A double-layer film laminating mechanism for cotton packaging film

Abstract

The present invention discloses a double-layer film laminating mechanism for cotton packaging film, which comprises a frame (6). A laminating device (2-3) and a bottom lining film cutting device are arranged on the frame (6). The laminating device (2-3) includes a film pressing block (2-8) and a bottom lining film negative pressure suction table (2-10). The film pressing block (2-8) and the bottom lining film negative pressure suction table (2-10) move up and down within the region defined by the track through their respective lifting mechanisms. The bottom lining film negative pressure suction table (2-10) is a cavity with a hollow interior. The upper surface of the bottom lining film negative pressure suction table (2-10) is provided with suction holes A (2-15). The bottom lining film (1-1) can be adsorbed on the upper surface of the bottom lining film negative pressure suction table (2-10). When the film pressing block (2-8) moves downward, it can press on the upper surface of the bottom lining film negative pressure suction table (2-10) to laminate the bottom lining film and the mucosal film. The bottom lining film cutting device includes a bottom lining cutting knife (2-13). When the bottom lining cutting knife (2-13) moves up and down, it can only cut the bottom lining film (1-1).

Description

Technical Field

[0001] The present invention relates to a cotton packing film production device, in particular to a double-layer film laminating mechanism for cotton packing film for laminating two films with different characteristics together. Background Art

[0002] With the process of mechanization, the cost of manual cotton picking is getting higher and higher, and machine-picked cotton gradually replaces manual picking, and cotton pickers are more and more widely used. Machine-picked cotton by cotton pickers needs to use packing film to pack the picked cotton.

[0003] At present, most cotton pickers, packing films and related supporting products are monopolized by foreign companies. For example, packing films are consumables, and it is costly to use the original factory of cotton pickers. Therefore, the inventor has developed an alternative product that can replace the original factory supporting packing film. That is, a packing film for an automatic packing machine applied for in Application No.: 201922448048X. At the same time, in order to mass-produce the packing film, reduce the dependence on the original factory supporting of cotton pickers, reduce the procurement cost of packing film for farmers, and reduce the cotton planting cost, the inventor has developed a production device for producing the packing film, that is, a production device for completing the compounding and splicing of cotton packing film at one time.

[0004] When producing the packing film, it is necessary to laminate two films with different properties together, and then cut them, and connect them with adhesive tape at the cut seam to form a continuous and separable packing film. The two different films are a layer of adhesive film and a layer of bottom lining film. The bottom lining film needs to be laminated on the adhesive film first to form a composite film, and then the bottom lining film is cut open so that the bottom lining film attached under the adhesive film is intermittent. Therefore, a simple and convenient-to-use laminating device is required in the production device, that is, a double-layer film laminating mechanism for cotton packing film. Summary of the Invention

[0005] The present invention discloses a cotton packing film compounding and splicing device.

[0006] The present invention provides the following technical solutions:

[0007] A cotton packing film compounding and splicing device, including a frame (6), characterized in that: a feeding mechanism (1), a double-layer film compounding and laminating mechanism (2), a double-layer film composite film splicing mechanism (3) and a finished film winding mechanism are successively arranged on the frame (6).

[0008] The double-layer film compounding and laminating mechanism can laminate two different layers of films together, and one of the films is intermittently laminated on the other film. The double-layer film composite film splicing mechanism can cut the continuous film and press and fold adhesive tape and bond adhesive tape at the cut seam. The cut films are connected by the folded adhesive tape and the bond adhesive tape, and can also be separated. Finally, the finished film is wound by the finished film winding mechanism;

[0009] The specific structure is as follows:

[0010] The feeding mechanism includes: there are two groups of film releasing rollers (1-3). A base lining film roll is placed on one group of film releasing rollers (1-3), and an adhesive film roll is placed on the other group of film releasing rollers (1-3). By rotating the film releasing rollers (1-3), two different films, namely the base lining film () and the adhesive film (), enter the double-layer film composite laminating mechanism (2).

[0011] The double-layer film composite laminating mechanism at least includes: a laminating device (2-3) and a base lining film cutting device.

[0012] The laminating device (2-3) includes a film pressing block moving track (2-9). The film pressing block moving track (2-9) is fixedly arranged on the frame (6). A film pressing block (2-8) and a base lining film negative pressure suction table (2-10) that can move up and down are arranged on the film pressing block moving track (2-9). The film pressing block (2-8) and the base lining film negative pressure suction table (2-10) move up and down within the track-defined area through their respective lifting mechanisms. That is, the film pressing block (2-8) is driven to move up and down by the pressing block lifting mechanism (2-5), and the base lining film negative pressure suction table (2-10) is driven to move up and down by the base lining film negative pressure suction table lifting mechanism (2-11).

