CN108481965B

CN108481965B - Feeding device and pencil sharpener

Info

Publication number: CN108481965B
Application number: CN201810355975.4A
Authority: CN
Inventors: 马金明
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-04-19
Filing date: 2018-04-19
Publication date: 2024-04-26
Anticipated expiration: 2038-04-19
Also published as: CN108481965A

Abstract

The invention provides a feeding device and a pencil sharpener. The device comprises: the clamping assembly, the conveying assembly and the driving mechanism are used for clamping the to-be-conveyed piece; the clamping assembly is provided with clamping jaws for gradually clamping the to-be-conveyed piece; the driving mechanism is connected with the clamping assembly and is used for driving the clamping assembly to rotate so as to gradually clamp the to-be-conveyed piece through the clamping jaws, and driving the clamping assembly to rotate after the clamping jaws clamp the to-be-conveyed piece so as to drive the conveying assembly to spiral for feeding; the conveying assembly is sleeved outside the clamping assembly and is rotatably connected with the clamping assembly, and the clamping assembly is used for driving the conveying assembly to screw to drive the workpiece to be conveyed to move after the workpiece to be conveyed is clamped by the clamping assembly. According to the invention, the clamping assembly is driven to rotate by the driving mechanism, and after a piece to be conveyed is clamped by the clamping claw, the conveying assembly is driven to rotate by the clamping assembly, so that spiral feeding of the conveying assembly is realized.

Description

Feeding device and pencil sharpener

Technical Field

The invention relates to the technical field of material conveying, in particular to a feeding device and a pencil sharpener.

Background

Pencils are tools for writing, recording and the like, and the masses accompany the society for many years. With the wide use of pencils, as a tool for sharpening pencils, which is commonly used in life of people, people need more pencils along with the development of society, and have higher requirements on the time spent for sharpening pencils and the aesthetic degree and durability of sharpening pencils.

The pencil sharpener of the existing pencil is divided into a hand-operated pencil sharpener and an electric pencil sharpener, wherein the hand-operated pencil sharpener generally drives a cutting mechanism to rotate around a pencil by operating a manual rocking handle, and finally the pencil sharpening is finished; the motor-driven pencil sharpener needs to drive the cutter to cut, and can cut continuously under the drive of energy sources such as a battery, so that labor is saved, however, when the pencil-like object such as a pencil is sharpened by the existing electromotive pencil sharpener, the pencil is always required to be continuously fed to the position of the cutting assembly while being pinched by a user, so that the pencil is cut continuously to an expected effect, but the pencil is first: the large staff sweats or the children such as kindergarten are not strong enough to pinch the pencil so that the pencil does not slip in the sharpening process, and the pencil slip can cause the pencil to not be cut; second,: in the cutting process, the pencil is required to be fed continuously according to the condition of cutting inside the shell so that the part to be cut of the pencil is continuously positioned at the position of the milling cutter teeth to realize continuous cutting of the pencil, but the cutting assembly is arranged in the shell, an operator can only realize movement of the pencil according to subjective judgment, a pencil core at the end part of the pencil is extremely easy to break off in the tool rest and is blocked by the blade, the broken core is generally difficult to take out, and the pencil sharpener is damaged only by forcefully knocking the pencil sharpener; third,: the shorter the pencil is cut during use, the more inconvenient the operator holds the pencil when the pencil is used to cut the pencil to a certain length.

The Chinese publication number is: CN 107650561A discloses an automatic pencil sharpener device based on infrared induction, which comprises a housing, a power module, a pencil sharpener module, an infrared receiver, an infrared emitter, a micro motor, a pencil chip box, a pencil feeding device and a pencil hole, and a switch positioned outside the housing; the switch control power supply module supplies power to the infrared receiver, the infrared transmitter and the micro motor, the micro motor rotates positively to drive the pen feeding device to rotate, the pen feeding device rotates to drive the pen inserted into the pen feeding device through the pen hole to rotate, the pen rotating in the pen feeding device cuts the pen through the pencil sharpener module, the infrared sensing device formed by the infrared receiver and the infrared transmitter detects a pen point signal to control the micro motor to rotate reversely, and the micro motor rotates reversely to drive the pen feeding device to eject the cut pen.

According to the automatic pencil sharpener device based on infrared induction, pencil feeding is achieved through the pencil feeding device, however, pencil clamping and loosening are needed to be achieved manually before and after pencil cutting, operation is complex, efficiency is low, meanwhile, clamping degree of the pencil is possibly insufficient manually for young children such as kindergarten, and therefore invalid movement of the pencil feeding device is achieved, namely movement of the pencil feeding device is achieved only, and no pencil is moved.

Disclosure of Invention

In view of the above, the invention provides a feeding device and a pencil sharpener, which aim to solve the problem that the pencil does not move when the existing pencil sharpener needs to manually clamp the pencil so as to cause insufficient manual clamping degree.

In one aspect, the present invention provides a feeding device, including: the clamping assembly, the conveying assembly and the driving mechanism are used for clamping the to-be-conveyed piece; the clamping assembly is provided with clamping jaws for gradually clamping the to-be-conveyed piece; the conveying assembly is sleeved outside the clamping assembly and is rotatably connected with the clamping assembly; the driving mechanism is connected with the clamping assembly and is used for driving the clamping assembly to rotate so as to drive the clamping jaws to clamp the to-be-conveyed piece gradually, and driving the clamping assembly to rotate after the clamping jaws clamp the to-be-conveyed piece so as to drive the conveying assembly to screw.

Further, the feeding device, the clamping assembly further comprises: a rotating disc connected to the drive mechanism; wherein, the rotating disc is provided with a material inserting hole for inserting the piece to be conveyed; each claw is rotatably connected to the rotating disc, and the distance between the rotating shaft of each claw and the axis of the material inserting hole is the same, so that when the claw rotates along with the axis of the material inserting hole, the claw rotates to gradually clamp the to-be-conveyed piece; each claw is rotatably connected with the conveying assembly and used for feeding along the axis of the material inserting hole when the claw rotates around the axis of the material inserting hole along with the rotation of the material inserting hole after the claw clamps the to-be-conveyed piece.

Further, in the feeding device, the first side surface of the claw is provided with an eccentric surface facing the material inserting hole, and the eccentric surface is used for gradually clamping the to-be-conveyed piece; the distance between the eccentric surface and the rotating shaft of the claw gradually increases from one end to the other end; the second side of the claw is provided with a gear section meshed with the conveying assembly, and the gear section is used for driving the conveying assembly to rotate around the axis of the material inserting hole and simultaneously feeding along the axis of the material inserting hole after the eccentric surface clamps the piece to be conveyed.

Further, in the feeding device, the rotating disc is provided with clamping jaw shafts which are arranged in one-to-one correspondence with the clamping jaws, each clamping jaw is provided with a connecting hole, and each clamping jaw is sleeved on the corresponding clamping jaw shaft through the connecting hole; or, be provided with on the rolling disc with the jack catch hole that the jack catch one-to-one set up, each be provided with the pawl axle on the jack catch, it overlaps to locate in the jack catch hole that corresponds.

Further, the above feeding device, the conveying assembly includes: a feeding cylinder and a guide cylinder; the guide cylinder is sleeved outside the feeding cylinder, at least one thread groove is formed in the inner wall of the guide cylinder, sliding protrusions which are arranged in one-to-one correspondence with the thread grooves are arranged on the outer wall of the feeding cylinder and can be slidably clamped in the corresponding thread grooves, and the feeding cylinder is in spiral feeding under the guiding action of the matching of the sliding protrusions and the thread grooves; or, the guide cylinder is sleeved outside the feeding cylinder, at least one sliding protrusion is arranged on the inner wall of the guide cylinder, the outer wall of the feeding cylinder is provided with thread grooves which are arranged in one-to-one correspondence with the sliding protrusions, the sliding protrusions are slidably clamped in the corresponding thread grooves, and the feeding cylinder is in spiral feeding under the guiding action of the sliding protrusions and the thread grooves.

Further, in the feeding device, feeding tooth sections corresponding to the clamping jaws one by one are arranged at the top of the inner wall of the feeding barrel, and the feeding tooth sections are meshed with the gear sections of the clamping jaws.

