CN117622600A

CN117622600A - Toast film pasting method

Info

Publication number: CN117622600A
Application number: CN202311654081.2A
Authority: CN
Inventors: 冯文波; 向小均
Original assignee: Guangdong Yiren Technology Co ltd
Current assignee: Guangdong Yiren Technology Co ltd
Priority date: 2023-12-05
Filing date: 2023-12-05
Publication date: 2024-03-01

Abstract

The invention relates to the technical field of food packaging, in particular to a toast film pasting method; the method comprises the following steps: s1: cutting toast according to the setting and filling; s2: starting an automatic film sticking machine, and sticking a film to the toast through the automatic film sticking machine; s3: packaging the toast with the film. Wherein, the automatic film sticking machine in step S2 includes the conveyer that is used for conveying the toast, locates the film feeding subassembly of conveyer top, and with the cutting membrane subassembly that the discharge end of film feeding subassembly is connected, its characterized in that still includes: the film conveying device is used for providing adsorption force for the film material passing through the film cutting assembly and is arranged at the unloading end of the film conveying assembly; triggering an electric control device for controlling the synchronous conveying of the film conveying device and the conveying device; the discharging end of the film conveying device is opposite to the discharging end of the conveying device; the film conveying device is a negative pressure film conveying device. Can improve the film pasting efficiency of the toast and improve the sales quality of the toast.

Description

Toast film pasting method

Technical Field

The invention relates to the technical field of food packaging, in particular to a toast film pasting method.

Background

Toast is one of western bread, and is prepared by wrapping square bread with bread toaster, baking until the bread is fragrant, taking out, coating one side of square bread with ingredients such as butter, jam, etc., and clamping two square bread. The prior toast in the market is generally not pasted with a film, and during the transportation process, the ingredients such as jam and the like on the toast can be adhered to the inner surface of the packaging bag, so that the quality of the toast is affected.

The invention patent of application number 201510721997.4 discloses a pad pasting device for food package, including transport mechanism, pad pasting mechanism and pushing mechanism, transport mechanism includes first conveyer belt and second conveyer belt, first conveyer belt and second conveyer belt are 90 setting, pad pasting mechanism includes processing platform, axis of rotation, support arm and pad pasting pole, the processing platform is located between the input of first conveyer belt output and second conveyer belt, one side that the second conveyer belt was kept away from to the processing platform is equipped with the support, support arm middle part fixed connection is in the axis of rotation, the both ends of support arm are connected with the pad pasting pole respectively, and the pad pasting pole is located processing platform both sides, be equipped with the cutter that is used for cutting off the plastic wrap on the food between pad pasting pole and the processing platform that is close to the support, pushing mechanism includes cam mechanism and the ejector pad that is used for pushing food, the ejector pad is connected on cam mechanism. By implementing the technical scheme, the problems of hidden food health hazards and high labor intensity existing in the existing food packaging process are solved.

According to the technology, the food is pushed to the designated position through the pushing block to carry out film pasting, and for food with harder texture, the pushing does not affect the appearance of the food, but the food is softer for toast, the food is cake food with required appearance when sold, the appearance of the food is possibly damaged when being stressed, meanwhile, ingredients above the food are disturbed, the sales quality of the toast is seriously affected, and if a manual film pasting mode is adopted, time and effort are wasted, and the need for efficiently pasting the film for the toast exists.

Disclosure of Invention

The invention provides a toast film pasting method, which can improve the film pasting efficiency of toast and improve the sales quality of toast.

In order to solve the technical problems, the application provides the following technical scheme: 1. a toast film-coating method, comprising the steps of:

s1: cutting toast according to the setting and filling;

s2: starting an automatic film sticking machine, and sticking a film to the toast through the automatic film sticking machine;

s3: packaging the toast with the film.

Wherein, the automatic film sticking machine in step S2 includes the conveyer that is used for conveying the toast, locates the film feeding subassembly of conveyer top, and with the cutting membrane subassembly that the discharge end of film feeding subassembly is connected, its characterized in that still includes:

the film conveying device is used for providing adsorption force for the film material passing through the film cutting assembly and is arranged at the unloading end of the film conveying assembly; triggering an electric control device for controlling the synchronous conveying of the film conveying device and the conveying device; the discharging end of the film conveying device is opposite to the discharging end of the conveying device; the film conveying device is a negative pressure film conveying device.

