Portable packing machine and reset mechanism

Abstract

The utility model provides a hand-held packer and a reset mechanism, the reset mechanism is an upper welding assembly reset mechanism and is provided with a reset transition connecting piece, the reset transition connecting piece is movably installed, and a clutch gear is provided with a stress structure matched with the transition connecting piece; an actuating structure which moves synchronously with a lifting handle of the tensioning wheel assembly is also arranged; the stress structure and the transition connecting piece are matched in a clutch mode, when the clutch gear is in a disengagement state, the position where the stress structure is located can enable the actuating structure to act on the transition connecting piece due to the fact that the handle is lifted upwards so that the transition connecting piece can act on the stress structure, the gear transmission mechanism can be meshed, and when the upper welding assembly is in the lifting position, the stress structure can act on the transition connecting piece. And the position of the connecting piece cannot be acted by the movement of the transition connecting piece. According to the utility model, the resetting can be realized without adopting a one-way transmission mechanism, the action of resetting the uplifting upper welding assembly can be combined into the action of lifting the tensioning wheel assembly, the uplifting and resetting of the resetting upper welding assembly can be naturally realized under the condition that the operation habit is not changed, and 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 reset 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 for transmission, 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 one-way transmission mechanism. 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 the upper welding assembly with the action of lifting the tension wheel assembly, and can achieve reset without using a one-way transmission mechanism. To this end, the utility model adopts the following technical solutions:

[0004] A reset mechanism is a reset mechanism for an upper welding assembly of a portable baler. The portable baler is provided with a welding mechanism, a tension wheel assembly and a lifting handle for the tension wheel assembly. 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 downward through a transmission mechanism. A clutch gear is provided in the transmission mechanism. After the upper welding assembly is pressed downward from an upper lifting position, the clutch gear is in a disengaged state. The upper welding assembly reset mechanism is provided with a reset transition connector. The transition connector It is movably installed, and the clutch gear is provided with a force-bearing structure cooperating with the transition connector. The reset mechanism is also provided with an actuating structure which moves synchronously with the lifting handle of the tensioning wheel assembly, and the actuating structure can move with the handle; the force-bearing structure and the transition connector are clutched and cooperated, and when the clutch gear is in a disengaged state, the position of the force-bearing structure can cause the lifting handle to cause the actuating structure to act on the transition connector, thereby causing the transition connector to act on the force-bearing structure, and the gear transmission mechanism is engaged, and when the upper welding assembly is in the lifted position, its position will not be affected by the movement of the transition connector.

[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 actuating structure is connected to the handle and rotates with the handle; the transition connecting piece is a rotatable piece and is provided with an elastic component so as to hover in an initial position. When the transition connecting piece is in the initial position, it can be acted upon by the actuating structure that rotates as the handle is lifted, and its acting end moves toward the force-bearing structure. The force-bearing structure of the clutch gear is located below the acting end.

[0007] The transition connector is rotatably connected to the base of the portable baler.

[0008] The transition connector comprises a lever, which is rotatably connected to the base of the portable baler through the lever, one end of which cooperates with the actuating structure, and the other end of which is provided with an adjustable acting member to cooperate with the force-bearing structure.

[0009] The action member is threadedly connected to the lever so that the length of the action member protruding from below the lever can be adjusted.

[0010] The handle is rotatably connected to the tensioning assembly bracket, and the tensioning assembly bracket and the tensioning wheel assembly are rotatably connected to the base of the portable baler. The actuating structure is located below the handle. The tensioning assembly bracket is provided with the handle self-rotation limiting structure. When the handle is lifted, the handle has a starting rotation angle relative to the tensioning assembly bracket, and the handle is provided with a reset elastic member that rotates downward.

[0011] 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.

[0012] 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. The force-bearing structure is located on the connecting rod mechanism, and constitutes an unlocking component of the connecting rod mechanism. When affected by the transition connecting piece, it moves from one side of the axial line of the connecting rod mechanism to the other side of the axial line to unlock the connecting rod mechanism.

[0013] A sensing part is arranged on the base of the portable baler, and a sensing mating part is arranged on the clutch gear or a part moving synchronously with the clutch gear. During welding, the sensing mating part and the sensing part are in a first mating state. After welding, the force-bearing structure is acted upon by the transition connecting part to change the position of the sensing mating part, and the sensing mating part and the sensing part 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.

