Leakage-proof oil injection equipment

Abstract

The utility model relates to the field of tobacco tar injection equipment, in particular to leakage-proof oil injection equipment which comprises a needle head body and a connecting piece, the needle head body is communicated with a plurality of oil injection needles, one end of the connecting piece is connected with the needle head body, and the other end of the connecting piece is connected with a sealing plug. The plane where the bottom of the sealing plug is located is lower than the plane where the tail ends of needle heads of all the oil injection needles are located. The outer diameter of the sealing plug is larger than or equal to the diameter of the heating wire assembly hole. The sealing plug is arranged, the position of the sealing plug is lower than the positions of the tail ends of the needle heads of all the oil injection needles, and meanwhile it is ensured that the outer diameter of the sealing plug is larger than or equal to the hole diameter of the heating wire assembly hole, so that the heating wire assembly hole is effectively plugged, and oil liquid is prevented from leaking from the hole. By means of the design, the problem that oil liquid is prone to leakage when the heating core is not installed in a traditional oil injection mode is fundamentally solved.

Description

A leak-proof oil injection device Technical Field

[0001] This utility model relates to the field of e-liquid filling equipment, and more particularly to a leak-proof filling equipment. Background Technology

[0002] In traditional oil cup filling processes, the heating element is usually inserted into the assembly hole of the integrated cotton in the oil cup before oil is added. This method effectively prevents oil leakage from the assembly hole. However, under certain structural or process requirements, the heating element is not inserted into the oil cup before oil filling. In this case, if the traditional oil filling method is followed, oil can easily leak from the assembly hole of the integrated cotton and the assembly hole of the oil cup shell. Such leakage is unacceptable because it affects the quality and performance of the product.

[0003] To prevent leakage, current production methods mostly employ drip injection. This method requires funnels with columns and placement fixtures, making it cumbersome and inefficient. Furthermore, to meet the injection needs of oil cups of different sizes, a large number of funnels and fixtures need to be manufactured, increasing production and time costs. Therefore, there is an urgent need for a new type of oil injection equipment to solve these problems. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a leak-proof oil injection device. By installing a sealing plug with its bottom positioned below the tips of all the injection needles, and ensuring that the outer diameter of the sealing plug is greater than or equal to the diameter of the heating wire assembly hole, the heating wire assembly hole is effectively blocked, preventing oil leakage. This design fundamentally solves the problem of easy oil leakage in traditional oil injection methods when the heating element is not installed.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a leak-proof oil injection device, comprising a needle body and a connector, wherein the needle body is connected to a plurality of oil injection needles, and one end of the connector is connected to the needle body, and the other end of the connector is connected to a sealing plug; the bottom plane of the sealing plug is lower than the plane of the ends of all the oil injection needles; the outer diameter of the sealing plug is greater than or equal to the diameter of the heating wire assembly hole.

[0006] Furthermore, the number of connectors can be single or multiple.

[0007] Furthermore, the needle body has an internal oil injection channel for connecting each oil injection needle, and the needle body also has an oil injection connector that communicates with the oil injection channel.

[0008] Furthermore, the connector is a flexible connector, and the flexible connector is a spring or soft rubber.

[0009] Furthermore, it also includes a floating pressure plate and a guide rod. The surface of the floating pressure plate is provided with a first clearance hole for the oil injection needle to pass through and a second clearance hole for the sealing plug and the flexible connector to pass through. The guide rod passes through the needle body and the floating pressure plate respectively, and a return spring is sleeved on the guide rod.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. The oil injection device of this utility model effectively blocks the heating wire assembly hole and prevents oil leakage by setting a sealing plug with its bottom positioned lower than the ends of all oil injection needles, while ensuring that the outer diameter of the sealing plug is greater than or equal to the diameter of the heating wire assembly hole. This design fundamentally solves the problem of oil leakage in traditional oil injection methods when the heating element is not installed.

[0012] 2. Compared to traditional drip-feeding methods, the oil injection device of this invention eliminates the need for funnels and excessive fixtures, making the oil injection process simpler and faster. At the same time, the number and arrangement of the injection needles have been optimized, allowing the oil to be injected more evenly into the integrated cotton, further improving oil injection efficiency.

