CN215437161U - Feeding device of simple film packaging machine - Google Patents

Abstract

The utility model relates to a feeding device of a simple film packaging machine, which comprises: a frame; a material guide channel; the thin cover erecting device is used for erecting the thin covers which are conveyed from the previous process and are in a flat state and transferring the thin covers to the material guide channel; the transverse pushing mechanism is used for pushing the thin covers which are erected and stacked together to the second position from the first position along the first direction of the rack; the thin cover raising apparatus includes: the magnetic wheel assembly comprises a magnetic wheel arranged at the port position of the material guide channel, and the magnetic wheel can attract the thin cover conveyed in the previous process and transfer the thin cover to the material guide channel after the thin cover is erected along with the rotation of the magnetic wheel; the thin cover holding assembly is arranged adjacent to the magnetic wheel, comprises a magnetic attraction piece arranged at the bottom of the port position of the material guide channel and is used for keeping the thin cover transferred into the material guide channel through the magnetic wheel in a vertical stacking state under the action of the magnetic attraction piece. The thin cover can be effectively kept in a standing state in the feeding process without the forward tilting problem.

Description

Feeding device of simple film packaging machine

Technical Field

The utility model relates to the technical field of film packaging equipment, in particular to a feeding device of a simple film packaging machine.

Background

Thin lids (referred to as "thin lids") require stacking and packaging with a sanitary film before transportation to form a roll of lids, thereby reducing contamination of the lids during transportation. In the prior art, a stack of pop can covers are usually packaged by manually utilizing sanitary films, so that more pollution is caused by artificial uncontrollable contact on a packaging line of the pop can covers, the pollution risk of the pop can covers is increased, in addition, a large amount of operators are required for the whole production and packaging line, the automation degree is low, the production efficiency is caused, and the cost is high.

To this end, the chinese patent application No. CN201510276308.3 (No. CN104859885B) discloses an automatic film packaging machine, which includes: a frame as a main body of the packing machine for supporting the following respective components; the counting and conveying assembly is arranged at the end part of the rack and used for counting a certain number of pop can covers, stacking the counted pop can covers into a stack, and conveying the stacked pop can covers to a designated position; the packaging assembly is arranged in the middle of the rack and used for packaging the stacked zip-top can covers to form a zip-top can cover roller wrapped by a sanitary film; the film conveying assembly is arranged in the middle of the rack and is used for conveying the sanitary film required in the packaging process for the packaging assembly; the conveying clamp assembly is arranged at the end part of the rack, one end of the conveying clamp assembly is positioned at the upper part of the counting and conveying assembly, and the other end of the conveying clamp assembly is positioned at the upper part of the packaging assembly and is used for clamping the stacked zip-top can covers and conveying the zip-top can covers to the packaging assembly; the two-end welding assembly is arranged corresponding to the packaging assembly and is used for welding and sealing the films at the two ends of the zip-top can cover roller wrapped by the packaging assembly; the roller conveying assembly is arranged in the middle of the rack and used for conveying the zip-top can cover roller packaged by the packaging assembly to the two-end welding assembly; and the roller output assembly is used for outputting the zip-top can cover roller which is welded and sealed by the two-end welding assembly to a finished product stacking area. The automatic film packaging machine not only can obviously improve the automation degree of the zip-top can cover production line, saves the labor cost and has obvious economic benefit, but also greatly reduces artificial uncontrollable contact pollution and improves the sanitary safety.

The automatic film packaging machine in the above patent has certain disadvantages, firstly, in the above patent, the counting and conveying assembly needs to erect and maintain the cover body in the erected state and transfer the lid body to the set position in the erected state in the process of stacking and placing the counted pop can covers into a stack and conveying the stacked pop can covers to the designated position, but in the actual use process, the counting and conveying assembly cannot effectively erect and maintain the cover body in the erected state, and particularly, the cover body is easy to tip forward after being erected, which seriously affects the packaging efficiency of the film packaging machine; secondly, after the zip-top can covers are stacked and placed into a stack through the counting conveying assemblies of the packaging machine, the zip-top can covers need to be clamped and transferred to the positions of the packaging assemblies through the carrying clamp assemblies, the carrying action process of the carrying clamp assemblies is that the horizontal tow chain supports and the vertical tow chain supports of the clamp systems are matched to drive the clamped zip-top can covers to horizontally and vertically move for many times, and therefore the transfer process of the zip-top can covers is achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art and provides a feeding device of a simple film packaging machine, which can effectively keep a thin cover in a standing state in the feeding process and is not easy to tilt forward.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a loading attachment of simple and easy membrane chartered plane, locates in the frame of simple and easy membrane chartered plane, this frame has primary importance and second position, primary importance and second position are respectively along the interval distribution in the unanimous first direction of the horizontal direction with the frame, and loading attachment includes:

