CN220638203U - Mounting structure of cutting assembly for paper processing - Google Patents

Abstract

The utility model discloses a mounting structure of a cutting assembly for paper processing, which comprises a plurality of upper pressing blocks, wherein the upper pressing blocks are locked at the bottom of an upper mounting groove along the length direction of the upper mounting groove through bolts, and the upper pressing blocks are tightly attached to the paper facing surface of an upper blade; a plurality of lower pressing blocks are locked at the bottom of the lower mounting groove along the length direction of the lower mounting groove through bolts, and the lower pressing blocks are clung to the paper facing surface of the lower blade. The upper blade and the lower blade are tightly pressed in the upper mounting groove of the upper blade roller and the lower mounting groove of the lower blade roller through the upper pressing block and the lower pressing block respectively, when the upper blade and the lower blade are in spiral progressive interference fit to cut paper materials, the resistance directions received by the upper blade and the lower blade are directed to the bottom directions of the upper mounting groove or the bottom directions of the lower mounting groove, and the pressing force directions of the upper blade and the lower blade are staggered due to the upper pressing block and the lower pressing block, the resistance acting on the upper blade and the lower blade is prevented from directly acting on the bolts, and the mounting stability of the upper blade and the lower blade is improved.

Description

Mounting structure of cutting assembly for paper processing

Technical Field

The utility model relates to a mounting structure of a cutting assembly for paper processing.

Background

Paper cutters are large mechanical devices for cutting paper, commonly found in offices and printing industries, and commercially available paper cutters typically cut paper stock using a cutting assembly.

The utility model provides a corrugated container board fixed length cutting device of application number CN202020616389.3 in the related art, includes brace table, backup pad, toolhead board and cutting blade, brace table upper end both sides are carved with scale first, the shaping has the platform of lapping on the brace table lateral wall, the shaping of lapping platform upper end middle part has T type spout first, be provided with T type slip table first in the T type spout first, T type slip table top welding has the backup pad, backup pad upper end middle part shaping has the backset, backup pad upper end both sides have connect positioning bolt first soon, positioning bolt first runs through the backup pad with T type slip table first, the welding of another lateral wall middle part of brace table has the support, there is the punching cylinder in support top middle part through bolted connection, the punching cylinder bottom has through bolted connection the toolhead board, toolhead board bottom both sides are provided with T type spout second, be provided with T type slip table second in the T type slip table second, T type second bottom welding has cutting blade, cutting blade upper end both sides have connect positioning bolt second soon, it is close to two side walls have two to cut on the toolhead board.

Above-mentioned cutting blade is through connecing positioning bolt direct mount on the backing plate soon, and the resistance of paper material directly acts on cutting blade when cutting blade cut-off to transmit to the certain torsional force of bolt, after long-time cutting use, the bolt takes place to rotate easily with the screw interthread, causes the bolt to become flexible, thereby causes the problem that blade installation stability is poor.

Accordingly, the present application is directed to a mounting structure for a paper processing cutting assembly that addresses one or more of the problems set forth above.

Disclosure of Invention

The utility model provides a mounting structure of a cutting assembly for paper processing, which can effectively solve the problems.

The utility model is realized in the following way:

the utility model relates to a mounting structure of a cutting assembly for paper processing, which comprises an upper cutter roller, wherein an upper mounting groove is formed in the axial offset of the upper cutter roller, and an upper blade is mounted in the upper mounting groove;

the lower cutter roll is provided with a lower mounting groove in an axial offset way, and a lower blade is arranged in the lower mounting groove;

further comprises:

the upper pressing blocks are locked on the bottom of the upper mounting groove along the length direction of the upper mounting groove through bolts, and are clung to the paper facing surface of the upper blade so as to clung to the upper blade to be mounted on the groove wall at one side of the upper mounting groove in a twisting manner, and the edge end of the upper blade extends out of the groove opening of the upper mounting groove;

the lower pressing blocks are locked at the bottom of the lower mounting groove along the length direction of the lower mounting groove through bolts, and are clung to the face of the lower blade, so that the lower blade is clung to the groove wall at one side of the upper mounting groove and the lower mounting groove, and a gap exists between the edge end of the lower blade and the notch of the lower mounting groove.

