CN111360592A

CN111360592A - Automatic knife sharpening device and soft material cutting device

Info

Publication number: CN111360592A
Application number: CN202010358082.2A
Authority: CN
Inventors: 李国华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-07-03

Abstract

The invention relates to an automatic knife sharpening device, comprising: the tool sharpener comprises a telescopic finger, driving equipment and a driving wheel, wherein one end of the telescopic finger is connected with a connecting arm, the driving equipment is arranged on the connecting arm and connected with the driving wheel, a driven wheel is arranged at the other end of the telescopic finger, and a sharpener abrasive belt is wound between the driving wheel and the driven wheel. According to the automatic knife sharpening device and the soft material cutting device, the knife sharpening abrasive belt wound on the telescopic fingers enables the contact between the knife sharpening abrasive belt and the knife edge of the cut-off knife to be a plane contact, and the knife edge of the cut-off knife after sharpening is in a normal wedge shape, so that the rigidity of the knife edge is improved, the service life of the knife edge is prolonged, the knife sharpening frequency is reduced, the loss of the cut-off knife is greatly reduced, and the cost is saved.

Description

Automatic knife sharpening device and soft material cutting device

Technical Field

The invention relates to the field of cutting equipment, in particular to a knife sharpening device for a soft material cutting device and the soft material cutting device.

Background

The automatic cutting machine is used for cutting and cutting sheets in various industries and does not need any die; the cutting machine is controlled by system software, then a product is directly cut, and as long as corresponding parameters are set on the operating platform, a computer transmits corresponding instructions to the cutting machine. The cutting machine carries out rapid cutting according to the received design draft, and the automatic program is high; the operation is simple. Is cutting equipment adopted in many industries at present.

When the cutting machine is used for cutting, the cutter needs to sharpen the cutter at regular time or irregular time so as to ensure the stable cutting capability of the cutter. The existing cutting device is high in replacement cost because the cutter is replaced after working for a certain time; or sharpen the knife through electronic cylindricality equipment of whetting a knife, the blade point after whetting a knife is not the wedge, but crescent, and this makes the blade point life after whetting a knife short, has increased the frequency of whetting a knife for the loss of cut-off knife.

Disclosure of Invention

The invention aims to solve the problems caused by the cylindrical knife sharpening equipment in the existing cutting equipment, and adopts the technical scheme that: an automatic sharpening device, comprising: the tool sharpener comprises a telescopic finger, driving equipment and a driving wheel, wherein one end of the telescopic finger is connected with a connecting arm, the driving equipment is arranged on the connecting arm and connected with the driving wheel, a driven wheel is arranged at the other end of the telescopic finger, and a sharpener abrasive belt is wound between the driving wheel and the driven wheel.

The improved structure is characterized in that the telescopic finger comprises a base and a telescopic part, wherein one end of the telescopic part is arranged in the base through an elastic piece, and the telescopic part is provided with the driven wheel.

The improved structure is characterized in that a limiting assembly used for limiting the retraction position of the telescopic part is arranged between the base and the telescopic part.

The improved structure is characterized in that the limiting assembly comprises a limiting rod, a guide groove and a limiting groove, the guide groove is communicated with the limiting groove and is arranged on the base, one end of the limiting rod is fixed on the telescopic part, and the other end of the limiting rod is clamped in the guide groove.

The improved structure is characterized in that a clamping groove for accommodating a part of the limiting rod is arranged at the fixed end of the limiting rod of the telescopic part.

In a further improvement, the stop lever has a lateral projection or bend.

The improved structure is characterized in that a rotation driving assembly for driving the connecting arm to rotate is arranged on the connecting arm.

The improved structure is characterized in that the rotation driving assembly comprises a fixed arm, a sleeve, second driving equipment, a connecting wire and a reset spring, the fixed arm is arranged on a fixed seat of the driving equipment, the sleeve is arranged between the fixed arm and the second driving equipment, the connecting wire is arranged in the sleeve, one end of the connecting wire is connected with the connecting arm, the other end of the connecting wire is connected with the second driving equipment, and the reset spring is connected to the connecting arm.

The grinding abrasive belt of the telescopic part is provided with a wear-resisting sheet at the position corresponding to the grinding abrasive belt.

