Splash-proof liquid injection needle and liquid injection device

Abstract

The utility model discloses a splash-proof liquid injection needle which comprises a needle body, a first flow channel is arranged in the needle body, at least two through holes communicated with the first flow channel are formed in the side edge of the lower end portion of the needle body, the through holes are connected with a liquid injection portion, a second flow channel is arranged in the liquid injection portion, and a liquid injection opening of the second flow channel faces downwards obliquely or vertically. The liquid is sprayed out in the same direction, and the liquid close to the inner side needs to flow out of the liquid injection port before the liquid close to the outer side, so that the liquid is finally sprayed out in an arc-shaped track and finally makes contact with the inner side wall of the workpiece, flows downwards along the side wall, and makes contact with the side wall of the workpiece in the same sequence. And the force of sprayed liquid is prevented from being concentrated at one point, so that the impact of the liquid on the side wall of the workpiece is greatly reduced, and the condition of liquid splashing is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid injection device accessories, in particular to a liquid injection needle and a liquid injection device that prevents liquid from splashing. Background Art

[0002] Products such as batteries and electronic cigarettes all have liquid as a medium. Liquid needs to be injected into them during the production process. At this time, equipment such as the public patent technical documents "CN210778806U, a soft-pack battery injection mechanism" and "CN116584716A, an oil injection device for electronic cigarette manufacturing" are needed to perform liquid injection operations on the workpiece. However, the current problem is that the pressure of the liquid is constant during the injection process, and it is sprayed vertically downward. The injection space is small. As the injection liquid level rises, or the impact generated during the injection is too large, the liquid will splash out of the workpiece; it may cause corrosion to the workbench or the cleaned stains, affecting the normal operation of the equipment. Utility Model Content

[0003] The purpose of the utility model is to provide a splash-proof liquid injection needle and a liquid injection device to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A splash-proof liquid injection needle comprises a needle body, wherein a flow channel 1 is arranged in the needle body, at least two through holes connected to the flow channel 1 are arranged on the side of the lower end of the needle body, the through holes are connected to an injection part, and a flow channel 2 is arranged in the injection part, and the injection port of the flow channel 2 is inclined downward or vertically oriented.

[0006] According to a further technical solution, the liquid injection portion and the needle body are integrally formed, and the second flow channel is a straight line inclined downward.

[0007] According to a further technical solution, the injection portion is in the shape of an elongated strip, the angle between the injection portion and the needle body is 100°-120°, and the second flow channel extends obliquely along the direction of the injection portion.

[0008] According to a further technical solution, the injection port is flush with the lower end of the needle body, and the angle between the extension line of the second flow channel and the plane of the injection port is 20°-30°.

[0009] A liquid injection device, comprising the above-mentioned anti-splash liquid injection needle and a fixing frame, wherein a clamping assembly, a lifting assembly and an anti-drip assembly are installed on the fixing frame;

[0010] The clamping assembly passes through the fixing frame to fix the workpiece;

[0011] The needle body is installed on the lifting assembly and passes through the fixing frame to correspond to the workpiece;

[0012] The anti-drip component can be placed below the liquid injection part.

[0013] A further technical solution is that the clamping assembly includes a supporting part, a lifter is installed on the supporting part, a movable frame is installed on the output end of the lifter, the movable frame is provided with a "V"-shaped movable groove, a movable rod is movably connected in the movable groove, two movable rods are respectively connected to clamping plates, a plurality of buffer suction cups are provided on opposite sides of the two clamping plates, and the clamping plates are connected to the bottom of the fixed frame through a sliding pair.

[0014] According to a further technical solution, the anti-drip component comprises an extending cylinder horizontally mounted on a fixed frame, a connecting frame is mounted on an output end of the extending cylinder, a plurality of trays are arranged on the connecting frame, and each tray corresponds to an injection needle.

[0015] Beneficial effects of the utility model:

[0016] During liquid injection, the liquid is ejected in the same direction, and the liquid near the inner side flows out of the injection port before the liquid near the outer side, so the liquid is finally ejected in an arc-shaped trajectory and finally contacts the inner wall of the workpiece, flowing downward along the side wall. The liquid ejected along the arc-shaped trajectory also contacts the side wall of the workpiece in a certain order, avoiding the force of the ejected liquid from being concentrated at one point, thereby greatly reducing the impact of the liquid on the side wall of the workpiece and reducing the occurrence of liquid splashing.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 : A three-dimensional structural diagram of the injection needle of the present utility model.

[0019] Figure 2 : A cross-sectional view of an injection needle of the present utility model.

[0020] Figure 3 : Angle diagram of the injection needle of the present utility model.

[0021] Figure 4 : A three-dimensional structural diagram of a liquid injection device of the present utility model.

[0022] Figure 5 : Structural diagram of the T-head clamping assembly of the present utility model.

