Cigarette packet die cutting device

Abstract

The utility model relates to the technical field of die-cutting devices, and discloses a cigarette packet die-cutting device which comprises a die-cutting plate and a lower base plate, the die-cutting plate comprises a die-cutting base plate, a cutter groove is formed in the die-cutting base plate, a die-cutting knife is installed in the cutter groove, the die-cutting knife is composed of a plurality of linear knives and a plurality of corner knives, the linear knives are linear knives, and the corner knives are arranged on the lower base plate. The corner cutter is a V-shaped cutter with any included angle; when the corner cutter is mounted, the cutter point is higher than the cutter point when the linear cutter is mounted; clamp installation holes are formed in the side faces, corresponding to the linear cutter and the corner cutter, of the die cutting base plate, a rotating wheel clamp is installed in each clamp installation hole, one rotating wheel clamp comprises a rotating rod, a base and an eccentric wheel, the rotating rod drives the eccentric wheel to eccentrically rotate when rotating, and therefore the farthest end of the eccentric wheel abuts against the die cutting cutter to be fixed. The tobacco bale die-cutting device has the advantages that the precision of the die-cutting knife is high, the die-cutting knife is installed stably, the corner is cut completely, and the tobacco bale die-cutting device is not prone to upwarp.

Description

Technical Field

[0001] The utility model relates to the technical field of die-cutting devices, in particular to a cigarette package die-cutting device. Background Art

[0002] The cigarette package die-cutting device refers to the device used for die-cutting cigarette box packaging. There are two common cigarette package die-cutting devices in the prior art. One is to use a die-cutting plate and a lower pad for extrusion for die-cutting, and the other is to use upper and lower rollers for continuous die-cutting. Due to the low precision and high processing difficulty of roller die-cutting, die-cutting plates are often used to die-cut cigarette box packaging in daily production.

[0003] With the rapid development of science and technology, the application of die-cutting boards is becoming more and more extensive. Usually, a die-cutting board is composed of a die-cutting board substrate and a die-cutting knife. The die-cutting board is made by first designing a pattern according to the needs, and then a laser cutting machine cuts the die-cutting board substrate according to the pre-designed pattern to form a die-cutting knife groove, and then the die-cutting knife is processed, that is, the die-cutting knife is fixedly assembled in the die-cutting knife groove on the die-cutting board substrate. Because the die-cutting knife groove on the die-cutting board substrate is an interference fit with the die-cutting knife, it will cause the die-cutting knife to loosen and affect the die-cutting accuracy.

[0004] The patent application number CN201521053330.3 discloses a cigarette pack die-cutting plate, which is composed of a bottom plate, an upper resin plate and a lower resin plate. A cigarette box knife line mounting groove is provided in the middle of the bottom plate. The bottom plate is a square bottom plate. Four latch positioning holes are located at the four corners of the square bottom plate. The upper resin plate is provided with upper positioning holes that match the positions of the latch positioning holes of the bottom plate. The lower resin plate is provided with lower positioning holes that match the positions of the latch positioning holes of the bottom plate. The bottom plate is fixed to the upper resin plate and the lower resin plate at the positions of the positioning holes by positioning pins. The distance between the bottom plate and the upper resin plate and the lower resin plate is the same. Since the upper resin plate and the lower resin plate will not be affected by factors such as environmental humidity, the bottom plate is protected and the problem of knife plate size deformation is solved. At the same time, the positioning of the bottom plate by the upper resin plate and the lower resin plate ensures the accuracy of the product size.

[0005] By analyzing the existing technology, it was found that the cigarette package die-cutting device has the following defects: the die-cutting knife groove is an interference fit with the die-cutting knife, which causes the die-cutting knife to loosen and thus affects the die-cutting accuracy; the die-cutting knife is not tightly fitted at the corner, resulting in incomplete cutting at the corner; when the knife is retracted, the paper at the corner will be lifted or torn due to the friction of the die-cutting knife, affecting the yield rate; when cutting, the knife presses against the paper arbitrarily, causing the paper to deform and thus affecting the yield rate. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the utility model provides a cigarette package die-cutting device, which has the advantages of high die-cutting knife precision, stable installation of the die-cutting knife, complete cutting at corners and not easy to warp up, and solves the problems of loose die-cutting knife affecting die-cutting precision, incomplete cutting at corners and high friction.

