A pen tip positioning device

Abstract

This utility model provides a pen tip positioning device, relating to the field of pen tip manufacturing technology. It includes several positioning blocks and an inner shell. The inner shell is hinged to the positioning blocks, and the outer sides of the positioning blocks are provided with sliding grooves. A reciprocating rod, corresponding one-to-one in position and number to the sliding grooves, is slidably connected through the inner shell. A cylinder, slidably connected to the sliding grooves, is fixedly connected to the bottom end of the reciprocating rod. By setting up several positioning blocks, an inner shell, a reciprocating rod, a cylinder, a rack, a double-ended bevel gear, and a gear, synchronous linkage of the positioning blocks is achieved. The inner shell is hinged to the positioning blocks, the outer sides of the positioning blocks are provided with sliding grooves, the cylinder at the bottom end of the reciprocating rod is slidably connected to the sliding grooves, and the rack at the top end meshes with the gear. The gear is fixed on the intermediate shaft of the double-ended bevel gear, and the double-ended bevel gear meshes head-to-tail, allowing the positioning blocks to open or close synchronously, ensuring the accuracy of pen tip positioning.

Description

Technical Field

[0001] This utility model relates to the field of pen tip manufacturing technology, and in particular to a pen tip positioning device. Background Technology

[0002] Currently, there are many types of paintbrushes, and outlining pens are one of them. Outlining pens have finer tips than watercolor brushes. In the early days, the tip was installed manually, which was extremely inefficient.

[0003] Therefore, a prior art pen tip insertion device, disclosed in CN212552583U, includes a positioning mechanism comprising a mounting base on a base, a cavity communicating with a pen tip slide groove, a positioning block within the cavity, and a through hole for a pin to pass through. The mounting base has an opening at the end facing the pin, and the positioning block has an elastic element that causes it to open and close. The pen tip is driven into the cavity of the mounting base by the pin. The positioning block has a through hole, allowing the pen tip to enter through the hole and pass through the opening, thus inserting into the pen barrel, achieving pen tip installation. The elastic element allows the positioning block to open when the pin is inserted into the through hole, allowing the pin to pass through, while also enclosing the pin and fixing it in place to prevent deviation and ensure the pen tip is aligned with the pen barrel. The elastic element is a rubber ring, and there are three positioning blocks, each separately positioned.

[0004] The device uses a rubber ring to open and close the positioning blocks, which in turn helps the pin push the pen tip to complete the insertion. However, when the positioning blocks are set as three separate structures, the elasticity of the rubber ring is difficult to be perfectly uniform, and there are slight differences in the contact area and force points between the three positioning blocks and the rubber ring. During the insertion or withdrawal of the pin, the force exerted by the rubber ring on the three positioning blocks is often inconsistent, which can easily lead to deviations in the opening range and retraction distance of the positioning blocks. This can cause the pin to jam in the perforation, affecting the smoothness of pen tip pushing; or even lead to inaccurate pen tip positioning. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art and to propose a pen tip positioning device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pen tip positioning device, comprising a plurality of positioning blocks and an inner shell, wherein the inner side of the inner shell is hinged to the plurality of positioning blocks, and the outer sides of the plurality of positioning blocks are provided with sliding grooves, wherein the inner shell is slidably connected to a reciprocating rod corresponding to the position and number of the plurality of sliding grooves, wherein the bottom end of the reciprocating rod is fixedly connected to a cylinder slidably connected to the sliding groove, wherein the top end of the reciprocating rod is fixedly connected to a rack, wherein the outer side of the inner shell is rotatably connected to a double-headed bevel gear corresponding to the position and number of the plurality of racks, wherein the intermediate shaft of the double-headed bevel gear is fixedly connected to a gear meshing with the corresponding rack, and the plurality of double-headed bevel gears mesh head to tail.

[0007] Preferably, a spring box is fixedly connected to the outer side of the inner shell and passes through the intermediate shaft of the double-headed bevel gear, and a spring is provided inside the spring box.

[0008] Preferably, the inner end of the spring is fixed to the intermediate shaft of the double-headed bevel gear, and the outer end is fixed to the inner sidewall of the spring box.

[0009] Preferably, the inner shell is fixedly connected to a plurality of hinges, and the other ends of the hinges are respectively fixed to a plurality of positioning blocks.

[0010] Preferably, an outer shell is fixedly connected to the outside of the inner shell, and mounting plates are fixedly connected to both sides of the outer shell.