The beneficial effects of the utility model are as follows:

the upper blade and the lower blade are tightly pressed in the upper mounting groove of the upper blade roller and the lower mounting groove of the lower blade roller through the upper pressing block and the lower pressing block respectively, when the upper blade and the lower blade are in spiral progressive interference fit to cut paper materials, the resistance directions received by the upper blade and the lower blade are directed to the bottom directions of the upper mounting groove or the bottom directions of the lower mounting groove, and the pressing force directions of the upper blade and the lower blade are staggered due to the upper pressing block and the lower pressing block, the resistance acting on the upper blade and the lower blade is prevented from directly acting on the bolts, and the mounting stability of the upper blade and the lower blade is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an assembly schematic of the cutting assembly of the present utility model assembled to a paper cutter;

FIG. 2 is a perspective view showing a state that an upper blade and a lower blade are in interference fit and are cut along one end of a cut surface of a paper material and transition to the other end so as to cut the paper material;

FIG. 3 is a cross-sectional view showing the state that an upper knife roll and a lower guide roll rotate to drive an upper blade and a lower blade to be in interference fit to cut paper materials;

FIG. 4 is an enlarged schematic view of the utility model at A in FIG. 3;

FIG. 5 is an overall schematic of the upper knife roll of the present utility model;

FIG. 6 is a schematic cross-sectional view of an upper mounting groove in axial offset relationship with an upper knife roll embodying the utility model;

FIG. 7 is an overall schematic of the lower knife roll of the present utility model;

FIG. 8 is a schematic cross-sectional view of a lower mounting groove in axial offset relationship with a lower knife roll embodying the utility model;

FIG. 9 is a schematic view of the structure of the upper blade of the present utility model;

FIG. 10 is a schematic view of the structure of the lower blade of the present utility model;

FIG. 11 is a schematic view of the structure of the upper press block of the present utility model;

fig. 12 is a schematic view of the structure of the press block of the present utility model.

The drawings are identified as follows:

10. a knife roller; 11. an upper mounting groove;

20. a cutter roll; 21. a lower mounting groove;

30. an upper blade; 31. the upper blade faces the paper; 32. a backing paper surface; 33. the edge end of the upper blade; 34. the mounting end of the upper blade; 341. an upper guide surface; 342. an upper support surface; 35. a cutter surface is arranged; 36. a cutter feeding cavity; 37. a working area; 38. a secure area;

40. a lower blade; 41. the paper facing surface of the lower blade; 42. a backing paper surface; 43. the edge end of the lower blade; 44. the mounting end of the lower blade; 441. a lower guide surface; 442. a lower support surface; 45. a cutter surface is arranged; 46. a cutter-releasing cavity is arranged; 47. a working area; 48. a secure area;

50. pressing into blocks; 51. an upper abutment surface; 52. a tightening surface is arranged; 53. an upper mounting hole; 531. a first upper mounting hole; 532. a second upper mounting hole;

60. pressing the block; 61. a lower abutment surface; 62. a lower attaching surface; 63. a lower mounting hole; 631. a first lower mounting hole; 632. a second lower mounting hole; 64. a cutter relieving groove;

70. a paper passage;

80. the balance;

90. a frame.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1, 2 and 3, a cutting assembly for paper processing includes a frame 90, an upper blade 30, a lower blade 40 and a mounting structure, wherein the mounting structure includes an upper cutter roll 10 and a lower cutter roll 20 mounted on the frame 90, and a motor (not shown) for controlling the rotation of the upper cutter roll 10 is provided on the frame 90; the length of the axes of the upper knife roll 10 and the lower knife roll 20 is equal, and the length of the upper blade 30 and the lower blade 40 is equal; the upper cutter roller 10 and the lower cutter roller 20 are spaced apart to form a paper passing passage 70 through which paper passes, and the upper cutter roller 10 and the lower cutter roller 20 are rotated in the same direction.

As shown in fig. 1 and 2, an upper mounting groove 11 for mounting an upper blade 30 closely to a bending is formed in the circumferential direction of the upper knife roll 10 in a axially offset manner, and the edge end 33 of the upper blade 30 extends out of the notch of the upper mounting groove 11; the lower cutter roll 20 is axially offset from the circumference to provide a lower mounting groove 21 for the lower cutter blade 40 to be mounted tightly against the twist, the lower cutter blade 40 is positioned in the lower mounting groove 21, and a clearance exists between the edge end 43 of the lower cutter blade 40 and the notch of the lower mounting groove 21.

