Control device for a hand-held packaging machine

Abstract

The application provides a control device of a hand-held packing machine, a jog switch is arranged at the lower front part of a gripping handle, and the starting of a steering engine motor is controlled by the jog switch; the controller always detects the jog switch signal, once the signal that the corresponding jog switch is opened is detected, it is judged whether the travel detection switch is in place, if not, the steering engine motor is controlled to run in the unlocking direction, and if the signal that the corresponding jog switch is opened is not detected, the steering engine motor is controlled to run in the corresponding locking direction. The application can control by the jog switch, can enter the locking state according to the need for the hand-held packing machine with the belt, so as to solve the problem of belt dropping and ensure the quality; the jog switch is arranged at the lower front part of the gripping handle of the hand-held packing machine, can be very convenient to operate in the hand-held state, is convenient for timely operation and continuous pressing of the jog switch according to the need, and the operation of the hand-held packing machine is more flexible.

Description

Technical Field

[0001] This invention relates to a control device for a handheld packing machine, and more particularly to the field of switch arrangement for a handheld packing machine. Background Technology

[0002] A handheld packing machine is a portable device used to conveniently carry items to the work site for bundling. Currently, there is a type of handleless handheld packing machine that does not have a lifting or rotating handle for control. Instead, it is controlled via buttons. In fully automatic mode, locking, tightening, welding, and unlocking can be achieved with a single press of a button.

[0003] However, in actual use, for the operation of strapping the top of the packaged object, the loading of straps is usually done while the handheld strapping machine is in the handheld position, while the tightening and welding work requires placing the handheld strapping machine on the packaged object. In fully automatic mode, pressing the fully automatic button on the handheld strapping machine once activates the locking and unlocking servo motor, tension wheel motor, and welding motor in sequence. Therefore, when the handheld strapping machine is released from the hand, the straps are not yet locked and are prone to falling out of the handheld strapping machine or shifting and becoming misaligned, affecting the quality of the strapping. Summary of the Invention

[0004] The purpose of this invention is to provide a control device for a handheld packing machine, offering a solution for handheld packing machines that use a non-lifting rotary handle control, thereby improving the success rate of packing and ensuring quality, at least during the packing operation. To this end, this invention adopts the following technical solution:

[0005] A control device for a handheld packing machine, the handheld packing machine including a gripping handle, a servo motor, a tensioning belt working motor, and a welding working motor, characterized in that a jog switch is provided at the lower front of the gripping handle, the jog switch is connected to the controller of the handheld packing machine, the starting of the servo motor is controlled independently by the jog switch, after the machine is turned on, the controller constantly detects the jog switch signal, once a signal of the corresponding jog switch being turned on is detected, it determines whether the travel detection switch is in position, if not in position, it controls the servo motor to run in the unlocking direction, if no signal of the corresponding jog switch being turned on is detected, it controls the servo motor to run in the corresponding locking direction; the travel detection switch detects whether the swing arm rotates to a limited angle in the unlocking direction.

[0006] Based on the above technical solutions, the present invention may also employ the following further technical solutions, or combine these further technical solutions:

[0007] The position of the jog switch corresponds to the position suitable for index finger operation when the hand is gripping the handle.

[0008] The jog switch is a self-resetting type switch.

[0009] The handheld packing machine is also equipped with a second switch, which is connected to the controller. The second switch serves as the start switch for automatic tensioning and automatic continuous welding modes; the second switch is not responsible for starting and stopping the servo motor.

[0010] The handheld packing machine is also equipped with a third switch, which is connected to the controller. The third switch serves as the start switch for the welding motor in the tensioning and welding separate control modes. The second switch serves as the start switch for the tensioning motor in the tensioning and welding separate control modes. The third switch is not responsible for starting and stopping the servo motor.

[0011] When the servo motor is running in the unlocked direction, it will shut down after a set time; when the servo motor is running in the locked direction, it will shut down after a set time.

[0012] When the servo motor is running in the unlocked direction or in a stopped state, if the controller does not detect the signal that the corresponding jog switch is turned on, it will control the servo motor to run in the locked direction.

[0013] When the servo motor is running in the locked direction, once the controller detects that the corresponding jog switch is turned on, it will control the servo motor to stop. When stopping, if the corresponding jog switch is turned on, it will determine whether the travel detection switch is in position. If it is not in position, it will control the servo motor to run in the unlocked direction.

[0014] The controller uses a microcontroller.

[0015] The grip handle is a fixed handle.

