CN216033440U

CN216033440U - Hob cutting device

Info

Publication number: CN216033440U
Application number: CN202121840140.1U
Authority: CN
Inventors: 雪松
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-03-15
Anticipated expiration: 2031-08-06

Abstract

The application discloses hobbing cutter cutting device, including knife rest, hobbing cutter and driving piece, hobbing cutter upper end fix on the knife rest, the nib cutting end of hobbing cutter can be along waiting to cut a pencil radial movement, the rotatory hobbing cutter that drives of knife rest is rotatory around waiting to cut the pencil axis, the driving piece be provided with the track, the track act on hobbing cutter nib cutting end, rotatory hobbing cutter nib cutting end removes along the track direction. The hob can work to cut different pencil refills by the aid of the action of the driving piece on the hob and the limitation of the hob holder on the hob. Specifically, the shape of the end of the pen core cut by the hob depends on the shape of the rail. Wherein the track can be set up to rectangle, oval for this application can realize rectangle, oval-shaped pencil refill cutting.

Description

Hob cutting device

Technical Field

The application relates to the technical field of stationery supplies, in particular to a hobbing cutter cutting device.

Background

In study and life, the tip of a common pencil is conical, so that a user can write and draw pictures conveniently. Common pencil sharpeners, pencil sharpeners and cutting devices in the market are designed for cutting conical nibs. There are many other situations in which a pencil having a tip with a non-conical shape is required. For example, in a card-coating pencil used on an answer sheet in an examination, a pencil point needs to be cut into a flat shape or a square shape, so that a rectangular answer frame is conveniently and uniformly coated. In addition, in the fields of design, drawing, painting, card coating, engineering construction, carpentry, eyebrow pencil, etc., the pencil usually needs to be sharpened into a flat square or rectangle.

Present flat nib cutter, like chinese patent application "flat nib sharpener", application (patent) No.: CN201020624374.8, comprising: the guide rail or the guide groove is axially arranged on the inner wall of the shell; the pencil sharpener is arranged in the cylindrical shell and can slide along the guide rail or the guide groove; a flat pencil point knife edge is arranged at the bottom of the shell corresponding to the pencil lead extending hole; a return spring is arranged between the bottom in the shell and the bottom of the pencil sharpener. By adopting the structure, the penholder part of the pencil can be firstly cut into a conical shape, the pencil lead part extends out of the cutter seat, then the cutter seat is moved backwards, the pencil lead is inserted into the flat pencil point cutter edge, and the flat pencil point cutter edge cuts the pencil lead, thereby achieving the purpose of cutting the pencil point into a flat shape (square or rectangular). Obviously, the cutting mode is relatively troublesome and inconvenient for users to operate; the cutting of the refill is not easy to control, and the refill is easy to break.

Also like chinese patent application "the card is scribbled in english examination and is used sharpener", application (patent) No.: CN201710218326.5 includes the work disc, can dismantle last casing and lower casing of connection on the work disc, can dismantle the connection go up the pen feeding mechanism on the casing, locate the mechanism of cutting of work disc middle part top, locate the drive mechanism of work disc middle part below, be used for controlling the mechanism of stopping of the sword stop motion of cutting a pen, it includes planet carrier, knife rest, cutter, brush roller to cut a pen mechanism, it includes conducting rod, lower conducting rod, brush, controlling means, external wire, block to stop a pen mechanism, the block middle part is equipped with a first probe. The above patent does not actually cut the flat refill, but makes the nib thicker and convenient to paint card by controlling the cutting degree of the nib. In practice, the nib cut from it is still conical or truncated cone shaped.

There are no pencil sharpener or cutting device on the market, especially cutting device using hob cutter, which can simply and conveniently cut square, flat or rectangular pen point.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a hobbing cutter cutting device, can cut out the pencil of square, flat, rectangle or other irregular shape nib.

Another object of the present application is to provide a hob cutting apparatus which is easy to operate for the user and does not require a special control of the cutting degree.