[0008] (II) Technical solution

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A cigarette package die-cutting device comprises a die-cutting plate and a bottom plate, wherein the die-cutting plate comprises a die-cutting substrate, a tool groove is arranged on the die-cutting substrate, a die-cutting knife is installed in the tool groove, the tool groove is larger than the die-cutting knife, the die-cutting knife consists of a plurality of straight knives and a plurality of corner knives, each straight knife is a straight knife, each corner knife is a "V"-shaped knife with an arbitrary angle, the straight knife is installed at the position of each straight segment in the tool groove, and the corner knife is installed at the position of the corner in the tool groove, and the tip height of each corner knife is higher than the tip height of each straight knife when it is installed, so that the corner knife cuts the corner first, thereby positioning and fixing the paperboard by the corner knife;

[0011] The die-cutting substrate is provided with fixture mounting holes on the sides corresponding to each straight knife and corner knife, and a rotating wheel fixture is installed in each fixture mounting hole, and each fixture mounting hole includes an upper hole at the top and a lower hole at the bottom. A rotating wheel fixture includes a rotating rod, a base and an eccentric wheel. The top of the rotating rod is clamped in the upper hole for rotation, and the base and the eccentric wheel are arranged in the lower hole. The base is fixed to the bottom of the rotating rod, and the eccentric wheel is sleeved on the outside of the rotating rod. The eccentric wheel and the rotating rod are fixed by a key slot, and the rotating rod passes through the eccentric part of the eccentric wheel. When the rotating rod rotates, it drives the eccentric wheel to rotate eccentrically, so that the farthest end of the eccentric wheel is pressed against the die-cutting knife for fixation.

[0012] Preferably, in any rotating wheel clamp, a raised key is provided on the side of the rotating rod located in the lower hole, and a slot is provided at a position corresponding to the key on the eccentric wheel, the slot interferes with the key, and the eccentric wheel slides up and down under the limiting action of the key.

[0013] Preferably, in the rotating wheel clamp on the side of each corner knife, a spring is also sleeved on the outer side of the rotating rod, one end of the spring is pressed against the base, and the other end of the spring is pressed against the eccentric wheel. When the corner knife is installed, the eccentric wheel rotates and clamps the corner knife at the top position of the convex key. When the corner knife finishes cutting and presses against the buffer pad, it contracts inward. At this time, the spring is in a compressed state, which reduces the distance that the corner knife passes through the cardboard, thereby reducing the influence of friction on the cardboard when the knife is retracted.

[0014] Preferably, the material of the outer ring of the eccentric wheel is soft rubber material, which improves elasticity and friction and prevents the die-cutting knife from loosening.

[0015] Preferably, in any rotating wheel clamp, the top of the rotating rod is flush with the surface of the die-cut substrate, and the top of the rotating rod is also provided with an inwardly recessed inner angle groove, and the inner angle groove is used to rotate the rotating rod to drive the eccentric wheel to rotate. The top of the rotating rod is also provided with an inwardly recessed pointer groove, and the pointer groove points to the farthest position of the eccentric wheel.

[0016] Preferably, a die-cutting back plate is also provided on the back of the die-cutting substrate, and the die-cutting back plate is made of resin. Positioning holes for fixation are provided on the die-cutting substrate and the die-cutting back plate. The die-cutting substrate and the die-cutting back plate are fixed by bolts in each positioning hole. The tool groove passes through the die-cutting substrate from top to bottom, and the bottom of the die-cutting knife is pressed against the die-cutting back plate. The die-cutting back plate provides elasticity for the die-cutting knife, thereby improving the durability of the tool.

