CN210212975U

CN210212975U - Cutting and sealing device of plastic film sealing machine

Info

Publication number: CN210212975U
Application number: CN201920927089.4U
Authority: CN
Inventors: Rongwen Lin; 林荣文; Jing Zou; 邹敬; Rongwu Lin; 林荣武
Original assignee: XIAMEN LANGUAN AUTOMATION TECHNOLOGY Co Ltd
Current assignee: XIAMEN LANGUAN AUTOMATION TECHNOLOGY Co Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-03-31
Anticipated expiration: 2029-06-19

Abstract

The utility model relates to a cutting and sealing device of a plastic film sealing machine, which comprises a main mounting plate, a transmission mechanism, a heating and cutting mechanism and a pressing mechanism, wherein a supporting shaft, a supporting column and a supporting plate are arranged at the bottom of the main mounting plate; the transmission mechanism comprises two symmetrically arranged product clamping and conveying units and two symmetrically arranged waste clamping and conveying units; each of the product clamping conveyor units comprises a first clamping conveyor belt, and each of the scrap clamping conveyor units comprises a second clamping conveyor belt; the pressing mechanism comprises a fixed pressing plate and a movable pressing plate; the movable pressing plate can be used for adjusting pressing force to adapt to different plastic films; the heating cutting-off mechanism comprises a heating cutter and a heating rod. The utility model discloses can realize sealing and cut disposable completion, do not have the condition that the waste material was torn, and can separately carry finished product and waste material, can improve work efficiency, reduce the cost of labor.

Description

Cutting and sealing device of plastic film sealing machine

Technical Field

The utility model belongs to the plastic packaging field, concretely relates to plastic film capper cut closing device.

Background

At present, the plastic bags are cut and sealed by adopting a hand-press sealing machine, the sealing machine needs to manually grasp the plastic bags filled with products by hands and lay the plastic bags on the sealing machine for sealing, and the sealing machine is pressed by the other hand to cut off the sealing of the plastic bags, so that the operation is complex, the labor intensity is high, and the requirement on the proficiency of operators is high, therefore, the working efficiency is low, the sealing consistency is poor, and the phenomena of infirm sealing and the like are easy to occur. In addition, the plastic bag waste material that downcuts drifts everywhere and is not convenient for collect, adsorbs on sealing good product very easily, when product packaging needs pyrocondensation, easily glues together, influences the quality of sealing of product to current capper is after long-time or frequent use, and its heating strip is damaged the fracture with the heat-insulating tape is easy, influences work efficiency and seals the quality, and the leading cause lies in that current sealing device that cuts is not perfect, has a great deal of structural defect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provide a plastic film capper cut closing device, can realize sealing and cut disposable completion, do not have the condition that the waste material was torn, and can separately carry finished product and waste material, can improve work efficiency, reduce the cost of labor. The utility model adopts the technical proposal that:

a cutting and sealing device of a plastic film sealing machine comprises a main mounting plate, a transmission mechanism, a heating and cutting mechanism and a pressing mechanism, wherein the transmission mechanism and the heating and cutting mechanism are mounted below the main mounting plate, and a support shaft, a support column and a support plate are mounted at the bottom of the main mounting plate; the transmission mechanism comprises two symmetrically arranged product clamping and conveying units and two symmetrically arranged waste clamping and conveying units; each of the product clamping conveyor units comprises a first clamping conveyor belt, and each of the scrap clamping conveyor units comprises a second clamping conveyor belt; the plastic film is moved to the sealing position through the conveying belt, so that the continuity and the stability are good, and the working efficiency is high.

The pressing mechanism comprises a fixed pressing plate and a movable pressing plate, and the first clamping conveying belt and the second clamping conveying belt are clamped between the fixed pressing plate and the movable pressing plate; the movable pressing plate can be used for adjusting pressing force to adapt to different plastic films; the heating cutting-off mechanism comprises a heating cutter and a heating rod, the heating rod is installed in the heating cutter, and the cutting edge of the heating cutter is located between the first clamping conveying belt and the second clamping conveying belt, so that sealing and cutting are completed at one time.

