CN120057379A - Heat sealing device and smoke stack gas nursing and protecting method - Google Patents
Heat sealing device and smoke stack gas nursing and protecting method Download PDFInfo
- Publication number
- CN120057379A CN120057379A CN202510284186.6A CN202510284186A CN120057379A CN 120057379 A CN120057379 A CN 120057379A CN 202510284186 A CN202510284186 A CN 202510284186A CN 120057379 A CN120057379 A CN 120057379A
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- China
- Prior art keywords
- heat
- film
- heat sealing
- edges
- sealing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/16—Applying or generating heat or pressure or combinations thereof by rotary members
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/12—Steaming, curing, or flavouring tobacco
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Package Closures (AREA)
Abstract
The present disclosure provides a heat sealing device suitable for heat sealing edges of a top film and a bottom film together, comprising a raised pad, a heat sealing mechanism, and at least three sets of flattening mechanisms. The method comprises the steps of sealing and heat-sealing edges of a top film and a bottom film of the tobacco stack with the middle of the top film and the bottom film by using a heat-sealing device to form a film cover, and introducing a conditioning gas into the film cover to carry out gas conditioning and protection on the tobacco stack, so that the working efficiency is improved, the regulation and control on the heat-sealing temperature and the heat-sealing duration can be realized, and the heat-sealing quality is improved.
Description
Technical Field
The disclosure relates to the technical field of sheet tobacco curing, in particular to a heat sealing device and a tobacco stack gas curing and protecting method.
Background
The principle of the air conditioning maintenance is that under the normal temperature condition, a special sealing film is used for constructing a tobacco stack closed space with any size, and the storage atmosphere regulating agent put in the closed space is used for effectively regulating and controlling the oxygen concentration, the carbon dioxide concentration and the relative humidity in the closed space, so that the purposes of preventing and controlling harmful mildew, keeping the moisture of tobacco leaves relatively constant and effectively improving or keeping the alcoholization quality of the tobacco leaves are achieved. Therefore, the sealing film cover is one of key links for guaranteeing the air conditioning quality.
Disclosure of Invention
In view of the above, the present disclosure provides a heat sealing device and a smoke stack gas nursing method.
According to one aspect of the present disclosure, a heat sealing apparatus is provided, adapted to heat seal edges of a top film and a bottom film together, comprising a raised pad configured to horizontally support the edges of the top film and the bottom film in alignment, a heat sealing mechanism configured to clamp the edges of the top film and the bottom film in alignment and to seal the edges of the top film and the bottom film together while moving along the edges of the top film and the bottom film to form a film cover, and at least three sets of flattening mechanisms configured to be connected to corners of the top film and the bottom film and to move in a direction toward or away from centers of the top film and the bottom film, respectively, to flatten the top film and the bottom film.
According to an embodiment of the present disclosure, a heat sealing mechanism includes a base configured to move in a horizontal plane, a stand vertically mounted to the base, and two sets of heat sealing rollers vertically and rotatably connected to the same side of the stand, edges of a top film and a bottom film being sandwiched between the two sets of heat sealing rollers, each set of heat sealing rollers being configured to seal the edges of the top film and the bottom film together while moving along the edges of the top film and the bottom film.
According to an embodiment of the disclosure, each set of heat sealing rollers comprises a main heat sealing roller comprising a main connecting rod, a first end connecting bracket, and at least one set of main heat conducting cylinders rotatably sleeved on the main connecting rod and configured to heat edges of the top film and the bottom film by cooperation with a main heat conducting cylinder of another heat sealing roller.
According to the embodiment of the disclosure, each group of heat sealing rollers further comprises a secondary heat sealing roller, wherein the secondary heat sealing roller comprises a secondary connecting rod, a first end of the secondary connecting rod is detachably connected to a second end of the primary heat sealing roller, the second end of the secondary connecting rod is detachably connected with another secondary connecting rod or a positioning mechanism, and at least one group of secondary heat conducting cylinders are rotationally sleeved on the secondary connecting rod and are configured to heat edges of the top film and the bottom film through cooperation with the secondary heat conducting cylinders of the other group of heat sealing rollers.