Further, in the feeding device, a stop piece is arranged on the conveying assembly and is used for stopping feeding of the conveying assembly before the clamping assembly clamps the piece to be conveyed; or, a stop structure is arranged on the conveying assembly and is used for preventing the conveying assembly from being fed before the clamping assembly clamps the to-be-conveyed piece.

Further, the feeding device, the driving mechanism includes: a motor and a transmission member; wherein the motor drives the clamping assembly to rotate through the transmission piece; the transmission part is a multi-stage transmission gear, and an output gear of the transmission part is connected with the clamping assembly and is used for driving the clamping assembly to rotate; the multi-stage transmission gear is internally provided with an intermittent driving wheel and an intermittent driven wheel which are coaxially arranged and are rotatably connected; the intermittent driven wheel is sleeved on a gear shaft of the intermittent driving wheel and rotates along with the intermittent driving wheel, and a resistance piece is arranged between the intermittent driven wheel and the gear shaft and used for enabling the intermittent driven wheel to slip due to resistance when the piece to be conveyed is fed in place.

Further, the feeding device further comprises: installing a detector, conveying the detector to the position and controlling the panel; the installation detector is arranged in the conveying assembly and is used for detecting whether the to-be-conveyed piece is inserted into the clamping assembly or not; the conveying in-place detector is arranged on the conveying assembly and is used for detecting whether the conveying assembly reaches two end positions of the movement stroke of the conveying assembly or not and sending the position state to the control panel; the control board is electrically connected with the installation detector and the conveying in-place detector, and is used for receiving the detection result detected by the installation detector and the position state emitted by the conveying in-place detector, and controlling the driving mechanism according to the detection result and the position signal so as to control the rotation of the clamping assembly.

According to the feeding device provided by the invention, the clamping jaws on the clamping assembly are enabled to clamp or loosen the piece to be conveyed step by step through the rotation of the clamping assembly; the clamping assembly is driven to rotate through the driving mechanism, then the workpiece to be conveyed is clamped, and after the clamping jaw clamps the workpiece to be conveyed, the clamping assembly is driven to rotate, and then screw feeding of the conveying assembly is achieved, so that the clamping assembly in the conveying assembly and the movement of the workpiece to be conveyed are achieved, automatic feeding and return stroke of the workpiece to be conveyed are achieved, namely, automatic feeding and return stroke after cutting of a pencil are achieved, the operation is simple and convenient, the pencil sharpener is compared with the pencil sharpener in the prior art, automatic clamping of the pencil is achieved through the clamping assembly, operation of an operator is not needed, meanwhile, the phenomenon that the pencil is not moved due to insufficient manual clamping of children such as kindergarten can be avoided, and conveying efficiency of the feeding device is greatly improved.

In particular, according to the feeding device provided by the embodiment, the detection of the installation state of the to-be-conveyed piece is realized through the installation detector and the control panel, so that the judgment of operators is saved, and meanwhile, as the clamping assembly is arranged in the conveying assembly and the to-be-conveyed piece is inserted into the clamping assembly, the installation state of the to-be-conveyed piece is not easy to judge, the installation state of the to-be-conveyed piece can be accurately judged through the installation detector, and the invalid movement of the conveying assembly when the operator does not clamp the to-be-conveyed piece due to inaccurate judgment is avoided; in addition, the detection of the moving position of the conveying assembly is realized through the conveying in-place detector and the control board, so that the automatic reciprocating movement of the conveying assembly is realized, the automatic reciprocating movement of a piece to be conveyed is realized, and the efficiency of the feeding device is improved.

In another aspect, the present invention also provides a pencil sharpener, including: a cutting assembly and the feeding device; the feeding device is arranged on one side of the cutting assembly and used for conveying the pencil into the cutting assembly so as to cut the end portion of the pencil through the cutting assembly.

Since the feeding device has the above effects, the pencil sharpener with the feeding device also has corresponding technical effects.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

Fig. 1 is a schematic structural diagram of a feeding device according to an embodiment of the present invention;

FIG. 2 is a partial exploded view of a feeder provided in an embodiment of the present invention;

FIG. 3 is a schematic view of a clamping assembly according to an embodiment of the present invention;

FIG. 4 is an exploded view of a clamping assembly provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic structural view of a claw according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a conveying assembly according to an embodiment of the present invention;

FIG. 7 is an exploded view of a delivery assembly provided in an embodiment of the present invention;

FIG. 8 is a schematic structural view of a feeder barrel according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a guide cylinder according to an embodiment of the present invention;

FIG. 10 is a top view of a guide cylinder according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a feeding cover according to an embodiment of the present invention;

Fig. 12 is a first schematic structural view of a driving mechanism according to an embodiment of the present invention;

fig. 13 is a second schematic structural view of a driving mechanism according to an embodiment of the present invention;

Fig. 14 is a schematic structural diagram of a transmission member according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of an intermittent driving wheel and an intermittent driven wheel according to an embodiment of the present invention;

Fig. 16 is a schematic structural view of a pencil sharpener according to an embodiment of the present invention;

FIG. 17 is a schematic structural diagram of a detecting member according to an embodiment of the present invention;

Fig. 18 is a schematic structural diagram of a detecting member according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

Feeding device embodiment:

Referring to fig. 1 and 2, which illustrate a preferred structure of a feeding device provided in an embodiment of the present invention, the feeding device 100 includes: a clamping assembly 1 for clamping a member 4 to be conveyed, a conveying assembly 2, a driving mechanism 3, a stopper (not shown in the drawing), a mounting detector 5, a conveyance-in-place detector 6, and a control board 7; wherein the clamping assembly 1 is provided with jaws 12 for gradually clamping the piece 4 to be conveyed. The conveying component 2 is sleeved outside the clamping component 1 and is rotatably connected with the clamping component 1. The stop member is arranged on the conveying component 2 and is used for applying resistance to the conveying component 2 to prevent the conveying component 2 from feeding before the clamping component 1 clamps the piece 4 to be conveyed, so that ineffective movement of the conveying component 2 before the piece 4 to be conveyed is clamped is further avoided, and the working efficiency of the feeding device 100 is improved. The driving mechanism 3 is connected with the clamping assembly 1 and is used for driving the clamping assembly 1 to rotate so as to drive the clamping jaw 12 to clamp the piece 4 to be conveyed gradually, driving the conveying assembly 2 to screw to drive the piece 4 to be conveyed to move after the clamping assembly 1 clamps the piece 4 to be conveyed, and if the piece 4 to be conveyed is not placed in the clamping assembly 1, the driving mechanism 3 drives the clamping assembly 1 to rotate, and no piece 4 to be conveyed in the clamping assembly 1 causes a slipping phenomenon between the clamping assembly 1 and the conveying assembly 2, so that the conveying assembly 2 cannot rotate when the clamping assembly 1 does not clamp the piece 4 to be conveyed, namely, the clamping assembly 1 cannot rotate, and therefore invalid rotation and feeding of the conveying assembly 2 are avoided. Preferably, the driving mechanism 3 drives the clamping assembly 1 to rotate intermittently, so that the conveying assembly 2 is intermittently screw-fed, that is, the piece to be conveyed 4 is intermittently moved, so that the piece to be conveyed 4 is processed when the piece to be conveyed 4 stops moving, for example, after the pencil moves to a cutting knife position for a certain distance, the cutting knife cuts the end of the pencil until a certain conicity, and then the conveying assembly 2 is screw-fed again, so that the pencil moves to the cutting knife position for a certain distance, and the cycle is performed until the cutting is completed or until the conveying assembly 2 moves to a position above the cutting knife. The installation detector 5 is arranged in the conveying assembly 2, and detects whether the piece 4 to be conveyed is inserted into the clamping group price 1 or not through light rays. A conveyance-in-place detector 6 is provided on the conveyance assembly 2 for detecting whether the conveyance assembly 2 reaches both end positions of its movement stroke, and sends the position state of the conveyance assembly 2 to the control board 7. The control board 7 is electrically connected with the installation detector 5 and the in-place conveying detector 6, and is used for receiving the installation state detected by the installation detector 5 and the position signal emitted by the in-place conveying detector 6, and controlling the driving mechanism 3 according to the installation state and the position signal to control the forward rotation, the reverse rotation or the stop rotation of the clamping assembly 1 so as to control the forward movement, the return movement and the stop movement of the conveying assembly 2. The member to be conveyed 4 in the present embodiment may be not only a rod-like structure such as a pencil, but also a plate-like structure such as a disk structure.

