CN220576937U

CN220576937U - Automatic pencil sharpener with lifting inner slide

Info

Publication number: CN220576937U
Application number: CN202322302654.7U
Authority: CN
Inventors: 王可佳
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-27
Filing date: 2023-08-27
Publication date: 2024-03-12
Anticipated expiration: 2033-08-27

Abstract

The utility model provides an inner slide lifting automatic pencil sharpener, which uses a screw transmission mechanism to drive a pencil holder to rotate along the positive and negative directions of the pencil axis, and meanwhile, a pencil feeding mechanism makes lifting travel motion relative to the pencil holder, thereby creating a simple automatic pencil feeding cutting mode, and meanwhile, the lifting slide is arranged in the pencil feeding mechanism, so that the pencil sharpening process is more scientific and technological; the technology simplifies the internal structure of the pencil sharpener, the pencil feeding mechanism can be of a specific shape, the lifting travel movement process of the pencil feeding mechanism can be viewed through the transparent hood, and meanwhile, the product quality is easy to control and the cost is low due to the simple structure and the simplified production process of the product.

Description

Automatic pencil sharpener with lifting inner slide

Technical Field

The utility model relates to a pencil sharpener, in particular to an inner slide lifting automatic pencil sharpener.

Background

The existing electric pencil sharpener, especially automatic pencil sharpener, is generally synchronous roller driven pencil feeding; the synchronous roller driving pen feeding technology relies on the pen cavity to control the pen feeding speed, and the roller driving mechanism is used for controlling the pen feeding by a clutch structure. The pencil feeding mechanism is sensitive in response and can be completed by triggering the clutch by virtue of the blocking force of the pencil, so that the production process is high in requirement. Meanwhile, in order to realize automation, the existing automatic pencil sharpener has the defects of complex process, more workpieces, higher cost and technical bottleneck, and further development is limited.

Disclosure of Invention

Aiming at the technical problem of an automatic pencil sharpener, the utility model provides the inner slide lifting automatic pencil sharpener, which simplifies the design structure of the automatic pencil sharpener by adopting the spiral transmission pencil feeding technology, eliminates the passive clutch structure to control pencil feeding, has simple process, fewer workpieces, easy production control and relatively low cost.

The technical scheme adopted for solving the technical problems is as follows: an inner slide lifting automatic pencil sharpener comprises a hood, a pencil clamping device, a pencil feeding mechanism, a knife rest frame, a knife rest and a driving system; a screw drive mechanism is arranged between the cutter frame and the pen feeding mechanism of the pencil sharpener, a linear sliding mechanism is arranged between the pen feeding mechanism and the cutter frame, and the driving system drives the cutter frame to rotate and simultaneously drives the pen feeding mechanism to do linear motion on the cutter frame.

The screw transmission mechanism is formed by matching an external thread arranged at the upper end of the cutter frame with an internal thread arranged on the pen feeding mechanism, a hob part on the cutter frame is arranged in the cutter frame, and an external thread part on the cutter frame is arranged outside the top of the cutter frame.

The linear sliding mechanism is formed by loose matching of a sliding groove arranged on the pen feeding mechanism and a sliding column arranged on the tool rest frame, the sliding groove on the pen feeding mechanism is arranged inside the pen feeding mechanism, the sliding column on the tool rest frame is arranged outside the tool rest frame, and the pen feeding mechanism can do lifting stroke linear motion along the sliding column through the sliding groove.

The pen feeding device is characterized in that a slope-type slideway is arranged on the hood, a pen clamping device is arranged at the upper end of the pen feeding mechanism, an unlocking shifting arm is arranged on the pen clamping device, and the slope-type slideway can limit the stroke of the unlocking shifting arm on the pen clamping device. The pen clamping tooth claw is controlled to clamp or loosen the pen through the transmission of the driving plate and the pen clamping spring which are connected with the driving plate and the pen clamping spring, so that the pen clamping tooth claw is gradually loosened by sliding along the slope type slideway when the driving plate is lifted, and is gradually clamped by sliding along the slope type slideway when the driving plate is lowered.

The pen clamping device is characterized in that a start/stop trigger switch is arranged at the upper end of the pen clamping device, the start/stop trigger switch is a normally open switch, the pen feeding mechanism moves upwards to the top, the start/stop trigger switch is closed when touching the top of the machine cover, the pen feeding mechanism moves downwards, and the start/stop trigger switch is separated from the top of the machine cover to start.