As shown in fig. 2, 3 and 4, the upper blade 30 and the lower blade 40 are in spiral progressive interference fit at the paper passing channel 70 to cut the paper, when the paper is cut at the paper passing channel 70, the upper blade 30 rotates upwards along the rotation tangential line of the upper knife roll 10 to pick the cutting surface of the paper at the front end in the transmission direction, and the lower blade 40 rotates downwards along the rotation tangential line of the lower knife roll 20 to pick the cutting surface of the paper at the rear end in the transmission direction; it is noted here that the upper blade 30 and the lower blade 40 are only in interference fit at the tangent point to cut the stock.

When cutting paper materials, the upper knife roll 10 and the lower knife roll 20 synchronously rotate, the paper materials are cut from one end of the tangential direction to the other end, and the paper materials can be pushed into a flat tangential plane perpendicular to the paper material conveying direction by controlling the conveying speed of the paper materials and the rotating speeds of the upper blade 30 and the lower blade 40.

Compared with the prior art, the cutting mode of the flat cutting is more labor-saving, so that the paper with flat section can be obtained, in the process, the upper blade 30 and the lower blade 40 respectively carry out rotary picking and deburring on burrs on the section of each paper at the front end and the rear end, the operation of removing burrs needed by paper processing is simplified, and the processing quality of the paper is improved.

As shown in fig. 5 to 8, the upper blade 30 is disposed at an angle to the axis Y of the upper cutter roll 10 on the side of the upper mounting groove 11, and the lower blade 40 is disposed at the same angle to the axis Y of the lower cutter roll 20 on the side of the lower mounting groove 21, and is disposed in the range of 12 ° to 25 °.

If the angle is smaller than 12 degrees, the situation that the paper material does not move to a preset cutting point and the cutting action of the cutting assembly is finished is caused, so that the paper material is wasted; if the angle is greater than 25 °, the bending angle applied when the upper blade 30 and the lower blade 40 are mounted in the upper mounting groove 11 and the lower mounting groove 21 is too large, and the rigidity strength of the upper blade is weakened, which is unfavorable for the long-term use of the upper blade 30 and the lower blade 40, so that the angle is set to be in the range of 12 ° to 25 °, and the upper blade 30 and the lower blade 40 can have good rigidity strength under the condition that the blades meet the normal cutting processing requirement, and the service lives of the upper blade 30 and the lower blade 40 are prolonged.

The structure of the upper blade 30 and the lower blade 40 will be described in detail below by defining the side facing the paper as facing surface and the side facing away from the paper as backing surface during cutting of the upper blade 30 and the lower blade 40:

as shown in fig. 5, 6 and 9, the upper blade 30 has a mounting end 34 integrally formed with the blade end 33, the mounting end 34 of the upper blade 30 extends into the upper mounting groove 11, and the twisting fit of the upper blade 30 to the upper blade roller 10 is achieved by tightly fitting the back paper surface 32 of the upper blade 30 to the groove wall of the upper mounting groove 11, so that the twisting angle of the upper blade 30 is maintained within a range of 12 ° to 25 °.

As shown in fig. 5, 6 and 9, the end face of the mounting end 34 of the upper blade 30 adjacent to the backing paper surface 32 abuts against the bottom of the upper mounting groove 11, and the cross-sectional area of the mounting end 34 of the upper blade 30 is larger than the cross-sectional area of the edge end 33 of the upper blade 30, so that when the upper blade 30 is assembled in the upper mounting groove 11, the bottom of the upper mounting groove 11 can provide a larger supporting force for the upper blade 30, so that the upper blade 30 is decomposed to receive the resistance exerted by the paper when cutting the paper, and the mounting stability of the upper blade 30 is improved.

As shown in fig. 9, the blade edge 33 of the upper blade 30 is composed of a paper facing surface 31 of the blade edge 33 and an upper blade surface 35 adjacent to the paper facing surface 31, wherein an angle between the upper blade surface 35 and the paper facing surface 31 of the blade edge 33 is β, and an angle between the upper blade surface 35 and the back paper surface 32 is γ; the included angle β is preferably 60 ° and the included angle γ is preferably 120 °.

When the paper stock is cut, the paper stock is firstly stressed by the blade edge 33, and then the paper stock is cut, at the moment, the upper blade 30 forms an included angle beta to receive the stress of the paper stock, and the stress is transmitted to the angle gamma of the upper blade 30, and the angle gamma is larger than beta and is an obtuse angle, so that the angle gamma of the upper blade 30 can decompose and bear the stress of the paper stock received by the part beta. By adopting the angle to process the upper blade 30, the upper blade 30 can be ensured to have the sharpness for cutting off paper materials, and simultaneously has good structural strength, thereby greatly prolonging the service life of the upper blade 30.

