CN210310967U - Weighing machine - Google Patents

Abstract

The utility model provides a weighing machine, including base, stocker, weighing component, two at least feeders and controller. The feeding frequency of the feeder sleeved outside is higher than that of the feeder embedded inside, the feeders are started simultaneously to continuously convey materials to a packaging bag or a packaging box on the weighing component, the feeding frequency of the feeder sleeved outside is high, the number of conveyed materials in unit time is large, the weighing efficiency can be effectively improved, when the weight of the materials to be weighed is about to reach the target weighing capacity, the high-frequency feeder sleeved outside stops working, the materials are continuously conveyed only by the low-frequency feeder embedded inside, the feeding frequency is low, the number of conveyed materials in unit time is small, the feeding can be timely stopped when the target weighing capacity is reached, and the weighing precision is improved.

Description

Weighing machine

Technical Field

The utility model belongs to the technical field of weighing-appliance, concretely relates to weighing machine.

Background

Bulk materials are often packaged in bags, are convenient to store, transport, use and the like, and are low in cost. The initial packaging mode is manual packaging, and people need to add and take out for many times by means of a platform scale during packaging so that the packaging quantity is close to the standard packaging quantity as much as possible.

Therefore, chinese patent document CN109855716A proposes a weighing hopper capable of improving weighing accuracy, which comprises a fixed platform and a hopper located on the fixed platform, wherein a discharge port is arranged at the lower side of the hopper, a bearing container is placed under the discharge port in a matching manner, a vibrator is arranged on the outer surface of the hopper, a weighing sensor is arranged at the lower part of the hopper, a lead block is arranged in the fixed platform, and the vibrator drives the hopper to vibrate, so that materials in the hopper are conveyed to the bearing container by the discharge port in a vibrating manner, the whole weight of the hopper is detected by the weighing sensor, and the weight of the materials entering the bearing container is determined by the reduction of the whole weight of the hopper.

However, the weighing sensor needs to weigh the whole weight of the hopper and the materials inside the hopper in a static state, so that whether the required weight of the materials in the bearing container is reached cannot be determined in the vibration conveying process, the vibrator can only be started and stopped frequently, the whole residual weight of the hopper and the materials inside the hopper can be determined through multiple measurements, the working efficiency is greatly reduced through frequent weighing, the discharge port is arranged towards the bearing container in an inclined mode, after the vibrator stops, the materials at the discharge port easily slide down into the bearing container under the self gravity, and weighing errors can still be caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem that the current weighing device weighs inefficiency and weigh the accuracy not high.

Therefore, the utility model provides a weighing machine, include

A base;

a stocker mounted on the base; the hopper having a first inlet above and a first outlet below;

the weighing assembly is arranged below the first outlet;

at least two feeders nested and stacked between the first outlet and the weighing assembly;

any of the feeders is adapted to operate independently; the feeding frequency of the feeder sleeved outside is higher than that of the feeder embedded inside;

a controller mounted on the base; the controller is electrically connected with the weighing assembly and any feeder respectively.

Preferably, in the weighing machine, two feeders are provided, and each feeder is a first feeder and a second feeder;

the first feeder is arranged between the first outlet and the weighing component; having an output end directed towards the weighing assembly;

the second feeder is embedded and stacked on the first feeder positioned on one side of the weighing assembly, and the output end of the second feeder is flush with the end face of the output end of the first feeder;

the feeding frequency of the first feeder is higher than that of the second feeder;

preferably, in the weighing machine, the first feeder and the second feeder are both flat plate vibrators.

Preferably, in the weighing machine, the second plate of the second feeder is parallel to the first plate of the first feeder and is arranged at a gap;

and a second bracket of the second feeder is arranged on the first flat plate in a penetrating manner and is connected to the bottom of the second flat plate.

Preferably, the weighing machine, the weighing assembly comprises

The electronic scale is arranged below any one of the feeders; the electronic scale is electrically connected with the controller;

and the weighing frame is arranged between the feeder and the electronic scale and is suitable for fixing a bearing part for bearing materials.

Preferably, the weighing machine further comprises

And the hopper is positioned on the conveying path of any one feeder towards the weighing assembly and is provided with a second inlet positioned above and a second outlet positioned below.