the material guide channel extends along the first direction of the rack and is used for receiving and placing the thin cover conveyed from the previous process;

the thin cover erecting device is arranged at the port position of the material guide channel and is used for erecting the thin cover which is conveyed from the previous procedure and is in a flat state and transferring the thin cover into the material guide channel;

the transverse pushing mechanism is arranged on the rack and used for pushing the thin covers which are erected in the material guide channel and stacked together from a first position to a second position along a first direction of the rack;

the thin cover raising apparatus includes:

the magnetic wheel assembly comprises a magnetic wheel arranged at the port position of the material guide channel, the axis of the magnetic wheel is vertical to the length direction of the material guide channel, the magnetic wheel is connected with the driving piece and can rotate around the axis of the magnetic wheel so as to suck the thin cover conveyed in the previous process, and the thin cover is transferred into the material guide channel after standing along with the rotation process of the magnetic wheel;

and the thin cover holding assembly is arranged adjacent to the magnetic wheel, comprises a magnetic attraction piece arranged at the port position of the material guide channel and is used for keeping the thin covers transferred into the material guide channel through the magnetic wheel in a vertical stacked state.

In order to drive the stacked thin covers to move smoothly in the first direction of the machine frame, the transverse pushing mechanism comprises:

the sliding table assembly comprises a sliding rail and a sliding seat, the sliding rail extends along a first direction of the rack, the sliding seat is arranged on the sliding rail in a sliding mode, the sliding rail is provided with a first rotating axis which is consistent with the length direction of the sliding rail, and the sliding rail is connected to the rack in a mode of rotating around the first rotating axis;

the pushing baffle plate unit is arranged on the sliding seat and at least comprises a pushing plate, the pushing plate can rotate along with the sliding rail and is provided with a pushing state which is positioned above the material guide channel and is abutted against the thin cover placed on the material guide channel and a yielding state which is far away from the upper part of the material guide channel and is positioned outside the moving path of the thin cover;

and the first driving mechanism is arranged on the rack, and the power output end of the first driving mechanism is connected with the sliding rail and drives the sliding rail to rotate around the first rotating axis.

When the transverse pushing mechanism starts to push forwards, in order to avoid that the thin cover subsequently conveyed to the material guide channel topples forwards, the pushing baffle unit comprises a thin cover caching device arranged on the sliding seat, and the thin cover caching device comprises:

the support plate assembly comprises a first support plate and a second support plate which are arranged on the sliding seat at intervals along the first direction, the first support plate is arranged close to the first position of the rack, and the second support plate is arranged far away from the first position of the rack;

the guide rod is movably arranged on the first supporting plate and the second supporting plate in a penetrating mode along the axial direction of the guide rod, the axial direction of the guide rod is consistent with the first direction of the rack, the guide rod is provided with a first end adjacent to the first supporting plate and a second end adjacent to the second supporting plate, and the second end of the guide rod is connected with the material pushing plate;

and the elastic piece acts on the guide rod and enables the second end of the guide rod to always have the tendency of moving towards the direction of the first supporting plate.

Under the cooperation of the elastic piece and the material pushing plate, the thin cover subsequently conveyed to the material guide channel can abut against the material pushing plate and compress the elastic piece, so that the subsequent thin cover cannot topple forwards even when the material pushing plate starts to push forwards, and the stability of the thin cover conveying process is ensured while the transverse material pushing mechanism is simplified.

The elastic part can adopt various prior arts, and can comprise various elastic elements such as a pressure spring, a torsion spring, a reed and the like, but in order to better match the guide rod structure, the outer peripheral surface of the guide rod is provided with a stop block which protrudes outwards in the radial direction, the elastic part is a spring sleeved on the guide rod, and the spring is correspondingly positioned between the stop block and the second supporting plate.

In order to realize the slide rail and locate the sliding seat on the slide rail and push away the rotation of material baffle unit, reach the purpose that the scraping wings is pushing away the material state and stepping down the nimble switching between the state, horizontal pushing equipment is still including locating first fixing base and the second fixing base that the horizontal interval of sliding seat set up, the length direction's of slide rail both ends correspond to rotate and connect and be in on first fixing base and the second fixing base.

Compared with the prior art, the utility model has the advantages that: the magnetic part is arranged at the bottom of the port of the material guide channel, so that the thin cover transferred to the material guide channel through the magnetic wheel is kept in a vertical stacked state under the action of the suction force of the magnetic part, and the problem that the thin cover transferred to the material guide channel is inclined forward in the continuous feeding process can be effectively avoided. In a further preferred scheme, the thin covers subsequently conveyed into the material guide channel can be buffered through the thin cover buffering device, when the material pushing plate starts to push forwards, the thin covers subsequently upwards in the material guide channel cannot topple forwards, and therefore the transverse material pushing mechanism is simplified, and meanwhile the stability of the thin cover conveying process is guaranteed.