According to an embodiment of the disclosure, each set of heat sealing rollers further comprises a heat insulation cylinder sleeved on the auxiliary connecting rod and located between the main heat conduction cylinder and the auxiliary heat conduction cylinder.
According to an embodiment of the present disclosure, the heat sealing mechanism further includes a rotating assembly rotatably mounted on the bracket and connected to the heat sealing rollers, the rotating assembly being configured to drive the heat sealing rollers to rotate in a horizontal plane relative to the bracket and/or to adjust a spacing between the two sets of heat sealing rollers.
According to an embodiment of the present disclosure, the rotating assembly includes an upright rotating column rotatably installed in a bracket through a rotation shaft, one end of a heat sealing roller is connected to the rotating column, an adjusting assembly provided on the rotating column and configured to drive at least one of the heat sealing rollers to vertically move to clamp or release edges of a top film and a bottom film, and a stopping assembly installed in the bracket and configured to lock or unlock the rotation shaft.
According to an embodiment of the present disclosure, a stopper assembly includes a link gear connected to a rotating shaft, a plurality of stopper grooves formed at circumferential side walls of the link gear, a stopper block provided with stopper teeth engaged with the stopper grooves, a first driving mechanism configured to drive the stopper block to move in a radial direction of the link gear such that the stopper teeth are inserted into the stopper grooves or are disengaged from the stopper grooves, and a locking mechanism configured to lock the stopper block to a bracket with the stopper teeth inserted into the stopper grooves to prevent the stopper teeth from being disengaged from the stopper grooves.
According to an embodiment of the disclosure, each set of flattening mechanisms comprises a flattening frame configured to move on a horizontal plane, wherein the upper surface of the flattening frame is provided with a sliding groove, and a flattening block. The device comprises a flattening frame, a sliding chute, a clamping assembly and a second driving mechanism, wherein the sliding chute is arranged in the sliding chute, the clamping assembly is arranged on the flattening frame and is configured to clamp the corner parts of the top film and the bottom film, and the second driving mechanism is configured to drive the flattening frame to move towards or away from the center of the top film and the bottom film.
According to an embodiment of another aspect of the present disclosure, there is provided a method of air conditioning and protecting a pack of cigarettes, comprising placing a base film on a raised pad, placing the pack of cigarettes on the base film, covering the top film over the pack of cigarettes, and aligning the edges of the top film and the base film, sealing and heat-sealing the edges of the top film and the base film together using a heat-sealing device as described above, comprising pulling corners of the top film and the base film with a flattening mechanism and moving in a direction closer to or farther from the centers of the top film and the base film to flatten the top film and the base film, sandwiching the edges of the top film and the base film by two sets of heat-sealing rollers of the heat-sealing mechanism, and driving the heat-sealing mechanism to move along the edges of the top film and the base film and melt-seal the edges of the top film to form a film cover, and introducing a conditioning gas into the film cover to air conditioning and protecting the pack of cigarettes.
When the heat sealing device disclosed by the disclosure is used for sealing edges, the corners of the top film and the bottom film are respectively stretched into different flattening mechanisms, the flattening mechanisms are started to flatten the corners, and then the heat sealing mechanisms are moved to enable the edges of the top film and the bottom film to be melted and sealed. The edge sealing mode only needs one worker to operate, so that the heat sealing temperature and the heat sealing time length can be regulated and controlled while the working efficiency is improved, and the heat sealing quality is improved.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments thereof with reference to the accompanying drawings in which:
FIG. 1 is a schematic perspective view of a heat sealing apparatus according to an embodiment of the present disclosure in operation;
FIG. 2 is a schematic perspective view of a heat sealing mechanism according to an embodiment of the present disclosure;
FIG. 3 is a partial cross-sectional view of a heat seal mechanism of an embodiment of the present disclosure;
FIG. 4 is an enlarged schematic view at A in FIG. 3;
FIG. 5 is a schematic perspective view of a stop assembly of an embodiment of the present disclosure;
FIG. 6 is a schematic perspective view of a flattening mechanism of an embodiment of the present disclosure.
