CN110434935B

CN110434935B - Friction cutting structure

Info

Publication number: CN110434935B
Application number: CN201910906412.4A
Authority: CN
Inventors: 程新峰; 李建; 潘增铭
Original assignee: Shenzhen Kangxinlong Technology Co ltd
Current assignee: Shenzhen Kangxinlong Industrial Co.,Ltd.
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2024-07-09
Anticipated expiration: 2039-09-24
Also published as: CN110434935A

Abstract

The invention discloses a friction cutting structure, which comprises a lower shell and an upper shell which is matched with the lower shell, wherein a group of auxiliary roller groups and a group of transmission roller groups are arranged in the lower shell, and rolling cutting movement between the lower shell and an object to be cut is completed through the two groups of roller groups; the output end of the transmission roller group is provided with a friction cutting mechanism, the outer side surface of the bottom of the lower shell is provided with a detachable guide plate, and objects to be cut are guided into the friction cutting mechanism for cutting by moving the lower shell. The paper cutting machine can cut paper rapidly, is safe, does not hurt hands, is quick, simple and safe to cut paper, is convenient to carry, has a small volume, can permanently use the blade, has no blade design due to the friction extrusion function between the circular blade and the right-angle blade, has no blade abrasion phenomenon, is safer in built-in blade and blade-free design, does not hurt hands, does not hurt a tabletop, and is safe and reliable.

Description

Friction cutting structure

Technical Field

The invention relates to the field of paper cutting, in particular to a friction cutting structure.

Background

The cutting of traditional paper or other materials is generally carried out by adopting a blade, the blade is ground with a blade, when the paper is cut on a plane by adopting a blade cutting mode, the blade can damage a tabletop to produce scratches, meanwhile, the blade can bring accidental injury to a user, and in addition, the blade is easy to wear after being used for a long time, needs to be polished frequently and is very inconvenient.

Disclosure of Invention

The invention aims to solve the technical problem of a friction cutting structure, and a brand-new friction extrusion cutting mode is adopted, so that a plurality of defects in the prior art can be effectively solved.

The invention is realized by the following technical scheme: the device comprises a lower shell and an upper shell which is matched with the lower shell, wherein a group of auxiliary roller groups and a group of transmission roller groups are arranged in the lower shell, and rolling cutting movement between the lower shell and an object to be cut is completed through the two groups of roller groups; the output end of the transmission roller group is provided with a friction cutting mechanism, the outer side surface of the bottom of the lower shell is provided with a detachable guide plate, objects to be cut are guided into the friction cutting mechanism to be cut by moving the lower shell, and the transmission roller group is a preferable technical scheme; the transmission roller group is fixedly arranged on a first support on the lower shell, and the first wear-resistant gasket is supported and fixed in a first U-shaped groove of the first support. As the preferable technical scheme, be provided with an intermediate drive mechanism between transmission roller train and the friction cutting mechanism, intermediate drive mechanism includes connecting gear, second fixed axle and second wear-resisting gasket, the second fixed axle passes connecting gear and stretches out in connecting gear's both sides, and whole intermediate drive mechanism installs on the second support on the inferior valve, and the second wear-resisting gasket is installed at the second fixed axle stretch out the end and is supported and fix in the second U type inslot of second support, connecting gear and power gear meshing transmission.

As the preferable technical scheme, friction cutting mechanism includes blade gear, third fixed axle, third wear-resisting gasket, wear-resisting location gasket and right angle cutting blade, and wear-resisting location gasket cartridge is on the bellying on the right angle cutting blade, has a first shaft hole in the middle of the bellying, and it sets up to the second shaft hole on the wear-resisting location gasket that it is right-angled, one side of blade gear is provided with a circular blade, and the third fixed axle passes blade gear, wear-resisting location gasket and right angle cutting blade and installs in the third U type inslot on the third support, supports on the third support and installs a third wear-resisting gasket, and the third fixed axle passes the third wear-resisting gasket, circular blade one side and right angle cutting blade friction extrusion contact, and the blade gear meshes the transmission with intermediate drive mechanism's connecting gear, rotates through connecting gear and drives circular blade and rotate and extrude cutting paper with the right angle cutting blade.

