A blade replacement device for a slitting machine

Abstract

The utility model relates to the technical field of blade replacement devices for slitting machines, and discloses a blade replacement device for slitting machines, including an annular curved surface table, a plurality of grooves are provided on the annular curved surface table, curved surface push blocks are slidably connected to the inner sides of the plurality of grooves, one side of the plurality of curved surface push blocks are fixedly connected to rubber pads, a blade is fixedly connected to one side of the annular curved surface table, and a push block driving mechanism for making the plurality of curved surface push blocks approach the inner side at the same time is provided on one side of the annular curved surface table. Through the push block driving mechanism, the utility model enables the plurality of curved surface push blocks to be driven at the same time, thereby ensuring that the blade replacement device can form a highly symmetrical clamping and fixing effect on the knife shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of blade replacement devices for slitting machines, in particular to a blade replacement device for slitting machines. Background Art

[0002] A slitting machine is a machine that can cut paper, cloth, film and other materials into strips. It is widely used in textile, clothing, packaging, construction, printing and other industries. In actual production scenarios, slitting machines often need to select different types of slitting machines according to specific material types and cutting requirements. At this time, the staff needs to adjust the blade replacement device and then adjust the distance between the blades to achieve the effect of adjusting the cutting width of the material after slitting.

[0003] The popular blade replacement and fixing device design routes in the existing slitting machine market can be roughly divided into four categories: air expansion shaft type, separation ring separation fixing type, clamping ring slot clamp block type and internal nut bolt top fixing type. However, for the internal nut bolt top fixing type slitting machine blade replacement device, the following technical problems are generally encountered in actual production scenarios:

[0004] 1. When the blade replacement device is sleeved on the cutter shaft, the blade is fixed by tightening multiple symmetrically distributed nuts and abutting the inner ends of the nuts against the cutter shaft. However, when actually tightening the bolts, it is impossible to uniformly ensure that multiple bolts move inward at the same time and hold the same distance. This may cause the cutter shaft to not pass through the center point of the blade, resulting in unbalanced installation of the blade and the blade replacement device, and the blade may be damaged due to mechanical damage.

[0005] 2. For some high-speed rotating slitting machine blade shafts, the nuts and bolts are likely to loosen under the long-term centrifugal force and vibration caused by hard coils, resulting in unstable blade installation. This may cause large errors in the slitting width data system of the slitting machine and unqualified product quality.

[0006] In summary, a blade replacement device for a slitting machine is proposed that can solve the above problems. Utility Model Content

[0007] In order to solve the technical problem of installing a slitting machine blade, the utility model provides a slitting machine blade replacement device.

[0008] The utility model is implemented by the following technical scheme: a blade replacement device for a slitting machine, comprising an annular curved surface table, a plurality of grooves are opened on the annular curved surface table, a plurality of curved surface push blocks are slidably connected to the inner sides of the plurality of grooves, a plurality of curved surface push blocks are fixedly connected to one side with a rubber pad, a blade is fixedly connected to one side of the annular curved surface table, and a push block driving mechanism is arranged on one side of the annular curved surface table for making a plurality of curved surface push blocks approach the inner side at the same time.

[0009] As a further improvement of the above solution, the push block driving mechanism includes a threaded sleeve fixedly connected to the periphery of one side of the annular curved surface platform, and an abutment and pushing mechanism for abutting and pushing multiple curved surface push blocks simultaneously is provided on the inner side of the threaded sleeve.

[0010] As a further improvement of the above scheme, the abutment and pushing mechanism includes an inner curved external threaded sleeve connected to the inner threaded sleeve, the inner curved surface of the inner curved external threaded sleeve abuts against multiple curved push blocks at the same time, and the outer side of the threaded sleeve is provided with an anti-loosening mechanism to prevent the inner curved external threaded sleeve from loosening, and one end of the inner curved external threaded sleeve is provided with a driving auxiliary mechanism to facilitate screwing the inner curved external threaded sleeve into the threaded sleeve.

[0011] As a further improvement of the above-mentioned scheme, the anti-loosening mechanism includes a plurality of limiting holes opened on the threaded sleeve, a plurality of limiting holes are provided with a threaded hole on the inner side of one end of the outer threaded sleeve close to the inner curved surface, a plurality of threaded holes are connected to the inner threaded sleeves with threaded pins, and the other ends of the plurality of limiting holes are provided with a threaded pin driving mechanism for moving the threaded pin forward or backward along the direction of the threaded hole.

[0012] As a further improvement of the above scheme, the threaded pin driving mechanism includes square sockets opened on multiple threaded pins, the inner sides of the multiple square sockets are slidably connected with square rods, and one end of the multiple square rods is fixedly connected with a nut rotatably connected to the inner side of the limiting hole.

