CN218892717U

CN218892717U - Weighing auxiliary mechanism

Info

Publication number: CN218892717U
Application number: CN202223449068.7U
Authority: CN
Inventors: 陈优
Original assignee: Wuxi Ruili Technology Development Co ltd
Current assignee: Wuxi Ruili Technology Development Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-04-21
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a weighing auxiliary mechanism which comprises a frame, a metering barrel, a first cylinder, a second cylinder and a circular arc clamping jaw, wherein the first cylinder is arranged at the position, corresponding to the lower part of the metering barrel, of the front outer wall of the frame, the second cylinder is arranged at the position, opposite to the first cylinder, of the rear outer wall of the frame, the first cylinder and the second cylinder are arranged oppositely, and the circular arc clamping jaw is arranged at the head of a piston rod. The utility model utilizes the automatic quantitative balance to complete the particularities of the discharging stage and the feeding initial stage in the primary weighing process, namely the key moment of vibration force generation and the insensitive moment of weighing data acquisition, controls the arc clamping jaw to extend through the actions of the two cylinders to clamp the metering barrel, and completely inhibits the vibration of the metering barrel on the premise of not influencing the actual weighing performance and not increasing other cost, thereby ensuring the productivity and the weighing precision.

Description

Weighing auxiliary mechanism

Technical Field

The utility model relates to the technical field of automatic quantitative packing scales, in particular to a weighing auxiliary mechanism.

Background

In the field of automatic quantitative packing scales, ensuring accuracy and improving packing speed are contradictory, and many contradictory factors are generated, wherein one of the factors is the stability of the metering barrel in the weighing process. The metering barrel is a container for carrying materials to be weighed, and basically works in the following manner: when the material in the metering barrel is close to the target value, a few seconds in advance is converted into slow feeding, at the moment, the channel for opening the upper feeding valve is greatly reduced, the material slowly and accurately enters the metering barrel until the target weight, feeding is stopped, and the feeding channel is completely closed. And then the discharging door at the bottom of the metering barrel is opened quickly, the weighed quantitative material is completely discharged at the highest speed, and the material enters the lower packaging bag to finish filling. After the metering barrel is emptied, the discharging door of the metering barrel is quickly closed, the next package of material is started to be fed, and the operation is repeated.

In the process of circularly reciprocating the material in and out of the metering barrel, the metering barrel is impacted by load, so that the metering barrel vibrates, and the stability of the metering barrel is affected.

1. The metering barrel is changed into a quick feeding state from an idle state, at the moment, materials quickly enter the metering barrel and smash into the bottom of the metering barrel, and the metering barrel is changed into a state of receiving large downward impact force from a static state due to the quick material entering speed, so that the stable stress state of the metering barrel is broken, and vibration is caused;

2. after the feeding is finished, the metering barrel discharging door is quickly opened to empty materials, then the discharging door is quickly closed, the two actions are that the metering barrel is fully loaded to be empty, the stress of the metering barrel suddenly disappears, the metering barrel discharging door is quickly closed again on the basis, and the two actions are overlapped to influence the effect, so that the stress of the metering barrel is greatly changed, and the vibration of the metering barrel is caused.

At present, in order to avoid the influence of the vibration of the measuring barrel on the weighing precision, the following method is generally adopted:

1. and the mounting structure and the form of the metering barrel and the weighing sensor are changed. In the industry, a weighing structure is mostly formed by hanging a metering barrel on one side of a single weighing sensor in a single-point installation way, one end of the metering barrel and the weighing sensor are firmly installed together, but the other end of the metering barrel is completely free and not limited, so that vibration is easy to generate, and after the vibration is generated, the vibration is eliminated slowly because one end is not limited. Therefore, a plurality of manufacturers change the installation mode of the weighing barrel into two or three symmetrical weighing sensors to support, so that the weighing sensors can uniformly spread stress, and meanwhile, the weighing sensors can effectively and physically limit the weighing barrel, so that vibration is eliminated. However, the negative effects brought by the method obviously increase the cost and the installation complexity of the weighing sensor and the weighing barrel, the weighing sensor is doubled and doubled, the cost is low, the change greatly influences the overall cost advantage of the equipment, in addition, all the stress of the single-point installation weighing barrel can only be applied to a single weighing sensor, after the change, the two or three weighing sensors jointly support one weighing barrel, the accurate adjustment is needed during the mechanical design and the actual product installation, the stress of each weighing sensor is ensured to be uniformly spread, otherwise, the load is offset, and the weighing precision is influenced;