[0013] 3. By eliminating the need for manufacturing and using funnels and fixtures, the oil injection equipment of this invention can significantly reduce material and labor costs during production. Furthermore, the equipment has good versatility and practicality, adapting to the oil injection needs of oil cups of different specifications and precision, thereby reducing the frequency of equipment updates and modifications, and further lowering production costs. Attached Figure Description

[0014] Figure 1 is a three-dimensional structural diagram of the leak-proof oil injection equipment.

[0015] Figure 2 is a schematic cross-sectional view of the anti-leakage oil injection equipment before oil injection.

[0016] Figure 3 is a schematic cross-sectional view of the oil injection process in the leak-proof oil injection equipment.

[0017] Figure 4 is a schematic diagram of the structure of the leak-proof oil injection equipment and related equipment after assembly.

[0018] Explanation of reference numerals in the attached drawings: 11. Pipe connector; 12. Needle body; 13. Oil injection needle; 14. Flexible connector; 15. Sealing plug; 2. Floating pressure plate; 21. First clearance hole; 22. Second clearance hole; 31. Oil cup shell; 32. Integrated cotton; 33. Heating wire assembly hole; 4. Drive device; 5. Guide rod; 51. Return spring. Detailed Implementation

[0019] Please refer to Figures 1-4. This utility model relates to a leak-proof oil injection device, including a needle body 12 and a flexible connector 14. The needle body 12 is provided with and connected to a plurality of oil injection needles 13. One end of the flexible connector 14 is connected to the needle body 12, and the other end is connected to a sealing plug 15. At the same time, the sealing plug 15 is located below the position of the ends of all the oil injection needles 13. The outer diameter of the sealing plug 15 is greater than or equal to the diameter of the heating wire assembly hole 33.

[0020] In the traditional e-liquid filling process, the e-liquid is injected into the integrated cotton 32 through the filling hole and then seeps outwards. However, without a proper structure to prevent the e-liquid from leaking out of the heating wire mounting hole 33, the e-liquid may seep into that hole and continue to flow downwards, eventually causing leakage from the bottom of the e-liquid cup.

[0021] To address this problem, this invention proposes a novel leak-proof oil injection device, comprising a needle body 12, a flexible connector 14, and several oil injection needles 13. Importantly, the device also includes a sealing plug 15, the bottom of which is located below all the oil injection needles 13 and fitted into the heating wire assembly hole 33. When oil is injected into the integrated cotton 32 through the oil injection needles 13, even if some oil seeps into the heating wire assembly hole 33 and continues to flow downwards, it will be blocked by the sealing plug 15 (because the bottom of the sealing plug 15 is lower than the ends of all the oil injection needles 13, the sealing plug 15 effectively blocks the flow, forcing the oil to seep outwards again, preventing direct leakage from the middle). Simultaneously, since the outer diameter of the sealing plug 15 is greater than or equal to the diameter of the heating wire assembly hole 33, it can tightly seal the hole, preventing oil leakage.

[0022] The specific oil filling process is as follows: First, the oil cup to be processed includes the oil cup shell 31 and the integrated cotton 32 built inside the oil cup shell 31. The integrated cotton 32 is provided with a heating wire mounting hole 33 that passes through it, and the bottom of the oil cup shell 31 is provided with a shell mounting hole that is aligned with the heating wire mounting hole 33.

[0023] The related drive device 4 drives the entire leak-proof oil injection device to move downward, so that the oil injection needle 13 is inserted into the integrated cotton 32, and the flexible connector 14 is inserted into the heating wire assembly hole 33 of the integrated cotton 32. The sealing plug 15 also extends into the heating wire assembly hole 33. The oil injection needle 13 is connected to the external oil pump device to start injecting oil. Since the sealing plug 15 blocks the heating wire assembly hole 33, and the bottom position of the sealing plug 15 is lower than that of the oil injection needle 13, the e-liquid will not seep into the heating wire assembly hole 33 and then leak out from the outer shell mounting hole. Moreover, the outer diameter of the sealing plug 15 is greater than or equal to the diameter of the heating wire assembly hole 33, which can ensure that the sealing is in place.