Another object of this application is to provide a hobbing cutter cutting device, simple structure, the cost is with low costs.

Another object of this application is to provide a hobbing cutter cutting device, stability is high, and the cutting is stable.

The technical scheme adopted by the application is as follows: the utility model provides a hobbing cutter cutting device, includes knife rest, hobbing cutter and driving piece, the hobbing cutter upper end fix on the knife rest, the nib cutting end of hobbing cutter can be along waiting to cut pencil a radial movement, the knife rest is rotatory to be driven the hobbing cutter around waiting to cut pencil axis rotatory, the driving piece be provided with the track, the track act on hobbing cutter nib cutting end, rotatory hobbing cutter nib cutting end removes along the track direction.

Compared with the prior art, the pencil sharpener has the advantages that the hob sharpener is fixedly mounted on the hob holder in the prior art, and the hob sharpener and the hob holder can be movably mounted relatively, so that the cutting end of the pencil point of the hob sharpener can move along one of the radial directions of the pencil to be sharpened. Secondly, set up and have orbital driving piece, when the knife rest drives the hobbing cutter around pencil is rotatory, the nib cutting end of hobbing cutter also can remove along the track direction, through the effect of driving piece to the hobbing cutter, the spacing of knife rest to the hobbing cutter for hobbing cutter work can cut out different pencil refill. Specifically, the shape of the end of the pen core cut by the hob depends on the shape of the rail. Wherein the track can be set up to rectangle, oval for this application can realize rectangle, oval-shaped pencil refill cutting.

In some embodiments of the present application, the hob is provided with an arbor, the arbor is arranged along the axial direction of the hob, and the arbor extends from the upper end face and the cutting end face of the pen point of the hob.

Preferably, the cutter shaft and the hob are integrally formed.

In some embodiments of the present application, the hob is installed on the hob holder, the hob holder is opened with a notch, and the arbor of the cutting end of the hob nib is installed in the notch, and the arbor can move along the length direction of the notch. Specifically, the length direction of the notch is a radial direction of the pencil to be cut. Thereby inject the movement stroke of hobbing cutter nib cutting end arbor through setting up the notch structure to make the motion of hobbing cutter be stable, effectively improve the cutting accuracy of refill.

In some embodiments of the present application, the notch extends through the outer peripheral surface of the tool holder to facilitate the installation of the arbor.

In some embodiments of the present application, the track comprises at least one active wall that acts directly or indirectly on an axis of the cutting end of the hob tip. The cutter rest rotates to drive the hob to rotate, and the hob rotates around the pencil while the hob shaft at the cutting end of the pencil point of the hob moves along the track direction. The active walls form a closed figure.

In this application, an elastic member may be provided to act on the roller cutter and urge the cutting end of the nib of the roller cutter to close the action wall. Specifically, if the working wall is located on the outer side of the hob shaft, the elastic member should apply a force to the hob shaft in the radial direction. If the acting wall is positioned on the inner side surface of the hob cutter shaft, the elastic part should apply a force to the hob cutter shaft to the center of a circle along the radial direction. The radial direction, the periphery and the circle center referred to herein all refer to the radial direction, the periphery and the circle center of the pencil to be cut.

Of course, the track in this application may be a long and narrow channel, that is, the track includes two parallel side walls, and both side walls of the track can be used as the acting walls. The track has limiting effect to the cutter shaft itself for the cutter shaft can be along track removal, can not set up the elastic component this moment, and the track is higher for the passageway of being provided with both sides wall then hobbing cutter motion's stability moreover.

In some embodiments of the present application, the track is disposed on the periphery of the pencil to be cut.

In some embodiments of the present application, the driving member is substantially circular in shape, the driving member being located at the cutting end of the nib of the cartridge, the cartridge portion extending centrally through the driving member. The driving piece is fixed in the cutting device, and the tool rest can rotate relative to the driving piece. The stable setting of driving piece for orbital position is stable, effectively improves this application job stabilization nature.

