Filling and sealing equipment for ballpoint pen refill ink

Abstract

The utility model discloses a ball pen refill ink filling and sealing equipment, including conveyer, filling mechanism and negative pressure mechanism, and the refill is placed on the conveyer with equal interval, and filling mechanism and negative pressure mechanism are located conveyer's left and right sides respectively, and filling mechanism is aligned with the left end opening of refill and imports silicone oil and ink to the refill, and negative pressure mechanism is aligned with the right end opening of refill and forms negative pressure in the refill. The utility model discloses through negative pressure mechanism work in the refill and form negative pressure again through filling mechanism from the left end opening of refill to the refill and fill silicone oil and ink, and negative pressure environment makes the bubble in the ink can expand and break quickly, realizes the purpose of eliminating the bubble in the ink.

Description

Technical Field

[0001] This utility model relates to the field of ballpoint pen manufacturing, specifically to a ballpoint pen ink filling and sealing device. Background Technology

[0002] In the production process of ballpoint pen refills, ink needs to be filled into the refill, and silicone oil needs to be injected on top of the ink to seal it and prevent backflow and evaporation. However, air can easily get mixed into the ink during the filling process, creating bubbles. These bubbles not only affect the normal flow of the ink, causing uneven writing, but can also affect the quality and lifespan of the ballpoint pen. To eliminate these bubbles, the refill is usually centrifuged. Centrifugation requires specialized equipment, which increases production costs, extends the production cycle, and reduces production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a ballpoint pen refill ink filling and sealing device. The device uses a negative pressure mechanism to create negative pressure inside the pen refill, and then uses a filling mechanism to fill silicone oil and ink into the pen refill from the left end opening. The negative pressure environment allows the air bubbles in the ink to expand and burst quickly, thereby eliminating the air bubbles in the ink.

[0004] The technical solution adopted by this utility model to solve the above problems is:

[0005] A ballpoint pen refill ink filling and sealing device includes a conveyor, a filling mechanism, and a negative pressure mechanism. The pen refills are placed on the conveyor at equal intervals. The filling mechanism and the negative pressure mechanism are located on the left and right sides of the conveyor, respectively. The filling mechanism is aligned with the left end opening of the pen refill and feeds silicone oil and ink into the pen refill. The negative pressure mechanism is aligned with the right end opening of the pen refill and forms a negative pressure inside the pen refill.

[0006] In the above technical solution, preferably, the filling mechanism includes an ink filling head and an electric cylinder. The electric cylinder drives the ink filling head to move left and right. The ink filling head is provided with a first channel for conveying ink and a second channel for conveying silicone oil. The right end opening of the first channel and the right end opening of the second channel are both located at the right end of the ink filling head.

[0007] In the above technical solution, preferably, the ink filling head includes a sleeve and a slide rod. The first channel is located inside the slide rod, and the gap between the sleeve and the slide rod forms a second channel. The sleeve is provided with an ink filling port and an oil filling port. The ink filling port is connected to the first channel through a through hole on the slide rod, and the oil filling port is connected to the second channel. The slide rod is provided with an annular stop block that abuts against the oil filling port.

[0008] In the above technical solution, preferably, the right end of the sleeve is provided with an annular limiting plate, and a spring is provided between the slide rod and the sleeve to drive them to separate.

[0009] In the above technical solution, preferably, a rubber ring is fixed to the right end of the sleeve, and the minimum inner diameter of the rubber ring is smaller than the outer diameter of the slide rod.

[0010] In the above technical solution, preferably, the negative pressure mechanism includes a negative pressure fan and multiple connecting pipes, and the filling mechanism includes multiple ink filling heads, the same number as the connecting pipes.

[0011] In the above technical solution, preferably, the conveyor includes a chain conveyor belt and a motor, the motor drives the chain conveyor belt to rotate, and each chain plate of the chain conveyor belt is provided with a placement groove with a V-shaped cross section.

[0012] Compared with the prior art, this utility model has the following advantages and effects:

[0013] This invention uses a conveyor to move the pen refill sequentially between the filling mechanism and the negative pressure mechanism. The filling mechanism and the negative pressure mechanism press against both ends of the pen refill to seal them. Then, the negative pressure mechanism works inside the pen refill to create negative pressure. The filling mechanism then fills the pen refill with silicone oil and ink through the opening at the left end. Due to the negative pressure environment inside the pen refill, air bubbles in the ink can expand and burst quickly, thus eliminating the air bubbles. Therefore, the ink filling and sealing steps and the air bubble elimination steps can be completed simultaneously, improving the production efficiency of the pen refill. Furthermore, it eliminates the need for a separate centrifuge, thereby reducing production costs. Attached Figure Description

[0014] Figure 1 This is a top view of the ballpoint pen ink filling and sealing equipment according to an embodiment of this utility model.

[0015] Figure 2 yes Figure 1 Front view of the filling mechanism.

[0016] Figure 3 yes Figure 2 A sectional view.

[0017] Figure 4 yes Figure 3 A schematic diagram of the ink filling operation.

