Slitting machine capable of eccentrically adjusting cutter gap

Abstract

The slitting machine comprises a base, a fixed memorial archway, a movable memorial archway, an upper cutter shaft, a lower cutter shaft and a driving mechanism, the fixed archway is fixed on one side of the base, the fixed archway is provided with an upper fixed eccentric gear sleeve and a lower fixed eccentric gear sleeve, the upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve are provided with meshed gears and eccentric inner holes for installing the upper cutter shaft and the lower cutter shaft, and the upper cutter shaft and the lower cutter shaft are provided with blades; the movable archway is arranged on the other side of the base, an upper movable eccentric gear sleeve and a lower movable eccentric gear sleeve are installed on the movable archway, the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve are provided with meshed gears and are provided with eccentric inner holes which are arranged at the other ends of the upper cutter shaft and the lower cutter shaft in a sleeved mode, and the lower fixed eccentric gear sleeve and the lower movable eccentric gear sleeve are both connected with a driving mechanism. According to the utility model, the high-precision and high-quality slitting effect can be achieved.

Description

Technical Field

[0001] The utility model relates to a device for adjusting the knife arrangement gap on a slitting machine, belonging to the technical field of knife arrangement gap adjustment of slitting machines. Background Technique

[0002] After the steel coil is unrolled, it is sheared and slit by a slitting machine. At present, the steel plates on the market are getting thinner and the number of slits is increasing. To ensure the slitting quality, the requirements for the knife arrangement gap are getting stricter, with gaps and variations in the micron range, approaching zero gap and zero deviation knife arrangement. At this time, the requirements for the strength and deformation of the slitting machine are getting stricter. During the shearing process, deformation should be minimized as much as possible, and the deviation problem between the gap without material and the gap with material should be solved. The above problems can be improved by strengthening the strength of the machine frame and the knife shaft and improving the accuracy of the blades and spacers.

[0003] However, for existing slitting machines in the traditional mode, such as Figure 2 shown, after the above improvements are made, the following problems still exist:

[0004] Problem 1:

[0005] After being stressed, the upper knife shaft is supported by the hoist screw. Its diameter is small and the length-diameter ratio of the protruding part is too large, resulting in weakened rigidity. When the knife shaft bends or gives way, it cannot provide strong support.

[0006] Problem 2:

[0007] The support point of the screw is far from the force point of the knife shaft slider. Due to the lever effect, the force on the screw increases, further weakening its supporting rigidity.

[0008] Problem 3:

[0009] The gap between the hoist screw and the nut is too large. After adjusting the upper and lower gap of the knife, whether it is stressed or locked in advance, the upper knife will move up and down, affecting the upper and lower gap of the knife, and it is impossible to ensure that the adjusted gap is the gap required during shearing, affecting the surface quality of the steel plate.

[0010] Problem 4:

[0011] When the upper knife shaft slider moves up and down, there are gaps in all directions of front, back, left and right. When the knife shaft is shearing and stressed, it will give way or move around, affecting the size of the left and right gap of the knife, thus affecting the slitting quality and even causing interference between the blades and damaging the blades.

[0012] Existing traditional slitting machines are basically helpless in solving the above problems. To solve the above problems, the structure must be changed to avoid the above problems and maximize the accuracy of the equipment. Summary of the Invention

[0013] The utility model aims at the deficiencies of the existing slitting machines, and provides a slitting machine with eccentric adjustment of knife clearance, which has higher strength and higher precision and can achieve high-precision and high-quality slitting.

[0014] The slitting machine with eccentric adjustment of knife clearance of the utility model adopts the following technical solutions:

[0015] The slitting machine includes a base, a fixed housing, a movable housing, an upper knife shaft, a lower knife shaft and a driving mechanism;

[0016] The fixed housing is fixed on one side of the base. An upper fixed eccentric gear sleeve and a lower fixed eccentric gear sleeve are installed on the fixed housing. Gears are arranged on both the upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve and are provided with eccentric inner holes (the center lines of the gears and the inner holes are inconsistent, forming an eccentric structure). The gears on the upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve are meshed. One ends of the upper knife shaft and the lower knife shaft are respectively installed in the eccentric inner holes of the upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve. Upper blades are installed on the upper knife shaft, and lower blades are installed on the lower knife shaft;

[0017] The movable housing is arranged on the other side of the base through slide rails. An upper movable eccentric gear sleeve and a lower movable eccentric gear sleeve are installed on the movable housing. Gears are arranged on both the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve and are provided with eccentric inner holes. The gears on the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve are meshed. The other ends of the upper knife shaft and the lower knife shaft are respectively sleeved in the eccentric inner holes of the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve;

[0018] Both the lower fixed eccentric gear sleeve and the lower movable eccentric gear sleeve are connected with the driving mechanism.