Preferably, the main mounting plate is provided with a transmission wheel shaft I and a transmission wheel shaft II, one end, protruding out of the upper portion of the main mounting plate, of the transmission wheel shaft I is provided with a transmission gear I and a transmission belt wheel, one end, protruding out of the upper portion of the main mounting plate, of the transmission wheel shaft II is provided with a transmission gear II, and the transmission gear I is meshed with the transmission gear II.

Preferably, the cutting and sealing device further comprises a sealing motor, an output shaft of the sealing motor is connected with a driving belt wheel, and the driving belt wheel is connected with the transmission belt wheel through a synchronous belt.

Preferably, each product clamping and conveying unit further comprises an extension arm, a first clamping belt wheel, an extension arm belt wheel and a first tensioning wheel, wherein the first clamping belt wheel is installed on the transmission wheel shaft I, the extension arm belt wheel is installed at the end part of the extension arm, and the first tensioning wheel is installed on the supporting shaft; the first clamping conveying belt is sleeved on the first clamping belt wheel, the extension arm belt wheel and the first tensioning wheel.

Preferably, each extension arm includes an extension plate and an end cap, the extension plate being connected to the main mounting plate by an "L" shaped connection plate.

Preferably, each waste clamping and conveying unit further comprises a second clamping belt wheel, a second tensioning wheel and a tail wheel, the second clamping belt wheel is mounted on the transmission wheel shaft I, the second tensioning wheel is mounted on the supporting shaft, the tail wheel is mounted on the tail wheel shaft, and the tail wheel shaft is mounted at the bottom of the main mounting plate; the second clamping conveyor belt is sleeved on the second clamping belt wheel, the second tensioning wheel and the tail wheel.

Preferably, the movable pressing plate is connected with the supporting column through a supporting rod, a pressing spring is further sleeved on the supporting rod, and the pressing spring is located between the movable pressing plate and the supporting column.

Preferably, the heating cutter is provided with a transverse heating hole in the middle, and the heating rod is installed in the heating hole.

Preferably, the heating cutter is made of metal materials, and the surface of the heating cutter is coated with a polytetrafluoroethylene coating.

Preferably, the movable press plate comprises two press bars with a gap left between the two press bars.

The utility model discloses relative prior art has following beneficial effect:

(1) the plastic film sealing machine of the utility model clamps the plastic film to move through the two conveying belts, moves the plastic film to the sealing position, and has good continuity and stability and high working efficiency; the product clamping and conveying units which are symmetrically arranged and the waste clamping and conveying units which are symmetrically arranged are compact in structure, and can realize automatic separation of products and waste without manual intervention.

(2) The cutting and sealing device can realize one-time completion of sealing and cutting, and the situation of tearing waste materials does not exist; the cutting and sealing device can be independently adjusted, and can adapt to sealing of products of various specifications and various working environments.

(3) The heating cutter is made of metal materials, and the surface of the heating cutter is coated with a Teflon coating, so that the heating cutter is stable and reliable, is not easy to stick a bag, can meet the working condition of long time and frequent use, and can be quickly disassembled and assembled to be convenient for cleaning.

Drawings

FIG. 1 is a perspective view of the plastic film sealing machine of the present invention;

FIG. 2 is a perspective view of the cutting and sealing device of the plastic film sealing machine of the present invention;

FIG. 3 is another perspective view of the cutting and sealing device of the plastic film sealing machine of the present invention;

FIG. 4 is another perspective view of the cutting and sealing device of the plastic film sealing machine of the present invention;

FIG. 5 is a front view of the cutting and sealing device of the plastic film sealing machine of the present invention;