Drawings

Fig. 1 is a schematic perspective view (with a partial protective cover) of a film wrapping machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of FIG. 1 with the protective cover removed;

FIG. 3 is a top view of FIG. 2;

fig. 4 is a schematic perspective view of a lateral pushing mechanism and a longitudinal pushing mechanism according to an embodiment of the present invention;

FIG. 5 is a left side view of FIG. 4 (with the strip platen in a closed position relative to the strip pallet);

FIG. 6 is a left side view of FIG. 4 (with the strip platen in an open position relative to the strip pallet);

FIG. 7 is a schematic perspective view of a film conveying mechanism according to an embodiment of the present invention;

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a schematic partial schematic view of a first film-tensioning roller assembly of the film feeding mechanism in accordance with an embodiment of the present invention;

FIG. 10 is a front view of a thermal cutoff mechanism of an embodiment of the present invention;

FIG. 11 is a schematic structural view illustrating a state in which a thermal cutting mechanism and a film feeding mechanism are engaged with each other according to an embodiment of the present invention;

FIG. 12 is a front view of a thermoplastic mechanism of an embodiment of the present invention;

FIG. 13 is a top view of FIG. 12;

fig. 14 is a side view of fig. 12.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Referring to fig. 1-14, a simple film wrapping machine includes a frame 10, a feeding device, a material transfer device, a film wrapping device, a roller conveying mechanism 90, and a heat shaping mechanism 91. The feeding device comprises a thin cover erecting device 30 and a transverse pushing mechanism 20. The thin cover erecting device 30, the transverse pushing mechanism 20, the material transferring device, the film wrapping device, the roller conveying mechanism 90 and the heat shaping mechanism 91 are all arranged on the machine frame 10.

The rack 10 has a first position, a second position and a third position, wherein the first position and the second position are respectively spaced along a first direction (as shown by M1 in fig. 3) consistent with the transverse direction of the rack 10, and the second position and the third position are respectively spaced along a second direction (as shown by M2 in fig. 3) consistent with the longitudinal direction of the rack 10; i.e. the first direction is perpendicular to the second direction. In this embodiment, the thin cover is first conveyed from the first position to the second position along the first direction of the rack 10 by the transverse pushing mechanism 20, then conveyed from the second position to the third position along the second direction of the rack 10 by the material transfer device (the longitudinal pushing mechanism 40), and then wrapped by the film wrapping device, after the initial wrapping is completed, the thin cover is continuously pushed forward along the second direction of the rack 10 by the roller conveying mechanism 90, in the moving process, the thermoplastic mechanism 91 can heat and shrink the thin film primarily wrapped on the thin cover roller, and after the processing is completed, the thin cover can be continuously driven to the position of the feeding slideway 11 arranged on the rack 10 by the roller conveying mechanism 90 to perform feeding.

The frame has a material guiding passage 21 extending in a first direction of the frame 10 for receiving and placing the thin covers transferred from the previous process. The cross section of the material guiding channel 21 is preferably designed to be C-shaped, and the opening is upward, wherein the inner diameter of the material guiding channel 21 is matched with the outer diameter of the thin cover, so that the thin cover can be stably conveyed in a standing state. And the transverse pushing mechanism 20 is used for pushing the thin covers 101 which are erected in the material guide channel 21 and stacked together from the first position to the second position along the first direction of the rack 10.

Referring to fig. 2 and 4, the lateral pushing mechanism 20 includes a slide table assembly, a pushing fence unit 24, and a first driving mechanism 25. In fig. 1, the lateral pushing mechanism 20 is covered by a shield, and fig. 2 is a schematic structural view of fig. 1 with the shield and other parts hidden.

Referring to fig. 4, the sliding table assembly includes a sliding rail 22 extending along the first direction of the frame 10 and a sliding seat 23 slidably disposed on the sliding rail 22, wherein the sliding rail 22 is disposed at one side of the material guiding channel 21, i.e., is disposed in parallel with the material guiding channel 21. Since the moving path of the thin cover in the first direction is relatively long, the matching structure of the sliding rail 22 and the sliding seat 23 of the present embodiment preferably employs a magnetic coupling type rodless cylinder, wherein the cylinder body of the magnetic coupling type rodless cylinder corresponds to the sliding rail 22, and the sliding block on the cylinder body of the magnetic coupling type rodless cylinder corresponds to the sliding seat 23.

With continued reference to fig. 4, the slide rail 22 of the present embodiment has a first rotation axis 220 aligned with the length direction thereof, and the slide rail 22 is rotatably connected to the frame 10 about the first rotation axis 220. Specifically, a first fixing seat 27 and a second fixing seat 28 fixed to the frame 10 are further disposed at an interval in the first direction of the frame 10, and two ends of the slide rail 22 are rotatably connected to the first fixing seat 27 and the second fixing seat 28 through respective bearings.