[0017] Preferably, a die-cutting groove is provided on the lower pad at a position corresponding to the tool groove, and a plurality of straight buffer pads and corner buffer pads are provided at the bottom of the die-cutting groove, each straight buffer pad is located at a straight segment in the die-cutting groove, and each corner buffer pad is located at a corner in the die-cutting groove, and each straight buffer pad and corner buffer pad is provided with a groove corresponding to the shape of the tool tip. During die-cutting, the tool tip of each straight knife is pressed against the corresponding straight buffer pad, and the tool tip of each corner knife is pressed against the corresponding corner buffer pad.

[0018] Preferably, the height of each corner buffer pad is higher than the height of the straight buffer pad, which serves to reduce the distance that the corner knife enters the die-cutting groove, thereby reducing the friction of the corner knife on the cardboard when retracting the knife and improving the yield rate.

[0019] Preferably, the die-cutting substrate is also provided with raised indentation lines, and the indentation lines are used to press creases on the paperboard.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model provides a cigarette package die-cutting device, which has the following beneficial effects:

[0022] 1. The cigarette package die-cutting device installs multiple straight knives and corner knives in the tool groove. The corner knife cuts the corner of the cardboard to avoid incomplete cutting at the corner. At the same time, the tip height of the corner knife is higher than the tip height of the straight knife. Therefore, during die-cutting, the corner knife first contacts the cardboard for die-cutting. Multiple corner knives pass through the cardboard to fix the cardboard at multiple points, preventing the cardboard from being squeezed, warped or deformed during cutting, thereby affecting the accuracy, and achieving a high-precision die-cutting effect.

[0023] 2. The cigarette package die-cutting device is provided with a fixture mounting hole on the side of the die-cutting knife, and a rotating wheel fixture is installed in the fixture mounting hole. The rotating wheel fixture drives the eccentric wheel to perform eccentric rotation through a rotating rod. When the farthest end of the eccentric wheel is against the die-cutting knife, the die-cutting knife is fixed, thereby avoiding the problem in the prior art that the tool groove interferes with the die-cutting knife and causes the die-cutting knife to loosen.

[0024] 3. The cigarette package die-cutting device is provided with a convex key on the rotating rod, and a slot is provided at the position of the eccentric wheel corresponding to the convex key. The eccentric wheel slides up and down under the limiting action of the convex key, and a spring is provided between the eccentric wheel and the base, so that the corner knife has up and down elasticity while being clamped, and the elasticity of the spring is greater than the pressure on the corner knife when passing through the cardboard. The spring is not compressed when the corner knife cuts, and the corner knife contracts inward when the corner knife hits the corner buffer pad in the die-cutting groove, thereby reducing the distance that the corner knife passes through the cardboard. The shorter the passing distance, the smaller the friction force on the cardboard when the knife is advanced and retreated, thereby avoiding the corner of the cardboard from being lifted up or damaged due to pulling when the knife is advanced and retreated, and improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the die-cutting plate and the bottom pad in the cigarette package die-cutting device of the utility model.

[0026] Figure 2 It is a schematic diagram of the structure of the die-cutting plate in the cigarette package die-cutting device of the utility model.

[0027] Figure 3 It is a bottom view of the back side of the die-cutting plate in the cigarette package die-cutting device of the utility model.

[0028] Figure 4 The utility model is a schematic diagram of the structure of the rotary wheel fixture used for the straight line knife.

[0029] Figure 5 The utility model is a schematic diagram of the structure of the rotary wheel fixture used for the corner cutter.

[0030] Figure 6 It is a partial enlarged view of the bottom of the die-cut substrate of the utility model.

[0031] Figure 7 It is a cross-sectional view inside the die-cutting groove of the utility model.