FIG. 6 is a top view of the cutting and sealing device of the plastic film sealing machine of the present invention;

fig. 7 is a bottom view of the cutting and sealing device of the plastic film sealing machine of the present invention;

fig. 8 is a perspective view of the heating cutter of the plastic film sealing machine of the present invention;

fig. 9 is an exploded view of the heating cutter of the plastic film sealing machine of the present invention;

fig. 10 is a perspective view of the waste recycling bin of the plastic film sealing machine of the present invention;

fig. 11 is another perspective view of the waste recycling bin of the plastic film sealing machine of the present invention;

fig. 12 is a three-dimensional sectional view of the waste recycling bin of the plastic film sealing machine of the present invention;

fig. 13 is a rear view of the waste recycling bin of the plastic film sealing machine of the present invention;

FIG. 14 is a cross-sectional view taken along line D-D of FIG. 13;

fig. 15 is a structural view of a grooved guide wheel of the plastic film sealing machine of the present invention;

fig. 16 is a structural view of the vertical adjustment mechanism of the plastic film sealing machine of the present invention.

Wherein the names corresponding to the reference numerals are:

the device comprises a frame 1, a conveying platform 2, a platform driving motor 21, a conveyor belt 22 and a rotating shaft 23;

the cutting and sealing device 3, a main mounting plate 31, a transmission wheel shaft 311, a transmission wheel shaft II 312, a transmission gear I313, a transmission gear II 314, a support shaft 315, a support pillar 316, a support plate 317, a sealing motor 32, a driving belt wheel 321 and a transmission belt wheel 322;

a product clamping and conveying unit 33, a first clamping and conveying belt 331, an extension arm 332, a first clamping pulley 333, an extension arm pulley 334, a first tensioning wheel 335, an extension plate 3321, and an end cap 3322;

the waste clamping and conveying unit 34, a second clamping and conveying belt 341, a second clamping belt wheel 342, a second tension wheel 343, a tail wheel 344, a tail wheel shaft 345, a pressing mechanism 35, a fixed pressing plate 351, a movable pressing plate 352, a support 353 and a pressing spring 354;

the device comprises a heating cutting mechanism 36, a heating cutter 361, a heating rod 362, a cutter connecting plate 363, a temperature sensor 364, a blade 3611, a mounting hole 3612, a sensor hole 3613, a waste hose 37 and a waste interface 38;

a scrap collecting box 4, a box upper cover 41, a box main body 42, a collecting drive motor 43, a drive sprocket 431, a partition 44, a pumping hose 45, a grooved guide wheel 46, a first rotating roller 47, a second rotating roller 48, a collecting sprocket 461, a first sprocket 471, a first collecting gear 472, a second collecting gear 481, a synchronizing chain 49, a screen 441, and a toothed sealing plate 442;

the vertical adjusting mechanism 5, the bracket 51, the platform connecting plate 52, the cutting connecting plate 53, the adjusting support 54, the first adjusting screw 55, the second adjusting screw 56, the first hand wheel 57, the second hand wheel 58 and the product 6.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a what plastic film capper cut closing device, owing to cut the functional part that closing device is only the capper, in order to understand more easily the utility model discloses an use the scene, here, carry out technical scheme's explanation to whole plastic film capper, so that understand the utility model discloses a technical scheme, and understand on the whole the utility model discloses a technological effect.

As shown in fig. 1-3, a plastic film sealing machine comprises a frame 1, a conveying platform 2, a cutting and sealing device 3 and a waste recycling bin 4, wherein the conveying platform 2, the cutting and sealing device 3 and the waste recycling bin 4 are mounted on the frame, and the conveying platform 2 is located below the cutting and sealing device 3.

The conveying platform 2 comprises a platform driving motor 21, a conveyor belt 22 and a rotating shaft 23; the two ends of the conveyor belt 22 are sleeved on the rotating shaft 23, the output end of the platform driving motor 21 transmits the rotating power to the rotating shaft 23 through the synchronous belt and the synchronous belt wheel to drive the rotating shaft 23 to rotate, and the conveyor belt 22 sleeved on the rotating shaft 23 moves or rolls around the rotating shaft immediately.