Referring to fig. 4, the first driving mechanism 25 is disposed on the frame 10, and a power output end of the first driving mechanism is movably connected to the slide rail 22, and may be implemented in a hinged manner or the like, so as to drive the slide rail 22 to rotate around the first rotation axis 220. The first driving mechanism 25 of the present embodiment may employ a motor or a cylinder.

Referring to fig. 4, the pushing material baffle unit 24 includes a pushing material plate 241 disposed on the sliding seat 23 and a thin cover buffering device, and the thin cover buffering device specifically includes a supporting plate assembly, a guiding rod 263 and an elastic member 265, wherein the supporting plate assembly includes a first supporting plate 261 and a second supporting plate 262 spaced along a first direction on the sliding seat 23, wherein the first supporting plate 261 is disposed adjacent to a first position of the rack 10, and the second supporting plate 262 is disposed away from the first position of the rack 10. A guide rod 263 is movably inserted through the first support plate 261 and the second support plate 262 in an axial direction thereof, wherein the guide rod 263 has a first end adjacent to the first support plate 261 and a second end adjacent to the second support plate 262, and the axial direction thereof coincides with the first direction of the frame 10.

Referring to fig. 4, the material pushing plate 241 is connected to the second end of the guiding rod 263, wherein the material pushing plate 241 is a strip-shaped plate, and the material pushing plate 241 can slide along the sliding rail 22 along with the sliding seat 23 and can also rotate along with the rotation of the sliding rail 22, so that the material pushing plate has two states: namely, the pushing state and the abdicating state are provided, in the pushing state, the free end of the pushing plate 241 is located above the material guiding channel 21 and abuts against the thin cover placed on the material guiding channel 21, so that the thin cover can be pushed to move when moving forward along with the sliding seat 23. In the abdicating state, the material pushing plate 241 can be far away from the upper side of the material guiding channel 21 and outside the moving path of the thin cover, so that when the material pushing plate is reset along with the sliding seat 23, interference on the thin cover which is subsequently pushed to the port position of the material guiding channel 21 is avoided.

Referring to fig. 4, the outer circumferential surface of the guiding rod 263 is provided with a stopper 264 protruding radially outward, the elastic member 265 is a spring sleeved on the guiding rod 263, one end of the spring abuts against the stopper 264, and the other end abuts against the second supporting plate 262, so that the second end of the guiding rod 263 always has a tendency to move towards the first supporting plate 261. Of course, the elastic element can also be in the form of a tension spring, and the above purpose can be achieved.

Under the cooperation of the elastic member 265 and the material pushing plate 241, the thin covers subsequently conveyed into the material guiding channel 21 abut against the material pushing plate 241 and compress the elastic member 265, so that even when the material pushing plate 241 starts to push forwards, the subsequent thin covers cannot topple forwards, and the stability of the thin cover conveying process is ensured while the transverse material pushing mechanism 20 is simplified.

In the simple film packaging apparatus, a thin cover standing device 30 is provided at the port position of the material guiding path for transferring the thin cover, which is laid flat, to the port position of the material guiding path 21 by using a driving belt (not shown) in the previous process of the transverse pushing mechanism 20, and for engaging with the driving belt and achieving the purpose of standing and keeping the thin cover in a standing state. The thin cover erecting device 30 comprises a magnetic wheel assembly and a thin cover holding assembly, wherein the magnetic wheel assembly comprises a magnetic wheel 31 arranged at the port position of the material guiding channel 21, the axis of the magnetic wheel 31 is perpendicular to the length direction of the material guiding channel 21, the magnetic wheel 31 is connected with a driving piece and can rotate around the axis thereof (the driving piece can adopt a motor) so as to attract the thin cover conveyed in the previous process, and the thin cover is transferred into the material guiding channel 21 after being erected along with the rotation process of the magnetic wheel 31. The thin cover holding assembly comprises a magnetic part 32 arranged at the port position of the material guiding channel 21, the magnetic part 32 is specifically arranged at the bottom of the guide groove, and the thin cover transferred into the material guiding channel 21 can be kept in a vertical stacked state under the action of the magnetic part 32, so that the problem of toppling is avoided.

