CN114147973A

CN114147973A - Plastic film heat-sealing machine

Info

Publication number: CN114147973A
Application number: CN202111430557.5A
Authority: CN
Inventors: 陈武洋; 刘佳伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-03-08

Abstract

The invention relates to the technical field of heat sealing machines, in particular to a plastic film heat sealing machine, which comprises a top plate, wherein the bottom of the top plate is fixedly connected with two symmetrically arranged supporting plates, the opposite sides of the two supporting plates are fixedly connected with an operation table, a plastic film is placed on the top of the operation table, a movable plate is arranged below the top plate and is in sliding connection with the two supporting plates, an air cylinder is arranged at the center of the bottom of the top plate, the output end of the air cylinder is fixedly connected with the top of the movable plate, the air cylinder drives a bottom plate to move downwards through the movable plate so that a heat sealing knife performs heat sealing on the plastic film, when the air cylinder extends gradually, a clamping block can extrude a second spring to move out of a clamping opening and enter the clamping opening, at the moment, a first spring extends through a supporting plate to drive a push rod to move upwards, the bottom plate drives the heat sealing knife to be far away from the plastic film, and the purpose of separating immediately after heat sealing is achieved, the plastic film can be effectively prevented from being damaged after long-term heat sealing.

Description

Plastic film heat-sealing machine

Technical Field

The invention relates to the technical field of heat-sealing machines, in particular to a plastic film heat-sealing machine.

Background

The heat sealing machine is used for heating and closing the product package so as to achieve a sealed state. The heat sealing machine has a wide application range, and common uses include packaging sealing, material splicing, product printing and the like, and a food packaging machine are all a classification of the heat sealing machine.

A continuous plastic film heat sealing machine disclosed in the prior patent (publication number: CN109203576A) comprises a frame body and a fixed base, wherein an upper polar plate moves up and down by inflating and deflating a first pneumatic cylinder, and moves down to be matched with a lower polar plate and extrude the lower polar plate to carry out heat sealing processing on a plastic film;

in carrying out the above invention, the applicant has found that there are problems with the invention: the invention drives the heat seal and the separation after the heat seal by the cylinder in the using process, but the mode can not carry out the separation quickly after the heat seal, if the time and the temperature are not controlled well, the plastic film is damaged and is stuck on the upper polar plate, thereby reducing the quality of the plastic film and causing unnecessary loss.

Therefore, a plastic film heat sealing machine is provided.

Disclosure of Invention

The invention aims to provide a plastic film heat sealing machine, wherein a cylinder drives a bottom plate to move downwards through a movable plate so that a heat sealing cutter is used for heat sealing a plastic film, when the cylinder extends gradually, a clamping block can extrude a second spring to move out of a clamping opening and enter the clamping opening, at the moment, a first spring extends through a supporting plate to drive a push rod to move upwards, the bottom plate drives the heat sealing cutter to be away from the plastic film, the purpose of immediate separation after heat sealing is achieved, and the situation that the plastic film is damaged after long heat sealing time can be effectively avoided.

In order to achieve the purpose, the invention provides the following technical scheme:

a plastic film heat sealing machine comprises a top plate, wherein the bottom of the top plate is fixedly connected with two symmetrically arranged supporting plates, the opposite sides of the two supporting plates are fixedly connected with an operation table, a plastic film is placed at the top of the operation table, a movable plate is arranged below the top plate and is in sliding connection with the two supporting plates, an air cylinder is installed at the center of the bottom of the top plate, the output end of the air cylinder is fixedly connected with the top of the movable plate, the movable plate is in sliding connection with two symmetrically arranged push rods, the tops of the two push rods are fixedly connected with abutting plates, rod walls of the two push rods are sleeved with first springs, the two ends of the two first springs are fixedly connected with the adjacent abutting plates and the movable plate, the bottoms of the two push rods are fixedly connected with a bottom plate, and the center of the bottom plate is provided with a heat sealing cutter, and the opposite sides of the rod walls of the two push rods are provided with a buckling mechanism.

Preferably, the buckle mechanism comprises movable grooves, clamping blocks are slidably mounted in the two movable grooves, second springs are fixedly connected to opposite sides of the two clamping blocks, the other ends of the two second springs are fixedly connected with inner cavities of adjacent movable grooves, the movable plate is respectively provided with bayonets matched with the two clamping blocks, clamping grooves are arranged above the two bayonets, the two clamping grooves are arranged on the movable plate, the top of the inner cavity of each clamping groove close to one side of the cylinder is provided with a first contact block, telescopic switch and stop switch are installed in proper order to the top of roof, telescopic switch and stop switch all with cylinder electric connection is close to first contact piece one side the fixture block with first contact piece jointly with telescopic switch's shrinkage switch key electric connection, first spring is close to adjacently one side of backup pad is provided with trigger mechanism.