[0016] By employing the technical solution of this invention, the self-resetting switch of the servo motor of the handheld packing machine without a lifting handle can be individually controlled. This allows the machine to be locked even while still in a handheld position, as needed, thus solving the problem of strap falling off and ensuring quality. During operation, the self-resetting switch can be activated at any time to unlock, providing a rapid and timely emergency safety function. The self-resetting switch is located on the lower front side of the grip handle of the handheld packing machine, making it very convenient to operate while holding the machine, facilitating timely operation and making the operation of the handheld packing machine more flexible.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1This is a three-dimensional schematic diagram from one angle of an embodiment of the present invention.

[0019] Figure 2 This is a three-dimensional schematic diagram from another angle of an embodiment of the present invention.

[0020] Figure 3 This is a three-dimensional schematic diagram of an embodiment of the present invention when the subject is lying down.

[0021] Figure 4 An exploded view of an embodiment of the hand-held packing machine of the present invention.

[0022] Figure 5 This is a system principle block diagram of the present invention.

[0023] Figure 6 This is a flowchart of the self-reset switch control of the present invention. Detailed Implementation

[0024] Referring to the attached diagram, the hand-held packing machine without a lifting and rotating handle includes a fixed gripping handle 100, a servo motor 200, a tension strap working motor (obscured by the casing and not shown) and a welding working motor 300. The servo motor 200 drives the servo motor to rotate clockwise or counterclockwise, thereby driving the first actuator 11 to rotate clockwise or counterclockwise. When rotating counterclockwise, it drives the second actuator 12 to rotate clockwise, driving the swing arm 500 to open (unlock) through the associated part 122 on the second actuator 12, and compressing the spring 501 through the pressure block 121 on the second actuator 12. Reference numeral 503 is a travel detection switch, which cooperates with the second actuator 12 to prevent the swing arm 500 from rotating too far and to provide signal feedback. When locked, the first actuator 11 is driven clockwise by the servo motor 100, and the second actuator 12 is driven counterclockwise by the spring. This, through the connecting part 122, causes the swing arm 500 to rotate in the opposite direction to the locking angle. At this locking angle, the strap is clamped by the tension wheel of the tensioning station 401 of the handheld strapping machine and the toothed plate connected to the swing arm below it, preventing it from falling out of the strapping machine. When the swing arm rotates to the contact locking angle, the toothed plate disengages from the tension wheel, allowing the strap to be loaded into or removed from the handheld strapping machine. Reference numeral 402 indicates the welding station.

[0025] The handheld packing machine control device of the present invention has a jog switch located on the lower front side of the grip handle 100. The jog switch is a self-resetting switch 20, which is activated by jog operation and automatically resets to close after the jog is released. The self-resetting switch 20 is connected to the controller of the handheld packing machine, and the starting of the servo motor 200 is controlled independently by the self-resetting switch 20. The controller is a microcontroller.

[0026] like Figure 6As shown, after power-on, the controller continuously monitors the self-reset switch signal. Once it detects that the corresponding self-reset switch 20 is activated, it determines whether the travel detection switch 503 is in position (whether it is activated by the second actuator 12). If it is not in position, it controls the servo motor 200 to run in the unlocked direction. Figure 4 As shown, the first actuator 11 rotates counterclockwise, and the second actuator 12 and the swing arm 500 are driven to rotate clockwise to open; if no signal is detected that the corresponding self-resetting switch is turned on, the servo motor 200 is controlled to run in the corresponding locking direction, and the first actuator 11 disengages from the second actuator 12, as... Figure 4 As shown, the second actuator 12 and the swing arm 500 can rotate counterclockwise under the action of the compression spring 501; the stroke detection switch 503 is used to detect whether the swing arm 500 has rotated to the limit angle in the unlocking direction.

[0027] The handheld packing machine is also equipped with a second switch 22, which is connected to the controller. The second switch 22 serves as the start switch for the automatic tensioning and welding continuous automatic mode. After start-up, the tensioning belt motor and the welding motor 300 operate in sequence according to a set time. The second switch 22 is not responsible for starting or stopping the servo motor 200.

[0028] The handheld packing machine is also equipped with a third switch 23, which is connected to the controller. The third switch serves as the start switch for the welding motor in the tensioning and welding separate control mode. In the tensioning and welding separate control mode, the second switch 22 serves as the start switch for the tensioning motor 300. The third switch 23 is not responsible for starting and stopping the servo motor 200.

[0029] When the servo motor is running in the unlocked direction, the timing of its shutdown is determined by time or current intensity. The servo motor shuts off when the set time or current intensity exceeds a certain value. Similarly, when the servo motor is running in the locking direction, the timing is also determined by time or current intensity; the servo motor shuts off when the set time or current intensity exceeds a certain value. Because the controller is constantly monitoring the signal from the self-resetting switch, this method not only reduces the number of sensors but also ensures the normal operation of the handheld packing machine.

