Film slitting device

Abstract

The utility model discloses a film slitting device which comprises a machine frame, an unwinding roller and a winding roller are arranged on the machine frame, a slitting roller is arranged between the unwinding roller and the winding roller and comprises a main shaft, a movable blade is installed on the main shaft, a first limiting piece is installed on one side of the blade, and a second limiting piece is installed on the other side of the blade. A second limiting piece detachably connected with the first limiting piece is installed on the other side of the blade, the first limiting piece comprises a first limiting ring, the first limiting ring comprises two semi-rings, the two semi-rings are connected and fixed to the main shaft so as to limit the blade to move along the main shaft, and the second limiting piece limits radial movement of the blade when fixed to the first limiting piece. The blades are fixed to the main shaft through the first limiting piece and the second limiting piece, the first limiting piece can move in the length direction of the main shaft so that the distance between the blades can be conveniently adjusted, the first limiting piece is composed of the two semi-rings which are connected through the fastening piece, the overall structure is simple, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of film production equipment, and more specifically, to a film slitting device. Background Art

[0002] After film production is complete, it needs to be cut to meet the required width. To accommodate the cutting requirements of films of different widths, the distance between the blades of existing slitting equipment can be adjusted. However, the movement of the blades is often driven by devices such as screws and motors, which makes the overall structure relatively complex and expensive. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a film slitting device with a simple structure.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a film slitting device, comprising a frame, the frame is provided with a unwinding roller and a winding roller, a slitting roller is arranged between the unwinding roller and the winding roller, the slitting roller comprises a main shaft, the main shaft is equipped with a movable blade, a first limiting member is installed on one side of the blade, and a second limiting member detachably connected to the first limiting member is installed on the other side of the blade, the first limiting member comprises a first limiting ring, the first limiting ring comprises two half rings, the two half rings are connected and fixed to the main shaft to limit the movement of the blade along the main shaft, and the second limiting member limits the radial movement of the blade when fixed to the first limiting member.

[0005] Furthermore, the surface of the main shaft is provided with a positioning groove extending along the length direction of the main shaft, and the half ring is provided with a positioning block embedded in the positioning groove. The two half rings are fixed by fasteners to fix the first limiting ring to the main shaft.

[0006] Furthermore, an elastic strip is installed at the bottom of the positioning groove, and the positioning block squeezes the elastic strip when the first limiting member is fixed to the main shaft.

[0007] Furthermore, the second limiting member includes a second limiting ring, which is sleeved on the main shaft, the blade is provided with a first positioning hole, the second limiting ring is provided with a second positioning hole, the first limiting ring is provided with a first positioning bolt passing through the first positioning hole and the second positioning hole, and the part of the first positioning bolt extending out of the second limiting member is connected with a nut to fix the first limiting ring, the blade and the second limiting ring.

[0008] Furthermore, the blade is provided with a third positioning hole, the first limiting ring is provided with a fourth positioning hole, the second limiting ring is provided with a second positioning bolt passing through the third positioning hole and the fourth positioning hole, and the part of the second positioning bolt extending out of the first limiting ring is connected with a nut to fix the first limiting ring, the blade and the second limiting ring.

[0009] Furthermore, the diameters of the first positioning hole and the second positioning hole are larger than the diameter of the first positioning bolt, and the diameters of the third positioning hole and the fourth positioning hole are larger than the diameter of the second positioning bolt.

[0010] In summary, the present invention has the following beneficial effects:

[0011] The blades are fixed on the main shaft by the first limiting member and the second limiting member. The first limiting member can move along the length direction of the main shaft to facilitate adjustment of the distance between the blades. The first limiting member is composed of two half rings and is connected by fasteners. The overall structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 Schematic diagram of the structure of the slitting roller;

[0014] Figure 3 It is a cross-sectional view of the circumference of the slitting roller;

[0015] Figure 4 It is a cross-sectional view of the slitting roller in the axial direction;

[0016] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0017] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0018] Figure markings: frame 100, unwinding roller 110, winding roller 120, slitting roller 200, main shaft 210, positioning groove 211, elastic strip 212, blade 300, first positioning hole 301, third positioning hole 302, first limiting ring 400, fourth positioning hole 401, half ring 410, positioning block 411, fastener 420, first positioning bolt 430, second limiting ring 500, second positioning hole 501, second positioning bolt 510. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See Figures 1 to 6 A film slitting device includes a frame 100, on which are mounted an unwinding roller 110 and a winding roller 120. The winding roller 120 includes an upper winding roller 120 located at the upper side and a lower winding roller 120 located at the lower side. A slitting roller 200 is disposed between the unwinding roller 110 and the winding roller 120. The film is slit by the slitting roller 200 starting from the unwinding roller 110 and then divided into two parts. One part is wound by a first winding roller, and the other part is wound by a second winding roller 120.

[0021] The staging roller includes a main shaft 210, on which a blade 300 is mounted. A first stopper is mounted on one side of the blade 300, and a second stopper is mounted on the other side of the blade 300. The blade 300 is sleeved on the main shaft 210 so that the blade 300 can move along the main shaft 210. The first stopper and the second stopper restrict the blade 300 from moving along the main shaft 210 and also restrict the blade 300 from moving radially, thereby fixing the position of the blade 300.

