Welding device for portable packaging machine with handle

Abstract

The present invention provides a welding device for a packaging machine with a handle, wherein the motor drives the downward movement of a movable welding member with a push-down / lifting motion component, the welding device has a reciprocating position movement connecting member that can move up and down simultaneously with the movable welding work member, the connecting member is mounted on a rotating member, a reset drive member is connected to the handle, a sensor is installed in the portable packaging machine, and when the welding work is finished, the motor starts to reverse in response to a signal from the sensor, and the gears connected to the motor and the transmission teeth working on the rotating member are switched from a disengaged state to a meshed state. The present invention allows a reset operation on the movable welding work member to be performed by operating the handle of the belt tensioning device, and through signal control, a portable packaging machine using handle operation can also achieve a smooth transition from disengagement to meshing, eliminating the need for a separate reset connection mechanism that controls the start and stop times with a program using a one-way bearing and a reversing gear.

Description

Technical Field

[0004]

[0001] The present invention relates to a welding device, and particularly to a packing belt welding device for a portable packing machine with a handle.

Background Art

[0002] In a portable electric packing machine, a packing belt made of PET or PP is used to tie up a packed product or a packing member. Two parts of the packing belt to be joined are heat-melted and adhered by a method of friction heating. In the case of a portable packing machine with a handle, by lifting or lowering the handle, the belt tensioning device is put into a belt slack working state or a belt tension state, and when the handle is lifted, the movable welding working member is also lifted together. When the welding device adopts a single-motor drive form, that is, when the single-motor drive form is adopted for the vibration drive and the drive for pressing the movable welding member downward, when the movable welding working member is reset and lifted, a connection transition of detachment and engagement is required between the pressing-lifting movement component and the motor drive gear. Conventionally, a portable packing machine with a handle using a single-motor drive for the welding device has solved the problem by using elastic teeth or a tooth feeding / returning method, but the effect is insufficient, and an uncomfortable sense of stagnation often appears during the connection transition.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The present invention aims to provide a welding device for a portable packing machine with a handle, so that when the movable welding working member is reset, the movable welding working member in the welding device is lifted and reset by the handle, the operation of the handle is made smoother, and the structure is also made simpler.

Means for Solving the Problems

[0004] A welding apparatus for a portable packaging machine with a handle, wherein the portable packaging machine is equipped with a handle of a tension mechanism. The welding apparatus comprises a movable welding work member, a motor, and a push-down / lift motion component for the movable welding work member. The push-down / lift motion component comprises a rotating member. The rotating member meshes with a gear connected to the motor via transmission teeth. The motor drives the movable welding work member downwards via the push-down / lift motion component, and the welding apparatus has a reciprocating connecting member that can move up and down simultaneously with the movable welding work member. The welding apparatus is provided with a reset drive member. The reset drive member is connected to the handle, and the position where the connecting member is placed corresponds to the drive member. When the movable welding work member is placed in the welding position, the connecting member is positioned on the movement path of the reset drive member when the handle is lifted. A welding device for a portable packaging machine with a handle, characterized in that when the handle is lifted, it is actuated by the reset drive member to move in a first direction, and actuated by the push-down / lift motion component to reset the welding work member to its initial position, the portable packaging machine is provided with a sensor, and when the welding work is finished, the motor starts to reverse in response to the signal from the sensor, and the transmission teeth working on the rotating member and the gear connected to the motor are switched from a disengaged state to a meshed state.

[0005] In addition to utilizing the above-described technical means, the present invention may also utilize the following further technical means or a combination of these further technical means.

[0006] The push-down / lifting motion component is equipped with a lifting component and a connecting rod mechanism. The lower end of the connecting rod mechanism is rotatably connected to the rotating member at a position away from the rotation center of the rotating member, and the upper end is movably connected to the lifting component. A movable welding work member is attached to the lower end of the lifting component.

[0007] A limit fitting member is provided on the rotating member, with a stroke that allows the rotating member to rotate in a second direction. The second direction is opposite to the first direction and is the rotational direction for lowering the movable welding member. The limit fitting member is fitted with a fixed limit structure and limits the maximum angle by which the rotating member rotates in the second direction.

[0008] The handle and the reset drive member are connected by a rotating connection structure. The rotation axis of the reset drive member is perpendicular to the rotation axis of the handle and parallel to the rotation axis of the rotating member.