[0019] The eccentric inner holes on the upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve are symmetrical. The eccentric inner holes on the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve are symmetrical.

[0020] The shaft end of the upper knife shaft is locked and fixed with the upper fixed eccentric gear sleeve through a nut. The shaft end of the lower knife shaft is locked and fixed with the lower fixed eccentric gear sleeve through a nut.

[0021] The eccentric inner hole of the upper movable eccentric gear sleeve is concentric with the eccentric inner hole of the upper fixed eccentric gear sleeve, and the eccentric inner hole of the lower movable eccentric gear sleeve is concentric with the eccentric inner hole of the lower fixed eccentric gear sleeve. This can ensure the synchronous movement of both ends of the upper knife shaft and the lower knife shaft.

[0022] The driving mechanism includes a reduction motor, a transmission shaft, and driving gears. The reduction motor is installed on the base. The transmission shaft is a telescopic shaft, with the fixed section installed on the fixed housing and the telescopic section installed on the movable housing. The fixed section is connected to the rotating shaft of the reduction motor. Driving gears are installed on both the fixed section and the telescopic section, and the two driving gears are respectively meshed with the gears on the lower fixed eccentric gear sleeve and the lower movable eccentric gear sleeve. This ensures that the driving gears can still rotate synchronously when the movable housing moves.

[0023] The movable housing is connected to a moving mechanism, which includes a reduction motor, a lead screw, and a nut. The reduction motor is fixedly installed on the base. The lead screw is installed on the base and one end thereof is connected to the rotating shaft of the reduction motor. The nut is arranged on the movable housing and connected to the lead screw. The reduction motor drives the movable housing to move on the base through the lead screw.

[0024] The fixed housing is provided with a positioning block for the upper fixed eccentric gear sleeve and a positioning block for the lower fixed eccentric gear sleeve. The movable housing is provided with a positioning block for the upper movable eccentric gear sleeve and a positioning block for the lower movable eccentric gear sleeve. This can prevent the eccentric gear sleeves from rotating when subjected to shearing force after the knife gap is adjusted, thus affecting the shearing accuracy.

[0025] Move the movable housing so that the upper knife shaft and the lower knife shaft are respectively placed in the inner holes of the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve. The gear transmission of the driving mechanism drives the lower fixed eccentric gear sleeve and the lower movable eccentric gear sleeve to rotate simultaneously. The upper movable eccentric gear sleeve rotates synchronously with the upper fixed eccentric gear sleeve, and the lower knife shaft and the upper knife shaft rotate synchronously therewith. The distance between the upper knife shaft and the lower knife shaft is changed through the eccentric inner hole, and the distance between the upper blade and the lower blade is changed simultaneously, achieving the purpose of adjusting the knife gap.

[0026] The above-mentioned slitting machine locks both the upper and lower knife shafts completely on the fixed housing, preventing relative movement between the knife shafts and keeping the left and right clearances of the blades always consistent, solving the problem 4 mentioned in the background art; the fixed housing and the movable housing are in direct contact with the knife shafts without gaps or transition links, providing the maximum support for the knife shafts and avoiding the problems 1 and 2 mentioned in the background art; the fixed housing and the movable housing are in direct contact with the knife shafts without gaps or transition links. After adjusting the upper and lower clearances of the blades, the relative distance between the upper and lower knife shafts will not change, solving the problem 3 mentioned in the background art.

[0027] Compared with the existing slitting machines, the present utility model can provide higher strength and achieve higher precision. In the face of ultra-thin plates and processing of a large number of strips, it can more effectively solve various existing problems and achieve a high-precision and high-quality slitting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural view of the slitting machine with eccentric knife gap adjustment of the present utility model.

[0029] Figure 2 It is a structural schematic diagram of the positioning block in the utility model.

[0030] Among them: 1. Fixed archway, 2. Upper fixed eccentric gear sleeve, 3. Transmission shaft, 4. Upper blade, 5. Upper knife shaft. 6. Lower knife shaft, 7. Movable archway, 8. Upper movable eccentric gear sleeve, 9. Lower movable eccentric gear sleeve, 10. Speed ​​reduction motor, 11. Positioning block, 12. Speed ​​reduction motor, 13. Base, 14. Driving gear, 15. Lower fixed eccentric gear sleeve, 16. Lower blade, 17. Driving gear, 18 Lead screw, 19. Nut. DETAILED DESCRIPTION

[0031] like Figure 1 As shown, the utility model Figure 1 As shown, a knife gap adjustment device includes a base 13, a fixed arch 1, a movable arch 7 and a driving mechanism.

