Pen feeding clamping mechanism

Abstract

The invention discloses a pencil feeding clamping mechanism, and belongs to the technical field of electric pencil sharpeners, the pencil feeding clamping mechanism comprises a first pencil clamping assembly, a second pencil clamping assembly, a vortex disc and a mounting disc, the mounting disc is erected above the vortex disc, and the mounting disc rotates to drive the first pencil clamping assembly and the second pencil clamping assembly to get close to each other for clamping or get away from each other for expanding; the mounting disc is connected with an elastic piece, and the elastic piece exerts reverse rotation force on the mounting disc so as to drive the first pen clamping assembly and the second pen clamping assembly to be close to each other. In an initial state, the mounting disc is in contact connection with the vortex disc, the vortex disc rotates to drive the mounting disc in contact with the vortex disc to rotate forwards, so that the first pen clamping assembly and the second pen clamping assembly are driven to expand, the mounting disc is separated from the vortex disc after rotating forwards by a preset angle, and the mounting disc loses thrust of the vortex disc. And then under the action of the elastic piece, reverse rotation is performed to restore the initial state. The first pencil clamping assembly and the second pencil clamping assembly are arranged to have an initial expansion state, so that pencil feeding is labor-saving.

Description

Technical Field

[0001] The present application relates to the technical field of electric pencil sharpeners, and in particular to a pen feed clamping mechanism. Background Art

[0002] As a pencil sharpening tool, the pencil sharpener is very popular among students. The pencil sharpener includes a pen feeding mechanism and a pencil sharpening mechanism. When sharpening a pencil, the pencil is passed through the pen feeding mechanism and enters the pencil sharpening mechanism. After the pencil is in place, it is clamped by the pen feeding mechanism, and then the pencil sharpening mechanism cuts the pencil tip. After the pencil sharpening is completed, the pen feeding mechanism can also remove the pencil from the pencil sharpener.

[0003] Currently, the structures of pen feeding mechanisms that can achieve automatic advancement and retraction of pens are diverse, but the clamping force of most pen feeding mechanisms on pencils comes from elastic parts, and the elastic deformation of the elastic parts gives them a clamping force. When a user inserts a pen into the pen feeding mechanism, the pencil needs to be inserted between the first pen feeding component and the second pen feeding component. In other words, the user needs to apply force to open the first pen feeding component and the second pen feeding component so that the pencil can be smoothly inserted and receive the corresponding clamping force. However, when the diameter of the pencil is large, the resistance of the elastic part that the user needs to overcome is also large, making it more difficult for the user to advance and retract the pen, and the user experience is not good.

[0004] Related prior art, such as the Chinese patent application "Pencil sharpener feeding mechanism and pencil sharpener with the same", application number: CN202211066871.4, discloses: an upper cover; a first pen clamp assembly; a second pen clamp assembly, which moves between a loose position and a clamping position relative to the first pen clamp assembly; one or more first elastic members, which have an elastic tendency to make the first pen clamp assembly and the second pen clamp assembly in the loose position; a connecting member, and the inner wall has an inner annular guide surface, and the connecting member moves between the first position and the second position, and through the elastic force of the first elastic member, the first pen clamp assembly and the second pen clamp assembly are both against the inner annular guide surface. The above patent application provides a pencil sharpener feeding mechanism, wherein the first elastic member provided makes the first pen clamp assembly and the second pen clamp assembly in a loose state at the initial position, making pencil feeding more labor-saving, and by adding a connecting member to drive the first pen clamp assembly and the second pen clamp assembly to move to the clamping position, it is prevented that the pencil and the pencil sharpener are idle when sharpening.

[0005] The above Chinese patent application can solve the problem of too much resistance when a user inserts a pencil. However, the connecting member needs to switch its position, so as to switch the first pen clamping assembly and the second pen clamping assembly to a loose position or a clamping position. This application designs a new solution of a pen feeding clamping mechanism, which has a simpler overall structure and can be well applied in existing pencil sharpeners. Summary of the invention

[0006] The technical problem to be solved by the present application is to provide a pencil-feeding clamping mechanism, in which a first pencil-feeding clamping assembly and a second pencil-feeding clamping assembly are arranged to have an initial expansion state, so that pencil-feeding is more labor-saving.

[0007] The technical solution adopted in the present application is: a pen feeding clamping mechanism, comprising a first pen clamping assembly, a second pen clamping assembly, a vortex and a mounting plate, wherein the mounting plate is mounted above the vortex, the first pen clamping assembly and the second pen clamping assembly are respectively connected to the mounting plate, and the mounting plate rotates to drive the first pen clamping assembly and the second pen clamping assembly to clamp each other or to expand away from each other; The mounting plate is connected to an elastic member, and the elastic member applies a force to the mounting plate to rotate in the opposite direction, thereby driving the first pen clamping assembly and the second pen clamping assembly to approach each other; In the initial state, the mounting disk is in contact with the scroll, and the rotation of the scroll drives the mounting disk in contact with it to rotate forward, thereby driving the first pen clamping assembly and the second pen clamping assembly to expand. The mounting disk rotates forward by a predetermined angle and then disengages from the scroll, and the mounting disk loses the thrust of the scroll, and then rotates in the opposite direction under the action of the elastic member to return to the initial state.

