Quantitative liquid injection assembly

Abstract

The utility model is suitable for the field of liquid injection devices, and provides a quantitative liquid injection assembly which comprises a cylinder body and a piston rod which is arranged in the cylinder body and moves in the axis direction of the cylinder body. The piston rod and the cylinder body are connected through a limiting piece capable of being stretched; a marking block is rotationally mounted at the end part of the cylinder body, and a plurality of recording marks are arranged on the peripheral surface of the marking block; the piston rod rotates around the axis to drive the marking block to rotate; a locking block is arranged at the preset position of the limiting piece, and after the piston rod rotates, the locking block is driven to be locked, so that the limiting piece cannot be partially stretched, and therefore, the quantitative supply device can be switched between a complete release state and an incomplete release state, quantitative supply is realized, and the supply quantity does not need to be worried about.

Description

Technical Field

[0001] The utility model relates to the field of liquid filling devices, in particular to a quantitative liquid injection assembly. Background Art

[0002] A UV printer is a digital printing device that utilizes ultraviolet curing technology. Different from traditional printing technologies, a UV printer uses an ultraviolet light source to rapidly cure the ink while printing, enabling the printed matter to be dried instantly, thereby achieving an efficient and environmentally friendly printing process.

[0003] After a UV printer has been used for a period of time, maintenance work needs to be carried out. The specific maintenance process is to inject cleaning liquid and moisturizing liquid into the nozzle and the nozzle pipeline through a syringe. The specific steps are as follows: First, inject the cleaning liquid into the pipeline, and the cleaning liquid flows out through the return pipe; subsequently, inject a quantitative amount of moisturizing liquid into the pipeline, and the moisturizing liquid flows out through the return pipe. Finally, close the return pipe and continue to pressurize the liquid, and part of the moisturizing liquid flows out through the nozzle.

[0004] When a traditional syringe is used, the injection amount of the moisturizing liquid cannot be guaranteed when it is injected into the pipeline.

[0005] In summary, it is obvious that there are inconveniences and defects in the prior art in actual use, so it is necessary to make improvements. Summary of the Utility Model

[0006] Aiming at the above-mentioned defects, the purpose of the utility model is to provide a quantitative liquid injection assembly, which can be switched between a fully released state and an incompletely released state to achieve quantitative supply without worrying about the amount of supply.

[0007] To achieve the above purpose, the utility model provides a quantitative liquid injection assembly, which includes a barrel body and a piston rod disposed inside it and moving along its axial direction; the piston rod and the barrel body are connected by a limiting member that can be stretched; a marking block is rotatably installed at the end of the barrel body, and a plurality of recording marks are provided on the circumferential surface of the marking block; the rotation of the piston rod around the axis will drive the rotation of the marking block; a locking block is provided at a predetermined position of the limiting member, and after the piston rod rotates, the position of the locking block is locked, causing a part of the limiting member not to be stretchable.

[0008] According to the quantitative liquid injection assembly of the utility model, the limiting member is a spring; the locking block is fixedly connected to a predetermined position in the middle thereof and is divided into a first stretching part and a second stretching part.

[0009] According to the quantitative liquid injection assembly of the utility model, a rotation positioning structure is provided between the piston rod and the marking block, which includes a positioning protrusion provided on the rod wall of the piston rod and a positioning groove provided on the marking block for accommodating the positioning protrusion.

[0010] According to the quantitative liquid injection assembly of the present utility model, the positioning protrusion is a "cross" protrusion structure.

[0011] According to the quantitative liquid injection assembly of the present utility model, a locking structure is provided between the marking block and the locking block, which includes a slot provided on the marking block and an insertion block provided on the locking block; when the insertion block is inserted into the slot, the position of the locking block is locked.

[0012] According to the quantitative liquid injection assembly of the present utility model, a positioning structure for restricting the rotation of the locking block is provided between the locking block and the inner wall of the barrel body, which includes a slider provided on the side wall of the locking block and a sliding groove provided on the inner wall of the barrel body for installing the slider.