With continued reference to fig. 2, the mounting detector 5 includes an infrared emitter 51 and an infrared receiver 52 respectively provided at both sides of the member to be conveyed 4, the infrared emitter 51 being configured to emit infrared rays, the infrared receiver 52 being configured to receive the infrared rays emitted from the infrared emitter 51 and to send a detection result of the member to be conveyed 4 to the control board 7; the to-be-conveyed piece 4 is in a rod-shaped structure and is clamped by the clamping component 1, the infrared emitter 51 emits infrared rays, if the to-be-conveyed piece 4 is installed in place and is inserted between the infrared emitter 51 and the infrared receiver 52, the infrared receiver 52 cannot receive the infrared rays due to the fact that the infrared receiver 52 is blocked from transmitting the infrared rays, and the infrared receiver 52 transmits a signal for inserting the to-be-conveyed piece 4 in place to the control board 7; on the contrary, when the to-be-conveyed piece 4 is not inserted between the infrared emitter 51 and the infrared receiver 52, the infrared rays emitted by the infrared emitter 51 are transmitted to the infrared receiver 52 without being blocked by the to-be-conveyed piece 4, and after the infrared receiver 52 receives the infrared rays, the to-be-conveyed piece 4 is not inserted in-place signals are transmitted to the control board 7.

Referring to fig. 3 and 4, a preferred construction of the clamping assembly is shown. The clamping assembly 1 comprises: a rotating disc 11 and a claw 12; the rotating disc 11 is rotatably connected with the driving mechanism 3, and a material inserting hole 111 is formed in the rotating disc 11 and is used for inserting the to-be-conveyed piece 4. To avoid interference when the claws 12 move synchronously, the claws 12 are rotatably connected to the rotating disk 11 and the distances between the rotating shafts of the claws 12 and the axis of the insertion hole 111 are the same so as to ensure that the claws 12 rotate to clamp the to-be-conveyed piece 4 gradually when the claws 12 rotate around the axis of the insertion hole 111 along with the rotating disk 11; preferably, the claws 12 are uniformly distributed on the same circumference with the axis of the insertion hole 111 as the center of the circle; in order to save cost and ensure clamping of the piece 4 to be conveyed, the number of the clamping claws 12 is three, and any two of the three clamping claw shafts 113 are arranged at 120 degrees. Each jaw 12 is rotatably connected to the conveying assembly 2 for feeding along the axis of the insertion hole 111 as the jaw 12 rotates around the axis of the insertion hole 111 along with the rotating disc 11 after the jaw 12 clamps the part 4 to be conveyed.

With continued reference to fig. 4, the rotatable disk 11 is of a disc-type construction; preferably, the insertion hole 111 is provided at a central position of the rotary disk 11 so as to coaxially arrange the member to be conveyed 4 and the rotary disk 11, thereby allowing the claws 12 to be uniformly arranged in the circumferential direction of the member to be conveyed 4 so as to uniformly clamp the member to be conveyed 4; in order to realize the linkage between the claws 12, preferably, the rotating disc 11 is provided with claw shafts 113 which are arranged in one-to-one correspondence with the claws 12, and each claw 12 is sleeved on the corresponding claw shaft 113, so that the rotation of each claw shaft 113 on the rotating disc 11 drives each claw 12 to synchronously rotate, and then each claw 12 is matched to realize the clamping of the to-be-conveyed piece 4; each detent shaft 113 is distributed on the same circumference taking the axis of the material insertion hole 111 as the center of a circle; more preferably, the respective claw shafts 113 are uniformly distributed on the same circumference with the axis of the insertion hole 111 as the center of a circle, for example, for the arrangement of three claws 12, the three claw shafts 113 are arranged at 120 ° between any two; of course, the rotating disc 11 may be provided with jaw holes corresponding to the jaws 12 one by one, and each jaw is provided with a jaw shaft which is sleeved in the corresponding jaw hole so as to realize transmission between the two. The upper surface (relative to the position shown in fig. 4) on the same side of the jaw shaft 113 on the rotating disc 11 is provided with a positioning protrusion 114 for clamping the conveying assembly 2 so as to position the conveying assembly 2, and meanwhile, the screw feeding of the conveying assembly 2 drives the feeding of the rotating disc 11, so that each jaw 12 arranged on the rotating disc 11 and the to-be-conveyed piece 4 clamped by each jaw 12 are driven to feed, and the up-and-down movement of the to-be-conveyed piece 4 is realized. In order to ensure that the driving mechanism 3 drives the rotating disc 11 to rotate, the outer wall of the rotating disc 11 is provided with a rotating tooth segment 112, and the rotating tooth segment 112 is at least one tooth so as to be meshed with an output gear 322 arranged on a main shaft 323 in the driving mechanism 3, and then the rotating disc 11 is driven to rotate through the output gear 322.

Referring to fig. 4 and 5, a first side (right side as viewed in fig. 5) of the claw 12 is provided with an eccentric surface 121 facing the insertion hole 111, and a second side (left side as viewed in fig. 5) is provided with a gear section 122 engaged with the conveying assembly 2 for feeding along the axis of the insertion hole 111 while driving the conveying assembly 2 to rotate around the axis of the insertion hole 111 after the claw 12 clamps the member 4 to be conveyed; in order to avoid interference between the jaws 12 and the piece 4 to be conveyed during rotation, an involute segment 123 is preferably provided between the eccentric surface 121 and the gear segment 122; the axis position of the rotation shaft of the claw 12, namely the claw shaft 113 is provided with a connecting hole 124 for sleeving the claw shaft 113; the jaws 12 are also provided with a process hole 125 to facilitate positioning of the jaws 12 during processing.

Specifically, the eccentric surface 121 is an arc surface, the center of the eccentric surface 121 is different from the axis of the rotation shaft of the claw 12, namely, the axis of the claw shaft 113, namely, the axis of the connecting hole 124, and the distance between the eccentric surface 121 of the eccentric surface 121 and the axis of the rotation shaft of the claw 12, namely, the axis of the connecting hole 124, is gradually increased from the lower end to the upper end, so that the minimum distance between the eccentric surface 121 and the material inserting hole 111 is adjusted through the rotation of the claw 12, and further, the claw 12 gradually clamps or gradually loosens the conveying member 4 along with the rotation of the eccentric surface 121; preferably, at least one single claw 1211 is arranged on the eccentric surface 121, and a slot 1212 is arranged between each single claw for clamping the piece 4 to be conveyed; the eccentric surface 121 is higher than the other positions of the jaws 12 in order to further increase the gripping degree of the articles 4 to be conveyed. The second side of each jaw 12 is a sector plate taking the axis of the rotation shaft of the jaw 12, namely the axis of the jaw shaft 113 as an axis, the outer wall of the sector plate is provided with a plurality of teeth, namely a gear section 122, and the gear section 122 is matched with a feeding tooth section 211 of the inner wall of the feeding barrel 21 so as to drive the conveying assembly 2 to screw when the eccentric surface 121 of the jaw 12 clamps the workpiece 4 to be conveyed. The involute 123 on the jaw 12 has an involute outer profile with any cross section, and the connecting hole 124 and the process hole 125 are through holes.