[0013] The base lining film negative pressure suction table (2-10) is a cavity with a hollow interior. The upper surface of the base lining film negative pressure suction table (2-10) is provided with suction holes A (2-15). The suction holes A (2-15) communicate the inner cavity with the outside. An air suction pipe (5) can be connected to the base lining film negative pressure suction table (2-10) so that the base lining film (1-1) can be adsorbed on the upper surface of the base lining film negative pressure suction table (2-10). The film pressing block (2-8) is arranged above the base lining film negative pressure suction table (2-10). When the film pressing block (2-8) moves downward, it can press on the upper surface of the base lining film negative pressure suction table (2-10). The base lining film and the adhesive film are laminated on the upper surface of the base lining film negative pressure suction table (2-10) through the film pressing block (2-8) to achieve lamination.

[0014] The base lining film cutting device includes a base lining cutting knife (2-13) and a base lining film cutting knife lifting mechanism (2-14). The base lining film cutting knife lifting mechanism (2-14) is fixedly arranged on the frame (6). There is a freely movable movable end on the base lining film cutting knife lifting mechanism (2-14). The base lining cutting knife (2-13) is fixed to the movable end of the base lining film cutting knife lifting mechanism (2-14). The base lining film cutting device is arranged behind the laminating device (2-3). When the base lining cutting knife (2-13) performs lifting operation, it can only cut the base lining film (1-1).

[0015] Preferably, a moving track (2-12) for the bottom lining film cutter may be provided, and the bottom lining film cutter (2-13) can move on the moving track (2-12) for the bottom lining film cutter.

[0016] As an improvement, at least one of a film pressing roller A (2-1), a traction roller A (2-2), a film spreading roller A (2-6), and a tension detection roller A (2-4) may be provided at the front end of the laminating device (2-3).

[0017] At least one of a film pressing roller A (2-1), a traction roller A (2-2), a film spreading roller A (2-6), and a tension detection roller A (2-4) may also be provided at the rear end of the laminating device (2-3).

[0018] The film pressing roller A (2-1) is two opposing rollers arranged vertically. The surfaces of the two opposing rollers are in contact and rotate relative to each other, capable of applying pressure to the film passing through their contact surface, enabling different two layers of film to be laminated to each other, or making the passing film more unfolded.

[0019] The traction roller A (2-2) is a cylindrical body capable of rotating actively. The film is laminated on its surface to drive the film to move.

[0020] The film spreading roller A (2-6) is a cylindrical body with grooves inclined towards both ends or threads spiraling towards both sides on its surface. The film is laminated on its surface, capable of flattening the film towards both sides to avoid film wrinkles.

[0021] After the film is released from the raw material roll, the tension of the film needs to be detected, and a tension detection roller A (2-4) is provided for detecting the tension of the film.

[0022] The double-layer film composite film splicing mechanism includes: a moving track (3-7) for the composite film suction table, a traveling track (3-16) for the tape bonding device, and a track (6-8) for the tape cutter. The moving track (3-7) for the composite film suction table and the traveling track (3-16) for the tape bonding device are both fixed on the machine frame (6).

[0023] The moving track (3-7) for the composite film suction table and the track (6-8) for the tape cutter are arranged horizontally, that is, parallel to the traveling direction of the film.

[0024] The traveling track (3-16) for the tape bonding device is arranged vertically, that is, perpendicular to the traveling direction of the film.

[0025] A composite film suction table moving track (3-7) is provided with a composite film adsorption device capable of moving freely. The composite film adsorption device includes two composite film suction tables (3-17) and a suction table lifting mechanism (3-21). The composite film suction table (3-17) is a cavity with a hollow interior. The upper surface of the composite film suction table (3-17) is provided with air suction holes B (3-4), and the air suction holes B (3-4) connect the inner cavity with the outside. A negative pressure suction pipe (5) can be connected to the composite film suction table (3-17) so that the composite film can be adsorbed on the upper surfaces of the two composite film suction tables (3-17).

