CN113511358A

CN113511358A - Welding device

Info

Publication number: CN113511358A
Application number: CN202010273335.6A
Authority: CN
Inventors: 何瑜华; 姜水波
Original assignee: Taizhou Yongpai Pack Equipment Co ltd
Current assignee: Zhejiang Weipai Packaging Equipment Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-10-19

Abstract

The invention provides a welding device which comprises an operating part, a welding working motor, a welding working movable assembly and a welding working fixing assembly, wherein the welding working motor is connected with the welding working movable assembly through a transmission mechanism; the welding device is provided with a rotatable middle connecting part, and the middle connecting part is provided with a first input part, a second input part and a locking structure connecting part. The automatic belt pressing and welding device can realize automatic belt pressing and welding work of the welding device through simple structural matching and through front-back connection and clutch change of different transmissions.

Description

Welding device

Technical Field

The invention relates to a welding device, in particular to a packing belt welding device of a portable packing machine.

Background

One way of adhering the strap is to use PET or PP strapping tape to bundle the product or package, for example in a hand-held power baler, and then to tighten and bond the strap by heat-melting the two parts of the strap to be bonded by means of friction heating. It is always desirable for a hand baler to be able to perform a series of actions by automatic operation of the machine with as few operations as possible, and the machine is preferably as simple in construction, as reasonably arranged and as light and aesthetically as possible.

Disclosure of Invention

The invention aims to provide a welding device which can be applied to a hand-held packaging machine and used for welding a packaging belt and has simple operation and structure. Therefore, the invention adopts the following technical scheme:

a welding device comprises an operation part, a welding work motor, a welding work movable assembly and a welding work fixing assembly, wherein the welding work motor is connected with the welding work movable assembly through a transmission mechanism; the welding device is characterized in that the welding device is provided with a rotatable middle connecting part, and the middle connecting part is provided with a first input part, a second input part and a locking structure connecting part;

the first input portion causes the intermediate connecting member to rotate in a first direction based on an operation of an operating member;

the second input position is connected with the clutch transmission of welding work motor, welding work motor can drive through output component the second input position produces the rotation of second direction to drive intermediate junction spare from this and rotate on the second direction, and both break away from after rotating certain angle, certain angle corresponds welding work movable assembly and moves to the angle in the required pivoted of welding work angle.

Further, the second input position is a sector gear, and the output part adopts a gear.

Furthermore, the welding device is provided with a welding working state locking structure of the welding working movable assembly, the locking structure is obliquely arranged, the upper end of the locking structure is rotatably connected with the connecting part of the locking structure, the rotating axis is parallel to the rotating axis of the middle connecting part, and the lower end of the locking structure is connected with the welding working movable assembly; the welding device is provided with a limiting structure so as to limit the maximum rotation angle of the middle connecting part rotating towards the second direction; the fusion apparatus is configured such that, while a fusion operation is being performed, the locking structure is in a locked state, and the second input portion and the output portion are in a disengaged state, the intermediate connecting member maintains a tendency to rotate in the second rotational direction so that the fusion operation movable assembly does not lift upward, and before the fusion operation is started, the fusion operation movable assembly is in a lifted state, the locking structure is in an unlocked state, and the second input portion and the output portion are in a connected state.

Furthermore, the welding working state locking structure comprises an upper component and a lower component, the upper component is rotatably connected with the connecting part of the locking structure, and the lower component is connected with the welding working movable component; a compression spring is arranged between the upper assembly and the lower assembly, one of the upper assembly and the lower assembly is provided with a length adjusting piece, and the other one of the upper assembly and the lower assembly is provided with an inserting connecting piece matched with the length adjusting piece; the welding device is provided with a limiting structure so as to limit the maximum rotation angle of the middle connecting part rotating towards the second direction; the locking structure, the welding work movable assembly, the intermediate connecting member are configured to: during the welding operation, the locking structure is in a locking state, the second input part and the output part are in a disengagement state, the intermediate connecting part keeps the trend of rotating towards the second rotating direction, and the rotating axis of the locking structure rotatably connected with the connecting part of the locking structure is positioned outside the first side of the plane; before the start of welding operation, the movable assembly of the welding operation is in a lifting state, the locking structure is in a non-locking state, the rotating axis of the locking structure in rotating connection with the connecting part of the locking structure is positioned outside the second side of the plane, and the second input part and the output part are in a connecting state; the plane is a plane passing through the rotation axis of the middle connecting part and the rotation axis of the welding work movable assembly and the locking structure which are rotationally connected.

