Torsion compensation mechanism of rotating rod labeling machine

Abstract

The utility model relates to a torsion compensation mechanism of a rotating rod labeling machine in the technical field of vaccine packaging. The torsion compensation mechanism comprises a bottle rotating rubber wheel, a rotating sleeve, a rotating shaft, a rotating shaft center, a fixing piece, a power assembly, a coupler, a tension spring and a limiting piece, the bottle rotating rubber wheel is arranged at the upper end of the rotating shaft; the lower end of the rotating shaft and the lower end of the rotating sleeve are coaxially arranged on the upper surface of the fixing piece, the lower end of the rotating shaft is connected with the power assembly through a coupler, the power assembly is fixed to the lower end of the fixing piece, and the tension spring is fixed to the side face of the fixing piece. One end of the limiting piece is fixed on the rod screwing device, and the other end of the limiting piece is in contact with the upper section of the rotating shaft. According to the utility model, a torsion compensation station is added after a product is assembled, so that secondary screwing of the injector is realized, and the injector can be ensured to be screwed in place.

Description

Technical Field

[0001] The utility model relates to the technical field of vaccine packaging, in particular to a torsion compensation mechanism of a rotary rod labeling machine. 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 often has a specified quantity and number, and product scrapping is generally not allowed. Therefore, in order to ensure that vaccine syringes are not scrapped, the torque of the assembly device on most production lines cannot be too large. However, the problem caused by too small a rotational force is that some products will be under-rotated, that is, not assembled properly.

[0004] In order to solve the above problems, the utility model proposes a technical solution, which realizes secondary screwing of the syringe by adding a torque compensation station after the product is assembled, thereby ensuring that the syringe can be screwed into place. Utility Model Content

[0005] In order to solve the above problems, the present invention discloses a torque compensation mechanism for a rotary rod labeling machine. The technical solution of the present invention is implemented as follows:

[0006] A torque compensation mechanism for a rotary rod labeling machine, comprising a rotating bottle rubber wheel, a rotating sleeve, a rotating shaft, a rotating shaft center, a fixing part, a power component, a coupling, a tension spring and a limiter;

[0007] The rotating sleeve is mounted on the rotating shaft, and the rotating bottle rubber wheel is arranged on the upper end of the rotating shaft;

[0008] The lower ends of the rotating shaft and the rotating sleeve are coaxially arranged on the upper surface of the fixing member, the lower end of the rotating shaft is connected to the power assembly through the coupling, the power assembly is fixed to the lower end of the fixing member, the tension spring is fixed to the side of the fixing member, the center of the rotating shaft is sleeved on the rotating sleeve, and the center of the rotating shaft includes a rotating seat and a support shaft;

[0009] The support shaft is fixed on the rotating seat and passes through the rotating shaft;

[0010] One end of the limiting member is fixed on the rod twisting device, and the other end contacts the upper section of the rotating shaft.

[0011] The rod-twisting device referred to in the present invention refers to a device that uses a belt to drive the needle cylinder to rotate so as to tighten the push rod.

[0012] Preferably, the limiting member is a limiting screw.

[0013] Preferably, the power assembly includes a servo motor.

[0014] Preferably, it also includes a torque sensor and a pressure display device;

[0015] The torque sensor is arranged on one side of the support shaft;

[0016] The torque sensor is connected to the pressure display device via wired or wireless communication.

[0017] Preferably, the bottle roller includes a hard hub and a soft rubber wheel;

[0018] The soft rubber wheel is sleeved on the hard wheel hub;

[0019] The hard hub is fixedly connected to the rotating shaft.

[0020] Preferably, the soft rubber wheel is made of rubber, and the hard wheel hub is made of aluminum alloy.

[0021] Preferably, a positioning member is further included; the positioning member is used to fix one end of the tension spring.

[0022] The utility model can compensate for the torque of syringes whose rotating rods have not yet rotated to their full potential, thereby fully ensuring the qualified rate of the rotating rods. At the same time, the compensation degree of the torque compensation device is controlled by the tension spring and the bottle roller, so that the assembled syringes will not be over-rotated due to passing through the torque compensation station. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] 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.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0026] Figure 2 for Figure 1 The cross-sectional structure diagram of the BB surface is shown.