[0008] Compared with the prior art, the advantages of the present application are that, first, a mounting disc structure is provided, the first pen clamping assembly and the second pen clamping assembly are connected to the mounting disc respectively, and the rotation of the mounting disc drives the first pen clamping assembly and the second pen clamping assembly to clamp each other or expand away from each other. In the present application, the mounting disc plays a role in driving the first pen clamping assembly and the second pen clamping assembly to move synchronously. Secondly, in the present application, the mounting disc is subjected to the forces applied to it by two structures, one is the force applied to the mounting disc by the elastic member to rotate in the opposite direction, which is the normal force. The other is the force applied to the mounting disc by the rotation of the vortex to push the mounting disc to rotate in the forward direction when the mounting disc is in contact with the vortex. The present application further provides that in the initial state, the mounting disc is in contact with the vortex, and after the mounting disc rotates forwardly by a predetermined angle, the mounting disc will be disengaged from the vortex, and will not be subjected to the thrust of the vortex but only to the normal force of the elastic member, and then the vortex will swirl (reversely rotate) to restore to the initial state. This is a reciprocating process, that is, the first pen clamp component and the second pen clamp component of the present application will continuously repeat the tooling state of opening, contracting, opening, and contracting when the pencil is not inserted. Then when the user inserts the pencil, even if the pencil has a large diameter, the first pen clamp component and the second pen clamp component can be easily inserted when they are in the expanded state. If the first pen clamp component and the second pen clamp component are in the contracted state when the pencil is inserted, the user only needs to wait a little, waiting for the first pen clamp component and the second pen clamp component to expand, and then they can be inserted smoothly. In the present application, the reciprocating cycle of the mounting disk is relatively short, and the user inserts the pencil smoothly without a long time of obstruction. This design improves the efficiency of the pencil's advance and retreat, and greatly improves the user experience, making the pencil sharpening process smoother and more convenient. Again, the present application adopts the design of the vortex disc to drive the rotating mechanism of the mounting disc, which can directly apply the power drive of the original pencil sharpener without the need for an additional power device. This allows the present application to be simply applied in the pencil sharpener, without making too many changes to the original pencil sharpener structure, and reducing the production and processing cost of the product.

[0009] To sum up, the pencil sharpener feeding mechanism provided in the present application not only solves the problem of difficulty in feeding and retracting pens encountered by users when using pencil sharpeners in the prior art, but also improves the overall performance and user experience of the pencil sharpener through innovative structural design, and has high practical value and market application prospects.

[0010] In the present application, the forward rotation and reverse rotation of the mounting plate are intended to express that the rotation directions of the two are opposite. Forward rotation and reverse rotation do not have a specific rotation direction.

[0011] In some embodiments of the present application, a vertically arranged slide groove is provided on the mounting plate, and a push rod is connected to the slide groove through a linear spring. The linear spring applies a downward thrust to the push rod, and the push rod contacts the surface of the scroll disk under the action of the linear spring.

[0012] In the present application, the push rod can only move up and down relative to the mounting plate, so the scroll can drive the mounting plate to rotate by pushing the push rod. The push rod is kept in a downwardly extended state under the action of the linear spring.

[0013] In some embodiments of the present application, the scroll is connected to a power device, which drives the scroll to rotate. A push block corresponding to a push rod is provided on the surface of the scroll. The rotation of the scroll drives the push block to rotate. The rotating push block contacts the push rod and pushes the mounting plate to rotate through the push rod.

[0014] The traditional scroll structure is a simple disc-shaped structure and cannot directly drive the rotation of the mounting plate. The present application adds a push block to the scroll, and through the cooperation of the push block and the push rod, the scroll rotation drives the mounting plate to rotate. In order to further shorten the period of the mounting plate's cyclic motion, the present application can set multiple push blocks at intervals on the scroll.

[0015] In some embodiments of the present application, the present application also includes a mounting seat, the mounting disk is mounted on the mounting seat, the push rod passes through the mounting seat along the inner wall surface of the mounting seat and contacts the scroll disk, the inner wall surface of the mounting seat is provided with a limiting groove, the limiting groove is provided with an expansion guide channel and a closing guide channel, and the push rod is provided with a latching protrusion, which is embedded in the limiting groove.

[0016] In the present application, a limiting groove is provided and the latching protrusion on the push rod is embedded in the limiting groove, thereby limiting the movement trajectory of the push rod and thus limiting the movement trajectory of the mounting plate.