[0026] A slot (3-5) is provided between the two composite film suction tables (3-17). The slot (3-5) penetrates through the two composite film suction tables (3-17). A composite film cutting device is provided at the slot (3-5). The composite film cutting device includes a composite film cutter (3-13) and a composite film cutter track (3-15). The composite film cutter (3-13) moves up and down through the composite film cutter track (3-15). When the composite film is adsorbed on the upper surface of the composite film suction table (3-17), the composite film cutter () moves upward and can cut the composite film, and the cut composite film can still be adsorbed on the upper surface of the composite film suction table (3-17). The composite film adsorption device moves on the composite film suction table moving track (3-7) through a traveling mechanism (3-18).

[0027] That is, the composite film cutting device includes: a composite film cutter (3-13) and a composite film cutter lifting mechanism (3-15). The composite film cutter lifting mechanism (3-15) is fixedly arranged on a movable fixing frame (3-19). A freely movable movable end is provided on the composite film cutter lifting mechanism (3-15). The composite film cutter (3-13) is fixed to the movable end of the composite film cutter lifting mechanism (3-15). The composite film cutting device is arranged in the middle of the composite film adsorption device. When the composite film cutter (3-13) operates, it cuts the middle of the composite film adsorbed on the surfaces of the two suction tables (3-17).

[0028] On the walking track (3-16) of the tape bonding device, there is a movable slider (3-25) that can move freely. A tape bonding device is provided on the movable slider (3-25). The tape bonding device includes: a bonding tape mounting roller (3-12) capable of fixedly bonding the tape, a folding tape mounting roller (3-14) capable of fixedly folding the tape, an adjusting spring (3-22) capable of adjusting the pressure of the tape pressing roller, a crank (3-23), a tape unwinding duckbill (3-24), and a tape pressing roller (3-11). The tape pressing roller (3-11) can move horizontally on the surface of the composite film suction table (3-17). The horizontal movement is in a direction perpendicular to the movement direction of the composite film. Different tapes are respectively installed on the bonding tape mounting roller (3-12) and the folding tape mounting roller (3-14). The tape can bypass the tape unwinding duckbill (3-24) and the tape pressing roller (3-11) and adhere to the upper surface of the composite film adsorbed on the composite film suction table (3-17), that is, the tape unwinding duckbill (3-24) presses the tape and the tape pressing roller (3-11) tightly.

[0029] On the tape cutting knife track (6-8), there is a tape cutting knife holder (3-9) that can move freely on the tape cutting knife track (6-8). A tape cutting knife (3-10) is provided on the tape cutting knife holder (6-9). The tape cutting knife (3-10) can cut off the bonding tape and the folding tape.

[0030] After the tape cutting knife (3-10) cuts off the bonding tape and the folding tape, the tape unwinding duckbill (3-24) can press the tape on the tape pressing roller (3-11) to prevent the tape from wrinkling due to cutting.

[0031] As an improvement, a composite film trimming device can also be provided. The composite film trimming device includes: a composite film trimming knife movement track (3-26) and a composite film trimming knife (3-27). The composite film trimming knife movement track (3-26) is fixed on the machine frame (6). The composite film trimming knife (3-27) is fixed on the composite film trimming knife movement track (3-26). The composite film trimming knife (3-27) moves horizontally on the trimming knife movement track (3-26). The horizontal movement is in a direction perpendicular to the movement direction of the composite film.

[0032] The composite film trimming device reduces the connecting part of the composite film, that is, the width of the connecting part is smaller than the normal width of the composite film.

[0033] The finished film winding mechanism: includes a film winding roller (4-2). After the bottom lining film (1-1) and the adhesive film (1-2) are laminated into one film through the double-layer film lamination mechanism (2), they enter the double-layer composite film splicing mechanism (3) for slitting and splicing, and finally are wound on the film winding roller (4-2).

[0034] This application combines two films with different performance characteristics into a cotton packing film for use in cotton harvesting through a composite splicing device; it solves problems such as the compounding, splicing, edge trimming, and winding of the covering film (i.e., the bottom lining film) and the adhesive film during the production of the packing film, and bonds two packing films together by bonding with a "U"-shaped and flat tape, and repeats the above processes to continuously produce the cotton packing film into a film roll.

[0035] One film is coated in segments to be sticky, and two packing films are bonded together by bonding with a "U"-shaped tape, and the above process is repeated to continuously produce the cotton packing film into a film roll.

[0036] Through the continuous production of the composite splicing machine, two films with different characteristics are compounded together, and the two films are compounded and pasted through a vacuum suction table; the tension and position deviation of the film during the traction process are controlled by a tension adjustment and deviation correction device; the automatic bonding of a separable bonding joint can be realized through a tape bonding device; the separable bonding joint is ensured not to be opened during the traction of the packing film through the vacuum suction table and the sliding module.