[0027] In the above drawings, the figure numbers represent:

[0028] 1. Bottle roller;

[0029] 2. Rotate sleeve;

[0030] 3. Rotating shaft;

[0031] 4. Support axis;

[0032] 5. Rotating seat;

[0033] 6. Coupling;

[0034] 7. Servo motor;

[0035] 8. Extension spring;

[0036] 9. Limit screw;

[0037] 10. Fixing parts;

[0038] 11. Positioning piece. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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%.

[0045] 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.

[0046] 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 often has a specified quantity and number, and product scrapping is generally not allowed. Therefore, in order to ensure that vaccine syringes are not scrapped, the torque of the assembly device on most production lines cannot be too large. However, the problem caused by too small a rotational force is that some products will be under-rotated, that is, not assembled properly.

[0047] In order to solve the above problems, the utility model proposes a technical solution, which realizes secondary screwing of the syringe by adding a torque compensation station after the product is assembled, thereby ensuring that the syringe can be screwed into place.

[0048] The technical solution of the utility model is achieved as follows: a torque compensation mechanism of a rotary rod labeling machine, comprising a rotary bottle rubber wheel, a rotary sleeve, a rotary shaft, a rotary shaft center, a fixing part, a power assembly, a coupling, a tension spring and a limiter; the rotary sleeve is sleeved on the rotary shaft, and the rotary bottle rubber wheel is arranged at the upper end of the rotary shaft; the lower ends of the rotary shaft and the rotary sleeve are coaxially arranged on the upper surface of the fixing part, the lower end of the rotary shaft is connected to the power assembly through the coupling, the power assembly is fixed to the lower end of the fixing part, the tension spring is fixed to the side of the fixing part, the rotary shaft center is sleeved on the rotary sleeve, and the rotary shaft center includes a rotating seat and a support shaft; the support shaft is fixed on the rotating seat and passes through the rotary shaft, one end of the limiter is fixed to the twisting rod device, and the other end contacts the upper section of the rotary shaft.

[0049] The present invention uses a power assembly to provide torque compensation power to the torque compensation mechanism of a rotary rod labeling machine. The assembly is connected to the rotating shaft via a coupling to achieve torque transmission. When the power assembly outputs torque, the coupling transmits the torque to the rotating shaft. The torque compensation mechanism then rotates about the center of the rotating shaft. During rotation, a rotating rubber roller located at the upper end of the rotating shaft rotates along with it. When a syringe passing through the rotating roller from the assembly station to the torque compensation station passes through the rotating roller, it slightly presses against the roller. Due to the constant rotation of the rotating roller and its inherent material, syringes passing through the torque compensation station generate relative friction with the roller. This can cause syringes that are not fully tightened to continue to be tightened by the roller. When the preset tightening value is reached, the tension of the tension spring and the positioning of the roller relative to the stopper prevent the fully tightened syringe from continuing to tighten in the torque compensation station, thereby preventing overtightening of the syringe.

[0050] The utility model adjusts the torque by adjusting the tension of the tension spring. According to the injection specifications, the tension of the tension spring and the length of the limiter can be adjusted to adjust the distance between the bottle rotating rubber wheel and the screw rod device, realizing the torque setting for torque compensation of different specifications of syringes, thereby improving the adaptability of the torque compensation mechanism of the screw rod labeling machine.

[0051] In the present invention, the limit block is used to adjust the distance between the torque compensation mechanism and the screw rod device of the rotary rod labeler. One of its functions is to prevent the bottle-turning rubber wheel above the torque compensation mechanism of the rotary rod labeler from being too close or too far away from the screw rod device. If they are too close, the syringe will be squeezed too hard when passing between the bottle-turning rubber wheel and the screw rod device, resulting in bottle breakage. If they are too far away, the friction between the syringe and the bottle-turning rubber wheel will be reduced, resulting in the inability to compact the label.

[0052] In some preferred embodiments, the limiting member is a limiting screw.

[0053] In some embodiments, the power assembly includes a servo motor.

[0054] Servo motors can achieve very precise positioning and motion control, with high-precision closed-loop control. They can overcome the problem of stepper motors losing steps, and their output torque and speed are stable and not easily affected by the working environment. This allows for more stable output of appropriate torque and prevents over-rotation of the product.

