CN214730024U - Simple film packaging equipment for thin cover - Google Patents

Abstract

The utility model relates to a simple and easy membrane equipment for packing that thin lid was used, include: a frame; a material guide channel; the transverse pushing mechanism is 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 longitudinal material pushing mechanism is used for receiving the thin cover pushed by the transverse material pushing mechanism and driving the thin cover to be pushed forwards along the second direction of the rack; the film wrapping device comprises a film conveying mechanism and a thermal cutting mechanism, wherein a film on the film conveying mechanism is used for conveying a film required by packaging, and the thermal cutting mechanism is used for wrapping the film on the periphery of the stacked thin covers and cutting off redundant film after wrapping so as to form a thin cover roller wrapped with the film preliminarily; a drum transport mechanism including a rotating roller assembly for transporting the thin-cover drum forward in a second direction; and the thin film on the thin cover roller is subjected to heating and shaping treatment. The feeding process of the stacked thin covers can be effectively simplified, and therefore the packaging efficiency is improved.

Description

Simple film packaging equipment for thin cover

Technical Field

The utility model relates to a membrane equipment for packing technical field especially relates to a simple and easy membrane equipment for packing that thin lid was used.

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.

However, the automatic film packaging machine in the above patent still has certain deficiencies, the pop-top can cover is overlapped and placed into a stack through the counting conveying assembly of the packaging machine, and needs to be clamped and transferred to the position of the packaging assembly through the carrying clamp assembly, and the carrying action process of the carrying clamp assembly is to drive the clamped pop-top can cover to horizontally and vertically move for many times through the cooperation of the horizontal drag chain support and the vertical drag chain support of the clamp system, so as to realize the transfer process of the pop-top can cover.

Therefore, further improvement is required in the existing film packaging apparatus for thin lids.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a can effectively simplify the material loading process of the thin lid of stacking to improve the simple and easy membrane equipment for packing that the thin lid of packing efficiency was used.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a simple film packaging apparatus for thin lids, comprising:

the rack is provided with a first position, a second position and a third position, wherein the first position and the second position are respectively distributed at intervals along a first direction consistent with the transverse direction of the rack, and the second position and the third position are respectively distributed at intervals along a second direction consistent with the longitudinal direction of the rack;

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 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;

the longitudinal material pushing mechanism is arranged at the second position of the rack, is provided with a thin cover clamping channel which can be connected with the material guide channel and can be opened and closed up and down, and is used for receiving the stacked thin covers pushed by the transverse material pushing mechanism, driving the stacked thin covers in the thin cover clamping channel to be pushed to the third position of the rack from the second position of the rack, and opening the thin cover clamping channel to release the stacked thin covers;

the film wrapping device is arranged on the rack and comprises a film conveying mechanism and a thermal cutting mechanism, wherein the film conveying mechanism can convey a film to the area of the forward path of the longitudinal material pushing mechanism, vertically arrange the film in the area and release the film required by packaging under the pressure of the longitudinal material pushing mechanism in the forward process of the longitudinal material pushing mechanism; the hot cutting mechanism is arranged at the third position of the rack and is used for wrapping the film on the periphery of the stacked thin covers and cutting off the redundant film after wrapping so as to form a thin cover roller wrapped with the film preliminarily;

the roller conveying mechanism is arranged on the rack, runs in a roundabout mode in the second direction of the rack and is used for conveying the thin cover roller wrapped with the thin film;

and the thermoplastic mechanism is arranged on the rack and used for heating and shaping the films at the two ends of the thin cover roller and the films wrapped on the periphery of the thin cover roller.

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 unit is arranged on the sliding seat and 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 so as to drive the sliding rail to rotate around the first rotating axis.

When the transverse pushing mechanism starts to push forwards, in order to avoid forward toppling of a thin cover subsequently conveyed to the material guide channel, the pushing baffle unit comprises a thin cover caching device, 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 still includes first fixing base and the second fixing base that sets up along the first direction interval of frame, 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.

In order to achieve the object of maintaining the thin cover in the standing state after the thin cover is standing up, the thin cover standing device further comprises a thin cover standing device arranged on the frame, and the thin cover standing device comprises:

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, and the magnetic wheel can rotate around the axis of the magnetic wheel so as to 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 comprises a magnetic piece arranged at the port position of the material guide channel and is used for holding the thin covers transferred into the material guide channel in a vertical stacking state.