[0014] According to the second aspect of the utility model, the utility model provides a portable baler, which adopts the following technical solution:

[0015] A portable baler is provided with a welding mechanism, a tensioning wheel assembly and a lifting handle of the tensioning wheel assembly. 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 downward 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 downward from the upper lifting position. The portable baler is characterized in that the upper welding assembly reset mechanism as described above is provided.

[0016] Due to the adoption of the technical solution of the utility model, the utility model does not need to adopt a one-way transmission mechanism to achieve resetting, but can combine the action of resetting the upper welding component into the action of lifting the tensioning wheel component. Without changing the operating habits, the lifting of the upper welding component can be naturally reset, and the structure is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural explosion diagram of an embodiment of the utility model.

[0018] Figure 2 This is a schematic diagram of an embodiment of the utility model from one direction.

[0019] Figure 3 This is a schematic diagram of an embodiment of the utility model viewed from another direction.

[0020] 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.

[0021] 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 lifted to release the belt.

[0022] 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.

[0023] 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 lifted to take out the belt and welding resetting begins. DETAILED DESCRIPTION

[0024] Refer to the accompanying drawings. The portable baler is provided with a welding mechanism, a tension wheel assembly and a lifting handle 101 of the tension wheel assembly. The welding mechanism is provided with a welding drive motor 1. The welding drive motor 1 drives the welding mechanism to be connected to an eccentric mechanism 16 through a synchronous belt 11. The eccentric mechanism 16 drives the upper welding assembly 102 in the welding mechanism to vibrate and cooperate with the lower welding assembly 103 to rub the strapping tape, so that the strapping tape head and the strapping tape tail are bonded. The welding drive motor 1 also drives the upper welding assembly 102 to be pressed down through a transmission mechanism. A clutch 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 upper lifting 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.

[0025] 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.

[0026] The upper welding assembly reset mechanism of the utility model is provided with a reset transition connector, and the transition connector is movably installed. The clutch gear 13 is provided with a force-bearing structure 131 that cooperates with the transition connector, and the reset mechanism is also provided with an actuating structure that moves synchronously with the lifting handle 101 of the tension wheel assembly, and the actuating structure can move with the handle 101; the force-bearing structure and the transition connector are clutched and matched, and when the clutch gear 13 is in a disengaged state, the position of the force-bearing structure can cause the lifting handle 101 to cause the actuating structure to act on the transition connector, so that the transition connector acts on the force-bearing structure, 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 the lifted position, its position will not be affected by the movement of the transition connector.

[0027] The actuating structure is connected to the handle 101 and rotates with the handle 101; the transition connector is a rotatable part and is provided with an elastic component such as a torsion spring 20 so as to hover in an initial position. When the transition connector is in the initial position, it can be acted upon by the actuating structure that rotates as the handle is lifted, and the acting end of the transition connector moves toward the force-bearing structure 131, which is located below the acting end.

[0028] The transition connector includes a lever 21, which is rotatably connected to the base of the portable baler through the lever 21. The reference numeral 23 is an axis connected to the base 300 of the portable baler; one end of the lever 21 cooperates with the actuating structure, and the other end is provided with an adjustable action member 22 to cooperate with the force-bearing structure. The action member can be implemented by a bolt, which is threadedly connected to the lever and can adjust the length of the action member protruding from the bottom of the lever 21, so as to facilitate the adjustment of the clutch, facilitate the manufacture of the whole machine, reduce the difficulty and provide more precise cooperation.

[0029] The handle 101 is rotatably connected to the tensioning assembly bracket 105. In the portable baler, the tensioning assembly bracket 105, the tensioning wheel assembly 104 and the tensioning power assembly 106 are rotatably connected to the base 300 of the portable baler. The reference numeral 301 is its connecting shaft. The tensioning assembly bracket 105, the tensioning wheel assembly 104 and the tensioning power assembly 106 are connected together through the central transmission assembly 107. When the handle 101 is lifted and lowered, they rotate synchronously with the connecting shaft 301 as the fulcrum. The actuating structure can be fixedly mounted on a structure fixed to the handle 101 below the handle 101 using a pin 3 parallel to the axial direction; the tensioning assembly bracket 105 is provided with the handle self-rotation limiting structure, so that when the handle is lifted, there will be a starting rotation angle relative to the tensioning assembly bracket, and then the tensioning assembly bracket 105, the tensioning wheel assembly 104 and the tensioning power assembly 106 are lifted together. At the start of the lifting angle, the force-bearing structure can be acted on by the transition connector before the tension wheel assembly is lifted, and can also have the following unlocking function. The handle 101 can be equipped with a downwardly rotating resetting elastic member, such as a torsion spring sleeved on the rotating shaft. The limiting structure can be a limiting portion 1051 on the tensioning assembly bracket 105 and a limiting matching portion 1011 on the handle.

