CN106005518A - Automatic plastic packaging machine - Google Patents

Abstract

The invention provides an automatic plastic packaging machine which comprises a machine frame assembly, a sealing assembly, a folding assembly, a conveying belt assembly, a front folding plate, side folding rods, a rear folding rod, an air cylinder and a supporting beam. The sealing assembly and the folding assembly are arranged on the two sides of a crossbeam correspondingly in a coaxial mode. The conveying belt assembly is arranged on the upper end face of a base, and the conveying belt assembly is slidably connected with the base. The conveying belt assembly is arranged opposite to the sealing assembly and the folding assembly. The supporting beam is perpendicular to the crossbeam and is fixedly connected with the crossbeam. The end, away from an output shaft, of the air cylinder is hinged to the upper end face of the supporting beam. The end, where the output shaft is located, of the air cylinder is hinged to one end of the rear folding rod. The upper end, close to the air cylinder, of the rear folding rod is hinged to the supporting beam. The front folding plate is fixed to the lower end face of the supporting beam. The side folding rods are symmetrically arranged on the two sides of the front folding plate. The automatic plastic packaging machine is simple in structure and reliable, adaptive adjustment can be conducted according to the size of a packaged object, and the application range is wide.

Description

Automatic plastic bag sealing machine

Technical field

The invention belongs to plastics package apparatus field, particularly relate to automatic plastic bag sealing machine.

Background technology

In production process, need the article machined or fill completes are carried out packing and binding, vanning After need to seal with plastic, facilitate follow-up transport, along with the lifting of mechanical packaging level, The modes using streamline realize automatic packaging more, reduce labor intensity, promote production line simultaneously Efficiency, plastic adhesive tape packer is exactly one therein, utilizes press fit device to be entered on the four of packing crates limits Row is equivalent, and press fit device directly affects the outward appearance of case case to be packaged, also affects stablizing of contents breasting Property, bottom or the top cover of packaging are sealed by sealing device, and the quality of sealing directly affects packaged The safety of object, so press fit device and the practicality of sealing device, high efficiency and reliability are the heaviest Want.

Summary of the invention

The problem to be solved in the present invention is to be to provide more practical automatic plastic bag sealing machine.

For solving above-mentioned technical problem, the technical solution used in the present invention is: automatic plastic bag sealing machine includes frame Assembly, sealing parts, equivalent assembly and conveyer belt assembly, described housing assembly include base, column and Crossbeam, described column is located at the upper surface of described base both sides, described beam erection on described column, Described sealing parts and described equivalent assembly are respectively provided at the both sides of described crossbeam and the two is coaxially disposed, institute State conveyer belt assembly and be located at the upper surface of described base and the two is slidably connected, described conveyer belt assembly and institute State sealing assembly and described equivalent assembly is oppositely arranged；

Described column is leading screw, is provided with screw between described crossbeam and described column, and described screw is with described Crossbeam is fixing to be connected, and described column upper end is provided with the handle that column can be driven to rotate.

Further, the upper surface of described base is provided with multiple cylinder be arrangeding in parallel, the axis of described cylinder Vertical with the direction of transfer of described conveyer belt assembly.

Further, the both sides of described column are equipped with protective door, and described protective door is in the upper end of described base Face and the longitudinal center plane with described conveyer belt assembly be arranged in parallel.

Further, described equivalent assembly include front conduplicatio plate, side convert into bar, afterwards convert into bar, cylinder and Support beam, described support beam is perpendicular to described crossbeam and arranges and the two fixing connection, and described cylinder is away from exerting oneself One end of axle is hinged with the upper surface of described support beam, and the axle head of exerting oneself of described cylinder converts into bar after described One end hinged, described after equivalent bar near the upper end thereof of described cylinder in described support beam, described Front conduplicatio plate is fixed on the lower surface of described support beam, and described side converts into bar and is symmetricly set on described front equivalent The both sides of plate.