[0017] In some embodiments of the present application, the flaring guide channel is an inclined channel, and the positive rotation of the mounting plate drives the clamping protrusion to move along the flaring guide channel. The clamping protrusion moving in the flaring guide channel is thrusted by the flaring guide channel, so that the push rod moves upward and gradually moves away from the scroll. When the clamping protrusion moves to the end of the expansion guide channel, the push rod is separated from the push block, and the mounting plate is not subjected to the thrust of the scroll. At this time, the mounting plate is only subjected to the force of the elastic member, and the mounting plate rotates in the opposite direction to drive the clamping protrusion into the closing guide channel. The clamping protrusion passes through the closing guide channel under the action of the elastic member. The closing guide channel is a horizontally arranged channel. When the clamping protrusion is located in the closing guide channel, the push rod remains in a non-contact state with the push block. When the latching protrusion passes through the closing guide channel, the push rod moves downward under the action of the linear spring until it contacts and connects with the scroll.

[0018] The forward rotation of the mounting plate is combined with the movement of the cam, and the pre-expansion function of the pen clamping mechanism is realized through a simple mechanical structure setting, which makes it smoother and less resistant for users to insert pencils, and also makes the device smoother to operate, reducing mechanical friction and wear. This design can quickly respond to user operations, ensuring that the push rod can quickly adjust its position when the pencil is inserted or removed, improving the user experience. The simple channel design reduces the need for complex mechanical structures, reduces manufacturing and maintenance costs, and makes the product more competitive in the market. Due to the relatively simple structure, it is easier for users to perform maintenance and troubleshooting in daily use, which reduces the technical threshold during use.

[0019] In some embodiments of the present application, two symmetrical guide grooves are provided on the mounting disk, and the first pen clamp assembly and the second pen clamp assembly are both provided with protrusions, and the protrusions on the first pen clamp assembly and the protrusions on the second pen clamp assembly respectively extend into the corresponding guide grooves; when the mounting disk rotates, the protrusions on the first pen clamp assembly and the protrusions on the second pen clamp assembly slide along the guide grooves.

[0020] That is, in the present application, the mounting plate and the first pen clamp assembly and the second pen clamp assembly are a linkage structure. The rotation of the mounting plate will drive the first pen clamp assembly and the second pen clamp assembly to move away from or closer to each other. At the same time, the expansion or retraction of the first pen clamp assembly and the second pen clamp assembly will also drive the rotation of the mounting plate.

[0021] The design of the guide groove can effectively guide the movement of the first pen clamping assembly and the second pen clamping assembly, ensuring that they move along a predetermined trajectory during rotation, reducing deviation and jamming. The design of the guide groove on the mounting plate enables the first pen clamping assembly and the second pen clamping assembly to move synchronously.

[0022] In some embodiments of the present application, when a pencil is inserted between the first pen clamp assembly and the second pen clamp assembly, the first pen clamp assembly and the second pen clamp assembly are kept in an open state by the force exerted by the pencil; at this time, the mounting plate is subjected to the force exerted by the first pen clamp assembly, the second pen clamp assembly, and the force exerted by the elastic member, so that the mounting plate is maintained in a balanced state.

[0023] When the pencil is not inserted into the first pen clamp assembly and the second pen clamp assembly, the card protrusion performs a circular motion in the limiting groove. When the pencil is inserted into the first pen clamp assembly and the second pen clamp assembly, the pencil will limit the reverse rotation of the mounting plate, so the card protrusion stops the circular motion after entering the closing guide channel and moving a certain distance. The distance the card protrusion moves in the closing guide channel depends on the diameter of the inserted pencil. That is, if the diameter of the pencil is larger, the distance of the mounting plate turning (reverse rotation) will be shorter, and the first pen clamp assembly and the second pen clamp assembly will be opened larger; if the diameter of the inserted pencil is smaller, the distance of the mounting plate turning (reverse rotation) will be longer, and the first pen clamp assembly and the second pen clamp assembly will be opened smaller. In other words, after the pencil is inserted into the first pen clamp assembly and the second pen clamp assembly, the mounting plate, the push rod, and the card protrusion will stay and will not return to the initial position until the pencil is withdrawn. At this time, the force of the first pen clamp assembly and the second pen clamp assembly to clamp the pencil comes from the elastic member.

[0024] In some embodiments of the present application, the push block includes a side push surface in contact with the push rod. When the push rod contacts the side push surface of the push block, it can be pushed by the rotating scroll. When the push rod moves upward and disengages from the side push surface of the push block, the mounting plate loses the thrust of the scroll. The top surface of the push block is composed of two inclined surfaces, the top surface of the push block is an inverted V-shaped structure, and the bottom surface of the push rod is an inclined surface.

[0025] When the push rod moves upward and leaves the side push surface of the push block, the design of the top surface structure of the push block and the design of the bottom surface structure of the push rod enable the mounting plate to quickly lose the thrust of the scroll. The pencil clamping assembly then adjusts the clamping according to the diameter of the pencil. The inclined surface design of the push block can reduce wear during movement and extend the service life of the equipment, especially after long-term use, it can also maintain stable performance.