[0009] The pivot connection structure includes a first pivot arm and a second pivot arm. The reset drive member is fixed to the second pivot arm, the first pivot arm is rotatably connected to a handle and located below the handle, the first end of the second pivot arm and the first pivot arm are rotatably connected by a lifting first shaft, the first shaft being perpendicular to the rotation axis of the handle. The second end of the second pivot arm is rotatably connected to a base via a second shaft.

[0010] The welding apparatus is further equipped with a second sensor. The position of the second sensor corresponds to the position of the limit structure immediately after the limit fitting member moves away from the fitting position of the limit structure in the first direction. The second sensor, together with the first sensor which detects the operation of the handle, forms coordinated control for the motor.

[0011] The connecting member is connected to the rotating member.

[0012] The power source for the vibration component of the welding apparatus originates from the motor, which is connected to the transmission mechanism. The welding apparatus is equipped with a separate vibration component drive motor. The second sensor detects the moment the limit fitting member has just released, corresponding to the position where the limit fitting member moves in the first direction from the fitting position of the limit structure.

[0013] The control of the aforementioned packaging machine is as follows: Once one packing cycle is complete and the belt has been removed, the handle is released, the tension mechanism is placed in the pulling position, the movable welding work member is placed in its initial position, and the reset drive member is placed away from the connecting member. When a new packing cycle begins, the handle is lifted and the belt loosens. At this point, the handle is lifted, and the connecting member is positioned precisely at the end of the reset drive member's movement path. After inserting the packing belt, when the handle is released, the tension mechanism is placed in the pulling position, the tension mechanism motor is activated, and the belt pulling operation is performed, and the reset drive member moves further away from the connecting member. Once the belt pulling operation is complete, the welding machine's motor is started, activating the rotating member to rotate in the second direction, the movable welding member is lowered to the welding position, the transmission teeth on the rotating member and the gear connected to the motor disengage, the connecting member moves together with the rotating member just in front of the reset drive member, and when the handle is lifted again, the rotating member is actuated by the reset drive member to move in the first direction, the welding machine's motor continues to operate and welding is performed. After the welding work is finished, when the handle is lifted, the motor reverses in response to a sensor signal, stopping when the transmission teeth on the rotating member and the gears connected to the motor mesh. The rotating member is then driven by the drive member to rotate, the lifting component rises in a chain reaction, and the movable welding work member rises to its initial position. Simultaneously with the upward movement, the tension mechanism is lifted, and the packing belt is removed. When the handle is loosened, the handle's rotation is released, activating the reset drive component and causing it to detach from the connecting component again, automatically entering the next packing cycle. Includes.

[0014] The aforementioned coordinated control uses a second sensor to acquire a second signal indicating that the limit fitting member has left the limit structure, and at this time, it means that the rotating member has already begun reset rotation. The aforementioned coordinated control system uses a first sensor to acquire a first signal indicating that the handle is beginning to lift, and after welding is complete, it acquires a first signal indicating that the belt needs to be removed. When the first signal is acquired, the motor is reversed by a small angle, and when the second signal is acquired, the rotation of the motor is stopped. [Effects of the Invention]

[0015] By utilizing the technical means of the present invention, a reset operation can be performed on the movable welding work member by operating the handle of the belt tensioning device, and through signal control, a portable packaging machine using handle operation can also achieve a smooth transition from disengagement to engagement, eliminating the need for a separate reset connection mechanism that controls the start and stop times with a program using a one-way bearing and a reverse gear. [Brief explanation of the drawing]

[0016] [Figure 1a] Figure 1a is a schematic diagram illustrating the switching from engagement to release in different working states according to the present invention. [Figure 1b] Figure 1b is a schematic diagram illustrating the switching from engagement to release in different working states according to the present invention. [Figure 2] Figure 2 is a schematic exploded view of an embodiment of the present invention. [Figure 3] Figure 3 is a schematic diagram of the structure of an embodiment of the present invention viewed from a different angle. [Figure 4] Figure 4 is a schematic diagram of the structure of an embodiment of the present invention viewed from a different angle. [Figure 5] Figure 5 is a cross-sectional view showing the structure of the welding mechanism of the embodiment of the present invention when it returns to the welding state and the initial position. [Figure 6] Figure 6 is a cross-sectional view showing the structure of the welding mechanism of the embodiment of the present invention when it returns to the welding state and the initial position.