As an optimal technical scheme, the friction cutting mechanism is further provided with an upper limiting mechanism, a lower limiting mechanism and a buffering and yielding mechanism.

As the preferable technical scheme, upper and lower stop gear includes spacing gasket and a lower spacing gasket, lower spacing gasket fixed mounting is in the bottom of spacing gasket, go up spacing gasket one side and pass through screw fixed mounting on the boss of inferior valve, right angle cutting blade is located the bottom of spacing gasket down, compresses tightly right angle cutting blade through spacing gasket down and restrict its upper and lower face.

As the preferable technical scheme, the buffering and yielding mechanism comprises a gap adjusting rod, wherein the gap adjusting rod is a metal elastic thin rod, one end of the gap adjusting rod is inserted into a small hole of the right-angle cutting blade, the other end of the gap adjusting rod is clamped on a fixed convex column on the lower shell, different paper thicknesses are adapted through the gap adjusting rod, and then the gap between the right-angle cutting blade and the round blade is adjusted.

As the preferable technical scheme, the guide plate is installed in the bottom buckling position of the right-angle cutting blade in a buckling and dismounting mode, the guide plate extends out of the lower end face of the lower shell, a paper guide cavity is formed between the protruding face of the guide plate and the bottom face of the lower shell, and an inclined guide part is arranged on one side of the paper guide cavity.

As the preferable technical scheme, the auxiliary roller set comprises two auxiliary rollers, a connecting wheel sleeve, a second shaft sleeve, a fourth fixed shaft and a fourth wear-resistant gasket, wherein the fourth fixed shaft penetrates through the connecting wheel sleeve and extends out of the auxiliary rollers through the second shaft sleeve, the second shaft sleeve is embedded into the auxiliary rollers, and the outer part of the fourth fixed shaft is fixedly supported in a fourth U-shaped groove on a fourth bracket through the fourth wear-resistant gasket.

As the preferable technical scheme, the lower shell and the upper shell are fixedly assembled through screws, a wheel groove for the roller to pass through is formed in the lower shell, and the roller passes through the wheel groove and extends out of the bottom of the lower shell.

The beneficial effects of the invention are as follows: the paper cutting machine can realize rapid paper cutting, is safe and free from hurting hands, is rapid, simple and safe, and is convenient to carry and small in volume compared with the traditional paper cutting machine; the blade can be permanently used, and the cutting principle is realized by the friction extrusion function between the circular blade and the right-angle blade; the design without the blade has no abrasion blade phenomenon, the built-in blade and the design without the blade are safer, the hand is not injured, the desktop is not injured, and the safety and the reliability are realized.

The paper cutter is convenient and practical, and the cutting principle of traditional paper is overturned by the paper cutter which is necessary for students, families, offices and gift packages; the operation is simple, the hand is not injured safely, children over 3 years old can use the paper, and the paper is cut with ease; paper with different thicknesses can be cut, the cutting clearance of the paper cutter is automatically adjusted, the self-adaptive paper thickness is cut, lines with any shapes can be cut, and the cut paper has no burrs.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of the present invention; FIG. 2 is a schematic view of the overall assembly of the present invention; FIG. 3 is a schematic cutting view of the friction cutting mechanism of the present invention; FIG. 4 is a schematic cut-away view of another view of the friction cutting mechanism of the present invention; FIG. 5 is a schematic view of the assembly of a right angle cutting blade and guide plate of the present invention; FIG. 6 is an assembled schematic view of the upper and lower limiting mechanism of the present invention; FIG. 7 is a schematic diagram illustrating the assembly of the buffer and yielding mechanism and the right angle cutting blade according to the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.