As shown in fig. 7, 8 and 10, the lower blade 40 has a mounting end 44 integrally formed with the blade edge 43, the entire lower blade 40 is positioned in the mounting groove, and the lower blade 40 is twisted and engaged with the lower blade roller 20 by fitting the back surface of the lower blade 40 against the wall of the lower mounting groove 21 so that the twist angle of the lower blade 40 is maintained within the same range of 12 ° to 25 ° as the twist angle of the upper blade 30.

As shown in fig. 10, the end surface of the mounting end 44 of the lower blade 40 adjacent to the backing paper surface 42 abuts against the bottom of the lower mounting groove 21, the cross-sectional area of the mounting end 44 of the lower blade 40 is larger than that of the cutting edge end 43, and the cutting edge end of the lower blade 40 receives larger paper stress during cutting, so that the bottom of the lower mounting groove 21 can provide larger supporting force for the lower blade 40 through the mounting end of the lower blade 40, and the mounting stability of the lower blade 40 is improved.

As shown in fig. 10, the blade edge 43 of the lower blade 40 is composed of a paper facing surface 41 of the blade edge 43 and a lower blade surface 45 adjacent to the paper facing surface 41, the angle between the lower blade surface 45 and the paper facing surface 41 of the blade edge 43 is epsilon, and the angle between the upper blade surface 45 and the back paper surface 42 is chi; in this embodiment, the included angle ε is preferably 50 °, and the included angle χ is preferably 110 °. The processing of the upper blade 30 by the angle can ensure the sharpness of the lower blade 40 for cutting off paper stock, and simultaneously has good structural strength, thereby greatly prolonging the service life of the lower blade 40.

Because when the paper material is transmitted, as shown in fig. 3 and 4, the surface of the lower cutter roll 20 is tightly attached to the surface of the lower cutter roll 20 to be transmitted along the transmission direction, therefore, the paper material cutting device adopts a mode that the upper cutter roll 10 is partially extended by the upper cutter roll 30 and the lower cutter roll 20 is hidden by the lower cutter roll 40 to meet the paper material cutting requirement, however, in the actual cutting process, the paper material is cut by the upper cutter roll 30 and the lower cutter roll 40 in an interference fit mode, if the interference fit distance between the upper cutter roll and the lower cutter roll is too large, the situation that excessive collision and serious abrasion occur between the upper cutter roll 30 and the lower cutter roll 40 in the cutting process is easily caused, and the problem of large noise is accompanied.

To solve the above problem, as shown in fig. 9 and 10, the edge end 33 of the upper blade 30 faces the paper surface 31 and the mounting end 34 of the upper blade 30 faces the paper surface 31 to form an upper cutter back cavity 36 which faces the lower blade 40 and has an angle α, and the edge end 43 of the lower blade 40 faces the paper surface 41 and the mounting end 44 of the lower blade 40 faces the paper surface 41 to form a lower cutter back cavity 46 which faces the upper blade 30 and has an angle θ; preferably, the angle α is 170 ° and the angle θ is 150 °

The edge end 33 of the upper blade 30 faces the paper surface 31 and the edge end 43 of the lower blade 40 faces the paper surface 41 in an interference fit manner to cut paper, in the process, the edge end 33 of the upper blade 30 stretches into the lower mounting groove 21, the upper cutter yielding cavity 36 and the lower cutter yielding cavity 46 respectively avoid the lower blade 40 and the upper blade 30, and the interference interval between the upper blade 30 and the lower blade 40 is kept at 1mm because the included angle alpha is 170 degrees and the included angle theta is 150 degrees, so that the collision and abrasion between the upper blade 30 and the lower blade 40 are improved, and the problem of loud noise in the cutting process is solved.

As shown in fig. 9 and 10, the edge end 33 of the upper blade 30 facing the paper surface 31 is composed of a working area 37 and a safety area 38 which are adjacently arranged, the length of the working area is H, and the length of the safety area is H; the edge 43 of the lower blade 40 facing the paper 41 is composed of a working area 47 and a safety area 48 which are adjacently arranged, the length of the working area 47 is L, and the length of the safety area 48 is L.