In some embodiments of the present application, the track is a non-circular channel, and the shaft of the cutting end of the hob tip extends into the channel. When the hob rotates around the pencil, the hob shaft moves along the channel, and the channel acts on the cutting end of the hob nib, so that the hob moves in the notch. Specifically, the channel may be square, oval, rectangular, etc. Preferably, the track structure that this application relates to, its chamfer is the circular arc transition, avoids the arbor to block in the track.

In some embodiments of the present application, the track is a non-circular groove, the action wall is a groove wall surface, the groove wall surface is connected with the cutter shaft of the cutting end of the hob pen point through a connecting piece, and the groove wall surface pushes the cutter shaft of the cutting end of the hob pen point to move in the groove through the connecting piece. The connecting piece is sleeved on the cutter shaft and is of a circular ring-shaped structure.

In some embodiments of the present application, a spring is installed in the tool rest, and the spring acts on the knife shaft, and the spring applies force to push the knife shaft to the wall surface of the groove. The knife rest is provided with a mounting column, the spring is sleeved on the mounting column, and one end of the spring acts on the knife rest.

In some embodiments of the present application, the guide is attached to the shaft of the cutting end of the nib of the hob. Specifically, the guide portion is snapped into the arbor.

In some embodiments of the present application, the cutting device includes an adjusting rod, the adjusting rod is connected with the guide member, the adjusting rod can move up and down in the cutting device, and the moving adjusting rod drives the cutter shaft to move through the guide member. Specifically, a portion of the adjustment lever is snapped into the guide. When the operation adjusting rod is positioned at a high position, the spring pushes the cutter shaft to the wall surface of the groove. During the rotation of the cutter frame, the action wall acts on the roller shaft to cut the pen point in the shape of the track.

When the adjusting rod is located at a low position, the adjusting rod drives the cutter shaft to press downwards through the guide piece, the cutter shaft is separated from the acting wall, namely, a gap exists between the acting wall and the cutter shaft, the cutter shaft is not stressed to move at the moment, and the pencil with the normal conical pen point is cut by the pencil sharpener.

In some embodiments of the present application, the other end of the spring extends into the guide member, and the spring applies force to the hob shaft through the guide member. The spring is in a compressed state.

In some embodiments of the present application, the driving member is integral with the ring gear, and the driving member is coaxial with and stacked on top of the ring gear. The arbor on install the gear, gear and ring gear meshing, the rotatory drive gear of knife rest rotate along ring gear internal face, the gear is rotatory around its central axis, rotatory gear drives the hobbing cutter and rotates around its central axis. The above-described structure is generally provided in a manual cutting device, that is, the ring gear and the driver are both provided at the nib cutting end of the tool holder. In the electric cutting device, the ring gear is a separate component provided at the upper end of the tool holder, and the gear is provided at the upper end of the same hob and is engaged with the ring gear.

Drawings

The present application will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a first embodiment of the present application;

FIG. 2 is a cross-sectional view of a first embodiment of the present application;

FIG. 3 is a schematic structural diagram of a driving member according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a driving member according to a second embodiment of the present application;

FIG. 5 is a schematic structural diagram of a second embodiment of the present application;

FIG. 6 is a cross-sectional view of a second embodiment of the present application;

fig. 7 is a schematic structural diagram of a third embodiment of the present application.

Wherein the reference numerals are specified as follows: 1. a pen accommodating bin; 2. hobbing cutters; 3. a drive member; 4. a cutter shaft; 5. a notch; 6. a limiting member; 7. a track; 7a, an action wall; 8. a connecting member; 9. a spring; 10. a ring gear; 11. a tool holder; 12. mounting a column; 13. a guide member; 14. and adjusting the rod.