Best Mode for Carrying Out the Invention

[0017] Figures 1a and 1b are schematic diagrams showing the switching from engagement to release in different operating states of the present invention. S1 shows the initial state of the entire machine. In this state, the handle 100 is lowered. The tension mechanism is placed at the pulling operation position. The movable welding working member 21 is placed at the initial position. The reset driving member 6 is at a position away from the connecting member 5. S2 shows the state of lifting the handle and releasing the belt. In this state, the handle 100 is lifted, but the connecting member 5 is exactly located at the end point of the movement path of the reset driving member 6, and the welding device does not affect the lifting of the tension mechanism and does not interfere. S3 shows the positions of the components in the tension working state. At this position, the handle is released, the tension mechanism motor 300 is activated, and the belt pulling operation is performed. At this time, the reset driving member 6 is again at a position away from the connecting member 5. S4 shows the positions of the members in the welding working state. When the pulling operation ends, the welding motor 1 is activated to operate the rotating member 71 to rotate in the second direction. The movable welding working member 21 descends to the welding working position, and the transmission teeth 711 and the gear 11 are disengaged. The connecting member 5 moves together with the rotating member 71 exactly to the front of the reset driving member 6 (when the handle 100 is lifted again, it moves in the first direction together with the reset driving member 6). The welding motor 1 continues to operate to perform welding. S5 shows the removal of the belt and the reset state of the welding device after the welding operation. When the handle 100 is lifted, the rotating member is actuated by the driving member to rotate, causing the interlocking operation of the connecting rod mechanism. The lifting and lowering component rises, and the movable welding working member 21 rises to the initial position. At the same time, the tension mechanism is lifted, and the packaging belt is taken out. S6 indicates that after S5, the handle is released, the handle rotates and descends, the drive member is activated and the connecting member is driven to separate again, and the process automatically enters the next packing cycle.

[0018] Figure 2 is a schematic exploded view of an embodiment of the present invention.

[0019] Figures 3 and 4 are schematic diagrams of the structure of embodiments of the present invention viewed from different angles.

[0020] Figures 5 and 6 are cross-sectional views showing the structure of the welding mechanism of the embodiment of the present invention when it is in the welding state and when it has returned to its initial position, respectively.

[0021] As shown in the drawings, the present invention provides a welding device for a portable packaging machine with a handle. The portable packaging machine is equipped with a handle 100 with a tension mechanism. The handle 100 is mounted on the base 200 of the portable packaging machine so as to be rotatable. The tension mechanism is not the subject of the present invention and is therefore not shown. The tension mechanism is connected to the handle 100. During operation, the tension mechanism rises when the handle 100 is lifted. At this time, the belt can be attached and detached. When the belt has been attached or detached, the handle 100 is released, and the tension mechanism and the handle 100 rotate downward by gravity, and the tension mechanism rotates to the pulling position.

[0022] The welding apparatus includes a movable welding work member 21, a motor 1, and a push-down / lifting motion component for the movable welding work member 21. The movable welding work member 21 is attached to the lower end of the lifting component 3 of the push-down / lifting motion component.

[0023] The welding apparatus has a lower fixed welding plate 22 positioned below the movable welding work member 21. When the movable welding work member 21 descends to the packing belt pressing joint that engages with the lower fixed welding plate 22, it acts on the lifting component 3 of the vibration component 4 of the welding apparatus, generating vibration. This vibration is then transmitted to the movable welding work member 21, causing it to vibrate and frictionally bond the packing belt. The structure of the push-down / lifting motion component, the vibration component 4, the movable welding work member 21, and the lower fixed welding plate 22 all utilize conventional technology.

[0024] The push-down / lifting motion component is provided with a rotating member 71, and the rotating member 71 is provided with transmission teeth 711. The transmission teeth 711 mesh with the gear 11 of the motor 1. When the movable welding work member 21 is pushed down, it disengages from the meshed state. When the movable welding work member 21 is reset, it reverts from the disengaged state to the meshed state. The motor 1 drives the downward movement of the lifting component 3 through the push-down / lifting motion component. The upward movement of the lifting component 3 is actuated by the lifting of the handle 100 and is the same operation as the lifting of the tension mechanism. Therefore, not only is operation very convenient, but a chain reaction effect is also produced, preventing errors from occurring during packaging.

