Tension-adjustable rotating rod mechanism of rotating rod labeling machine

Abstract

The utility model relates to a tension-adjustable rotating rod mechanism of a rotating rod labeling machine in the technical field of vaccine packaging. The tension-adjustable rotating rod mechanism comprises a synchronous belt, an elastic tensioning structure, a tension and pressure sensor, a fan-shaped plate adjusting wheel, a power assembly, a fan-shaped plate, a driving wheel and a driven wheel, the synchronous belt is wound on the driving wheel, the driven wheel and the fan-shaped plate adjusting wheel; the power assembly is connected with the first end of the elastic tensioning structure, the second end of the elastic tensioning structure is fixed to the sector plate, the sector plate is fixed through the sector plate adjusting wheel, and the tension and pressure sensor is fixed to the joint of the elastic tensioning structure and the power assembly. According to the utility model, the tensioning degree of the synchronous belt can be adjusted in real time, so that the torsion of the injector during assembly is changed, the influence on the assembly caused by factors such as abrasion or fatigue of the synchronous belt is avoided, and meanwhile, the assembly efficiency is improved by adjusting the tensioning degree of the synchronous belt. The synchronous belt and the glass outer surface of the injector can form an over-rotation slipping effect, and it can be effectively guaranteed that assembly is not over-rotated.

Description

Technical Field

[0001] The utility model relates to the technical field of vaccine packaging, in particular to a rotary rod mechanism of a rotary rod labeling machine with adjustable tension. Background Art

[0002] An injectable is a pharmaceutical preparation that comes pre-filled with an injectable solution into a syringe. When used, the packaging can be removed, the syringe can be taken out, and the injection can be performed. One step in the production of an injectable involves delivering a syringe pre-filled with the injectable solution but without a plunger to a separate location via a delivery device. The plunger is then placed into the syringe, and a screwing mechanism then uses a combination of rotation and pressure to force the plunger into the syringe. Vaccines are packaged in this manner.

[0003] In the current disposable vaccine syringe packaging production line, due to the strict packaging requirements of disposable syringes, if the torque is too large, the packaging will be over-rotated, and the syringe will be scrapped and unusable. Each production batch of vaccine packaging usually has a specified quantity and number, and product scrapping is generally not allowed. Therefore, in order to ensure that the vaccine syringe is not scrapped, the torque of the screw rod assembly device must be very precise.

[0004] However, in the prior art, since syringe assembly often takes a long time and involves multiple batches, under such working conditions, the structure used to provide assembly torque, such as the belt, often wears out or becomes fatigued, which causes the torque during the assembly of subsequent syringes to change, resulting in the syringe not being screwed into place.

[0005] In order to solve the above problems, it is necessary to adjust the torque. However, the torque assembly mechanism currently on the market has a complex structure, the steps for adjusting the torque are relatively cumbersome, and it is impossible to adjust accurately.

[0006] In order to solve the above problems, the present invention proposes a technical solution that can quickly adjust the torque during screwing and assembly. Utility Model Content

[0007] In order to solve the above problems, the present invention discloses a rotary rod mechanism with adjustable tension for a rotary rod labeling machine. The technical solution of the present invention is implemented as follows:

[0008] A rotary rod mechanism with adjustable tension for a rotary rod labeling machine, comprising a synchronous belt, an elastic tensioning structure, a tension and pressure sensor, a sector plate adjusting wheel, a power assembly, a sector plate, a driving wheel and a driven wheel;

[0009] The synchronous belt is wound around the driving wheel, the driven wheel and the fan-shaped plate adjusting wheel;

[0010] The power assembly is connected to the first end of the elastic tensioning structure, the second end of the elastic tensioning structure is fixed to the fan plate, the fan plate is fixed by the fan plate adjusting wheel, and the tension pressure sensor is fixed at the connection between the elastic tensioning structure and the power assembly.

[0011] Preferably, the power assembly includes a servo motor, a lead screw and a linear guide rail;

[0012] The output shaft of the servo motor is connected to the lead screw, the lead screw is connected to the linear guide rail, and the linear guide rail is connected to the first end of the elastic tensioning structure.