The upper end of the pen clamping device is provided with an auxiliary pen clamp. The auxiliary pen clamp is a light pen clamping mechanism and has the function of supporting the pencil when the pen clamping tooth claw of the pen clamping device is loosened.

The driving system is internally provided with a pre-starting switch which is controlled by the position state of the tool rest. The transmission shaft with the upper end connected with the tool rest passes through the gear axis and is connected with the pre-starting switch, the transmission shaft in the initial state is pushed to the upper part of the pre-starting switch by the homing spring, when a pencil is fed into the tool rest, the tool rest conducts pressure to enable the bottom end of the transmission shaft to touch the pre-starting switch through the trigger plate, at the moment, the motor is started, the pencil feeding mechanism moves downwards at the moment of starting, and the starting/stopping trigger switch is separated from the top of the machine cover to start the pencil sharpener.

The driving system is internally provided with a reverse trigger switch, a reverse starting shaft penetrates through the transmission shaft, the contact point between the upper end of the reverse starting shaft and the bottom of the inner cavity of the tool rest is a reverse trigger point, and the lower end of the reverse starting shaft is propped against the reverse trigger switch. When the pencil is cut to a preset pencil point length, the pencil point presses the reversing starting shaft to trigger the reversing trigger switch, the motor reverses, and the pencil feeding mechanism moves upwards.

And a buffer spring is arranged between the cutter frame and is used for balancing cutting stress and pencil sharpening time delay.

The top end of the hood is provided with a correction fence, the hood is made of transparent materials, and the pen feeding mechanism is rocket-shaped. The correction rail is used for preventing the unlocking poking arm from being stressed to lead the pencil feeding mechanism to walk in the direction of deviation when sliding along the slope type slideway, and the pencil feeding mechanism can be seen to lift and cut during the running of the pencil sharpener.

After adopting the structure, compared with the prior art, the utility model has the following advantages:

the utility model uses the spiral transmission structure to transmit the pencil feeding mechanism, simplifies the internal structure of the pencil sharpener, realizes the pencil feeding process of the pencil sharpener controlled by the lifting stroke of the pencil feeding mechanism, can be of a specific shape, can view the lifting stroke movement process of the pencil feeding mechanism through the transparent hood, and simultaneously, has the advantages of simple product structure, simplified production process, easy control of product quality and low cost.

Drawings

Fig. 1 is a schematic perspective view illustrating an initial (reset) state according to an embodiment of the present utility model.

Fig. 2 is a schematic perspective view showing a descending trigger return state of the pen feeding mechanism according to an embodiment of the present utility model.

Fig. 3 is a schematic view of a planing case according to an embodiment of the present utility model.

Fig. 4 is a schematic view of a stereoscopic depression angle of the pen feeding mechanism and the tool rest frame according to the embodiment of the utility model.

Fig. 5 is a schematic view of a pen feeding mechanism and a holder frame of the pen feeding mechanism according to an embodiment of the present utility model.

Fig. 6 is a schematic diagram of a matching structure of a tool rest and a tool rest frame according to an embodiment of the present utility model.

Fig. 7 is a schematic diagram of a triggering mechanism according to an embodiment of the present utility model.

The figure shows: 1. a hood; 2. a pen clamping device; 3. a pen feeding mechanism; 4. a tool rest frame; 5. a tool holder; 6. a drive system; 7. a motor; 11. slope type slideway; 12. correcting the deviation column; 21. unlocking the shifting arm; 22. a start/stop trigger switch; 23. an auxiliary pen clip; 24. a pen clamping spring; 25. a dial; 26. clamping pen tooth claws; 31. an internal thread; 32. a chute; 41. a spool; 51. an external thread; 52. a buffer spring; 53. a hob; 61. a return spring; 62. a pre-start switch; 63. a reverse trigger switch; 64. a transmission shaft; 65. reversing the starting shaft; 66. and a trigger plate.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

As shown in fig. 1 and 3, an inner slide lifting automatic pencil sharpener comprises a hood 1, a pencil clamping device 2, a pencil feeding mechanism 3, a knife rest frame 4, a knife rest 5 and a driving system 6; a screw transmission mechanism is arranged between a cutter rest 5 and a pen feeding mechanism 3 of the pencil sharpener, a linear sliding mechanism is arranged between the pen feeding mechanism 3 and a cutter rest frame 4, and a driving system 6 drives the cutter rest 5 to rotate and simultaneously drives the pen feeding mechanism 3 to do linear motion on the cutter rest frame 4.