Detailed Description

The present application will now be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

A hob cutting device, as shown in fig. 1 to 3, is an embodiment one of the present application: including knife rest 11, hobbing cutter 2 and driving

piece

3, 2 upper ends of hobbing cutter fix on knife rest 11, the nib cutting end of hobbing cutter 2 can be along waiting to cut a pencil radial movement, knife rest 11 rotates and drives hobbing cutter 2 around waiting to cut the pencil axis and rotate, driving piece 3 be provided with track 7, track 7 act on 2 nib cutting ends of hobbing cutter, 2 nib cutting ends of rotatory hobbing cutter move along 7 directions in track.

Firstly, different from the prior art that the hob 2 is fixedly arranged on the tool rest 11, the hob 2 and the tool rest 11 can be movably arranged relatively, so that the cutting end of the pen point of the hob 2 can move along one of the radial directions of the pencil to be cut. Secondly, set up driving piece 3 that has track 7, when knife rest 11 drives hobbing cutter 2 and around pencil rotation, the nib cutting end of hobbing cutter 2 also can remove along track 7 direction, through the effect of driving piece 3 to hobbing cutter 2, knife rest 11 is spacing to hobbing cutter 2 for hobbing cutter 2 work can cut out different pencil refill. Specifically, the shape of the end of the pen core cut by the hob 2 depends on the shape of the rail 7. Wherein, track 7 can set up to rectangle, ellipse for this application can realize rectangle, oval-shaped pencil refill cutting.

Generally, a pencil holding bin 1 is arranged on a tool rest of the cutting device, and after a pencil to be cut is inserted into the cutting device, a part to be cut of the pencil is located in the pencil holding bin 1. Generally, the axis of the pencil to be cut is the axis of the pencil containing bin 1.

The hob 2 is provided with a hob shaft 4, the hob shaft 4 is arranged along the axial direction of the hob 2, and the hob shaft 4 extends out of the upper end face of the hob 2 and the cutting end face of a pen point; the cutter shaft 4 and the hob 2 are integrally formed. The hob 2 is installed on the hob holder 11, the hob holder 11 is provided with a notch 5, the cutter shaft 4 of the cutting end of the pen point of the hob 2 is installed in the notch 5, and the cutter shaft 4 can move along the length direction of the notch 5. Specifically, the length direction of the notch 5 is a radial direction of the pencil to be cut. Thereby inject the movement stroke of 2 nib cutting end arbor 4 of hobbing cutter through setting up notch 5 structures to make the motion of hobbing cutter 2 be stable, effectively improve the cutting accuracy of refill. The notch 5 penetrates through the peripheral surface of the cutter holder 11, so that the cutter shaft 4 can be conveniently installed.

The track 7 comprises at least one acting wall 7a, and the acting wall 7a directly or indirectly acts on the cutter shaft 4 at the cutting end of the pen point of the hob 2. The tool rest 11 rotates to drive the hob 2 to rotate, and the hob 2 rotates around the pencil, and meanwhile, the hob shaft 4 at the cutting end of the pen point of the hob 2 moves along the track 7 direction. The active walls 7a form a closed figure.

In this application, an elastic member may be provided to act on the hob 2 and push the nib cutting end of the hob 2 close to the action wall 7 a. Specifically, if the action wall 7a is located on the outer side surface of the shaft 4 of the hob 2, the elastic member should apply a force to the shaft 4 of the hob 2 in the radial direction toward the outer periphery. If the action wall 7a is located on the inner side of the shaft 4 of the hob 2, the elastic element should apply a force to the shaft 4 of the hob 2 in the radial direction towards the center of the circle. The radial direction, the periphery and the circle center referred to herein all refer to the radial direction, the periphery and the circle center of the pencil to be cut.

Of course, the rail 7 in this application is a long and narrow channel, i.e. the rail 7 comprises two parallel side walls, both side walls of the rail 7 can be used as the acting walls 7 a. Track 7 itself has a limiting action to arbor 4 for arbor 4 can move along track 7, can not set up the elastic component this moment, and the stability of 7 passageway then hobbing cutter 2 movements of track for being provided with both sides wall is higher moreover.