The basic principle and the beneficial effects of the scheme are that: firstly, cutting toast into pieces, adding raw materials such as jam and the like into the pieces for later use, conveying toast through a conveying device, conveying the thin film material in the same direction through a film conveying assembly, cutting the thin film material into films with the size corresponding to that of the toast through a film cutting assembly, arranging the film conveying device at the unloading end of the film conveying assembly, providing adsorption force for the thin film material passing through the film cutting assembly, and conveying the cut films along with the film conveying device, so that the films can be ensured to smoothly leave the film conveying assembly, and the problem that the films are wound behind the film conveying assembly due to static electricity by a roller can be solved. The electronic control device triggers and controls the film conveying device and the conveying device to synchronously convey, the discharging end of the film conveying device and the discharging end of the conveying device are arranged oppositely, thus the film conveyed by the film conveying device just covers the surface of the toast conveyed by the discharging end of the conveying device, and the products pasted with the film are conveyed forwards together continuously, so that the film pasting action is completed, the film pasting device can work continuously, the working efficiency is higher, jam in the toast package is ensured not to be stuck to an inner packaging bag, the attractiveness and the integrity of the toast are ensured, the hands of a customer are also ensured not to be polluted when the toast is eaten by the customer, and the eating cleanliness is ensured.

Further, the negative pressure film conveying device comprises a connecting bracket, a negative pressure mechanism and a conveying belt mechanism, wherein the negative pressure mechanism and the conveying belt mechanism are arranged on the connecting bracket; the negative pressure mechanism comprises a negative pressure frame and a negative pressure generator, the negative pressure frame and the negative pressure generator are both arranged on the connecting bracket, and the negative pressure output end of the negative pressure generator is connected with the negative pressure frame, so that a negative pressure environment can be formed in the negative pressure frame; the conveying belt mechanism comprises a conveying power piece and a conveying belt, the conveying power piece is arranged on the connecting bracket, the conveying belt is in power connection with a power output end of the conveying power piece, a plurality of vent holes are formed in the surface of the conveying belt, the conveying belt covers the surface of a frame opening of the negative pressure frame, and the negative pressure generator can provide adsorption force for film materials on the conveying belt through the vent holes so that the film materials can be conveyed along with the conveying belt; the negative pressure film conveying device further comprises a second tensioning deviation adjusting bolt used for adjusting the tightness of the conveying belt.

Further, the automatic film sticking machine comprises a feeding component for installing a film material roll and a film passing component for guiding and flattening the film material, and the feeding component, the film passing component, the film feeding component and the film cutting component are sequentially arranged along the conveying direction of the film material; the membrane cutting device also comprises a supporting side plate and a height adjusting device which is connected with the supporting side plate and used for adjusting the height of the membrane feeding assembly, the membrane passing assembly and the membrane cutting assembly.

Further, the feeding assembly comprises a scroll arranged on the supporting side plate and a locking piece for fixing the film material roll; the film passing assembly comprises a plurality of rollers arranged on the supporting side plates and limiting sleeves sleeved on the rollers, and the film material is connected to the outer surfaces of the rollers in a penetrating mode and limited in axial positions by the limiting sleeves.

Further, the automatic film sticking machine comprises a main frame, and the conveying device, the film feeding assembly, the film cutting assembly, the film feeding conveying device and the electric control device are arranged on the main frame;

the film feeding device comprises a driving roller, a driven roller and a gap adjusting piece capable of adjusting the radial position of the driven roller, wherein the driving roller and the driven roller are arranged side by side, and a gap suitable for passing a film material is arranged between the driving roller and the driven roller;

the film cutting assembly comprises a base, a fixed knife, an elastic extrusion piece and a linear moving piece, wherein the fixed knife, the elastic extrusion piece and the linear moving piece are arranged on the base, the linear moving piece is provided with a moving end capable of moving towards a direction close to or far away from the fixed knife, a movable knife is arranged on the moving end, the movable knife is provided with an extending plate, the extending plate abuts against the fixed knife, and when the moving end moves towards the fixed knife, the cutting edge of the movable knife is tangent to the cutting edge of the fixed knife;

the elastic extrusion piece is propped against the extending plate, and the extrusion force of the elastic extrusion piece faces the fixed knife, so that the extending plate and the fixed knife are kept in a propped state.

Further, the elastic extrusion piece comprises a spring and a movable frame, the movable frame is hinged on the base, one end of the spring is installed on the base, the other end of the spring is abutted against one side of the movable frame, and the movable frame can be abutted against the other side of the extending plate under the action of the elastic force of the spring;

the movable frame is L-shaped, one end of the movable frame is hinged with the base, the other end of the movable frame is connected with the end, away from the base, of the spring, a pressing block is arranged at the corner of the movable frame, and the pressing block is pressed against the extending plate and extrudes the extending plate towards the fixed knife direction under the action of the elastic force of the spring.

Further, the straight line moving part includes removes frame, driving piece, guide and transfer line, remove the frame for remove the end, remove the frame with base sliding fit, the movable knife is installed remove on the frame, the driving piece with the base is fixed relatively, the driving end of driving piece with the guide links to each other, the one end of transfer line with the guide is kept away from the position of driving piece articulates, the other end with it articulates to remove the frame, driving piece, guide, transfer line, removal frame form slider-crank structure, drive and remove frame rectilinear movement.