[0023] Figure markings: 1-injection needle, 11-needle body, 12-channel one, 13-injection part, 14-channel two, 15-injection port, 21-fixed frame, 22-clamping assembly, 221-support part, 222-lifting device, 223-movable frame, 224-movable groove, 225-sliding member, 226-movable rod, 227-clamping plate, 228-buffer suction cup, 229-sliding pair, 23-lifting assembly, 241-extending cylinder, 242-connecting frame, 243-tray. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] Please refer to Figure 1-5 ;

[0026] The injection needle 1 described in the utility model can be used in a device for injecting electrolyte into a battery pack, for example, or a device for injecting e-cigarette oil into a cigarette cartridge of an electronic cigarette, and is intended to achieve a splash-proof effect; it specifically comprises a needle body 11, a flow channel 12 is provided in the needle body 11, at least two through holes connected to the flow channel 12 are provided on the side of the lower end of the needle body 11, the through holes are connected to a liquid injection part 13, and a flow channel 2 14 is provided in the liquid injection part 13; in the present embodiment, the specific materials of the needle body 11 and the liquid injection part 13 are not limited, for example, the needle body 11 can be in a vertical state and made of a hard material, while the liquid injection part 13 is made of a soft material, and a plug-in part is provided near the through hole of the needle body 11, and the liquid injection part 13 is connected to the plug-in part by a forced plugging method, so that the flow channel 2 14, the through hole and the flow channel 1 12 are connected.

[0027] Embodiment 1;

[0028] The injection part 13 uses a hose to make the flow channel 14 in a curved state, and an injection port is formed at the end of the injection part 13. When in use, the needle body 11 and the injection part 13 enter the workpiece. At this time, the injection port 15 is tilted downward and is not facing the side wall of the workpiece. During injection, the liquid is ejected from the injection part 13, and the liquid contacts the side wall of the workpiece and flows downward along the side wall. Even if the liquid splashes after contacting the side wall, the liquid will flow toward the inner cavity of the workpiece, thereby achieving the purpose of splash prevention. Preferably, assuming that the side wall of the workpiece is a vertical plane, and the angle between the extension line of the position of the injection port 15 and the plane is less than 45°, the impact of the ejected liquid on the plane can be reduced, thereby reducing the splashing liquid;

[0029] Embodiment 2:

[0030] The injection part 13 and the needle body 11 are integrally formed, that is, the injection part 13 is also made of a hard material, wherein the flow channel 14 is straight and inclined downward, and the injection port 15 is vertically downward. During injection, the liquid is sprayed out in the same direction, and the liquid close to the inner side flows out of the injection port 15 before the liquid close to the outer side, so that the liquid is finally sprayed out in an arc trajectory and finally contacts the inner wall of the workpiece and flows downward along the side wall. The liquid sprayed along the arc trajectory also contacts the side wall of the workpiece in a sequence, avoiding the force of the sprayed liquid from being concentrated at one point, thereby greatly reducing the impact of the liquid on the side wall of the workpiece and reducing the occurrence of liquid splashing.

[0031] It should be noted that when entering the inner cavity of the workpiece, the injection part 13 will be as close to the side wall of the workpiece as possible to reduce the time that the sprayed liquid stays in the air and is accelerated by gravity, that is, the impact force of the liquid on the side wall of the workpiece is reduced. The injection part 13 will not touch the liquid in the workpiece and will control the injection amount. Even if the liquid level rises, the liquid that is finally touched by the injection part 13 will not directly contact the liquid surface, but will always remain injected into the side wall of the workpiece, thereby avoiding the possibility of splashing from the liquid surface.

[0032] In the embodiment of the utility model, the injection portion 13 is in the shape of an elongated strip, and the angle a between the injection portion 13 and the needle body 11 is 100°-120°, so that the injection portion 13 can extend laterally as close to the inner wall of the workpiece as possible, so that the injection needle 1 does not need to penetrate too deep into the interior of the workpiece, and the flow channel 14 extends obliquely along the direction of the injection portion 13. In addition, the injection port 15 is flush with the lower end of the needle body 11, and the angle b between the extension line of the flow channel 14 and the plane of the injection port 15 is 20°-30°.

[0033] The utility model also discloses an injection device including the above-mentioned splash-proof injection needle 1. In addition, the injection device also includes a fixed frame 21, on which a clamping assembly 22, a lifting assembly 23 and an anti-drip assembly are installed; first, the clamping assembly 22 passes through the fixed frame 21 to fix the workpiece, and the needle body 11 is installed on the lifting assembly 23, and passes through the fixed frame 21 to correspond to the workpiece, and the injection needle 1 is driven up and down by the lifting assembly 23 to be inserted into the workpiece. In addition, the anti-drip assembly can be placed below the injection part 13. When the injection needle 1 comes out of the inner cavity of the workpiece, the anti-drip assembly extends out and is placed below the injection needle 1 to prevent the injection needle 1 from dripping onto the parts of the device.

