Anti-drying mechanism for dotting pen

Abstract

The utility model relates to a dotting pen anti-dry mechanism. The dotting pen anti-dry mechanism comprises a fixing frame, a dotting marking pen and an opening and closing assembly. The dotting marking pen is arranged on the fixing frame in a liftable mode. The opening and closing assembly comprises two opening and closing swing blocks which are arranged at one end of the fixing frame and can swing, containing cavities used for containing water absorption sponges are formed in the opening and closing swing blocks, the two opening and closing swing blocks make contact in a closed mode to form a moisturizing groove wrapping the point of the dotting marking pen, and the point of the dotting marking pen makes contact with the water absorption sponges in the moisturizing groove. The dotting pen anti-dry mechanism is arranged in the mode that when the dotting marking pen descends for dotting, the two opening and closing swing blocks are in a separated state. The two opening and closing swing blocks form the moisturizing groove to wrap the pen point so that the pen point can make contact with the water absorption sponge to absorb water and keep moist in the placing process, and the service life of the dotting marking pen is prolonged. Meanwhile, when the dotting marking pen descends for dotting, the two opening and closing swing blocks can be separated, the complexity that a traditional pen cap needs manual operation is avoided, and it is guaranteed that the pen point of the dotting marking pen is not blocked or interfered in the descending track.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a mechanism for preventing the dot pen from drying out. Background Technology

[0002] In industrial production, dot markers are widely used in product inspection to mark defective products and distinguish them from qualified products. Water-based dot markers are widely used for marking defective products due to their environmentally friendly, non-toxic, and bright color characteristics.

[0003] However, due to the use of water-based ink formulations, the moisture evaporates quickly when the pen tip is exposed to air, causing the ink to dry out. Especially in intermittent work scenarios, dot-matrix pens often need to be left idle for extended periods. The continuous contact between the pen tip and air accelerates the drying process, leading to ink breaks, unclear markings, or even complete inability to write when reused, thus shortening the pen's lifespan. If a dried-out pen tip results in defective products being mislabeled, it could trigger serious quality traceability incidents. Although some manufacturers have attempted to slow down drying by adding pen caps to the pen tip, the high-speed operation of automated production lines makes manually opening and closing the caps impractical, failing to fundamentally solve the problem of dot-matrix pens drying out easily. Utility Model Content

[0004] The purpose of this invention is to provide a mechanism to prevent the marker pen from drying out. Two opening and closing levers form a moisturizing groove that encloses the marker pen tip. This allows the pen tip to contact an absorbent sponge and absorb moisture during storage, thus maintaining long-term moisture and extending the pen's lifespan. Simultaneously, when the marker pen descends to make dots, the two levers separate, avoiding the cumbersome manual operation required for traditional pen caps and ensuring the pen tip is unobstructed during its descent.

[0005] To achieve the above objectives, this utility model provides a mechanism for preventing the pen from drying out, comprising:

[0006] Fixture;

[0007] The dot marker is mounted on the fixed frame in a height-adjustable manner;

[0008] The opening and closing assembly includes two swing blocks that are disposed at one end of the fixed frame and can swing. Each swing block has a cavity for holding an absorbent sponge. The two swing blocks close and contact each other to form a moisturizing groove that encloses the tip of the dot marker pen. The tip of the dot marker pen contacts the absorbent sponge in the moisturizing groove.

[0009] The anti-drying mechanism of the marker pen is configured such that when the marker pen descends to make dots, the two opening and closing swing blocks are in a separated state.

[0010] Optionally, the opening and closing swing block has an L-shaped structure and includes a horizontal part and a vertical part. The moisturizing groove is opened between the horizontal parts of the two opening and closing swing blocks, and the vertical part is provided with opening and closing rollers.

[0011] Optionally, the dot pen anti-drying mechanism further includes:

[0012] A support platform, which is horizontally mounted on the fixed frame and can be raised and lowered along the fixed frame;

[0013] A drive cylinder is located at the other end of the fixed frame;

[0014] A wedge block, which passes vertically through the support platform and can be raised and lowered, has a limiting protrusion at one end, which is connected to the movable end of the drive cylinder. The other end of the wedge block is a pointed tip, which is located between the two opening and closing rollers and in contact with the opening and closing rollers when the two opening and closing swing blocks are in the closed state.

[0015] Optionally, a movable slide rail is vertically arranged on the fixed frame, a movable slide table is arranged on the movable slide rail, and the support platform is arranged on the movable slide table. The movable slide table and the movable slide rail cooperate to drive the support platform to move up and down.

[0016] Optionally, a clearance groove is provided between the horizontal portions of the two opening and closing swing blocks for avoiding the wedge block.

[0017] Optionally, a fixed platform is horizontally provided at the other end of the fixed frame, the driving cylinder is provided on the fixed platform, and a return spring is provided between the fixed platform and the bearing platform.

[0018] Optionally, one end of the fixing frame is provided with a limiting pivot, and the vertical end of the opening and closing swing block is oscillatingly sleeved on the limiting pivot.

[0019] Optionally, the opening and closing swing block is provided with a sponge water filling hole that communicates with the receiving cavity.