[0018] Among them, there are conveyor 1, chain conveyor belt 11, motor 12, placement trough 13, filling mechanism 2, ink filling head 21, electric cylinder 22, first channel 23, second channel 24, sleeve 25, slide bar 26, ink inlet 27, oil inlet 28, through hole 29, stop block 30, limit plate 31, spring 32, rubber ring 33, negative pressure mechanism 4, negative pressure fan 41, connecting pipe 42, and pen refill 5. Detailed Implementation

[0019] 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.

[0020] See Figures 1-4 This embodiment discloses a ballpoint pen refill ink filling and sealing device, including a conveyor 1, a filling mechanism 2, and a negative pressure mechanism 4. The pen refills 5 are placed on the conveyor 1 at equal intervals. The filling mechanism 2 and the negative pressure mechanism 4 are located on the left and right sides of the conveyor 1, respectively. The filling mechanism 2 is aligned with the left end opening of the pen refill 5 and inputs silicone oil and ink into the pen refill 5. The negative pressure mechanism 4 is aligned with the right end opening of the pen refill 5 and forms a negative pressure inside the pen refill 5.

[0021] This invention uses a conveyor 1 to move the pen refill 5 sequentially between the filling mechanism 2 and the negative pressure mechanism 4. The filling mechanism 2 and the negative pressure mechanism 4 press against both ends of the pen refill 5 to seal both ends. Then, the negative pressure mechanism 4 works inside the pen refill 5 to create negative pressure. Silicone oil and ink are then injected into the pen refill 5 through the filling mechanism 2 from the left end opening. Due to the negative pressure environment inside the pen refill 5, the air bubbles in the ink can expand and burst quickly, thus eliminating the air bubbles in the ink. Therefore, the ink filling and sealing steps and the air bubble elimination steps of the pen refill 5 can be completed simultaneously, improving the production efficiency of the pen refill 5. Furthermore, it eliminates the need for a separate centrifugal device, thereby reducing production costs.

[0022] See Figures 1-3 The filling mechanism 2 includes an ink filling head 21 and an electric cylinder 22. The electric cylinder 22 drives the ink filling head 21 to move left and right. The ink filling head 21 is provided with a first channel 23 for conveying ink and a second channel 24 for conveying silicone oil. The right end opening of the first channel 23 and the right end opening of the second channel 24 are both located at the right end of the ink filling head 21.

[0023] The electric cylinder 22 drives the ink filling head 21 to move to the right, allowing its right end to be inserted into the left opening of the pen refill 5. Silicone oil is first output through the second channel 24, then ink is output through the first channel 23. The ink pushes the silicone oil to the right, ensuring it remains on the right side of the ink for a sealing effect. Finally, the electric cylinder 22 drives the ink filling head 21 to return to its original position. This method, using the electric cylinder 22 to drive the ink filling head 21 back and forth to complete both ink filling and sealing, reduces the complexity of the equipment. Compared to existing technologies that use two separate stations for ink filling and sealing, this invention reduces the size of the equipment, facilitating space allocation within the workshop.

[0024] See Figure 3 , Figure 4The ink filling head 21 includes a sleeve 25 and a slide rod 26. The first channel 23 is located inside the slide rod 26. The gap between the sleeve 25 and the slide rod 26 forms a second channel 24. The sleeve 25 is provided with an ink filling port 27 and an oil filling port 28. The ink filling port 27 is connected to the first channel 23 through a through hole 29 on the slide rod 26. The oil filling port 28 is connected to the second channel 24. The slide rod 26 is provided with an annular stop block 30 that abuts against the oil filling port 28.

[0025] When the sleeve 25 and the slide bar 26 are in their initial positions, the ink inlet 27 and the first channel 23 are misaligned and not connected, while the ink inlet 28 is connected to the second channel 24. This allows a certain amount of silicone oil to be injected into the pen refill 5 via the ink inlet 28, preventing ink from mixing with the silicone oil during ink injection. Then, the slide bar 26 is driven to move to the right relative to the sleeve 25, causing the ink inlet 27 to connect with the first channel 23 through the through hole 29. At this time, the stop block 30 is located inside the ink inlet 28, thus sealing it and preventing silicone oil from mixing with the ink during ink injection. A certain amount of ink is then injected into the pen refill 5 via the ink inlet 27. Therefore, this invention achieves the sequential injection of silicone oil and ink into the pen refill 5 through the simple reciprocating action of the slide bar 26 within the sleeve 25. Furthermore, it isolates the ink and silicone oil during ink injection, reducing the probability of ink and silicone oil mixing and ensuring the normal writing performance of the pen refill 5.

[0026] See Figure 3 , Figure 4 The right end of the sleeve 25 is provided with an annular limiting plate 31, and a spring 32 is provided between the slide rod 26 and the sleeve 25 to drive them to separate.

