Rotary type sample cutting machine for BOPP film processing

Abstract

The utility model belongs to the technical field of BOPP (biaxially-oriented polypropylene) film processing, and particularly relates to a rotary sample cutting machine for BOPP film processing, which comprises a workbench, the top surface of the workbench is rotatably connected with a mounting column, a BOPP film is limited and fixed on the arc surfaces of a plurality of sample cutting blocks through a limiting component, and then a stepping motor is used for driving the mounting column to rotate, so that the BOPP film is cut into a plurality of sample cutting blocks; at the moment, a plurality of first mounting blocks and mounting shells rotate along with the first mounting blocks and the mounting shells, then a slitting knife roller cuts a BOPP film on the surface of a sample cutting block, in the process, the surface, making contact with the sample cutting block, of the slitting knife roller is extruded by the sample cutting block to move, and at the moment, resilience force of a second spring reversely pushes a second connecting rod, the mounting shells and the slitting knife roller to move; according to the BOPP film sample cutting device, the slitting knife roll is arranged on the surface of the sample cutting block, so that the slitting knife roll is always attached to the surface of the sample cutting block, the completeness of BOPP film sample cutting by the slitting knife roll is guaranteed, a worker can fix different BOPP films on the surface of the sample cutting block for sample cutting, and the effect that multiple different BOPP films can be conveniently cut is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of BOPP film processing, in particular to a rotary sample cutter for BOPP film processing. Background Art

[0002] BOPP film is a plastic film made by co-extruding polypropylene particles into a sheet and then stretching it in the vertical and horizontal directions. BOPP film not only has the advantages of high tensile strength, good barrier properties, high transparency, etc., but also has a simple manufacturing process and a reasonable price. Therefore, it is widely used in the packaging of food, cigarettes, textiles and other items, and is known as the "Queen of Packaging". BOPP film has low surface energy and requires corona treatment before gluing or printing. After corona treatment, BOPP film has good printing adaptability and can be printed in multiple colors to obtain a beautiful appearance. Therefore, it is often used as the surface material of composite film.

[0003] In the prior art, a traditional BOPP film sample cutting machine requires a worker to fix the BOPP film on its surface and manually drive the sample cutting knife to move and cut the BOPP film. In this process, the sample cutting machine can only cut a single BOPP film. When the worker cuts different BOPP films, the worker may need to frequently change the BOPP film for cutting, which may be inconvenient to cut multiple BOPP films at the same time.

[0004] In view of this, we propose a rotary sample cutter for BOPP film processing. Utility Model Content

[0005] The utility model aims to provide a rotary sample cutter for BOPP film processing to solve the problems raised in the above background technology.

[0006] In view of this, the utility model provides a rotary sample cutter for BOPP film processing, comprising: a workbench, the top surface of the workbench is rotatably connected to a mounting column, a stepper motor is fixedly installed on the bottom surface of the workbench, and the top surface of the stepper motor drive shaft is fixedly installed on the mounting column;

[0007] A plurality of first mounting blocks, wherein the plurality of first mounting blocks are fixedly mounted on the outer circular wall surface of the mounting column, a mounting shell is provided on one side of the plurality of first mounting blocks, a slitting knife roller is provided inside the plurality of mounting shells, two second mounting grooves are respectively provided on one side of the plurality of first mounting blocks, a second spring is movably sleeved inside the second mounting groove, a second connecting rod is slidably connected inside the second mounting groove, a second fixing ring is fixedly sleeved on the inner circular wall surface of the second mounting groove, the inner circular wall surface of the second fixing ring is slidably connected to the second connecting rod, and one end of the second connecting rod is fixedly mounted on the mounting shell;

[0008] A plurality of cutting blocks, wherein the plurality of cutting blocks are arranged on the top surface of the workbench;

[0009] A plurality of limiting components are respectively arranged on both sides of a plurality of the cutting blocks, and every two limiting components form a group, and are used for limiting and fixing the BOPP film.

[0010] In the present technical solution, the staff fixes the BOPP film on the arc surface of multiple cutting blocks through the limit assembly, and then the staff uses a stepper motor, and then the rotation of the driving shaft of the stepper motor drives the mounting column to rotate, and at this time the rotation of the mounting column drives the multiple first mounting blocks and the mounting shell to rotate, and then the slitting roller inside the mounting shell will contact the BOPP film on the surface of the cutting block during the rotation process and cut the sample, in this process, the surface of the slitting roller contacting the cutting block will be squeezed and moved by the cutting block, and then the movement of the slitting roller will drive the mounting shell to move, and then the movement of the mounting shell The second connecting rod will be driven to retract into the second mounting groove and the second spring in the second mounting groove will be squeezed. At this time, the resilience of the second spring will push the second connecting rod, the mounting shell and the slitting knife roller to move in the opposite direction, so that the slitting knife roller will always be in contact with the surface of the cutting block, thereby ensuring the integrity of the BOPP film cutting by the slitting knife roller. At the same time, multiple BOPP films can be fixed and cut through multiple cutting blocks, so that the staff can fix different BOPP films on the surface of the cutting block for cutting, thereby achieving the effect of facilitating the cutting of multiple and different BOPP films.

