阅读说明：本技术 一种袋装农药生产袋口密封装置 (Bag mouth sealing device for bagged pesticide production ) 是由 曾惠民 彭彩棋 关左生 于 2021-08-18 设计创作，主要内容包括：本发明涉及袋口密封技术领域,且公开了一种袋装农药生产袋口密封装置,包括壳体,壳体的内部开设有封装空腔,封装空腔下端的两侧活动安装有夹持机构,夹持机构的上方设置有热封机构,封装空腔的内部活动设置有清理机构。通过设置夹持机构和热封机构,当袋口的两端位于夹持块中间时,夹持块会在夹持弹簧的弹力作用下将袋口夹紧,当安装座在驱动杆和驱动齿轮的配合下向下移动时,会通过控制连杆使得触碰开关接通并对热封片进行加热,同时,输气活塞向下移动使得两个安装板相互靠近,使得袋口张开一定的角度,热封完成后,控制连杆上移使得触碰开关断开,从而达到了热封前自动对热封片进行加热,热封后自动停止加热的效果。(The invention relates to the technical field of bag opening sealing, and discloses a bag opening sealing device for bagged pesticide production. Through setting up fixture and heat-seal mechanism, when the both ends of sack are located the grip block in the middle of, the grip block can press from both sides the sack tightly under the spring action of centre gripping spring, when the mount pad is downstream under actuating lever and drive gear's cooperation, can make the touch switch-on and heat the heat-seal piece through the control connecting rod, and simultaneously, gas transmission piston downstream makes two mounting panels be close to each other, make the sack open certain angle, after the heat-seal was accomplished, the control connecting rod shifts up and makes the touch switch disconnection, thereby automatic heating the heat-seal piece before having reached the heat-seal, the effect of automatic shutdown heating after the heat-seal.)

1. The utility model provides a pesticide production sack sealing device in bags, includes casing (1), its characterized in that: the packaging machine is characterized in that a power supply (2) is installed at the upper end of the interior of the shell (1), a packaging cavity (3) is formed in the interior of the shell (1), clamping mechanisms (4) are movably installed on the left side and the right side of the lower end of the packaging cavity (3), a heat sealing mechanism (5) is arranged above the clamping mechanisms (4), and a cleaning mechanism (6) is movably arranged in the interior of the packaging cavity (3).

2. A pouch opening sealing device for bagged pesticide production as set forth in claim 1, characterized in that: fixture (4) are including centre gripping cavity (401), the inside sliding connection of centre gripping cavity (401) has mounting panel (402), centre gripping groove (403) have been seted up to the inside of mounting panel (402), the inside sliding connection of centre gripping groove (403) has grip block (404), be connected with between grip block (404) centre gripping spring (405), centre gripping cavity (401) are located the both sides of casing (1) lower extreme, closely laminate between the upper and lower both sides of mounting panel (402) and the inner wall of centre gripping cavity (401), grip block (404) are provided with two, the both ends of grip spring (405) respectively with two grip block (404) fixed connection.

3. A pouch opening sealing device for bagged pesticide production as set forth in claim 1, characterized in that: the heat sealing mechanism (5) comprises an installation cavity (501), a vertical sliding groove (502) is formed in the installation cavity (501), a driving gear (503) is connected to the vertical sliding groove (502) in a sliding manner, a driving rod (504) is connected to the surface of the driving gear (503) in a rotating manner, a mounting seat (505) is movably connected to one end, far away from the driving gear (503), of the driving rod (504), a heat sealing sheet (506) is detachably mounted on the lower surface of the mounting seat (505), an extrusion rod (507) is connected to the surface of the driving gear (503) in a rotating manner, a toothed rod (508) is fixedly mounted on the right side of an inner cavity of the vertical sliding groove (502), a driving air cavity (509) is formed in the lower end of the interior of the shell (1), an air transmission piston (510) is connected to the interior of the driving air cavity (509) in a sliding manner, a control connecting rod (511) is rotatably connected to the left side and the right side of the mounting seat (505), and a rotating wheel (512) is movably mounted at the lower end of the interior of the installation cavity (501), the left side of the bottom of an inner cavity of the mounting cavity (501) is fixedly provided with a touch switch (513), the mounting cavity (501) is positioned in the shell (1), one end of a squeezing rod (507) is rotatably connected with the surface of a driving gear (503), the other end of the squeezing rod (507) is rotatably connected with the surface of an air transmission piston (510), the outer surface shape of the driving gear (503) is matched with the outer surface shape of a toothed rod (508), one end of a control connecting rod (511) is movably connected with the surface of a mounting seat (505), and the other end of the control connecting rod (511) is movably connected with the surface of a rotating wheel (512).