In order to realize conveniently receiving the mesh that stacks the thin lid that the propelling movement was come on the guide passageway, vertical pushing equipment includes:

the thin cover clamping device comprises a supporting plate, a pressing plate and a third driving mechanism, wherein the supporting plate can bear thin covers which are stacked together, the pressing plate is positioned above the supporting plate, the third driving mechanism drives the pressing plate to open and close relative to the supporting plate, and a thin cover clamping channel is formed between the pressing plate and the supporting plate in a state that the pressing plate is closed relative to the supporting plate;

and the power output end of the second driving mechanism is connected with the thin cover clamping device and can drive the thin cover clamping device to reciprocate along the second direction of the rack.

In order to ensure that the stacked thin covers conveyed into the thin cover clamping channel through the material guide channel are still kept in the standing state and avoid the problem of toppling, the inner wall surface of the pressure plate is provided with a brush so as to keep the stacked thin covers pushed into the thin cover clamping channel by the transverse pushing mechanism in the standing state.

The inner wall surface of the pressing plate is provided with the hairbrush, so that the thin covers which are stacked together and conveyed to the thin cover clamping channel through the material guide channel can still be kept in a standing state, and the reserved gap (in a closed state) between the pressing plate and the supporting plate is relatively large (slightly larger than the outer diameter of the thin cover) so as to avoid the problem of interference in the process that the thin covers enter the thin cover clamping channel or the advancing process of the material pushing plate.

In order to realize the opening and closing action between the pressing plate and the supporting plate, the power output end of the second driving mechanism is provided with a connecting seat, the thin cover clamping device is arranged on the connecting seat, the pressing plate of the thin cover clamping device is rotatably connected to the connecting seat, and the power output end of the third driving mechanism is connected with the pressing plate and can drive the pressing plate to rotate relative to the connecting seat.

In order to facilitate rapid cutting of an excess of the thin film to be wrapped on the outer periphery of the stacked thin covers, the thermal cutting mechanism includes:

the moving frame assembly comprises a first moving frame and a second moving frame positioned above the first moving frame, the first moving frame and the second moving frame are strip-shaped frames, the length direction of the first moving frame is consistent with the first direction of the rack, the first moving frame and the second moving frame can be constrained on the rack in a sliding mode in an up-down direction in a relatively close or far mode, a first electric heating plate is arranged at the top of the first moving frame along the length direction of the first moving frame, and a second electric heating plate is arranged at the bottom of the second moving frame along the length direction of the second moving frame;

and the moving frame driving mechanism comprises a fourth driving mechanism and a fifth driving mechanism, the power output end of the fourth driving mechanism is connected with the first moving frame, and the fifth driving mechanism is connected with the second moving frame.

In order to flexibly release the thin film required in the process of wrapping the thin cover, the thin film conveying mechanism comprises:

the first film unwinding assembly comprises a first film fixing roll for winding the film, a first film tensioning roll assembly for laying the film and a sixth driving mechanism for driving the first film fixing roll to rotate along the axis of the first film fixing roll to release the film;

and the second film releasing assembly is positioned above the first film releasing assembly and comprises a second film fixing roll for winding the film, a second film tensioning roller assembly for laying the film and a seventh driving mechanism for driving the second film fixing roll to rotate along the axis thereof so as to release the film.

In order to realize the purpose of accurately supplying the film by the film conveying mechanism, the first film tensioning roller component at least comprises two first brackets, a first tensioning roller and a first proximity switch, the two first brackets are vertically arranged, and are arranged at intervals in the first direction of the frame, two opposite surfaces of the two first supports are both provided with vertically arranged first sliding chutes, two ends of the first tensioning roller can be correspondingly arranged in the first sliding grooves on the two first brackets in a vertical sliding manner, the first tensioning roller tensions a film laid on the first film tensioning roller component under the action of self gravity, the first proximity switch is arranged on the first bracket, the control system is used for identifying when the first tensioning roller moves up to the set position and outputting a signal for starting the sixth driving mechanism to the control system so as to release the film wound on the first film fixed roll;

second film tensioning roller assembly includes two second supports, second tensioning roller and second proximity switch at least, the vertical setting of two second supports, and interval arrangement on the first direction of frame all offers the second spout of vertical setting on two relative faces of two second supports, the both ends of second tensioning roller can correspond and locate in the second spout on two second supports with sliding from top to bottom, the second tensioning roller is to laying the film tensioning on second film tensioning roller assembly under self action of gravity, the second proximity switch is located on the second support for discerning when moving up to setting the position to the second tensioning roller, and to control system output start seventh actuating mechanism's signal, with the film of release winding on the fixed book of second film.