The utility model discloses a cut closing device 3 and include main mounting panel 31, drive mechanism, heating shutdown mechanism 36, hold-down mechanism 35 and seal motor 32, drive mechanism and heating shutdown mechanism 36 install in main mounting panel 31 below, drive mechanism specifically includes that the product that two symmetries set up presss from both sides tight conveying unit 33 and the waste material that two symmetries set up presss from both sides tight conveying unit 34.

As shown in fig. 3-7, a transmission wheel shaft i 311 and a transmission wheel shaft ii 312 are mounted on the main mounting plate 31, a transmission gear i 313 and a transmission belt wheel 322 are mounted at one end of the transmission wheel shaft i 311 protruding out of the upper portion of the main mounting plate 31, a transmission gear ii 314 is mounted at one end of the transmission wheel shaft ii 312 protruding out of the upper portion of the main mounting plate 31, the transmission gear i 313 is meshed with the transmission gear ii 314, a driving belt wheel 321 is connected to an output shaft of the sealing motor 32, the driving belt wheel 321 is connected with the transmission belt wheel 322 through a synchronous belt, and the transmission belt wheel 322 is driven by the sealing motor 32 to rotate, so; further, as the transmission gear I313 is meshed with the transmission gear II 314, the transmission wheel shaft II 312 rotates along with the transmission gear I, and the transmission wheel shaft I311 and the transmission wheel shaft II 312 rotate in the same speed and opposite directions.

The bottom of the main mounting plate 31 is also mounted with a support shaft 315, a support post 316 and a support plate 317, and the symmetrical product gripping and conveying unit 33 and the waste gripping and conveying unit 34 are located below the main mounting plate 31. In actual production, a cover plate is further mounted on the main mounting plate 31 and used for protecting the sealing motor, the transmission gear I313, the transmission belt wheel 322 and other transmission mechanisms.

Each product clamping and conveying unit 33 comprises a first clamping and conveying belt 331, an extension arm 332, a first clamping pulley 333, an extension arm pulley 334 and a first tension wheel 335, wherein the first clamping pulley 333 is installed on a transmission wheel shaft I311, the extension arm pulley 334 is installed at the end part of the extension arm 332, and the first tension wheel 335 is installed on a support shaft 315; the first clamping conveyer 331 is fitted over the first clamping pulley 333, the extension arm 332, the extension arm pulley 334, and the first clamping wheel 335.

The number of the supporting shafts 315 may be two or more, and similarly, the number of the first tensioning wheels 335 may be two or more.

Each extension arm 332 includes an extension plate 3321 and an end cap 3322, the extension plate 3321 is connected to the main mounting plate 31 by an "L" shaped connection plate, the end cap 3322 is mounted on the extension plate 3321 to cover the extension arm pulley 334, and the first clamping conveyer 331 passes through the inner wall of the end cap 3322. The extension plate 3321 is further provided with a raised side plate on one side, and in the use process, the extension plate 3321 is symmetrically arranged, the plastic film is clamped between the two raised side plates and is further conveyed forwards under the movement of the first clamping conveyer belt 331, and the upper part of the plastic film is conveniently conveyed more smoothly, so that the heating sealing and cutting are facilitated.

Each scrap clamping and conveying unit 34 comprises a second clamping conveyor belt 341, a second clamping pulley 342, a second tensioning pulley 343 and a tail pulley 344, wherein the second clamping pulley 342 is mounted on the transmission wheel shaft i 311, specifically, the second clamping pulley 342 is mounted on the transmission wheel shaft i 311 side by side with the first clamping pulley 333, the second clamping pulley 342 is mounted between the first clamping pulley 333 and the main mounting plate 31, the second tensioning pulley 343 is mounted on the support shaft 315, the tail pulley 344 is mounted on the tail wheel shaft 345, and the tail wheel shaft 345 is mounted at the bottom of the main mounting plate 31; the second clamping conveyor belt 341 is fitted over the second clamping pulley 342, the second tension pulley 343, and the tail pulley 344.

