Reset mechanism and portable packing machine

Abstract

The utility model provides a reset mechanism and a portable packer, a tensioning operation handle is provided with a pressing part, and a clutch gear is provided with a stress structure matched with the pressing part; the stress structure and the downward pressing component are in clutch fit, when the clutch gear is in a disengaged state, the position where the stress structure is located can enable the downward pressing component to act on the stress structure due to downward pressing of the tensioning operation handle, the gear transmission mechanism is meshed, and when the upper welding assembly is in an upward lifting position, the tensioning operation handle is pulled out to enable the downward pressing component to act on the stress structure. And the position of the pressing part is not affected by the movement of the pressing part along with the tensioning operation handle. According to the utility model, for the hand-held packaging machine which adopts a pressing handle to lift up the tensioning wheel assembly, the resetting can be realized without adopting an independent transmission mechanism, the action of resetting and lifting up the upper welding assembly can be combined into the action of lifting up the tensioning wheel assembly, and the reset upper welding assembly is naturally lifted up and reset under the condition that the operation habit is not changed, so that the safety of the hand-held packaging machine is ensured. The structure is simple and reliable.

Description

Technical Field

[0001] The utility model relates to a portable baler, in particular to an upper welding component resetting mechanism thereof. Background Art

[0002] A portable baler is a portable strapping device that is conveniently carried to relevant work sites to strap items. The portable baler includes a tensioning mechanism and a welding mechanism. After the strap is tightened, the upper welding component in the welding mechanism is pressed down to press the joint of the strapping tape onto the lower welding component for welding. In the prior art, if a welding motor is used as a pressing motor at the same time, a gear transmission mechanism will be provided therein, and during welding, the gear transmission mechanism will be disengaged. When the welding is completed, the motor reverses and drives the fan gear of the gear transmission mechanism to rotate through another set of separate transmission mechanisms. The gear transmission mechanism re-engages, and the upper welding mechanism is lifted up and reset under the drive of the motor reverse rotation. Although this structure can achieve motor-driven reset, the transmission structure is relatively complicated. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a reset mechanism, which can combine the action of resetting and lifting the upper welding component into the action of lifting the tension wheel component for a portable baler that uses a downward pressing handle to lift the tension wheel component, and can achieve reset without using a separate transmission mechanism. To this end, the utility model adopts the following technical solutions:

[0004] The reset mechanism is characterized in that the portable baler is provided with a welding mechanism, a tensioning wheel assembly and a tensioning operating handle, the welding mechanism is provided with a welding drive motor, and the welding drive motor also drives the upper welding assembly in the welding mechanism to press down and lift up through a transmission mechanism, and a disengageable gear transmission mechanism is provided in the transmission mechanism, and a clutch gear is provided in the gear transmission mechanism, and the clutch gear is in a disengaged state after the upper welding assembly is pressed down from the upper lifting position; it is characterized in that a pressing component is provided in the tensioning operating handle, and the clutch gear is provided with a force-bearing structure cooperating with the pressing component; the force-bearing structure and the pressing component are clutched and cooperated, and when the clutch gear is in a disengaged state, the position of the force-bearing structure can cause the pressing component to act on the force-bearing structure due to pressing down the tensioning operating handle, and the gear transmission mechanism is meshed, and when the upper welding assembly is in the upper lifting position, its position will not be affected by the pressing component when the tensioning operating handle moves.

[0005] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions or use these further technical solutions in combination:

[0006] The tensioning operating handle is provided with an elastic component or a transmission mechanism so that it can stop at the initial position, and the tensioning wheel assembly is lifted by pressing the tensioning operating handle downward from the initial position; when the upper welding assembly is in the lifted position, the position of the force-bearing structure is spaced below the pressing component on the tensioning operating handle in the initial position.

[0007] The force-bearing structure and the gear portion of the clutch gear are located on both sides of the gear shaft to form a lever.

[0008] The welding mechanism includes a pressing and lifting movement component of the upper welding component, and the pressing and lifting movement component includes a connecting rod mechanism that can be locked after the welding component is pressed down. The clutch gear serves as the other end of the connecting rod mechanism, and the force-bearing structure is located on the connecting rod mechanism; the interval matches the pressing stroke of the tensioning operating handle from the initial position, so that the force-bearing structure constitutes an unlocking component of the connecting rod mechanism. When it is acted upon by the pressing component, the axis of the rotational connection between the clutch gear and the connecting rod mechanism moves from one side of the axis connecting line of the connecting rod mechanism and the clutch gear to the other side of the axis connecting line to unlock the connecting rod mechanism and enable the clutch gear to enter the meshing position.