[0032] In the figure: 1, die-cutting board; 11, die-cutting substrate; 12, die-cutting back plate; 111, die-cutting knife; 1111, straight knife; 1112, corner knife; 112, indentation line; 113, tool slot; 114, positioning hole; 115, fixture mounting hole; 1151, upper hole; 1152, lower hole;

[0033] 2. Bottom pad; 21. Die-cut groove; 211. Straight buffer pad; 212. Corner buffer pad;

[0034] 3. Rotating wheel fixture; 31. Rotating rod; 32. Base; 33. Eccentric wheel; 34. Spring; 311. Key; 312. Inner angle groove; 313. Pointer groove; 331. Card slot. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Embodiment 1:

[0039] This embodiment provides a cigarette package die-cutting device having the following technical features.

[0040] See also Figure 1-7A cigarette package die-cutting device comprises a die-cutting plate 1 and a bottom plate 2, wherein the die-cutting plate 1 comprises a die-cutting substrate 11, a tool groove 113 is arranged on the die-cutting substrate 11, a die-cutting knife 111 is installed in the tool groove 113, the tool groove 113 interferes with the die-cutting knife 111, and the die-cutting knife 111 consists of a plurality of straight knives 1111 and a plurality of corner knives 1112, each straight knife 1111 is a straight knife, each corner knife 1112 is a "V"-shaped knife with an arbitrary angle, the straight knife 1111 is installed at the position of each straight segment in the tool groove 113, and the corner knife 1112 is installed at the position of the corner in the tool groove 113, and the tip height of each corner knife 1112 when installed is higher than the tip height of each straight knife 1111 when installed, and its function is to make the corner knife 1112 cut the corner first, so as to position and fix the cardboard by the corner knife 1112.

[0041] Through the above technical solution, multiple straight knives 1111 and corner knives 1112 are installed in the tool groove 113. The corner knife 1112 cuts the corner of the cardboard, avoiding incomplete cutting at the corner. At the same time, the tip height of the corner knife 1112 is higher than the tip height of the straight knife 1111, so that the corner knife 1112 first contacts the cardboard for die-cutting during die-cutting. Multiple corner knives 1112 pass through the cardboard to fix the cardboard at multiple points, thereby preventing the cardboard from being squeezed, warped or deformed during cutting, thereby affecting the accuracy, and achieving a high-precision die-cutting effect.

[0042] In an optional embodiment, if Figure 1-7 As shown, the die-cutting substrate 11 is provided with fixture mounting holes 115 on the sides corresponding to each straight knife 1111 and the corner knife 1112, and a rotating wheel fixture 3 is installed in each fixture mounting hole 115, and each fixture mounting hole 115 includes an upper hole 1151 at the top and a lower hole 1152 at the bottom. A rotating wheel fixture 3 includes a rotating rod 31, a base 32 and an eccentric wheel 33. The top of the rotating rod 31 is clamped in the upper hole 1151 for rotation, the base 32 and the eccentric wheel 33 are arranged in the lower hole 1152, the base 32 is fixed to the bottom of the rotating rod 31, the eccentric wheel 33 is sleeved on the outside of the rotating rod 31, the eccentric wheel 33 and the rotating rod 31 are fixed by a keyway, the rotating rod 31 passes through the eccentric part of the eccentric wheel 33, and when the rotating rod 31 rotates, it drives the eccentric wheel 33 to rotate eccentrically, so that the farthest end of the eccentric wheel 33 is pressed against the die-cutting knife 111 for fixation.

[0043] Through the above technical solution, a clamp mounting hole 115 is provided on the side of the die-cutting knife 111, and a rotating wheel clamp 3 is installed in the clamp mounting hole 115. The rotating wheel clamp 3 drives the eccentric wheel 33 to perform eccentric rotation through the rotating rod 31. When the farthest end of the eccentric wheel 33 is against the die-cutting knife 111, the die-cutting knife 111 is fixed, thereby avoiding the problem in the prior art that the tool groove 113 interferes with the die-cutting knife 111 and causes the die-cutting knife 111 to loosen.