[0025] The welding apparatus is provided with a reciprocating connecting member 5 that can move up and down simultaneously with the movable welding work member 21. The connecting member 5 is mounted on a rotating member 71, and the welding apparatus is provided with a reset drive member 6. The reset drive member 6 is connected to the handle 100. The position of the connecting member 5 corresponds to the drive member 6. When the movable welding work member 21 is placed in the welding work position, the connecting member 5 is positioned on the movement path of the reset drive member 6 when the handle 100 is lifted. When the handle is lifted, it is actuated by the reset drive member 6 to move in the first direction. In this embodiment, at this time, the rotating member 71 rotates along the clockwise direction, and the movable welding work member 21 is returned to its initial position by the push-down / lifting motion component (see Figure 6).

[0026] The push-down / lift-up motion component is further provided with a connecting rod mechanism. The lower end of the connecting rod mechanism is rotatably connected to a rotating member 71 at a position away from the rotation center of the rotating member 71, and the upper end is movably connected to the upper end of the lifting component 3.

[0027] The connecting rod mechanism of the push-down / lifting motion component includes a first lever 31 and a second connecting rod. The first lever is rotatably connected to the top of the base 200 by an axle pin 33. The first end of the first lever 31 is rotatably connected to the top of the lifting component 3. The second end of the first lever 31 is rotatably connected to the upper end of the second connecting rod. The lower end of the second connecting rod is rotatably connected to the pivot member 71 via a pivot connecting shaft 74 at a position away from the rotation center of the pivot member 71. The second connecting rod is preferably an elastic rod. The second connecting rod includes an upper connecting rod 321 and a lower connecting rod 322. The lower connecting rod 322 is connected to a core rod 323, and through the core rod 323, a sliding connection is made between the upper connecting rod 321 and the lower connecting rod 322. A compression spring 324 is provided between the upper connecting rod 321 and the lower connecting rod 322. The compression spring 324 is mounted on the core rod 323. The upper connecting rod 321 is rotatably connected to the first lever 31. The lower connecting rod 322 is rotatably connected to the rotating member 71. In this embodiment, the lifting component 3 employs a lifting column. A vibration component 4 is placed at its lower part, and a hole is provided to absorb the vibration action of the vibration component 4. At its upper part, a compression spring is provided, which presses the vibration component downward and functions as a cushion to eliminate gaps between the parts. On its outside, a guide cylinder is provided for raising and lowering the lifting column.

[0028] In implementation, it is preferable to lengthen the pivot connection shaft 74 of the second connecting rod (lower connecting rod 322) of the pivot member 71. The connecting member 5 can directly utilize the end of the pivot connection shaft 74.

[0029] The rotating member 71 is provided with a limit fitting member 73 that restricts the stroke of rotation of the rotating member in the second direction. The second direction is opposite to the first direction, and in this embodiment, the rotating member 71 rotates counterclockwise with respect to the second direction in order to make it the rotation direction in which the movable welding work member descends. The limit fitting member 73 fits into a fixed limit structure 201 to restrict the rotation stroke in the second direction. Depending on the fitting position of the limit structure 201 and the limit fitting member 73 at other positions, a limit fitting of the rotating member 71 in the first direction can be configured. The fixed limit structure 201 can be fixed to a structure on the base or on the base 200. This limit fitting ensures smooth operation, so that during welding the connecting member 5 stops in an appropriate position, and when welding is finished the drive member 6 smoothly drives the connecting member 5, allowing the rotating member 71 to rotate smoothly in the first direction.

[0030] The handle 100 and the reset drive member 6 are connected through a rotating connection structure. The rotation axis of the reset drive member 6 is perpendicular to the rotation axis of the handle 100, and the rotation axis of the rotating member 71 is parallel to it and matches the height of the rotating member 71 located below the handle. When the reset drive member 6 rotates and lifts, there is no interference with the handle 100 which rotates and lowers, resulting in a higher overall space utilization rate for the machine. At the same time, the handle 100 is perpendicular to the connecting rod structure and located below the first lever 31, making the structure more compact.

[0031] In this embodiment, the pivot connection structure includes a first pivot arm 61 and a second pivot arm 62. The reset drive member 6 is fixed to the second pivot arm 62. The upper end of the first pivot arm 61 and the handle 100 are rotatably connected via a shaft 63, which is located below the handle. The shaft 63 is parallel to the handle's rotation axis 101. The first end and lower end of the second pivot arm are rotatably connected by a liftable first shaft 64, which is perpendicular to the rotation axis of the handle 100. The second end of the second pivot arm 62 is rotatably connected to the base 200 by a second shaft. In this embodiment, the second shaft and the shaft 712 of the pivot member 71 are coaxial. The pivot member 71 is rotatably connected to the shaft 712. The second pivot arm 62 is movably sleeve-connected on the shaft 712.