In order to realize the conveying of the thin cover roller finished by the primary thin film, the roller conveying mechanism comprises a rotating roller assembly capable of circularly rotating in the second direction of the rack, the rotating roller assembly comprises a plurality of rotating rollers which are sequentially arranged in the second direction of the rack at intervals, any two adjacent rotating rollers form a positioning point for positioning and upwards supporting the thin cover roller, and each rotating roller can also rotate around the axis of the rotating roller so as to drive the thin cover roller placed on the positioning point to rotate around the axis of the rotating roller.

In order to carry out the shaping shrink treatment to the port and the peripheral part film of the thin-cover roller, guarantee the effect of thin-cover diolame, the hot plastic mechanism includes:

the port shaping device comprises a vertical frame, hot air injection heads arranged at two ends of the vertical frame and two eighth driving mechanisms arranged on the vertical frame, wherein the vertical frame is positioned above the roller conveying mechanism and is arranged in an extending manner along the first direction of the rack, the two hot air injection heads are arranged on the vertical frame in a sliding manner and can move back and forth along the length direction of the vertical frame, and the power output ends of the two eighth driving mechanisms are respectively connected with the two hot air injection heads, so that the two hot air injection heads can be driven to correspondingly approach to port positions of a thin cover roller arranged on the rotating roller assembly to heat and shape films at two ends of the thin cover roller;

moulding device of periphery, including being located cylinder transport mechanism's top, and follow the hot gas that the first direction of frame extends sprays the frame, and this hot gas sprays the frame and has the strip gas outlet unanimous with the length direction of hot gas injection frame, and this strip gas outlet sets up down to can spray hot gas to placing the thin lid cylinder on the location point rotating the in-process around self axis.

In order to simplify the structure of the thermoplastic mechanism and reduce the occupied space, the hot air injection frame is also arranged on the stand.

Compared with the prior art, the utility model has the advantages that: the utility model discloses a thin lid is with material loading process of simple and easy membrane equipment for packing's thin lid is realized through horizontal pushing equipment and vertical pushing equipment's cooperation, and wherein, vertical pushing equipment has thin lid centre gripping passageway, can directly be used for receiving through horizontal pushing equipment propelling movement come, stack thin lid together to the second direction that drives this thin lid that stacks removes to diolame device position and carries out the diolame operation. The film packaging equipment does not need to carry the clamp assembly to drive the clamped zip-top can cover to horizontally and vertically move for many times in the prior art, so that the transfer of the thin cover (zip-top can cover) is realized, the feeding process of the thin cover is effectively simplified, and the packaging efficiency is improved. In the preferred scheme, the thin cover clamping channel formed by matching the pressing plate of the thin cover clamping device with the supporting plate directly receives the stacked thin covers transmitted by the material guide channel of the transverse pushing mechanism, wherein the pressing plate and the supporting plate clamp the peripheries of the thin covers, so that the problem that a carrying clamp system (clamped at two ends in the overlapping direction of the thin covers) in the prior art is not firm in clamping can be effectively solved, and the risk of falling is avoided.

Drawings

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

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 in an embodiment of the present invention;

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

FIG. 6 is a left side view of FIG. 4 (platen open relative to 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 structural view of a first film-tensioning roller assembly of the film conveying mechanism of an embodiment of the present invention;

fig. 10 is a front view of a thermal cut-off mechanism according to an embodiment of the present invention;

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

fig. 12 is a front view of a thermoplastic forming mechanism according to 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 present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 14, a simple film packaging apparatus for thin covers includes a frame 10, a thin cover erecting device 30, a transverse pushing mechanism 20, a longitudinal pushing mechanism 40, a film wrapping device, a roller conveying mechanism 90, and a heat shaping mechanism 91. The thin cover erecting device 30, the transverse pushing mechanism 20, the longitudinal pushing mechanism 40, the film wrapping device, the roller conveying mechanism 90 and the heat shaping mechanism 91 are all arranged on the 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 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 by the thin cover roller, and after the processing is completed, the thin cover can be continuously driven to the position of the feeding slide 11 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, which specifically includes a supporting plate assembly, a guiding rod 263 and an elastic member 265 (not shown), 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 for the thin lids, a driving belt (not shown) is basically used to convey the thin lids laid flat to the port position of the material guiding path 21 in the previous process of the transverse material pushing mechanism 20, and a thin lid standing device 30 is provided at the port position of the material guiding path for the purpose of engaging with the driving belt and standing and keeping the thin lids 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.

Referring to fig. 2 and 3, 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, push the thin covers from the second position of the rack 10 to a third position of the rack 10 for film coating.