4. A pouch opening sealing device for bagged pesticide production as set forth in claim 1, characterized in that: clearance mechanism (6) are including response cavity (601), the top swing joint of response cavity (601) inner chamber has installation piece (602), the bottom of installation piece (602) is through spring fixedly connected with press ball (603), the inner chamber bottom fixed mounting of response cavity (601) has press switch (604), slide rail (605) have been seted up to the below of response cavity (601), the inside movable mounting of slide rail (605) has drive pulley (606), the epaxial clearance blade (607) of having cup jointed of installation of drive pulley (606), slide rail (605) comprise horizontal segment and vertical two parts, drive pulley (606) are located the vertical part of slide rail (605) under the initial condition, the input of drive pulley (606) is connected on reciprocating motor.

5. A pouch opening sealing device for bagged pesticide production as set forth in claim 1, characterized in that: the driving air cavity (509) is communicated with the interior of the clamping cavity (401).

6. A pouch opening sealing device for bagged pesticide production as set forth in claim 1, characterized in that: the sensing cavity (601) is located inside the mounting seat (505).

Technical Field

The invention relates to the technical field of bag opening sealing, in particular to a bag opening sealing device for production of bagged pesticide.

Background

At present, bagged pesticides are more and more widely applied, when the bagged pesticides are used, a user dilutes the pesticides with known volume by water with a relative proportion, and the pesticides are uniformly sprayed on the surfaces of crops by spraying equipment such as a spray can after the pesticides are diluted to a certain concentration so as to achieve the purpose of protecting the crops.

In the prior art, the bag mouth is mostly sealed in a heat sealing mode, namely, the upper end of a bag filled with pesticide is clamped firstly, the pesticide is prevented from spilling out in the heat sealing process, then a heating device is used for heating the upper end of the bag to enable the upper end of the bag to be close to a melting state, finally two parallel clamping plates are used for clamping the bag mouth, the clamping plates are removed after the bag mouth is cooled and formed, however, when the bag mouth is sealed in the mode, the heating device is always in a working state, resources are wasted very much, in addition, the service life of the heating device can be greatly shortened when the bag mouth is always in a high-heat state, the processing cost is invisibly increased, moreover, the bag mouth can be melted when the bag mouth is heated, a small part of melted packaging bags are adhered to the surface of the heating device after the bag mouth is melted, and the heating device is still in the high-heat state, this can cause toxic gases to be emitted from the package that adheres to the heating device, sometimes even causing it to drip, and thus causing property damage.

Therefore, the invention provides a bag mouth sealing device for production of bagged pesticide, which has high automation degree, does not need manual participation in the packaging process, automatically stops heating after the bag mouth is heated by a heating device, thereby saving energy to a great extent, simultaneously avoiding the service life shortening caused by the continuous high temperature of the heating device, and in addition, immediately cleaning the surface of the heating device after one-time heating is finished, avoiding toxic gas from being generated after the heating is finished, and well solving the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a bag mouth sealing device for producing bagged pesticide, which has the advantages that the automation degree is high, the bag mouth sealing device does not need manual participation in the packaging process, heating can be automatically stopped after the bag mouth is heated by a heating device, so that the energy is saved to a great extent, meanwhile, the service life is shortened due to the continuous high temperature of the heating device is avoided, in addition, the surface of the heating device is immediately cleaned after one-time heating is finished, toxic gas is prevented from being generated after the heating is finished, and the problems that in the prior art, the energy is wasted due to the fact that the heating device is always in a working state in the processing process, and packaging bag residues are adhered to the surface of the heating device after the heating is finished are solved.

