Corrugated board film laminating machine

Abstract

The invention relates to the technical field of paperboard film laminating, in particular to a corrugated paperboard film laminating machine which comprises a film laminating machine body, a discharging channel on the film laminating machine body and a re-pressing part arranged on the film laminating machine body and the discharging channel. The corrugated board film laminating machine comprises a film laminating machine main body, a discharging channel arranged on the film laminating machine main body, a stacking repressing device arranged on the side face of the film laminating machine main body and close to the tail end of the discharging channel, and a flattening mechanism arranged on the film laminating machine main body and overlapped on an external film. Therefore, it is ensured that the film and the surface of the corrugated board are completely attached, the attaching firmness of the film and the surface of the corrugated board is greatly improved, the problems of edge warping or separation and the like are effectively prevented, the durability of the film is improved, meanwhile, the possibility of defects such as wrinkles and bubbles in the film coating process can be effectively reduced, and the stability of the film coating quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of paperboard laminating, and in particular to a corrugated paperboard laminating machine. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which consists of at least one layer of corrugated core paper and one layer of cardboard. It has high mechanical strength and can withstand collisions and falls during transportation. It is mainly used to make cartons, cardboard sandwiches and other packaging materials for fragile goods. However, ordinary corrugated cardboard has deficiencies in moisture and water resistance, which limits its scope of use to a certain extent. In order to improve the performance of corrugated cardboard, laminating technology has been introduced into the production process of corrugated cardboard. Laminating is to cover the surface of the cardboard with a layer of plastic film. The performance of the corrugated cardboard after laminating has been significantly improved. Laminating can effectively block moisture and moisture, protect the goods in the package from the damage of the humid environment, and increase the wear resistance of the cardboard, making it more resistant to wear during transportation and storage. It can also improve the aesthetics of the cardboard, making its appearance more beautiful and enhancing the overall image of the product.

[0003] Laminated corrugated cardboard is widely used in various packaging that needs to be moisture-proof and waterproof due to its excellent performance. The lamination of corrugated cardboard needs to be done by a laminating machine, but there are some shortcomings in the process of laminating corrugated cardboard: 1. Existing laminating machines generally use a simple roller pressing method to press the film and cardboard together. The pressing and reinforcement time is very short, and the pressure distribution is uneven. Especially when there are depressions in some areas on the corrugated cardboard, it is difficult to ensure that the film and the surface of the corrugated cardboard are completely in contact. In particular, problems such as loose contact and warping are prone to occur at the edges and concave and convex parts of the cardboard, which greatly affects the durability of the lamination.

[0004] 2. During lamination, the rolled film is attached to the corrugated paper by loosening it through the drive of the rollers. However, after long-term use, the movement accuracy between the rollers is prone to decrease, resulting in unstable tension of the film. Therefore, wrinkles, bubbles and other defects are very likely to occur during lamination, affecting the lamination quality. Summary of the invention

[0005] The purpose of the present invention is to provide a corrugated board laminating machine to solve the above problems.

[0006] In order to achieve the above-mentioned object, the present invention provides a corrugated board laminating machine, comprising: a laminating machine body and a discharge channel on the laminating machine body, a re-pressing part arranged on the laminating machine body and the discharge channel, a stacking re-pressing device arranged on the side of the laminating machine body and close to the end of the discharge channel, and a spreading mechanism arranged on the laminating machine body and resting on the external film, wherein: The re-pressing unit can throw the film-coated corrugated paperboards into the stacking and re-pressing device in a flowing manner along the discharge channel, so that the corrugated paperboards are stacked in the stacking and re-pressing device in sequence, and the stacking and re-pressing device can press down the stacked corrugated paperboards inside to press the film and the corrugated paperboards together; When the film-laminated corrugated paperboard moves through the re-pressing unit, its surface can fully receive the pressure of the re-pressing unit, so that the film is pressed downward; The stretching mechanism can lightly scrape the film in two directions to smooth the film and fully stretch it.