Preferably, the weighing machine further comprises an isolation assembly arranged between the feeder and the weighing assembly; the isolation assembly is adapted to block the transport path.

Preferably, the weighing machine as described above,

the isolation assembly comprises

The mounting rack is arranged on the base;

the driver is fixed on the mounting frame and is electrically connected with the controller;

a partition plate fixed to a drive shaft of the driver;

the driver is adapted to drive the isolation plate to block the transport path.

Preferably, in the weighing machine described above, a sealing butterfly valve is provided in the first outlet;

the hopper is connected with a suction device; the suction device is adapted to suck the material to be weighed into the hopper.

Preferably, in the weighing machine, the suction device is a vacuum pump.

The technical scheme of the utility model, have following advantage:

1. the utility model provides a pair of weighing machine, set up two at least feeders between stocker and weighing subassembly, the feeder all can the independent operation, the pay-off frequency that the feeder outside was established to the cover is higher than inlay the pay-off frequency of establishing the feeder in inside, the feeder starts simultaneously and continuously carries the material to in weighing wrapping bag or the packing box on the subassembly, the pay-off frequency that the feeder outside was established to the cover is high, the material of carrying in the unit interval is many, can effectively improve the efficiency of weighing, treat that the weight of title material is being about to reach the target weighing volume, the high frequency feeder stop work outside is established to the cover, only continue the pay-off by inlaying the low frequency feeder of establishing in inside, because the pay-off frequency is low, the material of carrying in the unit interval is few, therefore, can in time stop the pay-off when reaching the target weighing volume.

2. The utility model provides a pair of weighing machine sets up the isolation subassembly between weighing subassembly and feeder, through the isolation subassembly with the feeder orientation weigh subassembly transported substance's route block when weighing the end to avoid the material on the feeder to fall into below packing bag or packing box because inertia or action of gravity, cause weighing error, improved the precision of weighing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of the weighing machine of the present invention;

fig. 2 is a right side view of the weighing machine of the utility model.

Description of reference numerals:

1-a base;

2-a stocker; 21-a first inlet; 22-a first outlet; 221-a butterfly valve;

3-a weighing assembly; 31-an electronic scale; 32-a weighing frame;

4-a first feeder; 41-a first plate; 42-a first scaffold;

5-a second feeder; 51-a second plate; 52-a second support;

6-a control box;

7-a hopper; 71-a second inlet; 72-a second outlet;

8-an isolation component; 81-a mounting rack; 82-a driver; 83-a separator plate;

9-suction hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment provides a weighing machine, as shown in fig. 1, including a base 1, a hopper 2, a weighing assembly 3, at least two feeders, and a controller. The base 1 is provided with a rack, all controllers are integrally installed in a control box 6 positioned on one side of the rack, the start and stop operation of each controller is controlled through a control panel (not shown in the figure) on the control box 6, the stocker 2 is erected on the upper portion of the rack, the stocker 2 is a bucket-shaped box body and is provided with a first inlet 21 positioned above and a first outlet 22 positioned below, the first inlet 21 is arranged on the side wall surface of the stocker 2, the first outlet 22 is vertically arranged and is opened downwards, as shown in figure 2, a butterfly valve 221 capable of being opened and closed in a turnover mode is arranged at the first outlet 22, the butterfly valve 221 is suitable for sealing the first outlet 22, and the butterfly valve 221 is electrically connected with a butterfly valve controller (not shown in the.

As shown in fig. 1, the first inlet 21 can be designed according to the shape of the material to be weighed, for example, in this embodiment, the material to be weighed is a circular rubber plug, and the first inlet 21 is configured as a circular opening matched with the circular rubber plug. A suction hole 9 is further formed at the top of the hopper 2, the suction hole 9 is connected to a suction device (not shown in the figure), when the material is stored in the hopper 2, the butterfly valve 221 is first closed to close the first outlet 22, the suction device is opened to draw the air in the hopper 2 outwards, at this time, a pressure difference is generated between the inside of the hopper 2 and the outside, and the material at the first inlet 21 is sucked into the hopper 2 through the pressure difference, in this embodiment, the suction device is a vacuum pump.