[0011] In the above technical solution, further, the limit assembly includes:

[0012] A plurality of pressing plates are respectively arranged on both sides of a plurality of cutting blocks, two second mounting blocks are fixedly installed on the top surface of the cutting block, two first mounting grooves are provided on one side of the second mounting block, a first connecting rod is slidably connected inside the first mounting groove, a first spring is movably sleeved on the outer circular wall surface of the first connecting rod, a first limiting ring is fixedly sleeved on the inner circular wall surface of the second mounting block, the inner circular wall surface of the first limiting ring is slidably connected to the first connecting rod, and one end of the first connecting rod is fixedly installed on the pressing plate.

[0013] In the present technical solution, when the staff is limiting and fixing the BOPP film, the staff will pull the pressure plate, and the movement of the pressure plate will pull the first connecting rod out of the first mounting groove, and then the movement of the first connecting rod will squeeze the first spring. At this time, a certain distance will be pulled between the pressure plate and the cutting block, and then the staff can place the BOPP film between the pressure plate and the cutting block, and then the staff will release the pressure plate. At this time, the rebound force of the first spring will drive the pressure plate to reset, and then the pressure plate will limit and fix the BOPP film on the side of the cutting block. In this way, the BOPP film can be limited and fixed on the arc surface of the cutting block by using two pressure plates, which is convenient for limiting and fixing the BOPP film.

[0014] In the above technical solution, further, a circular through hole is opened on the top surface of the mounting shell, a positioning bolt is slidably connected inside the circular through hole, a threaded hole is opened on the inner bottom surface of the mounting shell, the threaded hole is threadedly connected to the positioning bolt, and the positioning bolt is rotatably connected to the slitting knife roller.

[0015] In this technical solution, the staff can unscrew the positioning bolt from the inside of the threaded hole, thereby releasing the limit of the slitting knife roller, and then the staff can take the slitting knife roller out from the inside of the mounting shell, thereby facilitating the staff to replace the slitting knife roller.

[0016] In the above technical solution, further, a plurality of threaded sleeves are fixedly installed on the top surface of the workbench, a plurality of threaded sleeves are threadedly connected with screws inside, a handwheel is fixedly installed on one end of a plurality of screws, and the other ends of a plurality of screws are respectively fixedly installed on the plurality of cutting blocks.

[0017] In the present technical solution, when the staff replaces the slitting rollers of different sizes, the staff can turn the hand wheel, and the rotation of the hand wheel will drive the screw to rotate, and then the cutting block will move under the threaded transmission of the screw and the threaded sleeve, so as to facilitate the adjustment of the use position of the cutting block to adapt to slitting rollers of different specifications.

[0018] In the above technical solution, further, a plurality of limiting holes are opened on the top surface of the workbench, the interiors of the plurality of limiting holes are slidably connected with limiting blocks, and the top surfaces of the plurality of limiting blocks are fixedly mounted on the plurality of cutting blocks respectively.

[0019] In the technical solution, when the cutting block moves, the limiting block will slide inside the limiting hole, so as to facilitate the guiding and limiting of the cutting block and prevent the cutting block from being deviated when moving.

[0020] In the above technical solution, further, the top surface of the workbench is provided with a plurality of scale lines, and the plurality of scale lines respectively correspond to the positions of the plurality of limit holes.

[0021] In this technical solution, it is convenient for the staff to know the moving distance of the cutting block, and further convenient for the staff to adjust the use positions of multiple cutting blocks.