(II) technical scheme

In order to realize the purposes that the automation degree is high, the heating device can automatically stop heating after heating the bag opening, and the surface of the heating device is automatically cleaned after heating, the invention provides the following technical scheme: the utility model provides a pesticide production sack sealing device in bags, includes the casing, the power is installed to the inside upper end of casing, and the encapsulation cavity has been seted up to the inside of casing, and the equal movable mounting in left and right sides of encapsulation cavity lower extreme has fixture, and fixture's top is provided with heat-seal mechanism, and the inside activity of encapsulation cavity is provided with clearance mechanism.

Preferably, fixture includes the centre gripping cavity, the inside sliding connection of centre gripping cavity has the mounting panel, the centre gripping groove has been seted up to the inside of mounting panel, the inside sliding connection in centre gripping groove has the grip block, be connected with clamping spring between the grip block, the centre gripping cavity is located the both sides of casing lower extreme, closely laminate between the upper and lower both sides of mounting panel and the inner wall of centre gripping cavity, the grip block is provided with two, clamping spring's both ends respectively with two grip block fixed connection, before the encapsulation, at first place the aluminium foil part of pesticide wrapping bag both sides between two grip blocks, the grip block can be close to each other and press from both sides the wrapping bag tightly under clamping spring's effect afterwards.

Preferably, the heat sealing mechanism comprises an installation cavity, a vertical chute is arranged inside the installation cavity, a driving gear is connected inside the vertical chute in a sliding manner, the surface of the driving gear is connected with a driving rod in a rotating manner, one end, far away from the driving gear, of the driving rod is movably connected with an installation seat, a heat sealing sheet is detachably installed on the lower surface of the installation seat, the surface of the driving gear is connected with an extrusion rod in a rotating manner, a toothed bar is fixedly installed on the right side of an inner cavity of the vertical chute, a driving air cavity is arranged at the lower end inside the shell, an air delivery piston is connected inside the driving air cavity in a sliding manner, control connecting rods are respectively and rotatably connected on the left side and the right side of the installation seat, a rotating wheel is movably installed at the lower end inside the installation cavity, a touch switch is fixedly installed on the left side of the bottom of the inner cavity of the installation cavity, the installation cavity is positioned inside the shell, one end of the extrusion rod is rotatably connected with the surface of the driving gear, the other end of the extrusion rod is rotatably connected with the surface of the gas transmission piston, the outer surface shape of the driving gear is matched with the outer surface shape of the toothed bar, one end of the control connecting rod is movably connected with the surface of the mounting seat, the other end of the control connecting rod is movably connected with the surface of the rotating wheel, before heat sealing, the driving gear rotates to downwards move through the matching with the toothed bar, the driving gear downwards moves to downwards move the mounting seat through the driving rod, the mounting seat downwards moves to enable the rotating wheel to rotate through the control connecting rod, the rotating wheel rotates to enable the touch switch to be switched on, after the touch switch is switched on, the power supply can rapidly heat the heat sealing sheet, after heat sealing is completed, the driving gear reversely rotates to enable the mounting seat to upwards move, the mounting seat upwards moves to enable the rotating wheel to reversely rotate through the control connecting rod, and the rotating wheel reversely rotates to enable the rotating wheel to remove the contact of the touch switch, therefore, the heat sealing sheet is automatically heated before heat sealing, and the heat sealing sheet automatically stops heating after heat sealing is completed.