Referring to fig. 6 and 7, which illustrate a preferred construction of a delivery assembly provided by an embodiment of the present invention, the delivery assembly 2 comprises: a feed cylinder 21, a guide cylinder 22, a feed cap 23, and a fixing piece 24; wherein the feed cylinder 21 is rotatably connected to the jaws 12 of the clamping assembly 1 for rotating the feed cylinder 21 after clamping the parts 4 to be conveyed. The guide cylinder 22 is sleeved outside the feeding cylinder 21, at least one thread groove 221 is formed in the inner wall of the guide cylinder 22, sliding protrusions 212 which are arranged in one-to-one correspondence with the thread grooves 221 are arranged on the outer wall of the feeding cylinder 21 and are clamped and matched with the thread grooves 221, so that each sliding protrusion 212 can be clamped in the corresponding thread groove 221 in a sliding manner, under the guiding action of the matching of the sliding protrusions 212 and the thread grooves 221, the feeding cylinder 21 is in spiral feeding, namely, the sliding protrusions 212 are driven to be in spiral feeding along the thread grooves 221 through rotation of the feeding cylinder 21, and further the feeding cylinder 21 is in spiral feeding relative to the guide cylinder 22, so that the clamping assembly 1 is driven to move, and movement of a piece 4 to be conveyed is realized. The feeding cover 23 is disposed above the feeding barrel 21, and is used for blocking the entry of foreign objects, and further blocking the interference of the parts in the feeding device 100. The fixing member 24 is disposed below the guide cylinder 22, and is used for fixing the guide cylinder 22, so that the feeding cylinder 21 moves relative to the fixing member 24 to drive the member to be conveyed 4 to move, for example, a pencil relative to the milling cutter teeth of the cutting assembly 200, so that the cutting blade of the cutting assembly 200 rotates around the milling cutter teeth to cut the pencil. Of course, the sliding protrusions arranged on the inner wall of the guide cylinder 22 can be clamped and matched in the thread grooves arranged on the outer wall of the feeding cylinder 21, namely, the guide cylinder 22 is sleeved outside the feeding cylinder 21, at least one sliding protrusion is arranged on the inner wall of the guide cylinder 22, the thread grooves which are arranged in one-to-one correspondence with the sliding protrusions are arranged on the outer wall of the feeding cylinder 21 and are clamped and matched with the thread grooves, so that each sliding protrusion 212 can be slidably clamped in the corresponding thread groove 221, and under the guiding action of the matching of the sliding protrusions and the thread grooves, the feeding cylinder 21 is in spiral feeding, namely, the thread grooves are driven to be in spiral feeding under the guiding action of the sliding protrusions under the driving of the feeding cylinder 21.

With continued reference to fig. 7, the fixing member 24 may be of cylindrical structure and provided with a through hole for the passage of the member 4 to be conveyed; for the pencil sharpener, the milling cutter teeth of the cutting assembly 200 arranged in the housing can be used for cutting the pencil or used as the fixing piece 24 so as to fix the guide cylinder 22, and further the feeding cylinder 21 moves relative to the milling cutter teeth to drive the piece 4 to be conveyed, namely the pencil, to move relative to the milling cutter teeth, so that the pencil is cut by the cutting blade of the cutting assembly 200; preferably, the top end of the fixing member 24 is provided with at least one first connecting lug 241 along the circumferential direction thereof, the bottom end of the guide cylinder 22 is provided with a second connecting lug 223 corresponding to the first connecting lug 241, and the second connecting lug 223 is connected with the first connecting lug 241 corresponding thereto for fixing the guide cylinder 22; further preferably, the first connection lug 241 is connected with its corresponding second connection lug 223 by a bolt so as to avoid rotation of the guide cylinder 22; in the present embodiment, the first connection lug 241 and the second connection lug 223 are both provided. To facilitate detection by the in-place detector 6, the in-place detector 6 is disposed at the top end of the fixing member 24; preferably, the top end of the fixing member 24 is provided with two detecting grooves 242 respectively located at both sides of the member to be conveyed 4 for fixing the infrared emitter 51 and the infrared receiver 52 respectively.

Referring to fig. 8, a schematic structural diagram of a feeding barrel according to an embodiment of the present invention is shown; the feeding cylinder 21 is a cylindrical shell with two open ends, and a supporting plate 213 is arranged at the bottom end and is used for supporting the clamping assembly 1, particularly the clamping jaw 12; to facilitate the movement of the feeding barrel 21, the feeding barrel 21 is preferably sleeved outside the clamping assembly 1 and meshed with the clamping assembly; further preferably, feeding tooth sections 211 are arranged on the top of the inner wall of the feeding barrel 21 in a one-to-one correspondence with the clamping jaws 12, and the feeding tooth sections 211 are meshed with the gear sections 122 on the clamping jaws 12; in order to avoid interference between the feeding cylinder 21 and the output gear 322 in the driving mechanism 3, a notch 214 is arranged on the side wall of the feeding cylinder 21 so as to facilitate smooth transmission of power; the outer wall of the feed cylinder 21 is provided with at least one sliding projection 212 for screw feeding along the screw groove 221.

Specifically, the feed tooth segment 211 is at least one tooth, and the number of teeth is greater than the number of teeth of the gear segment 122 on the pawl 12; the sliding protrusion 212 is a protrusion block or a spiral strip protrusion matched with the thread groove 221, namely a thread protrusion, the cross section of the sliding protrusion 212 is circular or elliptical, and the sliding protrusion 212 is inserted into the corresponding thread groove 221 and is clamped and matched with the thread groove 221 with the circular or rectangular cross section. The support plate 213 is provided with a rotation hole 2131, which is a through hole, for passing through the detent shaft 113 and rotating around the insertion hole 111 in the rotation hole 2131; the supporting plate 213 is further provided with positioning holes 2132 corresponding to the process holes 125 on the jaws 12 one by one so that the jaws 12 can be accurately mounted. In order to avoid interference between the feeding cylinder 21 and the output gear 322 in the driving mechanism 3, a notch 214 is provided on the side wall of the feeding cylinder 21 for smooth power transmission.

Referring to fig. 9, which is a schematic structural view of a guide cylinder provided in an embodiment of the present invention, the guide cylinder 22 has a cylindrical structure with an opening at one end (an upper end as shown in fig. 9), a charging hole 224 is provided at a closed end (a lower end as shown in fig. 9), and the charging hole 224 is a through hole for inserting the member 4 to be conveyed. The clamping assembly 1 and the feeding cylinder 21 are both arranged in the guide cylinder 22, the feeding cylinder 21 is arranged above the rotating disc 11, and the feeding cylinder 21 is clamped by the positioning protrusion 114 on the rotating disc 11, so that the rotating disc 11 and the clamping jaw 12 are driven to move when the feeding cylinder 21 is in spiral feeding; three claw shafts 113 pass through the rotation holes 2131 of the support plate 213 to fix the claws 12 provided on the support plate 213 of the feed cylinder 21; in order to facilitate the rotatable connection of the rotating disk 11 disposed in the guide cylinder 22 with the output gear 322 disposed in the driving mechanism 3 outside the guide cylinder 22, preferably, the side wall of the guide cylinder 22 is provided with a square hole 225; in order to improve stability of the main shaft 323, it is preferable that the sidewall of the guide cylinder 22 is provided with a positioning hole 226, which is sleeved outside one end of the main shaft 323.

With continued reference to fig. 9, the thread groove 221 provided on the guide cylinder 22 is implemented in two ways, namely, the guide cylinder 22 is integrally formed through a casting process, and in addition, a spiral body (not shown in the drawing) is arranged on the guide cylinder 22, and at least one thread groove 221 is formed between the spiral body and the inner wall of the guide cylinder 22, but the guide cylinder has higher cost and poor driving effect; in order to reduce the cost and to make the feeding cylinder 21 run smoothly in the guide cylinder 22, the guide cylinder 22 and the at least one thread groove 221 of the present embodiment are integrally formed by a casting process. To facilitate detection by the in-place detector 6, the in-place detector 6 is provided on the guide cylinder 22, and preferably, a fixing groove 222 for fixing the in-place detector 6 is provided on the guide cylinder 22; to ensure the stability of the feed cylinder 21, the number of thread grooves 221 is three, each thread groove 221 being less than 1/3 turn, so as to ensure that the square hole 225 is arranged to rotate the feed cylinder 21 less than 1/3 turn when it is threaded or returned.

