Accurate gel pen ink filling device
By using a limiting mechanism to seal against the inner wall of the pen refill tube in the ballpoint pen ink filling device, the problem of low filling accuracy was solved, and the consistency of ink volume in each pen refill tube and the yield rate were improved.
Patent Information
- Application Number
- CN202423216994.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing ballpoint pen refill filling devices suffer from low filling accuracy, resulting in inconsistent ink levels in each refill and affecting the yield rate.
A limiting mechanism is inserted into and sealed to the inner wall of the pen refill tube. By controlling the contact position between the limiting mechanism and the pen refill tube, the amount of ink filled in each pen refill tube is consistent. Precise filling is achieved by using a conveyor table and an ink filling mechanism.
It improves the yield rate of ballpoint pen ink filling, ensures the consistency of ink volume in each pen refill tube, and enhances the accuracy and automation of filling.
Smart Images
Figure CN223618487U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pen manufacturing, specifically to a precision filling device for ballpoint pen ink. Background Technology
[0002] Gel pens are widely popular due to their smooth writing experience and portability. In the production process of gel pens, ink filling is a crucial step, directly affecting the writing quality and lifespan of the pen. Existing gel pen refill filling devices typically use a needle-shaped ink nozzle inserted into the refill to pump a certain amount of ink into the refill tube. This filling method is affected by the precision of the infusion pump, resulting in inconsistent filling accuracy and failing to ensure a consistent ink volume in each refill, thus impacting the refill yield. Utility Model Content
[0003] The purpose of this utility model is to provide a precision filling device for ballpoint pen ink. This device is inserted into and sealed to the inner wall of the pen refill tube by a limiting mechanism, so that when the ink reaches the position where the limiting mechanism and the pen refill tube are attached, no more ink can be filled, thereby ensuring that the amount of ink filled in each pen refill tube is consistent.
[0004] The technical solution adopted by this utility model to solve the above problems is:
[0005] A precision ink filling device for ballpoint pens includes a conveyor table and an ink filling mechanism. The conveyor table is provided with a carrier mechanism for placing a plurality of pen refill tubes and the conveyor table drives the carrier mechanism to move to the right. The ink filling mechanism is located on the moving path of the carrier mechanism and is used to fill ink into the pen refill tubes. The conveyor table is provided with a limiting mechanism that is inserted into and sealed against the inner wall of the pen refill tube.
[0006] In the above technical solution, preferably, the loading mechanism includes a base and a support block. The base is placed on the conveying platform, the support block is fixed above the base by several support rods, several pen refill tubes are vertically inserted into the support block and the base, and the limiting mechanism is set on the base.
[0007] In the above technical solution, preferably, the limiting mechanism includes a rubber tube and a rod. The rubber tube has a hollow structure with an open lower end. The lower end of the rubber tube is fixed to the base. The upper end of the rubber tube is provided with a horizontally outward protruding ring. The diameter of the ring is smaller than the inner diameter of the pen refill tube. The rod is slidably inserted into the rubber tube from the lower opening. The diameter of the rod is larger than the inner diameter of the rubber tube. When the top of the rod is located in the middle position of the ring, the ring abuts against the inner wall of the pen refill tube.
[0008] In the above technical solution, preferably, the conveyor platform is provided with a lifting mechanism for lifting the load mechanism. The lifting mechanism includes a fixed frame and a movable frame. The fixed frame is fixed to the bottom end of the conveyor platform, and the movable frame is driven by a screw motor to slide up and down on the fixed frame. The upper end of the movable frame abuts against the lower side of the base.
[0009] In the above technical solution, preferably, a sliding block is slidably arranged on the lower side of the base, the insertion rod passes through the base and the lower end of the insertion rod is fixed on the sliding block, and a number of elastic pieces are arranged between the sliding block and the base to drive the sliding block to separate from the base.
[0010] In the above technical solution, preferably, the bottom end of the base is provided with a plurality of bottom pads, the bottom pads are slidably disposed on the base, and a spring is provided between the bottom pads and the base, the upper and lower ends of the springs being fixedly connected to the base and the bottom pads respectively.
[0011] In the above technical solution, preferably, the ink filling mechanism includes an ink tank and an ink outlet head. The ink tank and the ink outlet head are connected by a pipe. The number of ink outlet heads is the same as the number of pen refill tubes in the carrying mechanism, and the upper openings of the ink outlet heads and pen refill tubes correspond one-to-one.
[0012] In the above technical solution, preferably, the ink filling mechanism is provided with a baffle, the ink outlet head and the pipe slide through the baffle and the ink outlet head is located at the lower end of the baffle, the ink outlet head and the pipe do not contact the baffle, and the baffle is connected to the ink filling mechanism by a number of automatically extendable telescopic rods.