[0020] The beneficial effects of this invention are as follows: Two opening and closing swing blocks form a moisturizing groove that encloses the marker tip, allowing it to contact an absorbent sponge to absorb moisture during storage, thus maintaining long-term moisture and extending the marker's lifespan. Simultaneously, when the marker descends to make dots, the two swing blocks separate, avoiding the cumbersome manual operation required for traditional pen caps and ensuring unobstructed movement of the marker tip during its descent.

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a first schematic three-dimensional view of the anti-drying mechanism of a dot pen according to an embodiment of the present invention;

[0023] Figure 2 This is a second schematic three-dimensional view of the anti-drying mechanism of the dot pen according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural plan view of the anti-drying mechanism of a dot pen according to an embodiment of the present invention;

[0025] In the diagram: 1. Fixed frame; 11. Moving slide rail; 12. Moving slide table; 13. Fixed platform; 2. Marker pen; 3. Opening and closing assembly; 31. Opening and closing swing block; 311. Horizontal part; 312. Vertical part; 313. Sponge water filling hole; 32. Humidifying tank; 33. Opening and closing roller; 34. Clearance groove; 35. Limiting pivot; 4. Support platform; 5. Drive cylinder; 6. Wedge block; 61. Limiting protrusion; 62. Tip; 7. Return spring. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] Please see Figure 1 The dot marker anti-drying mechanism shown in a preferred embodiment of this application includes a fixed frame 1, a dot marker 2, and an opening and closing assembly 3. The dot marker 2 is vertically and vertically mounted on the fixed frame 1. The opening and closing assembly 3 includes two swing blocks 31 mounted at one end of the fixed frame 1 and capable of swinging. Each swing block 31 has a cavity for holding an absorbent sponge. The two swing blocks 31 close and contact each other to form a moisturizing groove 32 that surrounds the tip of the dot marker 2. The tip of the dot marker 2 contacts the absorbent sponge within the moisturizing groove 32. The dot marker anti-drying mechanism is configured such that the two swing blocks 31 are in a separated state when the dot marker 2 is lowered to make dots.

[0030] According to the embodiment of this utility model, two opening and closing swing blocks 31 form a moisturizing groove 32 that encloses the tip of the dot marker 2. This allows the tip of the dot marker 2 to contact the absorbent sponge and absorb moisture during placement, thus maintaining long-term moisture and extending the lifespan of the dot marker 2. Simultaneously, when the dot marker 2 descends to make dots, the two opening and closing swing blocks 31 separate, avoiding the cumbersome manual operation required for traditional pen caps and ensuring that the tip of the dot marker 2 is unobstructed during its descent.

[0031] The following detailed description uses specific examples:

[0032] Specifically, please see Figure 2 and Figure 3The opening and closing swing block 31 has an L-shaped structure and includes a horizontal part 311 and a vertical part 312. The moisturizing groove 32 is formed between the horizontal parts 311 of the two opening and closing swing blocks 31, and the vertical part 312 is provided with opening and closing rollers 33. The dot pen anti-drying mechanism also includes a support platform 4, a drive cylinder 5, and a wedge 6. The support platform 4 is horizontally set on the fixed frame 1 and can move up and down along the fixed frame 1. The drive cylinder 5 is set at the other end of the fixed frame 1. The wedge 6 passes vertically through the support platform 4 and can move up and down. One end of the wedge 6 is provided with a limiting protrusion 61, which is connected to the movable end of the drive cylinder 5. The other end of the wedge 6 is a tip 62. When the two opening and closing swing blocks 31 are in the closed state, the tip 62 is located between the two opening and closing rollers 33 and contacts the opening and closing rollers 33. In this embodiment, the two sides of the tip 62 of the wedge 6 are inwardly concave slopes, and the main body of the wedge 6 has a rectangular cross-section.

[0033] When the drive cylinder 5 begins to push the wedge 6 downward, the tip 62 of the wedge 6 is positioned between the two closed opening and closing rollers 33. The inclined surface thrust, generated by the tip 62 of the wedge 6 inserted into the gap between the rollers 33, forces the two opening and closing rollers 33 to swing outward and separate (converting the linear motion of the drive cylinder 5 into the swinging separation motion of the opening and closing rollers 31). Subsequently, the main body of the wedge 6 inserts between the two opening and closing rollers 33, and the two opening and closing rollers 31 no longer separate. The wedge 6 then continues to descend, pressing against and driving the support platform 4 and the marking pen 2 to descend as a whole, completing the marking action. During the descent of the marking pen, the opening and closing rollers 31 have already separated, allowing the pen tip to contact the workpiece surface without obstruction for marking. After marking is completed, the drive cylinder 5 retracts, and the wedge 6 rises, causing the tip 62 to return to the position between the two opening and closing rollers 33. At this time, the opening and closing swing block 31 closes again under the action of gravity, and the tip of the dot marker 2 re-enters the moisturizing tank 32 for moisturizing. This application achieves the simultaneous linkage of the opening and closing swing block 31 separation and the dot marker descent by using a single drive cylinder 5 in conjunction with the linear motion of the wedge 6, without the need for an additional power source or sensor. This avoids the inefficiency of traditional manual operation and solves the complexity problem of electric multi-axis control. Especially in high-speed automated production lines, the rapid response of the drive cylinder 5 and the high rigidity transmission of the wedge 6 ensure that the tip of the dot marker 2 remains moist even during hundreds of dotting actions per minute and long-term storage, significantly reducing the risk of missed markings due to dryness and reducing downtime for maintenance.