[0024] Furthermore, the surface of the needle body 12 is provided with an oil injection groove, and the interior of the needle body 12 is provided with an oil injection channel for connecting the oil injection groove and each oil injection needle 13. Simultaneously, the oil injection groove is externally connected to the oil injection pump body via a pipe connector 11. By setting the oil injection groove and oil injection channel, oil can smoothly enter the oil injection groove from the oil injection pump body through the pipe connector 11, and then be evenly distributed to each oil injection needle 13 through the oil injection channel. This design ensures that the oil can be efficiently injected into the integrated cotton 32, improving the oil injection efficiency. Moreover, integrating the oil injection groove and oil injection channel inside the needle body 12 makes the entire leak-proof oil injection device more compact. This design not only saves space but also makes the equipment easier to operate and maintain.

[0025] Furthermore, the flexible connector 14 is a spring or soft rubber. In actual operation, since the precision of the integrated cotton 32 cannot be guaranteed, if a rigid connection is used, misalignment is difficult to avoid. Once misalignment occurs, the sealing plug 15 may deviate from the center of the hole in the integrated cotton 32, resulting in a poor seal and easy oil leakage. The flexible connector 14, with its flexibility and elasticity, can adapt to the slight misalignment of the integrated cotton 32, ensuring that the sealing plug 15 always remains in the center of the hole in the integrated cotton 32, thereby effectively preventing oil leakage. The flexible connector 14 can also absorb and buffer the impact and vibration generated during the oil injection process, enhancing the stability of the entire leak-proof oil injection equipment. This helps ensure the accuracy and reliability of the oil injection process.

[0026] Referring to Figure 4, it is a structural schematic diagram of the oil injection device of this utility model after being used in conjunction with a specific drive device 4. Further, it also includes a floating pressure plate 2 and a guide rod 5. The surface of the floating pressure plate 2 is provided with a first clearance hole 21 for the oil injection needle 13 to pass through and a second clearance hole 22 for the sealing plug 15 and the flexible connector 14 to pass through. The guide rod 5 passes through the needle body 12 and the floating pressure plate 2 respectively, and a return spring 51 is sleeved on the guide rod 5.

[0027] In the oil injection device of the utility model, in addition to the key components such as the needle body 12, flexible connector 14, oil injection needle 13 and sealing plug 15 mentioned above, it also includes components such as floating pressure plate 2, guide rod 5 and return spring 51.

[0028] The floating pressure plate 2 is an important auxiliary component, and its surface is provided with two types of clearance holes: First clearance hole 21: This hole is designed to allow the oil injection needle 13 to pass smoothly during oil injection. It ensures that the oil injection needle 13 can be accurately inserted into the integrated cotton 32 for oil injection. Second clearance hole 22: This hole is larger than the first clearance hole 21, and its purpose is to allow the sealing plug 15 and the flexible connector 14 to pass through during movement. It ensures that the sealing plug 15 can tightly block the heating wire assembly hole 33, while the flexible connector 14 has sufficient space to expand, contract, and adapt.

[0029] The guide rod 5 is a component that serves for positioning and guiding. It passes through both the needle body 12 and the floating pressure plate 2, ensuring the stability and accuracy of the entire oil injection device during movement. The design of the guide rod 5 allows the needle body 12 and the floating pressure plate 2 to maintain a relatively fixed position, thereby ensuring that the oil injection needle 13 and the sealing plug 15 can be correctly inserted into the predetermined position.

[0030] The return spring 51 is sleeved on the guide rod 5 and located between the needle body 12 and the floating pressure plate 2. Its main function is to help the floating pressure plate 2 return to its initial position after oil injection is completed.