[0037] 1. Place the rolled covering film and adhesive film on the lining film and mucous membrane film feeding mechanisms respectively through a lifting device; the respective film feeding motors unwind the rolled films. The adhesive film (mucous membrane) is tractioned by the traction mechanism on the upper part of the machine table, and the covering film (bottom lining film) is tractioned by the traction mechanism on the lower part. At the same time, the deviation correction device and tension control device on the respective film feeding mechanisms correct the deviation during the film traction process and adjust the tension of the film.

[0038] 2. The two films are tractioned into the composite adsorption mechanism by the traction mechanism. When the starting part of the covering film reaches the vacuum suction table, the film feeding mechanism and the traction device stop; at this time, the vacuum suction table adsorbs the starting part of the covering film through vacuum suction, and then the vacuum suction table drives the starting part of the covering film (bottom lining film) to move upward under the action of the lifting cylinder, attaches the starting part of the lining film to the adhesive film, and pastes the two films together through the composite pressing device; then the vacuum suction table removes the vacuum and passes compressed air, and the vacuum suction table moves downward under the action of the cylinder, and the covering film is blown up under the action of the compressed air to realize the separation of the vacuum suction table and the covering film; subsequently, the two films continue the film feeding and traction processes under the action of the film feeding mechanism and the traction mechanism, and the two films are completely compounded through the pair-roller traction device; when the compounding of the two films reaches the set length of the lining film, the vacuum suction table moves upward and passes vacuum to adsorb the covering film (bottom lining film), and then the lining film is cut off by the film cutting device, and the vacuum suction table drives the lining film to move downward. At this time, after the mucous membrane and the lining film are compounded, they continue to move under the action of the traction device to complete the film compounding process;

[0039] 3. The compounded film moves driven by the traction roller. When the length of the compound film reaches the set length of the whole film, the film feeding mechanism and the traction mechanism stop. Then, the two vacuum suction tables on the splicing machine move upward under the action of the lifting mechanism, contact the lower surface of the film and then apply vacuum. The two vacuum suction tables adsorb the compound film and the adhesive film respectively. Then, the cutting device cuts at the connection between the compound film and the adhesive film. Subsequently, the tape bonding mechanism moves downward, and the bonding mechanism bonds the cut part of the film together with the folded tape and the straight tape to form a separable bonding joint. The label printer on the bonding machine automatically pastes the QR code label onto the compound film. Then, the film feeding mechanism and the traction mechanism move, and the vacuum suction tables and the cutting device move driven by the sliding module. At this time, the edge trimming mechanism trims the packing film. When it moves to the film winding device, the sliding module stops. At the same time, the two vacuum suction tables remove the vacuum and apply compressed air. The two vacuum suction tables move downward under the action of the cylinder, and the packing film is blown up under the action of the compressed air to realize the separation of the vacuum suction tables from the packing film, completing the splicing process of the packing film. After the packing film is compounded and spliced, the film winding device winds up the packing film. When the production of the whole roll of film is completed, the lifting device lifts the rolled packing film from the film winding device and places it on the packaging table for packaging and warehousing.

[0040] The compound splicing device repeats the above process, thereby realizing the continuous production of the packing film and forming a rolled film, which is beneficial to the use of the cotton harvester.

[0041] 1. The compound bonding mechanism of two films bonds the two films together.

[0042] 2. The tape bonding mechanism realizes the unwinding and bonding of the tape.

[0043] 3. The packing film bonding mechanism completes the adsorption, cutting and splicing of the film.

[0044] 4. The film vacuum adsorption mechanism completes the vacuum adsorption and separation of the film.

[0045] The movement mechanism of the packing film module ensures the structure of the separable bonding joint. Description of the Drawings

[0046] Figure 1 is the front view structural schematic diagram of the whole machine of the present invention.

[0047] Figure 2 is the structural schematic diagram of the double-layer film compounding and laminating mechanism.

[0048] Figure 3 is the structural schematic diagram of the laminating device.

[0049] Figure 4 is the structural schematic diagram of the bottom lining film negative pressure suction table.

[0050] Figure 5It is a schematic structural diagram of a double-layer film composite film splicing mechanism.

[0051] Figure 6 It is a schematic structural diagram of a composite film splicing mechanism

[0052] Figure 7 It is a left-view structural diagram of a composite film splicing mechanism.

[0053] Figure 8 It is a schematic structural diagram of a composite film suction table.

[0054] Figure 9 It is a schematic structural diagram of part 7A in the figure.