Preferably, the cleaning mechanism comprises an induction cavity, the top end of the inner cavity of the induction cavity is movably connected with an installation block, the bottom of the installation block is fixedly connected with a pressing ball through a spring, the bottom of the inner cavity of the induction cavity is fixedly provided with a pressing switch, a sliding rail is arranged below the induction cavity, a driving pulley is movably installed inside the sliding rail, a cleaning blade is sleeved on the installation shaft of the driving pulley, the sliding rail consists of a horizontal part and a vertical part, the driving pulley is located on the vertical part of the sliding rail in an initial state, the input end of the driving pulley is connected to a reciprocating motor, when the driving pulley is blocked in movement, the reciprocating motor can run reversely, the installation block can be driven to move downwards when the induction cavity moves upwards, the pressing ball can touch the pressing switch when the installation block moves downwards, the driving pulley can move along the sliding rail when the pressing switch is switched on, the cleaning blade can be driven to move in the moving process of the driving pulley, the cleaning blade moves to remove the residual packaging bag on the surface of the heat-seal sheet.

Preferably, the internal connection switch-on of drive air cavity and centre gripping cavity, when drive gear moves down, gas transmission piston can be in the effect of pinch bar downstream, gas transmission piston can make the inside gas entering centre gripping cavity's of drive air cavity when moving down inside, because closely laminate between mounting panel and the centre gripping cavity, therefore, the mounting panel can outwards move certain distance under the effect of gas pressure, at this moment, the mounting panel that is located casing lower extreme both sides can be close to each other, the in-process that the mounting panel is close to each other can make the wrapping bag open certain angle, thereby make the heat-seal piece after heating can be smoothly with the contact of wrapping bag sack.

Preferably, the response cavity is located the inside of mount pad, and the back is accomplished in the heat-seal, and the mount pad can make rebound under the effect of drive gear and actuating lever, and the mount pad upwards moves and can make the ball of pressing cause the extrusion to press the switch to make press the switch to be put through, can make drive pulley remove in the inside of slide rail after press the switch is put through, and the in-process that drive pulley removed can drive the removal blade and remove, and the in-process that the removal blade removed can clear up the surface of heat-seal piece.

(III) advantageous effects

Compared with the prior art, the invention provides a bag opening sealing device for production of bagged pesticide, which has the following beneficial effects:

1. the bag mouth sealing device for bagged pesticide production is characterized in that a clamping mechanism and a heat sealing mechanism are arranged, when two ends of a bag mouth of a pesticide packaging bag are positioned in the middle of a clamping block, the clamping block can clamp the packaging bag under the elastic action of a clamping spring, when a mounting seat moves downwards under the matching of a driving rod and a driving gear, a touch switch can be switched on through a control connecting rod, the heat sealing sheet can be heated after the touch switch is switched on, meanwhile, the driving gear moves downwards, an air conveying piston can be driven to move downwards through an extrusion rod, the two mounting plates can be close to each other due to the downward movement of the air conveying piston, the bag mouth of the packaging bag can be opened by a certain angle in the process of mutual approaching, when the mounting seat moves upwards under the matching of the driving rod and the driving gear, the touch switch can be switched off through the control connecting rod, and the heat sealing sheet can be automatically heated before heat sealing, and after heat sealing, the heating is automatically stopped.

2. This pesticide production sack sealing device in bags, through setting up clearance mechanism, after the heat-seal was accomplished, the mount pad can be at the effect of actuating lever rebound down, can make during the mount pad rebound and press ball and press the switch contact, press the switch and receive can the switch-on after the extrusion and make drive pulley remove along the guide direction of slide rail, the in-process that drive pulley removed can drive clearance blade synchronous motion, the in-process that the clearance blade removed can fully contact with the surface of heat-seal piece, thereby reached the heat-seal and accomplished the back, automatically, clear up the surface of heat-seal piece, prevent to remain the wrapping bag on heat-seal piece surface and give out harmful gas's effect owing to being heated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of a clamping mechanism according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1;

FIG. 4 is an enlarged view of the structure at B in FIG. 1;

FIG. 5 is an enlarged view of the structure at C in FIG. 1;

fig. 6 is an enlarged view of the structure at D in fig. 4.