[0013] Preferably, it further comprises a second power assembly;

[0014] The output shaft of the second power assembly is connected to the driving wheel.

[0015] Preferably, the tension and pressure sensor is a digital sensor.

[0016] Preferably, it further comprises a display device;

[0017] The tension and pressure sensor is wirelessly connected to the display device.

[0018] Preferably, the elastic tensioning structure is a tension spring.

[0019] The utility model can adjust the tension of the synchronous belt in real time, thereby changing the torque of the syringe during assembly, ensuring that the assembly will not be affected by factors such as wear or fatigue of the synchronous belt. At the same time, the utility model can make the synchronous belt and the glass outer surface of the syringe form an over-rotation slipping effect by adjusting the tension of the synchronous belt, which can effectively ensure that the assembly does not over-rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0022] Figure 1 This is a top view of the structure of an embodiment of the utility model (without the upper cover);

[0023] Figure 2 A bottom view of the structure of an embodiment of the utility model;

[0024] Figure 3 This is an axial view of an embodiment of the present utility model;

[0025] Figure 4 This is a state structure diagram of the syringe in a specific application of the embodiment of the utility model.

[0026] In the above drawings, the figure numbers represent:

[0027] 1. Putting;

[0028] 2. Syringe;

[0029] 3. Synchronous belt;

[0030] 4. Extension spring;

[0031] 5. Rubber stopper;

[0032] 6. Pull pressure sensor;

[0033] 7. Sector plate adjusting wheel;

[0034] 8. Servo motor;

[0035] 9, screw rod;

[0036] 10. Linear guide rail;

[0037] 11. Sector plate;

[0038] 12, driving wheel;

[0039] 13, driven wheel;

[0040] 14, second servo motor;

[0041] 15, upper cover;

[0042] 16. Twisting rod device. DETAILED DESCRIPTION

[0043] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specific implementation methods are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the description and claims of the present invention and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0045] In the description of the specific embodiments of this utility model, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly indicate the number, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of this utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0046] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments.

[0047] In the description of the embodiments of the present invention, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present invention generally indicates that the related objects are in an "or" relationship.

[0048] Throughout this disclosure, numerical values ​​represent approximate measures or limits of ranges to encompass minor deviations from a given value, as well as embodiments having approximately the stated value and embodiments having the exact value stated. Except for the working examples provided at the end of the detailed description, all numerical values ​​for parameters (e.g., amounts, or conditions) in this specification (including the appended claims) should be understood as being modified in all instances by the term "about," regardless of whether "about" actually appears before the numerical value. "About" indicates that the stated numerical value allows for some minor imprecision (somewhat close to the exact value of the stated value; approximately or reasonably close to the stated value; nearly). If the imprecision provided by "about" is not otherwise understood in this ordinary sense in the art, "about," as used herein, at least indicates the variation that can occur due to ordinary methods of measuring and using such parameters. For example, "about" may encompass variations of less than or equal to 5%, optionally less than or equal to 4%, optionally less than or equal to 3%, optionally less than or equal to 2%, optionally less than or equal to 1%, optionally less than or equal to 0.5%, and in certain aspects, optionally less than or equal to 0.1%.

[0049] Additionally, disclosure of ranges includes disclosure of all values ​​within the entire range and further divided ranges, including endpoints and sub-ranges stated for such ranges.

[0050] Of course, in the prior art, since syringe assembly often takes a long time and involves multiple batches, under such working conditions, the structure used to provide assembly torque, such as the belt, often wears out or becomes fatigued, which causes the torque during the assembly of subsequent syringes to change, resulting in the syringe not being able to be screwed into place.

[0051] In order to solve the above problems, it is necessary to adjust the torque. However, the torque assembly mechanism currently on the market has a complex structure, the steps for adjusting the torque are relatively cumbersome, and it is impossible to adjust accurately.

[0052] In order to solve the above problems, the present invention proposes a technical solution that can quickly adjust the torque during screwing and assembly.