[0009] A sensing component is arranged on the base of the portable baler, and a sensing mating component is arranged on the clutch gear or a component moving synchronously with the clutch gear. During welding, the sensing mating component and the sensing component are in a first mating state. After welding, the force-bearing structure is acted upon by the downward pressing component to change the position of the sensing mating component, and the sensing mating component and the sensing component are in a second mating state, so that after welding, when the clutch gear moves close to the gear meshing with it, the welding drive motor can be controlled to start in reverse.

[0010] The tightening operating handle extends over the force-bearing structure, and the distance from the end of the tightening operating handle to the rotation axis of the tightening operating handle is greater than the distance from the pressing component to the rotation axis.

[0011] According to the second aspect of the utility model, the utility model provides a portable baler, which adopts the following technical solution:

[0012] A portable baler is provided with a welding mechanism, a tensioning wheel assembly and a tensioning operating handle. The welding mechanism is provided with a welding drive motor. The welding drive motor also drives the upper welding assembly in the welding mechanism to be pressed down and lifted up through a transmission mechanism. A disengageable gear transmission mechanism is provided in the transmission mechanism. A clutch gear is provided in the clutch gear transmission mechanism. The clutch gear is in a disengaged state after the upper welding assembly is pressed down from an upper lifting position. The portable baler is characterized in that the above-mentioned upper welding assembly reset mechanism is provided in the portable baler.

[0013] Due to the adoption of the technical solution of the utility model, for a portable baler that adopts a downward pressing handle to lift the tensioning wheel assembly, the utility model does not need to adopt a separate transmission mechanism to achieve resetting, but can combine the action of resetting the upper welding assembly into the action of lifting the tensioning wheel assembly. Without changing the operating habits, the lifting of the upper welding assembly can be naturally reset, and the structure is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural explosion diagram of an embodiment of the utility model.

[0015] Figure 2 This is a schematic diagram of an embodiment of the utility model from one direction.

[0016] Figure 3 This is a schematic diagram of an embodiment of the utility model viewed from another direction.

[0017] Figure 4a and Figure 4b They are respectively a side view and a front view of an embodiment of the utility model in an initial state.

[0018] Figure 5a and Figure 5b They are respectively a side view and a front view of an embodiment of the utility model when the handle is pressed down to release the belt.

[0019] Figure 6a and Figure 6b They are respectively a side view and a front view of an embodiment of the utility model when the upper welding assembly is pressed down for welding.

[0020] Figure 7a and Figure 7b They are respectively a side view and a front view of an embodiment of the utility model when the handle is pressed down to take out the belt and welding resetting begins. DETAILED DESCRIPTION

[0021] Referring to the accompanying drawings, the portable baler is provided with a welding mechanism, a tension wheel assembly 104 and a tensioning operating handle 101, wherein the welding mechanism is provided with a welding drive motor 1, wherein the welding drive motor 1 drives the welding mechanism to be connected to a vibration mechanism 16 via a synchronous belt 11, and the vibration mechanism 16 drives the upper welding assembly 102 in the welding mechanism to vibrate back and forth and cooperate with the lower welding assembly 103 to rub the strapping tape, thereby bonding the strapping tape head and the strapping tape tail. The welding drive motor 1 also drives the upper welding assembly 102 to be pressed down and lifted up through a transmission mechanism. A clutchable gear transmission mechanism is provided in the transmission mechanism. The gear transmission mechanism includes a gear 12 connected to the welding drive motor 1 and a clutch gear 13. Under normal conditions, the clutch gear 13 is in a meshing state with the gear 12. When the welding drive motor 1 is started to rotate in a first direction, the upper welding assembly 102 is pressed down through the transmission mechanism. After the upper welding assembly 102 is pressed down from the lifted position, that is, after cooperating with the lower welding assembly 103 to press the head and tail of the strapping tape, the clutch gear 13 is in a disengaged state with the gear 12 (see Figure 6a The rotation of the welding drive motor 1 in the first direction also drives the upper welding assembly 102 to vibrate, and cooperates with the lower welding assembly 103 to rub the strapping tape, thereby bonding the head and tail of the strapping tape.

[0022] The upper welding assembly reset mechanism in the utility model is used to rotate the clutch gear 13 back to mesh with the gear 12 after welding is completed. When the welding drive motor 1 is reversed (opposite to the first direction), the upper welding assembly 102 can be lifted and reset through the transmission mechanism.