2. the method can basically avoid vibration peak staggering, but has the negative effect of reducing productivity and influencing efficiency, because the next work can be carried out only after the vibration influence is eliminated, especially when a metering barrel discharging door is opened for discharging, then the discharging door is closed, the action of one switch needs about 1.5 seconds, the waiting time is added, 3 seconds are consumed for each time of completing one weighing, and the consumption of 10 seconds is remarkable for packaging occasions when one weighing is completed.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the weighing auxiliary mechanism, which utilizes the automatic quantitative balance to complete the particularities of the discharging stage and the feeding initial stage in the primary weighing process, namely the moment exactly being the key moment of vibration force generation and the moment of insensitivity of weighing data acquisition, controls the arc clamping jaw to extend out through the actions of two cylinders to clamp the metering barrel, and completely inhibits the vibration of the metering barrel on the premise of not influencing the actual weighing performance and on the basis of not increasing other cost, thereby ensuring the productivity and the weighing precision.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a weighing assist mechanism, includes frame, measurement bucket, cylinder one, cylinder two and convex clamping jaw, install the inside below of frame the measurement bucket, weighing sensor is installed on the upper portion of measurement bucket, the front side outer wall of frame corresponds the lower part department of measurement bucket installs cylinder one, the rear side outer wall of frame is to the top cylinder one position department installs cylinder two, cylinder one with the two face-to-face setting of cylinder, cylinder one with cylinder two is close to the one end of frame all is connected with the piston rod, the piston rod runs through the frame inner wall, install the head of piston rod convex clamping jaw.

Further, a high-elasticity rubber pad is arranged on the contact surface of the circular arc clamping jaw and the metering barrel.

Further, the first cylinder and the second cylinder are respectively provided with a mounting bracket, and the mounting brackets are connected with the frame through bolts.

Furthermore, the connection mode of the circular arc clamping jaw and the piston rod is detachable connection.

Further, the first cylinder and the second cylinder are simultaneously controlled by the electromagnetic valve.

The beneficial effects of the utility model are as follows:

this patent continues to adopt single weighing sensor to hang this kind of mounting means that does not increase weighing sensor quantity of a weighing barrel in one side single point, utilize automatic ration balance to accomplish the particularity of discharging stage and feeding initial stage in the flow of once weighing, just happens to be the key moment that vibration force produced promptly, simultaneously still weighing data acquisition insensitive moment, the action control convex clamping jaw through two cylinders stretches out, grip the weighing barrel, under the prerequisite that does not influence actual weighing performance, on the basis that does not increase other costs, the vibration of weighing barrel has been restrained completely, thereby ensured productivity and weighing accuracy.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a side view of the present utility model;

fig. 3 is a schematic view of the clamping state of the circular arc clamping jaw of the utility model.

Reference numerals in the drawings: 1. a frame; 2. a metering barrel; 3. a weighing sensor; 4. a first cylinder; 5. a second cylinder; 6. a piston rod; 7. circular arc clamping jaw; 8. a high-elasticity rubber pad; 9. and (5) mounting a bracket.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

Example 1

The weighing auxiliary mechanism as shown in figures 1-3 comprises a frame 1, a metering barrel 2, a first cylinder 4, a second cylinder 5 and a circular arc clamping jaw 7, wherein the metering barrel 2 is arranged below the inside of the frame 1, a weighing sensor 3 is arranged at the upper part of the metering barrel 2, the first cylinder 4 is arranged at the position of the front outer wall of the frame 1 corresponding to the lower part of the metering barrel 2, the second cylinder 5 is arranged at the position of the rear outer wall of the frame 1 opposite to the first cylinder 4, the first cylinder 4 and the second cylinder 5 are arranged face to face, one ends of the first cylinder 4 and the second cylinder 5 close to the frame 1 are connected with a piston rod 6, the piston rod 6 penetrates through the inner wall of the frame 1, the circular arc clamping jaw 7 is arranged at the head of the piston rod 6, a high-elasticity rubber pad 8 is arranged at the contact surface of the circular arc clamping jaw 7 and the metering barrel 2, the first cylinder 4 and the second cylinder 5 are controlled simultaneously by an electromagnetic valve, the patent continues to adopt a mounting mode that a single weighing sensor 3 is hung on one side in a single point manner without increasing the number of the weighing sensors 3, when the weighing sensor is used, the first cylinder 4 and the second cylinder 5 are opposite to each other, the ventilation conversion of the cylinders is realized by electrifying and de-electrifying a piece of electromagnetic valve, simultaneously the extension and retraction of the piston rods 6 of the two cylinders are controlled, the extension of the piston rods 6 is utilized to drive the front circular arc clamping jaw 7 to move towards the direction of the weighing barrel 2 until the piston rods 6 of the two cylinders are fully extended in place, the circular arc clamping jaw 7 is tightly contacted with the outer wall of the weighing barrel 2, the high-elasticity rubber pad 8 lined by the circular arc clamping jaw 7 is utilized to firmly clamp the weighing barrel 2, the degree of freedom of the weighing barrel 2 is completely lost, the weighing barrel 2 is completely not limited from completely not limited to completely limited, the vibration is eliminated, the stress change of the weighing barrel 2 is counteracted, so that the metering drum 2 is always in a stable state.