[0034] The utility model relates to one embodiment of the clamping assembly 22, which specifically includes a support portion 221, on which a lifter 222 is installed. The lifter 222 in this embodiment can be a combination of a cylinder or a motor and a screw rod pair. A movable frame 223 is installed at the output end of the lifter 222, and a "V"-shaped movable groove 224 is provided on the movable frame 223. A movable rod 226 is movably connected in the movable groove 224. Preferably, a sliding member 225 such as a roller or a bearing is provided in the movable groove 224, and the movable rod 226 is connected to the sliding member 225. Then, the two movable rods 226 are respectively connected with clamping plates 227, and a plurality of buffer suction cups 228 are arranged on opposite sides of the two clamping plates 227, and the clamping plates 227 are connected to the bottom of the fixed frame 21 through a sliding pair 229; when the lifter 222 drives the movable part to move up and down, the two clamping arms are restricted by the sliding pair 229, and the movable mode of the movable rod 226 is limited, and the movable rod 226 cannot move up and down, but can only move along the movable groove 224, and at the same time pull the two clamping plates 227 to open or clamp, and the buffer suction cup 228 contacts the workpiece, which plays a protective role on the workpiece;

[0035] If there are few injection stations, air grippers or other methods can be used as a substitute. However, in actual production, there are many injection stations, and air grippers or other methods are not enough to clamp multiple workpieces. Multiple air grippers need to be set up, but there is not so much space in the device. Therefore, the above structure can effectively save parts and space, and the clamping force will not be attenuated too much, which can meet production needs.

[0036] One of the embodiments of the anti-drip component of the utility model is a stretching cylinder 241 horizontally installed on a fixed frame 21, and a connecting frame 242 is installed on the output end of the stretching cylinder 241. A plurality of trays 243 are arranged on the connecting frame 242, and each tray 243 corresponds to an injection needle 1. The plurality of trays 243 are driven into or away from the bottom of the injection needle 1 by the telescopic action of the stretching cylinder 241. Preferably, the plurality of trays 243 are fixed to the connecting frame 242 by screws or buckles. When the liquid in the tray 243 accumulates to a certain amount, the tray 243 is removed for cleaning through a detachable structure.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A splash-proof injection needle, characterized in that: The invention comprises a needle body (11), wherein a flow channel 1 (12) is arranged in the needle body (11), and at least two through holes communicating with the flow channel 1 (12) are arranged on the side of the lower end of the needle body (11), wherein the through holes are connected to a liquid injection portion (13), and a flow channel 2 (14) is arranged in the liquid injection portion (13), and the liquid injection port (15) of the flow channel 2 (14) is inclined downward or vertically oriented.

2. The splash-proof injection needle according to claim 1, characterized in that: The liquid injection portion (13) and the needle body (11) are integrally formed, and the second flow channel (14) is a straight line inclined downward.

3. The splash-proof injection needle according to claim 2, characterized in that: The liquid injection portion (13) is in the shape of an elongated strip, the angle between the liquid injection portion (13) and the needle body (11) is 100°-120°, and the second flow channel (14) extends obliquely along the direction of the liquid injection portion (13).

4. The splash-proof injection needle according to claim 3, characterized in that: The injection port (15) is flush with the lower end of the needle body (11), and the angle between the extension line of the second flow channel (14) and the plane of the injection port (15) is 20°-30°.

5. A liquid injection device, comprising the anti-splash liquid injection needle according to any one of claims 1 to 4 and a fixing frame (21), wherein a clamping assembly (22), a lifting assembly (23) and an anti-drip assembly are installed on the fixing frame (21); The clamping assembly (22) passes through the fixing frame (21) and is used to fix the workpiece; The needle body (11) is mounted on the lifting assembly (23) and passes through the fixing frame (21) to correspond to the workpiece; The anti-drip component can be placed below the liquid injection portion (13).

6. A liquid injection device according to claim 5, characterized in that: The clamping assembly (22) comprises a supporting portion (221), a lifter (222) is mounted on the supporting portion (221), a movable frame (223) is mounted on the output end of the lifter (222), a movable groove (224) in a "V" shape is provided on the movable frame (223), a movable rod (226) is movably connected in the movable groove (224), two movable rods (226) are respectively connected to clamping plates (227), a plurality of buffer suction cups (228) are arranged on opposite sides of the two clamping plates (227), and the clamping plates (227) are connected to the bottom of the fixed frame (21) via a sliding pair (229).

7. A liquid injection device according to claim 5, characterized in that: The anti-drip component comprises an extension cylinder (241) horizontally mounted on a fixing frame (21); a connecting frame (242) is mounted on the output end of the extension cylinder (241); a plurality of trays (243) are arranged on the connecting frame (242); and each tray (243) corresponds to an injection needle.

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