The material transferring device of this embodiment is a longitudinal pushing mechanism 40, the longitudinal pushing mechanism 40 is disposed at a second position of the rack 10, and is configured to receive the stacked thin covers pushed by the transverse pushing mechanism 20, and drive the stacked thin covers to move along a second direction of the rack 10, and specifically, the thin covers can be pushed from the second position of the rack 10 to a third position of the rack 10 for performing a film coating process, referring to fig. 2 and 3,

the longitudinal pushing mechanism 40 includes a thin cover holding device 41 and a second driving mechanism 46, for convenience of implementation, a connecting seat 47 is provided on a power output end of the second driving mechanism 46, and the thin cover holding device 41 is provided on the connecting seat 47, so as to be capable of reciprocating in the second direction of the frame 10. The second driving mechanism 46 may be a motor or a cylinder.

Referring to fig. 4, the thin cover holding device 41 includes a supporting plate 42 capable of receiving the stacked thin covers, a pressing plate 43 located above the supporting plate 42 and capable of opening and closing relative to the supporting plate 42, and a third driving mechanism 48 for driving the pressing plate 43 to open and close relative to the supporting plate 42, and preferably, the extending directions of the supporting plate 42 and the pressing plate 43 are consistent with the first direction of the rack 10, that is, the supporting plate 42 and the pressing plate 43 may be bent plates or arc plates with opposite openings (the opening of the supporting plate is upward, and the opening of the pressing plate is downward). In a state where the pallet 42 is closed with respect to the pallet 42, a thin cover holding passage 45 into which the stacked thin covers enter and which is held in an erected state is formed between the pressing plate 43 and the pallet 42, and the thin cover holding passage 45 is engaged with the port of the material guiding passage 21.

Referring to fig. 5, the inner wall surface of the pressing plate 43 is provided with a brush 44 for pressing and holding the stacked thin covers. The brush 44 is arranged to keep the stacked thin covers transferred to the thin cover holding channel through the material guiding channel 21 in the standing state, and to keep the gap (in the closed state) reserved between the pressing plate 43 and the supporting plate 42 relatively large (slightly larger than the outer diameter of the thin covers) so as to avoid interference problems in the process of entering the thin cover holding channel or in the advancing process of the material pushing plate 241.

Referring to fig. 4-6, in order to realize the opening and closing action between the pressing plate 43 and the supporting plate 42, the pressing plate 43 of the thin cover clamping device 41 is rotatably connected to the connecting base 47, the connecting base 47 is provided with the third driving mechanism 48, and the power output end of the third driving mechanism 48 is connected to the pressing plate 43 and can drive the pressing plate 43 to rotate relative to the connecting base 47, so as to realize the opening and closing action with the supporting plate 42.

Referring to fig. 4, in order to avoid the interference between the opening and closing actions of the pressing plate 43 and the connecting seat 47, the connecting seat 47 has two supporting arms 471 arranged in parallel and extending upward, a rotating shaft 472 is arranged between the two supporting arms 471, and the pressing plate 43 is rotatably connected to the rotating shaft 472. The third driving mechanism 48 of the present embodiment is preferably a pneumatic cylinder, the cylinder body of which is hinged on the connecting seat 47, and the power output end (i.e. the piston rod) of the pneumatic cylinder is hinged with the pressure plate 43.

Referring to fig. 2 and 7, the film wrapping apparatus includes a film conveying mechanism 50 and a thermal cutting mechanism 80, and the film conveying mechanism 50 includes a first film placing assembly and a second film placing assembly. The first film placing assembly is located below, the second film placing assembly is located above, and the film 100 laid on the first film placing assembly and the film 100 laid on the second film placing assembly are bonded together (automatically bonded together after being cut by the thermal cutting mechanism 80). The film areas of the films on the two film placing assemblies at the bonding positions are vertically arranged and are correspondingly positioned in the forward path of the longitudinal pushing mechanism 40. Therefore, the film on the film conveying mechanism 50 can be pressed by the longitudinal material pushing mechanism 40 to release the film 100 required for packaging (combined with the driving mechanism to release the film) in the process of advancing the longitudinal material pushing mechanism 40.

Referring to fig. 7, the first film unwinding assembly includes a first fixed film roll 51 for winding the film, a first film tensioning roller assembly 52 for laying the film, and a sixth driving mechanism 53 for driving the first fixed film roll 51 to rotate around its axis to unwind the film. The first film tensioning roller assembly 52 includes a plurality of fixed rollers mounted on the frame 10 to lay the film in an S-shaped or M-shaped configuration. The first film tension roller assembly 52 includes, in addition to the above-described fixed roller, a tension roller that is movably adjustable by its own weight. Specifically, the first film tensioning roller assembly 52 includes two first brackets 71, a first tensioning roller 72, and a first proximity switch 73. The two first brackets 71 are vertically arranged and are arranged at intervals in the first direction of the rack 10, and the two opposite surfaces of the two first brackets 71 are provided with vertically arranged first sliding grooves 710. The two ends of the first tensioning roller 72 are correspondingly arranged in the first sliding grooves 710 on the two first brackets 71 in a vertically sliding manner, the first tensioning roller 72 tensions the film laid on the first film tensioning roller assembly 52 under the action of self gravity, and the first proximity switch 73 is arranged on the first bracket 71 and used for identifying when the first tensioning roller 72 moves to a set position and outputting a signal for starting the sixth driving mechanism 53 to the control system so as to release the film wound on the first film fixed roll 51.