[0007] Furthermore, the re-pressure portion includes a through groove centrally opened on the discharge channel, and the through groove extends along the long side direction of the discharge channel to the tail of the discharge channel, a translational cavity box slidably installed on the discharge channel and located in the through groove, and the upper surface layer of the translational cavity box is a breathable layer, two joints of the translational cavity box are connected to each other from the bottom, two pipes are connected to the two joints at one end and to two external negative pressure devices at the other end, two cross beams are installed on the main body of the laminating machine at intervals, and the two cross beams are located above the discharge channel and perpendicular to the discharge channel, and a plurality of sets of rods are mirror-mounted on the two cross beams in pairs, respectively, A plurality of curved arm rods are slidably inserted in the plurality of sleeve rods, a plurality of edge pressing wheels are rotatably mounted on the ends of the plurality of curved arm rods, and the plurality of edge pressing wheels are close to each other and are respectively located at the two edges of the discharge channel, a plurality of sets are respectively fixedly mounted on the plurality of curved arm rods, a plurality of first springs are respectively sleeved on the vertical parts of the plurality of curved arm rods, and one end of the plurality of first springs is respectively against the top surface of the plurality of sets, and the other end is respectively against the bottom surface of the plurality of sleeve rods, two groups of suspension rods are respectively mounted on the opposite surfaces of the two beams, and a split elastic pressure strip is mounted on the ends of the two groups of suspension rods, and the split elastic pressure strip is centrally located between the plurality of edge pressing wheels; The surface of the translational cavity box is flush with the surface of the discharge channel; The plurality of edge pressing wheels and the split elastic pressing strips are in contact with the surface of the discharge channel.

[0008] Furthermore, the split elastic pressure strip comprises a main body strip installed on the ends of the two groups of suspension rods, a plurality of insertion rods slidably inserted at the bottom of the main body strip at equal intervals and in a colinear manner, a plurality of pressure blocks respectively connected to the bottom surfaces of the plurality of insertion rods, and a plurality of second springs respectively sleeved on the plurality of insertion rods; One end of the second spring abuts against the pressing block, and the other end abuts against the bottom surface of the main body strip; A plurality of the pressing blocks are attached to each other in sequence; The bottom side surface of the pressing block is an inclined surface.

[0009] Furthermore, notches are provided through the two crossbeams; A plurality of sleeve rods are respectively slidably connected to the two cross beams through the notches; The side surfaces of the plurality of sleeve rods are all connected with a first side plate, the front surface of the first side plate is vertically connected with a connecting bar, the side surface of the connecting bar is provided with a groove, the second side plate is slidably installed in the groove, and the first side plate and the second side plate are spirally installed with hand-tightened bolts; The first side plate and the second side plate are arranged opposite to each other and are respectively attached to two sides of the crossbeam.

[0010] Further, the stacked recompressor comprises a pressure storage vessel arranged below the outer side of the end of the discharge channel, and the top surface and the side facing the discharge channel of the pressure storage vessel are both open, a mounting frame plate installed on the top of the pressure storage vessel, a first cylinder invertedly installed on the mounting frame plate, and a flat plate connected to the output end of the first cylinder; The planar plate is consistent with the inner length of the pressure storage vessel.

[0011] Further, the spreading mechanism includes two support rods mounted on the main body of the laminating machine in a mirror-image manner, and the two support rods are arranged obliquely, and are respectively horizontally connected to two base strips at the top of the two support rods, two electric push rods are respectively arranged at the tails of the two base strips, and square pieces are respectively slidably mounted on the sides of the two base strips, and the output shafts of the two electric push rods are respectively connected to the two square pieces, and two rubber strips are respectively connected to the two square pieces; The two rubber strips are both in contact with the film; The two rubber strips are located in the middle of the film.