The pressing mechanism 35 is used for pressing the two symmetrical first clamping conveyor belts 331 and the two symmetrical second clamping conveyor belts 341, the pressing mechanism 35 comprises a fixed pressing plate 351, a movable pressing plate 352 and a supporting rod 353, and the fixed pressing plate 351 and the movable pressing plate 352 are tightly attached to the first clamping conveyor belts 331 or the second clamping conveyor belts 341 and used for pressing the conveyed plastic films.

Specifically, the movable platen 352 includes two press bars with a gap left therebetween; one of the pressing strips is tightly attached to one of the first clamping conveyor belts 331, the other pressing strip is tightly attached to one of the second clamping conveyor belts 341, the fixed pressing plate 351 is installed at the bottom of the main installation plate 31, and correspondingly, the fixed pressing plate 351 is tightly attached to the other first clamping conveyor belt 331 and the other second clamping conveyor belt 341. It should be recalled here that the aforesaid transmission mechanism comprises in particular two symmetrically arranged product gripping and conveying units 33 and two symmetrically arranged scrap gripping and conveying units 34, i.e. two symmetrical first gripping and conveying belts 331 and two symmetrical second gripping and conveying belts 341.

The movable pressing plate 352 is connected with the supporting column 316 through a supporting rod 353, specifically, a through hole is formed in the supporting column 316, one end of the supporting rod 353 is fixedly connected with the pressing strip, the other end of the supporting rod 353 penetrates through the through hole of the supporting column 316 and then is connected with the adjusting nut, a pressing spring 354 is further sleeved on the supporting rod 353, and the pressing spring 354 is located between the pressing strip and the supporting column 316, or the pressing spring 354 is located between the movable pressing plate 352 and the supporting column 316. In this way, the tightness of each of the first clamping conveyer 331 and the second clamping conveyer 341 can be adjusted by adjusting the nuts.

As shown in fig. 8 to 9, the heating and cutting mechanism 36 is used to heat and cut the conveyed plastic film, so that the seal is thin and the cutter and the plastic are not torn or stuck.

The heating and cutting mechanism 36 comprises a heating cutter 361, a heating rod 362, a cutter connecting plate 363 and a temperature sensor 364, wherein a cutting edge 3611 is arranged on one side of the heating cutter 361, and two ends of the cutting edge 3611 are arc-shaped; the heating cutter 361 has a transverse heating hole in the middle, a heating rod 362 is installed in the heating hole, and the heating rod 362 is a resistor which can generate heat after being electrified.

Two mounting holes 3612 and a sensor hole 3613 are formed in one side, opposite to the cutting edge 3611, of the heating cutter 361, the heating cutter 361 is mounted on the cutter connecting plate 363 through two cutter bolts, a cutter spring is further sleeved on each cutter bolt, and the heating cutter 361 is automatically pressed on the fixed pressing plate 351 through the cutter spring; the temperature sensor 364 is installed in the sensor hole 3613; the support plate 317 of the main mounting plate 31 is provided with a screw, and the cutter connecting plate 363 is engaged with the screw of the support plate 317 through a butterfly nut, thereby being connected to the support plate 317. Thus, in the using process, the heating cutter 361, the heating rod 362 and the temperature sensor 364 are combined together, and are integrally installed on the cutter connecting plate 363 and then connected with the supporting plate 317, so that the heating cutting mechanism 36 can be conveniently disassembled and assembled. The heating cutter 361 is automatically pressed on the fixed pressure plate 351 by the cutter spring

The cutting edge 3611 of the heating cutter 361 is positioned between the first clamping conveyer 331 and the second clamping conveyer 341, that is, between two pressing bars of the movable pressing plate 352. The heating cutter 361 is made of metal material, and the surface is coated with polytetrafluoroethylene coating, so that the upper part of the film can be smoothly cut off without tearing and sticking when the film is heated, sealed and cut off.