[0044] In an optional embodiment, if Figure 4 As shown, in any rotating wheel clamp 3, a raised key 311 is provided on the side of the portion of the rotating rod 31 located in the lower hole 1152, and a slot 331 is provided at a position corresponding to the key 311 of the eccentric wheel 33. The slot 331 interferes with the key 311, and the eccentric wheel 33 slides up and down under the limiting action of the key 311.

[0045] In an optional embodiment, if Figure 5 As shown, in the rotating wheel clamp 3 on the side of each corner knife 1112, a spring 34 is also sleeved on the outer side of the rotating rod 31, one end of the spring 34 is pressed against the base 32, and the other end of the spring 34 is pressed against the eccentric wheel 33. When the corner knife 1112 is installed, the eccentric wheel 33 rotates and clamps the corner knife 1112 at the top position of the convex key 311. When the corner knife 1112 is pressed against the buffer pad after cutting, it shrinks inward. At this time, the spring 34 is in a compressed state, which reduces the distance that the corner knife 1112 passes through the cardboard, thereby reducing the influence of friction on the cardboard when the knife is retracted.

[0046] Through the above technical scheme, a convex key 311 is provided on the rotating rod 31, and a clamping groove 331 is provided at a position of the eccentric wheel 33 corresponding to the convex key 311. The eccentric wheel 33 slides up and down under the limiting action of the convex key 311, and then a spring 34 is provided between the eccentric wheel 33 and the base 32, so that the corner knife 1112 has up and down elasticity when being clamped, and the elasticity of the spring 34 is greater than the pressure on the corner knife 1112 when passing through the cardboard. The spring 34 is not compressed when the corner knife 1112 cuts, and the corner knife 1112 contracts inward when it is against the corner buffer pad 212 in the die-cutting groove 21, thereby reducing the distance that the corner knife 1112 passes through the cardboard. The shorter the passing distance, the smaller the friction force on the cardboard when the knife is advanced and retreated, thereby avoiding the corner of the cardboard from being lifted up or damaged due to pulling when the knife is advanced and retreated, thereby improving the yield rate.

[0047] In an optional embodiment, if Figure 1-7 As shown, the material of the outer ring of the eccentric wheel 33 is soft rubber material, which improves elasticity and friction, thereby preventing the die cutter 111 from loosening.

[0048] In an optional embodiment, if Figure 1-5 As shown, in any rotating wheel fixture 3, the top of the rotating rod 31 is flush with the surface of the die-cut substrate 11, and an inwardly recessed inner angle groove 312 is also provided on the top of the rotating rod 31. The inner angle groove 312 is used to rotate the rotating rod 31 to drive the eccentric wheel 33 to rotate. The top of the rotating rod 31 is also provided with an inwardly recessed pointer groove 313, and the pointer groove 313 points to the farthest end of the eccentric wheel 33.

[0049] In an optional embodiment, if Figure 2As shown, a die-cutting back plate 12 is also provided on the back of the die-cutting substrate 11. The die-cutting back plate 12 is made of resin. Positioning holes 114 for fixing are provided on the die-cutting substrate 11 and the die-cutting back plate 12. The die-cutting substrate 11 and the die-cutting back plate 12 are fixed by bolts in each positioning hole 114. The tool groove 113 passes through the die-cutting substrate 11 from top to bottom. The bottom of the die-cutting knife 111 is against the die-cutting back plate 12. The die-cutting back plate 12 provides elasticity for the die-cutting knife 111 to improve the durability of the knife.

[0050] In an optional embodiment, if Figure 1-7 As shown, a die-cutting groove 21 is provided at a position corresponding to the tool groove 113 on the lower pad 2, and a plurality of straight buffer pads 211 and corner buffer pads 212 are provided at the bottom of the die-cutting groove 21, each straight buffer pad 211 is located at a straight line segment in the die-cutting groove 21, and each corner buffer pad 212 is located at a corner in the die-cutting groove 21, and each straight buffer pad 211 and corner buffer pad 212 is provided with a groove corresponding to the shape of the tool tip, and during die-cutting, the tool tip of each straight knife 1111 is pressed against the corresponding straight buffer pad 211, and the tool tip of each corner knife 1112 is pressed against the corresponding corner buffer pad 212.