When the lower blade 40 is in interference fit with the upper blade 30 to cut paper, the displacement travel of the lower blade 40 on the paper facing surface 31 of the edge end 33 of the upper blade 30 is in the working area 37 and is isolated from the safety area 38 on the paper facing surface 31 of the edge end 33 of the upper blade 30, so that the collision between the lower blade 40 and the paper facing surface 31 of the mounting end 34 of the upper blade 30 can be avoided, the abrasion probability of the upper blade 30 in the process is reduced, and the service lives of the upper blade 30 and the lower blade 40 are prolonged. The working areas on the upper and lower blades 30, 40 are similar to the safety area principle, and thus the working area 47 and the safety area 48 on the lower blade 40 will not be described again.

As shown in fig. 4, the upper mounting groove 11 and the lower mounting groove 21 are formed by cutting the grooving machine according to preset parameters and tracks, and due to limitation of machining precision, a certain margin 80 is usually reserved at the joint of the groove walls and the groove bottoms of the upper mounting groove 11 and the lower mounting groove 21.

In order to enable the upper blade 30 and the lower blade 40 to be mounted in the upper mounting groove 11 and the lower mounting groove 21 in a fitting manner, as shown in fig. 9 and 10, an upper guide surface 341 inclined downward from the back surface 32 to the facing surface 31 is provided on the end surface of the upper blade 30 where the mounting end 34 is adjacent to the back surface 32, and the upper guide surface 341 is for fitting the end surface of the margin 80 located in the upper mounting groove 11; a lower guide surface 441 inclined downward from the back surface 42 to the front surface 41 is provided on the end surface of the back surface 42 adjacent to the mounting end 44 of the lower blade 40, and the lower guide surface 441 is bonded to the end surface of the margin 80 located in the upper mounting groove 11.

By providing the upper guide surface 341 and the lower guide surface 441, it is possible to ensure that the upper blade 30 and the lower blade 40 can be attached to the inner walls of the upper mounting groove 11 and the lower mounting groove 21, respectively, and to improve the mounting strength of the upper blade 30 and the lower blade 40.

As shown in fig. 7, 8 and 10, the end surface of the mounting end 44 of the lower blade 40, which is close to the paper facing surface 41, forms a lower supporting surface 442, the lower supporting surface 442 is attached to the bottom of the lower mounting groove 21, and the bottom of the lower mounting groove 21 is supported by the lower supporting surface 442, so that the force transmitted from the cutting edge end 43 of the lower blade 40 to the mounting end 44 of the lower blade 40 is transmitted to the decomposed part, thereby improving the mounting stability of the lower blade 40 and prolonging the service life of the lower blade 40.

As shown in fig. 5, 6 and 9, the mounting end 34 of the upper blade 30 is formed with an upper support surface 342 near the end surface facing the paper 31, and the upper support surface 342 is bonded to the bottom of the upper mounting groove 11, which can also improve the mounting stability of the upper blade 30.

When cutting, the upper blade 30 and the lower blade 40 are in interference fit with each other, and the paper materials are partially pushed into the lower mounting groove 21 together, so that the lower blade 40 is not only pressed by the upper blade 30, but also additionally bears the stress of the paper materials, and therefore, the lower blade 40 is more stressed and is more prone to abrasion than the upper blade 30.

To solve the above problem, as shown in fig. 9 and 10, the length D of the lower supporting surface 442 is greater than the length D of the upper supporting surface 342, so that the lower supporting surface 442 can provide more support for the lower blade 40 than the upper supporting surface 342, thereby further improving the mounting stability of the lower blade 40.

As shown in fig. 5 and 6, the mounting structure further includes a plurality of upper press blocks 50 arranged along the extending direction of the upper mounting groove 11 to mount the upper blade 30 on the groove wall by being tightly bent, and a plurality of lower press blocks 60 arranged along the extending direction of the lower mounting groove 21 to mount the lower blade 40 under the groove wall by being tightly bent, wherein the plurality of upper press blocks 50 are arranged at equal intervals along the length direction of the upper mounting groove 11; and a plurality of the lower pressing blocks 60 are disposed at equal intervals along the length direction of the lower mounting groove 21.