Specifically, to further improve the running stability of the guide cylinder 22, the lead angle of each thread groove 221 on any cross section of the guide cylinder 22 is the same (three thread grooves 221 are moved to the same position and can be overlapped), so that the feeding cylinder 21 moves smoothly in the guide cylinder 22; however, if the lead angle of each part in any one of the three thread grooves 221 is different, when the feeding barrel 21 rotates at a constant speed, the movement speed of the feeding barrel 21 is not uniform under the driving of the three thread grooves 221, which is not beneficial to the treatment of the workpiece 4 to be conveyed, such as the cutting of the end of the pencil, so that the cutting effect of the end of the pencil is poor; further preferably, the lead angle between the screw grooves 221 is equal, thereby further improving the smoothness of the operation of the feed cylinder 21.

With continued reference to fig. 9, the three thread grooves 221 have equal shortest distances to each other. Specifically, the three thread grooves 221 are a first thread groove 2211, a second thread groove 2212, and a third thread groove 2213, respectively, and the second thread groove 2212 is disposed between the first thread groove 2211 and the third thread groove 2213; the feed cylinder 21 is smoothly moved in the guide cylinder 22 by the driving forces from the three directions of the three sliding protrusions 212, but in order to further smooth the movement of the feed cylinder 21 in the guide cylinder 22, it is required that the shortest distance between the three screw grooves 221 is equal to each other, that is, the shortest pitch between the first screw groove 2211 and the second screw groove 2212 is the same as the shortest pitch between the second screw groove 2212 and the third screw groove 2213, and the shortest pitch between the third screw groove 2213 and the first screw groove 2211 is the same as the shortest pitch between the third screw groove 2213 and the second screw groove 2212. The included angle between the three outlets 22110, 22120 and 22130 of the three thread grooves 221 arranged in this way on any cross section of the guide cylinder 22 is 120 degrees, and correspondingly, the included angle between the three outlets 22110, 22120 and 22130 of the three sliding protrusions 212 arranged on the feeding cylinder 21 on any cross section of the feeding cylinder 21 is 120 degrees, so that the feeding cylinder 21 is subjected to stable and balanced driving force under the action of the three sliding protrusions 212 arranged at 120 degrees, and the feeding cylinder 21 runs in the guide cylinder 22 more stably.

With continued reference to fig. 9 and 10, each of the thread grooves 221 communicates with an end face of at least one of the two ends of the guide cylinder 22. Specifically, for easy installation, the three thread grooves 221 are communicated with one end surface of two ends of the guide cylinder 21, preferably with an upper end surface of the guide cylinder 21, to form three outlets 22110, 22120, 22130, and when the feeding cylinder 21 is installed, the three outlets 22110, 22120, 22130 are only required to be sleeved on the guide cylinder 22, and the sliding protrusions 212 are in one-to-one correspondence with the positions of the three outlets 22110, 22120, 22130, and then the three outlets 22120, 22130 are installed. Preferably, when the guide cylinder 22 is a cylindrical housing with both ends open, the three thread grooves 221 are communicated with both end surfaces of both ends of the guide cylinder 22; preferably, grease is disposed in each thread groove 221, and the grease can greatly reduce friction between the sliding protrusion 212 and the corresponding thread groove 221, which is beneficial to the operation of the feeding barrel and reduces mechanical loss of the feeding device 100 to a certain extent.

Referring to fig. 11, which is a schematic structural diagram of a feeding cover provided in an embodiment of the present invention, a feeding hole 231 is provided on the feeding cover 23 for inserting a piece 4 to be conveyed.

Specifically, the feeding cover 23 has a circular plate structure, the outer wall of which is clamped in the guide cylinder 22, and moves up and down along with the feeding cylinder 21 and the member 4 to be conveyed due to the action of gravity and pressure; the feeding hole 231 is arranged at the center of the feeding cover 23 and is coaxial with the inserting hole 111, and the diameter of the feeding hole is the same as that of the inserting hole 111, so that the piece 4 to be conveyed is sequentially inserted into the feeding hole 231 and the inserting hole 111; in order to further ensure the stability of each claw 12, the feeding cover 23 is further provided with shaft grooves 232 corresponding to the claw shafts 113 one by one, and the shaft grooves are used for clamping the claw shafts 113 so as to ensure the stability of the claw shafts 113 and further ensure the stability of the claws 12 sleeved on the claw shafts 113.

With continued reference to fig. 6 to 11, the piece 4 to be conveyed is mounted in the insertion hole 111 of the rotary disk 11 and clamped by three claws 12 in a matching manner; when the driving mechanism 3 drives the rotating disc 11 to rotate, the rotating disc 11 synchronously drives the three claws 12 to revolve around the material inserting hole 111, the gear sections 122 at the second ends of the three claws 12 are meshed with the feeding tooth sections 211 corresponding to the gear sections 122 on the feeding barrel 21, and the feeding barrel 21 and the guiding barrel 22 are relatively static due to the resistance of the hard piece and the stopping piece, so that the three claws 12 rotate around the rotating shaft, namely the claw shaft 113, and the minimum distance between the eccentric surfaces 121 of the three claws 12 and the axis of the material inserting hole 111 is gradually reduced until the three claws 12 clamp the piece 4 to be conveyed through the single claw 1211; after the piece 4 to be conveyed is clamped, as the outer wall of the piece 4 to be conveyed is made of hard materials, the three clamping claws 12 cannot rotate, and then in the revolution process of the three clamping claws 12 around the inserting hole 111, the gear sections 122 at the second ends of the three clamping claws 12 are meshed with the feeding tooth sections 211 corresponding to the gear sections 122 on the feeding cylinder 21, so that the feeding cylinder 21 rotates while counteracting the resistance of the stop piece, the three sliding protrusions 212 on the feeding cylinder 21 rotate simultaneously, the three thread grooves 221 simultaneously generate driving forces for the three sliding protrusions 212, and the feeding cylinder 21 moves in the guide cylinder 22 while spiral feeding, namely rotating under the action of the driving forces in three directions of the three sliding protrusions 212. The arrangement of the plurality of thread grooves 221 and the sliding protrusions 212 ensures that the feeding barrel 21 moves under the action of driving forces in a plurality of directions, so that the stress of the feeding barrel 21 is more uniform, the friction force is reduced, the moving stability of the feeding barrel 21 is ensured, the vibration-resistant effect of the feeding barrel 21 during movement is improved, and the stability of conveying the to-be-conveyed piece 4 is improved.

Wherein each claw 12 corresponds to a planet wheel in the planetary gear mechanism, the piece to be conveyed 4 corresponds to a sun wheel, the rotating disc 11 corresponds to a planet carrier, the feeding cylinder 21 corresponds to an outer gear ring, and clamping and loosening of the piece to be conveyed correspond to fixing of the outer gear ring, so that each claw 12 and the piece to be conveyed 4 relatively rotate, the minimum distance between the eccentric surface of each claw 12 and the material inserting hole 111 is synchronously reduced or increased, and further clamping or loosening of the piece to be conveyed 4 is realized; for each claw 12 clamping the piece 4 to be conveyed, the planetary gear and the sun gear, namely the claw 12, are fixedly connected with the piece 4 to be conveyed, so that the planetary gear and the sun gear are relatively static, and further the planetary gear revolves to drive the outer gear ring, namely the feeding cylinder 21 to rotate, so that the feeding cylinder 21 is spirally fed, and the rotating disc 11, the claw 12 and the piece 4 to be conveyed in the feeding cylinder 21 move up and down.

Referring to fig. 12 and 13, which show a preferred structure of the driving mechanism provided in the embodiment of the present invention, the driving mechanism 3 includes: a motor 31 and a transmission member 32; the motor 31 drives the rotation of the clamping assembly 1 via the transmission 32. Specifically, the motor 31 may control the operation state and the operation direction of the motor 31 by the control board 7 so that the rotation state of the clamping assembly 1 is driven by the transmission member 32 to correspond to the position of the member 4 to be conveyed; preferably, the transmission member 32 intermittently drives the rotation of the clamping assembly 1 so as to process the pieces 4 to be conveyed while they are fed.