In addition, the invention also provides a soft material cutting device which comprises the automatic knife sharpening device, a cutting machine head and a cutting platform, wherein the cutting mechanism is arranged on the cutting platform through an XY moving assembly, and the automatic knife sharpening device is arranged on the cutting machine head and is positioned beside a cutting knife.

The invention has the beneficial effects that:

according to the automatic knife sharpening device and the soft material cutting device, the knife sharpening abrasive belt wound on the telescopic fingers enables the contact between the knife sharpening abrasive belt and the knife edge of the cut-off knife to be a plane contact, and the knife edge of the cut-off knife after sharpening is in a normal wedge shape, so that the rigidity of the knife edge is improved, the service life of the knife edge is prolonged, the knife sharpening frequency is reduced, the loss of the cut-off knife is greatly reduced, and the cost is saved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of an automatic sharpening device according to the present invention;

FIG. 2 is a schematic view of the automatic sharpening device according to the present invention;

FIG. 3 is a schematic view of the telescoping finger configuration of the present invention;

FIG. 4 is a schematic view of the telescoping finger configuration of the present invention;

FIG. 5 shows the shape of the blade of the automatic sharpening device;

FIG. 6 shows the shape of the blade after sharpening by a conventional cylindrical sharpening device.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the description of the invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

As shown in fig. 1 and 2, the present invention provides an automatic knife sharpening device, comprising: the automatic sharpening device comprises a telescopic finger 1, a driving device 2 and a driving wheel 3, wherein a connecting arm 4 is fixedly connected to one end of the telescopic finger 1 from top to bottom, the driving device 2 is installed on the connecting arm 4 through a fixing seat 21, the output end of the driving device 2 is connected with the driving wheel 3, a driven wheel 11 capable of freely rotating is arranged at the other end of the telescopic finger 1, a sharpening abrasive belt 5 is wound between the driving wheel 3 and the driven wheel 11, and the telescopic finger 1, the driving wheel 3 and the driven wheel 11 are in one-to-one correspondence. When sharpening is needed, the driving device 2 drives the driving wheel 3 to rotate, and then the sharpening abrasive belt 5 rotates between the driven wheel 11 and the driving wheel 3 to start sharpening. As sharpening progresses, the sharpening sanding belt 5 comes into planar contact with the edge contact surface, sharpening the knife into a wedge shape (as shown in fig. 5). While the final contact surface with the edge of a conventional cylindrical sharpening device is curved to sharpen the knife in a crescent shape (as shown in fig. 6). The driving device in this embodiment may be a motor.

According to the automatic knife sharpening device provided by the invention, the knife sharpening abrasive belt wound on the telescopic finger enables the contact between the knife sharpening abrasive belt and the knife edge of the cut-off knife to be a plane contact, and the knife edge of the cut-off knife after sharpening is in a normal wedge shape, so that the rigidity of the knife edge is improved, the service life of the knife edge is prolonged, the sharpening frequency is reduced, the loss of the cut-off knife is greatly reduced, and the cost is saved.

The sharpening abrasive belt 5 needs to be replaced after being used for a period of time, and in order to facilitate replacement of the sharpening abrasive belt 5, as shown in fig. 3, a further improvement of the device is that the telescopic finger 1 comprises a base 12 and a telescopic part 13, a part of one end of the telescopic part 13 is arranged in the base 12 through an elastic part, namely, a cylindrical groove is arranged on the base 12, an elastic part is arranged in the cylindrical groove, a part of one end of the telescopic part 13 is arranged in the cylindrical groove, meanwhile, a waist-shaped groove is arranged on a part extending into the cylindrical groove, an inwardly extending convex column is arranged in the cylindrical groove, the telescopic stroke of the telescopic part 13 is limited through matching of the convex column and the waist-shaped groove, and the telescopic part 13 is provided with the driven wheel 11. When the sharpening abrasive belt 5 needs to be replaced, only the telescopic part 13 needs to be compressed to retract, so that the sharpening abrasive belt 5 can be loosened, and then the sharpening abrasive belt is taken down and replaced by another sharpening abrasive belt, which is very convenient.