[0011] Preferably, the double-headed bevel gear, rack, and spring box are all disposed between the outer shell and the inner shell.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting several positioning blocks, an inner shell, a reciprocating rod, a cylinder, a rack, a double-headed bevel gear, and a gear, the positioning blocks are synchronously linked. The inner side of the inner shell is hinged to the positioning blocks, and a sliding groove is opened on the outer side of the positioning blocks. The cylinder at the bottom of the reciprocating rod is slidably connected to the sliding groove, and the rack at the top meshes with the gear. The gear is fixed on the intermediate shaft of the double-headed bevel gear, and the double-headed bevel gear meshes head to tail, so that the positioning blocks can open or close synchronously, ensuring the accuracy of pen tip positioning.

[0014] 2. In this utility model, by setting a spring box and a spring, an automatic driving force is provided for the resetting of the positioning block. The spring box is fixed on the outside of the inner shell. The inner end of the spring inside is fixed to the intermediate shaft of the double-headed bevel gear, and the outer end is fixed to the inner side wall of the spring box. When the positioning block opens, the spring stores force. After the external force disappears, the potential energy is released to drive the positioning block to reset and close. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of a pen tip positioning device;

[0016] Figure 2 This is a three-dimensional structural diagram of the double-headed bevel gear in this utility model;

[0017] Figure 3 In this utility model Figure 2 A side-section three-dimensional structural diagram;

[0018] Figure 4 This is a cross-sectional view of the spring in this utility model.

[0019] Legend: 1. Outer shell; 2. Inner shell; 3. Positioning block; 4. Rack; 5. Double-ended bevel gear; 6. Gear; 7. Spring box; 8. Slide groove; 9. Reciprocating rod; 10. Cylinder; 11. Mounting plate; 12. Spring; 13. Hinge. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] like Figure 1-4 As shown, a pen tip positioning device includes several positioning blocks 3 and an inner shell 2. The inner shell 2 is hinged to the several positioning blocks 3. The outer sides of the several positioning blocks 3 are provided with sliding grooves 8. The inner shell 2 is slidably connected to a reciprocating rod 9 that corresponds to the position and number of the several sliding grooves 8. The bottom end of the reciprocating rod 9 is fixedly connected to a cylinder 10 that is slidably connected to the sliding groove 8. The top end of the reciprocating rod 9 is fixedly connected to a rack 4. The outer side of the inner shell 2 is rotatably connected to a double-headed bevel gear 5 that corresponds to the position and number of the several racks 4. The middle shaft of the double-headed bevel gear 5 is fixedly connected to a gear 6 that meshes with the corresponding rack 4. The several double-headed bevel gears 5 mesh head to tail.

[0023] In this technical solution, the structural design realizes the synchronous linkage of the positioning block 3, thereby accurately controlling the positioning action of the pen tip. Specifically, when the positioning block 3 rotates, it drives the slide groove 8 to move, thereby driving the reciprocating rod 9 to slide in the slide groove 8 and to move back and forth in the up and down direction. Then, the rack 4 moves back and forth in the up and down direction and drives the gear 6 to rotate. When one of the double-headed bevel gears 5 rotates, due to the meshing of several double-headed bevel gears 5, it will drive the other double-headed bevel gears 5 to rotate together.

[0024] like Figure 4 As shown, a spring box 7 is fixedly connected to the outer side of the inner shell 2 and passes through the intermediate shaft of the double-headed bevel gear 5. A spring 12 is provided inside the spring box 7. The inner end of the spring 12 is fixed to the intermediate shaft of the double-headed bevel gear 5, and the outer end is fixed to the inner side wall of the spring box 7.

[0025] In this technical solution, the spring box 7 and spring 12 provide automatic driving force for the reset of the positioning block 3. When the positioning block 3 is opened by external force, it will drive the gear 6 to rotate through the slide groove 8, cylinder 10, reciprocating rod 9 and rack 4, thereby causing the intermediate shaft of the double-headed bevel gear 5 to rotate synchronously. At this time, the spring 12 is twisted and stored (the inner end rotates with the intermediate shaft, and the outer end is fixed to the inner wall of the spring box 7, producing elastic deformation).

[0026] When the external force disappears, the spring 12 releases its elastic potential energy, causing the intermediate shaft of the double-headed bevel gear 5 to rotate in the opposite direction. Through the transmission of gear 6, rack 4, reciprocating rod 9, cylinder 10 and slide 8, the positioning block 3 is finally pulled to reset and close, ensuring that the positioning block 3 maintains a stable clamping state on the pen tip when there is no external force, thus improving the automatic reset capability and positioning reliability of the device.