Further, described sealing parts include fixation kit, front component, wheel assembly, link assembly, Cutter holder assembly, adhesive tape support assembly, described fixation kit includes left plate and right plate, described front wheels Part is located at the front end between described left plate and described right plate and hinged with both, and described wheel assembly sets Rear end between described left plate and described right plate and hinged with both, described adhesive tape support assembly is solid It is scheduled on described fixation kit；

Described link assembly one end is hinged with the middle part of described front component, the other end and described wheel assembly Near the upper end thereof of described front component, described link assembly is provided with eccentric, described left plate and Middle part between right plate is provided with limit shaft, described eccentric and the described tangent setting of limit shaft cylindrical, institute State eccentric to be located at above described limit shaft；

Described cutter holder assembly is hinged between described left plate and right plate, and described fixation kit includes fixing Bar, described fixing bar is fixed between described left plate and right plate the one end near described front component, Described cutter holder assembly is provided with back-moving spring near between one end of described front component and described fixing bar, institute State cutter holder assembly and include that cutting knife, described cutting knife are located between described front component and described wheel assembly.

Further, described fixing bar and described back-moving spring coupling are arranged, and the quantity of described fixing bar is two Individual, the centrage of two described the most described fixation kits of fixing bar is symmetrical arranged.

Further, described cutter holder assembly also include cutting knife fixed plate, the first securing plate, the second securing plate, First knife rest fixed plate, the second knife rest fixed plate and locating shaft, described first knife rest fixed plate and described the Two knife rest fixed plates are hinged with described left plate, described right plate respectively, and described locating shaft is located at described Fixing between one knife rest fixed plate and described second knife rest fixed plate and with the two and be connected, described locating shaft leads to Crossing described back-moving spring to be connected with described fixing bar, described cutting knife fixed plate is located at described first knife rest and fixes Fixing be connected between plate and described second knife rest fixed plate and with the two, described cutting knife fixed plate be located at away from One end of described locating shaft, described first securing plate and described second securing plate are located at described cutting knife fixed plate Both sides, described cutting knife is located between described first securing plate and described second securing plate.

Further, described first securing plate and described second securing plate are equipped with " u "-shaped groove, described Described " u "-shaped channel opening in first securing plate and described second securing plate is oppositely arranged.

Further, described first knife rest fixed plate is identical with the structure of described second knife rest fixed plate, described The lower end of the first knife rest fixed plate is provided with the first bending, and described first bending is to solid away from described second knife rest The side determining plate extends, and described first bending is vertical with described first knife rest fixed plate, further, described First bending is provided with the second bending, described first bending and described second folding away from one end of described locating shaft Bent arc connects.

Further, described front component includes front wheel, roll fixed shaft, the first front-wheel fixation rack and Two front-wheel fixation racks, described roll fixed shaft is located at described first front-wheel fixation rack and described second front-wheel is solid Determining between frame and two ends are all screwed connection, described front wheel coaxially sets with described roll fixed shaft Put.

Compared with prior art, the present invention has the advantage that with good effect and is: 1, the present invention will seal Parts, equivalent parts and conveyer belt component matching are arranged, it is achieved that be folded to the automatization of sealing, and Crossbeam can pass through screw, screw mechanism up-down adjustment, and the width of conveyer belt is slidably connected in base, width Scalable, meets the use requirement of different size case to be packaged, and the scope of application is wider, more practical； 2, equivalent assembly uses the bar linkage structure of air cylinder driven, can realize the equivalent of four limits simultaneously, and efficiency is high, The concordance of equivalent action is more preferably；3, by link assembly, front component is attached with wheel assembly, Achieve the harmony of front and rear wheel assembly action, utilize eccentric to carry out the restriction of wheel assembly simultaneously, Further ensure the accurate realization of action so that total is compacter, it is ensured that the quality of sealing, More practical, seal in hgher efficiency；4, the both sides of cutting knife increase the first securing plate and the second securing plate, Cutting knife can be protected, it is ensured that the stability of cut-out action, promote the service life of cutting knife；5, front Roller is threaded connection by the fixed mount of roll fixed shaft with both sides, rolling before convenient dismounting and replacing Wheel, promotes practicality.

Accompanying drawing explanation

The accompanying drawing of the part constituting the invention is used for providing being further appreciated by the invention, The schematic description and description of the invention is used for explaining the invention, is not intended that this The improper restriction of bright creation.In the accompanying drawings:

Fig. 1 is the structural representation of automatic plastic bag sealing machine of the present invention.

Fig. 2 is the A portion detail drawing of automatic plastic bag sealing machine of the present invention.

Fig. 3 is the structural representation that the present invention seals parts.

Fig. 4 is that the present invention seals the parts structural representation without left plate.

Fig. 5 is the structural representation of front component of the present invention.

Fig. 6 is the structural representation that cutter holder assembly cutting knife of the present invention is downward-sloping.