[0053] The technical solution of the utility model is achieved as follows: a rotary rod mechanism with adjustable tension for a rotary rod labeling machine, comprising a synchronous belt, an elastic tensioning structure, a tension and pressure sensor, a sector plate adjusting wheel, a power assembly, a sector plate, a driving wheel and a driven wheel; the synchronous belt is wound around the driving wheel, the driven wheel and the sector plate adjusting wheel; the power assembly is connected to a first end of the elastic tensioning structure, a second end of the elastic tensioning structure is fixed to the sector plate, the sector plate is fixed by the sector plate adjusting wheel, and the tension and pressure sensor is fixed to the connection between the elastic tensioning structure and the power assembly.

[0054] This utility model adjusts the friction between the glass outer surface of the syringe and the timing belt by adjusting the tension of the timing belt, thereby adjusting the torque during assembly. This ensures that the syringe can be rotated into position during assembly. Furthermore, the tension of the timing belt is adjusted so that when the syringe is in position, there is slippage between the glass outer surface and the timing belt, thus preventing over-rotation.

[0055] In addition, due to the material of the synchronous belt, fatigue may occur to the synchronous belt after long-term use, which will cause torque changes. The utility model adopts a power component and an elastic tensioning structure to adjust the tension of the synchronous belt.

[0056] When the belt needs to be tightened, the power component drives the first end of the elastic tensioning structure to move away from the fan plate, causing the fan plate to swing, and then the position of the fan plate adjusting wheel also moves accordingly. The overall length of the synchronous belt wrapped around the driving wheel, driven wheel and fan plate adjusting wheel is stretched as the position of the fan plate adjusting wheel changes.

[0057] When the belt needs to be loosened, the power component drives the first end of the elastic tensioning structure to move away from the sector plate, thereby reducing the relative tension between the sector plate adjusting wheel and the elastic tensioning structure and reducing the tension of the synchronous belt.

[0058] In some embodiments, the power assembly includes a servo motor, a lead screw and a linear guide rail; the output shaft of the servo motor is connected to the lead screw, the lead screw is connected to the linear guide rail, and the linear guide rail is connected to the first end of the elastic tensioning structure.

[0059] The utility model adopts a servo motor combined with a screw rod and a linear guide rail to adjust the tension of the synchronous belt at any time. The specific adjustment process is: the servo motor drives the screw rod, which slides along the linear guide rail to adjust the length of the tension spring.

[0060] In some embodiments, further comprising a second power assembly;

[0061] The output shaft of the second power assembly is connected to the driving wheel.

[0062] The function of the second power assembly is to provide power for the rotation of the synchronous belt.

[0063] The second power assembly drives the driving wheel to rotate, drives the synchronous belt to rotate, and then drives the driven wheel to rotate.

[0064] The rotation direction of the synchronous belt is opposite to that of the twisting rod device.

[0065] In some embodiments, the tension and pressure sensors are digital sensors.

[0066] In some preferred embodiments, a display device is further included;

[0067] The tension and pressure sensor is wirelessly connected to the display device.

[0068] The utility model detects the tension of the tension spring in real time through the tension pressure sensor, thereby judging the tension degree of the synchronous belt, and transmits the tension information to the display device for real-time detection by the staff.

[0069] In some embodiments, the elastic tensioning structure is a tension spring.

[0070] The following examples will be used to more specifically describe the embodiments of the present invention. It should be noted that the embodiments of the present invention are not limited to these examples.

[0071] Example

[0072] In a specific embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, a rotary rod mechanism with adjustable tension for a rotary rod labeling machine includes a synchronous belt 3, a tension spring 4, a tension pressure sensor 6, a sector plate adjustment wheel 7, a servo motor 8, a screw 9, a linear guide 10, a sector plate 11, a driving wheel 12, a driven wheel 13, a second servo motor 14, and a display device;

[0073] The synchronous belt 3 is wound around the driving wheel 12, the driven wheel 13 and the sector plate adjusting wheel 7;

[0074] The output shaft of the servo motor 8 is connected to the lead screw, the lead screw is connected to the linear guide 10, the linear guide 10 is connected to the first end of the tension spring 4, the second end of the tension spring 4 is fixed on the fan plate 11, the fan plate 11 is fixed by the fan plate adjusting wheel 7, the tension pressure sensor 6 is fixed at the connection between the tension spring 4 and the linear guide 10, and the output shaft of the second servo motor 14 is connected to the driving wheel 12.

