Clamping jaw mechanism capable of being opened and closed in conjugate mode of rotating rod labeling machine

Abstract

The utility model relates to a clamping jaw mechanism capable of being opened and closed in a conjugate manner for a rotating rod labeling machine in the technical field of vaccine packaging. The clamping jaw mechanism comprises a fixed seat, a torsion spring assembly and a conjugate clamping jaw assembly, the torsional spring assembly is at least partially arranged on the upper end face of the fixing base. The conjugate clamping jaw assembly is arranged on the lower end face of the fixing base. The conjugate clamping jaw assembly comprises a driving clamping jaw, a driven clamping jaw, a cam roller and a roller groove; the roller groove is formed in the tail end of the driven clamping jaw; the cam roller is arranged at the tail end of the driving clamping jaw and penetrates through the roller groove; clamping teeth are arranged on the side, close to the driven clamping jaw, of the driving clamping jaw, and a push rod notch is formed in the side, close to the driving clamping jaw, of the driven clamping jaw; shaft holes connected with the torsion spring assembly are formed in the driving clamping jaw and the driven clamping jaw. The stability of an injector in the assembling process is guaranteed through the clamping jaws capable of being opened and closed in a conjugate mode, the clamping teeth on the driving clamping jaw have the function of preventing bidirectional rotation, thread screwing in the assembling process is facilitated, the structure is simple, opening and closing are gapless, and the assembling precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of vaccine packaging, and particularly relates to a jaw mechanism capable of conjugate opening and closing of a rotary rod labeling machine. Background Art

[0002] An injection is a pharmaceutical preparation in which an injection solution is pre-filled into a syringe. When in use, the packaging can be directly removed, and the syringe can be taken out for injection. One production link of the injection is to send the syringe pre-filled with the injection solution but without a plunger and the plunger to a place respectively through a conveying device, then put the plunger into the syringe, and then install the plunger into the syringe in a manner combining rotation and pressure through a device for screwing the plunger. Vaccine packaging is in this form.

[0003] The current mainstream form of syringe packaging is an assembly process that combines a belt and a dial center. By rotating the dial center, the plunger and the syringe barrel are driven to reach the assembly station, and the friction between the belt and the glass syringe barrel forms a torsional force, thereby realizing the relative rotation of the plunger and the syringe barrel until the end of the plunger is screwed into the rubber stopper. However, this assembly method has certain problems. Since the plunger will receive the frictional force generated when the syringe barrel rotates relative to it when being screwed into the syringe barrel, the plunger is likely to rotate along with the syringe barrel during the assembly process, and the problem that the plunger is not screwed in place will occur after the assembly is completed.

[0004] To solve the above problems, the utility model proposes a technical solution, which solves the problem that the plunger and the syringe barrel rotate relative to each other in the traditional assembly process. Content of the Utility Model

[0005] To solve the above problems, a jaw mechanism capable of conjugate opening and closing of a rotary rod labeling machine is disclosed in the utility model. The mechanism realizes the stability of the syringe during assembly through the jaws capable of conjugate opening and closing. The teeth on the active jaw have the function of preventing bidirectional rotation, which helps to tighten the thread during assembly. The structure is simple, there is no gap during opening and closing, and the assembly accuracy is high. The technical solution of the utility model is implemented as follows:

[0006] A jaw mechanism capable of conjugate opening and closing of a rotary rod labeling machine includes a fixed seat, a torsion spring assembly, and a conjugate jaw assembly;

[0007] At least part of the torsion spring assembly is arranged on the upper end surface of the fixed seat, and the conjugate jaw assembly is arranged on the lower end surface of the fixed seat;

[0008] The conjugate jaw assembly includes an active jaw, a passive jaw, a cam roller, and a roller groove;

[0009] The roller groove is arranged at the tail end of the passive jaw; the cam roller is arranged at the tail end of the active jaw and passes through the roller groove;

[0010] The active jaw and the passive jaw are connected by the cam roller;

[0011] On one side of the active jaw close to the passive jaw, there are engaging teeth, and on one side of the passive jaw close to the active jaw, there is a push rod notch;

[0012] The active jaw and the passive jaw are provided with shaft holes connected to the torsion spring assembly.

[0013] Preferably, the roller groove and the passive jaw are of an integral structure.