Furthermore, the welding work movable assembly comprises a welding work piece and a welding work power input connecting piece, the welding work piece is hinged with the welding work power input connecting piece, the welding work power input connecting piece is connected with one end of the transmission mechanism through an eccentric structure, and the other end of the transmission mechanism is connected with the output end of the welding work motor; the welding workpiece is connected to the mounting frame in a sliding mode; the welding workpiece and the connecting piece hinge axis are parallel to the rotation axis of the mounting frame.

Furthermore, the welding working motor and the transmission mechanism are in a one-way transmission connection relationship, when the second input part of the middle connecting part and the output part are in a connection state and move in a first direction, the welding working motor and the transmission mechanism are in a separation driving connection relationship, and the welding working motor does not drive the transmission mechanism.

Further, the welding work movable assembly comprises a mounting frame upper ejection spring arranged between the mounting frame and the mounting seat.

The operating component is a rotatable operating handle assembly, and the rotating axis of the operating component is parallel to the rotating axis of the tensioning wheel of the welding device; the operating handle assembly comprises an operating handle, a pawl and a gear, the pawl and the gear are combined with the operating handle to synchronously rotate, the pawl and the gear prevent the tension wheel from reversely rotating when the operating handle works, a swing rod is arranged between the first input part and the operating handle assembly and matched with the first input part through the end part of the swing rod, and the swing rod is provided with the gear and is in meshed connection with the gear on the operating handle.

The first input portion is configured to be located at a position where the intermediate connecting member is located at a rotation limit in the second direction, and is capable of receiving an input external force when the operating member is operated, so that the intermediate connecting member generates a return rotation in the first direction.

By adopting the technical scheme of the invention, the automatic belt pressing and welding work of the welding device can be realized through simple structure matching and through front-back connection and clutch change of different transmissions.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the hand baler of the present invention.

Fig. 2 is an exploded view of the structure of an embodiment of the hand baler of the present invention.

Fig. 3 is a second schematic structural view of the portable baler according to the embodiment of the present invention.

Fig. 4 is a further exploded view of a portion of the structure of an embodiment of the hand baler of the present invention, based on fig. 2.

Fig. 5 is a schematic view of the welding operation motor ready to begin operation after the handles are raised in an embodiment of the baler of the present invention.

Fig. 6 is a schematic view of the welding operation in the embodiment of the hand-packing machine of the present invention.

Fig. 7 is an exploded view of the welding operation of the movable components of the hand baler of the present invention.

Detailed Description

Reference is made to the accompanying drawings. The welding device comprises a rotatable operating handle assembly, a welding working motor 200, a welding working movable assembly and a welding working fixing assembly, wherein the welding working motor is connected with the welding working movable assembly through a transmission mechanism; the fusion apparatus is provided with an intermediate connecting member 1 rotatably coupled to a fixed mount 100, and reference numeral 10 is a rotation shaft of the intermediate connecting member. The intermediate connecting component is provided with a first input part 11, a second input part 12 and a locking structure connecting part 13. The mount 100 is mounted on the base 300 of the hand baler.

The first input site 11 causes rotation of the intermediate connecting member 1 in a first direction, i.e. counter-clockwise in fig. 5, upon operation of the operating handle assembly.

The second input portion 12 is in clutch transmission connection with an output member 201 of the welding work motor 200 by using a sector gear, and the output member 201 is mounted on a motor output shaft 205 by using a gear. The welding operation motor 200 can drive the second input portion 12 to rotate in the second direction (i.e., clockwise direction in fig. 6) through the output part 201, and thus drive the whole intermediate connection member 1 to rotate in the second direction, and the intermediate connection member 1 and the intermediate connection member are disengaged after rotating to a certain angle, the certain angle corresponds to the angle at which the welding operation movable assembly moves to the welding operation angle (i.e., the angle from fig. 5 to fig. 6), and the clutch timing and the rotation angle are controlled by determining the sector angle of the gear due to the sector gear, so that the structure is simple, and the clutch operation is reliable and stable.