The track 7 is arranged on the periphery of the pencil to be cut. The basic shape of the driving element 3 is circular ring, the driving element 3 is arranged at the lower end of the tool holder 11, and the tool holder 11 partially passes through the center of the driving element 3. The driving member 3 is fixed in the cutting device, and the tool holder 11 is rotatable relative to the driving member 3. The stable setting of driving piece 3 for the stable position of track 7 effectively improves the stability of this application work.

The track 7 is a non-circular channel, and the cutter shaft 4 at the cutting end of the pen point of the hob 2 extends into the channel. Hob 2 rotates around the pencil, and arbor 4 moves along the passageway, and the passageway acts on hob 2 nib cutting end for hob 2 moves in notch 5. Specifically, the channel may be square, oval, rectangular, etc. Preferably, the structure of the rail 7 related in the present application has a circular arc transition at a chamfer, so as to prevent the cutter shaft 4 from being locked in the rail 7.

As shown in fig. 4 to 6, the second embodiment of the present application is the same as the first embodiment, except that: the track 7 be the non-circular recess, the effect wall 7a be the recess wall, the recess wall is connected with the arbor 4 of 2 nib cutting ends of hobbing cutter through connecting piece 8, the recess wall promote the arbor 4 of 2 nib cutting ends of hobbing cutter to remove in notch 5 through connecting piece 8. The connecting piece 8 is sleeved on the cutter shaft 4, and the connecting piece 8 is of a circular ring-shaped structure. The connecting element 8 here may be a bearing.

A spring 9 is arranged in the tool rest 11, the spring 9 acts on the cutter shaft 4, and the spring 9 applies force to push the cutter shaft 4 to the wall surface of the groove. The knife rest 11 is provided with a mounting column 12, the spring 9 is sleeved on the mounting column 12, and one end of the spring 9 acts on the knife rest 11.

The cutter shaft 4 of the tip cutting end of the hob 2 is connected with a guide piece 13, and particularly, the guide piece is partially clamped in the cutter shaft. The cutting device comprises an adjusting rod 14, the adjusting rod 14 is connected with a guide piece 13, the adjusting rod 14 can move up and down in the cutting device, and the moving adjusting rod 14 drives the cutter shaft 4 to move through the guide piece 13. In particular, said portion of the adjustment lever 14 is snapped into the guide 13. When the operation adjusting rod 14 is positioned at the high position, the spring 9 pushes the cutter shaft 4 to the wall surface of the groove. During rotation of the holder 11, the working wall 7a acts on the shaft of the hob 2, thereby cutting the pen point in the shape of the track 7.

When the adjusting rod 14 is located at the low position, the adjusting rod 14 drives the cutter shaft 4 to press down through the guide piece 13, the cutter shaft 4 is separated from the acting wall 7a, namely, a gap exists between the acting wall 7a and the cutter shaft 4, the cutter shaft 4 is not forced to move at the moment, and the pencil with the normal conical pen point is obtained by cutting.

The other end of the spring 9 extends into the guide piece 13, and the spring 9 applies force to the cutter shaft 4 of the hob 2 through the guide piece 13. The spring 9 is in a compressed state.

The driving part 3 and the gear ring 10 form a whole, and the driving part 3 and the gear ring 10 are coaxial and are overlapped up and down. Arbor 4 on install the gear, gear and ring gear 10 meshing, knife rest 11 rotatory drive gear along ring gear 10 internal face rotate, the gear is rotatory around its central axis, rotatory gear drives hobbing cutter 2 and rotates around its central axis. The above-described structure is generally provided in a manual cutting apparatus, that is, the ring gear 10 and the driver 3 are both provided at the lower end of the tool holder 11. In the electric cutting apparatus, the ring gear 10 is provided as a separate component at the upper end of the tool holder 11, and the gear is provided at the upper end of the same hob 2 and meshes with the ring gear 10.