[0032] The fixed archway 1 is fixed on one side of the base 13, and an upper fixed eccentric gear sleeve 2 and a lower fixed eccentric gear sleeve 15 are provided on the fixed archway 1. The upper fixed eccentric gear sleeve 2 and the lower fixed eccentric gear sleeve 15 are both installed on the fixed archway 1 through bearings and can rotate around their respective axes; the upper fixed eccentric gear sleeve 2 and the lower fixed eccentric gear sleeve 15 are gear shaft structures, the ends of which are gears, and are provided with inner holes eccentric to the gears (the center line of the inner hole is inconsistent with the center line of the gear). The upper fixed eccentric gear sleeve 2 is meshed with the gears on the lower fixed eccentric gear sleeve 15, and the eccentric inner holes on the upper fixed eccentric gear sleeve 2 and the lower fixed eccentric gear sleeve 15 are symmetrical. One end of the upper cutter shaft 5 is installed in the eccentric inner hole of the upper fixed eccentric gear sleeve 2 through a bearing, and the shaft end is locked and fixed with the upper fixed eccentric gear sleeve 2 through a nut. One end of the lower cutter shaft 6 is installed in the eccentric inner hole of the lower fixed eccentric gear sleeve 15 through a bearing, and the shaft end is locked and fixed with the lower fixed eccentric gear sleeve 15 through a nut. The upper blade 4 is installed on the upper blade shaft 5 , and the lower blade 16 is installed on the lower blade shaft 6 .

[0033] The movable archway 7 is arranged on the other side of the base 13 through a slide rail, and the slide rail is fixed on the base 13. The movable archway 7 is installed on the slide rail and can move along the slide rail. The upper movable eccentric gear sleeve 8 and the lower movable eccentric gear sleeve 9 are installed on the movable archway 7 through bearings, and the upper movable eccentric gear sleeve 8 and the lower movable eccentric gear sleeve 9 can rotate around their respective axes. The upper movable eccentric gear sleeve 8 and the lower movable eccentric gear sleeve 9 are gear shaft structures, and their ends are gears, and are provided with inner holes eccentric to the gears (the center line of the inner hole is inconsistent with the center line of the gear). The gears on the upper movable eccentric gear sleeve 8 and the lower movable eccentric gear sleeve 9 are meshed, and the eccentric inner holes on the upper movable eccentric gear sleeve 8 and the lower movable eccentric gear sleeve 9 are symmetrical. That is, the structure and installation method of the upper movable eccentric gear sleeve 8 and the lower movable eccentric gear sleeve 9 are consistent with the structure and installation method of the upper fixed eccentric gear sleeve 2 and the lower fixed eccentric gear sleeve 15. The other end of the upper blade shaft 5 is sleeved in the eccentric inner hole of the upper movable eccentric gear sleeve 8, and the other end of the lower blade shaft 6 is sleeved in the eccentric inner hole of the lower movable eccentric gear sleeve 9. The eccentric inner hole of the upper movable eccentric gear sleeve 8 is concentric with the eccentric inner hole of the upper fixed eccentric gear sleeve 2, and the eccentric inner hole of the lower movable eccentric gear sleeve 9 is concentric with the eccentric inner hole of the lower fixed eccentric gear sleeve 15, ensuring that the two ends of the upper blade shaft 5 and the lower blade shaft 6 move synchronously. The upper blade shaft 5 and the lower blade shaft 6 can be disengaged from the upper movable eccentric gear sleeve 8 and the lower movable eccentric gear sleeve 9. The movable archway 7 can move left and right along the base 13. When closed, it provides end support for the upper blade shaft 5 and the lower blade shaft 6 for shearing steel plates; when separated, it is separated from the shaft heads of the upper blade shaft 5 and the lower blade shaft 6 to make room for installing and removing the upper blade 4, the lower blade 16 and the spacer between the blades.

[0034] The driving mechanism includes a reduction motor 12, a transmission shaft 3 and a driving gear. The reduction motor 12 is mounted on a base 13. The transmission shaft 3 is a telescopic shaft. The fixed section is mounted on the fixed arch 1 through a bearing, and the telescopic section is mounted on the movable arch 7 through a bearing. The fixed section is connected to the rotating shaft of the reduction motor 12 ( Figure 1 The fixed section and the telescopic section are respectively provided with a driving gear 14 and a driving gear 17. The driving gear 14 meshes with the end gear of the lower fixed eccentric gear sleeve 15, and the driving gear 17 meshes with the end gear of the lower movable eccentric gear sleeve 9, ensuring that the driving gear 14 and the driving gear 17 can still rotate synchronously when the movable arch 7 moves.

[0035] The reduction motor 12 drives the driving gear 14 and the driving gear 17 to rotate synchronously through the transmission shaft 3. The driving gear 14 and the driving gear 17 then simultaneously drive the lower fixed eccentric gear sleeve 15 and the lower movable eccentric gear sleeve 9 to rotate, the upper movable eccentric gear sleeve 2 rotates synchronously with the upper fixed eccentric gear sleeve 8, and the lower knife shaft 6 and the upper knife shaft 5 rotate synchronously therewith. The distance between the upper knife shaft 5 and the lower knife shaft 6 is changed by the eccentric inner hole, and the spacing between the upper blade 4 and the lower blade 16 changes accordingly, thereby achieving the purpose of adjusting the knife gap.