In order to make the up-and-down movement of the first tensioning roller 72 more stable, the two ends of the first tensioning roller 72 are coaxially provided with the gear 77, the side wall of the first sliding chute 710 of the first bracket 71 is provided with the vertically arranged rack 78, and the gear 77 on the first tensioning roller 72 is meshed with the rack 78 in the first sliding chute 710, which is shown in detail in fig. 7.

Referring to fig. 7, the second film releasing assembly is positioned above the first film releasing assembly. The second film unwinding assembly comprises a second fixed film roll 54 for winding the film, a second film tensioning roller assembly 55 for laying the film, and a seventh driving mechanism 56 for driving the second fixed film roll 54 to rotate on its axis to unwind the film.

Referring to fig. 7, the second film tensioning roller assembly 55 also includes a plurality of fixed rollers mounted on the frame 10 to lay the film in an S-shaped or M-shaped configuration. The second film take-up roll assembly 55 includes, in addition to the above-described fixed roll, a take-up roll that is movably adjustable by its own weight. Specifically, the second film tensioning roller assembly 55 includes two second brackets 74, a second tensioning roller 75 and a second proximity switch 76, the two second brackets 74 are vertically disposed and are spaced in the first direction of the frame 10, two opposite surfaces of the two second brackets 74 are both provided with a second sliding slot 740 vertically disposed, two ends of the second tensioning roller 75 can be correspondingly disposed in the second sliding slots 740 on the two second brackets 74 in a vertically sliding manner, the second tensioning roller 75 tensions the film laid on the second film tensioning roller assembly 55 under the action of its own gravity, and the second proximity switch 76 is disposed on the second brackets 74 and is configured to identify when the second tensioning roller 75 moves up to a set position, and output a signal for starting the seventh driving mechanism 56 to the control system so as to release the film wound on the second film fixing roll 54.

Similarly, the gear 77 is coaxially installed at both ends of the second tension roller 75, the rack 78 is vertically installed on the sidewall of the second chute 740 of the second bracket 74, and the gear 77 on the second tension roller 75 is engaged with the rack 78 in the second chute 740.

In the process of advancing the longitudinal material pushing mechanism 40, the film laid on the film conveying mechanism 50 is pressed by the longitudinal material pushing mechanism 40, and can drive the first tensioning roller 72 of the first film tensioning roller assembly 52 and the second tensioning roller 75 of the second film tensioning roller assembly 55 to slide upwards along the corresponding first sliding chute 710 and second sliding chute 740, when the film is moved to the set position, the corresponding proximity switch can recognize the position and output a signal for starting the seventh driving mechanism 56 (and the sixth driving mechanism 53) to the control system so as to release the film required by the envelope, after the thermal cutting mechanism 80 finishes cutting off the redundant film after the envelope, the film can move downwards under the self-gravity action of the first tensioning roller 72 and the second tensioning roller 75, at the moment, the corresponding proximity switch outputs a signal for closing the seventh driving mechanism 56 (and the sixth driving mechanism 53) to the control system so as to stop the film supply, thereby achieving the purpose of accurate film supply of the film conveying mechanism 50.

The sixth driving mechanism 53 of the first film releasing assembly and the seventh driving mechanism 56 of the second film releasing assembly may both adopt driving motors.

Referring to fig. 3 and 10, a thermal cutting mechanism 80 is provided at a third position of the frame 10 for wrapping the film around the outer circumference of the stacked thin covers and cutting the excess film after wrapping to form a thin cover roll 102 primarily wrapped with the film.

Referring to fig. 10, the thermal cutoff mechanism 80 includes a moving rack assembly and a moving rack driving mechanism. The movable frame assembly comprises a first movable frame 81 and a second movable frame 83 located above the first movable frame 81, the first movable frame 81 and the second movable frame 83 are strip-shaped frames, the length direction of the first movable frame 81 is consistent with the first direction of the rack 10, the first movable frame 81 and the second movable frame 83 can be constrained on the rack 10 in a sliding mode in an up-down direction in a mode of being relatively close to or far away from each other, a first electric heating plate 811 is arranged at the top of the first movable frame 81 along the length direction of the first movable frame, and a second electric heating plate 831 is arranged at the bottom of the second movable frame 83 along the length direction of the second movable frame. The moving frame driving mechanism comprises a fourth driving mechanism 82 and a fifth driving mechanism 84, wherein a power output end of the fourth driving mechanism 82 is connected with the first moving frame 81, and the fifth driving mechanism 84 is connected with the second moving frame 83, so that the first moving frame 81 and the second moving frame 83 can move oppositely, the first electric heating plate 811 and the second electric heating plate 831 are butted, and redundant thin films wrapped outside the stacked thin covers are cut off.