The working process is as follows: after articles (such as fruits, toys, articles for daily use or the like) to be packaged are placed in the plastic film, the plastic film is placed on the conveying platform 2, the conveying belt 22 of the conveying platform 2 conveys the articles to the cutting and sealing device 3, the upper part of the plastic film is clamped between the first clamping conveying belts 331 at the peripheries of the two extension arms 332 with the help of manual work, and the plastic film can be released manually due to the clamping force; the plastic film continues to move under the clamping of the two first clamping conveyor belts 331 with opposite movement directions, after the plastic film moves to a certain distance, the upper portion of the plastic film is clamped by the first clamping conveyor belt 331 and the second clamping conveyor belt 341 at the same time, in the process of continuing to move forwards, the plastic film is in contact with the heating cutter 361, the plastic film is heated for heat sealing, meanwhile, the portion of the plastic film located at the upper portion of the heating cutter 361 is cut off, and the cut portion is the waste material which continues to move forwards.

The main mounting plate 31 is further provided with a waste hose 37, one end of the waste hose 37 is connected with a horn-shaped waste connector 38, the horn-shaped waste connector 38 is close to the tail end of the second clamping conveyor belt 341, and the other end of the waste hose 37 is connected with the waste recycling bin 4.

As shown in fig. 10 to 15, the waste recycling bin 4 includes a bin upper cover 41, a bin main body 42 and a recycling driving motor 43, the bin upper cover 41 can rotate and turn over relative to the bin main body 42 to open and close, a partition 44 is arranged in the bin upper cover 41, the partition 44 divides the bin upper cover 41 into two spaces, one space of the bin upper cover 41 is communicated with the waste hose 37, the other space of the bin upper cover 41 is communicated with one end of a pumping hose 45, the other end of the pumping hose 45 is connected with a suction pump (not shown), and the suction pump is installed in a closed box of the frame 1; a screen 441 is further installed at an upper portion of the space communicating with the pumping hose 45 to prevent waste from being sucked into the pumping hose 45.

A grooved guide wheel 46, a first rotating roller 47 and a second rotating roller 48 are arranged in the box main body 42, a recovery chain wheel 461 is installed at one end of the grooved guide wheel 46, a driving chain wheel 431 is installed at the output end of the recovery driving motor 43, a first chain wheel 471 and a first recovery gear 472 are installed at one end of the first rotating roller 47, a second recovery gear 481 is installed at one end of the second rotating roller 48, the first recovery gear 472 is meshed with the second recovery gear 481, a synchronous chain 49 is sleeved on the driving chain wheel 431, the recovery chain wheel 461 and the first chain wheel 471, after the recovery driving motor 43 rotates, the recovery chain wheel 461 and the first chain wheel 471 are driven to rotate through the synchronous chain 49, and meanwhile, the first recovery gear 472 coaxially connected with the first chain wheel 471 also rotates immediately and drives the second recovery gear 481 to rotate. It is thereby achieved that the grooved guide wheel 46 rotates in the same direction as the first rotating roller 47, while the grooved guide wheel 46 rotates in the opposite direction as the second rotating roller 48.

A toothed seal plate 442 is attached to the lower end of the partition plate 44, and in the attached state, teeth of the toothed seal plate 442 are fitted into grooves of the grooved guide 46 to block the space on both sides of the grooved guide 46, thereby preventing waste from entering the space of the tank cover 41 communicating with the pumping hose 45.

When the waste material extruding machine is installed, the grooved guide wheel 46, the first rotating roller 47 and the second rotating roller 48 are in clearance fit, the grooved guide wheel 46 and the second rotating roller 48 are in interference fit, and the first rotating roller 47 and the second rotating roller 48 are in interference fit, so that the waste material can be extruded well.