Reference numerals illustrate:
1. Film cover, 2, heightening pad, 3, heat sealing mechanism, 4, flattening mechanism, 31, heat sealing frame, 311, base, 312, roller, 313, bracket, 314, rotating column, 315, rotating shaft, 316, mounting screw hole, 317, adjusting groove, 318, dovetail groove, 32, first heat sealing roller, 321, main heat sealing roller, 322, auxiliary heat sealing roller, 33, second heat sealing roller, 34, heat sealing space, 351, main connecting rod, 352, connecting stud, 353, connecting screw hole, 354, limiting ring, 355, positioning mechanism, 356, auxiliary connecting rod, 36, heat conducting cylinder, 361, leading heat conducting cylinder, 362, auxiliary heat conducting cylinder, 37, heat insulating cylinder, 371, rolling ball, 38, bearing, 39, rotating component, 41, mounting frame, 411, chute, 412, universal wheel, 42, adjusting block, slide block, 43, clamping component, 431, clamping block, 432, clamping cylinder 433, rubber pad, 44, second driving mechanism, 5, adjusting component, 51, 511, threaded part, motor part, 512, motor part, 52, gear wheel, 61, gear wheel, 64, locking mechanism, 65, locking mechanism, and locking mechanism.
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms, including technical and scientific terms, used herein have the meaning commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be construed to have meanings consistent with the context of the present specification and should not be construed in an idealized or overly formal manner.
Where a formulation similar to at least one of "A, B and C, etc." is used, such as "a system having at least one of A, B and C" shall be interpreted in the sense one having ordinary skill in the art would understand the formulation generally, for example, including but not limited to systems having a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc. Where a formulation similar to at least one of "A, B or C, etc." is used, such as "a system having at least one of A, B or C" shall be interpreted in the sense one having ordinary skill in the art would understand the formulation generally, for example, including but not limited to systems having a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.
It should be further noted that, the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the scope of the present disclosure. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in understanding the present disclosure.
In the related art, a film cover for the air-conditioning maintenance of a tobacco stack generally comprises a top film and a bottom film, wherein the bottom film needs to be paved on a cushion placed on the ground during molding, then the tobacco stack is placed in the middle of the bottom film, and then the top film is paved above the tobacco stack in a flat manner, and the edges of the top film and the bottom film are aligned. During processing, in order to reduce the risk of forming wrinkles of the film cover and improve the flatness and air tightness of the film cover, two workers are often required to level the two ends of the top film and the bottom film in a handheld mode, and then the other workers carry out heat sealing on the four sides of the top film and the bottom film by a handheld heat sealing machine, so that the edges of the top film and the bottom film are melted and sealed, and edge sealing processing is finished, so that a closed space is formed between the top film and the bottom film. However, the above edge sealing method needs to be operated and executed by three workers, which has high labor intensity and low working efficiency, and is not easy to control the temperature and the duration of heat sealing, and needs to be improved.
According to an embodiment of the present disclosure, as shown in fig. 1, a heat sealing device is provided, suitable for sealing the edges of a top film (not shown) and a bottom film (not shown) to form a film cover 1 for the controlled atmosphere maintenance of a stack. The heat sealing device comprises a heightening pad 2, a heat sealing mechanism 3 and at least three groups of flattening mechanisms 4. The booster pad 2 is placed on the floor and is configured to horizontally support the edge-aligned top and bottom films. The carrier film is placed on the booster cushion and the four corners of the carrier film extend beyond the booster cushion 2, respectively, a stack of cigarettes (not shown) is placed on the carrier film, a top film is covered over the stack of cigarettes, and the edges of the top film and the carrier film are aligned. The heat sealing mechanism 3 is configured to clamp and move the edges of the top and bottom films in edge alignment while sealing the edges of the top and bottom films together to form the film cover 1. At least three sets of flattening mechanisms 4 (four sets are shown in fig. 1) are configured to be connected to the corners of the top and bottom films, respectively, and to move in a direction toward or away from the centers of the top and bottom films, such that forces exerted by the three sets of flattening mechanisms 4 on the top and bottom films are balanced to flatten the top and bottom films. During edge sealing, corners of the edge are respectively stretched into the flattening mechanism 4, and after the flattening mechanism 4 is started, the top film and the bottom film are flattened and kept in a straightened state. And then the heat sealing mechanism 3 is started, so that the heat sealing mechanism 3 moves along the edge and is heated, the edge sealing action is completed, and the film cover 1 is formed.