As shown in fig. 3 to 5, the screw transmission mechanism is formed by matching an external thread 51 arranged at the upper end of the tool rest 5 with an internal thread 31 arranged on the pen feeding mechanism 3, a hob 53 part on the tool rest 5 is arranged in the tool rest frame 4, and an external thread 51 part on the tool rest 5 is arranged outside the top of the tool rest frame 4.

As shown in fig. 3 to 5, the linear sliding mechanism is formed by loose matching of a sliding groove 32 arranged on the pen feeding mechanism 3 and a sliding column 41 arranged on the cutter frame 4, the sliding groove 32 on the pen feeding mechanism 3 is arranged inside the pen feeding mechanism 3, the sliding column 41 on the cutter frame 4 is arranged outside the cutter frame 4, and the pen feeding mechanism 3 can do lifting stroke linear motion along the sliding column 41 through the sliding groove 32.

As shown in fig. 1 to 5, the hood 1 is provided with a ramp 11, the upper end of the pen feeding mechanism 3 is provided with a pen clamping device 2, the pen clamping device 2 is provided with an unlocking poking arm 21, and the ramp 11 can limit the stroke of the unlocking poking arm 21 on the pen clamping device 2. The pen clamping tooth claw 26 is controlled to clamp or unclamp a pen by the dial 25 and the pen clamping spring 24 which are connected with the dial 21 through conduction, so that the dial 21 slides along the slope-type slide 11 to gradually unclamp the pen clamping tooth claw 26 when ascending, and slides along the slope-type slide 11 to gradually clamp the pen clamping tooth claw 26 when descending.

As shown in fig. 1 to 3, the upper end of the pen clamping device 2 is provided with a start/stop trigger switch 22, the start/stop trigger switch 22 is a normally open switch, the pen feeding mechanism 3 moves up to the top, the start/stop trigger switch 22 touches the top of the hood 1 to be closed, the pen feeding mechanism 3 moves down, and the start/stop trigger switch 22 is separated from the top of the hood 1 to be started.

As shown in fig. 3 to 4, an auxiliary pen clip 23 is arranged at the upper end of the pen clamping device 2. The auxiliary pen clip 23 is a light pen clipping mechanism, and has the function of supporting the pencil by the auxiliary pen clip 23 when the pen clipping teeth 26 of the pen clipping device 2 are loosened.

As shown in fig. 3 and 7, a pre-start switch 62 is arranged in the driving system 6, and the pre-start switch 62 is controlled by the position state of the tool rest 5. The transmission shaft 64 with the upper end connected with the tool rest 5 passes through the gear axis and is connected with the pre-starting switch 62, the transmission shaft 64 in the initial state is pushed to the upper side of the pre-starting switch 62 by the homing spring 61, when a pencil is fed into the tool rest 5, the tool rest 5 conducts pressure to enable the bottom end of the transmission shaft 64 to touch the pre-starting switch 62 through the trigger plate 66, at the moment, the motor 7 is started, the pencil feeding mechanism 3 moves downwards at the moment when the motor 7 is started, and the starting/stopping trigger switch 22 is separated from the top pencil sharpener of the hood 1 to start.

As shown in fig. 3 and 7, a reverse trigger switch 63 is disposed in the driving system 6, a reverse trigger shaft 65 passes through a transmission shaft 64, a contact point between the upper end of the reverse trigger shaft 65 and the bottom of the inner cavity of the tool rest 5 is a reverse trigger point, and the lower end of the reverse trigger shaft abuts against the reverse trigger switch 63. When the pencil is sharpened to a predetermined pencil point length, the pencil point presses the reverse rotation starting shaft 65 to trigger the reverse rotation triggering switch 63, the motor 7 is reversed, and the pencil feeding mechanism 3 is moved upward.

As shown in fig. 6, a buffer spring 52 is provided between the carriage frame 4 and the carriage 5, which is used for balancing the cutting force and the pencil sharpening time delay.

As shown in fig. 1-2, a deviation rectifying column 12 is arranged at the top end of the hood 1, the hood 1 is made of transparent materials, and the pen feeding mechanism 3 is in a rocket shape. The deviation correcting rail 12 is used for preventing the unlocking poking arm 21 from being stressed to lead the pencil feeding mechanism 3 to deviate in the direction when sliding along the slope type slideway 11, and the pencil feeding mechanism 3 can be seen to lift and cut during the running of the pencil sharpener.