The working process is as follows: when the upper case cover 41 is closed, the suction pump sucks air from the inside of the waste recovery case 4 through the suction hose 45, negative pressure is formed inside the waste recovery case 4, that is, negative pressure is formed in the spaces on both sides of the partition 44, and the cut waste is sucked into the waste recovery case 4 through the trumpet-shaped waste port 38 and the waste hose 37; the waste material moves from the top down to the gap between the grooved guide roller 46 and the first rotating roller 47 on the side of the partition plate 44, and then falls out of the lower portion of the tank main body 42 after being rotationally pressed by the first rotating roller 47 and the second rotating roller 48, and can be collected by a collecting device.

As shown in fig. 16, the frame 1 is further provided with an up-down adjusting mechanism 5, the up-down adjusting mechanism 5 comprises a bracket 51, a platform connecting plate 52 and a cutting connecting plate 53, the platform connecting plate 52 is connected with the conveying platform 2, and the cutting connecting plate 53 is connected with the main mounting plate 31 of the cutting and sealing device 3; two adjusting support columns 54, a first adjusting screw rod 55 and a second adjusting screw rod 56 are mounted on the support 51, threads are arranged on the first adjusting screw rod 55 and the second adjusting screw rod 56, a first hand wheel 57 is arranged at one end of the first adjusting screw rod 55, a second hand wheel 58 is arranged at one end of the second adjusting screw rod 56, and the two adjusting support columns 54, the first adjusting screw rod 55 and the second adjusting screw rod 56 penetrate through the platform connecting plate 52 and the cutting connecting plate 53. The two adjusting struts 54 serve primarily to support the entire support 51 and to guide the platform web 52 and the cutting web 53 during the adjustment process.

The cutting connecting plate 53 is provided with a first rotary nut at a through hole through which the first adjusting screw 55 passes, and the first adjusting screw 55 and the cutting connecting plate 53 move up and down relatively by rotating the first hand wheel 57, so that the height of the cutting and sealing device 3 is adjusted.

The platform connecting plate 52 is provided with a second rotary nut at a through hole through which the second adjusting screw 56 passes, and the second adjusting screw 56 and the platform connecting plate 52 move up and down relatively by rotating the second hand wheel 58, so that the height of the conveying platform 2 is adjusted.

The up-down adjusting mechanism 5 is mainly used for adjusting the positions of the cutting and sealing device 3 and the conveying platform 2 so as to meet the sealing requirements of plastic films with different heights.

This technical scheme still includes control system for parts such as control each driving motor, sensor, because of not the utility model discloses an important innovation point, here is not being repeated. In addition, frame 1 below still is provided with four universal wheels, and is convenient the utility model discloses a plastic film capper removes.

The plastic film sealing machine of the utility model can be used for fruit packaging, toy packaging, articles for daily use or other articles, such as grapefruit; the following takes the machine package as an example, and the whole working process is as follows: the pomelo is put into an open plastic film to form a product 6 (see figures 1 and 16) to be processed, the pomelo is placed on a conveying platform 2 and automatically conveyed to a cutting and sealing device 3, the sealed product 6 continuously moves on the conveying platform 2, and the product 6 is conveyed to the next station by the conveying platform; the waste material of the cut plastic film is sucked by the waste material recovery box 4, pressed and discharged to a corresponding waste material collecting device such as a waste material collecting bag or the like.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The cutting and sealing device of the plastic film sealing machine is characterized by comprising a main mounting plate (31), a transmission mechanism, a heating and cutting mechanism (36) and a pressing mechanism (35), wherein the transmission mechanism and the heating and cutting mechanism (36) are mounted below the main mounting plate (31), and a support shaft (315), a support column (316) and a support plate (317) are mounted at the bottom of the main mounting plate (31);

the transmission mechanism comprises two symmetrically arranged product clamping and conveying units (33) and two symmetrically arranged waste clamping and conveying units (34); each of said product-gripping conveyor units (33) comprising a first gripping conveyor belt (331), each of said scrap-gripping conveyor units (34) comprising a second gripping conveyor belt (341);