In the figure: 1. a housing; 2. a power source; 3. packaging the cavity; 4. a clamping mechanism; 5. a heat sealing mechanism; 6. a cleaning mechanism; 401. a clamping cavity; 402. mounting a plate; 403. a clamping groove; 404. a clamping block; 405. a clamping spring; 501. installing a cavity; 502. a vertical chute; 503. a drive gear; 504. a drive rod; 505. a mounting seat; 506. a heat sealing sheet; 507. an extrusion stem; 508. a rack bar; 509. a drive air cavity; 510. an air delivery piston; 511. a control link; 512. a rotating wheel; 513. a touch switch; 601. an induction cavity; 602. mounting blocks; 603. pressing the ball; 604. a push switch; 605. a slide rail; 606. a drive pulley; 607. and (6) cleaning the blade.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-6, a bag mouth sealing device for bagged pesticide production comprises a casing 1, a power supply 2 is mounted at the upper end inside the casing 1, a packaging cavity 3 is formed inside the casing 1, clamping mechanisms 4 are movably mounted at the left side and the right side of the lower end of the packaging cavity 3, a heat sealing mechanism 5 is arranged above the clamping mechanisms 4, a cleaning mechanism 6 is movably arranged inside the packaging cavity 3, the clamping mechanisms 4 comprise clamping cavities 401, the clamping cavities 401 are located at the two sides of the lower end of the casing 1, a mounting plate 402 is slidably connected inside the clamping cavities 401, the upper side and the lower side of the mounting plate 402 are tightly attached to the inner wall of the clamping cavities 401, a clamping groove 403 is formed inside the mounting plate 402, clamping blocks 404 are slidably connected inside the clamping groove 403, two clamping blocks 404 are provided, a clamping spring 405 is connected between the clamping blocks 404, the two ends of the clamping spring 405 respectively extend into the two clamping blocks 404 and are fixedly connected with the clamping blocks 404, before packaging, firstly, the aluminum foil parts on two sides of the pesticide packaging bag are placed between two clamping blocks 404, then the clamping blocks 404 are close to each other under the action of a clamping spring 405 and clamp the packaging bag tightly, the heat sealing mechanism 5 comprises a mounting cavity 501, the mounting cavity 501 is positioned in the shell 1, a vertical chute 502 is formed in the mounting cavity 501, a driving gear 503 is connected in the vertical chute 502 in a sliding manner, a driving rod 504 is connected to the surface of the driving gear 503 in a rotating manner, a mounting seat 505 is movably connected to one end, far away from the driving gear 503, of the driving rod 504, a heat sealing sheet 506 is detachably mounted on the lower surface of the mounting seat 505, an extrusion rod 507 is connected to the surface of the driving gear 503 in a rotating manner, a toothed bar 508 is fixedly mounted on the right side of the inner cavity of the vertical chute 502, the outer surface shape of the driving gear 503 is matched with the outer surface shape of the toothed bar 508, and a driving air cavity 509 is formed at the lower end in the shell 1, an air transmission piston 510 is connected inside a driving air cavity 509 in a sliding manner, one end of an extrusion rod 507 is rotatably connected with the surface of a driving gear 503, the other end of the extrusion rod 507 is rotatably connected with the surface of the air transmission piston 510, the left side and the right side of an installation seat 505 are both rotatably connected with control connecting rods 511, a rotating wheel 512 is movably installed at the lower end inside the installation cavity 501, one end of each control connecting rod 511 is movably connected with the surface of the installation seat 505, the other end of each control connecting rod 511 is movably connected with the surface of the rotating wheel 512, a touch switch 513 is fixedly installed at the left side of the bottom of an inner cavity of the installation cavity 501, before heat sealing, the driving gear 503 rotates and moves downwards through matching with a toothed rod 508, the driving gear 503 moves downwards to enable the installation seat 505 to move downwards through the driving rod 504, the installation seat 505 moves downwards to enable the rotating wheel 512 to rotate through the control connecting rods 511, the rotating wheel 512 contacts and enables the touch switch 513 to be switched on, make power 2 carry out rapid heating to heat-seal piece 506 after touch switch 513 switches on, after the heat-seal is accomplished, drive gear 503 antiport makes mount pad 505 rebound, mount pad 505 rebound can make swiveling wheel 512 antiport through control connecting rod 511, swiveling wheel 512 antiport makes swiveling wheel 512 remove the contact to touch switch 513 to realize that automatic heating to heat-seal piece 506 before the heat-seal, heat-seal piece 506 self-stop heating after the heat-seal is accomplished.