[0022] The first limiting member includes a first limiting ring 400, which is composed of two half rings 410. A positioning block 411 is provided on the half ring 410. At the same time, two positioning grooves 211 extending along the length direction of the main shaft 210 are provided on the surface of the main shaft 210. An elastic strip 212 is installed at the bottom of the positioning groove 211. The elastic strip 212 is made of rubber. The positioning blocks 411 of the two half rings 410 are respectively embedded in the two positioning grooves 211. The two half rings 410 are connected and fixed by fasteners 420, so that the positioning blocks 411 are completely embedded in the positioning groove 211. At the same time, the positioning blocks 411 also squeeze the elastic strip 212, thereby strengthening the friction between the positioning blocks 411 and the positioning groove 211, so that the first limiting ring 400 can be fixed on the main shaft 210 and can rotate with the rotation of the main shaft 210. The blade 300 is fixed on the first limiting ring 400 through the second limiting member, so that the blade 300 can rotate. The first limiting ring 400 can be moved by disassembling and assembling the fastener, thereby enabling the blades 300 to move to adjust the distance between the blades 300.

[0023] The second limiting member includes a second limiting ring 500, which is sleeved on the ball spindle 210. The blade 300 is provided with a first positioning hole 301, and the second limiting ring 500 is provided with a second limiting hole corresponding to the first limiting hole. At the same time, the first limiting ring 400 is provided with a first positioning bolt 430 that passes through the first positioning hole 301 and the second positioning hole 501. The end of the first positioning bolt 430 is mounted with a nut, which fixes the first limiting ring 400, the blade 300, and the second limiting ring 500 together.

[0024] The blade 300 is provided with a third positioning hole 302, and the first retaining ring 400 is provided with a fourth positioning hole 401. The third positioning hole 302 corresponds to the fourth positioning hole 401. The second retaining ring 500 is provided with a second positioning bolt 510 that passes through the third positioning hole 302 and the fourth positioning hole 401. A nut is mounted on the end of the second positioning bolt 510, which secures the first retaining ring 400, the blade 300, and the second retaining ring 500. The first positioning bolt 430 and the second positioning bolt 510 together lock the blade 300, preventing the blade 300 from falling and ensuring the stable fixation of the blade 300.

[0025] The diameters of the first positioning hole 301 and the second positioning hole 501 are larger than the diameter of the first positioning bolt 430, and the diameters of the third positioning hole 302 and the fourth positioning hole 401 are larger than the diameter of the second positioning bolt 510. When the fastener 420 between the two half-rings 410 is removed, the two half-rings 410 separate under the action of the elastic strip 212. The larger diameters provide space for the first positioning bolt 430 and the second positioning bolt 510 to move, thereby preventing the positioning block 411 from getting stuck in the positioning groove 211 and allowing the first limiting ring 400 to move, thereby adjusting the distance between the blades 300.

[0026] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A film slitting device, characterized in that: The invention comprises a frame (100), wherein the frame (100) is provided with a reeling roller (110) and a reeling roller (120), a slitting roller (200) is provided between the reeling roller (110) and the reeling roller (120), the slitting roller (200) comprises a main shaft (210), the main shaft (210) is provided with a movable blade (300), a first limiting member is provided on one side of the blade (300), and a second limiting member detachably connected to the first limiting member is provided on the other side of the blade (300), the first limiting member comprises a first limiting ring (400), the first limiting ring (400) comprises two half rings (410), the two half rings (410) are connected and fixed to the main shaft (210) to limit the blade (300) from moving along the main shaft (210), and the second limiting member limits the blade (300) from moving radially when fixed to the first limiting member.

2. A film slitting device according to claim 1, characterized in that: The surface of the main shaft (210) is provided with a positioning groove (211) extending along the length direction of the main shaft (210), and the half ring (410) is provided with a positioning block (411) embedded in the positioning groove (211). The two half rings (410) are fixed by a fastener (420) to fix the first limiting ring (400) to the main shaft (210).

3. A film slitting device according to claim 2, characterized in that: An elastic strip (212) is installed at the bottom of the positioning groove (211), and the positioning block (411) presses the elastic strip (212) when the first limiting member is fixed to the main shaft (210).

4. The film slitting device according to claim 1, characterized in that: The second limiting member includes a second limiting ring (500), the second limiting ring (500) is sleeved on the main shaft (210), the blade (300) is provided with a first positioning hole (301), the second limiting ring (500) is provided with a second positioning hole (501), the first limiting ring (400) is provided with a first positioning bolt (430) passing through the first positioning hole (301) and the second positioning hole (501), and the part of the first positioning bolt (430) extending out of the second limiting member is connected with a nut to fix the first limiting ring (400), the blade (300) and the second limiting ring (500).

5. The film slitting device according to claim 4, characterized in that: The blade (300) is provided with a third positioning hole (302), the first limiting ring (400) is provided with a fourth positioning hole (401), the second limiting ring (500) is provided with a second positioning bolt (510) passing through the third positioning hole (302) and the fourth positioning hole (401), and the portion of the second positioning bolt (510) extending out of the first limiting ring (400) is connected with a nut to fix the first limiting ring (400), the blade (300) and the second limiting ring (500).

6. The film slitting device according to claim 5, characterized in that: The diameters of the first positioning hole (301) and the second positioning hole (501) are larger than the diameter of the first positioning bolt (430), and the diameters of the third positioning hole (302) and the fourth positioning hole (401) are larger than the diameter of the second positioning bolt (510).

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