[0031] Working Principle: During the oil filling process, the entire oil filling device is first driven downwards by the relevant drive device 4 (as shown in Figure 4, consisting of a motor and guide rails; since this drive device 4 is a conventional device, its specific structure and connection will not be discussed further here). When the floating pressure plate 2 contacts the oil cup housing 31, the floating pressure plate 2 is limited and stops moving downwards due to the obstruction of the oil cup housing 31. At this time, the needle body 12 continues to move downwards due to the continued drive of the drive device 4. Under the positioning and guiding action of the guide rod 5, the needle body 12 will approach the floating pressure plate 2 and compress the return spring 51. As the needle body 12 continues to move downwards, the oil filling needle 13 will be inserted into the integrated cotton 32 to begin oil filling. At the same time, the sealing plug 15 will also move with the movement of the needle body 12, always remaining within the heating wire assembly hole 33 to prevent oil leakage. After the oil filling is completed, the drive device 4 drives the needle body 12 upwards, at which point the return spring 51 plays a role in helping the floating pressure plate 2 return to its initial position. After the oil filling is completed, the drive device 4 drives the needle body 12 to move upward. Due to the action of the return spring 51, the floating pressure plate 2 will still press against the oil cup housing 31 until the drive component continues to drive upward, that is, the entire floating pressure plate 2 is lifted and moved upward by the action of the guide rod 5, returning to the initial position.

[0032] The overall technical advantages of the solution are:

[0033] 1. Since the bottom of the sealing plug 15 is located lower than the ends of all the oil injection needles 13, and its outer diameter closely matches the diameter of the heating wire assembly hole 33, when oil is injected into the integrated cotton 32 through the oil injection needle 13, even if some oil seeps into the heating wire assembly hole 33, it will be effectively blocked by the sealing plug 15, thus avoiding the problem of oil leakage from the bottom.

[0034] 2. The use of flexible connector 14 further enhances the leak-proof effect. Due to potential differences in the precision of the integrated cotton 32, traditional rigid connections struggle to avoid misalignment. However, the flexible connector 14, with its flexibility and elasticity, can adapt to minor misalignments of the integrated cotton 32, ensuring that the sealing plug 15 always fits tightly in the center of the heating wire assembly hole 33, thereby effectively preventing oil leakage.

[0035] 3. It eliminates the need for traditional funnels and excessive fixtures. Traditional oil injection methods require the use of funnels and fixtures, which is not only cumbersome but also inefficient. In contrast, this leak-proof oil injection device directly achieves both oil injection and leak prevention functions through the injection needle 13 and the sealing plug 15, greatly simplifying the oil injection process and improving production efficiency.

[0036] 4. The oil injection process is more automated and controllable. Through related drive devices 4 (such as cylinders, electric push rods, etc.), the entire leak-proof oil injection device is moved downwards, allowing the oil injection needle 13 and sealing plug 15 to be accurately inserted into the integrated cotton 32 and heating wire assembly hole 33, thus achieving automation and controllability in the oil injection process. This not only improves the accuracy of oil injection but also further increases production efficiency.

[0037] 5. The design of the flexible connector 14 enables the equipment to adapt to integrated cotton 32 of different precision and specifications without the need for special adjustments or modifications for different integrated cotton 32, thereby enhancing the versatility and practicality of the equipment.

[0038] 6. Integrating the oil injection tank and channel within the needle body 12 makes the entire leak-proof oil injection device more compact and simple in structure. This not only saves space but also makes the device easier to operate and maintain. At the same time, the compact structure also helps improve the stability and durability of the device.

[0039] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A leak-proof oil injection device, characterized in that, It includes a needle body and a connector, wherein the needle body is connected to several oil injection needles, and one end of the connector is connected to the needle body, and the other end of the connector is connected to a sealing plug; the bottom plane of the sealing plug is lower than the plane of the ends of all the oil injection needles; the outer diameter of the sealing plug is greater than or equal to the diameter of the heating wire assembly hole.

2. A leak-proof oil filling apparatus according to claim 1, characterized in that: The number of connectors can be single or multiple.

3. The leak-proof oil injection device according to claim 1, characterized in that: The needle body has an internal oil injection channel for connecting each oil injection needle, and the needle body also has an oil injection connector that connects to the oil injection channel.

4. The leak-proof oil injection device according to claim 1, characterized in that: The connector is a flexible connector, and the flexible connector is a spring or soft rubber.

5. The leakproof oil filling apparatus according to claim 1, characterized in that: It also includes a floating pressure plate and a guide rod. The surface of the floating pressure plate is provided with a first clearance hole for the oil injection needle to pass through and a second clearance hole for the sealing plug and the flexible connector to pass through. The guide rod passes through the needle body and the floating pressure plate respectively, and a return spring is sleeved on the guide rod.

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