[0055] Figure 10 It is a schematic structural diagram of the packing film produced by the present invention.

[0056] Figure 11 It is a schematic diagram of the process of winding the packing film into a roll.

[0057] As shown in the figure: 1 is a feeding mechanism, 1-1 is a bottom lining film, 1-2 is an adhesive film, 1-3 is a film releasing roller,

[0058] 2 is a double-layer film composite laminating mechanism, 2-1 is a film pressing roller, 2-2 is a traction roller A, 2-3 is a laminating device, 2-4 is a tension detection roller A, 2-5 is a pressing block lifting mechanism, 2-6 is a film spreading roller A, 2-8 is a film pressing block, 2-9 is a moving track of the film pressing block, 2-10 is a negative pressure suction table for the bottom lining film, 2-11 is a lifting mechanism for the negative pressure suction table of the bottom lining film, 2-12 is a moving track of the cutting knife for the bottom lining film, 2-13 is a cutting knife for the bottom lining film, 2-14 is a lifting mechanism for the cutting knife of the bottom lining film, 2-15 is an air suction hole A,

[0059] 3 is a double-layer film composite film splicing mechanism, 3-1 is a tension detection roller B, 3-2 is a traction roller B, 3-3 is a film spreading roller B, 3-4 is an air suction hole B, 3-5 is a through hole, 3-6 is a composite film splicing mechanism, 3-7 is a moving track of the composite film suction table, 3-8 is a tape cutting knife track, 3-9 is a tape cutting knife holder, 3-10 is a tape cutting knife, 3-11 is a tape pressing roller, 3-12 is an adhesive tape mounting roller, 3-13 is a composite film cutting knife, 3-14 is a folding tape mounting roller, 3-15 is a moving track of the composite film cutting knife, 3-16 is a walking track of the tape bonding device, 3-17 is a composite film suction table, 3-18 is a walking mechanism, 3-19 is a movable fixing frame, 3-21 is a suction table lifting mechanism, 3-22 is a spring, 3-23 is a crank, 3-24 is a tape unwinding duckbill, 3-25 is a moving slider, 3-26 is a moving track of the edge trimming knife, 3-27 is an edge trimming knife, 3-28 is a folding tape, 3-29 is an adhesive tape, 3-30 is an adhesive layer, 3-31 is a separable layer,

[0060] 4 is the finished film winding mechanism, 4-1 is the composite film roll, and 4-2 is the film winding roller.

[0061] 5 is the suction pipe, and 6 is the frame. Detailed implementation mode

[0062] The preferred implementation mode of the present invention will be described in detail below.

[0063] Example 1: Refer to Figure 1 , which is the structural schematic diagram of Example 1 of the present invention.

[0064] A cotton packing film composite splicing device includes a feeding mechanism 1, a double-layer film composite laminating mechanism 2, a double-layer film composite film splicing mechanism 3, and a finished film winding mechanism.

[0065] The feeding mechanism includes: a frame 6, on which two groups of film unwinding rollers (1-3) are provided. A bottom lining film roll is placed on one group of film unwinding rollers (1-3), and an adhesive film roll is placed on the other group of film unwinding rollers (1-3). By rotating the film unwinding rollers (1-3), two different films, namely the bottom lining film and the adhesive film, enter the double-layer film composite laminating mechanism (2).

[0066] The double-layer film composite laminating mechanism includes: a frame 6, on which a laminating device 2-3 and a bottom lining film cutting device are provided.

[0067] The laminating device 2-3 includes a film pressing block moving track 2-9, which is fixedly arranged on the frame 6. On the film pressing block moving track 2-9, there is a film pressing block 2-8 that can move up and down and a bottom lining film negative pressure suction table 2-10. The film pressing block 2-8 and the bottom lining film negative pressure suction table 2-10 move up and down within the track-defined area through their respective lifting mechanisms, that is, the film pressing block 2-8 is driven by a pressing block lifting mechanism 2-5 to complete the up and down movement, and the bottom lining film negative pressure suction table 2-10 is driven by a bottom lining film negative pressure suction table lifting mechanism 2-11 to complete the up and down movement.

[0068] The bottom lining film negative pressure suction table 2-10 is a cavity with a hollow interior. The upper surface of the bottom lining film negative pressure suction table 2-10 is provided with suction holes A2-15, and the suction holes A2-15 connect the inner cavity with the outside. An air suction pipe 5 can be connected to the bottom lining film negative pressure suction table 2-10, so that the bottom lining film 1-1 can be adsorbed on the upper surface of the bottom lining film negative pressure suction table 2-10. The film pressing block 2-8 is arranged above the bottom lining film negative pressure suction table 2-10, and when the film pressing block 2-8 moves downward, it can press on the upper surface of the bottom lining film negative pressure suction table 2-10. The bottom lining film and the adhesive film are laminated on the upper surface of the bottom lining film negative pressure suction table 2-10 through the film pressing block 2-8 to achieve lamination.