The output end of the cylinder extends to drive the movable plate to move downwards, so that the fixture block can drive the bottom plate to move downwards through the push rod to enable the heat seal cutter to contact and heat seal the plastic film, the cylinder can continue to extend in the heat seal contact process, the fixture block can extrude the second spring and move out of the bayonet under the downward pressure of the movable plate, when the fixture block contacts the bayonet, the second spring extends to drive the fixture block to be clamped into the bayonet under the acting force of the second spring, at the moment, under the acting force of the first spring, the first spring extends to drive the push rod to move upwards through the support plate, the bottom plate can drive the heat seal cutter to move upwards to be far away from the plastic film, the purpose of immediately separating after heat seal is achieved, the situation that the plastic film is damaged after heat seal for a long time can be effectively avoided, when the fixture block moves upwards to contact the first contact block, the opening of the shrinkage switch key of the telescopic switch can be controlled, at the moment, the cylinder can be controlled to drive the movable plate to move upwards.

Preferably, the trigger mechanism includes the montant, the montant with the top fixed connection of fly leaf, two the top homogeneous phase contact of support board has the support pole, two the support pole all with the bottom fixed connection of roof, the top of montant is with adjacent all install the second on the support pole and contact the piece, two the second contacts the piece and contacts, is close to montant one side support on the board set up with the opening of second contact piece looks adaptation, two the second contact piece jointly with stop switch electric connection, the bottom of bottom plate sets up the mechanism of paving.

When the movable plate moves upwards, the movable plate drives the second contact blocks on the lower side to move upwards through the vertical rods, and when the two second contact blocks are in contact, the stop switch can be realized to control the cylinder to stop, so that the purpose of automatic closing is achieved.

Preferably, the mechanism of paving includes the recess, two the recess is all seted up in the bottom of bottom plate, two the opposite side of recess all is provided with the cavity, two the cavity is all seted up in the bottom plate and adjacent the recess is linked together, two equal slidable mounting has the movable block in the cavity, two the third spring is all installed to the opposite side of movable block, two the other end of third spring all with adjacent the inner chamber fixed connection of cavity, two the equal swing joint in opposite side of movable block has first connecting rod, two the bottom of cavity all is seted up with adjacent the spout of first connecting rod looks adaptation, two the equal swing joint in bottom of first connecting rod has the second connecting rod, two the equal swing joint in other end of second connecting rod is adjacent the inner chamber of recess, adjacent first connecting rod with the bottom of second connecting rod all is provided with elasticity and presses and holds the mechanism.

When the bottom plate downstream, can realize driving first connecting rod through pressure and pass through in the spout shrinks to the recess to through movable block extrusion third spring, the second connecting rod also can deflect slowly and contract to the recess in simultaneously, thereby can realize that the second connecting rod deflects and drives the outside lateral movement of scraper blade through the connecting piece, reaches the purpose of laying flat plastic film, makes things convenient for follow-up heat seal.

Preferably, the elastic pressing and holding mechanism comprises a connecting piece, the connecting piece is connected with the first connecting rod and the bottom end of the second connecting rod in a movable mode, the scraper is arranged below the connecting piece, the fourth spring is arranged at the top end of the scraper, and the top end of the fourth spring is fixedly connected with the bottom end of the connecting piece.

The connecting piece can be driven to move downwards through the first connecting rod and the second connecting rod when the bottom plate moves downwards, when the scraper blade contacts the plastic film, the fourth spring can be extruded by the connecting piece when the connecting piece continues to move downwards, the purpose of elastic pressing is achieved, and the plastic film can be effectively prevented from being damaged.

Preferably, be close to montant one side be provided with two splint in the backup pad, the upside splint with adjacent backup pad fixed connection, downside splint with adjacent backup pad sliding connection, downside splint pass through the connecting rod with fly leaf fixed connection is close to splint one side seted up in the backup pad with the logical groove of connecting rod looks adaptation, two install the gasbag between the splint, gas blow pipe and breathing pipe are installed respectively to the end of blowing and the end of breathing in of gasbag, set up the cooling chamber in the operation panel, the gas blow pipe with the other end of breathing pipe all runs through the operation panel with the inside in cooling chamber is linked together, a plurality of through-holes have evenly been seted up at the top of operation panel.