[0026] In some embodiments of the present application, two upper and lower ridges are provided in the limit groove, which are recorded as an upper ridge and a lower ridge, and a flaring guide channel is formed between the upper ridge and the lower ridge, and a closing guide channel is formed above the upper ridge; the lower ridge is inclined, and the latch on the push rod maintains contact with the lower ridge under the action of a linear spring, and the lower ridge pushes the push rod to move upward; the upper ridge is horizontally arranged and one end is bent downward to form a guide section, and the latch passing through the flaring guide channel enters the closing guide channel along the guide section, and the latch on the push rod maintains contact with the upper ridge under the action of the linear spring, and the upper ridge makes the push rod in a state of no contact with the push block.

[0027] The design of the upper and lower ridges can simply form a flaring guide channel and a closing guide channel, which can effectively guide the movement of the push rod, ensuring that the push rod always maintains the correct trajectory during the pen advancement and retraction process, thereby reducing deviation. By setting the lower ridge in an inclined manner, the angle of forward rotation of the mounting plate can be adjusted according to actual needs, thereby adjusting the opening distance of the first pen clamping assembly and the second pen clamping assembly. The guide section of the upper ridge provides good stability for the clamping cam, which can effectively prevent the push rod from getting stuck or deviating during movement, thereby ensuring the reliability and durability of the equipment. The design of the limit slot structure of the present application reduces the reliance on complex mechanical structures, utilizes simple ridges and guide channels to achieve efficient movement of the push rod, and reduces manufacturing and maintenance costs.

[0028] In some embodiments of the present application, the mounting seat is provided with mounting grooves for inserting the shaft members of the first pen clamping assembly and the second pen clamping assembly, a circular ring member and a limiting column are provided on the top of the mounting seat, the mounting disk is sleeved outside the circular ring member and rotates around the circular ring member, an arc-shaped groove is provided on the surface of the mounting disk, the limiting column passes through the arc-shaped groove, and the elastic member is a hoop, one end of the hoop is connected to the limiting column, and the other end of the hoop is connected to the mounting disk.

[0029] In the present application, the mounting plate is mounted on the mounting seat to form a mounting space for accommodating the first pen clamp assembly and the second pen clamp assembly. The circular ring and the limit column on the mounting seat can well limit the stability of the movement of the mounting plate, ensuring that the mounting plate can move along a predetermined motion trajectory.

[0030] The above-mentioned implementation modes can be combined arbitrarily based on the common knowledge in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present application will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present application. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0032] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 The decomposition structure of this application is shown below: Figure 1 ; Figure 3 The decomposition structure of this application is shown below: Figure 2 ; Figure 4 This is a schematic diagram of the structure of this application without the mounting seat installed; Figure 5 It is a structural schematic diagram of the mounting seat in this application.

[0033] Among them, the specific descriptions of the accompanying drawings are as follows: 1. First pen clamp assembly; 2. Second pen clamp assembly; 3. Scroll; 4. Mounting plate; 5. Elastic member; 6. Push rod; 7. Slide groove; 8. Push block; 8a. Side push surface; 9. Mounting seat; 10. Limiting groove; 11. Expanding guide channel; 12. Closing guide channel; 13. Boss; 14. Circular ring; 15. Limiting column; 16. Linear spring; 17. Guide groove; 18. Boss; 19. Upper convex ridge; 20. Lower convex ridge; 21. Arc-shaped notch. DETAILED DESCRIPTION

[0034] The present application is described in detail below in conjunction with the accompanying drawings.

[0035] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] A pen feeding clamping mechanism, embodiment 1 Figures 1 to 4 As shown: it includes a first pen clamping component 1, a second pen clamping component 2, a scroll 3 and a mounting plate 4, the mounting plate 4 is mounted above the scroll 3, the first pen clamping component 1 and the second pen clamping component 2 are respectively connected to the mounting plate 4, and the mounting plate 4 rotates to drive the first pen clamping component 1 and the second pen clamping component 2 to clamp together or to expand away from each other; in the present application, the mounting plate 4 plays a role in driving the first pen clamping component 1 and the second pen clamping component 2 to move synchronously.

[0037] The mounting plate 4 is connected to an elastic member 5, and the elastic member 5 applies a force to the mounting plate 4 to rotate in the opposite direction, thereby driving the first pen clamping assembly 1 and the second pen clamping assembly 2 to approach each other; In the initial state, the mounting disc 4 is in contact with the vortex 3, and the rotation of the vortex 3 drives the mounting disc 4 in contact with it to rotate forward, thereby driving the first pen clamping assembly 1 and the second pen clamping assembly 2 to expand. The present application adopts the design of the vortex 3 to drive the mounting disc 4 to rotate, and can directly apply the power drive of the original pencil sharpener without the need for an additional power device. This allows the present application to be simply applied in the pencil sharpener, without making too many changes to the original pencil sharpener structure, thereby reducing the production and processing cost of the product. After the mounting disc 4 rotates forward at a predetermined angle, it disengages from the vortex 3, and the mounting disc 4 loses the thrust of the vortex 3, and then rotates in the reverse direction under the action of the elastic member 5 to return to the initial state. The mounting disc 4 is subjected to the forces applied to it by two structures, one of which is the force applied by the elastic member 5 to the mounting disc 4 to rotate in the reverse direction, which is the normal force. The other is the force applied by the vortex 3 to the mounting disc 4 to push the mounting disc 4 to rotate forward when the mounting disc 4 is in contact with the vortex 3.