[0051] In an optional embodiment, if Figure 7 As shown, the height of each corner buffer pad 212 is higher than the height of the straight buffer pad 211, and its function is to reduce the distance that the corner knife 1112 enters the die-cutting groove 21, thereby reducing the friction of the corner knife 1112 on the cardboard when retracting the knife, thereby improving the yield rate.

[0052] In an optional embodiment, if Figure 2 As shown, the die-cutting substrate 11 is also provided with a raised indentation line 112, and the indentation line 112 is used to press a fold on the paperboard.

[0053] Working principle: During installation, the corner knife 1112 and the straight knife 1111 are installed into the tool groove 113 in sequence, wherein the height of the corner knife 1112 head position is higher than the height of the straight knife 1111 head position, and the bottoms of the straight knife 1111 and the corner knife 1112 are clamped by the eccentric wheel 33. The specific operation is to rotate the rotating rod 31 to drive the eccentric wheel 33 to rotate eccentrically, so that the farthest end of the eccentric wheel 33 is pressed against the straight knife 1111 and the corner knife 1112 for fixation. The eccentric wheel 33 is made of elastic rubber material, which can be clamped tighter to prevent the tool from loosening; after the tool is fixed, die-cutting is performed, the cardboard is placed on the lower pad 2, and the die-cutting board 1 is pressed above the lower pad 2 for extrusion. The corner knife 1112 first contacts the cardboard for cutting, and the corner knife 1112 fixes the cardboard position at multiple points while passing through the cardboard. , which prevents the cardboard from tilting up when it is squeezed. After the corner knife 1112 passes through the cardboard, the tip of the knife hits the corner buffer pad 212. At this time, the spring 34 under the eccentric wheel 33 connected to the corner knife 1112 contracts under the pressure, thereby causing the corner knife 1112 to shrink and reducing the portion of the corner knife 1112 that passes through the cardboard; continue to press down until the straight knife 1111 passes through the cardboard, thereby completing the die-cutting of all parts, and retract the knife after the die-cutting is completed. When retracting the knife, the straight knife 1111 retracts normally, and the corner knife 1112 remains stationary before the spring 34 is fully extended, which prevents the friction force of the knife from causing the cut corner of the cardboard to tilt up when retracting the knife. After the retraction is completed, the corner knife 1112 automatically pops up to a position higher than the straight knife 1111 under the action of the spring 34. The steps are consistent with the original die-cutting, and a better die-cutting effect is achieved without adding any operation steps.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cigarette package die-cutting device, comprising a die-cutting plate (1) and a bottom plate (2), wherein the die-cutting plate (1) comprises a die-cutting substrate (11), wherein a tool groove (113) is provided on the die-cutting substrate (11), wherein a die-cutting knife (111) is installed in the tool groove (113), wherein the tool groove (113) interferes with the die-cutting knife (111), and wherein: The die cutting knife (111) is composed of a plurality of straight knives (1111) and a plurality of corner knives (1112), each straight knife (1111) is a straight knife, each corner knife (1112) is a "V"-shaped knife with an arbitrary angle, the straight knife (1111) is installed at the position of each straight segment in the knife groove (113), and the corner knife (1112) is installed at the position of the corner in the knife groove (113), and the tip height of each corner knife (1112) when installed is higher than the tip height of each straight knife (1111) when installed; The die-cutting substrate (11) is provided with a clamp mounting hole (115) on the side corresponding to each straight knife (1111) and corner knife (1112), and a rotating wheel clamp (3) is installed in each clamp mounting hole (115); Each fixture mounting hole (115) includes an upper hole (1151) at the top and a lower hole (1152) at the bottom. A rotating wheel fixture (3) includes a rotating rod (31), a base (32) and an eccentric wheel (33). The top of the rotating rod (31) is clamped in the upper hole (1151) for rotation. The base (32) and the eccentric wheel (33) are arranged in the lower hole (1152). The base (32) is fixed to the bottom of the rotating rod (31). The eccentric wheel (33) is sleeved on the outside of the rotating rod (31). The eccentric wheel (33) is fixed to the rotating rod (31) by a keyway. The rotating rod (31) passes through the eccentric position of the eccentric wheel (33). When the rotating rod (31) rotates, it drives the eccentric wheel (33) to rotate eccentrically, so that the farthest end of the eccentric wheel (33) is pressed against the die cutting knife (111) for fixation.