Further, the guide piece adopts an eccentric wheel, the eccentric wheel and the driving end of the driving piece coaxially rotate, and one end of the transmission rod is hinged with the side face of the eccentric wheel;

the base is provided with the slide rail, the length direction of slide rail with the direction of movement of moving the frame is parallel, it is provided with the slider to move the frame, the slider with slide rail sliding fit.

Further, the conveying device comprises a power piece, a driving shaft, a driven shaft and a conveying belt sleeved on the peripheries of the driving shaft and the driven shaft, and the power piece is in power connection with the driving shaft; the conveying device further comprises a first tensioning deviation adjusting bolt used for adjusting the conveying belt;

the electric control device comprises a frequency converter, a PLC controller and an operation screen, wherein the operation screen is electrically connected with the frequency converter, the PLC controller and a conveying device, a film conveying assembly, a film cutting assembly and a film conveying device.

Further, before the automatic film sticking machine is started, the automatic film sticking machine is required to be detected, and the detection method is as follows:

s11: removing the abnormality of the conveying device:

s111: when the conveyor belt does not run, checking whether input parameters below corresponding conveying speed items of the operation screen are correct, checking whether corresponding conveying starting buttons are started, checking whether the conveying device is blocked by foreign matters, and checking whether the tension of the conveyor belt is overlarge;

s112: when the conveyer belt operates and has a slipping phenomenon: stopping the machine to check whether the conveyor belt is tensioned, and adjusting the tension of the conveyor device through a first tensioning deflection bolt if the tension is insufficient, wherein the tension of the edges of the two sides of the belt is kept consistent in the tensioning adjustment process;

s113: when the conveyor runs and deviates, stopping and adjusting, adjusting the conveyor by a first tensioning deviation adjusting bolt until the conveyor is loosened, adjusting the conveyor to be correct again, ensuring that guide strips in the conveyor are positioned in each wheel group and a conveyor frame body running groove, and then gradually tensioning the conveyor belt, wherein the tensioning tension of edges at two sides of the conveyor belt is required to be kept consistent in the tensioning process;

s12: removing abnormality of the negative pressure film feeding conveyor belt:

s121: the conveyor belt does not run: and checking whether the right input parameters of the corresponding film drawing speed items of the operation screen are correct, checking whether the conveying device is blocked by foreign matters, and checking whether the tension of the conveying belt is overlarge.

S122: the conveyor belt runs with slipping phenomenon: stopping the machine to check whether the conveyor belt is tensioned, if the tension is insufficient, finding a second tensioning deviation adjusting bolt, and adjusting and tensioning the second tensioning deviation adjusting bolt in the tensioning adjustment process, wherein the tension of the edges of the two sides of the belt is kept consistent;

s123: the conveyor belt runs and appears the off tracking phenomenon: stopping the machine for adjustment, finding out a second tensioning deviation adjusting bolt, adjusting the second tensioning deviation adjusting bolt until the conveyor belt is loosened, adjusting the conveyor belt again, ensuring that guide bars in the conveyor belt are positioned in running grooves of all wheel sets and conveying frame bodies, tensioning the conveyor belt gradually, and keeping the tensioning tension of edges at two sides of the conveyor belt consistent in the tensioning process;

s124: film phenomenon is not adsorbed on the conveyor belt: stopping the machine to check whether the suction pump in the machine body is started or not, and checking whether the hose joint is loose or falls;

s13: removing abnormal cutting film; the fixed knife is matched with the movable knife to form a cutter;

s131: when the cutter does not operate: checking whether input parameters of the operation screen corresponding to the cutter speed and the cutter stroke item are correct or not, and checking whether a servo motor is in situ or not to reset the cutter;

s132: film cutting and continuous phenomenon: checking whether the cutting edge is worn or not and the notch; checking whether the cutters are crossed in place when running; checking whether the cutter pressing bearing is used for pressing the cutter in a limited way, and checking whether cutter openings are aligned during movement.

Drawings

FIG. 1 is a flow chart of the method of embodiment 1 of the present invention;

fig. 2 is a schematic perspective view of an automatic film sticking machine in embodiment 1 of the present invention;

FIG. 3 is a schematic view of the negative pressure film feeding and conveying device shown in FIG. 2;

FIG. 4 is a schematic diagram of another side view of FIG. 3;

FIG. 5 is an enlarged schematic view of FIG. 4 at A;

FIG. 6 is a rear view of an automatic laminator according to another embodiment of the invention;

FIG. 7 is a schematic view showing the structure of a film feeding device, a negative pressure film feeding device and a film passing assembly according to another embodiment of the present invention;

FIG. 8 is a schematic view of a membrane cutting assembly according to another embodiment of the present invention;

