CN110239757A - An electric plastic strapping machine - Google Patents

Abstract

An electric plastic belt baler of the present invention is used for packaging external plastic belts. The electric plastic belt baler includes a shell, a switch is arranged on the shell, a DC brushless motor is arranged inside the shell, and the packing belt is fixed. A device, a deceleration mechanism, a welding mechanism, a battery pack, a plastic tape passage port are arranged on the casing, and a control device is also arranged in the casing, and the control device includes a computing center and a Hall circuit mechanism. The DC brushless motor is a sensorless DC brushless motor, and the DC brushless motor is provided with a coil matching the Hall circuit mechanism, and the coil is electrically connected to the computing center. By setting the Hall circuit mechanism and the coil matched with the Hall circuit mechanism in the DC brushless motor, the computing center can effectively detect and control the operation status of the DC brushless motor. Therefore, the problem of heavy-load starting of the DC brushless motor in the prior art is solved.

Description

An electric plastic strapping machine

technical field

The invention relates to the field of packaging, in particular to an electric plastic belt packing machine.

Background technique

From the history of electric balers, the motor used in the first generation of balers is a brushed DC motor, and the brush motor has a natural defect of brush wear, which leads to a relatively short service life. The motor used by the second-generation baler is a DC brushless motor with a Hall sensor, and there is no problem of brush wear.

At present, the motor is usually equipped with a Hall sensor, but the Hall sensor will increase part of the cost. At the same time, due to the limitation of the size of the motor, the installation of the Hall sensor is difficult to ensure the accuracy of the position, which will result in some loss of efficiency.

The difficulty in the control of the DC brushless motor without Hall sensors is starting with a large load, in order to solve the problem of heavy load starting of the DC brushless motor in the prior art. Therefore, prior art needs to be improved.

Contents of the invention

The invention provides an electric plastic belt baler, which is used to solve the problem of heavy-load starting of a DC brushless motor in the prior art.

In order to achieve the above object, the technical scheme adopted in the present invention is:

An electric plastic belt baler, the electric plastic belt baler is used for external plastic belt packaging, the electric plastic belt baler includes a shell, a switch is provided on the shell, and a DC brushless Motor, packing belt fixing device, deceleration mechanism, welding mechanism, battery pack, plastic belt passage port is provided on the outer casing, and a control device is also arranged inside the outer casing, and the control device includes a computing center and a Hall circuit mechanism;

The DC brushless motor, the strap fixing device, the welding mechanism, the switch, the battery pack, and the Hall circuit mechanism are electrically connected to the computing center;

The DC brushless motor is a sensorless DC brushless motor, the DC brushless motor is provided with a coil matching the Hall circuit mechanism, the coil is electrically connected to the computing center, and the DC brushless motor The brush motor cooperates with the deceleration mechanism, and the deceleration mechanism cooperates with the external plastic belt through the plastic belt passage port;

The packing belt fixing device and the welding mechanism cooperate with the external plastic belt through the plastic belt through opening.

A further improvement is that the control device is further provided with a voltage sampling circuit mechanism and a current sampling circuit mechanism, and the voltage sampling circuit mechanism and the current sampling circuit mechanism are respectively electrically connected to the computing center.

A further improvement is that an LED indicator light is provided on the housing, and the LED indicator light is electrically connected to the computing center.

A further improvement is that the welding mechanism is a high-speed friction welding mechanism.

A further improvement is that the battery pack is a nickel-metal hydride battery pack.

A further improvement is that the battery pack is electrically connected to the computing center through a battery pack circuit.

A further improvement is that a handle is provided on the outer shell.

A further improvement is that the switch is arranged on the handle.

A further improvement is that a setting input mechanism is provided on the housing, and the setting input mechanism is electrically connected to the computing center.

Compared with the prior art, the present invention enables the computing center to effectively detect the operation status of the DC brushless motor and perform control. Therefore, the problem of heavy-load starting of the DC brushless motor in the prior art is solved.

Description of drawings

Fig. 1 is a schematic diagram of circuit connection of an electric plastic strapping machine of the present invention.

Detailed ways

In order to make the technical means, creative features, objectives and effects of the invention easy to understand, the present invention will be further described below in conjunction with the accompanying drawings.

The present invention provides an electric plastic strapping machine, as shown in Figure 1, the electric plastic strapping machine is used for external plastic strapping, the electric plastic strapping machine includes a shell, the shell is provided with a handle, the handle is A main switch 1 and a travel switch 11 are provided, and an LED indicator light 12 and a setting input mechanism 2 are also provided on the casing.

The casing is provided with a DC brushless motor 3, a packing belt fixing device, a deceleration mechanism, a welding mechanism 4, and a battery pack 5. The casing is provided with a plastic belt passage port, and a control device is also provided inside the casing. The control device includes a computing center 6, Hall circuit mechanism 7, voltage sampling circuit mechanism 8, and current sampling circuit mechanism 9.