[0069] The bottom lining film cutting device includes a bottom lining cutting knife 2-13 and a lifting mechanism 2-14 for the bottom lining film cutting knife. The lifting mechanism 2-14 for the bottom lining film cutting knife is fixedly arranged on the frame 6. There is a freely movable end on the lifting mechanism 2-14 for the bottom lining film cutting knife. The bottom lining cutting knife 2-13 is fixed to the movable end of the lifting mechanism 2-14 for the bottom lining film cutting knife. The bottom lining film cutting device is arranged behind the laminating device 2-3. When the bottom lining cutting knife 2-13 moves up and down, it can only cut the bottom lining film 1-1;

[0070] Preferably, a moving track 2-12 for the bottom lining film cutting knife can be provided, and the bottom lining cutting knife 2-13 can move on the moving track 2-12 for the bottom lining film cutting knife.

[0071] As an improvement, at least one of a film pressing roller A2-1, a traction roller A2-2, a film spreading roller A2-6, and a tension detecting roller A2-4 can be provided at the front end of the laminating device 2-3,

[0072] At least one of a film pressing roller A2-1, a traction roller A2-2, a film spreading roller A2-6, and a tension detecting roller A2-4 can also be provided at the rear end of the laminating device 2-3,

[0073] The film pressing roller A2-1 is two opposing rollers arranged vertically. The surfaces of the two opposing rollers are in contact and rotate relative to each other, and can apply pressure to the film passing through their contact surface, enabling different two layers of film to be laminated to each other, or making the passing film more unfolded,

[0074] The traction roller A2-2 is a columnar body and can rotate actively. The film is laminated on its surface to drive the film to move. The film spreading roller A2-6 is a columnar body, and its surface is provided with grooves inclined towards both ends, or threads spiraling towards both sides. The film is attached to its surface, and can flatten the film towards both sides to avoid film wrinkles,

[0075] After the film is released from the raw material roll, the tension of the film needs to be detected, and the tension detecting roller A2-4 is provided for detecting the tension of the film.

[0076] The double-layer film composite film splicing mechanism includes: a frame 6. On the frame 6, there are a moving track 3-7 for the composite film suction table, a walking track 3-16 for the tape bonding device, and a track 6-8 for the tape cutting knife. Both the moving track 3-7 for the composite film suction table and the walking track 3-16 for the tape bonding device are fixedly arranged on the frame 6,

[0077] The moving track 3-7 for the composite film suction table and the track 6-8 for the tape cutting knife are arranged horizontally, that is, parallel to the walking direction of the film,

[0078] The walking track 3-16 for the tape bonding device is arranged vertically, that is, perpendicular to the walking direction of the film,

[0079] A composite film suction table moving track 3-7 is provided with a composite film adsorption device capable of moving freely. The composite film adsorption device includes two composite film suction tables 3-17 and a suction table lifting mechanism 3-21. The composite film suction table 3-17 is a cavity with a hollow interior. The upper surface of the composite film suction table 3-17 is provided with suction holes B3-4, and the suction holes B3-4 communicate the inner cavity with the outside. A negative pressure suction pipe 5 can be connected to the composite film suction table 3-17, so that the composite film can be adsorbed on the upper surfaces of the two composite film suction tables 3-17.

[0080] A slot 3-5 is provided between the two composite film suction tables 3-17. The slot 3-5 penetrates through the two composite film suction tables 3-17. A composite film cutting device is provided at the slot 3-5. The composite film cutting device includes a composite film cutter 3-13 and a composite film cutter track 3-15. The composite film cutter 3-13 moves up and down through the composite film cutter track 3-15. When the composite film is adsorbed on the upper surface of the composite film suction table 3-17, the composite film cutter moves upward and can cut the composite film, and the cut composite film can still be adsorbed on the upper surface of the composite film suction table 3-17. The composite film adsorption device moves on the composite film suction table moving track 3-7 through a traveling mechanism 3-18.