The working principle is as follows:

firstly, the bagged pesticide which is subjected to quantitative filling is placed below the packaging cavity 3, then the aluminum foil parts at two ends of the bag opening are placed between the two clamping blocks 404, the two clamping blocks 404 are close to each other under the elastic action of the clamping spring 405, and the clamping blocks 404 clamp the bag opening of the packaging bag of the bagged pesticide in the process of mutual close.

Subsequently, the power supply 2 of the apparatus is manually turned on, at this time, the driving gear 503 rotates under the action of the power supply 2, the driving gear 503 rotates and moves vertically downward through the cooperation with the rack 508, the driving gear 503 moves downward to move the mounting seat 505 downward through the driving rod 504, the mounting seat 505 moves downward to rotate the rotating wheel 512 through the control link 511, the rotating wheel 512 contacts the touch switch 513 when rotating to a certain degree, then the touch switch 513 electrically connected through an electric wire is turned on, and the touch switch 513 is turned on and then cooperates with the power supply 2 to start heating the heat sealing sheet 506.

When the driving gear 503 continues to move downwards, the driving gear 503 can make the air transmission piston 510 move downwards through matching with the squeezing rod 507, the air transmission piston 510 moves downwards to enable the air inside the driving air cavity 509 to enter the clamping cavity 401, at the moment, the air pressure inside the clamping cavity 401 can be increased, subsequently, the mounting plate 402 can slide outwards under the pushing of air pressure, therefore, the mounting plates 402 located on two sides of the lower end of the shell 1 can be close to each other, the mounting plates 402 on two sides can enable the bag mouth of the pesticide packaging bag to open a certain angle when being close to each other, at the moment, the heat-sealing sheets 506 just can smoothly heat the bag mouth of the packaging bag.

After the time that the heating was predetermine, drive gear 503 counter rotation drives mount pad 505 rebound through actuating lever 504, drive gear 503 rebound back, drive gear 503 can make air transmission piston 510 rebound through cooperating with the pressure ram 507, air transmission piston 510 rebound can make the inside gas of centre gripping cavity 401 get back to the inside of drive air cavity 509, afterwards, the mounting panel 402 of casing 1 lower extreme both sides can be the motion of keeping away from each other under the effect of spring, the in-process that mounting panel 402 removed can make the wrapping bag mouth laminate each other, the sack of laminating each other can closely the bonding together at natural cooling's in-process.

When the driving gear 503 continues to move upwards, the mounting seat 505 moves upwards synchronously, when the mounting seat 505 moves upwards, the rotating wheel 512 rotates reversely through the control link 511, the rotating wheel 512 rotates reversely to release the pressing effect on the touch switch 513, then the electric touch switch 513 is turned off through the electric wire, and the heat sealing sheet 506 stops heating after the touch switch 513 is turned off.