[0027] like Figure 3 As shown, several hinges 13 are fixedly connected to the inner side of the inner shell 2, and the other end of the hinges 13 is fixed to several positioning blocks 3 respectively.

[0028] In this technical solution, the hinge 13 provides a stable hinge fulcrum for the positioning block 3, enabling the positioning block 3 to rotate flexibly around the hinge 13 as an axis, thereby realizing the action of opening or closing.

[0029] like Figure 1 and Figure 2 As shown, the inner shell 2 is fixedly connected to the outer shell 1, and the outer shell 1 is fixedly connected to both sides of the outer shell 1. The double-headed bevel gear 5, the rack 4 and the spring box 7 are all arranged between the outer shell 1 and the inner shell 2.

[0030] In this technical solution, the outer shell 1 forms a protective structure, providing reliable protection for the transmission components inside the device. The outer shell 1 encloses components such as the double-headed bevel gear 5, rack 4, and spring box 7 between the inner shell 2 and the outer shell 1, which can effectively isolate the transmission structure from the influence of external dust, impurities, and collisions, reduce component wear, and extend the service life of the device.

[0031] Meanwhile, the mounting plates 11 on both sides of the outer casing 1 provide convenient interfaces for the fixed installation of the entire device.

[0032] The invention is used as follows: First, the device is fixed to the corresponding equipment via the mounting plates 11 on both sides of the outer shell 1. When the pen tip enters the inner shell 2, the external force causes the positioning block 3 to open around the hinge 13. The sliding groove 8 on the outer side of the positioning block 3 drives the cylinder 10 at the bottom of the reciprocating rod 9 to slide, causing the reciprocating rod 9 to move, which in turn causes the rack 4 at the top to move. The rack 4 drives the gear 6 that meshes with it to rotate. The gear 6 is fixed on the intermediate shaft of the double-headed bevel gear 5, so the double-headed bevel gear 5 rotates accordingly. Several double-headed bevel gears 5 mesh head to tail to achieve synchronous rotation. At the same time, the intermediate shaft of the double-headed bevel gear 5 will twist the spring 12 in the spring box 7 to store energy. When the external force disappears, the spring 12 releases its elastic potential energy, causing the intermediate shaft of the double-headed bevel gear 5 to rotate in the opposite direction. Through the transmission of gear 6, rack 4, reciprocating rod 9, cylinder 10 and sliding groove 8, the positioning block 3 returns to its original position and closes, forming a stable clamp for the pen tip, thus completing the positioning operation.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A pen tip positioning device, comprising a plurality of positioning blocks (3), characterized in that: It also includes an inner shell (2), the inner shell (2) is hinged to a number of positioning blocks (3) on the inner side, and the number of positioning blocks (3) is provided with a sliding groove (8) on the outer side. The inner shell (2) is slidably connected to a reciprocating rod (9) corresponding to the position and number of the sliding grooves (8). The bottom end of the reciprocating rod (9) is fixedly connected to a cylinder (10) that is slidably connected to the sliding groove (8). The top end of the reciprocating rod (9) is fixedly connected to a rack (4). The outer side of the inner shell (2) is rotatably connected to a double-headed bevel gear (5) corresponding to the position and number of the racks (4). The middle shaft of the double-headed bevel gear (5) is fixedly connected to a gear (6) that meshes with the corresponding rack (4). The double-headed bevel gears (5) mesh head to tail.

2. The pen tip positioning device according to claim 1, characterized in that: The outer side of the inner shell (2) is fixedly connected to a spring box (7) that passes through the intermediate shaft of the double-headed bevel gear (5), and a spring spring (12) is provided inside the spring box (7).

3. The pen tip positioning device according to claim 2, characterized in that: The inner end of the spring (12) is fixed to the intermediate shaft of the double-headed bevel gear (5), and the outer end is fixed to the inner side wall of the spring box (7).

4. The pen tip positioning device according to claim 1, characterized in that: The inner shell (2) is fixedly connected to several hinges (13), and the other end of the hinges (13) is fixed to several positioning blocks (3).

5. The pen tip positioning device according to claim 4, characterized in that: The inner shell (2) is fixedly connected to the outer shell (1), and the outer shell (1) is fixedly connected to both sides of the outer shell (1) with mounting plates (11).

6. The pen tip positioning device according to claim 1, characterized in that: The double-headed bevel gear (5), rack (4) and spring box (7) are all located between the outer shell (1) and the inner shell (2).

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