[0022] The beneficial effects of the utility model are:

[0023] The rotary sample cutter for BOPP film processing uses a limit assembly to limit and fix the BOPP film on the arc surface of multiple sample cutting blocks, and then uses a stepper motor to drive the mounting column to rotate. At this time, the multiple first mounting blocks and the mounting shell will rotate together, and then the slitting knife roller will cut the BOPP film on the surface of the sample cutting block. During this process, the surface of the slitting knife roller contacting the sample cutting block will be squeezed and moved by the sample cutting block. At this time, the rebound force of the second spring will push the second connecting rod, the mounting shell and the slitting knife roller to move in the opposite direction, and then the slitting knife roller will always be attached to the surface of the sample cutting block, thereby ensuring the integrity of the BOPP film sample cut by the slitting knife roller, and then the staff can fix different BOPP films on the surface of the sample cutting block for cutting, thereby achieving the effect of facilitating the cutting of multiple and different BOPP films. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the sample cutting block in the utility model;

[0026] Figure 3 This is a schematic diagram of the installation shell structure in the utility model;

[0027] Figure 4 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0028] The symbols in the figure are:

[0029] 1. Workbench; 2. Mounting column; 3. Stepper motor; 4. First mounting block; 5. Sample cutting block; 6. Mounting shell; 7. Limit hole; 8. Limit block; 9. Scale line; 10. Second mounting block; 11. First mounting slot; 12. First connecting rod; 13. First spring; 14. First limiting ring; 15. Pressing plate; 16. Threaded sleeve; 17. Screw; 18. Hand wheel; 19. Slitting roller; 20. Threaded hole; 21. Positioning bolt; 22. Second mounting slot; 23. Second spring; 24. Second connecting rod; 25. Second fixing ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0031] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0033] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0034] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0035] Embodiment 1:

[0036] See also Figure 1-Figure 4 As shown, this embodiment provides a rotary sample cutting machine for BOPP film processing, comprising:

[0037] A workbench 1, the top surface of the workbench 1 is rotatably connected with a mounting column 2, a stepper motor 3 is fixedly mounted on the bottom surface of the workbench 1, and the top surface of the driving shaft of the stepper motor 3 is fixedly mounted on the mounting column 2;

[0038] A plurality of first mounting blocks 4, wherein the plurality of first mounting blocks 4 are fixedly mounted on the outer circumferential wall surface of the mounting column 2, a mounting shell 6 is provided on one side of the plurality of first mounting blocks 4, a slitting knife roller 19 is provided inside the plurality of mounting shells 6, two second mounting grooves 22 are respectively provided on one side of the plurality of first mounting blocks 4, a second spring 23 is movably sleeved inside the second mounting groove 22, a second connecting rod 24 is slidably connected inside the second mounting groove 22, a second fixing ring 25 is fixedly sleeved on the inner circumferential wall surface of the second mounting groove 22, the inner circumferential wall surface of the second fixing ring 25 is slidably connected to the second connecting rod 24, and one end of the second connecting rod 24 is fixedly mounted on the mounting shell 6;

[0039] A plurality of cutting blocks 5, wherein the plurality of cutting blocks 5 are arranged on the top surface of the workbench 1;

[0040] A plurality of limiting components are respectively arranged on both sides of a plurality of cutting blocks 5, and every two limiting components form a group, and are used to limit and fix the BOPP film.

[0041] Among them, the staff fixes the BOPP film on the arc surface of multiple cutting blocks 5 through the limiting component, and then the staff uses the stepper motor 3, and then the rotation of the driving shaft of the stepper motor 3 will drive the mounting column 2 to rotate. At this time, the rotation of the mounting column 2 will drive the multiple first mounting blocks 4 and the mounting shell 6 to rotate, and then the slitting roller 19 inside the mounting shell 6 will contact the BOPP film on the surface of the cutting block 5 during the rotation process and cut the sample. In this process, the surface of the slitting roller 19 contacting the cutting block 5 will be squeezed and moved by the cutting block 5, and then the movement of the slitting roller 19 will drive the mounting shell 6 to move, and then the movement of the mounting shell 6 will drive the first The second connecting rod 24 retracts into the second mounting groove 22 and squeezes the second spring 23 in the second mounting groove 22. At this time, the resilience of the second spring 23 will push the second connecting rod 24, the mounting shell 6 and the slitting roller 19 in the opposite direction to move, so that the slitting roller 19 will always be in contact with the surface of the cutting block 5, thereby ensuring the integrity of the BOPP film cutting by the slitting roller 19. At the same time, multiple BOPP films can be fixed and cut through multiple cutting blocks 5, so that the staff can fix different BOPP films on the surface of the cutting block 5 for cutting, thereby achieving the effect of facilitating the cutting of multiple and different BOPP films.

[0042] Embodiment 2:

[0043] This embodiment provides a rotary sample cutter for BOPP film processing, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The limiter assembly includes:

[0044] A plurality of pressing plates 15 are respectively arranged on both sides of a plurality of cutting blocks 5. Two second mounting blocks 10 are fixedly installed on the top surface of the cutting block 5. Two first mounting grooves 11 are provided on one side of the second mounting block 10. A first connecting rod 12 is slidably connected inside the first mounting groove 11. A first spring 13 is movably sleeved on the outer circular wall surface of the first connecting rod 12. A first limiting ring 14 is fixedly sleeved on the inner circular wall surface of the second mounting block 10. The inner circular wall surface of the first limiting ring 14 is slidably connected to the first connecting rod 12. One end of the first connecting rod 12 is fixedly installed on the pressing plate 15.