The welding device is provided with a welding working state locking structure of a welding working movable assembly, the locking structure is obliquely arranged, the upper end of the locking structure is hinged with a locking structure connecting part 13 through a shaft 21, the shaft 21 is parallel to the shaft 10, and the lower end of the locking structure is rotatably connected with the welding working movable assembly; the welding device is provided with a stop structure formed by a catch 101 on the frame of the baler cooperating with a stop 14 on the intermediate coupling member 1 to define the maximum angle of rotation of the intermediate coupling member 1 in the second direction at which the sector gear and the output member have disengaged when the welding operation is in progress. The locking structure and the fusion work push-down locking output connection part 13 are configured to make the intermediate connection part 1 have a tendency to rotate in the first rotation direction before the fusion work motor starts working, and make the intermediate connection part 1 keep a tendency to rotate in the second rotation direction and push against the gear 101 of the limit structure when the fusion work is performed.

The preferable structure of the above locking structure is that the locking structure is composed of an upper component and a lower component, the upper component is provided with a first connecting piece 24, the connecting piece 24 is hinged with the fusion welding work pressing and locking output connecting part 13 through a shaft 21, the lower component is provided with a second connecting piece 25, the second connecting piece 25 is rotatably connected with a fusion welding work movable component, a pressure spring 22 is arranged between the upper component and the lower component, the first connecting piece in the upper component is provided with a nut 26 and is in threaded connection with a length adjusting piece 23, and the length adjusting piece 23 is inserted into the second connecting piece 25. The locking structure, the welding work movable assembly, the intermediate connecting member 1 are configured to: during the welding operation (see fig. 6), the locking structure is in the locked state and the second input portion 12 and the output member 201 are in the disengaged state, the intermediate coupling member 1 maintains the tendency to rotate in the second direction of rotation, the axis of rotation of the locking structure in rotational connection with the locking structure connection portion 13 is outside the first side of the plane; before the start of the welding operation (see fig. 5), the movable assembly of the welding operation is in the raised state, the locking structure is in the unlocked state, the axis of rotation of the locking structure in rotational connection with the connection portion of the locking structure is outside the second side of the plane, and the second input portion 12 and the output member 201 are in the connected state; the plane is the plane of the rotation axis of the middle connecting part and the rotation axis of the welding work movable assembly and the locking structure which are connected in a rotating mode, and the first side and the second side are divided into the front side and the back side of the plane.

The movable assembly for fusion splicing work comprises a mounting frame 31, the mounting frame 31 is rotatably mounted on the mounting base 100 through a bearing 32, the mounting frame 31 is further connected with an intermediate connecting part through a fusion splicing work state locking structure, and specifically, the mounting frame 31 is rotatably connected with the second connecting part 25 through a pin shaft 27. Thus, the rotation of the intermediate connection member 1 in the second direction causes the fusion work movable assembly to rotate to the fusion work angle by the locking structure and to be locked without being rotated reversely.

The fusion work activity assembly includes a mounting bracket top spring 37 disposed between the mounting bracket 31 and the mounting seat 100.

The axis of rotation of the operating handle assembly is parallel to the axis of rotation of the tightening wheel 500 of the welding apparatus; the operating handle assembly comprises an operating handle 6, reference numeral 60 is a rotating shaft of the handle, the operating handle 6 is connected with a pawl 61 and a gear 62 which rotate synchronously and prevent the tension wheel from rotating reversely when in work, a swing rod 7 is arranged between the first input part 11 and the operating handle assembly, a fixed connecting part 71 (such as a bolt in threaded connection with the end part of the swing rod) on the end part of the swing rod 7 is matched with the first input part 11, the swing rod 7 is provided with a gear 72, the gear 72 is installed on a base 300, the gear 72 is in meshed connection with the gear 62 on the operating handle 6, and when the operating handle rotates, the swing rod 7 is driven to move through the gear connecting structure.

The welding work movable assembly comprises a welding work piece 33 and a welding work power input connecting piece 34, the welding work piece 33 is hinged with the connecting piece 34, the welding work power input connecting piece 34 is connected with one end of a transmission mechanism 202 through an eccentric shaft 35, the transmission mechanism 202 can be a belt transmission mechanism, the eccentric shaft 35 is connected with a driven wheel 203 of the transmission mechanism, and a driving wheel 204 of the transmission mechanism is connected with an output shaft 205 of a welding work motor; the welding workpiece 33 is connected with the guide rail 36 on the mounting frame 31 in a sliding way, clamping balls can be arranged in the arc groove between the side surfaces of the welding workpiece 33 and the guide rail 36 in a sliding way; the axis of articulation of the welding work 33 and the welding work power input connection 34 is parallel to the axis of rotation of the mounting bracket 31 and also parallel to the eccentric shaft 35.