[0038] The present application further arranges that in the initial state, the mounting disc 4 is in contact with the vortex disc 3, and after the mounting disc 4 rotates forward by a predetermined angle, the mounting disc 4 will be disengaged from the vortex disc 3, and will not be subjected to the thrust of the vortex disc 3 but only to the normal force of the elastic member 5, and then the vortex disc 3 will swirl (reversely rotate) to return to the initial state. This is a reciprocating process, that is, the first pen clamp assembly 1 and the second pen clamp assembly 2 of the present application will continuously repeat the tooling states of opening, contracting, opening, and contracting when no pencil is inserted. Then when the user inserts the pencil, even if the pencil has a large diameter, the first pen clamp assembly 1 and the second pen clamp assembly 2 can be easily inserted in the expanded state. If the first pen clamp assembly 1 and the second pen clamp assembly 2 are in the contracted state when the pencil is inserted, the user only needs to wait a little, waiting for the first pen clamp assembly 1 and the second pen clamp assembly 2 to expand, and then it can be inserted smoothly. In the present application, the reciprocating cycle of the mounting disc 4 is relatively short, and the user can insert the pencil smoothly without a long time of obstruction. This design improves the efficiency of the pencil's movement and greatly improves the user experience, making the pencil sharpening process smoother and more convenient.

[0039] To sum up, the pencil sharpener feeding mechanism provided in the present application not only solves the problem of difficulty in feeding and retracting pens encountered by users when using pencil sharpeners in the prior art, but also improves the overall performance and user experience of the pencil sharpener through innovative structural design, and has high practical value and market application prospects.

[0040] In the present application, the forward rotation and reverse rotation of the mounting plate 4 are intended to express that the rotation directions of the two are opposite. The forward rotation and reverse rotation do not have a specific rotation direction.

[0041] Embodiment 2, as Figures 2 to 4 As shown, the mounting plate 4 is provided with a vertically arranged chute 7, and a push rod 6 is connected in the chute 7 through a linear spring 16. The linear spring 16 applies a downward thrust to the push rod 6, and the push rod 6 contacts the surface of the scroll 3 under the action of the linear spring 16. In the present application, the push rod 6 can only move up and down relative to the mounting plate 4, so the scroll 3 can drive the rotation of the mounting plate 4 by pushing the push rod 6. The push rod 6 is kept in a downwardly extended state under the action of the linear spring 16.

[0042] The scroll 3 is connected to a power device, and the power device drives the scroll 3 to rotate. The surface of the scroll 3 is provided with a push block 8 corresponding to the push rod 6. The scroll 3 rotates to drive the push block 8 to rotate. The rotating push block 8 contacts the push rod 6 and pushes the mounting plate 4 to rotate through the push rod 6. The traditional scroll 3 structure is a simple disc-shaped structure, which cannot directly drive the rotation of the mounting plate 4. The present application realizes that the scroll 3 rotates to drive the mounting plate 4 to rotate by adding a push block 8 to the scroll 3 and cooperating with the push block 8 and the push rod 6. In order to further shorten the cycle of the cyclic motion of the mounting plate 4, the present application can set multiple push blocks 8 at intervals on the scroll 3.

[0043] The push block 8 includes a side push surface 8a in contact with the push rod 6. When the push rod 6 contacts the side push surface 8a of the push block 8, it can be pushed by the rotating scroll 3. When the push rod 6 moves upward and disengages from the side push surface 8a of the push block 8, the mounting plate 4 loses the thrust of the scroll 3. The top surface of the push block 8 is composed of two inclined surfaces, and the top surface of the push block 8 is an inverted V-shaped structure. The bottom surface of the push rod 6 is an inclined surface.

[0044] When the push rod 6 moves upward and leaves the side push surface 8a of the push block 8, the design of the top surface structure of the push block 8 and the design of the bottom surface structure of the push rod 6 enable the mounting plate 4 to quickly lose the thrust of the scroll 3. Then the pencil clamping assembly adjusts the clamping according to the diameter of the pencil. The inclined surface design of the push block 8 can reduce wear during movement and extend the service life of the device, especially after long-term use, it can also maintain stable performance.