Through the technical scheme, the edge sealing operation only needs one worker, the working efficiency is improved, the heat sealing temperature and the heat sealing time length can be regulated and controlled, and the heat sealing quality is improved.
According to an embodiment of the present disclosure, as shown in fig. 2, the heat sealing mechanism includes a base 311, a bracket 313, and two sets of heat sealing rollers. The base 311 is configured to move in a horizontal plane, the support 313 is vertically mounted to the base, and the two sets of heat-sealing rollers including a first heat-sealing roller 32 and a second heat-sealing roller 33 are vertically and rotatably connected to the same side of the support with an edge sandwiched between the two sets of heat-sealing rollers, each set of heat-sealing rollers being configured to seal the edges of the top and bottom films together while moving along the edge. In one embodiment, referring to fig. 2, the heat sealing mechanism 3 includes a heat sealing frame 31, a first heat sealing roller 32 is located on an upper side of a second heat sealing roller 33, and both are formed with a heat sealing space 34. A plurality of rollers 312 are arranged below the base 311, so that friction resistance of the heat sealing mechanism 3 when moving on the ground can be reduced, and labor consumption of workers when pushing the heat sealing mechanism 3 is reduced.
According to an embodiment of the present disclosure, each set of heat-sealing rolls includes a main heat-sealing roll 321, the main heat-sealing roll 321 includes a main connection rod 351 and at least one set of main heat-conducting cylinders 361, a first end of the main connection rod 351 is connected to the support 313, and the at least one set of main heat-conducting cylinders 361 is rotatably sleeved on the main connection rod 351 and is configured to heat edges of a top film and a bottom film by cooperating with the main heat-conducting cylinders of the other heat-sealing roll.
According to an embodiment of the present disclosure, each set of heat-sealing rollers further includes a sub-heat-sealing roller 322, the sub-heat-sealing roller 322 includes a sub-connection rod 356 and at least one set of sub-heat-conductive cylinders 362, the sub-connection rod 356 having a first end detachably connected to a second end of the main heat-sealing roller 321, the second end detachably connected to another sub-connection rod 356 or the positioning mechanism 355, and the at least one set of sub-heat-conductive cylinders 362 rotatably sleeved on the sub-connection rod 356 and configured to heat edges of the top film and the bottom film by cooperating with the sub-heat-conductive cylinders of the other set of heat-sealing rollers.
According to the embodiment of the disclosure, each group of heat sealing rollers further comprises a heat insulation cylinder 37 sleeved on the auxiliary connecting rod and positioned between the main heat conduction cylinder and the auxiliary heat conduction cylinder, and the heat insulation cylinder 37 is arranged between the main heat conduction cylinder 361 and the auxiliary heat conduction cylinder 362 or between adjacent auxiliary heat conduction cylinders 362.
In one embodiment, referring to fig. 3 and 4, the main connection rod 351 and the auxiliary connection rod 356 may include, for example, electric heating rods, each of which has a connection stud 352 at one side and a connection screw hole 353 at the other side,
The connection stud 352 on one of the main connection rods 351 can be screw-fitted with the connection screw hole 353 on the other connection rod 353, so that the sub heat-seal roller 322 is connected with the main heat-seal roller 321. The second end of the main heat-sealing roller 321 may be connected to the sub heat-sealing roller 322 or the positioning mechanism 355, and the second end of the sub heat-sealing roller 322 may be connected to the next sub heat-sealing roller or the positioning mechanism 355, and the width of the positioning mechanism 355 is greater than the inner diameter of the heat-conducting tube 36. The first end of the main connecting rod and the support 313 may further include a limiting ring 354 sleeved on the main connecting rod 351, and each heat conducting tube 36 and the heat insulating tube 37 are located between the limiting ring 354 and the positioning mechanism 355.