[0013] As a further improvement of the above solution, the auxiliary drive mechanism includes a cover plate fixedly connected to one end of the inner curved outer threaded sleeve, and the edge of the cover plate is provided with a plurality of slots for facilitating the rotation of the cover plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model uses a push block driving mechanism. When the inner curved surface external threaded sleeve enters the threaded sleeve through the threaded sleeve connection, the inner side of the inner curved surface external threaded sleeve can simultaneously produce an equidistant pushing effect on multiple curved surface push blocks with high pushing accuracy, so that multiple curved surface push blocks can be uniformly guaranteed to move inward at the same time and hold the same distance. After the curved surface push blocks are fixed to the cutter shaft, it can be guaranteed in geometric theory that the cutter shaft passes through the center position of the blade, thereby achieving a more balanced and stable installation of the slitting machine blade, and indirectly playing a role in protecting the safety of the blade structure.

[0016] 2. The utility model can effectively avoid the problem of loosening of the threaded sleeve and the inner curved outer threaded sleeve due to the high-speed rotation of the slitting machine's knife shaft, the centrifugal force of the blade itself and the vibration generated by cutting hard materials through the cooperation of the anti-loosening mechanism and the threaded pin driving mechanism, thereby solving a series of problems such as loose and unstable blade installation, large errors in the slitting width data of the slitting machine, and unqualified product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of an embodiment of a blade replacement device for a slitting machine provided by the utility model;

[0018] Figure 2 A front view of a blade replacement device for a slitting machine provided by the utility model;

[0019] Figure 3 for Figure 2 Side view of

[0020] Figure 4 It is an exploded schematic diagram of the structure of the utility model;

[0021] Figure 5 It is the first cross-sectional view of the utility model;

[0022] Figure 6 for Figure 5 Schematic diagram of the structure enlarged at point A in the middle.

[0023] Description of main symbols:

[0024] 1. Cutter shaft; 2. Blade; 3. Threaded sleeve; 4. Cover plate; 5. Internal curved external threaded sleeve; 6. Culvert; 7. Rubber pad; 8. Curved push block; 9. Square plug rod; 10. Square plug hole; 11. Threaded hole; 12. Limit hole; 13. Nut; 14. Threaded pin; 15. Annular curved table; 16. Slot. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0026] Example:

[0027] Please combine Figure 1, a blade replacement device for a slitting machine in this embodiment, four blades are arranged on a knife shaft, including an annular curved table 15, four culverts 6 are opened on the annular curved table 15, the inner sides of the four culverts 6 are slidably connected with curved surface push blocks 8, one side of the four curved surface push blocks 8 are fixedly connected with rubber pads 7, the rubber pads 7 are made of industrial-grade composite rubber to improve friction and wear resistance, one side of the annular curved table 15 is fixedly connected with a blade 2, the blade 2 is an annular structure, and one side of the annular curved table 15 is provided with a push block driving mechanism for making multiple curved surface push blocks 8 approach the inside at the same time.

[0028] Please combine Figure 4 and Figure 5 As shown, the push block driving mechanism includes a threaded sleeve 3 fixedly connected to the periphery of one side of the annular curved surface platform 15. The threaded sleeve 3 is located on the periphery of the annular curved surface platform 15 and is located in the same horizontal plane. The inner side of the threaded sleeve 3 is provided with an abutment and pushing mechanism for simultaneously abutting and pushing the four curved surface push blocks 8. The four curved surface push blocks 8 are symmetrically distributed.

[0029] Please combine Figure 5 and Figure 6 As shown, the abutment and pushing mechanism includes an inner curved external threaded sleeve 5 which is sleeved with the inner thread of the threaded sleeve 3, and the inner curved surface of the inner curved external threaded sleeve 5 abuts against four curved surface push blocks 8 at the same time. It should be noted that the curved surface of the inner curved external threaded sleeve 5 is completely matched with the curved surface of the curved surface push blocks 8, and an anti-loosening mechanism is provided on the outer side of the threaded sleeve 3 to prevent the inner curved external threaded sleeve 5 from loosening, and one end of the inner curved external threaded sleeve 5 is provided with a driving auxiliary mechanism for facilitating screwing the inner curved external threaded sleeve 5 into the threaded sleeve 3.

[0030] Please combine Figure 5 As shown, the anti-loosening mechanism includes four limiting holes 12 opened on the threaded sleeve 3, and a threaded hole 11 is provided on the inner side of one end of the four limiting holes 12 close to the inner curved surface of the external threaded sleeve 5. It should be particularly noted that the limiting holes 12 and the threaded holes 11 are in a connected state, and the inner threaded sleeves of the four threaded holes 11 are connected with threaded pins 14, and the other ends of the four limiting holes 12 are provided with threaded pin driving mechanisms for making the threaded pins 14 move forward or backward along the direction of the threaded holes 11.

