Double-end dispensing needle
By designing the elastic reset component and connecting mechanism of the double-headed dispensing needle, the problems of hard damage and inconvenient replacement in the event of failure of the existing dispensing needle are solved, realizing the protection and adaptive replacement of the needle valve system, and improving the stability and flexibility of the equipment.
Patent Information
- Application Number
- CN202520227099.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Most existing dispensing needles are one-piece designs, which means they cannot stop in time when mechanical failures occur at ultra-small points in the needle valve system, easily causing hard damage to the needle valve. Furthermore, they are inconvenient to replace when bent or mismatched.
A dual-headed dispensing needle was designed, comprising two upper needle bodies and a needle body protection mechanism. The replaceable needle body can be detached and installed through a spring-loaded reset component and a connecting mechanism. Combined with a limiting guide tube for protection and guidance, it ensures that the needle body is protected from rigid damage in case of failure, and the needle body can be replaced as needed.
It effectively avoids rigid damage to ultra-small points in the needle valve system, reduces the probability of bending and misalignment, and facilitates needle replacement, adapting to needle valve system points of different sizes.
Smart Images
Figure CN223832710U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dispensing needle technology, specifically to a double-headed dispensing needle. Background Technology
[0002] Currently, dispensing needles are used for trigger control in ultra-small point control of needle valve systems. Generally, the dispensing needle is mounted on a double-headed cylinder, which drives the dispensing needle to move, thereby opening and closing the control point within the needle valve system through dispensing. However, most existing dispensing needles are one-piece, and because they are used to control ultra-small points, they are mostly very thin. Therefore, when the ultra-small point of the needle valve system experiences mechanical failure and jamming, the current dispensing needle cannot stop in time, which can easily cause further hard damage to the needle valve. Furthermore, when the dispensing needle is bent or the model is incompatible, the existing dispensing needle is not convenient to replace. Therefore, a double-headed dispensing needle is proposed. Utility Model Content
[0003] The purpose of this invention is to address the problems that most existing dispensing needles are one-piece designs, and because they are used to control ultra-small dots, they are mostly thin. As a result, when the ultra-small dots of the needle valve system become mechanically jammed, the current dispensing needles cannot stop in time, which can easily cause further damage to the needle valve. Furthermore, when the dispensing needle is bent or the model is incompatible, the existing dispensing needles are not easy to replace. This invention provides a double-headed dispensing needle.
[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0005] A double-ended dispensing needle includes two upper needle bodies, one end of each upper needle body being mounted on a double-ended cylinder. The needle body is characterized in that one end of each upper needle body is provided with a needle protection mechanism, and a connecting mechanism is provided on one side of the needle protection mechanism. A replacement needle body is provided at the lower end of the connecting mechanism.
[0006] Preferably, the needle protection mechanism includes a support plate, which is fixedly installed on the upper needle body, and elastic reset members are symmetrically installed on the side wall of the support plate.
[0007] Preferably, the connecting mechanism includes a connecting block, a connecting screw hole is provided on the side wall of the connecting block, an external thread is provided on the outer side wall of one end of the replacement needle body, and the replacement needle body is screwed into the connecting screw hole, and one side of the connecting block is fixedly connected to the elastic reset member.
[0008] Preferably, the elastic reset component includes a reset spring, with both ends of the reset spring fixedly installed on the side walls of the support plate and the connecting block, and two guide telescopic tube sections are slidably sleeved on the outer side of the reset spring, with one end of each guide telescopic tube section fixedly installed on the side walls of the support plate and the connecting block.
[0009] Preferably, the side wall of the connecting block is provided with a transverse pin hole, the side wall of the replacement pin body is provided with a positioning pin hole, and the positioning pin hole is matched with the transverse pin hole. A positioning threaded pin is provided between the positioning pin hole and the transverse pin hole, and internal threads are provided in both the positioning pin hole and the transverse pin hole.
[0010] Preferably, a trigger needle is fixedly installed at one end of the replacement needle body, and a limiting guide tube is slidably sleeved on the replacement needle body.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. In this utility model, when using a dispensing needle formed by the combination of the upper needle body and the replacement needle body, if the needle valve system experiences a mechanical jamming failure, the replacement needle body and the connecting block can be moved relative to the upper needle body by the set elastic reset component, thereby avoiding rigid damage to the ultra-small points of the needle valve system and thus preventing the expansion of damage caused by the failure.
[0013] 2. By installing a limiting guide tube on the outside of the needle valve system point, the replacement needle body can be protected, reducing the probability of bending and misalignment of the replacement needle body. Furthermore, the replacement needle body is detachably installed on the connecting block, allowing for needle replacement according to the size of the needle valve system point. This facilitates the application of needle valve system points of different sizes. Moreover, the set trigger needle head can increase the volume of the replacement needle body while maintaining the triggering effect, further reducing the probability of deformation errors. Attached Figure Description
[0014] Figure 1 This is a front view schematic diagram of the overall three-dimensional connection structure of this utility model;
[0015] Figure 2 This is a three-dimensional connection structure diagram of the connecting mechanism and the needle protection mechanism 4 in this utility model;
[0016] Figure 3 This is a schematic diagram of the three-dimensional connection structure between the replacement needle body and the trigger needle in this utility model.
[0017] Reference numerals: 1. Upper needle body; 2. Limiting guide tube; 3. Replacement needle body; 4. Needle body protection mechanism; 401. Support plate; 402. Spring reset component; 5. Connecting mechanism; 501. Connecting block; 502. Transverse pin hole; 503. Positioning threaded pin; 504. Connecting screw hole; 6. Positioning pin hole; 7. Trigger needle. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0020] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0021] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They 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. Therefore, they should not be construed as limitations on this utility model.