FIG. 9 is a schematic diagram of another side view of FIG. 8;

fig. 10 is a front view of fig. 8;

fig. 11 is an enlarged schematic view of fig. 1B in another embodiment.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals illustrate: 10. a transfer device; 11. a driving shaft; 12. a driven shaft; 13. a conveyor belt; 20. a film feeding component; 21. a driving roller; 22. a driven roller; 30. a membrane cutting assembly; 31. a base; 311. an opening; 312. a slide rail; 32. fixing the knife; 33. an elastic extrusion; 331. a spring; 332. a movable frame; 34. a movable knife; 35. a linear moving member; 351. a moving rack; 352. a driving member; 353. a guide member; 354. a transmission rod; 355. a slide block; 36. a protruding plate; 37. pressing the blocks; 38. pressing the roller; 40. a negative pressure film feeding and conveying device; 41. a connecting bracket; 411. a connecting shaft; 42. a negative pressure mechanism; 421. a negative pressure frame; 422. an air extraction interface; 43. a conveyor belt mechanism; 431. a transmission belt; 432. a tension roller; 433. a vent hole; 44; a turnover mechanism; 441. a rotating member; 442. a coupling; 50. an electric control device; 51. an operation screen; 60. a feeding assembly; 61. a reel; 62. a locking member; 70. passing through a membrane assembly; 71. a roller; 72. a limit sleeve; 80. a height adjusting device; 81. a screw rod; 82. a hand wheel; 90. supporting the side plates; 100. a main frame; 101. a first tensioning offset bolt; 102. a pressing seat; 103. pressing head.

An embodiment as shown in figure 1 of the drawings,

s1: cutting toast according to the setting and filling;

operating and adjusting each functional part of the automatic film sticking machine and removing faults:

the transmission device is started and stopped: clicking the operation screen (automatic picture) to enter (automatic picture) in the corresponding 'conveying speed' item

Inputting parameters at the lower part, clicking a button (conveying start) or a button (conveying stop) behind the parameters, and thus realizing the start-stop state of the conveying device;

the parameter value input under the conveying speed item is to directly control the rotating speed of the horizontal conveying motor, if the conveying speed is required to be increased or decreased,

the new value can be directly input to change the rotating speed, and the running speed of the conveying device can be changed.

Transmission device abnormality removal:

s11: removing the abnormality of the conveying device:

s12: adjusting the negative pressure film conveying belt and removing the abnormality:

conveyor belt speed setting: the parameters are input on the right side of the corresponding item of film drawing speed, so that the rotating speed of the film conveying motor can be controlled, if the conveying speed is required to be increased or decreased, a new value can be directly input to change the rotating speed, and the running speed of the conveyor belt can be changed.

s132: film cutting and continuous phenomenon: checking whether the cutting edge is worn or not and the notch; checking whether the cutters are crossed in place when running; inspection and detection

Checking whether the pressing knife bearing has a pressing knife or not, and checking whether the knife opening is aligned or not during movement.

s3: packaging the toast with the film.

Referring to fig. 2, there is schematically shown an automatic laminator for use in accordance with the present invention, the automatic laminator including a main frame 100, a transfer device 10 mounted on the main frame 100, a film feeding assembly 20, a film cutting assembly 30, a film feeding conveyor, and an electronic control device 50, the transfer device 10 being configured to transfer toasts. The automatic film sticking machine can be used for sticking films to cake foods with jams on the surfaces of toasts, cakes and the like, a pre-packaging process is realized, jam is prevented from adhering to the inner surface of a packaging bag, the quality of toast is influenced, and the cleanness, the sanitation and the attractiveness of toast products are ensured. The conveying device 10 adopts a power piece (not shown), a driving shaft 11, a driven shaft 12 and a conveying belt 13, the driving shaft 11 is driven to rotate by the power piece, and the conveying belt 13 on the periphery is driven to convey around the driving shaft 11 and the driven shaft 12, so that the conveying function of the toast is realized. In this example, the toast product is transported to the next step of the film pre-packaging process.

The film feeding assembly 20 is arranged above the conveying device 10, the film cutting assembly 30 is connected with the unloading end of the film feeding assembly 20, the film material is conveyed to the film cutting assembly 30 through the film feeding assembly 20, the film cutting assembly 30 is used for cutting the conveyed film material, the cutting size is determined according to the toast size, the film feeding conveying device is arranged at the unloading end of the film feeding assembly 20 and provides adsorption force for the film material passing through the film cutting assembly 30, and a section of cut film can be conveyed along with the film feeding conveying device, so that the film can be ensured to smoothly leave the film feeding assembly 20, and the problem that the film is rolled into the rear of the film feeding assembly 20 due to static electricity can be solved. The electric control device 50 adopts a frequency converter, a PLC (not shown) and an operation screen 51, and the operation screen 51 is electrically connected with the frequency converter, the PLC and a power part of the conveying device 10, the film feeding component 20, the film cutting component 30 and the film feeding conveying device. When the toast is conveyed to the unloading end by the conveying device 10, the film conveying device is triggered to convey the cut film to the unloading end, so that the film conveying device and the conveying device 10 are controlled to synchronously convey by the electric control device 50, the unloading end of the film conveying device is opposite to the unloading end of the conveying device 10, the film conveyed by the film conveying device just covers the toast surface to be pasted with the film, conveyed by the unloading end of the conveying device 10, and the toast product pasted with the film is conveyed forwards together, so that the film pasting action is completed, the film pasting machine can continuously work, the working efficiency is higher, and the film pasting speed per minute is up to 80 to 100 sheets.