[0045] The mounting plate 4 is provided with two symmetrically arranged guide grooves 17, and the first pen clamping assembly 1 and the second pen clamping assembly 2 are both provided with protrusions 18, and the protrusions 18 on the first pen clamping assembly 1 and the protrusions 18 on the second pen clamping assembly 2 respectively extend into the corresponding guide grooves 17; when the mounting plate 4 rotates, the protrusions 18 on the first pen clamping assembly 1 and the protrusions 18 on the second pen clamping assembly 2 slide along the guide grooves 17. That is, in the present application, the mounting plate 4 and the first pen clamping assembly 1 and the second pen clamping assembly 2 are a linkage structure, and the rotation of the mounting plate 4 will drive the first pen clamping assembly 1 and the second pen clamping assembly 2 to move away from and approach each other, and at the same time, the expansion or retraction of the first pen clamping assembly 1 and the second pen clamping assembly 2 will also drive the rotation of the mounting plate 4.

[0046] When a pencil is inserted between the first pen clamp assembly 1 and the second pen clamp assembly 2, the first pen clamp assembly 1 and the second pen clamp assembly 2 are kept in an open state by the force of the pencil; at this time, the mounting plate 4 is subjected to the force exerted by the first pen clamp assembly 1 and the second pen clamp assembly 2, as well as the force exerted by the elastic member 5, so that the mounting plate 4 is maintained in a balanced state.

[0047] When the pencil is not inserted into the first pen clamping assembly 1 and the second pen clamping assembly 2, the clamping protrusion 13 performs a circular motion in the limiting groove 10. When the pencil is inserted into the first pen clamping assembly 1 and the second pen clamping assembly 2, the pencil will limit the reverse rotation of the mounting plate 4, so the clamping protrusion 13 stops the circular motion after entering the closing guide channel 12 and moving a certain distance. The distance that the clamping protrusion 13 moves in the closing guide channel 12 depends on the diameter of the inserted pencil. That is, if the diameter of the pencil is large, the distance that the mounting plate 4 rotates (reversely rotates) will be shorter, and the first pen clamping assembly 1 and the second pen clamping assembly 2 will be larger; if the diameter of the inserted pencil is small, the distance that the mounting plate 4 rotates (reversely rotates) will be longer, and the first pen clamping assembly 1 and the second pen clamping assembly 2 will be smaller. In other words, after the pencil is inserted into the first pen clamping assembly 1 and the second pen clamping assembly 2, the mounting plate 4, the push rod 6, and the clamping protrusion 13 will stay and will not return to the initial position until the pencil is withdrawn. At this time, the force of the first pen clamping assembly 1 and the second pen clamping assembly 2 to clamp the pencil comes from the elastic member 5.

[0048] The rest of the content of the second embodiment is the same as that of the first embodiment.

[0049] Embodiment three, as Figures 2 to 5 As shown, the present application further includes a mounting seat 9, the mounting disk 4 is mounted on the mounting seat 9, the push rod 6 passes through the mounting seat 9 along the inner wall surface of the mounting seat 9 and contacts the scroll 3, the inner wall surface of the mounting seat 9 is provided with a limiting groove 10, the limiting groove 10 is provided with an expansion guide channel 11 and a closing guide channel 12, and the push rod 6 is provided with a clamping protrusion 13, and the clamping protrusion 13 is embedded in the limiting groove 10. In the present application, by providing the limiting groove 10, the clamping protrusion 13 on the push rod 6 is embedded in the limiting groove 10, thereby limiting the movement trajectory of the push rod 6, thereby limiting the movement trajectory of the mounting disk 4.

[0050] The flaring guide channel 11 is an inclined channel, and the forward rotation of the mounting disk 4 drives the latch 13 to move along the flaring guide channel 11. The latch 13 moving in the flaring guide channel 11 is subjected to the thrust of the flaring guide channel 11, so that the push rod 6 moves upward and gradually moves away from the scroll 3; when the latch 13 moves to the end of the flaring guide channel 11, the push rod 6 disengages from the push block 8, and the mounting disk 4 is not subjected to the thrust of the scroll 3. At this time, the mounting disk 4 is only subjected to the force of the elastic member 5, and the mounting disk 4 rotates in the opposite direction to drive the latch 13 to enter the closing guide channel 12. The latch 13 passes through the closing guide channel 12 under the action of the elastic member 5. The closing guide channel 12 is a horizontally arranged channel. When the latch 13 is located in the closing guide channel 12, the push rod 6 remains in a non-contact state with the push block 8; when the latch 13 passes through the closing guide channel 12, the push rod 6 moves downward under the action of the linear spring 16 until it contacts and connects with the scroll 3.

[0051] The forward rotation of the mounting plate 4 is combined with the movement of the clamping protrusion 13, and the pre-expansion function of the pen-feed clamping mechanism is realized through a simple mechanical structure setting, so that the user can insert the pencil more smoothly without resistance, and the device can be operated more smoothly, reducing mechanical friction and wear. The design can quickly respond to the user's operation, ensuring that the push rod 6 can quickly adjust its position when the pencil is inserted or withdrawn, thereby improving the user experience. The simple channel design reduces the need for complex mechanical structures, reduces manufacturing and maintenance costs, and makes the product more competitive in the market. Due to the relatively simple structure, it is easier for users to perform maintenance and troubleshooting in daily use, reducing the technical threshold during use.