Specifically, as shown in fig. 5, 6 and 11, the upper pressing block 50 has an upper pressing surface 51 for pressing the mounting end 34 of the upper blade 30 against the paper surface 31 to press the upper blade 30 against the groove wall of the upper mounting groove 11, and one side of the upper pressing block 50 opposite to the upper pressing surface 51 has an upper pressing surface 52 for pressing against the groove wall of the side of the upper mounting groove 11 away from the upper blade 30.

The upper pressing block 50 is screwed on the bottom of the upper mounting groove 11 through bolts (not shown), at this time, the upper abutting surface 51 of the upper pressing block 50 is abutted against the paper facing surface 31 of the mounting end 34 of the upper blade 30, so that the upper blade 30 abuts against the wall of the upper mounting groove 11, and at the same time, the upper abutting surface 52 of the upper pressing block 50 is abutted against the wall of the side of the upper mounting groove 11, which is far away from the upper blade 30; because the upper blade 30 is mounted in the upper mounting groove 11 by the abutting force of the upper pressing block 50, the acting force direction of the paper stock to the upper blade 30 and the screwing direction of the bolt are staggered, so that the possibility of loosening the bolt during cutting is reduced, and because the upper blade 30 and the upper pressing block 50 are arranged separately, the acting force of the paper stock directly applies force to the upper blade 30 rather than the upper pressing block 50, the probability of loosening the bolt is further reduced, and the mounting stability of the upper blade 30 is improved.

Further, as shown in fig. 5, 6 and 11, an included angle ψ is formed between a groove wall on one side of the upper mounting groove 11 away from the upper blade 30 and a groove elevation line E of the upper mounting groove 11, the included angle ψ is in a range of 7 ° to 15 °, and the upper mounting groove 11 is processed by adopting the above parameters, so that the contact area between the upper attaching surface 52 of the upper pressing block 50 and the groove wall on one side of the upper mounting groove 11 away from the upper blade 30 can be increased under the same condition, and the pressing force of the upper pressing block 50 on the upper blade 30 can be increased, so that the upper blade 30 can be more stably mounted in the upper mounting groove 11.

As shown in fig. 11, the upper pressing block 50 is provided with an upper mounting hole 53 through which a bolt passes, the upper mounting hole 53 includes a first upper mounting hole 531 and a second upper mounting hole 532 through which the bolt passes in sequence, a step surface against which a nut portion of the bolt abuts is formed between the first upper mounting hole 531 and the second upper mounting hole 532, the first upper mounting hole 531 and the second upper mounting hole 532 are elongated slot holes, and the bolt can move forward or backward in the upper mounting hole 53 along a direction perpendicular to a central axis of the upper mounting hole 53.

When the upper blade 30 is installed, the installation end 34 of the upper blade 30 extends into the upper installation groove 11, the back paper surface 32 of the upper blade 30 is jointed with a groove wall of the upper installation groove 11, the upper guide surface 341 is jointed with the end surface of the allowance 80 in the upper installation groove 11, the upper support surface 342 is jointed with the groove bottom of the upper installation groove 11, then a bolt passes through the upper installation hole 53, and a screw is screwed, so that the upper propping surface 51 of the upper pressing block 50 is jointed with the paper facing surface 31 of the installation end 34 of the upper blade 30, and along with the gradual screwing of the bolt, the back paper surface 32 of the upper blade 30 is synchronously stuck with the groove wall of the upper installation groove 11, and as the first upper installation hole 531 and the second upper installation hole 532 are long groove holes, the bolt can move forwards or backwards along the direction vertical to the central axis of the upper installation hole 53 in the screwing process, so that the upper pressing block 50 is tightly pressed against the upper blade 30, and the installation stability of the upper blade 30 is further improved.

Specifically, as shown in fig. 7, 8 and 12, the lower pressing block 60 has a lower pressing surface 61 for pressing the mounting end 44 of the lower blade 40 against the paper surface 41 to press the lower blade 40 against the groove wall of the lower mounting groove 21, and a lower pressing surface 62 for pressing the lower blade against the groove wall of the side of the lower mounting groove 21 away from the lower blade 40 is provided on the side of the lower pressing block 60 opposite to the lower pressing surface 61.