The welding operation motor 200 and the transmission mechanism 202 are in a one-way transmission connection relationship, and when the second input portion 12 of the intermediate connection member 1 and the output member 201 are in a connection state (in this embodiment, in a gear engagement state) and rotate in a first direction, the welding operation motor 200 and the transmission mechanism 202 are in a separation driving connection relationship, and the welding operation motor 200 does not drive the transmission mechanism 202. This may be achieved by a unidirectional bearing connection in the respective direction between the drive pulley 204 and the output shaft 205 of the welding-work motor.

The subassembly is fixed in butt fusion work for the fixed structure of portable baling press bottom, and the upper surface sets up fixed friction structure 4, butt fusion work piece 33 and the cooperation of fixed friction structure 4 make the joint of packing area generate heat the butt fusion through the friction.

In operation, when the handle 6 is lifted up after the previous strapping band joint is welded, the handle assembly is rotated, the pawl 61 automatically releases the unidirectional locking of the tension device of the hand baler by rotating, at the same time, the gear 62 drives the gear 72 on the swing link 7 to rotate, the swing link 7 is pressed down, and the connecting part 71 at the end of the swing link also acts downwards on the first input portion 11. It can be seen from the figure that the rocker 7 is also oblique to the respective axis of rotation in a planar vertical projection, so that the rocker performs a steering function. Therefore, the operation part adopts the structure, the combination of the related rotation relation and the direction can automatically associate the tensioning structure and the welding structure, the work is more reliable, the operation is convenient, the structural arrangement is more uniform and reasonable, and the human engineering is met.

When the first input portion 11 is acted upon, the entire intermediate coupling member 1 is rotated in the first direction (counterclockwise in fig. 5), and the second input portion 12 is thereby rotated to the position shown in fig. 5, but since the welding work motor 200 and the transmission mechanism 202 are in a one-way transmission connection relationship, the output member 201 is engaged with the second input portion 12 at this time, but the transmission mechanism is not rotated in the reverse direction. When the locking mechanism connecting portion 13 is rotated in the first direction, the rotation axis between the inclined locking mechanism and the locking mechanism connecting portion 13 is also rotated to the outside of the second side of the plane, thereby releasing the locking, and the mounting bracket 31 can be rotated and lifted up to be in the state of fig. 5. The well-bonded packing belt can be removed, and meanwhile, the packing belt which needs to be packed and welded is placed into the bag.

After the strapping band is tensioned, the welding operation motor 200 is signaled to start operation, so that the output part 201 is driven to rotate by the motor, the second input part 12 is driven to rotate in the second direction, and thus the whole intermediate connecting part 1 is rotated in the second direction, the rotation axis between the inclined locking structure and the locking structure connecting part 13 also rotates to the outside of the first side of the plane to realize locking, in this state, the pressure spring 22 enables the intermediate connecting part 1 to keep the trend of rotating in the second rotation direction, so that the stopper 14 is pressed against the gear 101 of the limiting structure, and the mounting frame is pressed down to the welding operation angle under the action of the pressure spring 22, thereby realizing locking.

At the same time, the welding operation motor 200 drives the welding workpiece 33 to move back and forth under the guidance of the guide rail 36 via the transmission mechanism 202, the eccentric shaft 35, and the welding operation power input connector 34, thereby performing the welding operation.

At this time, since the sector gear has been disengaged from the output member 201 (see fig. 6) and is held by the locking structure, the intermediate coupling member 1 is maintained in the normal operating state without being interfered.

After the melting is finished, the handle is lifted again, and the process is repeated.

The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.

Claims

1. A welding device comprises an operation part, a welding work motor, a welding work movable assembly and a welding work fixing assembly, wherein the welding work motor is connected with the welding work movable assembly through a transmission mechanism; the welding device is characterized in that the welding device is provided with a rotatable middle connecting part, and the middle connecting part is provided with a first input part, a second input part and a locking structure connecting part;

2. A fusion splicing apparatus according to claim 1, wherein said second input portion is a sector gear and said output member is a gear.