Fig. 7 is the acclivitous structural representation of cutter holder assembly cutting knife of the present invention.

10-seals parts；1-fixation kit；11-left plate；12-right plate；13-limit shaft；14- Fixing bar；2-wheel assembly；3-front component；31-front wheel；32-roll fixed shaft；33-first Front-wheel fixation rack；34-the second front-wheel fixation rack；4-cutter holder assembly；41-cutting knife；42-cutting knife fixed plate； 43-the first securing plate；44-the second securing plate；45-the first knife rest fixed plate；46-the second knife rest fixed plate； 47-locating shaft；5-adhesive tape support group；6-link assembly；61-eccentric；20-housing assembly；201- Crossbeam；202-base；203-column；2031-handle；204-protective door；30-converts into assembly；；301- Support beam；Conduplicatio plate before 302-cylinder 304-；306-side converts into bar；Equivalent bar after 305-；40-carries Band assembly；50-cylinder.

Detailed description of the invention

It should be noted that in the case of not conflicting, in embodiment in the invention and embodiment Feature can be mutually combined.

In the description of the invention, it is to be understood that term " " center ", " longitudinally ", " horizontal stroke To ", " on ", D score, "front", "rear", "left", "right", " vertically ", " water Flat ", the orientation that indicates of " top ", " end ", " interior ", " outward " etc. or position relationship be based on attached Orientation shown in figure or position relationship, be for only for ease of description the invention and simplify description, and not Be instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and Operation, therefore it is not intended that restriction to the invention.Additionally, term " first ", " second " Etc. being only used for describing purpose, and it is not intended that instruction or hint relative importance or implicit indicate indication The quantity of the technical characteristic shown.Thus, the feature defining " first ", " second " etc. can be expressed Or implicitly include one or more this feature.In the description of the invention, unless otherwise Illustrating, " multiple " are meant that two or more.

In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " install ", " being connected ", " connection " should be interpreted broadly, and connect, also for example, it may be fixing Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals. For the ordinary skill in the art, can understand that above-mentioned term is in the present invention by concrete condition Concrete meaning in creation.

Below in conjunction with the accompanying drawings the specific embodiment of the present invention is elaborated.

As it is shown in figure 1, the present invention is automatic plastic bag sealing machine, including housing assembly 20, sealing parts 10, Equivalent assembly 30 and conveyer belt assembly 40, housing assembly 20 includes base 202, column 203 and crossbeam 201, column 203 is located at the upper surface of base 202 both sides, and crossbeam 201 is erected on column 203, Sealing parts 10 and equivalent assembly 30 are respectively provided at the both sides of crossbeam 201 and the two is coaxially disposed, conveying It is located at the upper surface of base 202 with assembly 40 and the two is slidably connected, conveyer belt assembly 40 and sealing group Part and equivalent assembly 30 are oppositely arranged；Column 203 is leading screw, sets between crossbeam 201 and column 203 Having screw, screw is fixing with crossbeam 201 to be connected, and column 203 upper end is provided with and column 203 can be driven to rotate Handle 2031, the convenient height adjusting crossbeam 201, and then realize adjusting sealing parts 10 and equivalent The height of assembly 30, it is achieved the equivalent and sealing of the case to be packaged of differing heights specification, the scope of application is more Extensively；Preferably, the upper surface of base 202 is provided with multiple cylinder 50 be arrangeding in parallel, the axle of cylinder 50 Line is vertical with the direction of transfer of conveyer belt assembly 40, can reduce frictional force time case to be packaged moves ahead, Lifting Convey speed；It is highly preferred that the both sides of column 203 are equipped with protective door 204, protective door 204 It is arranged in parallel, outside can preventing in the upper surface of base 202 and with the longitudinal center plane of conveyer belt assembly 40 Boundary's foreign material enter into packaging area, affect packaging quality, non-operator the most also can be avoided close, carry Rise safety.

Preferably, as in figure 2 it is shown, equivalent assembly 30 include front conduplicatio plate 304, side convert into bar 306, Rear equivalent bar 305, cylinder 302 and support beam 301, support beam 301 be perpendicular to crossbeam 201 arrange and The two fixing connection, cylinder 302 is hinged with the upper surface of support beam 301 away from one end of force-output shaft, gas The axle head of exerting oneself of cylinder 302 is hinged with one end of rear equivalent bar 305, and rear equivalent bar 305 is near cylinder 302 Upper end thereof in support beam 301, front conduplicatio plate 304 is fixed on the lower surface of support beam 301, side Equivalent bar 306 is symmetricly set on the both sides of front conduplicatio plate 304.