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 (15)

1. A simple film packaging apparatus for thin lids, comprising:

the rack (10) is provided with a first position, a second position and a third position, wherein the first position and the second position are respectively distributed at intervals along a first direction consistent with the transverse direction of the rack (10), and the second position and the third position are respectively distributed at intervals along a second direction consistent with the longitudinal direction of the rack (10);

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; it is characterized by also comprising:

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 the first position to the second position;

the longitudinal material pushing mechanism (40) is arranged at the second position of the rack (10), is provided with a thin cover clamping channel (45) which can be connected with the material guiding channel (21) and can be opened and closed up and down, and is used for receiving the thin covers which are pushed by the transverse material pushing mechanism (20) and stacked together, driving the stacked thin covers in the thin cover clamping channel (45) to be pushed from the second position of the rack (10) to the third position of the rack (10), and opening the thin cover clamping channel (45) to release the stacked thin covers;

the film wrapping device is arranged on the rack (10) and comprises a film conveying mechanism (50) and a thermal cutting mechanism (80), wherein the film conveying mechanism (50) can convey the film to the area of the advancing path of the longitudinal pushing mechanism (40), the film in the area is vertically arranged, and the film is pressed by the longitudinal pushing mechanism (40) in the advancing process of the longitudinal pushing mechanism (40) to release the film required by packaging; the hot cutting mechanism (80) is arranged at a third position of the rack (10) and is used for wrapping the film on the periphery of the stacked thin covers and cutting the redundant film after wrapping so as to form a thin cover roller wrapped with the film primarily;

the roller conveying mechanism (90) is arranged on the rack (10), runs in a roundabout mode in the second direction of the rack (10) and is used for conveying the thin cover roller wrapped with the thin film;

and the thermoplastic mechanism (91) is arranged on the rack (10) and is used for heating and shaping the films at the two ends of the thin cover roller and the films wrapped on the periphery of the thin cover roller.

2. The simple film packaging apparatus for thin lids as claimed in claim 1, wherein: the lateral 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) so as to drive the sliding rail (22) to rotate around the first rotating axis (220).

3. The simple film packaging apparatus for thin lids as claimed in claim 2, wherein: the pushing baffle unit (24) comprises a thin cover caching device, 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 simple film packaging apparatus for a thin cap according to claim 3, wherein: 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 simple film packaging apparatus for thin lids as claimed in claim 2, wherein: horizontal pushing equipment (20) still include along first direction interval set up first fixing base (27) and second fixing base (28) in the frame, the both ends of slide rail (22) correspond to rotate and connect in on first fixing base (27) and second fixing base (28).

6. The simple film packaging apparatus for thin lids as claimed in claim 1, wherein: the thin cover standing device (30) is arranged on the rack (10), and the thin cover standing device (30) comprises:

the magnetic wheel assembly comprises a magnetic wheel (31) arranged at the port position of the material guide channel (21), the axis of the magnetic wheel (31) is vertical to the length direction of the material guide channel (21), 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 (21) after being erected along with the rotation process of the magnetic wheel (31);

the thin cover holding assembly comprises a magnetic piece (32) arranged at the port position of the material guide channel (21) and is used for holding the thin covers transferred into the material guide channel (21) in a vertical stacking state.

7. The simple film packaging apparatus for a thin cap according to any one of claims 1 to 6, wherein: the longitudinal pushing mechanism (40) comprises:

the thin cover clamping device (41) comprises a supporting plate (42) capable of receiving thin covers stacked together, a pressure plate (43) of the supporting plate positioned above the supporting plate (42) and a third driving mechanism (48) for driving the pressure plate (43) to open and close relative to the supporting plate (42), wherein a thin cover clamping channel (45) is formed between the pressure plate (43) and the supporting plate (42) under the condition that the pressure plate (43) is closed relative to the supporting plate (42);

and the power output end of the second driving mechanism (46) is connected with the thin cover clamping device (41) and can drive the thin cover clamping device (41) to reciprocate along the second direction of the rack (10).

8. The simple film packaging apparatus for a thin lid as set forth in claim 7, wherein: the inner wall surface of the pressure plate (43) is provided with a brush (44) for pressing and holding the stacked thin covers so as to keep the stacked thin covers pushed into the thin cover clamping channel (45) by the transverse pushing mechanism (20) in a standing state.