When the movable plate moves downwards, the movable plate drives the lower side clamping plate to move downwards through the connecting rod, the air bag starts to suck air to restore the initial state under the action force of the air bag, the air bag can suck air into the cooling cavity through the air suction pipe, accordingly, the plastic film is adsorbed through the through holes, and the plastic film can be effectively prevented from deviating to influence the subsequent heat seal.

Preferably, keep away from montant one side install the cold water storage cistern in the backup pad, the top swing joint of cold water storage cistern has the screw thread lid, install the circulating pipe in the cooling chamber, the both ends of circulating pipe all run through the operation panel the backup pad with the cold water storage cistern, the circulating pipe with the inside of cold water storage cistern is linked together, install in the cold water storage cistern and push the mechanism.

Preferably, the pushing mechanism comprises a pressing plate, the pressing plate is slidably mounted in an inner cavity of the cold water tank, a U-shaped rod is fixedly connected to the top of the pressing plate, the U-shaped rod is slidably connected with the cold water tank, the other end of the U-shaped rod is fixedly connected with the top of the movable plate, a groove matched with the U-shaped rod is formed in the supporting plate and close to one side of the U-shaped rod, and a plurality of fins are uniformly mounted on the side wall of the cold water tank.

The cold water tank is in a sealed state due to the arrangement of the threaded cover, when the movable plate moves up and down, the movable plate drives the pressing plate to move up and down through the U-shaped rod, the pressing plate can extrude water in the cold water tank to circulate in the circulating pipe, and the inner cavity of the cooling cavity can be cooled.

When the movable plate moves upwards, the movable plate drives the lower side clamping plate to move upwards through the connecting rod and extrude the air bag, the air bag can blow air into the cooling cavity through the air blowing pipe, the air is discharged upwards through the through hole, the plastic film after heat sealing can be cooled, meanwhile, the plastic film can be blown up from the top of the operation table, and the plastic film can be taken out conveniently in the follow-up process.

Compared with the prior art, the invention has the beneficial effects that:

1. the movable plate is driven to move downwards by the extension of the output end of the air cylinder, the fixture block can drive the bottom plate to move downwards by the push rod so that the heat seal cutter is contacted with and heat seals the plastic film, the air cylinder can continue to extend in the heat seal contact process, the fixture block can extrude the second spring and move out of the bayonet under the downward pressure of the movable plate, when the fixture block is contacted with the bayonet, the second spring extends to drive the fixture block to be clamped into the bayonet under the acting force of the second spring, at the moment, under the acting force of the first spring, the first spring extends to drive the push rod to move upwards by the support plate, the bottom plate can drive the heat seal cutter to move upwards to be far away from the plastic film, the purpose of immediately separating after heat seal is achieved, the situation that the plastic film is damaged for a long time can be effectively avoided, when the fixture block moves upwards to be contacted with the first contact block, the opening of the shrinkage switch key of the telescopic switch can be controlled, at the moment, the cylinder can be controlled to drive the movable plate to move upwards.

2. Can drive the connecting piece downstream through first connecting rod and second connecting rod during bottom plate downstream, when the scraper blade contacts plastic film, the connecting piece continues downstream then can extrude the fourth spring, reach the purpose that elasticity pressure was held, can effectually prevent plastic film from being damaged, can realize driving first connecting rod through the spout shrink to the recess in through pressure, and extrude the third spring through the movable block, the second connecting rod also can deflect slowly to shrink to the recess in simultaneously, thereby can realize that the second connecting rod deflects and drive the outside lateral movement of scraper blade through the connecting piece, reach the purpose of laying flat plastic film, can effectual improvement heat-seal efficiency.

3. When the movable plate moves up and down, the movable plate drives the pressing plate to move up and down through the U-shaped rod, the pressing plate can extrude water in the cold water tank to circulate in the circulating pipe, the inner cavity of the cooling cavity can be cooled, when the movable plate moves down, the movable plate drives the lower side clamping plate to move down through the connecting rod, the air bag starts to suck air and recovers to an initial state under the action of the air bag, the air bag can suck air into the cooling cavity through the air suction pipe, so that the plastic film is adsorbed through each group of through holes, the plastic film can be effectively prevented from deviating, when the movable plate moves up, the movable plate drives the lower side clamping plate to move up through the connecting rod and extrude the air bag, the air bag can blow air into the cooling cavity through the air blowing pipe, the air is discharged upwards through the through holes, the heat-sealed plastic film can be cooled, and the purpose of cooling can be achieved, meanwhile, the plastic film can be blown up from the top of the operating table through the through holes by the air blowing pipes, so that the plastic film can be taken out conveniently in the follow-up process, and the purpose of taking down the plastic film is achieved.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the portion B of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure of the portion C in FIG. 1 according to the present invention;

FIG. 5 is a front view of a butt plate of the present invention;

fig. 6 is a top view of the present invention.