The outer diameter of the heat-insulating cylinder 37 is smaller than that of the heat-conducting cylinder 36, the heat-conducting cylinder 36 is made of a material capable of conducting heat, such as metal and ceramic lamps, and the heat-insulating cylinder 37 is made of a material capable of blocking heat flow transmission, such as glass fiber, asbestos and the like. After the electric heating rod is electrified, the electric heating rod generates heat and transmits the heat to the edges of the top film and the bottom film in the heat sealing space 34 along the heat conduction cylinder 36 so as to facilitate heat sealing processing.
Because the heat sealing mechanism 3 works, the heat sealing frame 31 needs to move, the heat conducting tube 36 rotates under the friction force between the heat conducting tube 36 and the edges of the top film and the bottom film, in order to improve the rotation smoothness of the heat conducting tube 36, a bearing 38 is arranged between the heat conducting tube 36 and the main connecting rod 351 and the auxiliary connecting rod 356, a plurality of rolling balls 371 are respectively arranged on two sides of the heat insulating tube 37 along the axial direction of the heat insulating tube, and the gravity center of the rolling balls 371 is located in the heat insulating tube 37. The bearing 38 can reduce the frictional resistance between the heat conductive cylinder 36 and the main and sub connecting rods 351 and 356, and the rolling ball 371 can reduce the frictional resistance between the heat conductive cylinder 36 and the heat insulating cylinder 37, so that the heat conductive cylinder 36 can smoothly rotate.
By the above technical scheme, when the heat sealing mechanism works, the heat conduction cylinder 36 can be contacted with the edges of the top film and the bottom film, and roll when travelling along with the heat sealing mechanism 3. After the power is on, heat can be transferred to the edges of the top film and the bottom film along the heat conduction barrel 36, so that the contact parts of the edges of the top film and the bottom film and the heat conduction barrel 36 are heated and melted, and the heat sealing edge is realized. The number of the heat conduction barrels 36 is multiple, so that when the heat sealing mechanism works, multiple sealing edges can be formed on the edges of the top film and the bottom film, and the sealing performance is good. The heat-insulating cylinder 37 is disposed between the adjacent heat-conducting cylinders 36, so that heat is not easily transferred to the film cover along the gaps between the adjacent heat-conducting cylinders 36, so as not to affect the formation of the plurality of sealed edges. The ball and the bearing can reduce the friction resistance when the heat conduction cylinder rotates, and are beneficial to improving the rotating smoothness of the heat conduction cylinder. The positioning mechanism 355 and the limiting ring 354 can prevent the heat conduction cylinder 36 from separating from the electric heating rod, and the integrity of the heat sealing roller is improved.
According to an embodiment of the present disclosure, as shown in fig. 2 and 3, the heat sealing mechanism further includes a rotation assembly 39 rotatably mounted on the bracket 313 and connected to the heat sealing rollers, the rotation assembly 39 being configured to drive the heat sealing rollers to rotate in a horizontal plane relative to the bracket and/or to adjust the spacing between the two sets of heat sealing rollers.
According to an embodiment of the present disclosure, the rotating assembly 39 includes an upstanding rotating post 314, an adjustment assembly 5, and a stop assembly 6. The rotating columns 314 are rotatably installed in the support 313 through a rotation shaft 315, one end of the heat sealing roller is connected to the rotating columns 314, the adjusting assembly 5 is provided on the rotating columns 314 and configured to drive at least one of the heat sealing rollers to vertically move to clamp or release edges of the top film and the bottom film, and the stopping assembly 6 is installed in the support 313 and configured to lock or unlock the rotation shaft 315.