As shown in fig. 7, a third embodiment of the present application is the same as the first embodiment except that: the track 7 is an accommodating space at the periphery of the non-circular boss, and the peripheral surface of the non-circular boss is an acting wall.

The cutter shaft of the hob 2 is connected with a limiting part 6, and the limiting part 7 pulls the cutter shaft 4 to lean against the axis of the pencil to be cut. The limiting member 6 can be a snap spring, so that the cutter shaft 4 always keeps contact with the action wall, and the bending change of the action wall is transmitted to the cutter shaft 4.

The present application has been described in detail above, and specific examples thereof are used herein to explain the principles and implementations of the present application, which are presented solely to aid in understanding the present application and its core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. The utility model provides a hobbing cutter cutting device, its characterized in that includes knife rest (11), hobbing cutter (2) and driving piece (3), hobbing cutter (2) upper end fix on knife rest (11), the nib cutting end of hobbing cutter (2) can be along waiting to cut a pencil radial movement, the rotatory hobbing cutter (2) of driving of knife rest (11) are rotatory around waiting to cut the pencil axis, driving piece (3) be provided with track (7), track (7) act on hobbing cutter (2) nib cutting end, rotatory hobbing cutter (2) nib cutting end is along track (7) direction removal.

2. A hob cutting apparatus according to claim 1, characterized in, that the cutting tip of the hob (2) is provided with an arbor (4), said track (7) comprising at least one active wall (7 a), the active wall (7 a) acting directly or indirectly on the arbor (4) of the cutting tip of the hob (2).

3. The hob cutting device according to claim 1, characterized in that the hob (2) is mounted on a hob holder (11), said hob holder (11) is provided with a notch (5), the arbor (4) of the cutting end of the pen point of the hob (2) is mounted in the notch (5), the arbor (4) is movable along the length direction of the notch (5).

4. A hob cutting apparatus according to claim 1, characterized in, that the hob (2) is connected with an elastic member, said elastic member limiting the position of the shaft (4) of the cutting tip of the hob (2) in the notch (5).

5. A hob cutting apparatus according to claim 1, characterized in, that said track (7) is a non-circular channel, said track (7) being arranged at the periphery of the pencil to be cut, and the shaft (4) of the cutting end of the pen point of said hob (2) extending into the channel.

6. A hob cutting apparatus according to claim 2, characterized in, that said track (7) is a non-circular groove, said active wall (7 a) is a groove wall, said groove wall is connected to the shaft (4) of the hob (2) at the cutting end of the pen point via a connecting member (8), said groove wall pushes the shaft (4) of the hob (2) at the cutting end of the pen point to move in the notch (5) via the connecting member (8).

7. The hobbing cutter cutting device according to claim 6, characterized in that the connecting piece (8) is sleeved on the cutter shaft (4), and the connecting piece (8) is of an annular structure; a spring (9) is installed in the tool rest (11), the spring (9) acts on the cutter shaft (4), and the cutter shaft (4) is pushed to the wall surface of the groove by the force applied by the spring (9).

8. A hob cutting apparatus according to claim 7, characterized in, that said holder (11) is provided with a mounting post (12), said spring (9) is fitted over the mounting post (12), one end of said spring (9) acting on the holder (11); the cutter shaft (4) at the cutting end of the pen point of the hob (2) is connected with a guide piece (13), the other end of the spring (9) extends into the guide piece (13), and the spring (9) applies force to the cutter shaft (4) of the hob (2) through the guide piece (13); the spring (9) is in a compressed state.

9. The hobbing cutter cutting device according to claim 2, characterized by comprising a gear ring (10), wherein the driving member (3) is coaxial with the gear ring (10), and the driving member (3) and the gear ring (10) are overlapped up and down to form a whole; the cutter shaft (4) is provided with a gear, and the gear is meshed with the gear ring (10).

10. A hob cutting device according to claim 1, characterized in, that said rail (7) is square, rectangular or oval.