In the figure: 1. a top plate; 2. a support plate; 3. an operation table; 4. a plastic film; 5. a movable plate; 6. a first spring; 7. a resisting plate; 8. a push rod; 9. a support rod; 10. a movable groove; 11. a second spring; 12. a clamping block; 13. a bayonet; 14. a card slot; 15. a first contact block; 16. a vertical rod; 17. an opening; 18. a second contact block; 19. a cylinder; 20. a stop switch; 21. a telescopic switch; 22. a base plate; 23. a groove; 24. a cavity; 25. a movable block; 26. a third spring; 27. a first link; 28. a second link; 29. a connecting member; 30. a fourth spring; 31. a squeegee; 32. a connecting rod; 33. a splint; 34. an air bag; 35. an air blowing pipe; 36. an air intake duct; 37. a cooling chamber; 38. a through hole; 39. a cold water tank; 40. a circulation pipe; 41. pressing a plate; 42. a U-shaped rod; 43. a fin; 44. and (7) a heat seal cutter.

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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, a plastic film heat sealing machine comprises a top plate 1, two symmetrically arranged support plates 2 fixedly connected to the bottom of the top plate 1, an operation table 3 fixedly connected to the opposite sides of the two support plates 2, a plastic film 4 placed on the top of the operation table 3, a movable plate 5 arranged below the top plate 1, the movable plate 5 slidably connected to the two support plates 2, a cylinder 19 installed at the center of the bottom of the top plate 1, the output end of the cylinder 19 fixedly connected to the top of the movable plate 5, two symmetrically arranged push rods 8 slidably connected to the movable plate 5, two abutting plates 7 fixedly connected to the tops of the push rods 8, first springs 6 sleeved on the rod walls of the two push rods 8, two ends of each first spring 6 fixedly connected to the adjacent abutting plates 7 and the movable plate 5, a bottom plate 22 fixedly connected to the bottoms of the two push rods 8, a heat sealing knife 44 installed at the center of the bottom plate 22, the opposite sides of the rod walls of the two push rods 8 are provided with a buckling mechanism.

Referring to fig. 1 and 2, as an embodiment of the present invention, the locking mechanism includes movable grooves 10, two movable grooves 10 are slidably installed with a fixture block 12, opposite sides of the two fixture blocks 12 are fixedly connected with second springs 11, the other ends of the two second springs 11 are fixedly connected with an inner cavity of an adjacent movable groove 10, a movable plate 5 is respectively provided with a bayonet 13 adapted to the two fixture blocks 12, two bayonet slots 14 are respectively provided above the two bayonet slots 13, the two bayonet slots 14 are respectively provided on the movable plate 5, a first contact block 15 is installed at the top of the inner cavity of the bayonet slot 14 near one side of the cylinder 19, a telescopic switch 21 and a stop switch 20 are sequentially installed at the top of the top plate 1, the telescopic switch 21 and the stop switch 20 are both electrically connected to the cylinder 19, the fixture block 12 near one side of the first contact block 15 and the first contact block 15 are both electrically connected to a telescopic switch key of the telescopic switch 21, one side of the first spring 6 close to the adjacent support plate 2 is provided with a trigger mechanism.

The output end of the cylinder 19 extends to drive the movable plate 5 to move downwards, so that the fixture block 12 drives the bottom plate 22 to move downwards through the push rod 8, the heat seal cutter 44 contacts and heat seals the plastic film 4, the cylinder 19 extends continuously in the heat seal contact process, the fixture block 12 extrudes the second spring 11 and moves out of the bayonet 13 under the downward pressure of the movable plate 5, when the fixture block 12 contacts the clamping groove 14, the second spring 11 extends under the acting force of the second spring 11 to drive the fixture block 12 to be clamped into the clamping groove 14, at the moment, under the acting force of the first spring 6, the first spring 6 extends through the abutting plate 7 to drive the push rod 8 to move upwards, so that the bottom plate 22 drives the heat seal cutter 44 to move upwards to be far away from the plastic film 4, the purpose of immediate separation after heat seal is achieved, the situation that the plastic film 4 is effectively prevented from being damaged for a long time when the fixture block 12 moves upwards to contact the first contact block 15, the telescopic switch key of the telescopic switch 21 can be controlled to be opened, and at the moment, the cylinder 19 can be controlled to drive the movable plate 5 to move upwards.