In the description of the present invention, it should be understood that the terms "one end," "the other end," "the outer side," "the upper," "the inner side," "the horizontal," "coaxial," "the center," "the end," "the length," "the outer end," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Terms such as "upper," "lower," and the like used herein to refer to a spatially relative position are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "coupled," "connected," "plugged," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 and 2, the paper cutting machine comprises a lower shell 28 and an upper shell 1 which is matched with the lower shell, wherein a group of auxiliary roller groups and a group of transmission roller groups are arranged in the lower shell 28, and rolling cutting movement between the lower shell and paper is completed through the two groups of roller groups; the output end of the transmission roller group is provided with a friction cutting mechanism, the outer side surface of the bottom of the lower shell is provided with a detachable guide plate 29, and paper sheets to be cut are guided to enter the friction cutting mechanism for cutting by moving the lower shell 28.

As shown in fig. 1, the transmission roller group comprises a hollow power shaft 2, a power gear 32 is arranged outside the power shaft 2, a first fixed shaft 3 is arranged in the middle of the power shaft 2 in a penetrating way, the first fixed shaft 3 penetrates through the power shaft 2 to extend out of two sides, and a transmission roller 5 is respectively arranged at two sides of the extending end of the first fixed shaft; the middle of the transmission roller 5 is provided with a first shaft sleeve 4, the first fixed shaft 3 passes through the first shaft sleeve 4 and the transmission roller 5 and extends out of the transmission roller 5, the extending end of the first fixed shaft 3 is sleeved with a first wear-resistant gasket 6, the whole transmission roller set is fixedly arranged on a first bracket on a lower shell 28, and the first wear-resistant gasket 6 is supported and fixed in a first U-shaped groove of the first bracket. An intermediate transmission mechanism is arranged between the transmission roller group and the friction cutting mechanism and comprises a connecting gear 14, a second fixed shaft 8 and a second wear-resistant gasket 7, the second fixed shaft 8 penetrates through the connecting gear 14 and extends out of two sides of the connecting gear 14, the whole intermediate transmission mechanism is arranged on a second support on the lower shell, the second wear-resistant gasket 7 is arranged at the extending end of the second fixed shaft and is supported and fixed in a second U-shaped groove of the second support, and the connecting gear 14 is meshed with the power gear 32 for transmission.

As shown in fig. 1, 3 and 4, the friction cutting mechanism comprises a blade gear 11, a third fixed shaft 9, a third wear-resistant gasket 10, a wear-resistant positioning gasket 16 and a right-angle cutting blade 19, wherein the wear-resistant positioning gasket 16 is inserted on a protruding part 52 on the right-angle cutting blade 19, a first shaft hole 51 is arranged in the middle of the protruding part 52 and is opposite to a second shaft hole on the wear-resistant positioning gasket 16, one side of the blade gear 11 is provided with a circular blade 33, the third fixed shaft passes through the blade gear 11, the wear-resistant positioning gasket 16 and the right-angle cutting blade 19 and is arranged in a third U-shaped groove on a third bracket, a third wear-resistant gasket 10 is supported and arranged on the third bracket, the third fixed shaft 9 passes through the third wear-resistant gasket 10, one side of the circular blade 33 is in friction extrusion contact with the right-angle cutting blade 19, the blade gear 11 is meshed with a connecting gear 14 of the intermediate transmission mechanism, and the circular blade 33 is driven to rotate through the connecting gear 14 to drive the circular blade 33 to extrude and cut paper relative to the right-angle cutting blade 19.

The friction cutting mechanism is also provided with an upper limiting mechanism, a lower limiting mechanism and a buffering and yielding mechanism.

In this embodiment, as shown in fig. 6, the upper and lower limiting mechanisms include an upper limiting gasket 17 and a lower limiting gasket 20, the lower limiting gasket 20 is fixedly installed at the bottom of the upper limiting gasket 17, one side of the upper limiting gasket 17 is fixedly installed on the boss of the lower shell 28 through a screw, the right angle cutting blade 19 is located at the bottom of the lower limiting gasket 29, the right angle cutting blade 19 is pressed by the lower limiting gasket 20 to limit the upper and lower surfaces of the right angle cutting blade 19, and in addition, the third fixing shaft 9 can also play a role in limiting the up-and-down movement of the right angle cutting blade 19.