9. The simple film packaging apparatus for a thin lid as set forth in claim 7, wherein: the power output end of the second driving mechanism (46) is provided with a connecting seat (47), the thin cover clamping device (41) is arranged on the connecting seat (47), the pressing plate (43) is connected to the connecting seat in a rotating mode, and the power output end of the third driving mechanism (48) is connected with the pressing plate (43) so as to drive the pressing plate (43) to rotate relative to the connecting seat.

10. The simple film packaging apparatus for a thin lid according to any one of claims 1 to 6, characterized in that: the thermal cut-off mechanism (80) includes:

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 is consistent with the first direction of the rack (10), the first movable frame (81) and the second movable frame (83) are slidably constrained on the rack (10) in a manner of being capable of being relatively close to or far away from each other in the vertical direction, 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 movable frame driving mechanism comprises a fourth driving mechanism (82) and a fifth driving mechanism (84), the power output end of the fourth driving mechanism (82) is connected with the first movable frame (81), and the fifth driving mechanism (84) is connected with the second movable frame (83).

11. The simple film packaging apparatus for a thin cap according to any one of claims 1 to 6, wherein: the film conveying mechanism (50) includes:

the first film releasing assembly comprises a first film fixing 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 film fixing roll (51) to rotate around the axis of the first film fixing roll to release the film;

and the second film releasing assembly is positioned above the first film releasing assembly and comprises a second film fixing 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 film fixing roll (54) to rotate around the axis of the second film fixing roll to release the film.

12. The simple film packaging apparatus for a thin lid as set forth in claim 11, wherein: the first film tensioning roller assembly (52) at least comprises 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 a first direction of the rack (10), two opposite surfaces of the two first brackets (71) are respectively provided with a first sliding groove (710) which is vertically arranged, two ends of the first tensioning roller (72) can be 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 a 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 brackets (71) and is used for identifying when the first tensioning roller (72) moves up to a set position and outputting a signal for starting a sixth driving mechanism (53) to a control system, to release the film wound on the first film fixed roll (51);

the second film tensioning roller assembly (55) at least comprises two second supports (74), a second tensioning roller (75) and a second proximity switch (76), the two second supports (74) are vertically arranged and are arranged in the first direction of the rack (10) at intervals, two opposite surfaces of the two second supports (74) are respectively provided with a second sliding chute (740) which is vertically arranged, two ends of the second tensioning roller (75) can be correspondingly arranged in the second sliding chutes (740) on the two second supports (74) in a vertically sliding manner, the second tensioning roller (75) tensions a film laid on the second film tensioning roller assembly (55) under the action of self gravity, and the second proximity switch (76) is arranged on the second supports (74) and is used for identifying when the second tensioning roller (75) moves up to a set position and outputting a signal for starting a seventh driving mechanism (56) to a control system, to release the film wound on the second fixed film roll (54).

13. The simple film packaging apparatus for a thin lid according to any one of claims 1 to 6, characterized in that: the roller conveying mechanism (90) comprises a rotating roller assembly capable of circularly rotating in the second direction of the rack (10), the rotating roller assembly comprises a plurality of rotating rollers (900) which are sequentially arranged in the second direction of the rack (10) at intervals, any two adjacent rotating rollers (900) form a positioning point for positioning and upwards supporting the thin cover roller, and each rotating roller (900) can also rotate around the axis of the rotating roller to drive the thin cover roller placed on the positioning point to rotate around the axis of the rotating roller.

14. The simple film packaging apparatus for a thin lid as set forth in claim 13, wherein: the thermoplastic forming mechanism (91) includes:

the port shaping device comprises a vertical frame (92), hot air injection heads (93) arranged at two ends of the vertical frame (92) and two eighth driving mechanisms (94) arranged on the vertical frame (92), wherein the vertical frame (92) is positioned above the roller conveying mechanism (90) and extends along the first direction of the rack (10), the two hot air injection heads (93) are arranged on the vertical frame (92) in a sliding mode and can move in a reciprocating mode along the length direction of the vertical frame (92), and 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 correspondingly approach port positions of a thin cover roller arranged on a rotating roller assembly, and films at two ends of the thin cover roller are heated and shaped;

peripheral moulding device, including being located the top of cylinder transport mechanism (90) and following hot gas injection frame (95) that the first direction of frame (10) extends, this hot gas injection frame (95) have with the unanimous bar gas outlet (950) of the length direction of hot gas injection frame (95), this bar gas outlet (950) set up down to can spray hot gas around self axis rotation in-process to the thin lid cylinder of placing on the locating point.

15. The simple film packaging apparatus for thin lids as claimed in claim 14, wherein: the hot air injection frame (95) is also arranged on the stand (92).

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