Example two:

referring to fig. 1-6, a bag mouth sealing device for bagged pesticide production comprises a shell 1, a power supply 2 is mounted at the upper end inside the shell 1, a packaging cavity 3 is formed inside the shell 1, clamping mechanisms 4 are movably mounted at two sides of the lower end of the packaging cavity 3, a heat sealing mechanism 5 is arranged above the clamping mechanisms 4, a cleaning mechanism 6 is movably arranged inside the packaging cavity 3, the cleaning mechanism 6 comprises a sensing cavity 601, the top end of the inner cavity of the sensing cavity 601 is movably connected with a mounting block 602, the bottom of the mounting block 602 is fixedly connected with a pressing ball 603 through a spring, a pressing switch 604 is fixedly mounted at the bottom of the inner cavity of the sensing cavity 601, a sliding rail 605 is formed below the sensing cavity 601, a driving pulley 606 is movably mounted inside the sliding rail 605, a cleaning blade 607 is sleeved on the mounting shaft of the driving pulley 606, and the sliding rail 605 is composed of a horizontal part and a vertical part, in the initial state, the driving pulley 606 is located at the vertical part of the sliding rail 605, the input end of the driving pulley 606 is connected to the reciprocating motor, when the driving pulley 606 is blocked in motion, the reciprocating motor runs in the reverse direction, when the sensing cavity 601 moves upwards, the mounting block 602 movably connected with the sensing cavity 601 moves downwards, when the mounting block 602 moves downwards, the pressing ball 603 touches the pressing switch 604, when the pressing switch 604 is switched on, the driving pulley 606 moves along the sliding rail 605, the driving pulley 606 drives the cleaning blade 607 to move in the process of moving, the residual packaging bags on the surface of the heat sealing sheet 506 are removed in the process of moving the cleaning blade 607, the sensing cavity 601 is located inside the mounting seat 505, after heat sealing is completed, the mounting seat 505 moves upwards under the action of the driving gear 503 and the driving rod 504, and when the mounting seat 505 moves upwards, the pressing ball 604 extrudes the pressing switch 604, therefore, the push switch 604 is turned on, and the push switch 603 is turned on to move the driving pulley 606 inside the slide rail 605, so that the cleaning blade 607 is driven to move during the movement of the driving pulley 606, and the surface of the heat sealing sheet 506 is cleaned during the movement of the cleaning blade 607.

The working principle is as follows:

after the heat sealing sheet 506 stops heating, the driving gear 503 continues to move the mounting base 505 upwards through the driving rod 504, when the mounting base 505 moves upwards, the mounting block 602 movably connected with the top end of the inner cavity of the induction cavity 601 moves downwards relative to the mounting base 505, when the mounting block 602 moves downwards, the pressing ball 603 is in contact with the pressing switch 604, then the pressing switch 604 electrically connected through the electric wire is switched on, after the pressing switch 604 is switched on, the driving pulley 606 located at the vertical part of the sliding rail 605 rotates, and the driving pulley 606 is tightly attached to the sliding rail 605, so that the driving pulley 606 rotates and moves inside the sliding rail 605, the driving pulley 606 moves downwards from the vertical part of the sliding rail 605, and then the driving pulley 606 moves along the horizontal direction of the sliding rail 605 under the guiding action of the sliding rail 605.

When the driving pulley 606 moves to the end of the horizontal part of the slide rail 605, the driving pulley 606 is blocked by the slide rail 605, and after a short period of time, the reciprocating motor runs in reverse direction and makes the driving pulley 606 rotate in reverse direction, the driving pulley 606 rotates in reverse direction and continues to move along the guiding direction of the slide rail 605 and is reset, and the reset driving pulley 606 is located at the vertical part of the slide rail 605.

The driving pulley 606 moves inside the sliding rail 605 to drive the cleaning blade 607 to move synchronously, the cleaning blade 607 can be in full contact with the surface of the heat sealing sheet 506 in the moving process, and the cleaning blade 607 can remove the packaging bags remained on the surface of the heat sealing sheet 506 in the full contact process with the surface of the heat sealing sheet 506.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.