Referring to fig. 2, the drum transfer mechanism 90 includes a rotating roller assembly that can rotate cyclically in the second direction of the frame 10. The rotating roller assembly includes a plurality of rotating rollers 900 sequentially arranged at intervals in the second direction of the frame 10, any two adjacent rotating rollers 900 form a positioning point for positioning and upwardly supporting the thin-cover drum, and each rotating roller 900 can also rotate around its own axis to drive the thin-cover drum placed on the positioning point to rotate around its own axis. The rotating roller assembly of this embodiment can adopt a chain wheel structure which can realize the circular rotation of the rotating roller assembly and the rotation of the rotating roller 900 around its own axis in the prior art, for example, a structure similar to that of the roller conveying assembly in the automatic film packaging machine disclosed in the chinese patent application No. CN201510276308.3 (No. CN 104859885B).

After the thin cover clamping device 41 of the longitudinal pushing mechanism 40 pushes the thin covers which are vertically stacked together to the third position of the machine frame, the pressing plate of the thin cover clamping device 41 is opened, the stacked thin covers which are clamped by the thin cover clamping device can be released to a positioning point of the roller conveying mechanism 90, namely the thin covers are received by two rotating rollers of the roller conveying mechanism 90, and then the thin cover clamping device 41 is retracted to the initial position. The thermal cutting mechanism 80 acts to wrap the film around the stacked lids and cut off the excess film wrapped around the stacked lids to form a primary film-wrapped lid drum 102, and the lid drum 102 is driven by the drum transport mechanism 90 to move forward in the second direction of the frame.

Referring to fig. 12 to 14, a thermoplastic molding mechanism 91 is provided on the frame 10 for heat-molding the films at the two ends of the thin-cover drum and the films wrapped around the outer circumference of the thin-cover drum. The thermoplastic molding mechanism 91 of the present embodiment includes a port molding device and an outer periphery molding device.

Referring to fig. 12 to 14, the port shaping apparatus includes a stand 92, hot air injection heads 93 provided at both ends of the stand 92, and two eighth driving mechanisms 94 provided on the stand 92. The stand 92 is located above the roller transfer mechanism 90 and extends in the first direction of the frame 10. The two hot air injection heads 93 are slidably arranged on the vertical frame 92 and can reciprocate along the length direction of the vertical frame 92, and specifically, the power output ends of the two eighth driving mechanisms 94 are respectively connected with the two hot air injection heads 93, so that the two hot air injection heads 93 can be driven to correspond to the port positions close to the thin cover roller placed on the rotating roller assembly, and the thin films at the two ends of the thin cover roller are heated and shaped. Wherein, when heating two ports of thin lid cylinder through above-mentioned two hot gas injection head 93, the steerable (through proximity switch cooperation) live-rollers 900 of cylinder transport mechanism 90 rotates around self axis to it is rotatory around self axis to drive thin lid cylinder at the dwell position, thereby effectively improves moulding effect and speed.

Referring to fig. 12 to 14, the outer circumference shaping means includes a hot air injection rack 95 located above the drum transferring mechanism 90 and extending in the first direction of the frame 10, the hot air injection rack 95 having a strip-shaped air outlet 950 in correspondence with the length direction of the hot air injection rack 95. The strip-shaped air outlet 950 is disposed downward and can spray hot air to the thin-covered drum placed on the positioning point during rotation around its axis. The two hot air jetting heads 93 share one stand 92 with the hot air jetting stand 95. Specifically, when the periphery of the thin-covered drum is heated by the hot air injection frame 95, the drum conveying mechanism 90 can also control (through the cooperation of the proximity switch) the rotating roller 900 to rotate around the axis of the thin-covered drum, so that the thin-covered drum is driven to rotate around the axis of the thin-covered drum at the stop position, and the shaping effect and the shaping speed are improved.

The heating and shaping processes of the two hot air injection heads 93 and the hot air injection frame 95 may be performed at the same positioning point, or may be performed sequentially at two positions in the moving direction of the rotating roller assembly, as shown in fig. 14, in order to perform reasonable spatial arrangement on the two hot air injection heads 93 and the hot air injection frame 95, in this embodiment, the two ports of the thin film on the outer periphery of the thin-covered drum are first heated and shaped by the two hot air injection heads 93 at the previous position, and then the thin film on the outer periphery of the thin-covered drum is heated and shaped by the hot air injection frame 95 when the hot air injection heads 93 move to the next position along with the rotating roller assembly.