Preferably, as shown in Fig. 3, Fig. 4 and Fig. 6, sealing parts 10 include fixation kit 1, front-wheel Assembly 3, wheel assembly 2, link assembly 6, cutter holder assembly 4, adhesive tape support assembly 5, fixation kit 1 includes left plate 11 and right plate 12, and front component 3 is located between left plate 11 and right plate 12 Front end and hinged with both, wheel assembly 2 be located at the rear end between left plate 11 and right plate 12 and Hinged with both, adhesive tape support assembly 5 is fixed on fixation kit 1；

Link assembly 6 one end is hinged with the middle part of front component 3, and the other end and wheel assembly 2 are near front The upper end thereof of wheel assembly 3, link assembly 6 is provided with eccentric 61, left plate 11 and right plate 12 Between middle part be provided with limit shaft 13, eccentric 61 and the limit shaft 13 tangent setting of cylindrical, eccentric 61 are located at above limit shaft 13；

Cutter holder assembly 4 is hinged between left plate 11 and right plate 12, and fixation kit 1 includes fixing bar 14, fixing bar 14 is fixed between left plate 11 and right plate 12 one end near front component 3, Cutter holder assembly 4 is near being provided with back-moving spring, knife rest group between one end of front component 3 and fixing bar 14 Part 4 includes that cutting knife 41, cutting knife 41 are located between front component 3 and wheel assembly 2.

Preferably, fixing bar 14 and back-moving spring coupling are arranged, and the quantity of fixing bar 14 is two, and two The centrage that individual fixing bar 14 is relatively fixed assembly 1 is symmetrical arranged, and both sides cutter setting frame assembly 4 simultaneously enters The fixing use that resetted of row, more preferably, intensity is more preferable, in the reality cutting-off process to adhesive plaster more for stability Add stable.

Preferably, as shown in Figure 6 and Figure 7, cutter holder assembly 4 also includes cutting knife fixed plate 42, first adds Gu plate the 43, second securing plate the 44, first knife rest fixed plate the 45, second knife rest fixed plate 46 and locating shaft 47, the first knife rest fixed plate 45 and the second knife rest fixed plate 46 respectively with left plate 11, right plate 12 Hinged, locating shaft 47 is located between the first knife rest fixed plate 45 and the second knife rest fixed plate 46 and with two Person is fixing to be connected, and locating shaft 47 is connected with fixing bar 14 by back-moving spring, and cutting knife fixed plate 42 sets Fixing between the first knife rest fixed plate 45 and the second knife rest fixed plate 46 and with the two and be connected, cutting knife is solid Determining plate 42 and be located at one end of remotely located axle 47, the first securing plate 43 and the second securing plate 44 are located at and cut The both sides of cutter fixed plate 42, cutting knife 41 is located between the first securing plate 43 and the second securing plate 44, the Cutting knife 41 can be played certain protective effect by one securing plate 43 and the second securing plate 44, extends and uses Life-span；It is highly preferred that be equipped with " u "-shaped groove in the first securing plate 43 and the second securing plate 44, the " u "-shaped channel opening in one securing plate 43 and the second securing plate 44 is oppositely arranged, convenient dismounting and peace Dress, is also convenient for replacing and the maintenance of cutting knife 41.

Preferably, the first knife rest fixed plate 45 is identical with the structure of the second knife rest fixed plate 46, promotes zero The commonality of part, reduces cost；It is highly preferred that the lower end of the first knife rest fixed plate 45 is provided with the first folding Curved 451, the first bending 451 extends to the side away from the second knife rest fixed plate 46, the first bending 451 Vertical with the first knife rest fixed plate 45, it is possible to increase with the contact area of packing crates to be stapled, to be difficult to treat Cut is caused on packing crates surface, can realize certain effect that covers, the compacting of Convenient adhesive tape simultaneously；More excellent Selection of land, one end of the first remotely located axle of bending 451 47 is provided with the second bending 4511, the first bending 451 With the second bending 4511 circular sliding slopes, it is to avoid corner treats packing crates surface and causes scuffing, promote peace Full property and practicality.