[0014] Preferably, the cam roller and the active jaw are integrally formed.

[0015] Preferably, the torsion spring assembly includes a torsion spring, a bearing roller, an active shaft and a passive shaft;

[0016] The torsion spring is fixedly connected to the lower end of the bearing roller, and the torsion spring is sleeved on the active shaft;

[0017] The active shaft passes through the fixed seat and is fixedly connected to the active jaw;

[0018] The passive shaft passes through the fixed seat and is fixedly connected to the passive jaw.

[0019] The utility model ensures the stability of the syringe during assembly through the conjugately openable and closable jaws. The engaging teeth on the active jaw have the function of preventing bidirectional rotation, which helps to tighten the thread during assembly. The structure is simple, there is no gap during opening and closing, and the assembly precision is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only one embodiment of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Among them, the same 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 the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0022] Figure 1 It is a side view of the structure of an embodiment of a conjugately openable and closable jaw mechanism of a screw rod labeling machine;

[0023] Figure 2 The top view of the jaw assembly in an embodiment of the jaw mechanism that can conjugate and open / close of a rotary rod labeling machine;

[0024] Figure 3 The axial view of the structure of an embodiment of the jaw mechanism that can conjugate and open / close of a rotary rod labeling machine;

[0025] Figure 4 For Figure 3 The schematic diagram of the structure of the shown embodiment after removing the fixed seat.

[0026] In the above-mentioned drawings, each figure number mark respectively represents:

[0027] 1, active jaw;

[0028] 2, passive jaw;

[0029] 3, torsion spring assembly;

[0030] 3-1, torsion spring;

[0031] 3-2, bearing roller;

[0032] 3-3, active shaft;

[0033] 3-4, passive shaft;

[0034] 4, fixed seat. Detailed implementation manners

[0035] Next, in combination with the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs; the terms used in the detailed implementation manners are only for the purpose of describing specific embodiments, and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the description of the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the detailed implementation manners of the present invention, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, "a plurality of" means more than two, unless otherwise specifically and clearly defined.

[0038] Reference to "embodiment" in the present utility model means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present utility model. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in the present utility model may be combined with other embodiments.

[0039] In the description of the embodiments of the present utility model, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present utility model generally represents an "or" relationship between the associated objects before and after.

[0040] Throughout the present utility model, numerical values represent approximate measures or limits of ranges to cover minor deviations from given values as well as embodiments having approximately the mentioned values and embodiments having the exact values mentioned. Except for the working examples provided at the end of the specific implementation, all numerical values of parameters (such as quantities or conditions) in this specification (including the appended claims) should be understood to be modified by the term "about" in all cases, regardless of whether "about" actually appears before the numerical value. "About" indicates that the stated numerical value allows for some minor inaccuracies (close to the exact value of the value to some extent; approximately or reasonably close to the value; almost). If the inaccuracy provided by "about" is not otherwise understood in this ordinary sense in the art, then "about" as used in the present utility model at least indicates variations that can be produced by ordinary methods of measuring and using such parameters. For example, "about" may include variations 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 some aspects, optionally less than or equal to 0.1%.

[0041] In addition, the disclosure of ranges includes the disclosure of all values within the entire range and further divided ranges, including the endpoints and sub-ranges given for these ranges.

[0042] The mainstream form of the current syringe packaging is an assembly process that combines a belt and the center of a dial. By rotating the center of the dial, the push rod and the syringe barrel are driven to the assembly station. The friction between the belt and the glass syringe barrel forms a torsion force, thereby realizing the relative rotation of the push rod and the syringe barrel until the end of the push rod is screwed into the rubber stopper. However, there are certain problems with this assembly method. When the push rod is screwed into the syringe barrel, it will be affected by the frictional force generated when the syringe barrel rotates relative to it, which may cause the push rod to easily rotate with the syringe barrel during the assembly process, resulting in the problem that the push rod is not screwed in place after the assembly is completed.

[0043] To solve the above problems, the present utility model proposes a technical solution to achieve the stability of the syringe during assembly through a pair of conjugate opening and closing jaws. The teeth on the active jaw have the function of preventing bidirectional rotation, which helps to tighten the thread during assembly. The structure is simple, there is no gap during opening and closing, and the assembly accuracy is high.

