Pencil sharpener feeding mechanism
By designing a pen feeding mechanism including base, rotary chuck, gear slider and other components on the pen sharpener, the problem that the existing pen sharpener cannot automatically stop cutting is solved, and the automatic pen feeding and cutting stop of pencils is realized, avoiding the waste of pencils.
Patent Information
- Application Number
- CN202421546606.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The existing pencil sharpener cannot automatically stop after the pencil is cut, resulting in continuous cutting of the pencil, causing waste and affecting quality.
A pen cutting device is designed, including a base, a rotating chuck, a gear slider, a gear shaft, a pen feeding guide wheel and a drive spring. Through the cooperation of the gear and the drive rod, the automatic pen feeding and cutting stop of the pencil is realized.
The pen is automatically stopped after cutting the pen, avoiding unnecessary cutting of the pencil, and improving the efficiency of the pencil and the utilization rate of the pencil.
Smart Images
Figure CN222742449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a component on a pencil sharpener, in particular to a pencil feeding mechanism of the pencil sharpener. Background Art
[0002] A pencil sharpener is a pencil cutting tool commonly used by students. In the existing pencil sharpener, after the pencil is cut, the pencil sharpener cannot automatically stop cutting the pencil. If the pencil continues to be cut, the pencil will be wasted, which also affects the quality of the pencil sharpener. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a pen feeding mechanism for a pencil sharpener in view of the deficiencies in the prior art.
[0004] In order to achieve the above purpose, the measures taken by the utility model are:
[0005] A pen feeding mechanism of a pencil sharpener comprises a base and a rotating chuck, the base and the rotating chuck are arranged opposite to each other, a pen passing hole is provided in the middle of the rotating chuck, a gear slider is slidably connected to the side of the base close to the rotating chuck along the diameter direction thereof, a gear shaft is rotatably connected to the gear slider, a pen feeding guide wheel is sleeved on the gear shaft, a transmission toothed disc is rotatably provided between the base and the gear slider, a shifting tooth for transmitting to the gear on the gear shaft is provided on the side of the transmission toothed disc close to the gear slider, a transmission shaft is provided on the side of the transmission toothed disc away from the shifting tooth, the transmission shaft passes through the center hole of the base, an arc driving groove is provided on the rotating chuck, a driving rod for extending into the arc driving groove is provided on the gear slider, a driving spring is provided between the base and the rotating chuck, one end of the driving spring presses on the base, and the other end presses on the rotating chuck;
[0006] The base is provided with a base slide groove along the diameter direction, and the slide plate on the gear slider is slidably connected to the base slide groove;
[0007] The base is provided with a base spring seat, the rotating chuck is provided with a chuck spring seat, a spring installation space is formed between the base spring seat and the chuck spring seat, the driving spring is arranged in the spring installation space, the driving spring is pressed against the chuck spring seat at one end, and the other end is pressed against the base spring seat;
[0008] The gear slider, gear shaft and pen feeding guide wheel are provided in three groups correspondingly, and the three groups form an equilateral triangle, the driving springs are provided in three groups, and the shifting teeth are provided in three groups correspondingly;
[0009] The driving mechanism on the pencil sharpener is transmission-connected to the transmission shaft.
[0010] The utility model has the following beneficial effects: it is practical and novel in structure, and can automatically feed the pencil when cutting the pencil. After the pencil is cut, the feeding of the pencil can be automatically stopped, thus preventing the pencil from being cut continuously. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the exploded structure of one side of the utility model.
[0012] Figure 2 This is a schematic diagram of the exploded structure of the other side of the utility model.
[0013] Figure 3 It is a schematic diagram of the external structure of one side of the utility model.
[0014] Figure 4 It is a schematic diagram of the external structure of the other side of the utility model. DETAILED DESCRIPTION
[0015] A pencil sharpener feeding mechanism comprises a base 1 and a rotating chuck 2, the base 1 and the rotating chuck 2 are arranged opposite to each other, a pen passing hole 203 is provided in the middle of the rotating chuck 2, a gear slider 3 is slidably connected to the side of the base 1 close to the rotating chuck 2 along the diameter direction thereof, a gear shaft 4 is rotatably connected to the gear slider 3, a pen feeding guide wheel 5 is sleeved on the gear shaft 4, a transmission toothed disc 6 is rotatably provided between the base 1 and the gear slider 3, a shifting tooth 601 for transmitting to a gear 401 on the gear shaft 4 is provided on the side of the transmission toothed disc 6 close to the gear slider 3, a transmission shaft 602 is provided on the side of the transmission toothed disc 6 away from the shifting tooth 601, and the transmission shaft 602 passes through the center hole 101 of the base 1, an arc driving groove 201 is provided on the rotating chuck 2, a driving rod 301 for extending into the arc driving groove 201 is provided on the gear slider 3, a driving spring 7 is provided between the base 1 and the rotating chuck 2, one end of the driving spring 7 presses on the base 1, and the other end presses on the rotating chuck 2.
[0016] The utility model is installed on a pencil sharpener.