[0012] Furthermore, two rotating bases are installed on the main body of the laminating machine, and the two support rods are respectively connected to the two rotating bases; The two rubber strips are connected to the two square blocks via universal balls.

[0013] Furthermore, the middle parts of the two support rods are connected with a third spring; Two inclined plane blocks are installed on the main body of the laminating machine; The other ends of the two third springs are respectively connected to the two inclined plane blocks.

[0014] Furthermore, the stacked recompressor further comprises two opposing panels respectively attached to the front and rear inner sides of the pressure storage vessel, two groups of guide pillars respectively slidably inserted on the front and rear sides of the pressure storage vessel, a coupling member respectively connected to the tails of the two groups of guide pillars, two supporting plates respectively installed on the front and rear sides of the pressure storage vessel, and two second cylinders respectively arranged on the two supporting plates; The output ends of the two second cylinders are connected to the two coupling parts respectively.

[0015] Furthermore, cutting knives are respectively installed on the plurality of curved arm rods at positions close to the edge pressing wheels; The inner side surfaces of the plurality of cutting knives are respectively flush with the outer side surfaces of the plurality of pressing wheels.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The corrugated cardboard laminating machine can relay the corrugated cardboard after the laminating machine body has finished laminating the corrugated cardboard and produced it. In the process of conveying, the corrugated cardboard can be repeatedly pressed comprehensively, especially the key parts such as the edge and the concave part can be processed in a targeted manner to ensure that the film is pressed again with evenly distributed pressure. At the same time, the re-pressing part has high flexibility and can adapt to corrugated cardboards of different widths, with good compatibility. 2. The stacking and re-pressing device of the corrugated cardboard laminating machine can realize the orderly stacking of the laminated corrugated cardboards through the cooperation with the re-pressing part. In addition, the stacking and re-pressing device can press down all the corrugated cardboards inside it once after each corrugated cardboard enters, so as to promote the combination of film and corrugated cardboard again in a batch pressing manner; 3. The corrugated cardboard laminating machine can continuously and gently scrape the loose film during laminating through the spreading mechanism, and gently spread the film from the middle to both sides simultaneously, so as to ensure that the film is fully spread to prevent wrinkles on the film, and ensure that the film is laid on the corrugated cardboard in a flat state; 4. The corrugated cardboard laminating machine effectively prolongs the pressing time of the film and the corrugated cardboard, and realizes effective reinforcement, thereby ensuring that the film and the surface of the corrugated cardboard are completely bonded and greatly improving the firmness of the bonding between the two, effectively preventing problems such as warping or detachment, and improving the durability of the lamination. At the same time, it can effectively reduce the possibility of defects such as wrinkles and bubbles during the lamination process, ensuring the stability of the lamination quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 A perspective view of the present invention is shown; Figure 2A second perspective view of the present invention is shown; Figure 3 A third perspective view of the present invention is shown; Figure 4 shows a fourth perspective view of the present invention; Figure 5 A fifth perspective view of the present invention is shown; Figure 6 A sixth perspective view of the present invention is shown; Figure 7 A seventh perspective view of the present invention is shown; Figure 8 An eighth perspective view of the present invention is shown; Fig. 9 A ninth perspective view of the present invention is shown; Fig.10 The present invention is shown Figure 2 A magnified image of point A; Fig.11 The present invention is shown Figure 6 A magnified view of point B; Fig.12 The present invention is shown Figure 6 Enlarged view of point C; Fig.13 The present invention is shown Figure 7 The enlarged view of point D; Fig.14 The present invention is shown Figure 8 Enlarged view of point E.

