A filling needle structure for a filling machine

Abstract

The utility model discloses a filling needle structure for a filling machine, aiming to provide a filling needle structure for a filling machine that simplifies operation, can improve the accuracy and stability of liquid addition, is convenient for quick inspection and maintenance, reduces structural errors, and avoids economic losses. It includes a needle tube body, one end of the needle tube body is set as a liquid inlet end, and the other end of the needle tube body is set as a liquid outlet end. The port structure shape of the liquid outlet end is chamfered, and a valve body structure and a positioning structure are provided in the cavity of the liquid outlet end. The valve body structure is movably connected to the liquid outlet end, and the positioning structure is rotatably connected to the needle tube body through the valve body structure. The beneficial effects of the utility model are: the filling machine and its filling needle structure simplify the operating steps; improve the stability and accuracy of filling; improve the strength of structural connection; improve the integrity, operational stability and smoothness of the structure; improve the sealing of the structure; quantify and visualize the operational effectiveness of the structure, facilitate quick inspection and maintenance, reduce structural errors and economic losses.

Description

Technical Field

[0001] The utility model relates to the technical field of filling machines, in particular to a filling needle structure of a filling machine. Background Art

[0002] In the prior art, when the filling equipment is filling, liquid medicine may still remain in the filling needle, and the residual liquid medicine may drip due to its own gravity. The residual liquid medicine may also drip when the filling equipment is swinging or vibrating at high speed, resulting in unnecessary waste of liquid medicine, increased production costs, and affecting the filling of liquid medicine.

[0003] China Patent Authorization Announcement Number: CN 216946177 U, Authorization Announcement Date July 12, 2022, This utility model relates to a drip-proof filling needle, comprising: a needle tube; a receiving cavity for receiving a valve body is provided in the needle tube, the valve body is slidably arranged in the receiving cavity, the valve body comprises a sealing part, the sealing part is sealed and connected with the end of the receiving cavity, a back-suction hole is provided on the sealing part, and an elastic member for resetting the valve body seal is provided in the needle tube. The shortcomings of this technical solution are: 1. The valve body is installed in the upper needle tube, leaving a huge residual space for residual liquid in the lower needle tube, leaving a large possibility of dripping and dripping amount for the residual liquid in the state switching gap before the filling pump stops conveying and back-suction, which affects the accuracy of liquid addition, and in addition to increasing the operation steps of back-suction; 2. The structures in the valve body need to be finely coordinated, but the valve body is placed in the upper needle body. When the structural coordination is wrong or the accuracy is insufficient, it is difficult to immediately discover and maintain, which further affects the accuracy of liquid addition and even leads to serious economic losses.

[0004] In summary: the injection needle has complicated operating steps, affects the accuracy and stability of liquid addition, and is difficult to detect and quickly maintain. Operational errors in the structure can easily cause economic losses. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art in which the operation steps of the filling needle are complicated, the liquid adding accuracy and stability are affected, the operation errors of the structure are difficult to find and maintain in time, and are easy to cause economic losses. The utility model provides a filling needle structure for a filling machine which simplifies the operation, can improve the liquid adding accuracy and stability, is convenient for quick inspection and maintenance, reduces structural errors, and avoids economic losses.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A filling needle structure for a filling machine comprises a needle tube body, one end of the needle tube body is set as a liquid inlet end, the other end of the needle tube body is set as a liquid outlet end, the port structure shape of the liquid outlet end is chamfered, a valve body structure and a positioning structure are arranged in the cavity of the liquid outlet end, the valve body structure is movably connected to the liquid outlet end, and the positioning structure is rotatably connected to the needle tube body through the valve body structure.

[0008] One end of the needle tube body is set as the liquid inlet end and is used for connecting the filling machine body for liquid input. The other end of the needle tube body is a chamfered tube mouth that shrinks inward and is set as the liquid outlet end for liquid output filling. The chamfered port outlet is convenient for liquid concentration. The valve body structure is connected to the liquid outlet end and is used for circulating and stopping the delivery of liquid, so as to control the liquid near the tube mouth. It is not necessary to increase the back suction operation to greatly reduce the residual liquid falling into the bottle or leaking when the delivery is stopped in the needle tube body, so as to simplify the operation and improve the stability and accuracy of controlling the injection amount, and reduce waste. The needle tube body is rotatably connected with the valve body structure to limit and position the valve body structure, so that the valve body structure is more stable. At the same time, the positioning shows the accuracy of the operation of the valve body structure, so as to immediately observe the control effect of the valve body structure, facilitate maintenance, and timely prevent filling errors from causing economic losses. The effect of simplifying operation, improving filling stability and accuracy, improving structural strength, facilitating rapid inspection and maintenance, and reducing structural errors and economic losses is achieved.