the pressing mechanism (35) comprises a fixed pressing plate (351) and a movable pressing plate (352), and the first clamping conveying belt (331) and the second clamping conveying belt (341) are clamped between the fixed pressing plate (351) and the movable pressing plate (352);

the heating and cutting mechanism (36) comprises a heating cutter (361) and a heating rod (362), the heating rod (362) is installed in the heating cutter (361), and a cutting edge (3611) of the heating cutter (361) is located between the first clamping conveyor belt (331) and the second clamping conveyor belt (341).

2. The cutting and sealing device of the plastic film sealing machine as claimed in claim 1, wherein a transmission wheel shaft I (311) and a transmission wheel shaft II (312) are mounted on the main mounting plate (31), a transmission gear I (313) and a transmission belt wheel (322) are mounted at one end, protruding out of the upper portion of the main mounting plate (31), of the transmission wheel shaft I (311), a transmission gear II (314) is mounted at one end, protruding out of the upper portion of the main mounting plate (31), of the transmission wheel shaft II (312), and the transmission gear I (313) is meshed with the transmission gear II (314).

3. The cutting and sealing device of the plastic film sealing machine according to claim 2, further comprising a sealing motor (32), wherein an output shaft of the sealing motor (32) is connected with a driving pulley (321), and the driving pulley (321) is connected with the driving pulley (322) through a synchronous belt.

4. The cutting and sealing device of a plastic film sealing machine as claimed in claim 2, wherein each of said product clamping and conveying units (33) further comprises an extension arm (332), a first clamping pulley (333), an extension arm pulley (334) and a first clamping pulley (335), said first clamping pulley (333) being mounted on a driving wheel shaft I (311), the extension arm pulley (334) being mounted on an end portion of the extension arm (332), the first clamping pulley (335) being mounted on a supporting shaft (315); the first clamping conveyor belt (331) is sleeved on the first clamping belt wheel (333), the extension arm (332), the extension arm belt wheel (334) and the first clamping wheel (335).

5. The cutting and sealing device of a plastic film sealing machine as claimed in claim 4, characterized in that each of said extension arms (332) comprises an extension plate (3321) and an end cap (3322), said extension plate (3321) being connected to the main mounting plate (31) by means of an "L" -shaped connecting plate.

6. The cut-and-seal device of a plastic film capper according to claim 2, wherein each said scrap clamping and conveying unit (34) further comprises a second clamping pulley (342), a second tensioning pulley (343) and a tail pulley (344), said second clamping pulley (342) being mounted on a driving wheel shaft i (311), said second tensioning pulley (343) being mounted on a supporting shaft (315), said tail pulley (344) being mounted on a tail wheel shaft (345), and said tail wheel shaft (345) being mounted at the bottom of said main mounting plate (31); the second clamping conveyor belt (341) is fitted over the second clamping pulley (342), the second tension pulley (343), and the tail pulley (344).

7. The cutting and sealing device of the plastic film sealing machine according to claim 1, characterized in that the movable pressure plate (352) is connected with the supporting column (316) through a supporting rod (353), the supporting rod (353) is further sleeved with a pressing spring (354), and the pressing spring (354) is positioned between the movable pressure plate (352) and the supporting column (316).

8. The cutting-sealing apparatus of a plastic film sealer as claimed in claim 1, wherein a heating hole is formed in a central portion of the heating cutter (361), and a heating rod (362) is installed in the heating hole.

9. The cutting-sealing device of a plastic film sealing machine as claimed in any one of claims 1 to 8, characterized in that the heating cutter (361) is made of a metal material and coated with a polytetrafluoroethylene coating.

10. The cutting and sealing device of a plastic film sealing machine as claimed in any one of claims 1 to 8, characterized in that the movable press plate (352) comprises two press bars with a gap left between them.