[0013] The present utility model provides a quantitative liquid injection assembly, which includes a barrel body and a piston rod placed inside it and moving along its axis direction. Among them, the piston rod includes a sealing gasket and a rod body. When sucking or squeezing liquid, only by holding and driving the piston rod to move can the barrel body be driven to generate negative pressure for sucking liquid or positive pressure for squeezing liquid. The piston rod and the barrel body are connected by a limiting member that can be stretched. The limiting member is used to limit the movement range (moving distance) of the piston rod. If the limiting member is in a fully stretched state, the movement of the piston rod can squeeze out all the liquid in the barrel body, that is, the movement amount of the piston rod is basically equal to the length of the barrel body. The locking block is fixedly connected to a predetermined position in the middle and is divided into a first stretching part and a second stretching part. The present utility model can be switched between a fully released state and an incompletely released state to achieve quantitative supply without worrying about the amount of supply. Description of the Drawings

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is an internal structural schematic diagram of the present utility model;

[0016] Figure 3 is a first perspective view of the marking block of the present utility model;

[0017] Figure 4 is a second perspective view of the marking block of the present utility model;

[0018] Figure 5 is a structural diagram of the limiting member and the locking block;

[0019] In the figure, 1 - barrel body, 2 - piston rod, 21 - sealing gasket, 22 - rod body, 23 - positioning protrusion, 24 - positioning groove, 3 - marking block, 4 - limiting member, 41 - first stretching part, 42 - second stretching part, 5 - locking block, 51 - slider, 53 - slot, 54 - insertion block. Detailed Embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Refer to Figure 1 and Figure 2 , the present utility model provides a quantitative liquid injection assembly. The quantitative liquid injection assembly includes a barrel body 1 and a piston rod 2 disposed inside it and moving along its axial direction. Among them, the piston rod 2 includes a sealing gasket 21 and a rod body 22. When sucking or squeezing liquid, only by holding and driving the piston rod 2 to move can the barrel body 1 be driven to generate a negative pressure for sucking liquid or a positive pressure for squeezing liquid.

[0022] The piston rod 2 and the barrel body 1 are connected by a limiting member 4 that can be stretched. The limiting member 4 is used to limit the movement range (moving distance) of the piston rod 2. If the limiting member 4 is in a fully stretched state, the movement of the piston rod 2 can squeeze out all the liquid in the barrel body 1, that is, the movement amount of the piston rod 2 is basically equal to the length of the barrel body 1. The limiting member 4 is a spring in this example; the locking block 5 is fixedly connected to a predetermined position in the middle thereof and is divided into a first stretching portion 41 and a second stretching portion 42.

[0023] Refer to Figure 1 , Figure 3 and Figure 4 , a marking block 3 is rotatably installed at the end of the barrel body 1. A plurality of recording marks 31 are provided on the circumferential surface of the marking block 3; specifically in this embodiment, two recording marks 31 are provided and can be marked with different colors respectively. For example, "blue" indicates that the liquid injection device is in a fully released state, and "red" indicates an incompletely released state. The rotation of the piston rod 2 around the axis will drive the rotation of the marking block 3. Specifically, a rotation positioning structure is provided between the piston rod 2 and the marking block 3, which includes a positioning protrusion 23 provided on the rod wall of the piston rod 2 (in order to optimize the stability of the rotation positioning structure, the positioning protrusion 23 is preferably a "cross" protrusion structure) and a positioning groove 24 provided on the marking block 3 and used to accommodate the positioning protrusion 23. Corresponding points are provided on the barrel body 1. When the corresponding recording mark 3 coincides with the corresponding point, it indicates that the liquid injection device is in the corresponding state (if corresponding to "blue", it indicates that the liquid injection device is in a fully released state).

[0024] Refer to Figure 1 , Figure 2 and Figure 5A locking block 5 is provided at a predetermined position of the limiting member 4. The locking block 5 is used to limit the stretching length of the limiting member 4, thereby determining the output of the liquid injection device. When the device is in an incompletely released state, after the piston rod 2 rotates, the position of the locking block 5 is locked, causing a part of the limiting member 4 not to be stretched (the second stretching portion 42 is positioned and cannot be stretched). When the device enters the fully released state, the piston rod 2 rotates in the reverse direction, the locking block 5 is released, and the limiting member 4 can be completely stretched by the piston rod 2. Specifically, in this embodiment, a locking structure is provided between the marking block 3 and the locking block 5, which includes a slot 53 provided on the marking block 3 and a plug 54 provided on the locking block 5 (for the sake of matching the rotation locking effect, as shown in the figure, the plug 54 is an inclined plug); after the plug 54 is inserted into the slot 53, the position of the locking block 5 is locked (at this time, the distance between the locking block 5 and the marking block 3 is fixed).