[0032] The handle has a groove 102 formed therein for housing the upper end of the first swing arm 61 and for fixing the shaft 63.

[0033] The welding apparatus is further equipped with a second sensor 8. The position of the second sensor 8 corresponds to the position just after the limit fitting member 73 has separated from the limit structure 201 when it moves in the first direction from the position in which it was engaged with the limit structure 201. The second sensor 8 also detects that the handle 100 has been firmly lowered (controlling the tension mechanism motor 300, which starts operating when the start button is pressed) and forms coordinated control for the motor 1. In other words, this combination allows the second signal to be obtained when the limit fitting member 73 separates from the limit structure 201 using the sensor (second sensor 8), which means that the rotating member 71 has already started reset rotation normally. The coordinated control uses the first sensor 103 to obtain a signal that the handle 100 is starting to be lifted, and obtains a first signal that the belt needs to be removed after welding is finished. As a result, when the first signal is obtained, the motor 1 is reversed by a small angle. When the second signal is obtained, the rotation of the motor 1 is stopped. Therefore, the gear connections can mesh more securely, the operation of the handle 100 to lift and reset the welding workpiece 21 becomes smoother, and the extra power consumption of the motor 1 is hardly increased.

[0034] The second sensor 8 can directly correspond to the limit fitting member 73 and detect its position, and can also correspond to other movable members that are linked to the movement of the limit fitting member 73. The first sensor 103 can directly correspond to the handle 100 and sense its position, and can also directly correspond to other movable members that are associated with the movement of the handle 100.

[0035] In this embodiment, the power source for the vibration component 4 is the motor 1. The power input shaft 41 and the output shaft of the motor 1 are connected by a belt drive mechanism 40. The drive wheels of the belt drive mechanism 40 are larger than the driven wheels and play a role in increasing the vibration frequency of the vibration component. The vibration component 4 employs an eccentric shaft arrangement.

[0036] Unless otherwise specified, terms indicating directional or positional relationships in this invention, such as "up," "down," "vertical," "horizontal," "top," "bottom," "inside," "outside," and "axial," refer to the directional or positional relationships shown in the drawings and are merely for the purpose of a simplified explanation of the invention. They do not explicitly or implicitly suggest that the device or element must necessarily have a specific direction, specific directional structure, or operation. Therefore, the terms indicating directional or positional relationships described in this invention are used for illustrative purposes only, and an ordinary engineer in the industry should be able to understand the specific meaning of these terms in conjunction with the drawings and in a specific context.

[0037] Unless otherwise explicitly stated or limited, "installation," "clamp installation," and "connection" in this invention should be understood in a broad sense. For example, they may be understood as a fixed connection, a disassemblable connection, an integrated connection, a direct connection, an indirect connection through an intermediate medium, or an internal connection between two elements. An ordinary engineer in the art will be able to understand the specific meaning of these terms in this invention depending on the specific situation.

[0038] The above are merely specific embodiments of the present invention, and the structural features of the present invention are not limited thereto. All variations or modifications made by articulators of the art within the scope of the present invention are all protected by the present invention.

Claims

1. Includes movable welding work members, motors, and components for pushing down and lifting the movable welding work members, The aforementioned push-down / lifting motion component is provided with a rotating member. The rotating member meshes with a gear that connects to the motor via transmission teeth, The motor drives the movable welding work member to move downwards by the push-down / lifting motion component. The welding apparatus has a reciprocating connecting member that can move up and down simultaneously with the movable welding work member, and the welding apparatus is provided with a reset drive member. The reset drive member is connected to the handle, The position where the connecting member is placed corresponds to the drive member, and when the movable welding work member is placed in the welding work position, The connecting member is positioned on the movement path of the reset drive member when the handle is lifted, and when the handle is lifted, it is actuated by the reset drive member to move in the first direction, and is actuated by the push-down / lifting motion component to reset the welding work member to its initial position. The portable packaging machine is equipped with a sensor, and when the welding operation is completed, the motor begins to reverse in response to the sensor signal, and the gears connected to the motor and the transmission teeth working on the rotating member are switched from a disengaged state to a meshed state. A welding device for a portable packaging machine with a handle, characterized by a tension mechanism.

2. The push-down / lifting motion component is equipped with a lifting component and a connecting rod mechanism. The lower end of the connecting rod mechanism is rotatably connected to the rotating member at a position away from the rotation center of the rotating member, and the upper end is movably connected to the lifting component. The movable welding work member is attached to the lower end of the lifting component. A welding device for a portable packaging machine with a handle, as described in claim 1.