[0013] In the above technical solution, preferably, the lower side of the baffle is provided with a plurality of rubber rings, and the ink outlet head is located inside the rubber rings.
[0014] Compared with the prior art, this utility model has the following advantages and effects:
[0015] This invention places the pen refill tube into a carrier mechanism and moves the carrier mechanism to the position of the ink filling mechanism via a conveyor. The ink filling mechanism fills the pen refill tube with ink. Simultaneously, a limiting mechanism set in the carrier mechanism is inserted into and sealed against the inner wall of the pen refill tube. This prevents further ink filling when the ink reaches the contact position between the limiting mechanism and the pen refill tube. By controlling the contact position between the limiting mechanism and the inner wall of each pen refill tube to be consistent, the amount of ink filled in each pen refill tube is kept consistent, thus improving the yield rate of pen refill ink filling. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the ballpoint pen ink precision filling device in the embodiments of this utility model.
[0017] Figure 2 yes Figure 1 Partial sectional view.
[0018] Figure 3 yes Figure 2 Enlarged view of the cargo-carrying mechanism.
[0019] Figure 4 yes Figure 3 Enlarged view of the middle limit mechanism.
[0020] Figure 5 yes Figure 2 Enlarged view of the lifting mechanism.
[0021] Figure 6 yes Figure 3 A magnified view of the central ink output point.
[0022] The components include: conveyor 1, ink filling mechanism 2, ink tank 21, ink outlet 22, pipe 23, baffle 24, telescopic rod 25, rubber ring 26, pen refill tube 3, carrying mechanism 4, base 41, support block 42, support rod 43, sliding block 44, elastic sheet 45, bottom pad 46, spring 47, limiting mechanism 5, rubber tube 51, insertion rod 52, ring 53, lifting mechanism 6, fixed frame 61, movable frame 62, and screw motor 63. Detailed Implementation
[0023] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0024] See Figures 1-6 This embodiment provides a precision filling device for ballpoint pen ink, including a conveyor platform 1 and an ink filling mechanism 2. The conveyor platform 1 is provided with a carrying mechanism 4 for placing the pen refill tube 3, and the conveyor platform 1 drives the carrying mechanism 4 to move to the right. The ink filling mechanism 2 is located on the moving path of the carrying mechanism 4 and is used to fill ink into the pen refill tube 3. The conveyor platform 1 is provided with a limiting mechanism 5 that is inserted into and sealed against the inner wall of the pen refill tube 3.
[0025] This invention places the pen refill tube 3 into the carrying mechanism 4 and moves the carrying mechanism 4 to the position of the ink filling mechanism 2 via the conveying table 1. The ink filling mechanism 2 fills the pen refill tube 3 with ink. At the same time, the limiting mechanism 5 set in the carrying mechanism 4 is inserted and sealed against the inner wall of the pen refill tube 3, so that when the ink reaches the contact position between the limiting mechanism 5 and the pen refill tube 3, no more ink can be poured in. By controlling the contact position between the limiting mechanism 5 and the inner wall of each pen refill tube 3 to be consistent, the amount of ink filled in each pen refill tube 3 is consistent, thereby improving the yield rate of pen refill ink filling.
[0026] See Figure 3The loading mechanism 4 includes a base 41 and a support block 42. The base 41 is placed on the conveyor table 1. The support block 42 is fixed above the base 41 by several support rods 43. Several pen refill tubes 3 are vertically inserted into the support block 42 and the base 41. The limiting mechanism 5 is set on the base 41.
[0027] The pen refill tube 3 can be placed vertically by means of the support block 42 and the base 41. The pen refill tube 3 passes through the support block 42 from above and is inserted into the base 41 at its lower end. The ink filling mechanism 2 is located above the carrier mechanism 4 and is aligned with the upper opening of the pen refill tube 3 to fill it with ink. The limiting mechanism 5 is positioned between the base 41 and the support block 42 against the inner wall of the pen refill tube 3. When the pen refill tube 3 is made of transparent material, it is convenient to automatically monitor the amount of ink in the pen refill tube 3 through automatic photographic monitoring or infrared sensor monitoring, so that the staff can be promptly alerted to repair if the ink filling mechanism 2 or the limiting mechanism 5 malfunctions.
[0028] See Figure 3 , Figure 4 The limiting mechanism 5 includes a rubber tube 51 and a rod 52. The rubber tube 51 has a hollow structure with an open lower end. The lower end of the rubber tube 51 is fixed on the base 41. The upper end of the rubber tube 51 is provided with a horizontally protruding ring 53. The diameter of the ring 53 is smaller than the inner diameter of the pen refill tube 3. The rod 52 is slidably inserted into the rubber tube 51 from the lower end opening. The diameter of the rod 52 is larger than the inner diameter of the rubber tube 51. When the top of the rod 52 is located in the middle position of the ring 53, the ring 53 abuts against the inner wall of the pen refill tube 3.