[0036] The movable archway 7 is connected to a moving mechanism arranged on the base 13, which adopts a screw-nut pair moving mechanism, including a reduction motor 10, a screw 18 and a nut 19. The reduction motor 10 is fixedly mounted on the base 13, and both ends of the screw 18 are mounted on the base 13 through bearings, and one end is connected to the rotating shaft of the reduction motor 10. The nut 19 is arranged on the movable archway 7 and is threadedly connected to the screw. The reduction motor 10 drives the movable archway 7 to move through the screw 18 and the nut 19.

[0037] See also Figure 2 A positioning block 11 is installed on the fixed arch 1 and the movable arch 7. After the gap between the upper blade 4 and the lower blade 16 is adjusted into place, the positioning block 11 supports the upper fixed eccentric gear sleeve 2, the upper movable eccentric gear sleeve 8, the lower movable eccentric gear sleeve 9, and the lower fixed eccentric gear sleeve 15 to prevent them from rotating when the shear force is applied, thereby affecting the shearing accuracy.

[0038] After the knife gap between the upper blade 4 and the lower blade 16 is adjusted, the shearing process of the steel plate is the same as that of the existing slitting machine.

Claims

1. A slitting machine with eccentrically adjusted knife gap, characterized by: It includes a base, a fixed archway, a movable archway, an upper knife shaft, a lower knife shaft and a driving mechanism; The fixed archway is fixed on one side of the base, and an upper fixed eccentric gear sleeve and a lower fixed eccentric gear sleeve are installed on the fixed archway. The upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve are both provided with gears and have eccentric inner holes. The upper fixed eccentric gear sleeve is meshed with the gears on the lower fixed eccentric gear sleeve. One end of the upper cutter shaft and the lower cutter shaft are respectively installed in the eccentric inner holes of the upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve. An upper blade is installed on the upper cutter shaft, and a lower blade is installed on the lower cutter shaft. The movable archway is arranged on the other side of the base through a slide rail, and an upper movable eccentric gear sleeve and a lower movable eccentric gear sleeve are installed on the movable archway. The upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve are both provided with gears and have eccentric inner holes. The gears on the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve are meshed, and the other ends of the upper knife shaft and the lower knife shaft are respectively sleeved in the eccentric inner holes of the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve; The lower fixed eccentric gear sleeve and the lower movable eccentric gear sleeve are both connected with the driving mechanism.

2. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The eccentric inner holes on the upper fixed eccentric gear sleeve and the lower fixed eccentric gear sleeve are symmetrical.

3. The slitting machine with eccentrically adjusted blade gap according to claim 1 is characterized in that: The eccentric inner holes on the upper movable eccentric gear sleeve and the lower movable eccentric gear sleeve are symmetrical.

4. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The shaft end of the upper cutter shaft is locked and fixed with the upper fixed eccentric gear sleeve through a nut.

5. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The shaft end of the lower cutter shaft is locked and fixed with the lower fixed eccentric gear sleeve through a nut.

6. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The eccentric inner hole of the upper movable eccentric gear sleeve is concentric with the eccentric inner hole of the upper fixed eccentric gear sleeve.

7. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The eccentric inner hole of the lower movable eccentric gear sleeve is concentric with the eccentric inner hole of the lower fixed eccentric gear sleeve.

8. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The driving mechanism includes a reduction motor, a transmission shaft and a driving gear. The reduction motor is installed on a base. The transmission shaft is a telescopic shaft. The fixed section is installed on a fixed archway, and the telescopic section is installed on a movable archway. The fixed section is connected to the rotating shaft of the reduction motor. Both the fixed section and the telescopic section are installed with driving gears. The two driving gears are respectively meshed with gears on a lower fixed eccentric gear sleeve and a lower movable eccentric gear sleeve.

9. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The movable archway is connected to a moving mechanism, which includes a reduction motor, a screw rod and a nut. The reduction motor is fixedly mounted on a base, the screw rod is mounted on the base and one end of the screw rod is connected to a rotating shaft of the reduction motor, and the nut is arranged on the movable archway and connected to the screw rod.

10. The slitting machine with eccentrically adjusted blade gap according to claim 1, characterized in that: The fixed archway is provided with a positioning block for an upper fixed eccentric gear sleeve and a positioning block for a lower fixed eccentric gear sleeve; the movable archway is provided with a positioning block for an upper movable eccentric gear sleeve and a positioning block for a lower movable eccentric gear sleeve.

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