provided between the fixed archway and the movable archway. The eccentric unloading mechanism includes a rotating support 18 and a support base 13 symmetrically arranged on the surface of the base. A frame 15 is movably connected to the rotating support 18. A second inlet pressure roller 12 is provided between the support bases 13. A second outlet pressure roller 11, a first outlet pressure roller 9, and a first inlet pressure roller 10 are provided between the frames 15. The two ends of the second inlet pressure roller 12, the second outlet pressure roller 11, the first outlet pressure roller 9, and the first inlet pressure roller 10 are respectively connected to the support base 13 and the frame 15 through an adjustment mechanism.

[0033] In this utility model, a plurality of lower blades 6 are provided on the surface of the lower blade shaft 1, and a lower blade pad 7 is provided between adjacent lower blades 6. A lower stripping ring 8 is eccentrically provided on the outer side of the lower blade pad 7.

[0034] The upper blade shaft 2 is provided with multiple upper blades 3, and an upper blade pad 4 is provided between adjacent upper blades 3. An upper stripping ring 5 is eccentrically provided on the outer side of the upper blade pad 4.

[0035] The upper blade 3 and the lower stripper ring 8 are aligned in the radial direction of the upper blade shaft 2, and the lower blade 6 and the upper stripper ring 5 are aligned in the radial direction of the lower blade shaft 1.

[0036] In this invention, the frame 15 includes L-shaped columns connected to the rotating support 18, with multiple tie rods 14 arranged between the columns. The second outlet pressure roller 11 is located between the long sides of the two columns, and the second outlet pressure roller 11 and the second inlet pressure roller 12 are at the same horizontal position. The second outlet pressure roller 11 and the second inlet pressure roller 12 are respectively located on both sides of the lower stripping ring 8. The first outlet pressure roller 9 and the first inlet pressure roller 10 are located between the short sides of the two columns, and the first outlet pressure roller 9 and the first inlet pressure roller 10 are respectively located on both sides of the upper stripping ring 5.

[0037] In this invention, the column and the rotating support 18 are movably connected by a pin 17, facilitating the rotation of the frame 15 during tool changing and providing sufficient space for tool changing. The end of the column away from the rotating support 18 is connected to a fixed or movable archway via a stop block 25. The stop blocks 25 on both sides, the column, the fixed archway, and the movable archway are fixedly connected together by fixing bolts, ensuring good stability of the entire eccentric unloading mechanism during use.

[0038] In this invention, the adjustment mechanism includes fixed supports 21 symmetrically arranged between columns or support bases 13. A gearbox 22 is connected to the bottom of the fixed supports 21. The gearbox 22 contains meshing bevel gears 23. A transmission shaft 24 is arranged between the bevel gears 23, which are parallel to the axis of the upper cutter shaft 2 or the lower cutter shaft 1. The transmission shaft 24 passes through the gearbox 22 horizontally, and bearings are provided at both ends of the transmission shaft 24 where it connects to the gearbox 22. A first adjusting screw 16 and a second adjusting screw 19 are respectively connected to the fixed supports 21 at the center of the bevel gears 23, which are perpendicular to the axis of the upper cutter shaft 2 or the lower cutter shaft 1. Nuts 20 are provided at the connection points of the first adjusting screw 16 and the second adjusting screw 19 to the top of the fixed supports 21, and the first adjusting screw 16 and the second adjusting screw 19 are respectively screwed into the nuts 20 at the top of the corresponding fixed supports 21.

[0039] In this utility model, when the fixed support 21 is set between two support seats 13, the outer side of the transmission main shaft 24 is rotatably connected to the second inlet pressure roller 12, and the first adjusting screw 16 and the second adjusting screw 19 are used to adjust the left and right positions of the second inlet pressure roller 12.

[0040] When the fixed support 21 is set between the long sides of the two columns, the second outlet pressure roller 11 is rotatably connected to the outside of the transmission main shaft 24, and the first adjusting screw 16 and the second adjusting screw 19 are used to adjust the left and right positions of the second outlet pressure roller 11.

[0041] When the two sets of fixed supports 21 are set between the short sides of the two columns, the outer sides of the two transmission main shafts 24 are respectively rotatably connected to the first outlet pressure roller 9 and the first inlet pressure roller 10, and the two sets of first adjusting screws 16 and second adjusting screws 19 are respectively used to adjust the upper and lower positions of the first outlet pressure roller 9 and the first inlet pressure roller 10.