As shown in fig. 1, at least two feeders are arranged below the first outlet 22 in a positive-to-negative manner, the feeders are mounted on the base 1, in the embodiment, the feeders are arranged in two, namely, a first feeder 4 and a second feeder 5 which are horizontally arranged, the first feeder 4 and the second feeder 5 both adopt plate vibrators, the second feeder 5 is embedded in the first feeder 4, a second plate 51 of the second feeder 5 is superposed on a first plate 41 of the first feeder 4, a gap is arranged between the second plate 51 and the first plate 41 in the vertical direction, the gap has a size which ensures that materials cannot enter, a second bracket 52 of the second feeder 5 penetrates through the first plate 41 and is fixed at the bottom of the second plate 51, an excitation source is arranged between the second bracket 52 and the second plate 51 to drive the second plate 51 to vibrate, a first bracket 42 is arranged below the first plate 41, an excitation source is also provided between the first plate 41 and the first support 42 to drive the first plate 41 to vibrate, and the vibration frequency of the first plate 41 is higher than that of the second plate 51. The excitation source of any feeder is electrically connected with a vibration controller (not shown in the figure), and the vibration controller controls the excitation source of the corresponding feeder to independently start and stop.

As shown in fig. 1, the length of the first plate 41 is greater than the length of the second plate 51, and the output end of the second plate 51 is flush with the end surface of the output end of the first plate 41 and both are disposed toward the weighing assembly 3. The lower part of the first outlet 22 is opposite to the first flat plate 41, and the outlet end surface of the first outlet 22 is spaced from the first flat plate 41 by a proper distance, so as to reduce the fall of the material entering the first flat plate 41 from the hopper 2, and ensure that the material falls and is accumulated between the first outlet 22 and the first flat plate 41 under the self-gravity in the state that the first outlet 22 is normally open, and is continuously conveyed outwards under the vibration of the first flat plate 41.

As shown in fig. 1, the output end of the feeder is further provided with a hopper 7, the hopper 7 is fixed on the frame through a fixing rod (not shown in the figure), a second inlet 71 of the hopper 7 is arranged opposite to the output end, a second outlet 72 of the hopper 7 is arranged opposite to the weighing assembly 3, the hopper 7 can limit the flow direction of the materials, and the materials are prevented from falling outside due to too small opening of a containing piece (not shown in the figure) for containing the materials, for example, the containing piece is a packaging bag or a packaging box.

As shown in fig. 1, the weighing assembly 3 includes a weighing frame 32 and an electronic scale 31, the electronic scale 31 is installed on the base 1 and electrically connected to a weighing controller (not shown in the figure) for setting a target weighing capacity, the electronic scale 31 has a display screen (not shown in the figure), the display screen is disposed on the control box 6 for setting and observing the weighed weight, the electronic scale 31 is further provided with the weighing frame 32, as shown in fig. 2, the weighing frame 32 is a frame structure suitable for being sleeved or hanging on a packaging bag, of course, the weighing frame 32 may not be provided, and the packaging box is directly placed on the electronic scale 31 for containing materials.

As shown in fig. 1, a spacer assembly 8 is further disposed between the feeder and the hopper 7, and the spacer assembly 8 includes a mounting bracket 81, a driver 82, and a spacer plate 83. As shown in fig. 2, the mounting bracket 81 is two horizontal cross bars, the symmetry sets up in the feeder both sides and fixes in the frame, each cross bar front end sets up driver 82, in this embodiment, driver 82 adopts the cylinder, the cylinder has the telescopic link, telescopic link tip fixed mounting is at the division board 83 both ends, the vertical setting of division board 83 is between the output of feeder and hopper 7, receive the synchronous drive of two cylinders, division board 83 is located the plane below that the output was located at the pay-off in-process, when the pay-off was ended, division board 83 rises and blocks the transport route of material and shelters from on the output terminal surface, prevent that the material from falling into below packing bag or packing box owing to inertia or action of gravity, cause weighing error.