[0009] Preferably, the valve body structure includes a movable ring, a fixed ring and a switch plate, the movable ring is slidably connected to the needle tube body, the fixed ring is fixedly connected to the needle tube body, the fixed ring is placed between the movable ring and the switch plate, the switch plate is provided with a connecting rod, one end of the connecting rod is connected to the movable ring, the other end of the connecting rod passes through the fixed ring and is connected to the switch plate, and the switch plate is elastically connected to the movable ring through the connecting rod. In the valve body structure, the movable ring, the fixed ring and the switch plate are arranged in sequence from top to bottom, so that the switch plate is close to the chamfered pipe mouth, the movable ring and the fixed ring are both hollow ring-mounted structures, so that the liquid flows to the switch plate through the hollow, so that the switch plate pulls the movable ring to slide downward in the cavity of the needle tube body under the pressure of the liquid, and then opens the space between the switch plate and the fixed ring to make the liquid flow out from the pipe mouth, the connecting rod enables the movable ring and the switch plate to move vertically to prevent the tilt of the structure from affecting the liquid circulation, and the switch plate is elastically connected to the movable ring through the connecting rod, so that the switch plate is elastically reset after losing the hydraulic pressure, and the liquid is immediately stopped at the pipe mouth to stop filling. The effect of improving structural connection strength, operation smoothness and filling accuracy is achieved.

[0010] Preferably, the needle tube body is provided with a limiting groove, the connecting rod is provided with at least two and arranged in relative positions, the movable ring is slidably connected to the limiting groove, the connecting rod is sleeved with a reset spring, one end of the reset spring is connected to the movable ring, and the other end of the reset spring is connected to the fixed ring. The inner wall of the needle tube body is provided with an annular limiting groove, the movable ring slides up and down in the limiting groove, and at least two are provided on the movable ring and the switch plate in a relative manner to cooperate with the connecting rod position to improve the integrity of the structural linkage. At the same time, the connecting rod is sleeved with the reset spring so that the movable ring can slide up and down stably in the limiting groove following the increase and decrease of pressure. The effect of improving the integrity of the structure, operational stability and fluency is achieved.

[0011] Preferably, the fixing ring is connected with a sealing ring, the sealing ring is provided with through hole 1, the fixing ring is provided with through hole 2, through hole 1 and through hole 2 are arranged relatively in upper and lower positions, and the connecting rod is plugged into through hole 1 and through hole 2. The end face of the fixing ring is connected with a hollow sealing ring, and when the sealing ring and the fixing ring pass through through hole 1 and through hole 2, the connecting rod passes through and guides the movement up and down, so that the switch plate has a sealing ring in the middle when it is attached to the fixing ring, so as to improve the adhesion strength of the switch plate and prevent liquid leakage. The effect of improving the sealing of the structure is achieved.

[0012] Preferably, the positioning structure includes a rotating rod, a push rod and a counterweight. The needle tube body is provided with a rotating hole. The rotating rod is plugged into the rotating hole, the push rod is connected to the rotating rod, one end of the push rod is against the switch plate, and the other end of the push rod is rotatably connected to the counterweight. The port of the rotating rod in the positioning structure is inserted into the rotating hole of the needle tube body, so that the rotating rod can rotate in the cavity of the needle tube body. At the same time, the push rod is connected to the rotating rod and rotates with the rotation of the rotating rod. The push rod is against the center of the switch plate at one end and connected to the counterweight at the other end, so that the switch plate is more stable when closed. At the same time, when the switch plate moves under pressure, the push rod rotates with the rotating rod as the fulcrum. The rotating rod limits the moving distance of the switch plate, and further controls the injection volume. By observing the rotation of the rotating rod through the through hole, the movement of the switch plate can be intuitively observed, so that the structural operation can be visualized, which is convenient for rapid inspection and maintenance, and timely stop loss. The effect of improving structural stability, visualizing liquid control accuracy and structural operation effectiveness, and facilitating rapid inspection and maintenance is achieved.

[0013] Preferably, the end faces of the mandrel are all arc-shaped structures, the counterweight block is provided with a movable groove, the movable groove is connected with a plug rod, the mandrel is provided with a plug hole, and the plug rod is plugged into the plug hole. The end face of the mandrel that abuts against the switch plate is a protruding arc-shaped structure, so that the relative sliding between the switch plate and the mandrel is smooth after the force is applied, so that the liquid can pass smoothly, and the other end of the mandrel extends into the movable groove of the counterweight block, and the plug rod is plugged into the plug hole, so that the counterweight block rotates with the rotation of the mandrel, so as to improve the smoothness of the coordination between the structures. The effect of improving the smoothness of the structural operation is achieved.