[0025] Preferably, to prevent the piston rod 2 from rotating and driving the locking block 5 to rotate, thereby failing to cooperate with the locking of the marking block 3, a positioning structure for restricting the rotation of the locking block 5 is provided between the locking block 5 of the present utility model and the inner wall of the barrel body 1. The positioning structure includes a slider 51 provided on the side wall of the locking block 5 and a chute provided on the inner wall of the barrel body 1 for installing the slider 51. The rotation positioning effect of the locking block 5 is generated while the locking block 5 moves through the cooperation of the slider 51 and the chute (the locking block 5 cannot rotate).

[0026] During the use of this application, when in the absorption state and the cleaning agent output state, the device is in the fully released state. At this time, the piston rod 2 and the barrel body 1 can perform the maximum measurement of absorption and output.

[0027] When outputting the moisturizing agent, the device is first in an incompletely released state for quantitative output, and a quantitative moisturizing agent is injected into the pipeline (at this time, there is no need to worry about the amount of output). Subsequently, the return pipe is closed, and the device is first in the fully released state to discharge the remaining moisturizing liquid.

[0028] In summary, the present utility model provides a quantitative liquid injection assembly, including a barrel body and a piston rod placed inside it and moving along its axis direction. Among them, the piston rod includes a sealing gasket and a rod body. When sucking or squeezing liquid, only by holding and driving the piston rod to move can the barrel body be driven to generate the negative pressure for sucking liquid or the positive pressure for squeezing liquid. The piston rod and the barrel body are connected by a limiting member that can be stretched. The limiting member is used to limit the movement range (moving distance) of the piston rod. If the limiting member is in the fully stretched state, the movement of the piston rod can squeeze out all the liquid in the barrel body, that is, the movement amount of the piston rod is basically equal to the length of the barrel body. The locking block is fixedly connected to a predetermined position in the middle and is divided into a first stretching portion and a second stretching portion. The present utility model can be switched between the fully released state and the incompletely released state to achieve quantitative supply without worrying about the amount of supply.

[0029] Of course, the present utility model may also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and modifications according to the present utility model. However, these corresponding changes and modifications should all fall within the protection scope of the appended claims of the present utility model.

Claims

1. A quantitative liquid injection assembly, characterized in that, It includes a cylinder body and a piston rod placed inside it and moving along its axial direction; the piston rod and the cylinder body are connected by a limiting member that can be stretched. A marking block is rotatably installed at the end of the cylinder body, and a number of recording marks are provided on the circumferential surface of the marking block; the rotation of the piston rod around the axis will drive the rotation of the marking block. A locking block is provided at a predetermined position of the limiting member. After the piston rod rotates, the position of the locking block is locked, causing a part of the limiting member to be unable to be stretched.

2. The quantitative liquid injection assembly according to claim 1, wherein The limiting member is a spring; the locking block is fixedly connected to a predetermined position in the middle thereof and is divided into a first stretching portion and a second stretching portion.

3. The quantitative liquid injection assembly according to claim 1, wherein, A rotation positioning structure is provided between the piston rod and the marking block, which includes a positioning protrusion provided on the wall of the piston rod and a positioning groove provided on the marking block for accommodating the positioning protrusion.

4. The quantitative liquid injection assembly according to claim 3, characterized in that The positioning protrusion is a "cross" protrusion structure.

5. The quantitative liquid injection assembly according to claim 1, wherein, A locking structure is provided between the marking block and the locking block, which includes a slot provided on the marking block and an insertion block provided on the locking block. When the insertion block is inserted into the slot, the position of the locking block is locked.

6. The quantitative liquid injection assembly according to claim 1, characterized in that, A positioning structure for restricting the rotation of the locking block is provided between the locking block and the inner wall of the cylinder body, which includes a slider provided on the side wall of the locking block and a sliding groove provided on the inner wall of the cylinder body for installing the slider.

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