In the present embodiment, the film feeding and conveying device employs a negative pressure film feeding and conveying device 40 to adsorb the film material. As shown in fig. 3 to 5, the negative pressure film feeding and conveying device 40 includes a connecting bracket 41, a negative pressure mechanism 42 and a conveying belt mechanism 43 mounted on the connecting bracket 41, the negative pressure mechanism 42 includes a negative pressure frame 421 and a negative pressure generator (not shown), the negative pressure frame 421 and the negative pressure generator are both mounted on the connecting bracket 41, an air extraction interface 422 is arranged on the side surface of the negative pressure frame 421, and a negative pressure output end of the negative pressure generator is connected with the air extraction interface 422, so that the negative pressure output end is communicated with an inner cavity of the negative pressure frame 421, and a negative pressure environment can be formed in the negative pressure frame 421; the belt conveying mechanism 43 comprises a conveying power part and a conveying belt 431, the conveying power part comprises a driving device (not shown) and two tensioning rollers 432, the driving device can adopt a structure with driving rotation of a servo motor, a stepping motor, a direct current motor, a motor and the like, the driving device is arranged on the connecting support 41, the driving device is provided with a driving end, the two tensioning rollers 432 are rotatably arranged on the connecting support 41, the two tensioning rollers 432 are distributed on the two sides of the connecting support 41 along the conveying direction of the conveying belt 431, one tensioning roller 432 coaxially rotates with the driving end of the driving device, the coaxial rotation can be that the tensioning rollers 432 are directly connected with the driving end of the driving device, or the tensioning rollers 432 are indirectly connected with the driving end of the driving device through a coupler, the conveying belt 431 is sleeved and tensioned on the periphery of the two tensioning rollers, and the conveying belt 431 is in an inclined state. As shown in fig. 5, the surface of the transmission belt 431 is provided with a plurality of vent holes 433, the transmission belt 431 covers the surface of the frame opening of the negative pressure frame 421, and the negative pressure generator can provide adsorption force for the film material on the transmission belt 431 through the vent holes 433, so that the film material is transmitted along with the transmission belt 431. The plurality of vent holes 433 are uniformly distributed on the surface of the transport belt 431 to provide uniform adsorption force.

As shown in fig. 3 and 4, the negative pressure film feeding and conveying device 40 further includes a turning mechanism 44, and the connection bracket 41 is connected to a rotating end of the turning mechanism 44 to implement a function of turning the connection bracket 41. The turning mechanism 44 includes a fixed frame (not shown) and a rotating member 441, the rotating member 441 adopts a structure having a rotation function such as a servo motor, a stepping motor, a motor, etc., the rotating member 441 is mounted on the fixed frame, the rotating member 441 has a rotating end which is connected with the connecting bracket 41, the connecting bracket 41 is provided with a connecting shaft 411, and the rotating end of the rotating member 441 is connected with the connecting shaft 411 through a coupling 442 to drive the connecting bracket 41 to perform turning movement by using the rotating member 441.

In another embodiment, as shown in fig. 2 and 6, the automatic film sticking machine further includes a feeding assembly 60, a film passing assembly 70, a supporting side plate 90 and a height adjusting device 80, wherein the feeding assembly 60 is used for installing a film roll, the film passing assembly 70 is used for guiding and flattening a film material, and the feeding assembly 60, the film passing assembly 70, the film feeding assembly 20 and the film cutting assembly 30 are sequentially arranged along the conveying direction of the film material; the height adjusting device 80 is connected with the supporting side plate 90, the height adjusting device 80 comprises a power piece, a screw rod 81 in power connection with the power piece and a sliding block (not shown) in sliding connection with the screw rod 81, the screw rod 81 is vertically arranged, the supporting side plate 90 is fixedly connected with the sliding block, the film feeding component 20, the film passing component 70 and the film cutting component 30 are arranged on the supporting side plate 90, the power piece is connected with the screw rod 81 through a hand wheel 82 in the embodiment, the motor driving can be adopted in other embodiments, the screw rod 81 is driven to rotate through the hand wheel 82, and accordingly the supporting side plate 90 moves up and down along with the sliding block relative to the screw rod 81, and accordingly the height adjusting device 80 can adjust the height positions of the film feeding component 20, the film passing component 70 and the film cutting component 30 to adapt to film pasting procedures of toast products with different thicknesses.