In a further improvement, a limit component 14 for limiting the retraction position of the telescopic part 13 is arranged between the base 12 and the telescopic part 13. When the sharpening sanding belt 5 is replaced, in order to facilitate the removal and replacement of the sharpening sanding belt, the telescopic part 13 needs to be in a state of being compressed all the time in the process, which makes the removal and replacement of the sharpening sanding belt 5 inconvenient. In this technical scheme, through spacing subassembly 14 restriction pars contractilis 13 back-retraction position, promptly its position can be injectd by spacing subassembly 14 after pars contractilis 13 is compressed, whet knife grinding abrasive band 5 drops naturally, change new whet knife grinding abrasive band 5 can, then open spacing subassembly 14, pars contractilis 13 kick-backs, tensioning whet knife abrasive band 5.

As shown in fig. 4, the limiting component 14 further includes a limiting rod 141, a guide groove 142 and a limiting groove 143, the guide groove 142 is communicated with the limiting groove 143 and disposed on the base 12, the limiting groove 143 extends perpendicular to the extending direction of the retractable finger 1, one end of the guide groove 142 is communicated with one end of the limiting groove 143, the communicated guide groove 142 and the limiting groove 143 are substantially shaped like a numeral "7", one end of the limiting rod 141 is fixed on the retractable part 13, and the other end of the limiting rod 141 is bent towards the guide groove 142 and is clamped in the guide groove 142. When the telescopic part 13 is compressed, the bent end of the limiting rod 141 slides to the limiting groove 143 along the guiding groove 142, and the limiting groove 143 is a horizontal groove perpendicular to the telescopic direction of the telescopic part 13, so that the bent part of the limiting rod 141 is clamped and cannot slide out after sliding into the limiting groove 143. When the limit needs to be released, the limit rod 141 is manually moved, so that the communication end of the bending part limit groove 143 and the guide groove 142 slides out, and the expansion part 13 rebounds.

In order to reduce the friction between the bent portion of the limiting rod 141 and the guiding

groove

142, 143, the bent portion is sleeved with a roller.

As shown in fig. 4, the fixed end of the limiting rod 141 is used by being continuously subjected to torsion when the limiting rod 141 works, and the fixed end may be loosened after a long time. In a further improvement of the present device, a fastening slot 15 for receiving a portion of the limiting rod 141 is disposed at the fixed end 1411 of the limiting rod 141 of the telescopic portion 13. The part of the rod body of the limiting rod 141 connected with the fixed end of the limiting rod 141 is clamped by the clamping groove 15, so that the fixed end of the limiting rod 141 is not subjected to the torsion action.

As shown in fig. 3, the stopper rod 141 is attached to the bottom of the retractable finger 1, and is usually attached to the bottom, so that the operating space when the finger is pressed is limited, which causes inconvenience in pressing. The device is further improved in that the limiting rod 141 is provided with a lateral convex part or a bent part 1412, meanwhile, in order to match the convex part or the bent part 1412, the bottom of the telescopic finger 1 is provided with a groove 16, and the convex part or the bent part 1411 protrudes out of the edge of the groove 16, so that part of the convex part or the bent part 1412 is suspended, and a sufficient operation space is provided for pressing.

When the knife grinding device is used, the knife is usually required to be far away from the cut-off knife when the knife grinding is not required, and the cut-off knife is supported when the knife grinding is required, so that the full automation of the knife grinding process is realized, and the poor knife grinding effect and the danger caused by manual operation are avoided. The device is further improved in that a rotary driving component 6 for driving the connecting arm 4 to rotate is arranged on the connecting arm 4. The rotating assembly component 6 drives the connecting arm to rotate by a certain angle, so that the telescopic finger connected with the connecting arm also rotates along with the connecting arm, and the device can swing in a certain angle to lean against or keep away from the cut-off knife.

As shown in fig. 1, the rotation driving assembly 6 is further modified to include a fixed arm 61, a sleeve 62, a second driving device 63, a connecting wire 64 and a return spring 66, wherein the fixed arm 61 is disposed on the fixed seat 21 of the driving device 2, that is, the fixed arm 61 is fixedly connected with the driving device 2, the sleeve 62 is disposed between the fixed arm 61 and the second driving device 63, the connecting wire 64 is disposed in the sleeve 62, and one end of the connecting wire 64 is connected with the connecting arm 4, the other end of the connecting wire is connected with the second driving device 63, the connecting arm 4 is connected with the return spring 66, and the other end of the return spring is connected with a fixed object. Wherein the second drive device 63 is fixedly mounted on another fixture. During operation, under the drive of second drive device 63, connecting wire 64 is pulled to, linking arm 4 is pulled and is rotated, and then flexible finger rotates thereupon, makes this device support the cut-off knife, when second drive device 63 loosened connecting wire 64, under the cushion collar elasticity effect, flexible finger swings and gets back to the position of keeping away from the cut-off knife. In the present embodiment, the second driving device 63 employs a cylinder.