The thermoplastic molding mechanism 91 further includes a hot gas generating device (not shown) for supplying hot gas to the two hot gas ejection heads 93 and the hot gas ejection rack 95, and the hot gas generating device may be constructed by using various electric heating elements in the related art in cooperation with a blower.

After passing through the heat shaping mechanism 91, the film is tightly wrapped around the thin-cover roller, and then the thin-cover roller is driven by the roller conveying mechanism 90 to move towards the feeding chute 11 until the film is fed from the feeding chute.

Claims (5)

1. The utility model provides a loading attachment of simple and easy membrane chartered plane, locates on frame (10) of simple and easy membrane chartered plane, this frame (10) have primary importance and second position, primary importance and second position are respectively along the unanimous interval distribution in the primary importance with the horizontal direction of frame (10), and loading attachment includes:

a material guide channel (21) extending along a first direction of the frame (10) and used for receiving and placing the thin cover conveyed from the previous process;

the thin cover erecting device (30) is arranged at the position of a port of the material guide channel and is used for erecting the thin cover which is conveyed from the previous procedure and is in a flat state and transferring the thin cover into the material guide channel;

the transverse pushing mechanism (20) is arranged on the rack (10) and used for pushing the thin covers which are erected in the material guide channel (21) and stacked together from a first position to a second position along the first direction of the rack (10);

characterized in that said thin lid erecting means (30) comprise:

the magnetic wheel assembly comprises a magnetic wheel (31) arranged at the port position of the material guide channel, the axis of the magnetic wheel (31) is vertical to the length direction of the material guide channel, the magnetic wheel (31) is connected with a driving piece and can rotate around the axis of the magnetic wheel so as to suck the thin cover conveyed in the previous process, and the thin cover is transferred into the material guide channel after standing along with the rotation process of the magnetic wheel (31);

and the thin cover holding assembly is arranged adjacent to the magnetic wheel and comprises a magnetic attraction piece (32) arranged at the port position of the material guide channel so as to keep the thin covers transferred into the material guide channel through the magnetic wheel (31) in a vertical stacking state.

2. The feeding device of the simple membrane wrapping machine according to claim 1, wherein the transverse pushing mechanism (20) comprises:

the sliding table assembly comprises a sliding rail (22) extending along a first direction of the rack (10) and a sliding seat (23) arranged on the sliding rail (22) in a sliding mode, the sliding rail (22) is provided with a first rotating axis (220) consistent with the length direction of the sliding rail, and the sliding rail (22) is connected to the rack (10) in a mode of rotating around the first rotating axis (220);

the pushing baffle unit (24) is arranged on the sliding seat (23) and comprises a pushing plate (241), the pushing plate (241) can rotate along with the sliding rail (22), and the pushing plate has a pushing state which is positioned above the material guide channel (21) and is abutted against a thin cover placed on the material guide channel (21) and a yielding state which is far away from the upper part of the material guide channel (21) and is positioned outside a moving path of the thin cover;

the first driving mechanism (25) is arranged on the rack (10), and the power output end of the first driving mechanism is connected with the sliding rail (22) and drives the sliding rail (22) to rotate around the first rotating axis (220).

3. The feeding device of the simple membrane bag machine according to claim 2, characterized in that: the material pushing baffle plate unit (24) comprises a thin cover caching device arranged on the sliding seat (23), and the thin cover caching device comprises:

a support plate assembly including a first support plate (261) and a second support plate (262) spaced apart in the first direction on the sliding seat (23), the first support plate (261) being disposed adjacent to a first position of the frame (10), the second support plate (262) being disposed away from the first position of the frame (10);

a guide rod (263) movably inserted through the first support plate (261) and the second support plate (262) along the axial direction thereof, the axial direction of the guide rod (263) is consistent with the first direction of the frame (10), the guide rod (263) has a first end adjacent to the first support plate (261) and a second end adjacent to the second support plate (262), and the second end of the guide rod (263) is connected with the material pushing plate (241);

and the elastic piece (265) acts on the guide rod (263) and enables the second end of the guide rod (263) to always have the tendency of moving towards the direction of the first supporting plate (261).

4. The feeding device of the simple membrane bag machine according to claim 3, characterized in that: the outer peripheral surface of the guide rod (263) is provided with a stopper (264) protruding outwards in the radial direction, the elastic piece (265) is a spring sleeved on the guide rod (263), and the spring is correspondingly positioned between the stopper (264) and the second supporting plate (262).

5. The feeding device of the simple membrane bag machine according to claim 4, characterized in that: horizontal pushing equipment (20) still including locating first fixing base (27) and second fixing base (28) that the interval set up are horizontal of sliding seat (23), the length direction's of slide rail (22) both ends correspond to rotate and connect on first fixing base (27) and second fixing base (28).

Images