[0034] Further, please see Figure 2A vertically mounted sliding rail 11 is installed on the fixed frame 1, and a sliding table 12 is mounted on the sliding rail 11. The support platform 4 is mounted on the sliding table 12. The sliding table 12 and the sliding rail 11 cooperate to drive the support platform 4 to move up and down. The precision guiding structure of the sliding rail 11 and the sliding table 12 ensures the stability and verticality of the support platform 4 during the lifting process, avoiding marking position errors caused by the pen tip deviation of the marker pen 2.

[0035] Further, please see Figure 2 A clearance groove 34 is provided between the horizontal portions 311 of the two opening and closing swing blocks 31 to avoid the wedge block 6. The clearance groove 34 can avoid the wedge block 6 during the descent of the marker pen 2, so as to ensure that the marker pen 2 can descend a sufficient distance to perform the marking operation.

[0036] Please see Figure 2 The other end of the fixed frame 1 is horizontally provided with a fixed platform 13, and the drive cylinder 5 is mounted on the fixed platform 13. A return spring 7 is provided between the fixed platform 13 and the support platform 4. The return spring 7 can assist the support platform 4 to quickly return to its original position when the drive cylinder 5 retracts, ensuring the continuity of the mechanism's operation and the speed of response.

[0037] Specifically, please see Figure 3 In this embodiment, a limiting pivot 35 is provided at one end of the fixed frame 1, and the vertical part 312 of the opening and closing swing block 31 is swayably sleeved on the limiting pivot 35. The limiting pivot 35 can constrain the swing trajectory of the opening and closing swing block 31, prevent the opening and closing swing block 31 from rotating excessively or deviating, and improve the reliability of the mechanism.

[0038] Please see Figure 2 The opening and closing swing block 31 has a sponge water filling hole 313 that communicates with the receiving cavity. The sponge water filling hole 313 is provided to facilitate the periodic replenishment of moisturizing liquid to the absorbent sponge in the receiving cavity, thereby extending the replacement cycle of the absorbent sponge. In this embodiment, the sponge water filling hole 313 is provided on the horizontal part 311 of the opening and closing swing block 31.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dry-out prevention mechanism for a marking pen, characterized by The utility model relates to a fixed frame, a marking pen, a opening and closing component, a carrying table, a driving cylinder, a wedge and a fixed table. The utility model discloses a marking pen dryness prevention mechanism, which comprises a fixed frame, a marking pen, an opening and closing component, a carrying table, a driving cylinder, a wedge and a fixed table. The opening and closing component comprises two opening and closing swing blocks arranged at one end of the fixed frame and swingable, and the opening and closing swing blocks are provided with containing cavities for containing water-absorbing sponges. When the marking pen is used to mark, the two opening and closing swing blocks are separated. The opening and closing swing blocks are L-shaped structures comprising horizontal parts and vertical parts.

2. The dry-out prevention mechanism for a dotting pen according to claim 1, wherein The two opening and closing swing blocks are provided with opening and closing rollers.

3. The dry-out prevention mechanism for a dotting pen according to claim 2, wherein The utility model further comprises a carrying table horizontally arranged on the fixed frame and vertically movable along the fixed frame, a driving cylinder arranged at the other end of the fixed frame, a wedge vertically penetrating through the carrying table and vertically movable, a limiting block arranged at one end of the wedge and connected with the movable end of the driving cylinder, and a pointed end arranged at the other end of the wedge. The pointed end is located between the two opening and closing rollers and in contact with the opening and closing rollers when the two opening and closing swing blocks are closed. The fixed frame is vertically provided with a moving slide rail, and the moving slide rail is provided with a moving slide table. The carrying table is arranged on the moving slide table.

4. The dry-out prevention mechanism for a dotting pen according to claim 3, wherein The moving slide table and the moving slide rail cooperate to drive the carrying table to vertically move.

5. The dry-out prevention mechanism for a dotting pen according to claim 3, wherein The horizontal parts of the two opening and closing swing blocks are provided with avoiding grooves for avoiding the wedge.

6. The dry-out prevention mechanism for a dotting pen according to claim 3, wherein The other end of the fixed frame is horizontally provided with a fixed table, and the driving cylinder is arranged on the fixed table.

7. The dry-out prevention mechanism for a dotting pen according to claim 2, wherein The fixed table and the carrying table are provided with a reset spring.

8. The dry-out prevention mechanism for a dotting pen according to claim 1, wherein One end of the fixed frame is provided with a limiting rotating shaft, and the vertical part of the opening and closing swing block is swingably sleeved on the limiting rotating shaft. The opening and closing swing block is provided with a sponge water adding hole in communication with the containing cavity.

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