[0055] In some embodiments, the bottle roller includes a hard hub and a soft rubber wheel;

[0056] The soft rubber wheel is sleeved on the hard wheel hub;

[0057] The hard hub is fixedly connected to the rotating shaft.

[0058] Since the wheel hub needs to be fixedly connected to the hard rotating shaft and rotate for a long time, a wear-resistant hard structure has a longer service life and is not easily damaged. The rubber wheel needs to contact the syringe, so a soft material is preferred. However, the soft structure may also wear due to long-term use. Therefore, setting the soft rubber wheel to be detachable can effectively avoid the problem of insufficient torque compensation accuracy caused by wear.

[0059] In some embodiments, the soft rubber wheel is made of rubber, and the hard wheel hub is made of aluminum alloy.

[0060] In some embodiments, a positioning member is further included; the positioning member is used to fix one end of the tension spring.

[0061] 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.

[0062] Example

[0063] In a specific embodiment, Figure 1 and Figure 2 As shown, a torque compensation mechanism of a rotary rod labeling machine includes a rotary bottle rubber wheel 1, a rotary sleeve 2, a rotating shaft 3, a rotating shaft center, a fixing part 10, a servo motor 7, a coupling 6 and a tension spring 8.

[0064] The rotating sleeve 2 is sleeved on the rotating shaft 3 , and the rotating bottle rubber wheel 1 is arranged on the upper end of the rotating shaft 3 .

[0065] The rotating shaft 3 and the rotating sleeve 2 are coaxially arranged on the upper surface of the fixed part 10. The lower end of the rotating shaft 3 is connected to the servo motor 7 through the coupling 6. The servo motor 7 is fixed to the lower end of the fixed part 10. The tension spring 8 is fixed to the side of the fixed part 10. The center of the rotating shaft is sleeved on the rotating sleeve.

[0066] The center of the rotating shaft includes a rotating seat 5 and a support shaft 4.

[0067] The support shaft 4 is fixed on the rotating base 5 and passes through the rotating shaft 3.

[0068] This embodiment further includes a limit screw 9 ; the limit screw 9 is fixed to the upper section of the rotating shaft 3 .

[0069] This embodiment further includes a positioning member 11 , which is used to fix one end of the tension spring 8 .

[0070] 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 torque compensation mechanism for a rotary rod labeling machine, characterized in that: It includes a rotating bottle rubber wheel, a rotating sleeve, a rotating shaft, a rotating shaft center, a fixing part, a power component, a coupling, a tension spring and a limiter; The rotating sleeve is mounted on the rotating shaft, and the rotating bottle rubber wheel is arranged on the upper end of the rotating shaft; The lower ends of the rotating shaft and the rotating sleeve are coaxially arranged on the upper surface of the fixing member, the lower end of the rotating shaft is connected to the power assembly through the coupling, the power assembly is fixed to the lower end of the fixing member, the tension spring is fixed to the side of the fixing member, the center of the rotating shaft is sleeved on the rotating sleeve, and the center of the rotating shaft includes a rotating seat and a support shaft; The support shaft is fixed on the rotating seat and passes through the rotating shaft; One end of the limiting member is fixed on the rod twisting device, and the other end contacts the upper section of the rotating shaft.

2. The torque compensation mechanism of the rotary rod labeling machine according to claim 1, characterized in that: The limiting member is a limiting screw.

3. The torque compensation mechanism of the rotary rod labeling machine according to claim 1, characterized in that: The power assembly includes a servo motor.

4. The torque compensation mechanism of the rotary rod labeling machine according to claim 1, characterized in that: The bottle roller includes a hard hub and a soft rubber wheel; The soft rubber wheel is sleeved on the hard wheel hub; The hard hub is fixedly connected to the rotating shaft.

5. The torque compensation mechanism of the rotary rod labeling machine according to claim 4, characterized in that: The material of the soft rubber wheel is rubber, and the material of the hard wheel hub is aluminum alloy.

6. The torque compensation mechanism of the rotary rod labeling machine according to claim 1, characterized in that: It also includes a positioning piece; the positioning piece is used to fix one end of the tension spring.

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