[0081] That is, the composite film cutting device includes: a composite film cutter 3-13 and a composite film cutter lifting mechanism 3-15. The composite film cutter lifting mechanism 3-15 is fixedly arranged on a movable fixing frame 3-19. A freely movable movable end is provided on the composite film cutter lifting mechanism 3-15. The composite film cutter 3-13 is fixed to the movable end of the composite film cutter lifting mechanism 3-15. The composite film cutting device is arranged in the middle of the composite film adsorption device. When the composite film cutter 3-13 operates, it cuts the middle of the composite film adsorbed on the surfaces of the two suction tables 3-17.

[0082] A movable slider 3-25 capable of moving freely is provided on a tape bonding device traveling track 3-16. A tape bonding device is provided on the movable slider 3-25. The tape bonding device includes: a bonding tape mounting roller 3-12 capable of fixedly bonding a tape, a folding tape mounting roller 3-14 capable of fixedly folding a tape, an adjusting spring 3-22 capable of adjusting the pressure of a tape pressing roller, a crank 3-23, a tape unwinding duckbill 3-24, and a tape pressing roller 3-11. The tape pressing roller 3-11 can move horizontally on the surface of the composite film suction table 3-17. The horizontal movement is a direction perpendicular to the movement direction of the composite film. Different tapes are respectively installed on the bonding tape mounting roller 3-12 and the folding tape mounting roller 3-14. The tape can bypass the tape unwinding duckbill 3-24 and the tape pressing roller 3-11 and fit on the upper surface of the composite film adsorbed on the composite film suction table 3-17, that is, the tape unwinding duckbill 3-24 presses the tape and the tape pressing roller 3-11 tightly.

[0083] A tape cutter holder 3-9 capable of freely moving on the tape cutter track 6-8 is provided on the tape cutter track 6-8. A tape cutter 3-10 is provided on the tape cutter holder 6-9, and the tape cutter 3-10 can cut off the adhesive tape and the folded tape.

[0084] After the tape cutter 3-10 cuts off the adhesive tape and the folded tape, the tape unwinding duckbill 3-24 can press the tape against the pressure tape roller 3-11 to prevent the tape from wrinkling due to cutting.

[0085] As an improvement, a composite film trimming device can also be provided. The composite film trimming device includes: a composite film trimming knife movement track 3-26 and a composite film trimming knife 3-27. The composite film trimming knife movement track 3-26 is fixed on the frame 6, and the composite film trimming knife 3-27 is fixed on the composite film trimming knife movement track 3-26. The composite film trimming knife 3-27 moves horizontally on the trimming knife movement track 3-26, and the horizontal movement is in a direction perpendicular to the movement direction of the composite film.

[0086] The composite film trimming device reduces the connecting part of the composite film, that is, the width of the connecting part is smaller than the normal width of the composite film.

[0087] The finished film winding mechanism: includes a film winding roller 4-2. After the bottom lining film 1-1 and the adhesive film 1-2 are laminated into one film through the double-layer film lamination mechanism (2), they enter the double-layer film composite film splicing mechanism 3 for slitting and splicing, and finally are wound on the film winding roller 4-2.

[0088] The actual working process is as follows:

[0089] 1. Place the bottom lining film 1-1 and the adhesive film 1-2 on their respective film unwinding rollers 1-3 respectively, and feed the bottom lining film 1-1 and the adhesive film 1-2 into the double-layer film lamination mechanism 2. At the same time, pass the film around the pressure film roller A2-1, the traction roller A2-2, the film spreading roller A2-6 and the tension detection roller A2-4. The film moves by the rotation of the above-mentioned rollers.

[0090] 2. Adsorb the bottom lining film 1-1 on the bottom lining film negative pressure suction table 2-10. The adhesive film 1-2 continues to move through the pressure film roller A2-1 and moves towards the double-layer film composite film splicing mechanism 3. When the moving distance of the adhesive film 1-2 reaches the specified length, stop moving.

[0091] 3. Fit the pressure film pressing block 2-8 and the bottom lining film negative pressure suction table 2-10 together to laminate the adhesive film 1-2 and the bottom lining film 1-1 into a composite film. Then, the pressure film pressing block 2-8 and the bottom lining film negative pressure suction table 2-10 are separated. At the same time, the bottom lining film negative pressure suction table 2-10 releases the bottom lining film 1-1 and continues to move the composite film.