As an embodiment of the present invention, referring to fig. 1 and 5, the triggering mechanism includes a vertical rod 16, the vertical rod 16 is fixedly connected to the top of the movable plate 5, the tops of the two abutting plates 7 are both in contact with the abutting rods 9, the two abutting rods 9 are both fixedly connected to the bottom of the top plate 1, the top of the vertical rod 16 and the adjacent abutting rod 9 are both provided with a second contact block 18, the two second contact blocks 18 are in contact, the abutting plate 7 near one side of the vertical rod 16 is provided with an opening 17 adapted to the second contact block 18, the two second contact blocks 18 are both electrically connected to the stop switch 20, and the bottom of the bottom plate 22 is provided with a leveling mechanism.

When the movable plate 5 moves upwards, the movable plate 5 drives the lower second contact blocks 18 to move upwards through the vertical rods 16, and when the two second contact blocks 18 are in contact, the stop switch 20 can be realized to control the stop of the air cylinder 19, so that the purpose of automatic closing is achieved.

As an embodiment of the present invention, referring to fig. 1 and 3, the leveling mechanism includes grooves 23, two grooves 23 are both opened at the bottom of the bottom plate 22, cavities 24 are both disposed at opposite sides of the two grooves 23, two cavities 24 are both opened in the bottom plate 22 and are communicated with adjacent grooves 23, movable blocks 25 are slidably mounted in the two cavities 24, third springs 26 are both mounted at opposite sides of the two movable blocks 25, the other ends of the two third springs 26 are both fixedly connected with inner cavities of adjacent cavities 24, first connecting rods 27 are both movably connected at opposite sides of the two movable blocks 25, sliding grooves adapted to the adjacent first connecting rods 27 are both disposed at the bottoms of the two cavities 24, second connecting rods 28 are both movably connected at the bottom ends of the two first connecting rods 27, the other ends of the two second connecting rods 28 are both movably mounted in inner cavities of adjacent grooves 23, and elastic pressing mechanisms are disposed at the bottom ends of the adjacent first connecting rods 27 and the second connecting rods 28.

When the bottom plate 22 moves downwards, the first connecting rod 27 can be driven to be contracted into the groove 23 through the sliding groove through pressure, the third spring 26 is extruded through the movable block 25, meanwhile, the second connecting rod 28 also deflects to be slowly contracted into the groove 23, and therefore the second connecting rod 28 can deflect to drive the scraper 31 to move outwards through the connecting piece 29, the purpose of flatly paving the plastic film 4 is achieved, and heat sealing is conveniently carried out subsequently.

Referring to fig. 1 and 4, as an embodiment of the present invention, the elastic pressing mechanism includes connecting members 29, two connecting members 29 are movably connected to the bottom ends of the adjacent first connecting rod 27 and the adjacent second connecting rod 28, scrapers 31 are disposed below the two connecting members 29, the top ends of the two scrapers 31 are respectively provided with a fourth spring 30, and the top ends of the two fourth springs 30 are respectively fixedly connected to the bottom of the adjacent connecting member 29.

When the bottom plate 22 moves downwards, the first connecting rod 27 and the second connecting rod 28 drive the connecting piece 29 to move downwards, when the scraper 31 contacts the plastic film 4, the connecting piece 29 continuously moves downwards to extrude the fourth spring 30, so that the elastic pressing purpose is achieved, and the plastic film 4 can be effectively prevented from being damaged.

Referring to fig. 1 and 6, as an embodiment of the present invention, two clamping plates 33 are disposed on the supporting plate 2 near the side of the vertical rod 16, the upper clamping plate 33 is fixedly connected to the adjacent supporting plate 2, the lower clamping plate 33 is slidably connected to the adjacent supporting plate 2, the lower clamping plate 33 is fixedly connected to the movable plate 5 through a connecting rod 32, a through groove adapted to the connecting rod 32 is formed in the supporting plate 2 near the side of the clamping plate 33, an air bag 34 is mounted between the two clamping plates 33, an air blowing pipe 35 and an air suction pipe 36 are respectively mounted at an air blowing end and an air suction end of the air bag 34, a cooling cavity 37 is formed in the console 3, the other ends of the air blowing pipe 35 and the air suction pipe 36 both penetrate through the console 3 and are communicated with the inside of the cooling cavity 37, and a plurality of through holes 38 are uniformly formed in the top of the console 3.