[0017] like Figure 1-4 As shown, in the natural state of the unsharpened pencil, the elastic force of the driving spring 7 drives the rotating chuck 2 to rotate. When rotating, the driving rod 301 slides in the arc driving groove 201 of the rotating chuck 2, and the driving rod 301 can drive the gear slider 3 to move toward the center along the diameter direction of the base 1. At this time, the equilateral triangle surrounded by the three pen feeding guide wheels 5 is in a minimum state. When cutting the pencil, the pencil is inserted through the pen hole 203 and inserted into the equilateral triangle surrounded by the pen feeding guide wheels 5. Under the elastic force of the driving spring 7, the pen feeding guide wheels 5 are clamped on the pencil.
[0018] When the pencil sharpener is rotating to cut the pencil, the driving mechanism 100 drives the entire transmission gear plate 6 to rotate through the transmission shaft 602. When the transmission gear plate 6 rotates, the shifting teeth 601 on the transmission gear plate 6 drive the gear 401 to rotate, and the gear 401 drives the pen feeding guide wheel 5 to rotate through the gear shaft 4. When the pen feeding guide wheel 5 rotates, the pencil is driven to continuously move toward the cutting mechanism in the pencil sharpener, and the cutting mechanism realizes the cutting of the pencil. At the same time, due to the continuous cutting of the pencil, the pencil gradually opens the equilateral triangle surrounded by the three pen feeding guide wheels 5, that is, the pen feeding guide wheel 5 overcomes the driving spring. 7, it continuously moves outwards and drives the gear slider 3 to move outwards along the diameter direction of the base 1. When the pencil is completely cut, the equilateral triangle formed by the three pen feeding guide wheels 5 is stretched to the maximum. At this time, since the pen feeding guide wheel 5 drives the driving gear 401 on the gear shaft 4 to continuously move outwards, the driving gear 401 is disengaged from the shifting tooth 601, and the shifting tooth 601 can no longer shift the driving gear 401 to rotate, and the pen feeding guide wheel 5 no longer rotates. In this state, the pencil is stopped from being fed and will not be cut, so that the pencil cutting is automatically stopped, thereby avoiding the waste of the pencil.
[0019] The base 1 is provided with a base sliding groove 102 along the diameter direction, and the sliding piece 302 on the gear slider 3 is slidably connected to the base sliding groove 102 .
[0020] The base 1 is provided with a base spring seat 103, and the rotating chuck 2 is provided with a chuck spring seat 202. A spring installation space is formed between the base spring seat 103 and the chuck spring seat 202. The drive spring 7 is arranged in the spring installation space. The drive spring 7 is pressed against the chuck spring seat 202 at one end and the other end is pressed against the base spring seat 103.
[0021] The gear slider 3, the gear shaft 4 and the pen feeding guide wheel 5 are provided in three groups correspondingly, and the three groups form an equilateral triangle. There are three driving springs 7 and three shifting teeth 601 respectively.
[0022] The driving mechanism 100 on the pencil sharpener is connected to the transmission shaft 602. A transmission hole is provided at the end of the transmission shaft 602. The driving shaft of the driving mechanism 100 is inserted into the transmission hole to realize transmission.
Claims
1. A pencil sharpener feeding mechanism, comprising a base (1) and a rotating chuck (2), the base (1) and the rotating chuck (2) being arranged opposite to each other, a pen-passing hole (203) being provided in the middle of the rotating chuck (2), characterized in that: The base (1) is slidably connected to a gear slider (3) on one side close to the rotating chuck (2) along the diameter direction thereof, the gear slider (3) is rotatably connected to a gear shaft (4), the gear shaft (4) is sleeved with a pen feeding guide wheel (5), a transmission toothed disc (6) is rotatably provided between the base (1) and the gear slider (3), a shifting tooth (601) for transmitting to a gear (401) on the gear shaft (4) is provided on the side close to the gear slider (3), and the transmission toothed disc (6) is away from the gear slider (3). A transmission shaft (602) is provided on one side of the shifting tooth (601), and the transmission shaft (602) passes through the central hole (101) of the base (1). A circular arc driving groove (201) is provided on the rotating chuck (2), and a driving rod (301) is provided on the gear slider (3) for extending into the circular arc driving groove (201). A driving spring (7) is provided between the base (1) and the rotating chuck (2), and one end of the driving spring (7) presses on the base (1), and the other end presses on the rotating chuck (2).
2. A pencil sharpener feeding mechanism according to claim 1, characterized in that: The base (1) is provided with a base slide groove (102) along the diameter direction, and the slide plate (302) on the gear slider (3) is slidably connected to the base slide groove (102).
3. A pencil sharpener feeding mechanism according to claim 1 or 2, characterized in that: The base (1) is provided with a base spring seat (103), and the rotating chuck (2) is provided with a chuck spring seat (202). A spring installation space is formed between the base spring seat (103) and the chuck spring seat (202). The driving spring (7) is arranged in the spring installation space. One end of the driving spring (7) is pressed against the chuck spring seat (202) and the other end is pressed against the base spring seat (103).
4. A pencil sharpener feeding mechanism according to claim 3, characterized in that: The gear slider (3), the gear shaft (4) and the pen feeding guide wheel (5) are provided in three groups correspondingly, and the three groups form an equilateral triangle. The driving springs (7) are provided in three groups, and the shifting teeth (601) are provided in three groups correspondingly.
5. The pencil sharpener feeding mechanism according to claim 4, characterized in that: The driving mechanism (100) on the pencil sharpener is transmission-connected to the transmission shaft (602).