The lower pressing block 60 is screwed on the bottom of the lower mounting groove 21 through bolts (not shown), at this time, the lower abutting surface 61 of the lower pressing block 60 abuts against the paper facing surface 41 of the mounting end 44 of the lower blade 40, so that the lower blade 40 abuts against one groove wall of the lower mounting groove 21, and at the same time, the lower abutting surface 62 of the lower pressing block 60 abuts against the groove wall of the side, away from the lower blade 40, of the lower mounting groove 21; because the lower blade 40 is mounted in the lower mounting groove 21 by the abutting force of the lower pressing block 60, the acting force direction of the paper stock to the lower blade 40 and the screwing direction of the bolt are staggered, so that the possibility of loosening the bolt during cutting is reduced, and because the lower blade 40 and the lower pressing block 60 are arranged separately, the acting force of the paper stock directly applies force to the lower blade 40 instead of the lower pressing block 60, the probability of loosening the bolt is further reduced, and the mounting stability of the lower blade 40 is improved.

Further, as shown in fig. 7, 8 and 12, an included angle σ is formed between the groove wall on one side of the lower mounting groove 21 far from the lower blade 40 and the groove elevation line e of the lower mounting groove 21, and the included angle σ is within 7 ° to 15 °, and by adopting the above parameters to process the lower mounting groove 21, the contact area between the lower attaching surface 62 of the lower blade 40 and the groove wall on one side of the lower mounting groove 21 far from the lower blade 40 can be increased under the same condition, and the pressing force of the lower pressing block 60 on the lower blade 40 can be increased, so that the lower blade 40 can be more stably mounted in the lower mounting groove 21.

As shown in fig. 12, the lower pressing block 60 is provided with a lower mounting hole 63 through which a bolt passes, the lower mounting hole 63 includes a first lower mounting hole 631 and a second lower mounting hole 632 through which the bolt passes in sequence, a step surface against which a bolt and nut portion abuts is formed between the first lower mounting hole 631 and the second lower mounting hole 632, the first lower mounting hole 631 and the second lower mounting hole 632 are elongated slot holes, and the bolt can move forward or backward in the direction perpendicular to the central axis of the lower mounting hole 63 in the lower mounting hole 63.

When the lower blade 40 is installed, the installation end 44 of the lower blade 40 extends into the lower installation groove 21, the back paper surface 42 of the lower blade 40 is attached to a groove wall of the lower installation groove 21, the lower guide surface 441 is attached to the end surface of the allowance 80 in the lower installation groove 21, the lower support surface 442 is attached to the groove bottom of the lower installation groove 21, then a bolt passes through the lower installation hole 63, the bolt is screwed, the abutting surface of the lower pressing block 60 is attached to the paper facing surface 41 of the installation end 44 of the lower blade 40, the back paper surface 42 of the lower blade 40 is synchronously attached to the groove wall of the lower installation groove 21 along with the gradual screwing of the bolt, and the bolt can move forwards or backwards along the direction perpendicular to the central axis of the lower installation hole 63 in the screwing process, so that the lower pressing block 60 is tightly pressed against the lower blade 40, and the installation stability of the lower blade 40 is further improved.

As shown in fig. 4 and 12, the lower pressing block 60 is provided with a cutter-retracting groove 64 for retracting the upper blade 30 adjacent to the lower pressing block 61, and when cutting, the rotary cutting strokes of the upper blade 30 are all positioned in the cutter-retracting groove 64, so that the upper blade 30 is prevented from colliding with the lower pressing block 60 when cutting, and the safety of the cutting process is improved.

The application discloses a paper processing is with cutting subassembly application method, includes the following steps:

s1: transferring the paper stock to the paper passing gap between the upper knife roll 10 and the lower knife roll 20;

s2: the upper knife roll 10 and the lower knife roll 20 rotate, and the upper knife blade 30 and the lower knife blade 40 are in interference fit at a tangent point to cut paper materials;

s3: the cutting points of the upper blade 30 and the lower blade 40 on the cut surface of the paper stock are cut from one end to the other end in a transition manner along the cut surface of the paper stock to finish cutting the paper stock, and in the process, the upper blade 30 and the lower blade 40 rotate to pick burrs of the cut surface of the paper stock at the front end and the rear end so as to remove burrs of the cut surface of the paper stock.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. The utility model provides a mounting structure of cutting assembly for paper processing which characterized in that: comprising