Examples: in the initial (reset) state, a pencil is inserted into a pencil sharpener, the pencil is slightly clamped by an auxiliary pencil clamp 23 after entering, the pencil continuously touches down to a cutter holder 5, the cutter holder 5 conducts pressure to enable the bottom end of a transmission shaft 64 to touch a pre-starting switch 62 through a trigger plate 66, at the moment of starting the motor 7, the pencil feeding mechanism 3 moves down at the moment of starting the motor 7, a starting/stopping trigger switch 22 is separated from the top pencil sharpener of a machine cover 1 to start, a driving system 6 drives the cutter holder 5 to rotate, meanwhile, an external thread 51 at the upper end of the cutter holder 5 rotates clockwise in an internal thread 31 on the pencil feeding mechanism 3 to drive the pencil feeding mechanism 3 to move downwards on a cutter holder frame 4, and an unlocking poking arm 21 slides along a slope type slideway 11 to gradually enable a pencil clamping claw 26 to clamp the pencil and start cutting the pencil; when the pencil is cut to a preset pencil point length, the pencil point presses the reversing starting shaft 65 to trigger the reversing trigger switch 63, the motor 7 reverses, the external thread 51 at the upper end of the tool rest 5 rotates anticlockwise in the internal thread 31 on the pencil feeding mechanism 3 to drive the pencil feeding mechanism 3 to move upwards on the tool rest frame 4, the unlocking poking arm 21 on the pencil clamping device 2 reaches the slope type slide way 11 and slides along the slope type slide way 11 gradually to enable the pencil clamping tooth claw 26 to be loosened, and when the pencil feeding mechanism 3 moves upwards to the top, the starting/stopping trigger switch 22 on the pencil clamping device 2 contacts the top of the hood 1, the pencil cutting machine is closed. The auxiliary pencil holder 23 is used for holding the pencil lightly all the time during the operation of the pencil sharpener, and the pencil holder is held in a stable position when the pencil holding claw 26 of the pencil holding device 2 is released.

Claims

1. The automatic pencil sharpener includes hood, pencil clamping unit, pencil feeding mechanism, frame, and driving system, and features that there is one spiral transmission mechanism between the pencil feeding mechanism and the frame, and one linear sliding mechanism between the pencil feeding mechanism and the frame.

2. The automatic pencil sharpener of claim 1, wherein the screw drive mechanism is formed by matching an external thread on the upper end of the cutter holder with an internal thread on the pencil feeding mechanism, the hob on the cutter holder is arranged in the cutter holder frame, and the external thread on the cutter holder is arranged outside the top of the cutter holder frame.

3. The automatic pencil sharpener of claim 1 wherein the linear sliding mechanism is formed by a loose fit of a sliding groove formed in the pencil feeding mechanism and a sliding post formed in the pencil feeding mechanism, the sliding groove formed in the pencil feeding mechanism is formed in the pencil feeding mechanism, the sliding post formed in the pencil feeding mechanism is formed in the outside of the pencil feeding frame, and the pencil feeding mechanism can do lifting stroke linear motion along the sliding post through the sliding groove.

4. The automatic pencil sharpener of claim 1, wherein the housing is provided with a ramp, the pencil feeding mechanism is provided with a pencil clamping device at its upper end, the pencil clamping device is provided with an unlocking shifting arm, and the ramp can limit the stroke of the unlocking shifting arm on the pencil clamping device.

5. The automatic pencil sharpener of claim 1 wherein the upper end of the pencil clamping device is provided with a start/stop trigger switch, the start/stop trigger switch is a normally open switch, the pencil feeding mechanism moves up to the top, the start/stop trigger switch touches the top of the hood to be closed, and the pencil feeding mechanism moves down to start the start/stop trigger switch off the top of the hood.

6. The automatic pencil sharpener of claim 1, wherein the pencil clamping device has an auxiliary pencil clamp at its upper end.

7. The automatic pencil sharpener of claim 1, wherein the drive system is provided with a pre-start switch, and the pre-start switch is controlled by the position state of the knife rest.

8. The automatic pencil sharpener of claim 1, wherein the driving system is internally provided with a reverse trigger switch, the reverse starting shaft passes through the transmission shaft, the contact point between the upper end of the reverse starting shaft and the bottom of the inner cavity of the knife rest is a reverse trigger point, and the lower end of the reverse starting shaft is abutted against the reverse trigger switch.

9. The automatic pencil sharpener of claim 1, wherein a buffer spring is disposed between the frame and the frame.

10. The automatic pencil sharpener of claim 1, wherein the top of the hood is provided with a rectifying column, the hood is made of transparent material, and the pencil feeding mechanism is rocket-shaped.