[0031] Please combine Figure 4 As shown, the threaded pin driving mechanism includes square sockets 10 opened on four threaded pins 14, the inner sides of the four square sockets 10 are slidably connected with square plug rods 9, and one ends of the four square plug rods 9 are fixedly connected with nuts 13 rotatably connected to the inner sides of the limiting holes 12. It should be noted that the sizes of the square sockets 10 and the square plug rods 9 here are completely matched with each other for plugging, and non-circular sockets can be used in embodiments in other actual scenarios.

[0032] Please combine Figure 4As shown, the auxiliary driving mechanism includes a cover plate 4 fixedly connected to one end of an inner curved outer threaded sleeve 5, and a plurality of slots 16 are provided on the edge of the cover plate 4 for driving the cover plate 4 to rotate.

[0033] The implementation principle of a blade replacement device for a slitting machine in the embodiment of the present application is as follows: the staff passes the knife shaft through the inner center of the annular curved table 15, and then puts the cover plate 4 into the knife shaft and abuts against one side of the annular curved table 15, and rotates through the slot 16 to thread the inner curved surface external threaded sleeve 5 into the threaded sleeve 3. At this time, due to the pushing effect of the inner curved surface external threaded sleeve 5 on the multiple curved surface pushing blocks 8, the multiple curved surface pushing blocks 8 can move forward in the direction of the culvert 6 at the same time until the multiple rubber pads 7 form an abutment state with the knife shaft together. At this time, by turning the nut 13 to rotate, the square plug rod 9 is driven to rotate, and under the limiting effect of the square plug hole 10, the threaded pin 14 is indirectly driven to rotate, and under the limiting effect of the threaded hole 11 on the threaded pin 14, the threaded pin 14 moves along the threaded hole 11 until it abuts against the outer side of the inner curved surface external threaded sleeve 5, thereby preventing the inner curved surface external threaded sleeve 5 from loosening in the threaded sleeve 3 and achieving the effect of fixing the blade.

[0034] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A blade replacement device for a slitting machine, comprising an annular curved surface table (15), characterized in that: The annular curved surface platform (15) is provided with a plurality of grooves (6), the inner sides of the plurality of grooves (6) are slidably connected with curved surface push blocks (8), one side of the plurality of curved surface push blocks (8) are fixedly connected with a rubber pad (7), one side of the annular curved surface platform (15) is fixedly connected with a blade (2), and one side of the annular curved surface platform (15) is provided with a push block driving mechanism for causing the plurality of curved surface push blocks (8) to move toward the inner side simultaneously.

2. A blade replacement device for a slitting machine according to claim 1, characterized in that: The push block driving mechanism comprises a threaded sleeve (3) fixedly connected to the periphery of one side of the annular curved surface platform (15), and an abutment and pushing mechanism for abutting and pushing a plurality of curved surface push blocks (8) simultaneously is arranged on the inner side of the threaded sleeve (3).

3. A blade replacement device for a slitting machine as claimed in claim 2, characterized in that: The abutting and pushing mechanism comprises an inner curved external threaded sleeve (5) which is threadedly sleeved with the inner side of the threaded sleeve (3); the inner curved surface of the inner curved external threaded sleeve (5) abuts against a plurality of curved push blocks (8) at the same time; an anti-loosening mechanism for preventing the inner curved external threaded sleeve (5) from loosening is arranged on the outer side of the threaded sleeve (3); and a driving auxiliary mechanism for facilitating screwing the inner curved external threaded sleeve (5) into the threaded sleeve (3) is arranged at one end of the inner curved external threaded sleeve (5).

4. A blade replacement device for a slitting machine as claimed in claim 3, characterized in that: The anti-loosening mechanism comprises a plurality of limiting holes (12) formed on the threaded sleeve (3); a threaded hole (11) is provided on the inner side of one end of the plurality of limiting holes (12) close to the inner curved surface of the external threaded sleeve (5); a threaded pin (14) is connected to the inner threaded sleeve of the plurality of threaded holes (11); and a threaded pin driving mechanism for moving the threaded pin (14) forward or backward along the direction of the threaded hole (11) is provided on the other end of the plurality of limiting holes (12).

5. A blade replacement device for a slitting machine as claimed in claim 4, characterized in that: The threaded pin driving mechanism comprises square sockets (10) each provided on a plurality of threaded pins (14), the inner sides of the plurality of square sockets (10) each being slidably connected to a square plug rod (9), and one end of the plurality of square plug rods (9) each being fixedly connected to a nut (13) rotatably connected to the inner side of a limiting hole (12).

6. A blade replacement device for a slitting machine as claimed in claim 3, characterized in that: The auxiliary driving mechanism comprises a cover plate (4) fixedly connected to one end of an inner curved outer thread sleeve (5), and a plurality of slots (16) are provided on the edge of the cover plate (4) for facilitating the rotation of the cover plate (4).

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