Preferably, as it is shown in figure 5, front component 3 include front wheel 31, roll fixed shaft 32, One front-wheel fixation rack 33 and the second front-wheel fixation rack 34, roll fixed shaft 32 is located at the first front-wheel fixation rack 33 and second between front-wheel fixation rack 34 and two ends are all screwed connection, front wheel 31 and roller Fixing axle 32 is coaxially disposed, and facilitates dismounting and the replacing of front wheel 31, maintains convenient.

In actual operating process, case to be packaged is placed on cylinder 50, and is placed on conveyer belt group The inside of part 40, along with the advance of case to be packaged, the carton of side is converted into by front conduplicatio plate 304, Cylinder 302 action simultaneously, converts into the carton of both sides and rear end, before after completing folding, rear carton continues Enter, before this adhesive tape of sealing is fixed on adhesive tape support assembly 5 at this, case to be packaged wheels in the past The direction of part 3 rear wheel assembly 2 is moved, and adhesive tape passes through a series of rollers eventually through on front component 3 Front wheel 31 be bonded on case to be packaged, meanwhile under the effect of link assembly 6, rear wheels Part 2 lifts, and the distance lifted depends on the matching relationship of eccentric 61 and limit shaft 13, case to be packaged During advance, fit with the first bending 451 in upper surface, when case to be packaged moves forward to knife rest group The when of between part 4 and wheel assembly 2, cutter holder assembly 4, under the effect of return spring force, is transported downwards Dynamic, cutting knife 41 is by adhesive tape cutting, now due to front component 4 and case legend to be packaged, wheel assembly 2 Also will decline, the adhesive tape after cutting off is compacted further, and covers the adhesive tape of side, whole During, cutting knife 41, under the first securing plate 43 and the second securing plate 44 are protected, cuts off more steady, Simultaneously because roll fixed shaft 32 and the first front-wheel fixation rack 33 and the second front-wheel fixation rack 34 screw thread are even Connect, facilitate front wheel 31 and dismantle and safeguard, can set according to the specification of case to be packaged with client The width of conveyer belt assembly 40 and the height of crossbeam 201, total is simple and reliable, can wrap according to waiting The specification of vanning is adjusted, applied widely, and stable performance, easy to maintenance.

Above one embodiment of the present of invention is described in detail, but described content has been only the present invention's Preferred embodiment, it is impossible to be considered the practical range for limiting the present invention.All according to the present patent application scope Impartial change and the improvement etc. made, within all should still belonging to the patent covering scope of the present invention.

Claims (10)

1. automatic plastic bag sealing machine, it is characterised in that: include housing assembly (20), sealing parts (10), Equivalent assembly (30) and conveyer belt assembly (40), described housing assembly (20) include base (202), Column (203) and crossbeam (201), described column (203) is located at described base (202) both sides Upper surface, described crossbeam (201) is erected on described column (203), described sealing parts (10) It is respectively provided at the both sides of described crossbeam (201) with described equivalent assembly (30) and the two is coaxially disposed, Described conveyer belt assembly (40) is located at the upper surface of described base (202) and the two is slidably connected, institute State conveyer belt assembly (40) to be oppositely arranged with described sealing assembly and described equivalent assembly (30)；

Described column (203) is leading screw, sets between described crossbeam (201) and described column (203) Having screw, described screw is fixing with described crossbeam (201) to be connected, and described column (203) upper end is provided with The handle (2031) that column (203) rotates can be driven.

Automatic plastic bag sealing machine the most according to claim 1, it is characterised in that: described base (202) Upper surface be provided with multiple cylinder (50) be arrangeding in parallel, the axis of described cylinder (50) is defeated with described The direction of transfer sending band assembly (40) is vertical.

Automatic plastic bag sealing machine the most according to claim 1, it is characterised in that: described column (203) Both sides be equipped with protective door (204), described protective door (204) is upper described base (202) End face and the longitudinal center plane with described conveyer belt assembly (40) be arranged in parallel.

Automatic plastic bag sealing machine the most according to claim 1, it is characterised in that: described equivalent assembly (30) Convert into bar (306) including front conduplicatio plate (304), side, convert into bar (305), cylinder (302) afterwards With support beam (301), described support beam (301) is perpendicular to described crossbeam (201) and arranges and the two Fixing connection, described cylinder (302) one end away from force-output shaft and the upper end of described support beam (301) Face is hinged, and the axle head of exerting oneself of described cylinder (302) is hinged with one end of described rear equivalent bar (305), After described, the upper end thereof of the close described cylinder (302) of equivalent bar (305) is in described support beam (301) On, described front conduplicatio plate (304) is fixed on the lower surface of described support beam (301), and described side converts into Bar (306) is symmetricly set on the both sides of described front conduplicatio plate (304).

