CN211870801U

CN211870801U - Automatic weighing hopper

Info

Publication number: CN211870801U
Application number: CN202020202097.5U
Authority: CN
Inventors: 唐康毅
Original assignee: Jindaotang Catering Jinan Co ltd
Current assignee: Jindaotang Catering Jinan Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-11-06
Anticipated expiration: 2030-02-24

Abstract

The utility model relates to an automatic weighing hopper, especially the automatic weighing hopper that can reduce controller output port volume of occuping. The utility model discloses an utilize the crank connecting rod to drive the baffle and open and be closed to cooperation travel switch and time delay disconnection relay, only need a port of controller to send the instruction of opening the baffle, the baffle can be opened in the motor start-up, and the self-closing baffle, other output port signals that need not to receive controller, thereby reduced controller output port volume. In addition, the utility model discloses with low costs, simple structure, programming logic is simple, can greatly reduce control system and control program's complexity.

Description

Automatic weighing hopper

Technical Field

The utility model relates to an automatic weighing hopper especially is used for automatic split charging equipment's automatic weighing hopper belongs to automation equipment technical field.

Background

The hopper is the important part of automatic partial shipment equipment under weighing, and the weight of the raw materials of title that it can be automatic to make the process automation of partial shipment raw materials, reduced manual operation, improved work efficiency. Weighing hoppers are used not only in small dispensers but also in large and complex dispensing equipment, such as fully automated complex food processing lines and production equipment. On such full-automatic production line, heavy hopper is numerous, and is usually by PLC, single chip microcomputer control. However, the number of ports of the PLC or the single chip microcomputer for output control is limited, and for large-scale equipment, signals occupying output ports are many except for a weighing hopper, so that when a control system is designed, the number of output ports of a controller is often insufficient, and each pin is precious for the control system. For weighing hoppers, as mentioned above, due to the large number of weighing hoppers, if the number of ports occupied by the weighing hoppers can be reduced, the number of ports of the controller can be greatly saved, thereby reducing the complexity of the whole control system including the control program. Typically one weigh hopper will have at least two output ports. A baffle for starting blanking, namely a motor rotates forwards; one for stopping the shutter, i.e. the motor is reversed. If the number of the output ports can be reduced to only one, the occupation of at least dozens of output ports can be reduced for a system of weighing down the hopper.

Disclosure of Invention

The utility model aims at reducing the occupation amount of the weighing hopper to PLC or singlechip output port and realizing the function of automatically weighing the raw materials.

In order to achieve the purpose, the utility model discloses an utilize the crank connecting rod to drive the baffle and open and be closed to cooperation travel switch and time delay disconnection relay only need a port of controller to send the instruction of opening the baffle, and the motor can start and open the baffle, and self-closing baffle need not to receive other output port signals of controller.

The device has the specific operation process that when the raw material in the weighing hopper reaches a certain preset weight, the controller sends out an instruction for opening the baffle, and the relay is disconnected in a delayed manner to be electrified; starting a motor, and opening a baffle; meanwhile, the delay off relay is turned off after delaying preset time; however, as the baffle is opened, the normally closed electric shock of the travel switch is closed, and the motor still keeps continuously rotating although the delay disconnection relay is disconnected; the baffle is closed after being opened due to the driving of the crank connecting rod mechanism. When the baffle plate reaches the closing position again, the normally closed electric shock of the travel switch is disconnected, and the motor stops running, so that the weighing and blanking process is completed.

The utility model has the advantages of it is following:

1. the number of occupied PLC or singlechip output ports is reduced by more than 50%, and the complexity of a control program of a large and complex control system is reduced.

2. Simple structure and low cost.

3. The baffle is stable and reliable, is not influenced by delay time, and can be accurately opened and closed. The delay time of the control program does not need to be accurately preset.

Description of the drawings:

fig. 1 and 2 are schematic structural views of the weighing hopper.

The components in the figure are: hopper box (1), motor (2), crank link mechanism (3), travel switch (4), baffle (5), weight sensor (6).

Fig. 3 is a circuit diagram of a weighing hopper.

The components in the figure are: KT1 is a time-delay disconnection relay (7), S1 is a travel switch (4), and M is a motor (2).

Fig. 4 is a circuit diagram of another weighing hopper without a time delay disconnect relay.

The components in the figure are: s1 is a travel switch (4), and M is a motor (2).

The specific implementation mode is as follows:

the utility model discloses constitute by hopper box (1), motor (2), crank link mechanism (3), travel switch (4), baffle (5), weighing transducer (6), time delay disconnection relay (7). Wherein, the motor (2) drives the baffle to rotate (3) through the crank connecting rod mechanism (3). The end part of one side of the opening of the baffle (5) is provided with a bulge for enabling the position switch (4) to be normally closed and electrically disconnected. In addition, the delay relay is electrified and then is attracted, is disconnected after delaying preset time, keeps the disconnection state until next time of electrification, and repeats the process.

When the device is operated, when the raw materials in the weighing hopper reach a certain preset weight, the controller sends out a command of opening the baffle, and the relay (6) is turned off in a delayed mode to be electrified; starting the motor (2), and opening the baffle (5); meanwhile, the delay turn-off relay (6) is turned off after delaying preset time; however, as the baffle (5) is opened, the travel switch (4) is closed by a normally closed electric shock, and the motor (2) still keeps continuously rotating although the relay is disconnected (5) by time delay; the baffle (5) is closed after being opened due to the driving of the crank connecting rod mechanism (3). When the baffle (5) reaches the closing position again, the normally closed electric shock of the travel switch (4) is disconnected, and the motor (2) stops running, so that the weighing and blanking process is completed.

The device can also eliminate a time delay opening relay (7). The circuit diagram is shown in fig. 4. When the device is operated, when the raw material in the weighing hopper reaches a certain preset weight, the output port of the controller is electrified for T seconds, wherein T is less than the time from opening to closing of the baffle; starting the motor (2), and opening the baffle (5); because the baffle (5) is opened, the travel switch (4) is closed by normal close electric shock, and the motor (2) continuously rotates; the baffle (5) is closed after being opened due to the driving of the crank connecting rod mechanism (3). When the baffle (5) arrives the closed position again, the normally closed electric shock of the travel switch (4) is disconnected, and meanwhile, the motor (2) stops running due to the fact that the output port of the controller is powered off, so that the weighing and blanking process is completed.

Claims

1. The utility model provides an automatic weighing hopper which characterized in that: the automatic weighing hopper consists of a hopper box (1), a motor (2), a crank-link mechanism (3), a travel switch (4), a baffle (5), a weight sensor (6) and a time-delay disconnection relay (7).

2. The automatic weighing hopper of claim 1, wherein: the delay turn-off relay (7) can be cancelled, the motor (2) is started in a mode that the output port of the PLC or the single chip microcomputer is switched on for T seconds, the function of the delay turn-off relay (7) is replaced, and T is smaller than the time from opening to closing of the baffle (5).

3. The automatic weighing hopper of claim 1, wherein: the motor (2) drives the baffle (5) to open and close through the crank connecting rod mechanism (3).

4. The automatic weighing hopper of claim 1, wherein: the execution part of the delay cut-off relay (7) is connected with the travel switch (4) in parallel and then connected with the motor (2) and the power supply in series, and the control part of the delay cut-off relay (7) is connected with the output port of the controller in series.

5. The automatic weighing hopper of claim 1, wherein: if the delay disconnection relay (7) is cancelled, the circuit connection is as follows: the travel switch (4) is connected with the output port of the controller in parallel and then connected with the motor (2) and the power supply in series.