As shown in fig. 7, the buffer yielding mechanism includes a gap adjusting rod 18, wherein the gap adjusting rod 18 is a metal elastic thin rod, one end of the gap adjusting rod is inserted into a small hole 53 of the right angle cutting blade 19, the other end of the gap adjusting rod is clamped on a fixed convex column 31 on the lower shell 28, and different paper thicknesses are adapted through the gap adjusting rod 18, so that the gap between the right angle cutting blade and the circular blade is adjusted.

As shown in fig. 5, the guide plate 29 is detachably mounted in the bottom fastening position of the right-angle cutting blade 19 by fastening, the guide plate 29 extends out of the lower end surface of the lower shell, a paper guiding cavity is formed between the protruding surface and the bottom surface of the lower shell, and an inclined guide part is arranged on one side of the guide plate 29 located in the paper guiding cavity.

The auxiliary roller set comprises two auxiliary rollers 26, a connecting wheel sleeve 23, a second shaft sleeve 25, a fourth fixed shaft 24 and a fourth wear-resistant gasket 21, wherein the fourth fixed shaft 24 penetrates through the connecting wheel sleeve 23 and penetrates through the second shaft sleeve 25 and the auxiliary rollers 26 to extend out, the second shaft sleeve 25 is arranged in the auxiliary rollers 26, the outer part of the fourth fixed shaft 24 is fixedly supported in a fourth U-shaped groove on a fourth support through the fourth wear-resistant gasket 21, a lower shell 28 and an upper shell are fixedly assembled through screws, a wheel groove for penetrating through the rollers is formed in the lower shell, and the rollers penetrate through the wheel groove to extend out of the bottom of the lower shell.

Working principle: the upper shell is held by a hand, the middle of the upper shell is aligned with the position of the paper 100 to be cut, the paper cutter is lightly pressed to push forwards, the paper cutter is rotated and rolled by the transmission roller to drive the power gear, then the power is transmitted to the blade gear by the connecting gear, and the cutting principle is realized by utilizing the rotation friction extrusion between the right-angle cutting blade and the circular blade.

The paper can be smoothly fed into the contact part of the circular blade and the right-angle cutting blade through the guiding function of the guide plate, and the friction can be generated between the rotation of the circular blade and the right-angle cutting blade, so that the paper can be cut and separated by friction force. The gap adjusting rod and the elastic force adjusting design mechanism can automatically adjust the extrusion force between the circular blade and the right-angle cutting blade,

The self-adaptive extrusion force can realize cutting of paper with different thicknesses, so that the round blade and the right-angle cutting blade can realize cutting of paper with different thicknesses smoothly through two design inventions of friction force and extrusion force, as shown in fig. 3 and 4.

The auxiliary roller plays a role in assisting in balancing and pushing the paper cutter. The first shaft sleeve plays a role in reducing friction force between the first fixed shaft and the transmission roller, so that the transmission roller slides and rolls smoothly.

When paper with different thickness passes through the round blade and the right-angle cutting blade, the clearance adjusting rod can self-adaptively send out rebound force, and the wear-resistant positioning gasket can be automatically adjusted to the clearance between the round blade and the right-angle cutting blade under the action of the rebound force of the clearance adjusting rod, so that the paper with different thickness is cut; the guide plate is used for guiding the paper to smoothly enter the contact opening of the round blade and the right-angle cutting blade, is an external part, can be detached and replaced, and is convenient for users, such as a stapler needle.