[0042] Example: In use, first determine the thickness of the strip to be cut. Based on the strip thickness, adjust the eccentric position of the upper stripping ring 5 and the lower stripping ring 8 using the adjusting mechanism. During adjustment, when the upper stripping ring 5 is in the correct position, adjust the height of the first exit pressure roller 9 and the first inlet pressure roller 10 by using the first adjusting screw 16 or the second adjusting screw 19 connected to both ends of the first exit pressure roller 9 and the first inlet pressure roller 10. This, combined with the position of the lower blade 6, achieves three-point positioning to adjust the eccentric position of the upper stripping ring 5. Taking the adjustment of the vertical position of the first exit pressure roller 9 as an example, by rotating either the first adjusting screw 16 or the second adjusting screw 19, under the action of the meshing bevel gear 23 and the transmission main shaft 24, the other end of the first adjusting screw 16 or the second adjusting screw 19 will rotate synchronously, thereby ensuring that the first exit pressure roller 9 moves horizontally upward or downward. Similarly, the adjustment method of the first inlet pressure roller 10 is the same as that of the first outlet pressure roller 9. When adjusting the left and right positions of the second outlet pressure roller 11 and the second inlet pressure roller 12, the adjustment method is also the same as that of the first outlet pressure roller 9. The only difference is that the second outlet pressure roller 11 and the second inlet pressure roller 12, together with the blade 3, achieve three-point positioning of the lower stripping ring 8, thereby achieving the function of adjusting the eccentric position of the lower stripping ring 8.

[0043] After adjustment, during the slitting process, the upper stripping ring 5 and the upper blade pad 4 are eccentrically positioned, and the lower stripping ring 8 and the lower blade pad 7 are eccentrically positioned. Furthermore, the upper blade 3 and the lower stripping ring 8, and the lower blade 6 and the upper stripping ring 5 are radially collinear. When the upper blade shaft 2 and the lower blade shaft 1 rotate in opposite directions for slitting, the upper stripping ring 5 and the lower stripping ring 8 generate radial thrust at the moment of strip cutting, forcibly peeling the cut narrow strip from the surfaces of the upper blade 3 and the lower stripping ring 8, or the lower blade 6 and the upper stripping ring 5. This completely solves the problems of "sticking to the blade," "flanged burrs," and "scratching the strip surface," increasing the stripping success rate to over 99%. After extrusion, the finished strip moves linearly in the horizontal direction. The upper stripping ring 5 and the lower stripping ring 8 rotate with the strip, preventing scratches on the strip surface, thus achieving the most ideal finished strip quality.

[0044] Before slitting strips of different widths, when it is necessary to replace the corresponding upper blade 3 and lower blade 6, first remove the block 25 connecting the upright of the frame 15 with the fixed and movable arches. Then, rotate the entire frame 15 in the strip slitting direction under the action of the pin 17, so that the frame 15 is disengaged from the position of the upper blade 3 and lower blade 6, ensuring the space for blade replacement and avoiding collisions during blade replacement.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An eccentric stripping mechanism for a precision strip slitting machine, comprising a base, wherein a fixed frame and a movable frame are symmetrically arranged on the surface of the base, and a lower cutter shaft (1) and an upper cutter shaft (2) are provided between the fixed frame and the movable frame, characterized in that: The surface of the lower cutter shaft (1) is provided with a plurality of lower blades (6), a lower blade pad (7) and a lower stripping ring (8); the surface of the upper cutter shaft (2) is provided with a plurality of upper blades (3), an upper blade pad (4) and an upper stripping ring (5), and the upper blades (3) and the lower blades (6) are interlocked and arranged in an alternating manner; An eccentric unloading mechanism is also provided between the fixed archway and the movable archway. The eccentric unloading mechanism includes a rotating support (18) and a support base (13) symmetrically arranged on the surface of the base. A frame (15) is movably connected to the rotating support (18). A second inlet pressure roller (12) is provided between the support bases (13). A second outlet pressure roller (11), a first outlet pressure roller (9), and a first inlet pressure roller (10) are provided between the frames (15). The two ends of the second inlet pressure roller (12), the second outlet pressure roller (11), the first outlet pressure roller (9), and the first inlet pressure roller (10) are respectively connected to the support base (13) and the frame (15) through an adjustment mechanism. The surface of the lower blade shaft (1) is provided with a plurality of lower blades (6), and a lower blade pad (7) is provided between adjacent lower blades (6). A lower stripping ring (8) is eccentrically provided on the outer side of the lower blade pad (7). The upper blade shaft (2) is provided with a plurality of upper blades (3), and an upper blade pad (4) is provided between adjacent upper blades (3). An upper stripping ring (5) is eccentrically provided on the outer side of the upper blade pad (4). The upper blade (3) and the lower stripping ring (8) are aligned in the radial direction of the upper blade shaft (2), and the lower blade (6) and the upper stripping ring (5) are aligned in the radial direction of the lower blade shaft (1).