[0023] In the upper welding assembly reset mechanism of the utility model, the tensioning operating handle 101 is provided with a pressing component 21, and the pressing component can be a separate part installed on the tensioning operating handle 101 or a structure integrated with the tensioning operating handle 101, and the clutch gear 13 is provided with a force-bearing structure 131 cooperating with the pressing component; the force-bearing structure 131 and the pressing component 21 are clutched and cooperated, and when the clutch gear 13 is in a disengaged state, the position of the force-bearing structure 131 can cause the pressing component to act on the force-bearing structure 131 due to pressing down the tensioning operating handle 101, and the clutch gear 13 is in a meshing state with the gear 12 after rotating a small angle, and when the upper welding assembly 102 is in an upward position, its position will not be affected by the pressing component when the tensioning operating handle 101 moves.

[0024] The pressing component is connected to the handle 101 and rotates with the handle 101. The tensioning operation handle 101 stops at the initial position (for example, the tensioning transmission assembly 106 in this embodiment) through the transmission mechanism, and the tensioning wheel assembly is lifted by pressing the tensioning operation handle 101 from the initial position; when the upper welding assembly 102 is in the lifted position, the position of the force-bearing structure 131 is spaced from the bottom of the pressing component on the tensioning operation handle 101 in the initial position.

[0025] The force-bearing structure 131 and the gear portion of the clutch gear 13 are located on both sides of the gear shaft to form a lever.

[0026] In the portable baler of the utility model, the handle 101 is rotatably connected to the tensioning assembly bracket 105, and the tensioning assembly bracket 105 can be rotatably connected to the base 300 of the portable baler. The reference numeral 301 is its connecting shaft. The tensioning wheel assembly 104 is connected to the handle 101 and the tensioning transmission assembly 106. The tensioning transmission assembly 106 is driven to rotate in one direction by the handle 101 being lifted and rotated from the initial position and released to tighten the strapping belt; when the handle 101 is pressed down and reset, it rotates synchronously with the connecting shaft 301 as the fulcrum. The above structure is a structure of an existing portable baler.

[0027] The tensioning operating handle 101 extends over the force-bearing structure 131, and the distance from the end of the tensioning operating handle 101 to the rotation axis of the tensioning operating handle (the connecting shaft 301) is greater than the distance from the pressing component to the rotation axis, which can make the reset operation more sensitive and labor-saving.

[0028] The base 300 of the portable baler is provided with a sensing member 4, and the clutch gear 13 is provided with a sensing mating member 132. During the welding operation, the sensing mating member 132 and the sensing member 4 are in a first mating state (pressed on the sensing switch). After the welding operation is completed, the force-bearing structure 132 is acted upon by the pressing component 21 to change the position of the sensing mating member (lifted from the sensing switch), and the sensing mating member and the sensing member are in a second mating state, so that after the welding is completed, when the clutch gear moves close to the gear meshing with it, the welding drive motor can be controlled to start in reverse, thereby resetting the upper welding assembly.

[0029] The welding mechanism includes a pressing and lifting movement assembly of the upper welding assembly 102, and the pressing and lifting movement assembly includes a connecting rod mechanism 108 that can be locked after the welding assembly is pressed down. The connecting rod mechanism 108 is connected to the gear transmission mechanism, and the force-bearing structure 131 is located on the connecting rod mechanism 108, and the interval cooperates with the pressing stroke of the tensioning operating handle 101 from the initial position, so that the force-bearing structure 131 constitutes the unlocking component of the connecting rod mechanism 108. When the pressing component 21 is applied, the axis of the rotational connection between the clutch gear 13 and the connecting rod mechanism moves from one side of the axis connecting line of the connecting rod mechanism and the clutch gear 13 to the other side of the axis connecting line to unlock the connecting rod mechanism and enable the clutch gear to enter the meshing position. The implementation method of the connecting rod mechanism is as follows:

[0030] One end of the connecting rod mechanism 108 is rotatably connected to the upper welding assembly 102, and the clutch gear 13 serves as the other end of the connecting rod mechanism. The clutch gear 13 is rotatably connected to the first connecting rod 14 adjacent to it in the connecting rod mechanism 108 at a position deviating from the rotation center of the clutch gear 13. The first connecting rod 14 is composed of two sections of threaded rods and can adjust the length. The connecting rod mechanism is also provided with a second connecting rod 15. The second connecting rod 15 and the first connecting rod 14 are slidably connected and can be extended and retracted. A compression spring 17 is provided between the second connecting rod 15 and the first connecting rod 14. The second connecting rod 15 is rotatably connected to the upper welding assembly 102. The axis A1 (gear axis) of the clutch gear 13, the axis A2 of the rotation connection between the second connecting rod 15 and the upper welding assembly 102, and the axis A3 of the rotation connection between the first connecting rod 14 and the clutch gear 13 can form a triangular relationship, refer to Figure 4a and Figure 7a When the clutch gear 13 switches from disengagement to engagement, the axis A3 passes through the connecting line of the axes A1 and A2, and the compression spring 17 undergoes a process of storing and releasing energy, thereby locking and unlocking the upper welding assembly 102.