[0052] The limiting groove 10 is provided with two upper and lower ridges, which are marked as an upper ridge 19 and a lower ridge 20. A flaring guide channel 11 is formed between the upper ridge 19 and the lower ridge 20, and a closing guide channel 12 is formed above the upper ridge 19; the lower ridge 20 is arranged obliquely, and the locking protrusion 13 on the push rod 6 is kept in contact with the lower ridge 20 under the action of the linear spring 16, and the lower ridge 20 pushes the push rod 6 to move upward; the upper ridge 19 is arranged horizontally and one end is bent downward to form a guide section, and the locking protrusion 13 passing through the flaring guide channel 11 enters the closing guide channel 12 along the guide section, and the locking protrusion 13 on the push rod 6 is kept in contact with the upper ridge 19 under the action of the linear spring 16, and the upper ridge 19 makes the push rod 6 in a non-contact state with the push block 8.

[0053] The design of the upper and lower ridges can simply form a flaring guide channel 11 and a closing guide channel 12, which can effectively guide the movement of the push rod 6, ensuring that the push rod 6 always maintains the correct trajectory during the pen advance and retreat process, and reduces deviation. Through the tilt setting of the lower ridge 20, the angle of forward rotation of the mounting plate 4 can be adjusted according to actual needs, thereby adjusting the distance between the first pen clamping assembly 1 and the second pen clamping assembly 2. The guide section of the upper ridge 19 provides good stability for the clamping cam 13, which can effectively prevent the push rod 6 from getting stuck or deviating during movement, ensuring the reliability and durability of the equipment. The design of the limit groove 10 structure of the present application reduces the reliance on complex mechanical structures, and uses simple ridges and guide channels to achieve efficient movement of the push rod 6, reducing manufacturing and maintenance costs.

[0054] The mounting seat 9 is provided with mounting grooves for inserting the shaft members of the first pen clamping assembly 1 and the second pen clamping assembly 2. A circular ring member 14 and a limiting column 15 are provided on the top of the mounting seat 9. The mounting plate 4 is sleeved on the outside of the circular ring member 14 and rotates around the circular ring member 14. An arc-shaped notch 21 is opened on the surface of the mounting plate 4, and the limiting column 15 passes through the arc-shaped notch 21. The elastic member 5 adopts a hoop, one end of which is connected to the limiting column 15, and the other end of the hoop is connected to the mounting plate 4.

[0055] In the present application, the mounting plate 4 is mounted on the mounting seat 9 to form a mounting space for accommodating the first pen clamp assembly 1 and the second pen clamp assembly 2. The circular ring 14 and the limiting column 15 on the mounting seat 9 can well limit the stability of the movement of the mounting plate 4, ensuring that the mounting plate 4 can move along a predetermined motion trajectory.

[0056] The other contents of the third embodiment are the same as those of the first embodiment or the second embodiment.

[0057] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A pen feeding clamping mechanism, characterized in that: The invention comprises a first pen clamping assembly (1), a second pen clamping assembly (2), a vortex (3) and a mounting plate (4); the mounting plate (4) is mounted above the vortex (3); the first pen clamping assembly (1) and the second pen clamping assembly (2) are respectively connected to the mounting plate (4); the mounting plate (4) rotates to drive the first pen clamping assembly (1) and the second pen clamping assembly (2) to move closer to each other for clamping or to move away from each other for expansion; The mounting plate (4) is connected to an elastic member (5), and the elastic member (5) applies a force to the mounting plate (4) to rotate in the opposite direction, thereby driving the first pen clamping assembly (1) and the second pen clamping assembly (2) to move closer to each other; In the initial state, the mounting disc (4) is in contact with the scroll (3), and the rotation of the scroll (3) drives the mounting disc (4) in contact with it to rotate in the forward direction, thereby driving the first pen clamping assembly (1) and the second pen clamping assembly (2) to expand. After the mounting disc (4) rotates in the forward direction at a predetermined angle, it is disengaged from the scroll (3), and the mounting disc (4) loses the thrust of the scroll (3), and then rotates in the reverse direction under the action of the elastic member (5) to return to the initial state.

2. A pen feed clamping mechanism according to claim 1, characterized in that: The mounting plate (4) is provided with a vertically arranged slide groove (7), and a push rod (6) is connected to the slide groove (7) via a linear spring (16). The linear spring (16) applies a downward thrust to the push rod (6), and the push rod (6) contacts the surface of the scroll (3) under the action of the linear spring (16).

3. A pen feeding clamping mechanism according to claim 2, characterized in that: The scroll (3) is connected to a power device, and when the power device is in operation, the scroll (3) is driven to rotate. A push block (8) corresponding to the push rod (6) is provided on the surface of the scroll (3). The rotation of the scroll (3) drives the push block (8) to rotate. When the rotating push block (8) contacts the push rod (6), the push rod (6) pushes the mounting plate (4) to rotate.