The working process of the weighing machine in the embodiment is as follows: (taking the rubber plug as an example, the isolation plate 83 is located below the output end face as an initial state)

Firstly, closing the butterfly valve 221, starting the vacuum pump, pumping the rubber plug into the stocker 2 through the first inlet 21, closing the vacuum pump after the rubber plug reaches a certain storage amount in the stocker 2, opening the butterfly valve 221, and allowing the rubber plug to flow to the first outlet 22 under the action of self gravity and fall onto the first flat plate 41; the weighing rack 32 is provided with a packing bag, and a target weighing amount is set by the control box 6.

First feeder 4 and second feeder 5 are opened simultaneously, the plug continuously falls into the packing bag through hopper 7, electronic scale 31 weighs and continuously feeds back real-time weight to control box 6, show the reading of real-time weight through the display screen demonstration, when the reading is close target weighing capacity, first feeder 4 closes, second feeder 5 lasts work, slowly carry the plug to the packing bag, when reaching target weighing capacity, second feeder 5 closes, division board 83 rises this moment and shelters from the output at the feeder, accomplish and weigh once.

As a first alternative embodiment of example 1, the first inlet 21 of the hopper 2 can be enlarged without suction means, and the material can be dispensed by manual or other mechanical transport means.

As a second alternative embodiment of example 1, the weighing rack 32 may be arranged on the outer wall surface of the second outlet 72 of the hopper 7, so that the material coming out of the second outlet 72 of the hopper 7 can directly enter the receiving member, and the drop height between the second outlet 72 and the receiving member is reduced.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. A weighing machine, comprising:

a base (1);

a stocker (2) mounted on the base (1); the hopper (2) having a first inlet (21) located above and a first outlet (22) located below;

a weighing assembly (3) disposed below the first outlet (22);

-at least two feeders nested and stacked one inside the other between the first outlet (22) and the weighing assembly (3);

any of the feeders is adapted to operate independently; the feeding frequency of the feeder sleeved outside is higher than that of the feeder embedded inside;

a controller mounted on the base (1); the controller is respectively and electrically connected with the weighing assembly (3) and any feeder.

2. Weighing machine according to claim 1, characterised in that said feeders are provided in two, respectively a first feeder (4) and a second feeder (5);

the first feeder (4) being arranged between the first outlet (22) and the weighing assembly (3); having an output directed towards the weighing assembly (3);

the second feeder (5) is embedded and stacked on the first feeder (4) positioned on one side of the weighing assembly (3), and the output end of the second feeder is flush with the end surface of the output end of the first feeder (4);

the feeding frequency of the first feeder (4) is higher than that of the second feeder (5).

3. Weighing machine according to claim 2, characterized in that said first feeder (4) and said second feeder (5) are both flat-bed vibrators.

4. Weighing machine according to claim 3, characterised in that the second plate (51) of the second feeder (5) is arranged parallel and spaced from the first plate (41) of the first feeder (4);

the second bracket (52) of the second feeder (5) is arranged on the first flat plate (41) in a penetrating way and is connected to the bottom of the second flat plate (51).

5. Weighing machine according to claim 1, characterised in that said weighing assembly (3) comprises

An electronic scale (31) disposed below any one of the feeders; the electronic scale (31) is electrically connected with the controller;

and the weighing frame (32) is arranged between the feeder and the electronic scale (31) and is suitable for fixing a bearing part for bearing materials.

6. The weighing machine of any one of claims 1-5, further including

A hopper (7) located on the transport path of any one of said feeders towards said weighing assembly (3) and having a second inlet (71) located above and a second outlet (72) located below.

7. The weighing machine according to claim 6, characterized in that it further comprises an isolating group (8) arranged between the feeder and the weighing group (3); the isolation assembly (8) is adapted to block the transport path.

8. The weighing machine of claim 7,

the isolation assembly (8) comprises

A mounting frame (81) arranged on the base (1);

the driver (82) is fixed on the mounting frame (81) and is electrically connected with the controller;

a partition plate (83) fixed to a drive shaft of the driver (82);

the driver (82) is adapted to drive the isolation plate (83) to block the transport path.

9. Weighing machine according to claim 1, characterized in that a sealing butterfly valve (221) is provided inside said first outlet (22);

the hopper (2) is connected with a suction device; the suction means are adapted to suck the material to be weighed into the hopper (2).

10. The weighing machine of claim 9, wherein the suction device employs a vacuum pump.

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