Because when the measuring barrel 2 is actually weighed, in order to ensure accuracy, other external forces except for the gravity action of the materials in the measuring barrel 2 on the measuring barrel 2 cannot be applied to the measuring barrel 2, the circular arc-shaped clamping jaw 7 cannot always clamp the measuring barrel 2, and if the measuring barrel 2 is always clamped, the measuring barrel 2 loses the weighing function.

For this purpose, in combination with the actual weighing process, in the process of completing a complete weighing of a package, the circular arc-shaped clamping jaw 7 is extended from the following two node control cylinders to clamp the metering barrel 2 so as not to vibrate.

After weighing of the metering barrel 2 is finished, feeding is finished, a discharging process is carried out, the weighing is finished at the moment, the discharging process is carried out only by emptying the material in the metering barrel 2, the discharging door of the metering barrel 2 is opened firstly in the discharging process, then the discharging is finished and is closed, the two continuous actions are the largest factors causing vibration of the metering barrel 2, and in combination with a control program, after the feeding of the metering barrel 2 is finished and the weight rechecking is finished, the discharging door of the metering barrel 2 is opened, the first cylinder 4 and the second cylinder 5 control the arc-shaped clamping jaw 7 on the piston rod 6 to extend out quickly, extend out to the position for 0.2 seconds, and the metering barrel 2 is clamped firmly while discharging, so that the stress impact changes caused by the two actions of opening and closing the discharging door of the metering barrel 2 on the metering barrel 2 are counteracted;

after the discharging is finished, the discharging door of the metering barrel 2 is closed, the metering barrel 2 is not required to be stabilized, the upper part is immediately opened for quick feeding, then the piston rod 6 is retracted after 2 seconds, the circular arc-shaped clamping jaw 7 is separated from the metering barrel 2, the metering barrel 2 is restored to a free state without external force contact, thus not only can the impact of the feeding just started be offset, but also the weighing monitoring is suspended for two seconds at the moment because the feeding is started, the final precision of each actual weighing is not influenced, and the weighing monitoring is only suspended, the feeding is continued, and the productivity is not influenced.

Example two

And the first cylinder 4 and the second cylinder 5 are respectively provided with a mounting bracket 9, and the mounting brackets 9 are connected with the frame 1 through bolts, so that the first cylinder 4 and the second cylinder 5 can be conveniently mounted and dismounted.

Example III

The connection mode of the arc clamping jaw 7 and the piston rod 6 is detachable connection, so that the arc clamping jaw 7 can be detached conveniently when damaged and deformed, and maintenance or replacement can be carried out.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an auxiliary mechanism weighs, includes frame (1), measurement bucket (2), cylinder one (4), cylinder two (5) and convex clamping jaw (7), its characterized in that: the utility model discloses a weighing device for the weighing device of the electric vehicle, including frame (1), weighing sensor (3) are installed to the inside below of frame (1), weighing sensor (3) are installed on the upper portion of weighing sensor (2), front side outer wall of frame (1) corresponds weighing sensor (2) lower part department installs cylinder one (4), the rear side outer wall of frame (1) corresponds cylinder one (4) position department installs cylinder two (5), cylinder one (4) with cylinder two (5) face-to-face setting, cylinder one (4) with cylinder two (5) are close to the one end of frame (1) all is connected with piston rod (6), piston rod (6) run through frame (1) inner wall, the head of piston rod (6) is installed convex clamping jaw (7).

2. A weighing assist mechanism as recited in claim 1 wherein: the contact surface of the circular arc clamping jaw (7) and the metering barrel (2) is provided with a high-elasticity rubber pad (8).

3. A weighing assist mechanism as recited in claim 1 wherein: and the first air cylinder (4) and the second air cylinder (5) are respectively provided with a mounting bracket (9), and the mounting brackets (9) are connected with the frame (1) through bolts.

4. A weighing assist mechanism as recited in claim 1 wherein: the arc clamping jaw (7) is detachably connected with the piston rod (6).

5. A weighing assist mechanism as recited in claim 1 wherein: the first cylinder (4) and the second cylinder (5) are simultaneously controlled by electromagnetic valves.