With continued reference to fig. 12 and 13, the transmission member 32 is a multi-stage transmission gear, and an input gear 321 of the multi-stage transmission gear is connected to the motor 31 so as to drive the multi-stage transmission gear to rotate; an output gear 322 of the multi-stage transmission gear is connected with the clamping assembly 1 and is used for driving the clamping assembly 1 to rotate. Preferably, a spindle 323 is provided on the output gear 322 of the multi-stage transmission gear, so that the sequentially engaged multi-stage gears 324 are driven to rotate by the motor 31, and the spindle 323 is driven to rotate by the sequentially engaged multi-stage gears 324, so that the output gear 322 is driven to rotate the clamping assembly 1. One end (lower end as shown in fig. 13) of the main shaft 323 is fixed on an output gear 3241 of the sequentially engaged multi-stage gears 324 through a spline, and the other end is fixed on an output gear 322 through a spline, so that synchronous rotation of the sequentially engaged multi-stage gears 324 and the output gear 322 is realized, and the main shaft 323 is used for driving the output gear 322 to rotate, so that the rotating disc 11 engaged with the output gear 322 is driven to rotate. To avoid the influence of external force or interference with foreign objects on the sequentially engaged multi-stage gears 324, a transmission housing 325 is sleeved outside the sequentially engaged multi-stage gears 324. The height of the output gear 3222 of the multi-stage transmission gear is greater than or equal to the maximum distance that the rotating disk 22 of the clamping assembly 1 reciprocates, i.e., the height of the output gear 3222 of the multi-stage transmission gear is greater than or equal to the maximum distance that the feed cylinder 21 reciprocates.

Referring to fig. 14 and 15, the sequentially engaged multi-stage gears 324 may be a gear transmission of a multi-stage gear combination of at least two stages, power transmission is achieved through engagement between gears, and an input gear of the sequentially engaged multi-stage gears 324 serves as an input gear 321 of the driving member 32 and is connected with the motor 31 so as to drive rotation of the driving member 32. In order to realize intermittent feeding of the to-be-conveyed member 4, namely, intermittent rotation of the output gear 322, preferably, a multi-stage gear 324 which is sequentially meshed in the multi-stage transmission gear is provided with an intermittent driving wheel 325 and an intermittent driven wheel 326 which are coaxially arranged, the intermittent driving wheel 325 and the intermittent driven wheel 326 are rotatably connected, the intermittent driven wheel 326 is sleeved on a gear shaft 327 of the intermittent driving wheel 325 and rotates along with the intermittent driving wheel 326, a resistance member is arranged between the intermittent driven wheel 326 and the gear shaft 327, for example, resistance oil can be coated between the intermittent driven wheel 326 and the gear shaft 327, and the intermittent driven wheel 326 is subjected to resistance force to enable the intermittent driven wheel 326 to skid, namely, stop rotating, so that the conveying assembly 2 stops moving, at the moment, the to-be-conveyed member 4 is processed, for example, a pencil is cut through a milling cutter tooth, and after the processing, the to-be-conveyed member 4 is fed again, namely, the output gear 3215 of the multi-stage transmission gear 321 is intermittently driven to rotate, and then the to be-conveyed member 4 is alternately fed and processed; for example, for a pencil sharpener, after a pencil is conveyed to a certain position of a cutter tooth, the cutter of the cutter assembly 200 needs to cut the pencil, before the pencil is cut, the cutter tooth prevents the pencil from being conveyed, that is, the cutter tooth applies resistance to the pencil, so that the intermittent driven wheel 326 and the gear shaft 327 slip, so that the intermittent driven wheel 326 and the gear shaft 327 rotate relatively, that is, the intermittent driven wheel 326 stops rotating, so that the output gear 3215 and the output gear 322 stop rotating, further, the rotating disc 11 in the clamping assembly 1 stops rotating, so that the pencil stops rotating, and meanwhile, after the cutter of the cutter assembly 200 cuts the end of the pencil until a certain conicity, that is, the resistance between the cutter tooth and the pencil disappears, the intermittent driven wheel 326 and the gear shaft 327 are relatively static, that is, the intermittent driven wheel 326 rotates synchronously with the intermittent driving wheel 325, that is, that the intermittent driven wheel 326 drives the output gear 322 to rotate, and the rotating disc 11 is circulated until the cutting is completed or until the lower end position is reached, the feeding and the processing of the conveying member 4 is completed. Wherein the intermittent drive wheel 325 is an input gear or an intermediate gear between the input gear and the output gear in the sequentially engaged multi-stage gears 324; intermittent driven wheel 326 is meshed with its corresponding lower gear to drive output gear 322 to rotate; the lower gears are lower gears corresponding to the input gears of the sequentially engaged multiple gears 324 in that the order of engagement from the input gears of the sequentially engaged multiple gears 324 to the output gears of the sequentially engaged multiple gears 324 is from top to bottom, i.e., the gears engaged with the input gears of the sequentially engaged multiple gears 324.

The in-place conveying detector 6 provided in the embodiment comprises two limit switches respectively arranged at the lower end position and the upper end position of the guide cylinder 22, when the feeding cylinder 21 contacts or approaches the limit switches, the connecting rod of the limit switches drives the contacts of the switches to cause the closed contacts to be disconnected or the opened contacts to be closed, and the drive of the driving mechanism 3 is controlled by the control panel 7 through the change of the opening and closing states of the contacts of the switches. Wherein the control board 7 is a PCB control board.

The stopper in this embodiment is a spring provided on the conveying assembly 2 and a stationary member of the feeding device such as a housing so as to apply a resistance to the conveying assembly 2; preferably, the stopper may be a compression spring, which is disposed below the feeding cylinder 21 of the conveying assembly 2, one end of the compression spring is connected to the feeding cylinder 21 of the conveying assembly 2, and the other end of the compression spring is connected to the guide cylinder 22 or the fixing member 24 of the conveying assembly 2, so that resistance is applied to the feeding cylinder 21, so that the feeding cylinder 21 is prevented from approaching the fixing member 24 under the resistance of the stopper, that is, the feeding cylinder 21 is prevented from moving downwards, and thus, the spiral feeding of the feeding cylinder 21 before the clamping jaw 12 clamps the piece 4 to be conveyed is avoided, so that ineffective movement of the feeding cylinder 21 in the conveying assembly 2 before the clamping jaw clamps the piece 4 to be conveyed is further avoided, and thus, the working efficiency of the feeding device is improved, and meanwhile, the utilization rate of the driving mechanism 3 is improved; of course, the stopper may be an extension spring, which is disposed above the feeding cylinder 21 of the conveying assembly 2, and one end of which is connected to the feeding cylinder 21 of the conveying assembly 2 and the other end of which is connected to the guide cylinder 22 of the conveying assembly 2; in addition, the stop member may be realized by a stop structure provided on the guide cylinder 22 of the conveying assembly, the stop structure being provided at the bottom end of the feed cylinder 21 at an initial position, the initial position being a position before the insertion of the member 4 to be conveyed; the stop structure may be a protruding structure in order to prevent the feed drum 21 from being screw-fed before the jaws 12 grip the piece 4 to be conveyed.