The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any changes or substitutions that do not undergo the inventive effort should be construed as falling within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A friction cutting structure, characterized in that: the device comprises a lower shell and an upper shell which is matched with the lower shell, wherein a group of auxiliary roller groups and a group of transmission roller groups are arranged in the lower shell, and rolling cutting movement between the lower shell and an object to be cut is completed through the two groups of roller groups; the output end of the transmission roller group is provided with a friction cutting mechanism, the outer side surface of the bottom of the lower shell is provided with a detachable guide plate, and a to-be-cut object is guided into the friction cutting mechanism for cutting by moving the lower shell;

The friction cutting mechanism comprises a blade gear, a third fixed shaft, a third wear-resistant gasket, a wear-resistant positioning gasket and a right-angle cutting blade, wherein the wear-resistant positioning gasket is inserted on a protruding part of the right-angle cutting blade, a first shaft hole is formed in the middle of the protruding part and is opposite to a second shaft hole on the wear-resistant positioning gasket, one side of the blade gear is provided with a circular blade, the third fixed shaft penetrates through the blade gear, the wear-resistant positioning gasket and the right-angle cutting blade and is arranged in a third U-shaped groove on the third support, the third support is provided with a third wear-resistant gasket in a supporting manner, the third fixed shaft penetrates through the third wear-resistant gasket, one side of the circular blade is in friction extrusion contact with the right-angle cutting blade, the blade gear is meshed with a connecting gear of the middle transmission mechanism, the circular blade is driven to rotate through the connecting gear to extrude and cut paper relative to the right-angle cutting blade, the friction cutting mechanism is further provided with an upper limiting mechanism and a lower limiting mechanism and a buffer yielding mechanism, the upper limiting gasket and the lower limiting gasket are fixedly arranged at the bottom of the upper limiting gasket, the upper limiting gasket and the lower limiting gasket, one side of the upper limiting mechanism is fixedly arranged at the lower limiting gasket passes through the upper limiting gasket and the lower limiting gasket, one side of the upper limiting gasket is fixedly arranged at the bottom of the limiting gasket, the upper limiting gasket is fixedly at the limiting mechanism and the lower limiting gasket is opposite to the lower limiting mechanism, the lower limiting mechanism is fixedly arranged at the limiting blade through the upper limiting rod and the lower limiting mechanism through the upper limiting rod and the upper limiting mechanism and the lower limiting gasket through the upper limiting gasket and the lower limiting mechanism and the lower limiting mechanism. The guide plate is installed in the bottom buckling position of the right-angle cutting blade in a buckling and dismounting mode, extends out of the lower end face of the lower shell, a paper guide cavity is formed between the protruding face of the guide plate and the bottom face of the lower shell, and an inclined guide part is arranged on one side of the paper guide cavity.

2. The friction cutting structure according to claim 1, wherein: the transmission roller group comprises a hollow power shaft, a power gear is arranged outside the power shaft, a first fixed shaft penetrates through the middle of the power shaft and extends out of two sides of the power shaft, and a transmission roller is respectively arranged at two sides of the extending end of the first fixed shaft; the transmission roller group is fixedly arranged on a first support on the lower shell, and the first wear-resistant gasket is supported and fixed in a first U-shaped groove of the first support.

3. The friction cutting structure according to claim 2, wherein: an intermediate transmission mechanism is arranged between the transmission roller group and the friction cutting mechanism and comprises a connecting gear, a second fixed shaft and a second wear-resistant gasket, the second fixed shaft penetrates through the connecting gear and stretches out of two sides of the connecting gear, the whole intermediate transmission mechanism is arranged on a second support on the lower shell, the second wear-resistant gasket is arranged at the stretching end of the second fixed shaft and is supported and fixed in a second U-shaped groove of the second support, and the connecting gear is meshed with the power gear for transmission.

4. The friction cutting structure according to claim 1, wherein: the auxiliary roller set comprises two auxiliary rollers, a connecting wheel sleeve, a second shaft sleeve, a fourth fixed shaft and a fourth wear-resistant gasket, wherein the fourth fixed shaft penetrates through the connecting wheel sleeve and extends out of the auxiliary rollers through the second shaft sleeve, the second shaft sleeve is arranged in the auxiliary rollers, and the outer part of the fourth fixed shaft is fixedly supported in a fourth U-shaped groove on a fourth support through the fourth wear-resistant gasket.

5. The friction cutting structure according to claim 2, wherein: the lower shell and the upper shell are fixedly assembled through screws, a wheel groove for the transmission roller to pass through is formed in the lower shell, and the transmission roller passes through the wheel groove and extends out of the bottom of the lower shell.