When the movable plate 5 moves downwards, the movable plate 5 drives the lower side clamping plate 33 to move downwards through the connecting rod 32, the air bag 34 starts to suck air to restore to the initial state under the action of the air bag 34, the air bag 34 can suck air into the cooling cavity 37 through the air suction pipe 36, and therefore the plastic film 4 is adsorbed through the through holes 38, and the plastic film 4 can be effectively prevented from deviating to influence subsequent heat sealing.

Preferably, a cold water tank 39 is mounted on the support plate 2 on the side far away from the vertical rod 16, a threaded cover is movably connected to the top of the cold water tank 39, a circulating pipe 40 is mounted in the cooling cavity 37, two ends of the circulating pipe 40 penetrate through the operating table 3, the support plate 2 and the cold water tank 39, the circulating pipe 40 is communicated with the inside of the cold water tank 39, and a pushing mechanism is mounted in the cold water tank 39.

Referring to fig. 1 and 6, the pushing mechanism includes a pressing plate 41, the pressing plate 41 is slidably mounted in an inner cavity of the cold water tank 39, a U-shaped rod 42 is fixedly connected to a top of the pressing plate 41, the U-shaped rod 42 is slidably connected to the cold water tank 39, the other end of the U-shaped rod 42 is fixedly connected to a top of the movable plate 5, a slot matched with the U-shaped rod 42 is formed in the supporting plate 2 on a side close to the U-shaped rod 42, and a plurality of fins 43 are uniformly mounted on a side wall of the cold water tank 39.

The cold water tank 39 is sealed through the arrangement of the threaded cover, when the movable plate 5 moves up and down, the movable plate 5 drives the pressing plate 41 to move up and down through the U-shaped rod 42, water in the cold water tank 39 can be extruded by the pressing plate 41 to the circulating pipe 40 to circulate, and the inner cavity of the cooling cavity 37 can be cooled.

When the movable plate 5 moves upwards, the movable plate 5 drives the lower side clamping plate 33 to move upwards through the connecting rod 32 and extrude the air bag 34, the air bag 34 can blow air into the cooling cavity 37 through the air blowing pipe 35, the air is discharged upwards through the through hole 38, the plastic film 4 after heat sealing can be cooled, meanwhile, the plastic film 4 can be blown up from the top of the operation table 3, and the plastic film 4 can be taken out conveniently.

The working principle is as follows: firstly, a plastic film 4 is placed on the top of an operation table 3, then the opening of an air cylinder 19 is controlled through an expansion key of a telescopic switch 21, the output end of the air cylinder 19 extends to drive a movable plate 5 to move downwards, the movable plate 5 drives a lower side clamping plate 33 to move downwards through a connecting rod 32, under the action of an air bag 34, the air bag 34 starts to suck air to a cooling cavity 37 through an air suction pipe 36 to suck air into the cooling cavity 37, so that the plastic film 4 is adsorbed through groups of through holes 38, meanwhile, the movable plate 5 drives a push rod 8 to move downwards through a clamping block 12, the push rod 8 drives a heat sealing knife 44 to move downwards through a bottom plate 22, when the scraper 31 contacts the plastic film 4, a connecting piece 29 extrudes a fourth spring 30 to press the scraper 31 to hold the plastic film 4, and when the bottom plate 22 continues to move downwards, the first connecting rod 27 can be driven to shrink into a groove 23 through a sliding chute through pressure, the third spring 26 is extruded by the movable block 25, and simultaneously the second connecting rod 28 deflects and slowly contracts into the groove 23, so that the second connecting rod 28 deflects to drive the scraper 31 to move outwards through the connecting piece 29, the plastic film 4 can be flattened, the output end of the air cylinder 19 continues to extend to drive the movable plate 5 to move downwards, the fixture block 12 can drive the bottom plate 22 to move downwards through the push rod 8, so that the heat sealing knife 44 contacts and heat seals the plastic film 4, the air cylinder 19 continues to extend in the heat sealing contact process, the fixture block 12 can extrude the second spring 11 and move out of the bayonet 13 under the downward pressure of the movable plate 5, when the fixture block 12 contacts the bayonet 14, the second spring 11 extends under the acting force of the second spring 11 to drive the fixture block 12 to be clamped into the bayonet 14, at this time, under the acting force of the first spring 6, the first spring 6 extends through the abutting plate 7 to drive the push rod 8 to move upwards, the bottom plate 22 can drive the heat sealing knife 44 to move upwards to be far away from the plastic film 4, the purpose of immediately separating after heat sealing is achieved, when the clamping block 12 moves upwards to contact with the first contact block 15, the shrinkage switch key of the telescopic switch 21 can be controlled to be opened, at the moment, the cylinder 19 can be controlled to drive the movable plate 5 to move upwards, when the abutting plate 7 contacts with the abutting rod 9, the abutting plate 7 can extrude the first spring 6 and drive the push rod 8 to move downwards, the clamping block 12 can extrude the second spring 11 to be clamped into the bayonet 13 again, meanwhile, the movable plate 5 drives the lower side second contact block 18 to move upwards through the vertical rod 16, and when the two second contact blocks 18 are contacted, the stop switch 20 can be achieved to control the cylinder 19 to stop working.