An upper knife roll (10), wherein an upper mounting groove (11) is formed in the upper knife roll (10) in an axial offset manner, and an upper blade (30) is arranged in the upper mounting groove (11);

a lower cutter roll (20), wherein a lower mounting groove (21) is axially offset on the lower cutter roll (20), and a lower blade (40) is arranged in the lower mounting groove (21);

further comprises:

the upper pressing blocks (50) are locked on the bottom of the upper mounting groove (11) along the length direction of the upper mounting groove (11) through bolts, the upper pressing blocks (50) are clung to the paper facing surface (31) of the upper blade (30) so as to clung to the bending and twisting of the upper blade (30) to be mounted on the groove wall at one side of the upper mounting groove (11), and the cutting edge ends (33) of the upper blade (30) extend out of the groove opening of the upper mounting groove (11);

the lower pressing blocks (60) are locked at the bottom of the lower mounting groove (21) along the length direction of the lower mounting groove (21) through bolts, the lower pressing blocks (60) are tightly attached to a paper facing surface (41) of the lower blade (40) so as to tightly attach the lower blade (40) to the groove wall at one side of the upper mounting groove (21) and the groove wall at one side of the lower mounting groove, and a gap exists between the cutting edge end (43) of the lower blade (40) and the groove opening of the lower mounting groove (21).

2. The mounting structure of a cutting assembly for paper processing according to claim 1, wherein: the upper blade (30) clings to the groove wall mounting side of the upper mounting groove (11) and forms an angle with the axis Y of the upper cutter roller (10), and the lower blade (40) clings to the groove wall mounting side of the lower mounting groove (21) and forms the same angle with the axis Y of the lower cutter roller (20) and is in the range of 12-25 degrees.

3. The mounting structure of a cutting assembly for paper processing according to claim 1, wherein: the upper pressing block (50) is provided with an upper propping surface (51) for pressing the paper facing surface (31) at the mounting end (34) of the upper blade (30) so as to prop the upper blade (30) against the groove wall of the upper mounting groove (11), and one side of the upper pressing block (50) opposite to the upper propping surface (51) is provided with an upper propping surface (52) which is propped against the groove wall of the side, far away from the upper blade (30), of the upper mounting groove (11); the lower pressing block (60) is provided with a lower abutting surface (61) for pressing the paper facing surface (41) at the mounting end (44) of the lower blade (40) so as to abut the lower blade (40) on the groove wall of the lower mounting groove (21), and one side of the lower pressing block (60) opposite to the lower abutting surface (61) is provided with a lower abutting surface (62) which is abutted against the groove wall of the side, far away from the lower blade (40), of the lower mounting groove (21).

4. A mounting structure of a cutting assembly for paper processing according to claim 3, wherein: an included angle phi is formed between the groove wall of one side of the upper mounting groove (11) far away from the upper blade (30) and a groove elevation line E of the upper mounting groove (11), and the included angle phi is in the range of 7-15 degrees.

5. A mounting structure of a cutting assembly for paper processing according to claim 3, wherein: an included angle sigma is formed between the groove wall of one side of the lower mounting groove (21) far away from the lower blade (40) and a groove altitude line e of the lower mounting groove (21), and the included angle sigma ranges from 7 degrees to 15 degrees.

6. The mounting structure of a cutting assembly for paper processing according to claim 1, wherein: an upper mounting hole (53) for a bolt to penetrate is formed in the upper pressing block (50), the upper mounting hole (53) comprises a first upper mounting hole (531) and a second upper mounting hole (532) for the bolt to sequentially penetrate, a step surface for the bolt and nut part to tightly abut against is formed between the first upper mounting hole (531) and the second upper mounting hole (532), the first upper mounting hole (531) and the second upper mounting hole (532) are long slot holes, and the bolt can move forwards or backwards in the upper mounting hole (53) along the direction perpendicular to the central axis of the upper mounting hole (53).

7. The mounting structure of a cutting assembly for paper processing according to claim 1, wherein: lower mounting holes (63) for bolts to penetrate are formed in the lower pressing block (60), the lower mounting holes (63) comprise first lower mounting holes (631) and second lower mounting holes (632) for bolts to sequentially penetrate, step surfaces for the bolt nut parts to tightly abut against are formed between the first lower mounting holes (631) and the second lower mounting holes (632), the first lower mounting holes (631) and the second lower mounting holes (632) are long groove holes, and bolts can move forwards or backwards in the lower mounting holes (63) along the direction perpendicular to the central axis of the lower mounting holes (63).

8. The mounting structure of a cutting assembly for paper processing according to claim 1, wherein: the lower pressing block (60) is adjacent to the lower abutting surface (61) and is provided with a cutter relieving groove (64) for giving way to the upper cutter blade (30).