2. A cigarette package die-cutting device according to claim 1, characterized in that: In any rotating wheel fixture (3), a protruding convex key (311) is provided on the side of the portion of the rotating rod (31) located in the lower hole (1152), and a clamping groove (331) is provided on the eccentric wheel (33) at a position corresponding to the convex key (311), the clamping groove (331) is larger than the convex key (311), and the eccentric wheel (33) slides up and down under the limiting action of the convex key (311).

3. A cigarette package die-cutting device according to claim 2, characterized in that: In the rotating wheel clamp (3) on the side of each corner knife (1112), a spring (34) is sleeved on the outer side of the rotating rod (31), one end of the spring (34) is pressed against the base (32), and the other end of the spring (34) is pressed against the eccentric wheel (33). When the corner knife (1112) is installed, the eccentric wheel (33) rotates at the top position of the convex key (311) to clamp the corner knife (1112). When the corner knife (1112) is cut and pressed against the buffer pad, it shrinks inwards, and the spring (34) is in a compressed state.

4. A cigarette package die-cutting device according to claim 3, characterized in that: The material of the outer ring of the eccentric wheel (33) is soft rubber material.

5. The cigarette package die-cutting device according to claim 3, characterized in that: In any rotating wheel fixture (3), the top of the rotating rod (31) is flush with the surface of the die-cut substrate (11), and the top of the rotating rod (31) is also provided with an inwardly recessed inner angle groove (312), and the inner angle groove (312) is used to rotate the rotating rod (31) to drive the eccentric wheel (33) to rotate, and the top of the rotating rod (31) is also provided with an inwardly recessed pointer groove (313), and the pointer groove (313) points to the farthest position of the eccentric wheel (33).

6. The cigarette package die-cutting device according to claim 3, characterized in that: A die-cutting back plate (12) is also provided on the back of the die-cutting substrate (11); the die-cutting back plate (12) is made of resin; positioning holes (114) for fixing are provided on the die-cutting substrate (11) and the die-cutting back plate (12); bolts are used in each positioning hole (114) to fix the die-cutting substrate (11) and the die-cutting back plate (12); the tool groove (113) passes through the die-cutting substrate (11) from top to bottom; and the bottom of the die-cutting knife (111) is pressed against the die-cutting back plate (12).

7. The cigarette package die-cutting device according to claim 3, characterized in that: A die-cutting groove (21) is arranged on the lower pad (2) at a position corresponding to the tool groove (113); a plurality of straight buffer pads (211) and corner buffer pads (212) are arranged at the bottom of the die-cutting groove (21); each straight buffer pad (211) is located at a straight line segment position in the die-cutting groove (21); each corner buffer pad (212) is located at a corner position in the die-cutting groove (21); each straight buffer pad (211) and corner buffer pad (212) is provided with a groove corresponding to the shape of a knife tip; during die-cutting, the knife tip of each straight knife (1111) is located in the corresponding straight buffer pad (211); and the knife tip of each corner knife (1112) is located in the corresponding corner buffer pad (212).

8. The cigarette package die-cutting device according to claim 7, characterized in that: The height of each corner buffer pad (212) is higher than the height of the straight buffer pad (211).

9. The cigarette package die-cutting device according to claim 1, characterized in that: The die-cut substrate (11) is also provided with a raised indentation line (112).

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