[0092] 4. When the length of the composite film reaches the specified requirement, stop moving. The bottom lining film negative pressure suction table 2-10 adsorbs the bottom lining film 1-1. The bottom lining film cutter 2-13 moves upward to cut the bottom lining film 1-1, and only cuts the bottom lining film 1-1. Then continue to move the mucosal film 1-2;

[0093] 5. Feed the composite film into the double-layer film composite film splicing mechanism 3. Adsorb the composite film part and the single-layer mucosal film 1-2 on the composite film suction table 3-17, that is, the composite film part is adsorbed on the front suction table, and the single-layer mucosal film is adsorbed on the rear suction table. The joint of the composite film and the single-layer film behind stays at the composite film cutter 3-13. After adsorption, move the composite film cutter 3-13 upward to cut the joint. The adhesive tape and the folding tape above the composite film suction table 3-17 are respectively pasted on the upper surface, that is, the folding tape is pasted on the single-layer mucosal film, and the adhesive tape is pasted on the folding tape and the composite film part. Reconnect the cut film through the adhesive tape. Then move the movable fixing frame 3-19 at the same speed as the film movement speed to wind the film on the winding mechanism.

[0094] 6. Reciprocate in sequence to realize different two-layer film composite operations and splicing operations, and realize continuous production.

[0095] The above are only the preferred embodiments of the present invention / invention. It should be noted that for those of ordinary skill in the art, without departing from the creative concept of the present invention, several changes and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A double - layer film laminating mechanism for cotton packaging film, comprising a frame (6). Characterized in that: A laminating device (2 - 3) and a bottom - lining film cutting device are provided on the frame (6). The laminating device (2 - 3) includes a film - pressing block moving track (2 - 9), and the film - pressing block moving track (2 - 9) is fixedly arranged on the frame (6). A film - pressing block (2 - 8) and a bottom - lining film negative - pressure suction table (2 - 10) capable of moving up and down are provided on the film - pressing block moving track (2 - 9). The film - pressing block (2 - 8) and the bottom - lining film negative - pressure suction table (2 - 10) move up and down within the track - defined area through their respective lifting mechanisms. That is, the film - pressing block (2 - 8) is driven to move up and down by a block - lifting mechanism (2 - 5), and the bottom - lining film negative - pressure suction table (2 - 10) is driven to move up and down by a bottom - lining film negative - pressure suction table lifting mechanism (2 - 11). The bottom - lining film negative - pressure suction table (2 - 10) is a cavity with a hollow interior. The upper surface of the bottom - lining film negative - pressure suction table (2 - 10) is provided with suction holes A (2 - 15), and the suction holes A (2 - 15) communicate the inner cavity with the outside. An air suction pipe (5) can be connected to the bottom - lining film negative - pressure suction table (2 - 10) so that the bottom - lining film (1 - 1) can be adsorbed on the upper surface of the bottom - lining film negative - pressure suction table (2 - 10). The film - pressing block (2 - 8) is arranged above the bottom - lining film negative - pressure suction table (2 - 10). When the film - pressing block (2 - 8) moves downward, it can press on the upper surface of the bottom - lining film negative - pressure suction table (2 - 10). The bottom - lining film and the adhesive film are laminated on the upper surface of the bottom - lining film negative - pressure suction table (2 - 10) through the film - pressing block (2 - 8) to achieve lamination. The bottom - lining film cutting device includes a bottom - lining cutting knife (2 - 13) and a bottom - lining film cutter lifting mechanism (2 - 14). The bottom - lining film cutter lifting mechanism (2 - 14) is fixedly arranged on the frame (6). A free - moving movable end is provided on the bottom - lining film cutter lifting mechanism (2 - 14). The bottom - lining cutting knife (2 - 13) is fixed to the movable end of the bottom - lining film cutter lifting mechanism (2 - 14). The bottom - lining film cutting device is arranged behind the laminating device (2 - 3). When the bottom - lining cutting knife (2 - 13) performs lifting operation, it can only cut the bottom - lining film (1 - 1).

2. The double - layer film laminating mechanism for cotton packaging film according to claim 1, Characterized in that: A bottom - lining film cutter moving track (2 - 12) is provided, and the bottom - lining cutting knife (2 - 13) can move on the bottom - lining film cutter moving track (2 - 12).

3. The double - layer film laminating mechanism for cotton packaging film according to claim 1, Characterized in that: At least one of a film - pressing roller A (2 - 1), a traction roller A (2 - 2), a film - spreading roller A (2 - 6), and a tension - detecting roller A (2 - 4) is provided at the front end of the laminating device (2 - 3). And / or, at least one of a film - pressing roller A (2 - 1), a traction roller A (2 - 2), a film - spreading roller A (2 - 6), and a tension - detecting roller A (2 - 4) is provided at the rear end of the laminating device (2 - 3).

Images