As shown in fig. 2 and 7, the feeding assembly 60 includes a reel 61 mounted on a support side plate 90 and a locking member 62 for fixing the film roll, the film roll is sleeved on the reel 61, the locking member 62 includes a movable lock head, and the film roll can be quickly fixed and removed, so that the film roll can be quickly mounted and removed. The film passing assembly 70 comprises a plurality of rollers 71 arranged on the supporting side plate 90 and a limiting sleeve 72 sleeved on the rollers 71, wherein the rollers 71 are vertically arranged with the supporting side plate 90, and the film material is connected on the outer surfaces of the rollers 71 in a penetrating way and limited in axial position by the limiting sleeve 72 for guiding and limiting the leveling film material.

In this embodiment, referring to fig. 6, the film feeding device includes a driving roller 21, a driven roller 22 and a gap adjusting member (not shown), the driving roller 21 is driven by a power member, the driving roller 21 and the driven roller 22 are arranged side by side, the two are directly provided with a gap suitable for the film material to pass through, and the radial position of the driven roller 22 can be adjusted by the gap adjusting member to adjust the size of the gap between the driving roller 21 and the driven roller 22, so as to clamp or unclamp the film material.

Referring to fig. 8 to 10, the film cutting assembly 30 includes a base 31, a stationary knife 32, a linear moving member 35, a movable knife 34, and an elastic pressing member 33; the stationary knife 32 is mounted on the base 311; the linear moving member 35 has a moving end capable of moving in a direction approaching or separating from the fixed blade 32; the movable knife 34 is arranged at the moving end of the linear moving piece 35, the side surface of the movable knife 34 is integrally connected with the extending plate 36, the side surface of the extending plate 36 is coplanar with the side surface of the movable knife 34, the upper surface of the extending plate 36 abuts against the lower surface of the fixed knife 32, and when the moving end moves towards the fixed knife 32, the movable knife 34 is tangent to the fixed knife 32; the elastic pressing member 33 is mounted on the base 31, the elastic pressing member 33 abuts against the protruding plate 36, and the elastic pressing member 33 can generate pressing force against the protruding plate 36 toward the fixed blade 32, so that the protruding plate 36 is held against the fixed blade 32 when the elastic pressing member 33 abuts against the protruding plate 36. In this way, the extending plate 36 is arranged on the movable knife 34, the side surface of the extending plate 36 is coplanar with the side surface of the movable knife 34, the extending plate 36 is abutted against the fixed knife 32 by the aid of the extending plate 36, meanwhile, the extending plate 36 is extruded by the aid of the elastic extrusion piece 33, the extending plate 36 and the fixed knife 32 are always kept in an abutted state, and accordingly gaps between the fixed knife 32 and the movable knife 34 are reduced, and when the movable knife 34 is driven by the linear moving piece 35 to be tangent with the fixed knife 32, the effectiveness of cutting films between the movable knife 34 and the fixed knife 32 can be improved, and the service life of a film cutting assembly is prolonged.

The base 31 is in a plate shape, the base 31 is provided with an opening 311, a cutting position is formed between the fixed knife 32 and the movable knife 34, the opening 311 is opposite to the cutting position, so that a film stripping product can enter the cutting position between the fixed knife 32 and the movable knife 34 from the opening 311, and further the movable knife 34 is conveniently driven to be tangent to the fixed knife 32 through the linear moving piece 35, so that the film material is cut.

The linear moving member 35 comprises a moving frame 351 (i.e. a moving end), a driving member 352, a guiding member 353 and a transmission rod 354, wherein the moving frame 351 is in sliding fit with the base 31, the moving frame 351 can linearly move on the base 31 towards a direction close to or far away from the fixed knife 32, the movable knife 34 is arranged on the moving frame 351, the driving member 352 is arranged on a corresponding frame body and keeps a relatively fixed state with the base 31, the guiding member 353 is connected to the driving end of the driving member 352 and can be driven to rotate by the driving member 352, the guiding member 353 adopts an eccentric wheel, the eccentric wheel and the driving end of the driving member 352 coaxially rotate, one end of the transmission rod 354 is hinged with the side face of the eccentric wheel, a space exists between a hinge point between the transmission rod 354 and the eccentric wheel and the center of the circle, and the other end of the transmission rod 354 is hinged with the side face of the moving frame 351. Therefore, the crank block structure is formed by the movable frame 351, the driving piece 352, the guide piece 353 and the transmission rod 354, so that the function of linearly moving the movable end (the movable frame 351) of the linear moving piece 35 under the driving action of the driving piece 352 is realized, and the quick cutting of the film material is realized.

In order to realize the sliding fit between the moving frame 351 and the base 31, the base 31 is provided with a sliding rail 312, the length direction of the sliding rail 312 is parallel to the moving direction of the moving end of the linear moving member 35, the moving frame 351 is provided with a sliding block 355, and the sliding block 355 is in sliding fit with the sliding rail 312.