[0045] Among them, when the staff limits and fixes the BOPP film, the staff pulls the pressure plate 15, and then the movement of the pressure plate 15 will pull the first connecting rod 12 out of the first mounting groove 11, and then the movement of the first connecting rod 12 will squeeze the first spring 13. At this time, a certain distance will be pulled between the pressure plate 15 and the cutting block 5, and then the staff can place the BOPP film between the pressure plate 15 and the cutting block 5, and then the staff releases the pressure plate 15. At this time, the rebound force of the first spring 13 will drive the pressure plate 15 to reset, and then the pressure plate 15 will limit and fix the BOPP film on the side of the cutting block 5. In this way, the BOPP film can be limited and fixed on the arc surface of the cutting block 5 by using two pressure plates 15, so as to facilitate the limit and fixation of the BOPP film.

[0046] Embodiment 3:

[0047] The present embodiment provides a rotary sample cutting machine for BOPP film processing. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: a circular through hole is opened on the top surface of the mounting shell 6, and a positioning bolt 21 is slidably connected inside the circular through hole; a threaded hole 20 is opened on the inner bottom surface of the mounting shell 6, and the threaded hole 20 is threadedly connected to the positioning bolt 21, and the positioning bolt 21 is rotatably connected to the slitting roller 19.

[0048] Among them, the staff can unscrew the positioning bolt 21 from the inside of the threaded hole 20, thereby releasing the limit of the slitting roller 19, and then the staff can take out the slitting roller 19 from the inside of the mounting shell 6, so as to facilitate the staff to replace the slitting roller 19.

[0049] Embodiment 4:

[0050] The present embodiment provides a rotary sample cutter for BOPP film processing. In addition to the technical solutions of the above embodiments, it also has the following technical features: a plurality of threaded sleeves 16 are fixedly installed on the top surface of the workbench 1, and a plurality of threaded sleeves 16 are threadedly connected with screws 17 inside, and a hand wheel 18 is fixedly installed at one end of the plurality of screws 17, and the other ends of the plurality of screws 17 are respectively fixedly installed with a plurality of sample cutting blocks 5.

[0051] Among them, when the staff replaces the slitting roller 19 of different sizes, the staff can turn the hand wheel 18, and the rotation of the hand wheel 18 will drive the screw 17 to rotate, and then the cutting block 5 will move under the threaded transmission action of the screw 17 and the threaded sleeve 16, so as to facilitate the adjustment of the use position of the cutting block 5 to adapt to the slitting rollers 19 of different specifications.

[0052] Embodiment 5:

[0053] The present embodiment provides a rotary sample cutter for BOPP film processing. In addition to the technical solutions of the above embodiments, it also has the following technical features: a plurality of limiting holes 7 are provided on the top surface of the workbench 1, and the interiors of the plurality of limiting holes 7 are slidably connected to limiting blocks 8, and the top surfaces of the plurality of limiting blocks 8 are fixedly mounted to the plurality of sample cutting blocks 5 respectively.

[0054] When the cutting block 5 moves, the limiting block 8 will slide inside the limiting hole 7, so as to facilitate the guiding and limiting of the cutting block 5 and prevent the cutting block 5 from being deviated when moving.

[0055] Embodiment 6:

[0056] The present embodiment provides a rotary sample cutting machine for BOPP film processing. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: a plurality of scale lines 9 are provided on the top surface of the workbench 1, and the plurality of scale lines 9 correspond to the positions of the plurality of limit holes 7 respectively.

[0057] This makes it easier for the staff to know the moving distance of the sample cutting block 5 , thereby making it easier for the staff to adjust the use positions of the plurality of sample cutting blocks 5 .