Through above-mentioned technical scheme, the rotation post 314 can rotate for support 313 for the axial of heat sealing roller changes, in order to carry out banding to the marginal different positions of top film and carrier film, or through the rotatory mode of control rotation post 314, makes the heat sealing roller rotate in situ, in order to form arc banding at the edge, and the practicality is strong. After the position of the heat sealing roller is adjusted in place, the rotation shaft 315 is controlled by the stop component 6 to lock the rotation column 314, so that the heat sealing roller cannot rotate relative to the bracket, a continuous and stable sealing edge can be formed, and the sealing edge effect is improved.
In one embodiment, referring to fig. 3, the circumferential side wall of the rotating column 314 is provided with a mounting screw hole 316 and an adjusting groove 317 located at the upper side of the mounting screw hole 316, and the extending direction of the adjusting groove 317 is parallel to the distribution direction of the first heat sealing roller 32 and the second heat sealing roller 33, i.e., the vertical direction. The connecting stud 352 of the first heat-seal roller 32, which is close to the rotating column 314, is slidably disposed in the adjusting groove 317, and the connecting stud 352 of the second heat-seal roller 33, which is close to the rotating column 314, is screwed on the mounting screw hole 316, so that the first heat-seal roller 32 can vertically slide relative to the rotating column 314, and the second heat-seal roller 33 and the rotating column 314 are relatively fixed.
The rotating column 314 is provided with an adjusting assembly 5, the adjusting assembly 5 comprises an adjusting rod 51 and an adjusting motor 52 for driving the adjusting rod 51 to rotate circumferentially, and the adjusting motor 52 is preferably a servo motor with an output shaft capable of rotating forward and backward. The body of the adjusting motor 52 is mounted on a bottom plate fixed to the rotating column 314, an output shaft faces upward and is fixedly connected with the adjusting rod 51, and the adjusting rod 51 is rotatably arranged on a top plate fixed to the rotating column 314. The adjusting rod 51 includes a screw portion 511 and a polish rod portion 512 integrally formed under the screw portion 511, the screw portion 511 is screwed with the electric heating rod in the first heat seal roller 32, and the polish rod portion 512 is inserted into the second heat seal roller 33. When the adjusting motor 52 works, the adjusting rod 51 can synchronously rotate along with the output shaft of the adjusting motor 52, so that the first heat sealing roller 32 vertically moves relative to the second heat sealing roller 33, and the size of the heat sealing space 34 is changed to adapt to edge sealing of edges with different thicknesses.
Through the above technical scheme, when the adjusting motor 52 works, the adjusting rod 51 is controlled to rotate circumferentially, so that the heat sealing rollers move vertically, and the distance between the heat sealing rollers is changed, so that the heat sealing machine is suitable for heat sealing edges with different thicknesses or is convenient to move the edges into or out of the heat sealing space 34. One end of the heat sealing roller is in sliding fit with the adjusting groove 317, so that the heat sealing roller cannot synchronously rotate along with the adjusting rod 51 when the adjusting rod rotates, and the moving direction of the heat sealing roller is accurately controlled.
According to an embodiment of the present disclosure, the stop assembly 6 includes a linkage gear 61, a stop block 62, a first drive mechanism 64, and a locking mechanism 65. The link gear 61 is connected to the rotation shaft 315, a plurality of stopper grooves 611 are formed at a circumferential side wall of the link gear 61, stopper teeth (not shown in the drawing) engaged with the stopper grooves 611 are provided on the stopper block 62, the first driving mechanism 64 is configured to drive the stopper block 62 to move in a radial direction of the link gear 61 so that the stopper teeth are inserted into the stopper grooves 611 or are disengaged from the stopper grooves 611, the locking mechanism 65 is configured to lock the stopper block 62 to the bracket 313 with the stopper teeth inserted into the stopper grooves, to prevent the stopper teeth from being disengaged from the stopper grooves 611,
Through the above technical scheme, when the rotating column 314 needs to be locked, the stop block 62 is moved to the linkage gear 61 until the stop block 62 stretches into the adjacent stop groove 611, and then the locking mechanism 65 is screwed down, so that the locking mechanism 65 compresses the stop block 62 on the vertical plate, at this time, the stop block 62 is difficult to slide relative to the support 313 under the compressing action of the locking mechanism 65, and the linkage gear 61 is limited by the stop block 62 and cannot rotate, so that the rotating column 314 is locked, and the locking mechanism is simple and convenient to operate and good in locking effect.