[0022] like Figure 1-3 As shown, a double-headed dispensing needle includes two upper needle bodies 1. One end of each upper needle body 1 is mounted on a double-headed cylinder. One end of each upper needle body 1 is provided with a needle protection mechanism 4. The needle protection mechanism 4 includes a support plate 401, which is fixedly mounted on the upper needle body 1. Elastic reset members 402 are symmetrically mounted on the side wall of the support plate 401. The elastic reset members 402 can prevent rigid damage to the ultra-small points of the needle valve system, thereby preventing the expansion of damage caused by malfunction.
[0023] A connecting mechanism 5 is provided on one side of the needle protection mechanism 4. The connecting mechanism 5 includes a connecting block 501. A connecting screw hole 504 is provided on the side wall of the connecting block 501. An external thread is provided on the outer side wall of one end of the replacement needle body 3. The replacement needle body 3 is screwed into the connecting screw hole 504. One side of the connecting block 501 is fixedly connected to the spring reset member 402. The replacement needle body 3 is installed on the connecting block 501 in a detachable manner, so that the needle body can be replaced according to the size of the needle valve system point, which can facilitate the application of different needle valve system points.
[0024] The elastic reset component 402 includes a reset spring, with both ends of the reset spring fixedly mounted on the side walls of the support plate 401 and the connecting block 501, respectively. Two guide telescopic tubes are slidably sleeved on the outer side of the reset spring, with one end of each guide telescopic tube fixedly mounted on the side walls of the support plate 401 and the connecting block 501, respectively. The guide telescopic tubes improve the movement stability between the connecting block 501 and the support plate 401.
[0025] A replacement needle body 3 is provided at the lower end of the connecting mechanism 5. A transverse pin hole 502 is provided on the side wall of the connecting block 501, and a positioning pin hole 6 is provided on the side wall of the replacement needle body 3. The positioning pin hole 6 is matched with the transverse pin hole 502. A positioning threaded pin 503 is provided between the positioning pin hole 6 and the transverse pin hole 502. Both the positioning pin hole 6 and the transverse pin hole 502 are provided with internal threads. The positioning threaded pin 503 can further improve the stability of the replacement needle body 3 after installation. A trigger needle 7 is fixedly installed at one end of the replacement needle body 3, and a limiting guide tube 2 is slidably sleeved on the replacement needle body 3. By installing the limiting guide tube 2 on the outside of the needle valve system point, the replacement needle body 3 can be protected, reducing the probability of the replacement needle body 3 bending and misalignment.
[0026] In summary: The replacement needle body 3 is screwed into the connecting screw hole 504 of the connecting block 501, and then the positioning threaded pin 503 is screwed into the transverse pin hole 502 and the positioning pin hole 6. This allows the upper needle body 1 and the replacement needle body 3 to combine to form a dispensing needle. Then, a limiting guide tube 2 is installed on the outside of the needle valve system point. During the movement of the replacement needle body 3, it is guided by the limiting guide tube 2, and the trigger needle head 7 is used to trigger and control the ultra-small positioning within the hole. If the needle valve system experiences a mechanical jamming failure, the elastic reset member 402 will cause relative movement between the replacement needle body 3 and the connecting block 501 and the upper needle body 1, thereby avoiding rigid damage to the ultra-small point of the needle valve system.
[0027] The foregoing description enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A double-headed dispensing needle, comprising two upper needle bodies (1), one end of each of the two upper needle bodies (1) being respectively mounted on a double-headed cylinder, characterized in that, One end of the upper needle body (1) is provided with a needle protection mechanism (4), and a connecting mechanism (5) is provided on one side of the needle protection mechanism (4). A replacement needle body (3) is provided at the lower end of the connecting mechanism (5).
2. The double-ended dispensing needle according to claim 1, characterized in that, The needle protection mechanism (4) includes a support plate (401), which is fixedly installed on the upper needle body (1), and elastic reset members (402) are symmetrically installed on the side wall of the support plate (401).
3. A double-ended dispensing needle according to claim 2, characterized in that, The connecting mechanism (5) includes a connecting block (501), a connecting screw hole (504) is provided on the side wall of the connecting block (501), an external thread is provided on the outer side wall of one end of the replacement needle body (3), and the replacement needle body (3) is screwed into the connecting screw hole (504). One side of the connecting block (501) is fixedly connected to the elastic reset member (402).
4. A double-ended dispensing needle according to claim 3, characterized in that, The elastic reset component (402) includes a reset spring. The two ends of the reset spring are respectively fixedly installed on the side walls of the support plate (401) and the connecting block (501). Two guide telescopic tubes are slidably sleeved on the outer side of the reset spring. One end of the two guide telescopic tubes is respectively fixedly installed on the side walls of the support plate (401) and the connecting block (501).
5. A double-ended dispensing needle according to claim 3, characterized in that, The connecting block (501) has a transverse pin hole (502) on its side wall, and the replacement pin body (3) has a positioning pin hole (6) on its side wall. The positioning pin hole (6) is matched with the transverse pin hole (502). A positioning threaded pin (503) is provided between the positioning pin hole (6) and the transverse pin hole (502). Both the positioning pin hole (6) and the transverse pin hole (502) have internal threads.
6. A double-ended dispensing needle according to claim 5, characterized in that, One end of the replacement needle body (3) is fixedly installed with a trigger needle (7), and a limiting guide tube (2) is slidably sleeved on the replacement needle body (3).