[0029] When the insert rod 52 is inserted upwards into the rubber tube 51, its large diameter causes the tube to deform outwards. When the insert rod 52 is in the middle of the ring 53, the ring deforms to a larger diameter, causing its outer side to press against the inner wall of the pen refill tube 3, thus preventing further ink filling once the ring reaches that position. This allows the limiting mechanism 5 to precisely control the ink volume. When the insert rod 52 moves downwards and is pulled out of the rubber tube 51, the tube returns to its original shape due to its elasticity, separating the ring 53 from the inner wall of the pen refill tube 3. This facilitates the upward movement of the filled pen refill tube 3 from the rubber tube 51, while also reducing ink contamination on the inner wall of the pen refill tube 3.
[0030] See Figure 2 , Figure 5The conveyor table 1 is provided with a lifting mechanism 6 for lifting the load mechanism 4. The lifting mechanism 6 includes a fixed frame 61 and a movable frame 62. The fixed frame 61 is fixed to the bottom end of the conveyor table 1. The movable frame 62 is driven by a screw motor 63 to slide up and down on the fixed frame 61. The upper end of the movable frame 62 abuts against the lower side of the base 41.
[0031] When the carrying mechanism 4 moves to the bottom of the ink filling mechanism 2 via the conveyor table 1, the screw motor 63 is activated to move the movable frame 62 upward, which in turn drives the carrying mechanism 4 upward, so that the carrying mechanism 4 and the ink filling mechanism 2 can fit together to facilitate the ink filling operation.
[0032] See Figure 3 The base 41 has a sliding block 44 that slides up and down on its lower side. The insertion rod 52 passes through the base 41 and its lower end is fixed on the sliding block 44. A plurality of elastic pieces 45 are provided between the sliding block 44 and the base 41 to drive the sliding block 44 and the base 41 to separate.
[0033] When the carrying mechanism 4 is engaged with the ink filling mechanism 2 under the action of the lifting mechanism 6, the lead screw motor 63 continues to rotate, causing the movable frame 62 to continue to move upward, pushing the sliding block 44 upward and compressing the elastic plate 45. As a result, the insertion rod 52, which is fixed to the sliding block 44, also moves upward and inserts into the rubber tube 51, achieving a seal between the rubber tube 51 and the inner wall of the pen refill tube 3. After ink filling is completed, the lead screw motor 63 reverses, causing the movable frame 62 to move downward, separating the carrying mechanism 4 from the ink filling mechanism 2. At the same time, under the action of the elastic plate 45, the sliding block 44 and the base 41 are driven to separate, thereby pulling the insertion rod 52 out of the rubber tube 51. The upper end of the insertion rod 52 is removed from the ring 53, and the ring 53 returns to its original position, separating from the inner wall of the pen refill tube 3, making it easier to remove the pen refill tube 3 from the rubber tube 51 and improving the automation level of this utility model.
[0034] See Figure 3 The base 41 has several bottom pads 46 at its bottom end. The bottom pads 46 are slidably mounted on the base 41. A spring 47 is provided between the bottom pads 46 and the base 41. The upper and lower ends of the spring 47 are fixedly connected to the base 41 and the bottom pads 46, respectively.
[0035] When the movable frame 62 pushes the sliding block 44 upward under the action of the lead screw motor 63, the bottom pad 46 moves upward relative to the base 41, and the spring 47 is compressed. When the sliding block 44 moves downward, the bottom pad 46 moves downward relative to the base 41 under the action of the spring 47, so that the lower end of the bottom pad 46 and the lower end of the sliding block 44 are on the same horizontal plane. The bottom pad 46 supports the loading mechanism 4 and improves the stability of the loading mechanism 4.
[0036] See Figure 2 , Figure 3, Figure 6 The ink filling mechanism 2 includes an ink tank 21 and an ink outlet head 22. The ink tank 21 and the ink outlet head 22 are connected by a pipe 23. The number of ink outlet heads 22 is the same as the number of pen refill tubes 3 in the carrying mechanism 4, and the upper openings of the ink outlet heads 22 and the pen refill tubes 3 correspond one-to-one.
[0037] The ink tank 21 is used to store a certain amount of ink for refilling. When the carrying mechanism 4 is in contact with the ink filling mechanism 2 under the action of the lifting mechanism 6, the ink outlet 22 can correspond one-to-one with the pen refill tube 3 to fill the pen refill tube 3 with ink, realize the simultaneous filling of multiple pen refill tubes 3, and improve the ink filling efficiency of this utility model.