The working process of the feeding device 100 provided in this embodiment is as follows:

And (3) feeding: firstly, an operator inserts the to-be-conveyed piece 4 into the holes of the fixing piece 24 after sequentially passing through the feeding hole 231 of the feeding cover 23, the clamping space between the three clamping claws 12, the rotating hole 2131 of the supporting plate 213 on the feeding cylinder 21, the inserting hole 111 of the rotating disc 11 and the charging hole 224 of the guiding cylinder 22, so that the to-be-conveyed piece 4 is processed by the parts below the fixing piece 24, for example, the pencil is cut by the cutting knife of the cutting assembly 200, and the fixing piece 24 also positions the to-be-conveyed piece 4; after the conveying member 4 is inserted and installed in place, the infrared emitter 51 emits infrared rays, the infrared receiver 52 detects the infrared rays, the infrared receiver 52 cannot receive the infrared rays due to the fact that the insertion of the conveying member 4 blocks the transmission of the infrared rays, and the infrared receiver 52 sends an installed signal to the control panel 7; then, the control board 7 controls the motor 31 to rotate forward, so that the multi-stage transmission gear 321 drives the output gear 322 to rotate anticlockwise through the main shaft 323, the rotating disc 11 is driven to rotate clockwise through the engagement of the output gear 322 and the rotating tooth segment 112 of the output gear 322, the three clamping jaw shafts 113 drive the three clamping jaws 12 to revolve clockwise around the material inserting hole 111, the gear segments 122 of the three clamping jaws 12 are engaged with the corresponding material feeding tooth segments 211 on the material feeding barrel 21, the material feeding barrel 21 makes the material feeding barrel 21 and the guide barrel 22 relatively static under the resistance of the stopping piece, namely the material feeding barrel 21 is fixed, and the three clamping jaws 12 rotate clockwise around the rotating shaft, namely the clamping jaw shafts 113, so that the minimum distance between the eccentric surfaces 121 of the three clamping jaws 12 and the axis of the material inserting hole 111 is gradually reduced until the three clamping jaws 12 clamp the piece 4 to be conveyed through the single claw 1211; finally, after the piece 4 to be conveyed is clamped, as the outer wall of the piece 4 to be conveyed is made of hard materials, the three claws 12 cannot rotate, so that in the clockwise revolution process of the three claws 12 around the inserting hole 111, the gear sections 122 at the second ends of the three claws 12 are meshed with the feeding tooth sections 211 corresponding to the gear sections 122 on the feeding barrel 21, the feeding barrel 21 rotates clockwise while counteracting the resistance of the stop piece, the three sliding bulges 212 on the feeding barrel 21 rotate simultaneously, the three thread grooves 221 generate driving forces for the three sliding bulges 212 simultaneously, and the feeding barrel 21 moves downwards in a spiral feeding manner, namely rotates clockwise under the action of the driving forces in three directions of the three sliding bulges 212; after moving to a certain position, the external object, such as milling cutter teeth, applies a resistance to the to-be-conveyed piece 4, so that the to-be-conveyed piece 4 and the feeding barrel 21 cannot move downwards due to an upward resistance, so that the intermittent driven wheel 326 and the gear shaft 327 slide, that is, the intermittent driven wheel 326 and the gear shaft 327 rotate relatively, that is, the intermittent driven wheel 326 stops rotating, so that the output gear 3215 and the output gear 322 stop rotating, further, the rotating disc 11 and the claw 12 in the clamping assembly 1 stop rotating, so that the to-be-conveyed piece 4 stops moving downwards, at this time, the external object processes the to-be-conveyed piece 4 until the resistance applied to the to-be-conveyed piece 4 disappears after the external object is processed until the cutting effect is achieved until the resistance is achieved, such as the cutting knife of the cutting assembly 200 cuts the end of the pencil to a certain conicity, so that the intermittent driven wheel 326 rotates synchronously with the intermittent driven wheel 325, that the intermittent driven wheel 326 rotates intermittently, that is the output gear 3215 and the output gear 322 rotates, and the rotating disc 11 is further, the cycle is such that the to move downwards and the to-be-conveyed piece 4 is processed alternately until the cutting is completed or until the position of the end is reversed, and the switch state is controlled to rotate at the end position is turned down, and the control panel is turned state is according to the state of the switch 7.

Backhaul process: the control board 7 controls the motor 31 to rotate reversely according to the state of the switch node, so that the multistage transmission gear 321 drives the output gear 322 to rotate clockwise through the main shaft 323, the rotating disc 11 is driven to rotate anticlockwise through the engagement of the output gear 322 and the rotating tooth segment 112 of the output gear 322, the three clamping jaw shafts 113 drive the three clamping jaws 12 to revolve anticlockwise around the material inserting hole 111, the gear segments 122 of the three clamping jaws 12 are meshed with the corresponding material feeding tooth segments 211 on the material feeding barrel 21, the material feeding barrel 21 moves upwards to the upper end position in a spiral return way while rotating anticlockwise under the pushing force of the stop piece, namely the spring, and the pushing force of the three clamping jaws 12, the guide barrel 22 prevents the continuous movement of the material feeding barrel 21, so that the material feeding barrel 21 is relatively static, namely the material feeding barrel 21 is not moved, and the three clamping jaws 12 rotate anticlockwise around the rotating shaft 113, so that the minimum distance between the eccentric surfaces 121 of the three clamping jaws 12 and the axis of the material inserting hole 111 is gradually increased until the three clamping jaws 12 loosen the piece 4 to be conveyed; after the conveying member 4 is released, the switch node state of the limit switch at the lower end position is adjusted, and the control board 7 controls the motor 31 to rotate forward or stop rotating according to the switch node state.

In summary, in the feeding device 100 provided in this embodiment, the clamping claws 12 on the clamping assembly 1 gradually clamp or unclamp and fix the to-be-conveyed piece 4; the clamping assembly 1 is driven to rotate through the driving mechanism 3, and then after the workpiece 4 to be conveyed is gradually clamped through the clamping jaws 12, the clamping assembly 1 drives the conveying assembly 2 to rotate, and then screw feeding of the conveying assembly 2 is achieved, so that automatic feeding and return stroke of the workpiece 4 to be conveyed are achieved, namely automatic feeding of a pencil and return stroke after cutting are achieved, the operation is simple and convenient, compared with a pencil sharpener in the prior art, automatic clamping of the pencil is achieved through the clamping assembly 1, operation of an operator is not needed, phenomenon that a small child such as a child in a kindergarten does not have a phenomenon that the pencil is not moved due to insufficient clamping of the manual pencil can be avoided, and conveying efficiency of the feeding device 100 is greatly improved.

In particular, in the feeding device 100 provided in this embodiment, the installation state of the to-be-conveyed member 4 is detected by the installation detector 5 and the control board 7, so as to save the judgment of an operator, and meanwhile, since the clamping assembly 1 is disposed inside the conveying assembly 2 and the to-be-conveyed member 4 is inserted into the clamping assembly 1, the installation state of the to-be-conveyed member 4 is not easy to judge, the installation state of the to-be-conveyed member 4 can be accurately judged by the installation detector 5, and the invalid movement of the conveying assembly 2 when the operator does not judge to cause the unclamping of the to-be-conveyed member 4 is avoided; in addition, detection of the moving position of the conveying assembly 2 is achieved through the conveying in-place detector 6 and the control board 7, so that automatic reciprocating movement of the conveying assembly 2 is achieved, automatic reciprocating movement of the to-be-conveyed piece 4 is achieved, and further 100 efficiency of the feeding device is improved.

Pencil sharpener embodiment:

The present embodiment also proposes a pencil sharpener, see fig. 16, comprising: the feeding device 100 and the cutting assembly 200 described above; wherein,

The specific implementation process of the feeding device 100 is described above, and the embodiment will not be described herein again, and the cutting assembly 200 performs the automatic cutting treatment on the pencil.

The feeding device 100 is disposed at one side (upper side as shown in fig. 16) of the cutting assembly 200 for feeding the pencil into the cutting assembly 200 to cut the pencil by the cutting assembly 200; the feeding device 100 and the cutting assembly 200 may be driven by the same motor, i.e., motor 31, and the rotation of the motor 31 may be controlled by the same control board, i.e., control board 7.

The pencil sharpener further comprises a housing (not shown) sleeved outside the feeding device 100 and the cutting assembly 200, so as to avoid contact scratch and the like of parts in the pencil sharpener to operators, and avoid interference of foreign objects to movement of the parts in the pencil sharpener.

Since the feeding device 100 has the above-described effects, the pencil sharpener having the feeding device 100 also has corresponding technical effects.

Referring to fig. 17 and 18, a detecting member 201 for detecting a pencil cutting effect is provided in the cutting assembly 200, and the rotation of the motor 31 is controlled by the control board 7 according to the cutting effect.