[0031] Unless otherwise specified, in the present invention, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial" and the like indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0032] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "clamped" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[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 any technician in the field of the present invention are included in the protection scope of the present invention.

Claims

1. A reset mechanism is a reset mechanism for an upper welding assembly of a portable baler, wherein the portable baler is provided with a welding mechanism, a tension wheel assembly and a tensioning operating handle, wherein the welding mechanism is provided with a welding drive motor, wherein the welding drive motor also drives the upper welding assembly in the welding mechanism to be pressed down and lifted up through a transmission mechanism, wherein a clutch gear transmission mechanism is provided in the transmission mechanism, wherein a clutch gear is provided in the gear transmission mechanism, and wherein the clutch gear is in a disengaged state after the upper welding assembly is pressed down from the lifted position; wherein the clutch gear is in a disengaged state; wherein the clutch gear is in a disengaged state after the upper welding assembly is pressed down from the lifted position; wherein the clutch gear is in a disengaged state The tensioning operating handle is provided with a pressing component, and the clutch gear is provided with a force-bearing structure cooperating with the pressing component; the force-bearing structure and the pressing component are clutched and cooperated, and when the clutch gear is in a disengaged state, the position of the force-bearing structure can cause the pressing component to act on the force-bearing structure due to pressing down the tensioning operating handle, and the gear transmission mechanism is engaged. When the upper welding assembly is in an upward position, its position will not be affected by the pressing component when the tensioning operating handle moves.

2. The reset mechanism according to claim 1, characterized in that The tensioning operating handle is provided with an elastic component or a transmission mechanism so that it can stop at the initial position, and the tensioning wheel assembly is lifted by pressing the tensioning operating handle downward from the initial position; when the upper welding assembly is in the lifted position, the position of the force-bearing structure is spaced below the pressing component on the tensioning operating handle in the initial position.

3. The reset mechanism according to claim 1, characterized in that The force-bearing structure and the gear portion of the clutch gear are located on both sides of the gear shaft to form a lever.

4. The reset mechanism according to claim 2, characterized in that The welding mechanism includes a pressing and lifting movement component of the upper welding component, and the pressing and lifting movement component includes a connecting rod mechanism that can be locked after the welding component is pressed down. The clutch gear serves as the other end of the connecting rod mechanism, and the force-bearing structure is located on the connecting rod mechanism; the interval matches the pressing stroke of the tensioning operating handle from the initial position, so that the force-bearing structure constitutes an unlocking component of the connecting rod mechanism. When it is acted upon by the pressing component, the axis of the rotational connection between the clutch gear and the connecting rod mechanism moves from one side of the axis connecting line of the connecting rod mechanism and the clutch gear to the other side of the axis connecting line to unlock the connecting rod mechanism and enable the clutch gear to enter the meshing position.

5. The reset mechanism according to claim 1, characterized in that A sensing component is arranged on the base of the portable baler, and a sensing mating component is arranged on the clutch gear or a component moving synchronously with the clutch gear. During welding, the sensing mating component and the sensing component are in a first mating state. After welding, the force-bearing structure is acted upon by the downward pressing component to change the position of the sensing mating component, and the sensing mating component and the sensing component are in a second mating state, so that after welding, when the clutch gear moves close to the gear meshing with it, the welding drive motor can be controlled to start in reverse.

6. A reset mechanism as claimed in claim 1, 2, 3, 4 or 5, characterized in that The tightening operating handle extends over the force-bearing structure, and the distance from the end of the tightening operating handle to the rotation axis of the tightening operating handle is greater than the distance from the pressing component to the rotation axis.

7. A portable baler, provided with a welding mechanism, a tension wheel assembly and a tensioning operating handle, the welding mechanism is provided with a welding drive motor, the welding drive motor also drives the upper welding assembly in the welding mechanism to press down and lift up through a transmission mechanism, the transmission mechanism is provided with a disengageable gear transmission mechanism, the clutch gear transmission mechanism is provided with a clutch gear, and the clutch gear is in a disengaged state after the upper welding assembly is pressed down from the lifting position; characterized in that The portable baler is provided with the upper welding assembly resetting mechanism described in claim 1, 2, 3, 4, 5 or 6.

Images