In a further improvement, a rubber buffering dust cover 65 is sleeved outside the connecting line 64 between the connecting arm 4 and the fixing arm 61. The rubber buffering dust cover 65 plays a role of buffering between the connecting arm 4 and the fixed arm 61 when the connecting arm 4 is pulled; meanwhile, lubricating grease is stored in the rubber buffer dust cover 65, so that the surface of the connecting wire 64 is sufficiently lubricated by the grease, the tensile resistance of the connecting wire 64 is reduced, and the connecting wire 64 is prevented from being worn too quickly; but also can prevent dust from falling on the connecting wire and prevent sundries from entering the sleeve pipe to cause blockage.

The further improvement is that the telescopic fingers 1, the driving wheels 3 and the driven wheels 11 can be arranged up and down by two or more sets according to the length of the cutter and the actual use requirement, so as to widen the sharpening width. And when two telescopic fingers 1 are provided, the two connecting arms 4 are respectively positioned at one end of the uppermost telescopic finger 1 and one end of the lowermost telescopic finger 1, and the two connecting arms 4 vertically correspond to each other.

In a further improvement, a wear-resistant plate 131 is arranged at a position corresponding to the sharpening abrasive belt of the telescopic part 13. The abrasive belt is worn on the forearm of the sharpening finger during the high-speed running process, and the wear-resisting sheet 131 is used for protecting the forearm of the sharpening finger.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An automatic sharpening device, comprising: the tool sharpener comprises a telescopic finger, driving equipment and a driving wheel, wherein one end of the telescopic finger is connected with a connecting arm, the driving equipment is arranged on the connecting arm and connected with the driving wheel, a driven wheel is arranged at the other end of the telescopic finger, and a sharpener abrasive belt is wound between the driving wheel and the driven wheel.

2. The automatic sharpening device according to claim 1, wherein the retractable finger comprises a base and a retractable portion, a portion of one end of the retractable portion is disposed in the base through an elastic member, and the retractable portion is provided with the driven wheel.

3. The automatic sharpening device according to claim 2, wherein a limiting assembly is disposed between the base and the telescopic portion for limiting a retracted position of the telescopic portion.

4. The automatic sharpening device according to claim 3, wherein the limiting assembly comprises a limiting rod, a guide groove and a limiting groove, the guide groove and the limiting groove are communicated and arranged on the base, one end of the limiting rod is fixed on the telescopic portion, and the other end of the limiting rod is clamped in the guide groove.

5. The automatic sharpening device according to claim 4, wherein a slot for receiving a portion of the limiting rod is provided at the fixing end of the limiting rod of the telescopic portion.

6. The automatic sharpening device according to claim 4, wherein the stop bar has a lateral bulge or bend.

7. The automatic sharpening device according to claim 1, wherein the connecting arm is provided with a rotation driving assembly for driving the connecting arm to rotate.

8. The automatic sharpening device according to claim 7, wherein the rotary driving assembly comprises a fixed arm, a sleeve, a second driving device, a connecting wire and a return spring, the fixed arm is disposed on a fixed seat of the driving device, the sleeve is disposed between the fixed arm and the second driving device, the connecting wire is disposed in the sleeve, one end of the connecting wire is connected to the connecting arm, the other end of the connecting wire is connected to the second driving device, and the return spring is connected to the connecting arm.

9. The automatic sharpening device according to claim 2, wherein a wear plate is provided at a position corresponding to the sharpening sanding belt of the telescopic portion.

10. A soft material cutting device, comprising the automatic knife sharpening device, a cutting head and a cutting platform according to any one of claims 1 to 8, wherein the cutting mechanism is arranged on the cutting platform through an XY moving assembly, and the automatic knife sharpening device is arranged on the cutting head and beside a cutting knife.