[0058] When the rotary sample cutter for BOPP film processing of the present embodiment is in use, the staff fixes the BOPP film on the arc surface of the plurality of sample cutting blocks 5 by the limit assembly, and then the staff uses the stepper motor 3, and then the rotation of the driving shaft of the stepper motor 3 drives the mounting column 2 to rotate, and at this time, the rotation of the mounting column 2 drives the plurality of first mounting blocks 4 and the mounting shell 6 to rotate, and then the slitting roller 19 inside the mounting shell 6 contacts the BOPP film on the surface of the sample cutting block 5 during the rotation process, and cuts the sample, and in this process, the surface of the slitting roller 19 contacting the sample cutting block 5 will be squeezed and moved by the sample cutting block 5, and then the movement of the slitting roller 19 drives the mounting shell 6 to move, and The movement of the rear mounting shell 6 will drive the second connecting rod 24 to retract into the second mounting groove 22 and squeeze the second spring 23 inside the second mounting groove 22. At this time, the resilience of the second spring 23 will push the second connecting rod 24, the mounting shell 6 and the slitting roller 19 in the opposite direction to move, so that the slitting roller 19 will always be in contact with the surface of the cutting block 5, thereby ensuring the integrity of the BOPP film cutting by the slitting roller 19. At the same time, multiple BOPP films can be fixed and cut through multiple cutting blocks 5, so that the staff can fix different BOPP films on the surface of the cutting block 5 for cutting, thereby achieving the effect of facilitating the cutting of multiple and different BOPP films.

[0059] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A rotary sample cutter for BOPP film processing, characterized in that: include: A workbench (1), wherein the top surface of the workbench (1) is rotatably connected to a mounting column (2), a stepper motor (3) is fixedly mounted on the bottom surface of the workbench (1), and the top surface of the drive shaft of the stepper motor (3) is fixedly mounted to the mounting column (2); A plurality of first mounting blocks (4), wherein the plurality of first mounting blocks (4) are fixedly mounted on the outer circular wall surface of the mounting column (2), a mounting shell (6) is provided on one side of the plurality of first mounting blocks (4), a slitting knife roller (19) is provided inside the plurality of mounting shells (6), two second mounting grooves (22) are respectively provided on one side of the plurality of first mounting blocks (4), a second spring (23) is movably sleeved inside the second mounting groove (22), a second connecting rod (24) is slidably connected inside the second mounting groove (22), a second fixing ring (25) is fixedly sleeved on the inner circular wall surface of the second mounting groove (22), the inner circular wall surface of the second fixing ring (25) is slidably connected to the second connecting rod (24), and one end of the second connecting rod (24) is fixedly mounted on the mounting shell (6); A plurality of cutting blocks (5), wherein the plurality of cutting blocks (5) are arranged on the top surface of the workbench (1); A plurality of position limiting components are respectively arranged on both sides of a plurality of the sample cutting blocks (5), and every two of the position limiting components form a group, and are used to position and fix the BOPP film.

2. The rotary sample cutter for BOPP film processing according to claim 1, characterized in that: The limiting assembly comprises a plurality of pressing plates (15), wherein the plurality of pressing plates (15) are respectively arranged on both sides of the plurality of cutting blocks (5); two second mounting blocks (10) are fixedly mounted on the top surface of the cutting block (5); two first mounting grooves (11) are provided on one side of the second mounting block (10); a first connecting rod (12) is slidably connected inside the first mounting groove (11); a first spring (13) is movably sleeved on the outer circular wall surface of the first connecting rod (12); a first limiting ring (14) is fixedly sleeved on the inner circular wall surface of the second mounting block (10); the inner circular wall surface of the first limiting ring (14) is slidably connected to the first connecting rod (12); and one end of the first connecting rod (12) is fixedly mounted on the pressing plate (15).

3. The rotary sample cutter for BOPP film processing according to claim 1, characterized in that: A circular through hole is provided on the top surface of the mounting shell (6), a positioning bolt (21) is slidably connected inside the circular through hole, a threaded hole (20) is provided on the inner bottom surface of the mounting shell (6), the threaded hole (20) is threadedly connected to the positioning bolt (21), and the positioning bolt (21) is rotatably connected to the slitting knife roller (19).

4. The rotary sample cutter for BOPP film processing according to claim 1, characterized in that: A plurality of threaded sleeves (16) are fixedly mounted on the top surface of the workbench (1), a plurality of threaded sleeves (16) are internally threadedly connected with screw rods (17), a hand wheel (18) is fixedly mounted on one end of the plurality of screw rods (17), and the other ends of the plurality of screw rods (17) are respectively fixedly mounted on the plurality of cutting blocks (5).

5. The rotary sample cutter for BOPP film processing according to claim 1, characterized in that: The top surface of the workbench (1) is provided with a plurality of limiting holes (7), the interiors of the plurality of limiting holes (7) are slidably connected to limiting blocks (8), and the top surfaces of the plurality of limiting blocks (8) are respectively fixedly mounted to the plurality of sample cutting blocks (5).

6. The rotary sample cutter for BOPP film processing according to claim 5, characterized in that: The top surface of the workbench (1) is provided with a plurality of scale lines (9), and the plurality of scale lines (9) respectively correspond to the positions of the plurality of limit holes (7).

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