[0075] The tension and pressure sensor 6 is a digital sensor.

[0076] The tension and pressure sensor 6 is wirelessly connected to the display device.

[0077] In this embodiment, the upper cover 15 is used to hide components such as the synchronous belt 3, the driving pulley 12, and the sector plate 11, providing dustproof and protective functions.

[0078] like Figure 4 As shown, in specific applications, the rotating rod mechanism screws the thread of the push rod 1 into the syringe 2. In this embodiment, the syringe 2 rotates, and the push rod 1 is fixed in one direction and does not rotate. It is screwed in with the same rotation direction as the thread of the push rod 1. According to the different number of turns of the thread, the corresponding number of turns can be digitally set.

[0079] The screwing device 16 sends the syringe 2 and the push rod 1 to the assembly station. The syringe 2 rotates and the synchronous belt 3 contacts the glass surface of the syringe 2, generating friction and forming a torque to screw the push rod 1 in. The friction depends on the tension of the tension spring 4 that tightens the synchronous belt 3. The thread meshing and clearance between the push rod 1 and the rubber plug 5 in the syringe 2 of different manufacturers are different, so the tightening torque is different. Therefore, during production, in order to ensure that it does not overrotate, the tension of the tension spring 4 is adjusted so that the synchronous belt 3 and the glass surface of the syringe 2 are tightened to avoid overpressure and slipping, which can effectively ensure that it does not overrotate.

[0080] The tension of the tension spring 4 is adjusted by being equipped with a digital tension and pressure sensor 6, which can be displayed and adjusted on a display device.

[0081] In this embodiment, the synchronous belt 3 is flexible and is tensioned by the tension spring 4, always close to the circumference of each roller, surrounding the needle cylinder 2. Due to the effect of friction, the contact can always be guaranteed, and the rotary rod can be rotated with a controllable number of turns.

[0082] The automatic tensioning of the synchronous belt 3 is achieved by the swinging tensioning of the sector plate regulating wheel 7, which has good mechanical properties and high efficiency.

[0083] The tension of the assembly is adjusted by the length of the tension spring 4, which is adjusted by the servo motor 8 rotating the screw rod so that the screw rod slides along the linear guide rail 10 to adjust the length of the tension spring 4.

[0084] It should be pointed out that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary rod mechanism with adjustable tension for a rotary rod labeling machine, characterized in that: It includes a synchronous belt, an elastic tensioning structure, a tension and pressure sensor, a sector plate adjusting wheel, a power assembly, a sector plate, a driving wheel and a driven wheel; The synchronous belt is wound around the driving wheel, the driven wheel and the fan-shaped plate adjusting wheel; The power assembly is connected to the first end of the elastic tensioning structure, the second end of the elastic tensioning structure is fixed to the fan plate, the fan plate is fixed by the fan plate adjusting wheel, and the tension pressure sensor is fixed at the connection between the elastic tensioning structure and the power assembly.

2. The tension-adjustable rotary rod mechanism of the rotary rod labeling machine according to claim 1, characterized in that: The power assembly includes a servo motor, a lead screw and a linear guide rail; The output shaft of the servo motor is connected to the lead screw, the lead screw is connected to the linear guide rail, and the linear guide rail is connected to the first end of the elastic tensioning structure.

3. The tension-adjustable rotary rod mechanism of the rotary rod labeling machine according to claim 1, characterized in that: Also included is a second power assembly; The output shaft of the second power assembly is connected to the driving wheel.

4. The tension-adjustable rotary rod mechanism of the rotary rod labeling machine according to claim 1, characterized in that: The tension and pressure sensor is a digital sensor.

5. The tension-adjustable rotary rod mechanism of the rotary rod labeling machine according to claim 4, characterized in that: Also included is a display device; The tension and pressure sensor is wirelessly connected to the display device.

6. The tension-adjustable rotary rod mechanism of the rotary rod labeling machine according to claim 1, characterized in that: The elastic tensioning structure is a tension spring.

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