[0030] When the servo motor 200 is running in the unlocking direction or in a stopped state, if the controller does not detect the signal that the corresponding self-reset switch 20 is turned on, it will control the servo motor 200 to run in the locking direction. In this way, after the strapping is loaded, the handheld strapping machine can be put into the locking state by releasing the fingers, making operation more convenient. Normally, the handheld strapping machine is always in the locking state, which can protect the internal structure and can be attached to the strap when there is strapping, preventing the handheld strapping machine from being knocked off.

[0031] When the servo motor 200 is running in the locking direction (at which time the finger is not touching the self-reset switch 20), in case of an emergency, simply touch the self-reset switch 20 immediately. The controller detects the signal that the corresponding self-reset switch 20 is open and controls the servo motor 200 to stop. When it stops, it returns to the aforementioned situation. If the controller detects the signal that the corresponding self-reset switch 20 is open, it determines whether the travel detection switch 503 is in position. If it is not in position, it controls the servo motor 200 to run in the unlocking direction. If it does not detect the signal that the corresponding self-reset switch 20 is open, it controls the servo motor 200 to run in the corresponding locking direction to return to the locked state, so that it can start working immediately as needed.

[0032] The optimal position for the self-resetting switch 20 is such that it is positioned so that the index finger can easily operate it when the hand is holding the grip handle 100.

[0033] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the protection scope of the present invention.

Claims

1. A control device for a handheld packing machine, the handheld packing machine comprising a gripping handle, a servo motor, a tensioning belt working motor, and a welding working motor, wherein the servo motor is used to drive the servo motor to rotate forward or reverse, and when rotating forward, the swing arm is driven to rotate to the locking angle, and the strap is clamped by the tensioning wheel of the tensioning station of the handheld packing machine and the toothed plate connected to the swing arm below it, so that it cannot fall out of the packing machine; when rotating in reverse, the swing arm is driven to rotate by a spring, and when the swing arm rotates to the unlocking angle, the toothed plate leaves the tensioning wheel, so that the strap can be loaded into or taken out of the handheld packing machine; Its features are, A jog switch is installed on the lower front side of the grip handle. The jog switch is a self-resetting type switch. The jog switch is connected to the controller of the handheld packing machine. The start of the servo motor is controlled independently by the jog switch. After the machine is turned on, the controller always detects the jog switch signal. Once the corresponding jog switch is detected as being turned on, it determines whether the travel detection switch is in position. If it is not in position, the controller controls the servo motor to run in the unlocking direction. If the corresponding jog switch is not detected as being turned on, the controller controls the servo motor to run in the corresponding locking direction. The travel detection switch detects whether the swing arm of the handheld packing machine has rotated to the limit angle in the unlocking direction. When the servo motor is running in the unlocked direction, the timing of its shutdown is determined by time or current intensity. When the set time or current intensity exceeds a certain value, the servo motor shuts down. Similarly, when the servo motor is running in the locked direction, the timing is also determined by time or current intensity. When the set time or current intensity exceeds a certain value, the servo motor shuts down. When the servo motor is running in the unlocked direction or in a stopped state, if the controller does not detect a signal indicating that the corresponding self-reset switch is open, it controls the servo motor to run in the locked direction. When the servo motor is running in the locked direction, if the controller detects a signal indicating that the corresponding self-reset switch is open, it controls the servo motor to stop. If a signal indicating that the corresponding jog switch is open is detected during stopping, the controller checks if the travel detection switch is in position. If it is not in position, it controls the servo motor to run in the unlocked direction.

2. The control device for a handheld packing machine as described in claim 1, characterized in that... The position of the jog switch corresponds to the position suitable for index finger operation when the hand is gripping the handle.

3. The control device for a handheld packing machine as described in claim 1, characterized in that... The handheld packing machine is also equipped with a second switch, which is connected to the controller. The second switch serves as the start switch for automatic tensioning and automatic continuous welding modes; the second switch is not responsible for starting and stopping the servo motor.

4. The control device for a handheld packing machine as described in claim 3, characterized in that... The handheld packing machine is also equipped with a third switch, which is connected to the controller. The third switch serves as the start switch for the welding motor in the tensioning and welding separate control modes. The second switch serves as the start switch for the tensioning motor in the tensioning and welding separate control modes. The third switch is not responsible for starting and stopping the servo motor.

5. The control device for a handheld packing machine as described in claim 1, characterized in that... The controller uses a microcontroller.

6. The control device for a handheld packing machine as described in claim 1, characterized in that... The grip handle is a fixed handle.

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