In order to improve the stability of the extending plates 36 abutting against the fixed knife 32, the number of the extending plates 36 is two, the two extending plates 36 are distributed at two ends of the length direction of the movable knife 34, the two extending plates 36 respectively correspond to two ends of the length direction of the fixed knife 32, and the upper surfaces of the two extending plates 36 of the movable knife 34 respectively abut against the lower surfaces of the two ends of the fixed knife 32.

The number of the elastic pressing members 33 is two, and the two elastic pressing members 33 are distributed at both ends of the fixed blade 32 in the length direction and respectively press the corresponding two projecting plates 36. The elastic pressing member 33 includes a spring 331, a movable frame 332, and a pressing roller 38; one end of the spring 331 is arranged on the base 31, the movable frame 332 is L-shaped, one end of the movable frame 332 is hinged with the base 31, the other end of the movable frame 332 is connected with the end of the spring 331 far away from the base 31, the L-shaped opening 311 of the movable frame 332 faces the spring 331, the corner of the movable frame 332 is integrally connected with the pressing block 37, the pressing block 37 faces the fixed knife 32 and is close to the extending plate 36, the pressing roller 38 is rotatably arranged on the side face of the pressing block 37, and under the elastic force of the spring 331, the pressing block 37 of the movable frame 332 is abutted against the extending plate 36 through the wheel face of the pressing roller 38, so that the extending plate 36 is abutted against the side face of the fixed knife 32. Therefore, by providing the L-shaped movable frame 332, under the action of the elastic force of the spring 331, the movable frame 332 turns about the hinge point with the base 31 in a direction away from the spring 331, and drives the pressing roller 38 to abut against the extending plate 36, so that the extending plate 36 abuts against the side surface of the fixed knife 32, thereby realizing the function of reducing the gap between the fixed knife 32 and the movable knife 34.

It will be appreciated that by pressing the protruding plate 36 towards the stationary blade 32 by the pressing block 37 of the movable frame 332, the upper surface of the protruding plate 36 can be made to abut against the lower surface of the stationary blade 32, and the function of the gap between the stationary blade 32 and the movable blade 34 can be reduced because the upper surface of the protruding plate 36 is coplanar with the upper surface of the movable blade 34.

Similarly, the movable frame 332 may be hinged to the base 31, and the spring 331 may be mounted on the base 31 at one end and abut against one side of the movable frame 332 at the other end, so that the movable frame 332 can abut against the protruding plate 36 at the other side by the elastic force of the spring 331. Since the upper surface of the protruding plate 36 is coplanar with the upper surface of the movable blade 34, the function of the gap between the fixed blade 32 and the movable blade 34 can be reduced.

In summary, the film feeding and conveying device is arranged, so that the cut film can be conveyed along with the film feeding and conveying device, the film can be ensured to leave the film feeding assembly smoothly, the problem that the film is rolled into a roller can be solved, meanwhile, the film feeding and conveying device is controlled by the electric control device 50 to synchronously convey the film, the discharging end of the film feeding and conveying device is opposite to the discharging end of the conveying device 10, the film conveyed by the film feeding and conveying device is ensured to be just covered on the toast surface conveyed by the discharging end of the conveying device 10, and the film-pasted product is conveyed forwards continuously together to complete the film pasting action, so that the film pasting device can work continuously to improve the working efficiency.

In another embodiment, as shown in fig. 11, a first tensioning and deviation adjusting bolt 101 is installed on a main frame 100 below the conveying device 10, and is used for adjusting tightness of the conveying belt 13, locking the conveying belt when rotating leftwards, loosening the conveying belt when rotating rightwards, and further comprises a pressing switch, wherein the pressing switch receives power when being in a pressing state, and generates an electric signal, and the electric signal is transmitted to the PLC controller; the pressing switch comprises a pressing head 103 and a pressing seat 102, the pressing head 103 is matched with the pressing seat 102, the pressing head 103 is in sliding connection with the pressing seat 102, the pressing seat 102 is in sliding connection with the main frame 10, and a locking bolt is further arranged on the pressing seat 102 and used for enabling the pressing seat to be fixed with the main frame when the pressing seat slides to a designated position; the pressing head 103 is abutted with the bolt head of the first tensioning deviation adjusting bolt 101; after the transfer of the conveyor belt is completed, the laminator is normally started, in the process of toasting and conveying, because the machine is driven by a motor, some vibration can be generated, the first tensioning deviation adjusting bolt 101 is possibly loosened, and the loosening process is not well monitored, so that the pressing switch is introduced in the implementation, after the deviation adjustment is completed, the pressing seat is adjusted to the position after the adjustment of the first tensioning deviation adjusting bolt, the pressing head is just abutted to the bolt head of the first tensioning deviation adjusting bolt 101, the pressing seat 102 is locked, in the process of moving the laminator, if the first tensioning deviation adjusting bolt is loosened, the pressing head 103 is pressed, an electric signal is generated at the moment and is received by the PLC, an alarm is given to operators, and the problem of the conveyor belt is prevented from being found after an accident occurs in the production process.

