Handheld electric packing machine

1. A hand-held electric packing machine, comprising a strap press structure, a vibrating component, a cutter, a strap press spacer matching the strap press structure, the strap press structure is connected to the vibrating component or is a part of a vibrating component, wherein the vibrating component is a swinging vibrating component capable of rising and falling, the hand-held electric packing machine is provided with a downward pressing mechanism and a rising reset mechanism for the vibrating component, the vibrating component swings leftward and rightward relative to the lengthwise direction of a packing strap, the hand-held electric packing machine is provided with a leftward and rightward swing driving device for the vibrating component;

the hand-held electric packing machine is further provided with a manually downward pressing operating mechanism with a lock, so that the downward pressing operating mechanism is locked when the vibrating component is pressed downwards till the strap press structure is located at a strap press position, and thus the downward pressing operating mechanism cannot retreat after the manually downward pressing is removed, and

the downward pressing operating mechanism comprises a welding operating button, a cam attached to the welding operating button, a rotatable bracket, a downward pressing component extending through the bracket and a cam-engaging component on the bracket,

the cam is driven to rotate by the welding operating button,

the cam contacts the cam-engaging component on the bracket during rotation of the cam,

rotation of the cam presses the cam-engaging component on the bracket downwardly, causing the bracket to pivot along a plane parallel to a plane in which the cam rotates,

pivoting of the bracket causes the downward pressing component to directly contact and act on the downward pressing mechanism for the vibrating component.

2. The hand-held electric packing machine according to claim 1 , wherein

the cam surface of the cam has a lock portion, when the vibrating component is pressed down till the strap press structure is located at the strap press position, and the lock portion comes into contact with the cam-engaging component to form locking.

3. The hand-held electric packing machine according to claim 2 , wherein the downward pressing mechanism employs a downward pressing piston, the vibrating component is hinged to the downward pressing piston; the downward pressing component on the bracket flexibly presses downwards the downward pressing piston, and the downward pressing piston has a rising reset spring.

4. The hand-held electric packing machine according to claim 2 , wherein the downward pressing mechanism employs a downward pressing piston, the vibrating component is hinged to the downward pressing piston; the downward pressing component on the bracket is supported on the bracket by a compressed spring, the downward pressing component flexibly presses the downward pressing piston, and the downward pressing piston has the rising reset spring.

5. The hand-held electric packing machine according to claim 2 , wherein the downward pressing component has a guide rod portion and a cap-shaped pressing head at the lower end of the guide rod portion.

6. The hand-held electric packing machine according to claim 1 , wherein the downward pressing mechanism employs a downward pressing piston, the vibrating component is hinged to the downward pressing piston, and the downward pressing piston has a rising reset spring.

7. The hand-held electric packing machine according to claim 1 , wherein the strap press structure is formed at the bottom end of the vibrating component, and the lower portion of the vibrating component is provided with a mounting hole for a cutter connecting shaft, an outer sleeve of the cutter connecting shaft has a bearing and is in clearance fit with the mounting hole, and the hand-held electric packing machine is further provided with an upper and downward moving guiding structure for the cutter.

8. The hand-held electric packing machine according to claim 1 , wherein the leftward and rightward swing driving device comprises a driving motor and an eccentric shaft, the eccentric shaft is provided externally with a bearing, and the vibrating component is provided with a hole matching a bearing gap, and pushes leftwards and rightwards the wall of the hole by the circular motion of the bearing under the drive of the eccentric shaft to performs vibration.

9. The hand-held electric packing machine according to claim 1 , wherein the hand-held electric packing machine is provided with a microswitch or an inductive switch, a structure in a manually downward depressing operating mechanism controls the microswitch or induces the inductive switch, the microswitch or the inductive switch control the driving motor in the leftward and rightward swing driving device; the position of the microswitch or the inductive switch corresponds to the position of the structure matching the microswitch or the inductive switch when the vibrating component presses downwards till the strap press structure is located at the strap press position.

10. The hand-held electric packing machine according to claim 1 , wherein the hand-held electric packing machine is provided with a pressing rod supported by a compressed spring, and the pressing rod acts as the reset structure of the manually downward pressing operating mechanism.

11. The hand-held electric packing machine according to claim 1 , wherein a direction in which the downward pressing component extends and a direction in which the vibrating component extends are non-coaxial with respect to each other.

12. The hand-held electric packing machine according to claim 1 , wherein the downward pressing component is not provided on a direction in which the vibrating component extends.