Labeling machine with electromagnetic brake
By introducing an electromagnetic brake and a tension detection system into the labeling machine, the problems of poor label tension control and mechanical wear have been solved, achieving precise label tension control and improved equipment reliability.
Patent Information
- Application Number
- CN202520648348.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-08
AI Technical Summary
Existing labeling machines use a friction-type braking mechanism, which makes it impossible to control the label travel distance, resulting in a large tension swing range, poor tension control, severe wear of the mechanical structure, and a short service life.
Employing an electromagnetic brake and tension detection system, the main control board controls the release and braking of the label, achieving precise control of the label tension and reducing mechanical wear.
It enables precise control of the label tension range, reduces mechanical wear, and improves the reliability and service life of the equipment.
Smart Images
Figure CN223935182U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of labeling machine technology, and in particular to a labeling machine with an electromagnetic brake. Background Technology
[0002] Most current labeling machines are driven by a single motor, and the label supply side uses a friction brake mechanism. This makes it impossible to control the distance the label travels each time the brake mechanism is released, resulting in a large swing range of the tension swing shaft and a large range of label tension. This is not conducive to label tension control. In addition, the brake mechanism has many mechanical wear parts, resulting in a short service life and requiring regular replacement. Utility Model Content
[0003] The technical problem this invention aims to solve is that existing labeling machines are basically driven by a single motor, and the label supply side uses a friction brake mechanism. This makes it impossible to control the distance the label travels each time the brake mechanism is released, resulting in a large swing range of the tension swing shaft and a large range of label tension, which is not conducive to label tension control. In addition, the mechanical structure of the brake part has many wear parts, a short service life, and needs to be replaced regularly. The invention provides a labeling machine with an electromagnetic brake, which is more intelligent and can significantly reduce the problem of uncertain travel distance caused by inertia during label movement. Overall, the structure is simpler, the control is more precise, the performance is more reliable, and it is basically free of wear parts.
[0004] To achieve the above-mentioned objectives, the present invention provides a labeling machine with an electromagnetic brake, comprising:
[0005] frame:
[0006] A recycling roll motor mounted on the frame for driving the label recycling roll to rotate;
[0007] A tension detection shaft is floating on the frame, and the tension detection shaft outputs a force signal, which is detected by a force detection circuit.
[0008] A main control board, the main control board having a motor drive circuit, the motor drive circuit being used to drive the recycling roll motor to work;
[0009] The first transition shaft, the second transition shaft, and the third transition shaft are mounted on the frame;
[0010] A U-shaped groove sensor is installed on the rack to detect the presence or absence of a label, and the U-shaped groove sensor is connected to the main control board;
[0011] A label peeler is mounted on the frame and located at the end of the U-shaped groove sensor, the label peeler peels the label off the label backing paper;
[0012] The label backing paper containing the label, released from the label release roll, passes through the first transition shaft, the tension detection shaft, the second transition shaft, the label peeler, and the third transition shaft, and is then wound onto the label recycling roll; characterized in that...
[0013] It also includes an electromagnetic brake mounted on the frame for controlling the tag release drum's movement and stopping; the main control board also has an electromagnetic brake control drive circuit, which is used to drive the electromagnetic brake to brake and release.
[0014] When a label needs to be fed, the main control board sends a control signal to drive the take-up roll motor to rotate, pulling the label forward and simultaneously moving the tension detection shaft from point A to point B. The label tension begins to increase. When the tension value reaches a certain value, the main control board sends a control signal to release the electromagnetic brake, allowing the new roll of label to be pulled by the tension detection shaft, thus moving the tension detection shaft from point B to point A and reducing the label tension. When the label tension reaches a certain value, the main control board sends a braking command to control the electromagnetic brake to stop the rotation of the new roll of label. By repeating this cycle, the label tension value can be controlled within a certain range, reducing the swing range of the tension shaft.
[0015] In a preferred embodiment of this utility model, the control circuit of the main control board consists of a CPU, FPGA, RAM and peripheral circuits. The control circuit is connected to the motor drive circuit, the electromagnetic brake drive circuit, the tension detection circuit and the U-groove sensor.
[0016] In a preferred embodiment of the present invention, the tension detection circuit comprises a magnetic field angular displacement sensor and a magnetic sheet mounted on the tension detection shaft.
[0017] In a preferred embodiment of this utility model, the recycling motor is a stepper motor.
[0018] By adopting the above technical solution, this utility model uses an electromagnetic brake to control the braking and release of the new roll of labels, making the length and frequency of label release controllable. It is more intelligent, can monitor the status of the labels, and makes the overall structure simpler, the control more precise, and the performance more reliable, with virtually no wear parts. Attached Figure Description
[0019] Figure 1 This is a schematic diagram illustrating the principle of the labeling machine with an electromagnetic brake according to this utility model. Detailed Implementation
[0020] See Figure 1The labeling machine with an electromagnetic brake shown in the figure includes a frame 10, which also includes: a take-up motor 20, an electromagnetic brake 30, a label take-up roll 40, a label release roll 50, a tension detection shaft 60, a main control board 70, a first transition shaft 81, a second transition shaft 82, a third transition shaft 83, a U-groove sensor 90, and a label peeler 100.
[0021] The recycling roll motor 20 is mounted on the frame 10 to drive the tag recycling roll 40 to rotate; the recycling roll motor 20 is a stepper motor.
[0022] An electromagnetic brake 30 is mounted on the frame 10 to control the movement and stopping of the label release drum 50.