3. The fusion apparatus of claim 1, wherein the fusion apparatus is provided with a fusion work state locking structure of the fusion work movable assembly, the locking structure being disposed obliquely with an upper end thereof rotatably connected to a connecting portion of the locking structure, a rotation axis being parallel to a rotation axis of the intermediate connecting member, and a lower end thereof connected to the fusion work movable assembly; the welding device is provided with a limiting structure so as to limit the maximum rotation angle of the middle connecting part rotating towards the second direction; the fusion apparatus is configured such that, while a fusion operation is being performed, the locking structure is in a locked state, and the second input portion and the output portion are in a disengaged state, the intermediate connecting member maintains a tendency to rotate in the second rotational direction so that the fusion operation movable assembly does not lift upward, and before the fusion operation is started, the fusion operation movable assembly is in a lifted state, the locking structure is in an unlocked state, and the second input portion and the output portion are in a connected state.

4. The fusion apparatus of claim 1, wherein the fusion service locking mechanism comprises an upper assembly and a lower assembly, the upper assembly being pivotally connected to the locking mechanism at a connection point, the lower assembly being connected to the fusion service movable assembly; a compression spring is arranged between the upper assembly and the lower assembly, one of the upper assembly and the lower assembly is provided with a length adjusting piece, and the other one of the upper assembly and the lower assembly is provided with an inserting connecting piece matched with the length adjusting piece; the welding device is provided with a limiting structure so as to limit the maximum rotation angle of the middle connecting part rotating towards the second direction;

the locking structure, the welding work movable assembly, the intermediate connecting member are configured to: during the welding operation, the locking structure is in a locking state, the second input part and the output part are in a disengagement state, the intermediate connecting part keeps the trend of rotating towards the second rotating direction, and the rotating axis of the locking structure rotatably connected with the connecting part of the locking structure is positioned outside the first side of the plane; before the start of welding operation, the movable assembly of the welding operation is in a lifting state, the locking structure is in a non-locking state, the rotating axis of the locking structure in rotating connection with the connecting part of the locking structure is positioned outside the second side of the plane, and the second input part and the output part are in a connecting state; the plane is a plane passing through the rotation axis of the middle connecting part and the rotation axis of the welding work movable assembly and the locking structure which are rotationally connected.

5. A fusion apparatus according to claim 1, wherein the fusion work activity assembly comprises a mounting bracket rotatably mounted on the mounting base, the mounting bracket further being connected to the intermediate connecting member by a fusion work state locking arrangement, rotation of the intermediate connecting member in the second direction causing the fusion work activity assembly to rotate to a fusion work angle and to be locked against reverse rotation by the locking arrangement.

6. The fusion apparatus of claim 1, wherein the fusion work movable assembly includes a fusion work member and a fusion work power input connector, the fusion work member being hingedly connected to the fusion work power input connector, the fusion work power input connector being connected to one end of the transmission mechanism through the eccentric mechanism, the other end of the transmission mechanism being connected to an output of the fusion work motor; the welding workpiece is connected to the guide rail on the mounting frame in a sliding manner; the hinge axes of the welding workpiece and the welding work power input connecting piece are parallel to the rotation axis of the mounting frame.

7. The fusion apparatus of claim 1, wherein the motor and the actuator are in a unidirectional drive connection, and wherein the motor and the actuator are out of drive connection when the second input of the intermediate connector is connected to the output member and moves in the first direction, the motor and the actuator not driving the actuator.

8. A fusion apparatus according to claim 1, wherein the fusion work subassembly comprises a spring-loaded mount disposed between the mount and the mount.

9. A fusion apparatus according to claim 1, wherein the operating member is a rotatable operating handle assembly having an axis of rotation parallel to an axis of rotation of a tension wheel of the fusion apparatus; the operating handle assembly comprises an operating handle, a pawl and a gear, the pawl and the gear are combined with the operating handle to synchronously rotate, the pawl and the gear prevent the tension wheel from reversely rotating when the operating handle works, a swing rod is arranged between the first input part and the operating handle assembly and matched with the first input part through the end part of the swing rod, and the swing rod is provided with the gear and is in meshed connection with the gear on the operating handle.

10. A fusion splicing apparatus according to claim 1, wherein said first input portion is configured to be positioned at a rotation limit of said intermediate coupling member in the second direction so as to receive an input of an external force when said operating member is operated, so that said intermediate coupling member is rotated in a return rotation in the first direction.