In one embodiment, referring to fig. 3 and 5, the stop assembly 6 includes a linkage gear 61 fixed on a rotation shaft 315, a stop block 62 slidably coupled to a top of a support 313, an extension block 63 fixedly coupled to an upper side of the support 313, a first driving mechanism 64 abutting the stop block 62 and disposed between the extension block 63, and a locking mechanism 65 threadedly coupled to the stop block 62, the first driving mechanism 64 having a tendency to urge the stop block 62 toward the linkage gear 61. The first drive mechanism 64 is preferably a stop spring and the locking mechanism 65 is preferably a stop bolt.
The circumferential side wall of the linkage gear 61 is formed with a plurality of stop grooves 611, one end of the stop block 62 facing the linkage gear 61 is provided with a stop tooth which is pointed, and the stop tooth can extend into the stop groove 611, so that the stop block 62 can be in plug-in fit with the adjacent stop groove 611, and the stop block 62 is used for limiting the rotation of the linkage gear 61. After the stop block 62 extends into the adjacent stop groove 611, the locking mechanism 65 is screwed, and the head of the locking mechanism 65 presses the stop block 62 against the support 313, so as to lock the rotating column 314 and the heat sealing roller.
In order to precisely determine the moving direction of the stop block 62, a dovetail block 621 is fixed at the lower side of the stop block 62, a horizontally extending dovetail groove 318 is provided at the upper end surface of the support 313, the extending direction of the dovetail groove 318 is parallel to the extending direction of the first driving mechanism 64, and the dovetail block 621 is slidably disposed in the dovetail groove 318.
By adopting the technical scheme, on one hand, when the rotating column 341 is rotated, the first driving mechanism 64 drives the stop block 62 to automatically move to the linkage gear 61, so that the trouble of manually pushing the stop block 62 by a worker is eliminated, and on the other hand, when the locking mechanism 65 is vibrated due to vibration and other factors after the rotating column 314 is locked, the first driving mechanism 64 also has a certain pushing force on the stop block 62, so that the rotating column 314 is not easy to move randomly.
According to an embodiment of the present disclosure, each set of flattening mechanisms 4 includes a flattening frame 41, a flattening block 42, a clamping assembly 43, and a second driving mechanism 44. The flattening frame 41 is configured to move on a horizontal plane, the upper surface of the flattening frame is provided with a sliding groove 411, the flattening block 42 is slidably arranged in the sliding groove, the clamping assembly 43 is mounted on the flattening block 42 and is configured to clamp corners of the top film and the bottom film, and the second driving mechanism 44 is configured to drive the flattening block 42 to move on the flattening frame 41 in a direction approaching or separating from the centers of the top film and the bottom film.
In one embodiment, referring to fig. 6, the second driving mechanism 44 is preferably a flattening cylinder, the cylinder of which is mounted on the flattening frame 41, and a piston rod (not shown) is horizontally disposed toward the center of the booster pad 2, and the flattening block 2 is fixedly connected to the piston rod of the flattening cylinder. When the second driving mechanism 44 works, the flattening block 42 drives the clamping assembly 43 to move towards one side close to or far from the center of the heightening pad 2, so that the edges of the top film and the bottom film clamped by the clamping assembly 43 move along with the edges, and automatic flattening and straightening of the edges are realized. In order to improve the synchronization of the operations of the second driving mechanisms 44 in each of the flattening mechanisms 4, the second driving mechanisms 44 in each group of flattening mechanisms 4 should be controlled to operate synchronously by the same switch.
In order to improve the moving stability of the flattening block 42, a sliding block 421 is fixed at the lower side of the flattening block 42, a sliding groove 411 in sliding fit with the sliding block 421 is provided on the flattening frame 41, and the extending direction of the sliding groove 411 is parallel to the extending direction of the piston rod of the flattening cylinder.