4. A pen feed clamping mechanism according to claim 2, characterized in that: It also includes a mounting seat (9), the mounting disc (4) is mounted on the mounting seat (9), the push rod (6) passes through the mounting seat (9) along the inner wall surface of the mounting seat (9) and contacts the scroll (3), the inner wall surface of the mounting seat (9) is provided with a limit groove (10), the limit groove (10) is provided with an expansion guide channel (11) and a closing guide channel (12), and the push rod (6) is provided with a clamping protrusion (13), and the clamping protrusion (13) is embedded in the limit groove (10).

5. A pen feed clamping mechanism according to claim 4, characterized in that: The flaring guide channel (11) is an inclined channel, and the forward rotation of the mounting plate (4) drives the latching protrusion (13) to move along the flaring guide channel (11). The latching protrusion (13) moving in the flaring guide channel (11) is thrusted by the flaring guide channel (11), causing the push rod (6) to move upward and gradually move away from the scroll (3); When the latching protrusion (13) moves to the end of the flaring guide channel (11), the push rod (6) is separated from the push block (8), and the mounting plate (4) is not subjected to the thrust of the scroll plate (3). At this time, the mounting plate (4) is only subjected to the force of the elastic member (5). The mounting plate (4) rotates in the opposite direction to drive the latching protrusion (13) into the closing guide channel (12). The latching protrusion (13) passes through the closing guide channel (12) under the action of the elastic member (5). The closing guide channel (12) is a horizontally arranged channel. When the latching protrusion (13) is located in the closing guide channel (12), the push rod (6) remains in a non-contact state with the push block (8). When the latching protrusion (13) passes through the closing guide channel (12), the push rod (6) moves downward under the action of the linear spring (16) until it contacts and connects with the scroll (3).

6. A pen feed clamping mechanism according to claim 5, characterized in that: The mounting plate (4) is provided with two symmetrically arranged guide grooves (17); the first pen clamping assembly (1) and the second pen clamping assembly (2) are both provided with convex columns (18); the convex columns (18) on the first pen clamping assembly (1) and the convex columns (18) on the second pen clamping assembly (2) respectively extend into corresponding guide grooves (17); when the mounting plate (4) rotates, the convex columns (18) on the first pen clamping assembly (1) and the convex columns (18) on the second pen clamping assembly (2) slide along the guide grooves (17) in which they are located.

7. A pen feed clamping mechanism according to claim 6, characterized in that: When a pencil is inserted between the first pen clamping assembly (1) and the second pen clamping assembly (2), the first pen clamping assembly (1) and the second pen clamping assembly (2) are kept in an open state by the force exerted by the pencil; at this time, the mounting plate (4) is subjected to the force exerted by the first pen clamping assembly (1) and the second pen clamping assembly (2) as well as the force exerted by the elastic member (5), so that the mounting plate (4) is kept in a balanced state.

8. A pen feed clamping mechanism according to claim 3, characterized in that: The push block (8) includes a side push surface (8a) in contact with the push rod (6); when the push rod (6) contacts the side push surface (8a) of the push block (8), it can be pushed by the rotating scroll (3); when the push rod (6) moves upward and separates from the side push surface (8a) of the push block (8), the mounting plate (4) loses the thrust of the scroll (3); the top surface of the push block (8) is composed of two inclined surfaces, the top surface of the push block (8) is an inverted V-shaped structure, and the bottom surface of the push rod (6) is an inclined surface.

9. A pen feed clamping mechanism according to claim 4, characterized in that: The limiting groove (10) is provided with two upper and lower ridges, which are marked as an upper ridge (19) and a lower ridge (20). An expansion guide channel (11) is formed between the upper ridge (19) and the lower ridge (20), and a closing guide channel (12) is formed above the upper ridge (19); the lower ridge (20) is arranged obliquely, and the locking protrusion (13) on the push rod (6) is kept in contact with the lower ridge (20) under the action of the linear spring (16), and the lower ridge (20) pushes the push rod (6) to move upward; the upper ridge (19) is arranged horizontally and one end is bent downward to form a guide section, and the locking protrusion (13) passing through the expansion guide channel (11) enters the closing guide channel (12) along the guide section, and the locking protrusion (13) on the push rod (6) is kept in contact with the upper ridge (19) under the action of the linear spring (16), and the upper ridge (19) makes the push rod (6) in a non-contact state with the push block (8).

10. A pen feed clamping mechanism according to claim 4, characterized in that: The mounting seat (9) is provided with mounting grooves for inserting shaft members of the first pen clamping assembly (1) and shaft members of the second pen clamping assembly (2); a circular ring member (14) and a limiting column (15) are provided on the top of the mounting seat (9); the mounting plate (4) is sleeved on the circular ring member (14) and rotates around the circular ring member (14); a circular arc-shaped notch (21) is provided on the surface of the mounting plate (4); the limiting column (15) passes through the circular arc-shaped notch (21); the elastic member (5) is a hoop, one end of the hoop is connected to the limiting column (15), and the other end of the hoop is connected to the mounting plate (4).

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