[0014] Preferably, the needle tube body is sleeved with a sealing ring, which is placed at the rotating hole, and the end face of the rotating rod is provided with a positioning groove. The sealing ring is sleeved outside the needle tube body and the rotating hole is placed inside the sealing ring to prevent the liquid from flowing out of the rotating hole. At the same time, the end face of the rotating rod displays the state of the rotating rod through the positioning groove, so as to intuitively display the state of the rotating rod in the needle tube body, the state of the switch plate, and then the state of the liquid flow. The effect of improving the sealing of the structure, quantifying and visualizing the effectiveness of the structural operation, and further improving the convenience of inspection is achieved.

[0015] The beneficial effects of the utility model are: the filling machine and its filling needle structure simplify the operating steps; improve the stability and accuracy of filling; improve the structural connection strength; improve the integrity, operational stability and smoothness of the structure; improve the structural sealing; quantify and visualize the operational effectiveness of the structure, facilitate rapid inspection and maintenance, and reduce structural errors and economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 yes Figure 1 Section Figure 1 ;

[0018] Figure 3 yes Figure 1 Section Figure 2 ;

[0019] Figure 4 It is a structural schematic diagram of the rotating rod and the positioning groove.

[0020] In the figure: 1. needle tube body, 2. liquid outlet end, 3. movable ring, 4. fixed ring, 5. switch plate, 6. connecting rod, 7. limiting groove, 8. reset spring, 9. sealing ring, 10. through hole one, 11. through hole two, 12. rotating rod, 13. push rod, 14. counterweight, 15. rotating hole, 16. movable groove, 17. plug rod, 18. plug hole, 19. sealing ring, 20. positioning groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specified, the relative arrangement of the components, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present application. For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" are used in the embodiments to illustrate the relationship between an element or feature shown in the figure and another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or located in other orientations), and the spatial relative description used here can be interpreted accordingly. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, process and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, process and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that similar reference numerals and letters denote similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0025] Embodiment 1:

[0026] like Figure 1 As shown, a filling machine needle filling structure includes a needle tube body 1, one end of the needle tube body 1 is set as a liquid inlet end, and the other end of the needle tube body 1 is set as a liquid outlet end 2, the port structure shape of the liquid outlet end 2 is chamfered, and a valve body structure and a positioning structure are provided in the cavity of the liquid outlet end 2, the valve body structure is movably connected to the liquid outlet end 2, and the positioning structure is rotatably connected to the needle tube body 1 through the valve body structure.

[0027] like Figure 2 As shown, the valve body structure includes a movable ring 3, a fixed ring 4 and a switch plate 5. The movable ring 3 is slidably connected to the needle tube body 1, and the fixed ring 4 is fixedly connected to the needle tube body 1. The fixed ring 4 is placed between the movable ring 3 and the switch plate 5. The switch plate 5 is provided with a connecting rod 6. One end of the connecting rod 6 is connected to the movable ring 3, and the other end of the connecting rod 6 passes through the fixed ring 4 and is connected to the switch plate 5. The switch plate 5 is elastically connected to the movable ring 3 through the connecting rod 6.

[0028] like Figure 2 , 3 As shown, the needle tube body 1 is provided with a limiting groove 7, at least two connecting rods 6 are provided and arranged relatively, the movable ring 3 is slidably connected to the limiting groove 7, the connecting rod 6 is sleeved with a return spring 8, one end of the return spring 8 is connected to the movable ring 3, and the other end of the return spring 8 is connected to the fixed ring 4.

[0029] like Figure 2 , 3 As shown, the fixing ring 4 is connected to the sealing ring 9, the sealing ring 9 is provided with a through hole 10, the fixing ring 4 is provided with a through hole 2 11, the through hole 10 and the through hole 2 11 are arranged in relative upper and lower positions, and the connecting rod 6 is plugged into the through hole 10 and the through hole 2 11.

[0030] like Figure 3 As shown, the positioning structure includes a rotating rod 12, a push rod 13 and a counterweight 14. The needle tube body 1 is provided with a rotating hole 15. The rotating rod 12 is plugged into the rotating hole 15. The push rod 13 is connected to the rotating rod 12. One end of the push rod 13 is against the switch plate 5, and the other end of the push rod 13 is rotatably connected to the counterweight 14.

[0031] like Figure 2 , 3 As shown, the end faces of the top rod 13 are all arc-shaped structures, the counterweight block 14 is provided with a movable groove 16, the movable groove 16 is connected with an insertion rod 17, and the top rod 13 is provided with a socket 18, and the insertion rod 17 is plugged into the socket 18.

[0032] like Figure 3 , 4 As shown, the needle tube body 1 is sleeved with a sealing ring 19 , which is placed at the rotating hole 15 , and a positioning groove 20 is provided on the end surface of the rotating rod 12 .

[0033] like Figure 1-4 As shown: the surface of the movable ring 3 in contact with the limiting groove 7 is in an arc shape to reduce the contact surface and thus reduce friction, making the movable ring 3 move more smoothly. The inner side surface and the upper end surface of the movable ring 3 and the fixed ring 4 are both connected with an arc connection surface to make the liquid delivery smoother.