To improve the moving smoothness of the flattening frame 41, a universal wheel 412 with a brake pad is provided at the bottom of the flattening frame to facilitate the worker to adjust the position of the flattening mechanism 4.
The clamping assembly 43 further comprises two clamping blocks 431 arranged oppositely and a clamping cylinder 432 for driving the two clamping blocks 431 to move oppositely or back to back, a cylinder barrel of the clamping cylinder 432 is arranged on the flattening block 42, and two piston rods are fixedly connected with the different clamping blocks 431 respectively. Rubber pads 433 are respectively fixed on the opposite side walls of the two clamping blocks 431, after the edges of the top film and the bottom film extend into the two clamping blocks 431, the two clamping blocks 431 are controlled to move oppositely by the clamping cylinder 432, so that the edges can be clamped by the clamping blocks 431 and synchronously move along with the clamping assembly 43 when the second driving mechanism works, and therefore the edges of the top film and the bottom film are flattened and straightened.
Through the technical scheme, when the clamping cylinder 432 works, the two clamping blocks 431 can synchronously move towards or away from each other, so that the edges of the top film and the bottom film are clamped or loosened, and the device is simple in structure and convenient to operate. The rubber pad 433 can increase the frictional force of grip block 431 and top film and carrier film edge for the difficult relative grip block 431 motion after the edge is pressed from both sides tightly, is favorable to improving the centre gripping effect of clamping assembly 43, improves stability.
According to an embodiment of another aspect of the present disclosure, there is provided a method of air conditioning and protecting a pack of cigarettes, comprising placing a base film on a raised pad, placing the pack of cigarettes on the base film, covering the top film over the pack of cigarettes, and aligning the edges of the top film and the base film, sealing and heat-sealing the edges of the top film and the base film together using a heat-sealing device as described above, comprising pulling corners of the top film and the base film with a flattening mechanism and moving in a direction closer to or farther from the centers of the top film and the base film to flatten the top film and the base film, sandwiching the edges of the top film and the base film by two sets of heat-sealing rollers of the heat-sealing mechanism, and driving the heat-sealing mechanism to move along the edges of the top film and the base film and melt-seal the edges of the top film to form a film cover, and introducing a conditioning gas into the film cover to air conditioning and protecting the pack of cigarettes.
In one embodiment, referring to fig. 1-6, when performing edge sealing, a worker manually stretches the corners of the edge into the adjacent clamping assemblies 43 in sequence, activates the clamping cylinders 432 to clamp the edge, and presses the switches for synchronously controlling the opening and closing of the second driving mechanisms 44, so that the second driving mechanisms 44 drive the flattening blocks 42 to move to a side far from the centers of the top film and the bottom film, and the top film and the bottom film are flattened and straightened.
After leveling, the first heat sealing roller 32 is driven to move upwards by the adjusting component 5, the heat sealing frame 31 is moved towards the edge so that the edge stretches into the heat sealing space 34, and then the first heat sealing roller 32 is driven to move downwards by the adjusting component 5 so that the first heat sealing roller 32 and the second heat sealing roller 33 are propped against the edge. And then the electric heating rod is electrified, and heat generated by the electric heating rod is transferred to the edge along the heat conduction cylinder 36 so as to heat-seal the edge. When in edge sealing, only one worker is required to push the heat sealing frame 31 to walk around the edges of the top film and the bottom film, so that the heat sealing mechanism 3 is used for heat sealing, the labor intensity is low, and the working efficiency is high.
The embodiments of the present disclosure are described above. These examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the embodiments cannot be used advantageously in combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be made by those skilled in the art without departing from the scope of the disclosure, and such alternatives and modifications are intended to fall within the scope of the disclosure.
Claims (10)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120440367A (en) * | 2025-07-10 | 2025-08-08 | 江阴市得宝新材料科技有限公司 | Masterbatch stacking and film covering device |
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| CN102845823A (en) * | 2011-12-28 | 2013-01-02 | 李翊玮 | Construction and regulation methods for tobacco stacking curtain sealed storing and mechanical regulating system |
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