[0044] The implementation scheme of the present utility model will be described more specifically through embodiments below. It should be noted that the implementation schemes of the present utility model are not limited to these embodiments only.

[0045] Embodiment

[0046] In a specific embodiment, as Figures 1-3 shown, a pair of conjugate opening and closing jaw mechanisms of a screw rod labeling machine includes a fixed seat 4, a torsion spring assembly 3, and a conjugate jaw assembly; at least part of the torsion spring assembly 3 is arranged on the upper end surface of the fixed seat 4, and the conjugate jaw assembly is arranged on the lower end surface of the fixed seat 4; the conjugate jaw assembly includes an active jaw 1, a passive jaw 2, a cam roller, and a roller groove; the roller groove is arranged at the tail end of the passive jaw 2; the cam roller is arranged at the tail end of the active jaw 1 and passes through the roller groove; the active jaw 1 and the passive jaw 2 are connected through the cam roller; on the side of the active jaw 1 close to the passive jaw 2, there are teeth, and on the side of the passive jaw 2 close to the active jaw 1, there is a push rod notch; on the active jaw 1 and the passive jaw 2, there are shaft holes connected to the torsion spring assembly 3. The roller groove and the passive jaw 2 are an integral structure. The cam roller and the active jaw 1 are integrally formed. The torsion spring assembly 3 includes a torsion spring 3-1, a bearing roller 3-2, an active shaft 3-3, and a passive shaft 3-4; the torsion spring 3-1 is fixedly connected to the lower end of the bearing roller 3-2, and the torsion spring 3-1 is sleeved on the active shaft 3-3; the active shaft 3-3 passes through the fixed seat 4 and is fixedly connected to the active jaw 1; the passive shaft 3-4 passes through the fixed seat 4 and is fixedly connected to the passive jaw 2.

[0047] In this embodiment, the bearing roller 3-2 is used to twist the torsion spring 3-1 to provide the torsion for opening the conjugate jaw assembly. When not under force, the torsion spring 3-1 transmits the torsion to the active jaw 1 through the drive shaft 3-3, and the active jaw 1 transmits the force to the passive jaw 2 through the cam roller, thereby achieving stable closing under normal conditions. When opening is required, the external power source transmits the torsion to the torsion spring 3-1 through the bearing roller 3-2. The torsion spring 3-1 twists, driving the drive shaft 3-3 to rotate. The force on the active jaw 1 changes, and the passive jaw 2 and the active jaw 1 achieve conjugate opening and closing under the cooperation of the cam roller and the roller groove.

[0048] It should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A gripper mechanism of a rotary rod labeling machine that can conjugate and open / close, characterized in that, It includes a fixed seat, a torsion spring assembly, and a conjugate jaw assembly; At least part of the torsion spring assembly is arranged on the upper end surface of the fixed seat, and the conjugate jaw assembly is arranged on the lower end surface of the fixed seat; The conjugate jaw assembly includes a driving jaw, a driven jaw, a cam roller, and a roller groove; The roller groove is arranged at the tail end of the driven jaw; the cam roller is arranged at the tail end of the driving jaw and passes through the roller groove; The driving jaw and the driven jaw are connected by the cam roller; On the side of the driving jaw close to the driven jaw, there are locking teeth, and on the side of the driven jaw close to the driving jaw, there is a push rod notch; On the driving jaw and the driven jaw, there are shaft holes connected to the torsion spring assembly.

2. The gripper mechanism of the rotary rod labeling machine according to claim 1, which can conjugate and open and close, is characterized in that The roller groove and the driven jaw are of an integral structure.

3. The gripper mechanism capable of conjugate opening and closing of the rotary rod labeling machine according to claim 1, characterized in that, The cam roller and the driving jaw are integrally formed.

4. The gripper mechanism capable of conjugate opening and closing of the rotary rod labeling machine according to claim 1, characterized in that, The torsion spring assembly includes a torsion spring, a bearing roller, a driving shaft, and a driven shaft; The torsion spring is fixedly connected to the lower end of the bearing roller, and the torsion spring is sleeved on the driving shaft; The driving shaft passes through the fixed seat and is fixedly connected to the driving jaw; The driven shaft passes through the fixed seat and is fixedly connected to the driven jaw.

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