Main switch 1, travel switch 11, LED indicator light 12, brushless DC motor 3, packing belt fixing device, welding mechanism 4, setting input mechanism 2, battery pack 5, Hall circuit mechanism 7, voltage sampling circuit mechanism 8, The current sampling circuit mechanism 9 is electrically connected with the computing center 6 .

The DC brushless motor 3 is a sensorless DC brushless motor, and the DC brushless motor 3 is provided with a coil that matches the Hall circuit mechanism 7, and the coil is electrically connected to the computing center 6, and the DC brushless motor 3 is matched with the speed reduction mechanism , the deceleration mechanism cooperates with the external plastic belt through the plastic belt through the mouth.

The welding mechanism 4 is a high-speed friction welding mechanism, and the strap fixing device and the welding mechanism 4 cooperate with the external plastic belt through the plastic belt through the mouth.

The battery pack 5 is a nickel metal hydride battery pack, and the battery pack 5 is electrically connected to the computing center 6 through a battery pack circuit 51 .

When in use, the SH79F3213U chip is used as the computing center, firstly activate the main switch, and set according to the needs by setting the input mechanism. Put the external plastic tape in the plastic tape passage port, start the limit switch, and the calculation center is turned on to start the DC brushless motor. The Hall circuit mechanism is equipped with a coil that matches the Hall circuit mechanism in the DC brushless motor. The calculation center adjusts the current supply to the DC brushless motor through the voltage change to achieve the purpose of gradually starting.

When the startup is complete and the external plastic belt is tightened, the motor stops moving, and the computing center stops supplying power to the brushless DC motor. The fixing device fixes the external plastic tape, and starts to supply power to the welding mechanism to melt and bond the external plastic tape. Complete the packing job.

The beneficial effects of the present invention are: by setting the Hall circuit mechanism and the coils matched with the Hall circuit mechanism in the DC brushless motor, the computing center can effectively detect and control the operation status of the DC brushless motor, and utilize A method for deep filtering of motor back EMF. Therefore, the problem of heavy-load starting of the DC brushless motor in the prior art is solved.

Specific embodiments of the invention have been described above. It should be understood that the invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a common way in the art; those skilled in the art can make Some simple deduction, deformation or replacement are made for various transformations or modifications, which do not affect the essence of the invention.

Claims (9)

1. a kind of electronic plastic band baling press, the electronic plastic band baling press is used for extraneous plastic band and is packaged, the electronic modeling Adhesive tape packing machine includes a shell, and the shell is equipped with switch, is equipped with DC brushless motor in the shell, strap is fixed Device, deceleration mechanism, Welding mechanism, battery pack, the shell are equipped with plastic band and pass through mouth, it is characterised in that: the shell It is inside additionally provided with control device, the control device includes calculating center, Hall circuit mechanism；

It is the fixed device of the DC brushless motor, the strap, the Welding mechanism, the switch, the battery pack, described Hall circuit mechanism is electrically connected with the calculating center；

The DC brushless motor is no sensor DC brushless motor, is equipped in the DC brushless motor and the Hall electricity The coil that road mechanism matches, the coil are electrically connected with the calculating center, the DC brushless motor and the speed reducer Structure matches, and the deceleration mechanism is matched by mouth with the extraneous plastic band by the plastic band；

The fixed device of the strap, the Welding mechanism are matched by the plastic band by mouth and the extraneous plastic band It closes.

2. a kind of electronic plastic band baling press as described in claim 1, it is characterised in that: be additionally provided with electricity on the control device Press sample circuit mechanism, current sampling circuit mechanism, the voltage sampling circuit mechanism, current sampling circuit mechanism difference It is electrically connected with the calculating center.

3. a kind of electronic plastic band baling press as described in claim 1, it is characterised in that: the shell is equipped with LED indication Lamp, the LED light are electrically connected with the calculating center.

4. a kind of electronic plastic band baling press as described in claim 1, it is characterised in that: the Welding mechanism is high-speed friction Welding mechanism.

5. a kind of electronic plastic band baling press as described in claim 1, it is characterised in that: the battery pack is nickel-metal hydride battery Group.

6. a kind of electronic plastic band baling press as claimed in claim 5, it is characterised in that: the battery pack passes through battery pack electricity Road is electrically connected with the calculating center.

7. a kind of electronic plastic band baling press as described in claim 1, it is characterised in that: the shell is equipped with portable handle.

8. a kind of electronic plastic band baling press as claimed in claim 7, it is characterised in that: the switch is located at the portable handle On.

9. a kind of electronic plastic band baling press as described in claim 1, it is characterised in that: the shell is equipped with setting input Mechanism, the setting input mechanism are electrically connected with the calculating center.