[0034] The end surface of the switch plate 5 facing the liquid inlet is concave to increase the contact surface with the liquid and increase the force strength.

[0035] The maximum moving distance of the switch plate 5 and the rotating rod 12 are both connected above the chamfer where the liquid outlet end 2 begins to deform, so as to prevent the switch plate 5 from entering the chamfered reduced diameter and blocking the liquid outlet end 2.

[0036] The sealing ring 9 and the sealing ring 19 are made of rubber material, wherein the sealing ring 19 is made of transparent material, so that the positioning groove 20 can be directly observed through the rotating hole 15. The positioning groove 20 is also in a vertical state when the top rod 13 is in a vertical state, so that the rotation of the rotating rod 12 can be observed intuitively.

[0037] During use: during filling, the liquid output of the filling machine flows into the needle tube body 1, and the liquid flows through the movable ring 3, the fixed ring 4 and the sealing ring 9 to overcome the elastic force of the reset spring 8, so that the switch plate 5 leaves the sealing ring 9, and the liquid flows through the gap between the switch plate 5 and the inner wall of the needle tube body 1, and flows out from the chamfered liquid outlet port 2 into the tank body, wherein the switch plate 5 pushes the push rod 13, so that the push rod 13 rotates 90 degrees to stop the switch plate 5 from moving further, and the rotating rod 12 (positioning groove 20) rotates 90 degrees. When the filling liquid injection stops, the switch plate 5 is subjected to the elastic force of the reset spring 8 and is again attached to the reset spring 8, preventing the liquid above the switch plate 5 from leaking and continuing to flow out, and the filling is completed. During use, the rotation angle of the positioning groove 20 is used to observe whether the switch plate 5 in the needle tube body 1 has moved into place, thereby achieving real-time inspection.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filling needle structure for a filling machine, characterized in that: The invention comprises a needle tube body (1), one end of the needle tube body (1) is set as a liquid inlet end, the other end of the needle tube body (1) is set as a liquid outlet end (2), the port structure of the liquid outlet end (2) is in a chamfered shape, a valve body structure and a positioning structure are provided in the cavity of the liquid outlet end (2), the valve body structure is movably connected to the liquid outlet end (2), the positioning structure is rotatably connected to the needle tube body (1) through the valve body structure, the valve body structure comprises a movable ring (3), a fixed ring (4) and a switch plate (5), the movable ring (3) is slidably connected to the needle tube body (1), the fixed ring (4) is fixedly connected to the needle tube body (1), and the fixed ring (4) is placed between the movable ring (3) and the switch plate (5 ), the switch plate (5) is provided with a connecting rod (6), one end of the connecting rod (6) is connected to the movable ring (3), the other end of the connecting rod (6) passes through the fixed ring (4) and is connected to the switch plate (5), the switch plate (5) is elastically connected to the movable ring (3) via the connecting rod (6), the positioning structure comprises a rotating rod (12), a push rod (13) and a counterweight (14), the needle tube body (1) is provided with a rotating hole (15), the rotating rod (12) is plugged into the rotating hole (15), the push rod (13) is connected to the rotating rod (12), one end of the push rod (13) abuts against the switch plate (5), and the other end of the push rod (13) is rotatably connected to the counterweight (14).

2. A filling needle structure for a filling machine according to claim 1, characterized in that: The needle tube body (1) is provided with a limiting groove (7), at least two connecting rods (6) are provided and arranged in opposite positions, the movable ring (3) is slidably connected to the limiting groove (7), the connecting rod (6) is sleeved with a return spring (8), one end of the return spring (8) is connected to the movable ring (3), and the other end of the return spring (8) is connected to the fixed ring (4).

3. A filling needle structure for a filling machine according to claim 2, characterized in that: The fixing ring (4) is connected to a sealing ring (9), the sealing ring (9) is provided with a first through hole (10), the fixing ring (4) is provided with a second through hole (11), the first through hole (10) and the second through hole (11) are arranged in relative vertical positions, and the connecting rod (6) is plugged into the first through hole (10) and the second through hole (11).

4. A filling needle structure for a filling machine according to claim 3, characterized in that: The end faces of the push rod (13) are all arc-shaped structures, the counterweight block (14) is provided with a movable groove (16), the movable groove (16) is connected to an insertion rod (17), the push rod (13) is provided with a plug hole (18), and the plug rod (17) is plugged into the plug hole (18).

5. A filling needle structure for a filling machine according to claim 4, characterized in that: The needle tube body (1) is sleeved with a sealing ring (19), the sealing ring (19) is placed at the rotating hole (15), and the end surface of the rotating rod (12) is provided with a positioning groove (20).

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