[0030] 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 transition connector 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.

[0031] The welding mechanism includes a pressing and lifting motion assembly of the upper welding assembly 102, and the pressing and lifting motion 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. The force-bearing structure 131 is located on the connecting rod mechanism 108, and constitutes an unlocking component of the connecting rod mechanism 108. When the transition connecting member (the action member 22 in this embodiment) is acted upon, 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 to the other side of the axis connecting line to unlock the connecting rod mechanism. The implementation method of the connecting rod mechanism is as follows:

[0032] One end of the connecting rod mechanism 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 is rotatably connected to the first connecting rod 14 adjacent to it in the connecting rod mechanism 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 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 6a 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.

[0033] 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.

[0034] 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.

[0035] 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, which 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 lifting handle for the tension wheel assembly, 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 downward through a transmission mechanism, wherein a clutch gear is provided in the transmission mechanism, wherein the clutch gear is in a disengaged state after the upper welding assembly is pressed downward from the lifting position; ... The reset mechanism of the upper welding assembly is provided with a reset transition connector, and the transition connector is movably installed. The clutch gear is provided with a force-bearing structure cooperating with the transition connector. The reset mechanism is also provided with an actuating structure which moves synchronously with the lifting handle of the tensioning wheel assembly, and the actuating structure can move with the handle; the force-bearing structure and the transition connector are clutched and cooperated, and when the clutch gear is in a disengaged state, the position of the force-bearing structure can cause the lifting handle to cause the actuating structure to act on the transition connector, thereby causing the transition connector to act on the force-bearing structure, and the gear transmission mechanism is engaged, and when the upper welding assembly is in the lifted position, its position will not be affected by the movement of the transition connector.

2. A reset mechanism according to claim 1, characterized in that The actuating structure is connected to the handle and rotates with the handle; the transition connecting piece is a rotatable piece and is provided with an elastic component so as to hover in an initial position. When the transition connecting piece is in the initial position, it can be acted upon by the actuating structure that rotates as the handle is lifted, and its acting end moves toward the force-bearing structure. The force-bearing structure of the clutch gear is located below the acting end.

3. A reset mechanism according to claim 1 or 2, characterized in that The transition connector is rotatably connected to the base of the portable baler.

4. A reset mechanism as claimed in claim 3, characterized in that The transition connector comprises a lever, which is rotatably connected to the base of the portable baler through the lever, one end of which cooperates with the actuating structure, and the other end of which is provided with an adjustable acting member to cooperate with the force-bearing structure.

5. A reset mechanism as claimed in claim 4, characterized in that The action member is threadedly connected to the lever so that the length of the action member protruding from below the lever can be adjusted.

6. A reset mechanism according to claim 1 or 2, characterized in that The handle is rotatably connected to the tensioning assembly bracket, and the tensioning assembly bracket and the tensioning wheel assembly are rotatably connected to the base of the portable baler. The actuating structure is located below the handle. The tensioning assembly bracket is provided with the handle self-rotation limiting structure. When the handle is lifted, the handle has a starting rotation angle relative to the tensioning assembly bracket, and the handle is provided with a reset elastic member that rotates downward.

7. A reset mechanism according to claim 1 or 2, 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.

8. A reset mechanism according to claim 1 or 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. The force-bearing structure is located on the connecting rod mechanism, and constitutes an unlocking component of the connecting rod mechanism. When affected by the transition connecting piece, it moves from one side of the axial line of the connecting rod mechanism to the other side of the axial line to unlock the connecting rod mechanism.

9. A reset mechanism according to claim 1 or 2, characterized in that A sensing part is arranged on the base of the portable baler, and a sensing mating part is arranged on the clutch gear or a part moving synchronously with the clutch gear. During welding, the sensing mating part and the sensing part are in a first mating state. After welding, the force-bearing structure is acted upon by the transition connecting part to change the position of the sensing mating part, and the sensing mating part and the sensing part 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.

10. A portable baler, provided with a welding mechanism, a tension wheel assembly and a lifting handle of the tension wheel assembly, 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 downward 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 downward from the lifting position; characterized in that The portable baler is provided with the upper welding assembly resetting mechanism as claimed in claim 1 or 2.

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