5. according to the automatic plastic bag sealing machine described in claim 1,2,3 or 4, it is characterised in that: described Sealing parts (10) includes fixation kit (1), front component (3), wheel assembly (2), connects Bar assembly (6), cutter holder assembly (4), adhesive tape support assembly (5), described fixation kit (1) wraps Including left plate (11) and right plate (12), described front component (3) is located at described left plate (11) And front end between described right plate (12) and hinged with both, described wheel assembly (2) is located at institute Stating the rear end between left plate (11) and described right plate (12) and hinged with both, described adhesive tape props up Frame assembly (5) is fixed on described fixation kit (1)；

Described link assembly (6) one end is hinged with the middle part of described front component (3), the other end and institute State the wheel assembly (2) upper end thereof near described front component (3), described link assembly (6) Being provided with eccentric (61), the middle part between described left plate (11) and right plate (12) is provided with limit Position axle (13), described eccentric (61) and the tangent setting of described limit shaft (13) cylindrical, described partially Heart wheel (61) is located at described limit shaft (13) top；

Described cutter holder assembly (4) is hinged between described left plate (11) and right plate (12), institute Stating fixation kit (1) and include fixing bar (14), described fixing bar (14) is fixed on described left plate (11) near one end of described front component (3), described cutter holder assembly and between right plate (12) (4) between one end and the described fixing bar (14) of described front component (3), it is provided with back-moving spring, Described cutter holder assembly (4) includes that described front component (3) is located at by cutting knife (41), described cutting knife (41) And between described wheel assembly (2).

Automatic plastic bag sealing machine the most according to claim 5, it is characterised in that: described fixing bar (14) Arranging with described back-moving spring coupling, the quantity of described fixing bar (14) is two, and two described fixing The centrage of bar (14) the most described fixation kit (1) is symmetrical arranged.

Automatic plastic bag sealing machine the most according to claim 5, it is characterised in that: described cutter holder assembly (4) Also include cutting knife fixed plate (42), the first securing plate (43), the second securing plate (44), the first cutter Frame fixed plate (45), the second knife rest fixed plate (46) and locating shaft (47), described first knife rest is solid Determine plate (45) and described second knife rest fixed plate (46) respectively with described left plate (11), the described right side Side plate (12) is hinged, and described locating shaft (47) is located at described first knife rest fixed plate (45) and described Fixing between second knife rest fixed plate (46) and with the two and be connected, described locating shaft (47) is by described Back-moving spring is connected with described fixing bar (14), and described cutting knife fixed plate (42) is located at described first cutter Fix between frame fixed plate (45) and described second knife rest fixed plate (46) and with the two and be connected, described Cutting knife fixed plate (42) is located at the one end away from described locating shaft (47), described first securing plate (43) With the both sides that described second securing plate (44) is located at described cutting knife fixed plate (42), described cutting knife (41) It is located between described first securing plate (43) and described second securing plate (44).

Automatic plastic bag sealing machine the most according to claim 7, it is characterised in that: described first securing plate (43) " u "-shaped groove, described first securing plate (43) and it are equipped with in described second securing plate (44) It is oppositely arranged with the described " u "-shaped channel opening on described second securing plate (44).

Automatic plastic bag sealing machine the most according to claim 7, it is characterised in that: described first knife rest is solid Determine plate (45) identical with the structure of described second knife rest fixed plate (46), described first knife rest fixed plate (45) lower end is provided with the first bending (451), and described first bending (451) is to away from described second The side of knife rest fixed plate (46) extends, and described first bending (451) is fixed with described first knife rest Plate (45) is vertical, and described first bending (451) is provided with the away from one end of described locating shaft (47) Two bendings (4511), described first bending (451) and described second bending (4511) circular sliding slopes.

Automatic plastic bag sealing machine the most according to claim 5, it is characterised in that: described front component (3) Including front wheel (31), roll fixed shaft (32), the first front-wheel fixation rack (33) and the second front-wheel Fixed mount (34), described roll fixed shaft (32) is located at described first front-wheel fixation rack (33) and institute State between the second front-wheel fixation rack (34) and two ends are all screwed connection, described front wheel (31) It is coaxially disposed with described roll fixed shaft (32).