2. The eccentric stripping mechanism for a precision strip slitting machine according to claim 1, characterized in that: The frame (15) includes L-shaped columns connected to the rotating support (18), and multiple tie rods (14) are provided between the columns.

3. The eccentric stripping mechanism for a precision strip slitting machine according to claim 2, characterized in that: The second outlet pressure roller (11) is located between the long sides of the two columns. The second outlet pressure roller (11) and the second inlet pressure roller (12) are at the same horizontal position, and the second outlet pressure roller (11) and the second inlet pressure roller (12) are respectively located on both sides of the lower discharge ring (8). The first outlet pressure roller (9) and the first inlet pressure roller (10) are located between the short sides of the two columns, and the first outlet pressure roller (9) and the first inlet pressure roller (10) are respectively located on both sides of the upper stripping ring (5).

4. The eccentric stripping mechanism for a precision strip slitting machine according to claim 2, characterized in that: The column and the rotating support (18) are movably connected by a pin (17), and the end of the column away from the rotating support (18) is connected to the fixed archway or the movable archway by a stop block (25).

5. The eccentric stripping mechanism for a precision strip slitting machine according to claim 2, characterized in that: The adjustment mechanism includes fixed supports (21) symmetrically arranged between the columns or support bases (13). A gearbox (22) is connected to the bottom of the fixed supports (21). The gearbox (22) is provided with meshing bevel gears (23). A transmission main shaft (24) is provided between the bevel gears (23) that are parallel to the axis of the upper cutter shaft (2) or the lower cutter shaft (1). The center of the bevel gears (23) that are perpendicular to the axis of the upper cutter shaft (2) or the lower cutter shaft (1) passes through the fixed supports (21) and is connected to a first adjusting screw (16) and a second adjusting screw (19).

6. The eccentric stripping mechanism for a precision strip slitting machine according to claim 5, characterized in that: Nuts (20) are provided at the connection points between the first adjusting screw (16) and the second adjusting screw (19) and the top of the fixed support (21). The first adjusting screw (16) and the second adjusting screw (19) are respectively screwed into the nuts (20) at the top of the corresponding fixed support (21).

7. The eccentric stripping mechanism for a precision strip slitting machine according to claim 5, characterized in that: When the fixed support (21) is set between the two support seats (13), the second inlet pressure roller (12) is rotatably connected to the outside of the transmission main shaft (24), and the first adjusting screw (16) and the second adjusting screw (19) are used to adjust the left and right positions of the second inlet pressure roller (12).

8. The eccentric stripping mechanism for a precision strip slitting machine according to claim 5, characterized in that: When the fixed support (21) is set between the long sides of the two columns, the outer side of the transmission main shaft (24) is rotatably connected to the second outlet pressure roller (11), and the first adjusting screw (16) and the second adjusting screw (19) are used to adjust the left and right positions of the second outlet pressure roller (11).

9. The eccentric stripping mechanism for a precision strip slitting machine according to claim 5, characterized in that: When the two sets of fixed supports (21) are set between the short sides of the two columns, the outer sides of the two transmission main shafts (24) are respectively rotatably connected to the first outlet pressure roller (9) and the first inlet pressure roller (10), and the two sets of first adjusting screws (16) and second adjusting screws (19) are respectively used to adjust the upper and lower positions of the first outlet pressure roller (9) and the first inlet pressure roller (10).

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