When the movable plate 5 moves up and down, the movable plate 5 drives the pressing plate 41 to move up and down through the U-shaped rod 42, the pressing plate 41 can extrude water in the cold water tank 39 into the circulating pipe 40 for circulation, the inner cavity of the cooling cavity 37 can be cooled, when the movable plate 5 moves up, the movable plate 5 drives the lower side clamping plate 33 to move up through the connecting rod 32 and extrude the air bag 34, the air bag 34 can blow into the cooling cavity 37 through the air blowing pipe 35, the air is discharged upwards through the through hole 38, the heat-sealed plastic film 4 can be cooled, meanwhile, the movable plate 5 moves up to drive the bottom plate 22 to move upwards, under the acting force of the third spring 26, the third spring 26 extends through the movable block 25 to push the first connecting rod 27 to return to the initial position, in the process of moving up, the scraping plate 31 can press the plastic film 4 to separate from the heat-sealing knife 44, when the scraping plate 31 moves up to move to the upper side of the plastic film 4, meanwhile, the blowing pipe 35 blows the plastic film 4 from the top of the operation table 3 through the through hole 38, so that the plastic film 4 can be taken out later.

The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.

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.

Claims

1. A plastic film heat-sealing machine, includes roof (1), its characterized in that: the bottom of the top plate (1) is fixedly connected with two symmetrically arranged supporting plates (2), the opposite sides of the two supporting plates (2) are fixedly connected with an operation table (3), a plastic film (4) is placed at the top of the operation table (3), a movable plate (5) is arranged below the top plate (1), the movable plate (5) is in sliding connection with the two supporting plates (2), an air cylinder (19) is installed at the center of the bottom of the top plate (1), the output end of the air cylinder (19) is fixedly connected with the top of the movable plate (5), the movable plate (5) is in sliding connection with two symmetrically arranged push rods (8), the tops of the two push rods (8) are both fixedly connected with abutting plates (7), the rod walls of the two push rods (8) are both sleeved with first springs (6), the two ends of the two first springs (6) are both adjacent to the abutting plates (7) and the movable plate (5), the bottom of each of the two push rods (8) is fixedly connected with a bottom plate (22), the center of the bottom plate (22) is provided with a heat sealing cutter (44), and the opposite sides of the rod walls of the two push rods (8) are provided with a buckling mechanism.

2. A plastic film heat-sealing machine as claimed in claim 1, wherein: the buckling mechanism comprises movable grooves (10), clamping blocks (12) are arranged in the two movable grooves (10) in a sliding mode, second springs (11) are fixedly connected to opposite sides of the two clamping blocks (12), the other ends of the two second springs (11) are fixedly connected with inner cavities of the adjacent movable grooves (10), bayonets (13) matched with the two clamping blocks (12) are respectively formed in the movable plate (5), clamping grooves (14) are respectively formed above the two bayonets (13), the two clamping grooves (14) are respectively formed in the movable plate (5), a first contact block (15) is arranged at the top of an inner cavity of each clamping groove (14) close to one side of the air cylinder (19), a telescopic switch (21) and a stop switch (20) are sequentially arranged at the top of the top plate (1), and the telescopic switch (21) and the stop switch (20) are electrically connected with the air cylinder (19), the fixture block (12) and the first contact block (15) which are close to one side of the first contact block (15) are electrically connected with a telescopic switch key of the telescopic switch (21) together, and a trigger mechanism is arranged on one side, close to the adjacent support plate (2), of the first spring (6).