Specifically, the cutting assembly 200 is provided with a cone-shaped bore 202 for receiving the pencil end; the detecting piece 201 comprises a sliding rod 2011 arranged at the cone top position of the inner hole 202, a cutting limit switch 2012 arranged below the inner hole 202 and a guide spring 2013 sleeved outside the sliding rod 2011; when the pencil in the inner hole 202 is fed and cut alternately by the feeding device 100 and the cutting assembly 200, so that the end of the pencil provided with the inner hole 202 is cut to the conicity matched with the inner hole 202 and the pencil core is cut to a certain length, the sliding rod 2011 moves downwards until approaching or contacting the cutting limit switch 2012 under the thrust of the pencil through the guidance of the guide spring 2013, the switch node state of the cutting limit switch 2012 is adjusted, and the control board 7 controls the driving mechanism 3 to rotate reversely or stop according to the switch node state; after the pencil is cut, the feeding device 100 returns the pencil to the upper end point position, the control board 7 controls the alarm of the buzzer arranged on the pencil sharpener according to the switch node states of the limit switch 2012 and the limit switch 2012 at the upper end point position, for example, the limit switch 2012 and the limit switch at the upper end point position are in a normally closed state, the limit switch 2012 is adjusted to be opened under the contact of the sliding rod 2011, the feeding device 100 returns the pencil to the upper end point position, the limit switch at the upper end point position is adjusted to be opened, and when the limit switch 2012 received by the control board 7 and the limit switch at the upper end point position are both opened, the alarm of the buzzer is controlled to prompt the operator that the pencil cutting is completed; otherwise, i.e. either the cut limit switch 2012 or the limit switch at the upper end point is closed, the buzzer will not sound an alarm.

The working process of the pencil sharpener comprises the following steps: in the alternate feeding and cutting of the feeding device 100 and the cutting assembly 200, if the switch node state adjustment of the limit switch at the lower end point position causes the control board 7 to control the motor 31 to rotate reversely, so that the feeding device 100 drives the pencil to return to the switch node state adjustment of the limit switch at the upper end point position, because the switch node state of the cutting limit switch 2012 is not adjusted, the control board 7 controls the motor 31 to rotate forwardly, the feeding device 100 and the cutting assembly 200 alternately feed and cut, and the switch node state adjustment of the cutting limit switch 2012 is sequentially circulated until the switch node state adjustment of the cutting limit switch 2012, and the control board 7 controls the motor 32 to rotate reversely, so that when the control board 7 receives the switch node state adjustment of the limit switch at the upper end point position and the switch node state adjustment of the cutting limit switch 2012, the control board 7 controls the buzzer to stop rotating, so that an operator can take out the loosened pencil for use.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1.A feeding device, characterized by comprising: the clamping assembly, the conveying assembly and the driving mechanism are used for clamping the to-be-conveyed piece; wherein,

The clamping assembly is provided with clamping jaws for gradually clamping the to-be-conveyed piece;

The conveying assembly is sleeved outside the clamping assembly and is rotatably connected with the clamping assembly;

the driving mechanism is connected with the clamping assembly and is used for driving the clamping assembly to rotate so as to drive the clamping jaws to clamp the to-be-conveyed piece step by step, and driving the clamping assembly to rotate after the clamping jaws clamp the to-be-conveyed piece so as to drive the conveying assembly to screw;

the clamping assembly further comprises: a rotating disc connected to the drive mechanism; wherein,

The rotating disc is provided with a material inserting hole for inserting the piece to be conveyed;

Each claw is rotatably connected to the rotating disc, and the distance between the rotating shaft of each claw and the axis of the material inserting hole is the same, so that when the claw rotates along with the axis of the material inserting hole, the claw rotates to gradually clamp the to-be-conveyed piece;

Each claw is rotatably connected with the conveying assembly and is used for driving the conveying assembly to rotate around the axis of the material inserting hole and simultaneously feeding along the axis of the material inserting hole along with the rotation of the rotating disc around the axis of the material inserting hole after the claw clamps the piece to be conveyed; the first side surface of the clamping jaw is provided with an eccentric surface facing the material inserting hole and used for gradually clamping the to-be-conveyed piece; the distance between the eccentric surface and the rotating shaft of the claw is gradually increased from one end to the other end, so that the minimum distance between the eccentric surface and the material inserting hole is adjusted through rotation of the claw, and further the claw is gradually clamped or gradually loosened to a piece to be conveyed along with rotation of the eccentric surface;

The delivery assembly includes: a feeding cylinder and a guide cylinder; the guide cylinder is sleeved outside the feeding cylinder, at least one thread groove is formed in the inner wall of the guide cylinder, sliding protrusions which are arranged in one-to-one correspondence with the thread grooves are arranged on the outer wall of the feeding cylinder and can be slidably clamped in the corresponding thread grooves, and the feeding cylinder is in spiral feeding under the guiding action of the matching of the sliding protrusions and the thread grooves; or, the guide cylinder is sleeved outside the feeding cylinder, at least one sliding protrusion is arranged on the inner wall of the guide cylinder, the outer wall of the feeding cylinder is provided with thread grooves which are arranged in one-to-one correspondence with the sliding protrusions, the sliding protrusions are slidably clamped in the corresponding thread grooves, and the feeding cylinder is in spiral feeding under the guiding action of the sliding protrusions and the thread grooves.

2. The feeding device as claimed in claim 1, wherein,

The second side surface of the claw is provided with a gear section meshed with the conveying assembly, and the gear section is used for driving the conveying assembly to rotate around the axis of the material inserting hole and simultaneously feeding along the axis of the material inserting hole after the eccentric surface clamps the piece to be conveyed;

An involute section is arranged between the eccentric surface and the gear section.

3. The feeding device as claimed in claim 1, wherein,

The rotating disc is provided with clamping claw shafts which are arranged in one-to-one correspondence with the clamping claws, each clamping claw is provided with a connecting hole, and each clamping claw is sleeved on the corresponding clamping claw shaft through the connecting hole; or alternatively, the first and second heat exchangers may be,

The rotating disc is provided with claw holes which are arranged in one-to-one correspondence with the claws, and each claw is provided with a claw shaft which is sleeved in the corresponding claw hole.

4. The feeding device as claimed in claim 1, wherein,

And feeding tooth sections corresponding to the clamping claws one by one are arranged at the top of the inner wall of the feeding barrel and meshed with the gear sections of the clamping claws.

5. A feeding device as claimed in any one of claims 1 to 3, wherein,

A stop member is arranged on the conveying assembly and is used for stopping the feeding of the conveying assembly before the clamping assembly clamps the to-be-conveyed piece; or alternatively, the first and second heat exchangers may be,

And a stop structure is arranged on the guide cylinder of the conveying assembly and is used for preventing the conveying assembly from being fed before the clamping assembly clamps the to-be-conveyed piece.

6. A feeding device according to any one of claims 1 to 3, wherein said drive mechanism comprises: a motor and a transmission member; wherein,

The motor drives the clamping assembly to rotate through the transmission piece;

the transmission part is a multi-stage transmission gear, and an output gear of the transmission part is connected with the clamping assembly and is used for driving the clamping assembly to rotate;

The multi-stage transmission gear is internally provided with an intermittent driving wheel and an intermittent driven wheel which are coaxially arranged and are rotatably connected;

The intermittent driven wheel is sleeved on a gear shaft of the intermittent driving wheel and rotates along with the intermittent driving wheel, and a resistance piece is arranged between the intermittent driven wheel and the gear shaft and used for enabling the intermittent driven wheel to slip due to resistance when the piece to be conveyed is fed in place.

7. A feeding device according to any one of claims 1 to 3, further comprising: installing a detector, conveying the detector to the position and controlling the panel; wherein,

The installation detector is arranged in the conveying assembly and is used for detecting whether the to-be-conveyed piece is inserted into the clamping assembly or not;

the conveying in-place detector is arranged on the conveying assembly and is used for detecting whether the conveying assembly reaches two end positions of the movement stroke of the conveying assembly or not and sending the position state to the control panel;

The control board is electrically connected with the installation detector and the conveying in-place detector, and is used for receiving the detection result detected by the installation detector and the position state emitted by the conveying in-place detector, and controlling the driving mechanism according to the detection result and the position signal so as to control the rotation of the clamping assembly.

8. A pencil sharpener, comprising: a cutting assembly and a feed device as claimed in any one of claims 1 to 7; wherein,

The feeding device is arranged on one side of the cutting assembly and used for conveying the pencil into the cutting assembly so as to cut the end portion of the pencil through the cutting assembly.