[0023] The tension detection shaft 60 is floatingly mounted on the frame 10, for example, using a swing mechanism. The tension detection shaft 60 outputs a force signal, which is detected by a force detection circuit. The tension detection circuit consists of a magnetic field angular displacement sensor and a magnetic plate mounted on the tension detection shaft 60. The magnetic field angular displacement sensor detects the angular position and angular displacement of the magnetic plate on the tension detection shaft 60, and the specific label travel distance is obtained from the angular displacement.
[0024] The main control board 70 has a motor drive circuit 71 and an electromagnetic brake control drive circuit 72. The motor drive circuit 71 is used to drive the rewind motor 20 and performs different controls on the rewind motor 20, such as running, stopping, high speed, low speed, forward rotation, and reverse rotation.
[0025] The electromagnetic brake control drive circuit 72 is used to drive the electromagnetic brake 30 to brake and release. The control circuit of the main control board 70 consists of a CPU, FPGA, RAM and peripheral circuits. The control circuit is connected to the motor drive circuit 71, the electromagnetic brake control drive circuit 72, the tension detection circuit and the U-groove sensor 90.
[0026] The first transition shaft 81, the second transition shaft 82, the third transition shaft 83, and the U-groove sensor 90 are all mounted on the frame 10. The U-groove sensor 90, which is used on the frame 10 to detect whether there is a label entering the label peeler 100, is connected to the tension detection circuit in the main control board 70.
[0027] The label peeler 100 is mounted on the frame 10 and peels the label off the label backing paper 110;
[0028] The label backing paper 110 containing the label, released from the label release roll 50, passes through the first transition shaft 81, the tension detection shaft 60, the second transition shaft 82, the label peeler 100, and the third transition shaft 83, and is then wound onto the label recycling roll 40.
[0029] When a label needs to be fed, the main control board 70 sends a control signal to drive the take-up motor 20 to rotate, pulling the label forward and simultaneously moving the tension detection shaft from point A to point B. The label tension begins to increase. When the tension value reaches a certain value, the main control board 70 sends a control signal to release the electromagnetic brake 30, allowing the new roll of label to be pulled by the tension detection shaft 60, thus moving the tension detection shaft 60 from point B to point A and reducing the label tension. When the label tension reaches a certain value, the main control board 70 sends a braking command to control the electromagnetic brake 30 to stop the rotation of the new roll of label. By repeating this cycle, the label tension value can be controlled within a certain range, reducing the swing range of the tension shaft.
[0030] Furthermore, by monitoring the changes in the level signal returned by the U-groove sensor 90, the presence of tags and the absence of tags (such as tags with gaps) can be identified. By monitoring these three states, the rotation steps of the take-up motor 20 of the tag take-up drum 40 and the tag release drum 50 are adjusted to control the stopping position and accuracy of each tag. Simultaneously, when a tag is missing, it can be detected promptly, and the rotation of the take-up motor 20 and the electromagnetic brake 30 are used to control the stop and start of the tag release drum 50, quickly rotating out the missing portion to avoid missing tags. When a tag breaks, the main control board 70 can detect an abnormal level signal returned by the U-groove sensor 90 and issue a fault alarm.
Claims
1. A labeling machine with an electromagnetic brake, comprising: frame: A recycling roll motor mounted on the frame for driving the label recycling roll to rotate; A tension detection shaft is floating on the frame, and the tension detection shaft outputs a force signal, which is detected by a force detection circuit. A main control board, the main control board having a motor drive circuit, the motor drive circuit being used to drive the recycling roll motor to work; The first transition shaft, the second transition shaft, and the third transition shaft are mounted on the frame; A U-shaped groove sensor is installed on the rack to detect the presence or absence of a label, and the U-shaped groove sensor is connected to the main control board; A label peeler is mounted on the frame and located at the end of the U-shaped groove sensor, the label peeler peels the label off the label backing paper; The label backing paper containing the label, released from the label release roll, passes through the first transition shaft, the tension detection shaft, the second transition shaft, the label peeler, and the third transition shaft, and is then wound onto the label recycling roll; characterized in that... It also includes an electromagnetic brake mounted on the frame for controlling the tag release drum's movement and stopping; the main control board also has an electromagnetic brake control drive circuit, which is used to drive the electromagnetic brake to brake and release. When a label needs to be fed, the main control board sends a control signal to drive the take-up roll motor to rotate, pulling the label forward and simultaneously moving the tension detection shaft from point A to point B. The label tension begins to increase. When the tension value reaches a certain value, the main control board sends a control signal to release the electromagnetic brake, allowing the new roll of label to be pulled by the tension detection shaft, thus moving the tension detection shaft from point B to point A and reducing the label tension. When the label tension reaches a certain value, the main control board sends a braking command to control the electromagnetic brake to stop the rotation of the new roll of label. By repeating this cycle, the label tension value can be controlled within a certain range, reducing the swing range of the tension shaft.
2. A labeling machine with an electromagnetic brake according to claim 1, characterized in that, The control circuit of the main control board consists of a CPU, FPGA, RAM and peripheral circuits. The control circuit is connected to the motor drive circuit, the electromagnetic brake drive circuit, the tension detection circuit and the U-groove sensor.
3. A labeling machine with an electromagnetic brake according to claim 1, characterized in that, The tension detection circuit comprises a magnetic field angular displacement sensor and a magnetic sheet mounted on the tension detection shaft.
4. A labeling machine with an electromagnetic brake according to claim 1, characterized in that, The rewind motor is a stepper motor.