[0038] See Figure 2 , Figure 3 The ink filling mechanism 2 is provided with a baffle 24. The ink outlet head 22 and the pipe 23 slide through the baffle 24 and the ink outlet head 22 is located at the lower end of the baffle 24. The ink outlet head 22 and the pipe 23 do not contact the baffle 24. The baffle 24 is connected to the ink filling mechanism 2 by several automatically extendable telescopic rods 25 (e.g., spring telescopic rods, hydraulic telescopic rods).
[0039] After the lifting mechanism 6 drives the carrying mechanism 4 upward to make the upper end of the support block 42 fit with the lower end of the baffle 24, the lifting mechanism 6 can continue to drive the support block 42 upward, thereby driving the baffle 24 upward. The telescopic rod 25 shortens. At this time, since the ink outlet head 22 and the pipe 23 are not in contact with the baffle 24, the position of the ink outlet head 22 remains unchanged. However, the pen refill tube 3 moves upward under the action of the carrying mechanism 4, so that the ink outlet head 22 can be partially inserted into the upper opening of the pen refill tube 3, thereby achieving precise positioning of the ink outlet head 22 and the pen refill tube 3, ensuring that the ink outlet head 22 can fill the pen refill tube 3 with ink. The automatically extendable telescopic rod 25 can ensure that the support block 42 and the baffle 24 always remain in contact.
[0040] See Figure 6 The lower side of the baffle 24 is provided with several rubber rings 26, and the ink outlet head 22 is located inside the rubber rings 26.
[0041] When the support block 42 is attached to the bottom of the baffle 24 and the ink outlet 22 is partially inserted into the pen refill tube 3, the rubber ring 26 can play a sealing role, reducing the risk of ink leakage from the gap between the support block 42 and the baffle 24.
[0042] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.
Claims
1. A precision filling device for ballpoint pen ink, characterized in that: It includes a conveyor platform and an ink filling mechanism. The conveyor platform is equipped with a carrier mechanism for placing a number of pen refill tubes and the conveyor platform drives the carrier mechanism to move to the right. The ink filling mechanism is located on the moving path of the carrier mechanism and is used to fill ink into the pen refill tubes. The conveyor platform is equipped with a limiting mechanism that is inserted into and sealed against the inner wall of the pen refill tube.
2. The precision filling device for ballpoint pen ink according to claim 1, characterized in that: The loading mechanism includes a base and a support block. The base is placed on a conveyor platform, and the support block is fixed above the base by several support rods. Several pen refill tubes are vertically inserted into the support block and the base. The limiting mechanism is set on the base.
3. The precision filling device for ballpoint pen ink according to claim 1, characterized in that: The limiting mechanism includes a rubber tube and a rod. The rubber tube has a hollow structure with an open bottom end. The lower end of the rubber tube is fixed to the base. The upper end of the rubber tube has a horizontally protruding ring with a diameter smaller than the inner diameter of the pen refill tube. The rod is slidably inserted into the rubber tube from the lower opening. The diameter of the rod is larger than the inner diameter of the rubber tube. When the top of the rod is in the middle position of the ring, the ring abuts against the inner wall of the pen refill tube.
4. The precision filling device for ballpoint pen ink according to claim 1, characterized in that: The conveyor platform is equipped with a lifting mechanism for lifting the load mechanism. The lifting mechanism includes a fixed frame and a movable frame. The fixed frame is fixed to the bottom end of the conveyor platform, and the movable frame is driven by a screw motor to slide up and down on the fixed frame. The upper end of the movable frame abuts against the lower side of the base.
5. The precision filling device for ballpoint pen ink according to claim 2, characterized in that: The base has a sliding block that slides up and down on its lower side. The insertion rod passes through the base and its lower end is fixed to the sliding block. Several elastic pieces are provided between the sliding block and the base to drive the sliding block to separate from the base.
6. The precision filling device for ballpoint pen ink according to claim 2, characterized in that: The base has several pads at its bottom end, which slide up and down on the base. A spring is provided between the pads and the base, and the upper and lower ends of the spring are fixedly connected to the base and the pads, respectively.
7. The precision filling device for ballpoint pen ink according to claim 1, characterized in that: The ink filling mechanism includes an ink tank and an ink outlet head. The ink tank and the ink outlet head are connected by a pipe. The number of ink outlet heads is the same as the number of pen refill tubes in the carrying mechanism, and the upper openings of the ink outlet heads and pen refill tubes correspond one-to-one.
8. The precision filling device for ballpoint pen ink according to claim 1, characterized in that: The ink filling mechanism is equipped with a baffle, through which the ink outlet head and the pipe slide, with the ink outlet head located at the lower end of the baffle. The ink outlet head and the pipe do not contact the baffle. The baffle is connected to the ink filling mechanism by several automatically extendable telescopic rods.
9. The precision filling device for ballpoint pen ink according to claim 8, characterized in that: The lower side of the baffle is provided with several rubber rings, and the ink outlet head is located inside the rubber rings.