[0027] When the electric cylinder 22 drives the ink filling head 21 to move to the right, the right end of the ink filling head 21 is inserted into the pen refill 5, and the limiting plate 31 abuts against the pen refill 5 to prevent the ink filling head 21 from being inserted further. At this time, the electric cylinder 22 stops working and performs the ink filling operation (e.g. Figure 3 (As shown in the diagram). After ink injection is completed, the electric cylinder 22 continues to work, driving the slide rod 26 to be fully inserted into the sleeve 25. At this time, the ink injection port 27 is connected to the first channel 23, and the spring 32 is compressed, thereby performing the ink injection operation (as shown in the diagram). Figure 4 (As shown in the diagram). After ink filling is completed, the electric cylinder 22 drives the ink filling head 21 to move to the left to reset. The sleeve 25 and the slide bar 26 also automatically reset under the action of the spring 32, which facilitates the subsequent repeated ink filling and ink filling operations and improves the continuity of repeated operations of this equipment.

[0028] See Figure 3 , Figure 4 A rubber ring 33 is fixed to the right end of the sleeve 25, and the minimum inner diameter of the rubber ring 33 is smaller than the outer diameter of the slide rod 26.

[0029] When the slide bar 26 moves to the right relative to the sleeve 25 and extends from the right end of the sleeve 25, the slide bar 26 can open the rubber ring 33 so that the inner and outer sides of the rubber ring 33 abut against the outer side of the slide bar 26 and the inner wall of the pen refill 5 respectively to achieve a seal, reducing the risk of silicone oil flowing out of the second channel 24 and ink flowing back into the second channel 24 during the ink filling operation.

[0030] See Figure 1 The negative pressure mechanism 4 includes a negative pressure fan 41 and multiple connecting pipes 42, and the filling mechanism 2 includes multiple ink filling heads 21, which are the same number as the connecting pipes 42.

[0031] The negative pressure fan 41 creates negative pressure within all connecting pipes 42. When the right end of the pen refill 5 rests against the connecting pipe 42, the ink filling head 21 rests against the left end of the pen refill 5. Furthermore, the rubber ring 33 provides a seal during ink filling. This creates negative pressure within the pen refill 5, allowing multiple connecting pipes 42 and ink filling heads 21 to work in tandem to simultaneously fill multiple pen refills 5 with ink, thus improving the ink filling efficiency of the device. An elastic sealing ring can be installed at the left end of the connecting pipe 42 to improve airtightness when the pen refill 5 rests against the connecting pipe 42.

[0032] See Figure 1 The conveyor 1 includes a chain conveyor belt 11 and a motor 12. The motor 12 drives the chain conveyor belt 11 to rotate. Each chain plate of the chain conveyor belt 11 is provided with a placement groove 13 with a V-shaped cross section.

[0033] The motor 12 drives the chain conveyor belt 11 to rotate, thereby achieving continuous conveying of the pen refill 5. The placement groove 13 serves to receive and limit the pen refill 5, so that the pen refill 5 can move precisely between each ink filling head 21 and connecting tube 42, ensuring that the ink filling head 21 and connecting tube 42 can accurately connect with the left and right ends of the pen refill 5.

[0034] 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 ballpoint pen refill ink filling and sealing device, characterized in that: The device includes a conveyor, a filling mechanism, and a negative pressure mechanism. The pen refills are placed at equal intervals on the conveyor. The filling mechanism and the negative pressure mechanism are located on the left and right sides of the conveyor, respectively. The filling mechanism is aligned with the left end opening of the pen refill and injects silicone oil and ink into the pen refill. The negative pressure mechanism is aligned with the right end opening of the pen refill and forms a negative pressure inside the pen refill.

2. The ballpoint pen refill ink filling and sealing equipment according to claim 1, characterized in that: The filling mechanism includes an ink filling head and an electric cylinder. The electric cylinder drives the ink filling head to move left and right. The ink filling head is provided with a first channel for conveying ink and a second channel for conveying silicone oil. The right end opening of the first channel and the right end opening of the second channel are both located at the right end of the ink filling head.

3. The ballpoint pen refill ink filling and sealing equipment according to claim 2, characterized in that: The ink filling head includes a sleeve and a slide rod. The first channel is located inside the slide rod, and the gap between the sleeve and the slide rod forms a second channel. The sleeve has an ink filling port and an oil filling port. The ink filling port is connected to the first channel through a through hole on the slide rod, and the oil filling port is connected to the second channel. The slide rod is provided with an annular stop block that abuts against the oil filling port.

4. The ballpoint pen refill ink filling and sealing equipment according to claim 3, characterized in that: The right end of the sleeve is provided with an annular limiting plate, and a spring is provided between the slide rod and the sleeve to drive them to separate.

5. The ballpoint pen refill ink filling and sealing equipment according to claim 3, characterized in that: A rubber ring is fixed to the right end of the sleeve, and the minimum inner diameter of the rubber ring is smaller than the outer diameter of the slide rod.

6. The ballpoint pen refill ink filling and sealing equipment according to claim 1, characterized in that: The negative pressure mechanism includes a negative pressure fan and multiple connecting pipes, and the filling mechanism includes multiple ink filling heads, the same number as the connecting pipes.

7. The ballpoint pen refill ink filling and sealing equipment according to claim 1, characterized in that: The conveyor includes a chain conveyor belt and a motor. The motor drives the chain conveyor belt to rotate. Each chain plate of the chain conveyor belt is provided with a placement groove with a V-shaped cross section.

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