3. A plastic film heat-sealing machine as claimed in claim 2, wherein: trigger mechanism includes montant (16), montant (16) with the top fixed connection of fly leaf (5), two the top homogeneous phase contact of resisting board (7) has to support pole (9), two support pole (9) all with the bottom fixed connection of roof (1), the top and the adjacent of montant (16) support and all install second contact piece (18) on pole (9), two second contact piece (18) contact, are close to montant (16) one side support board (7) on seted up with opening (17) of second contact piece (18) looks adaptation, two second contact piece (18) common with stop switch (20) electric connection, the bottom of bottom plate (22) sets up the mechanism of paving.

4. A plastic film heat-sealing machine as claimed in claim 3, wherein: the paving mechanism comprises grooves (23), wherein the two grooves (23) are all arranged at the bottom of the bottom plate (22), two cavities (24) are arranged on opposite sides of the grooves (23) and are communicated with each other, the cavities (24) are arranged in the bottom plate (22) and are adjacent to each other, the grooves (23) are communicated with each other and are internally provided with movable blocks (25) in a sliding manner, the opposite sides of the movable blocks (25) are provided with third springs (26), the other ends of the third springs (26) are fixedly connected with the inner cavity of the cavity (24), the opposite sides of the movable blocks (25) are movably connected with first connecting rods (27), the bottoms of the cavities (24) are respectively provided with chutes matched with the adjacent first connecting rods (27), and the bottom ends of the first connecting rods (27) are movably connected with second connecting rods (28), the other ends of the two second connecting rods (28) are movably arranged in the inner cavities of the adjacent grooves (23), and elastic pressing mechanisms are arranged at the bottom ends of the adjacent first connecting rods (27) and the adjacent second connecting rods (28).

5. A plastic film heat-sealing machine as claimed in claim 4, wherein: elasticity is pressed and is held mechanism includes connecting piece (29), two connecting piece (29) all with adjacent first connecting rod (27) with the bottom swing joint of second connecting rod (28), two the below of connecting piece (29) all is provided with scraper blade (31), two fourth spring (30), two are all installed on the top of scraper blade (31) the top of fourth spring (30) all with adjacent the bottom fixed connection of connecting piece (29).

6. A plastic film heat-sealing machine as claimed in claim 3, wherein: be close to montant (16) one side be provided with two splint (33) on backup pad (2), the upside splint (33) with adjacent backup pad (2) fixed connection, the downside splint (33) with adjacent backup pad (2) sliding connection, the downside splint (33) through connecting rod (32) with fly leaf (5) fixed connection, be close to splint (33) one side the backup pad (2) is seted up with connecting rod (32) looks adaptation's logical groove, two install gasbag (34) between splint (33), blowing end and the end of breathing in of gasbag (34) are installed gas blow pipe (35) and breathing pipe (36) respectively, cooling chamber (37) have been seted up in operation panel (3), the other end of pipe (35) with breathing pipe (36) all runs through operation panel (3) with the inside in cooling chamber (37) is linked together, the top of the operating platform (3) is uniformly provided with a plurality of through holes (38).

7. A plastic film heat-sealing machine as claimed in claim 6, wherein: keep away from montant (16) one side install cold water storage cistern (39) on backup pad (2), the top swing joint of cold water storage cistern (39) has the screw thread lid, install circulating pipe (40) in cooling chamber (37), the both ends of circulating pipe (40) all run through operation panel (3) backup pad (2) with cold water storage cistern (39), circulating pipe (40) with the inside of cold water storage cistern (39) is linked together, install in cold water storage cistern (39) and push mechanism.

8. A plastic film heat-sealing machine as claimed in claim 7, wherein: push away crowded mechanism and include clamp plate (41), clamp plate (41) slidable mounting in the inner chamber of cold water storage cistern (39), the top fixedly connected with U-shaped pole (42) of clamp plate (41), U-shaped pole (42) with cold water storage cistern (39) sliding connection, the other end of U-shaped pole (42) with the top fixed connection of fly leaf (5), be close to U-shaped pole (42) one side seted up on backup pad (2) with the fluting of U-shaped pole (42) looks adaptation, evenly install a plurality of fins (43) on the lateral wall of cold water storage cistern (39).