3. A limit fitting member is provided on the rotating member, which has a stroke that allows the rotating member to rotate in a second direction. The second direction is opposite to the first direction and becomes the rotational direction that lowers the movable welding member. The limit fitting member engages with a fixed limit structure and limits the maximum angle by which the rotating member rotates in the second direction. A welding device for a portable packaging machine with a handle, as described in claim 1.

4. The handle and the reset drive member are connected by a rotating connection structure. The rotation axis of the reset drive member is perpendicular to the rotation axis of the handle and parallel to the rotation axis of the rotating member. A welding device for a portable packaging machine with a handle, as described in claim 1.

5. The aforementioned pivoting connection structure includes a first pivoting arm and a second pivoting arm. The reset drive member is fixed to the second swing arm, The first swing arm is rotatably connected to the handle and is located below the handle. The first end of the second swing arm and the first swing arm are rotatably connected by a liftable first shaft, and the first shaft is perpendicular to the rotation axis of the handle. The second end of the second swing arm is rotatably connected to the base by a second shaft. A welding device for a portable packaging machine with a handle, as described in feature 4.

6. The welding apparatus is further equipped with a second sensor. The position of the second sensor corresponds to the position of the limit structure immediately after the limit fitting member moves away from the fitting position of the limit structure in the first direction. The second sensor, together with the first sensor which detects the operation of the handle, forms coordinated control for the motor. A welding device for a portable packaging machine with a handle, as described in claim 3.

7. The connecting member is connected to the rotating member. A welding device for a portable packaging machine with a handle, as described in claim 3.

8. The power source for the vibration component of the welding apparatus originates from the motor, which is connected to the transmission mechanism. The welding apparatus is equipped with a separate vibration component drive motor. The second sensor detects the movement of the limit fitting member as it has just separated, corresponding to the position where the limit fitting member moves in the first direction from the fitting position of the limit structure. A welding device for a portable packaging machine with a handle, as described in claim 6.

9. The control of the aforementioned packaging machine is as follows: After one packing cycle is complete and the belt is removed, the handle is released, the tension mechanism is placed in the pulling position, the movable welding work member is placed in its initial position, and the reset drive member is placed in the position to detach from the connecting member. The packing process for a new cycle begins, the handle is lifted and the belt is loosened, and at this point the handle is lifted and the connecting member is placed at the end of the movement path of the reset drive member, After the packing belt is inserted, the handle is released, the tension mechanism is placed in the pulling position, the tension mechanism motor is activated and the belt pulling operation is performed, at which point the reset drive member moves further away from the connecting member. The belt pulling operation is completed, the welding machine's motor is started, the rotating member is activated and rotates in the second direction, the movable welding member is lowered to the welding position, the transmission teeth on the rotating member and the gear connected to the motor disengage, the connecting member moves together with the rotating member just in front of the reset drive member, and when the handle is lifted again, the rotating member is actuated by the reset drive member and moves in the first direction, the welding machine's motor continues to operate and welding is performed. After the welding work is finished, when the handle is lifted, the motor reverses in response to a sensor signal, stopping when the transmission teeth on the rotating member and the gears connected to the motor mesh. The rotating member is then driven by the drive member to rotate, the lifting component rises in a chain reaction, and the movable welding work member rises to its initial position. Simultaneously with the upward movement, the tension mechanism is lifted, and the packing belt is removed. The handle is loosened, the handle's rotation is released, the reset drive component is activated, and the connecting component is detached again, automatically entering the next packing cycle. including, A welding device for a portable packaging machine with a handle, as described in claim 3.

10. The welding apparatus is further provided with a second sensor. The position of the second sensor corresponds to the position of the limit structure immediately after the limit fitting member moves away from the fitting position of the limit structure in the first direction, and the second sensor, together with the first sensor which detects handle operation, forms coordinated control for the motor. The aforementioned coordinated control uses a second sensor to acquire a second signal indicating that the limit fitting member has left the limit structure, and at this time, it means that the rotating member has already begun reset rotation. The aforementioned coordinated control system acquires a first signal using a first sensor to indicate that the handle is beginning to lift, and a second signal indicating that the belt needs to be removed after welding is complete. When the first signal is received, the motor is reversed by a small angle, and when the second signal is received, the motor's rotation is stopped. A welding device for a portable packaging machine with a handle, as described in feature 9.

Images