The foregoing is merely an embodiment of the present invention, the present invention is not limited to the field of this embodiment, and the specific structures and features well known in the schemes are not described in any way herein, so that those skilled in the art will know all the prior art in the field before the application date or priority date, and will have the capability of applying the conventional experimental means before the date, and those skilled in the art may, in light of the teaching of this application, complete and implement this scheme in combination with their own capabilities, and some typical known structures or known methods should not be an obstacle for those skilled in the art to practice this application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. A toast film-coating method, comprising the steps of:

s1: cutting toast according to the setting and filling;

s3: packaging the toast with the film;

2. A toast film-coating method according to claim 1, wherein: the negative pressure film conveying device comprises a connecting bracket, a negative pressure mechanism and a conveying belt mechanism, wherein the negative pressure mechanism and the conveying belt mechanism are arranged on the connecting bracket; the negative pressure mechanism comprises a negative pressure frame and a negative pressure generator, the negative pressure frame and the negative pressure generator are both arranged on the connecting bracket, and the negative pressure output end of the negative pressure generator is connected with the negative pressure frame, so that a negative pressure environment can be formed in the negative pressure frame; the conveying belt mechanism comprises a conveying power piece and a conveying belt, the conveying power piece is arranged on the connecting bracket, the conveying belt is in power connection with a power output end of the conveying power piece, a plurality of vent holes are formed in the surface of the conveying belt, the conveying belt covers the surface of a frame opening of the negative pressure frame, and the negative pressure generator can provide adsorption force for film materials on the conveying belt through the vent holes so that the film materials can be conveyed along with the conveying belt; the negative pressure film conveying device further comprises a second tensioning deviation adjusting bolt used for adjusting the tightness of the conveying belt.

3. A toast film-coating method according to claim 2, wherein: the automatic film sticking machine comprises a feeding assembly for installing a film material roll and a film passing assembly for guiding and flattening film materials, and the feeding assembly, the film passing assembly, the film feeding assembly and the film cutting assembly are sequentially arranged along the conveying direction of the film materials; the membrane cutting device also comprises a supporting side plate and a height adjusting device which is connected with the supporting side plate and used for adjusting the height of the membrane feeding assembly, the membrane passing assembly and the membrane cutting assembly.

4. A toast film-coating method according to claim 3, wherein: the feeding assembly comprises a scroll arranged on the supporting side plate and a locking piece for fixing the film material roll; the film passing assembly comprises a plurality of rollers arranged on the supporting side plates and limiting sleeves sleeved on the rollers, and the film material is connected to the outer surfaces of the rollers in a penetrating mode and limited in axial positions by the limiting sleeves.

5. A toast film-coating method according to claim 4, wherein: the automatic film sticking machine comprises a main frame, and the conveying device, the film feeding assembly, the film cutting assembly, the film feeding conveying device and the electric control device are arranged on the main frame;

6. A toast film-coating method according to claim 5, wherein: the elastic extrusion piece comprises a spring and a movable frame, the movable frame is hinged on the base, one end of the spring is installed on the base, the other end of the spring is abutted against one side of the movable frame, and the movable frame can be abutted against the other side of the extending plate under the action of the elastic force of the spring;

7. A toast film-coating method according to claim 1, wherein: the linear moving part comprises a moving frame, a driving part, a guiding part and a transmission rod, wherein the moving frame is a moving end, the moving frame is in sliding fit with the base, the movable knife is installed on the moving frame, the driving part is relatively fixed with the base, the driving end of the driving part is connected with the guiding part, one end of the transmission rod is hinged to the position, away from the driving part, of the guiding part, the other end of the transmission rod is hinged to the moving frame, and the driving part, the guiding part, the transmission rod and the moving frame form a crank sliding block structure to drive the moving frame to linearly move.

8. A toast film-coating method according to claim 7, wherein: the guide piece adopts an eccentric wheel, the eccentric wheel and the driving end of the driving piece coaxially rotate, and one end of the transmission rod is hinged with the side face of the eccentric wheel;

9. A toast film-coating method according to claim 8, wherein: the conveying device comprises a power piece, a driving shaft, a driven shaft and a conveying belt sleeved on the peripheries of the driving shaft and the driven shaft, and the power piece is in power connection with the driving shaft; the conveying device further comprises a first tensioning deviation adjusting bolt used for adjusting the conveying belt;

10. A toast film-coating method according to claim 9, wherein: before the automatic film sticking machine is started, the automatic film sticking machine is detected, and the detection method is as follows:

s11: removing the abnormality of the conveying device:

s12: removing abnormality of the negative pressure film feeding conveyor belt:

s121: the conveyor belt does not run: checking whether the right input parameters of the corresponding film drawing speed items of the operation screen are correct or not, checking whether the conveying device is blocked by foreign matters or not, and checking whether the tension of the conveying belt is overlarge or not;