[0019] In the figures, the same reference numerals denote the same structural elements, wherein: 1. Laminating machine body; 2. Discharging channel; 3. Re-pressing part; 31. Translational cavity box; 32. Joint; 33. Pipe; 34. Crossbeam; 35. Sleeve rod; 36. Bending arm rod; 37. Edge pressing wheel; 38. Kit; 39. First spring; 391. Suspension rod; 392. Split elastic pressure strip; 4. Stacking re-pressor; 41. Pressure storage dish; 42. Mounting frame plate; 43. First cylinder; 44. Plane plate; 45. Extrusion panel; 46. Guide column; 47. Joint; 48. Support plate; 49. Second cylinder; 5. Spreading mechanism; 51. Support rod; 52. Long strip of base; 53. Electric push rod; 54. Block; 55. Rubber strip; 6. Main strip; 7. Insert rod; 8. Pressing block; 9. Second spring; 10. First side plate; 11. Connecting strip; 12. Second side plate; 13. Tightening bolt; 14. Rotating base; 15. Universal ball; 16. Third spring; 17. Inclined block; 18. Cutting knife. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] like Figure 1-14 As shown, a corrugated board laminating machine comprises: a laminating machine body 1 and a discharge channel 2 on the laminating machine body 1, a re-pressing part 3 arranged on the laminating machine body 1 and the discharge channel 2, a stacking re-pressing device 4 arranged on the side of the laminating machine body 1 and close to the end of the discharge channel 2, and a spreading mechanism 5 arranged on the laminating machine body 1 and resting on the external film, wherein: The re-pressing part 3 can throw the film-coated corrugated paperboard along the discharge channel 2 into the stacking and re-pressing device 4 in a flowing manner, so that the corrugated paperboard is stacked in the stacking and re-pressing device 4 in sequence, and the stacking and re-pressing device 4 can press down the stacked corrugated paperboard inside to press the film and the corrugated paperboard; When the film-laminated corrugated paperboard is moved through the re-pressing part 3, its surface can fully receive the pressure of the re-pressing part 3, so that the film is pressed downward; The stretching mechanism 5 can lightly scrape the film in two directions to smooth the film and make it fully stretch. The corrugated cardboard laminating machine can relay the corrugated cardboard after the laminating machine main body 1 completes the lamination of the corrugated cardboard and produces it through the re-pressing part 3, and can comprehensively and repeatedly press the corrugated cardboard during the conveying process, especially the key parts such as the edges and recessed parts can be targetedly processed to ensure that the film is pressed again with evenly distributed pressure. At the same time, the re-pressing part 3 has high flexibility and can adapt to corrugated cardboards of different widths and has good compatibility. The stacking and re-pressing device 4 can realize the orderly stacking of the laminated corrugated cardboard by cooperating with the re-pressing part 3. In addition, the stacking and re-pressing device 4 can press all the corrugated cardboards inside itself after each corrugated cardboard enters. A downward pressure is performed to promote the combination of the film and the corrugated cardboard again in a batch lamination manner. The spreading mechanism 5 can continuously and gently scrape the loose film during lamination, and simultaneously stroke the film from the middle to both sides, so as to ensure that the film is fully spread out to prevent wrinkles and the like from occurring on the film, and to ensure that the film is adhered to the corrugated cardboard in a flat state. The corrugated cardboard laminating machine effectively prolongs the lamination time of the film and the corrugated cardboard, and achieves effective reinforcement, so as to ensure that the film is completely adhered to the surface of the corrugated cardboard and greatly improve the firmness of the adhesion between the two, effectively prevent problems such as warping or detachment, and improve the durability of the lamination. At the same time, it can effectively reduce the possibility of defects such as wrinkles and bubbles occurring during the lamination process, and ensure the stability of the lamination quality.

[0022] Optionally, the re-pressurizing portion 3 includes a through groove centrally opened on the discharge channel 2, and the through groove extends along the long side direction of the discharge channel 2 to the tail of the discharge channel 2, a translational cavity box 31 slidably mounted on the discharge channel 2 and located in the through groove, and the upper surface layer of the translational cavity box 31 is a breathable layer, two joints 32 connected to the translational cavity box 31 at intervals from the bottom, two pipes 33, one end of which is respectively connected to the two joints 32 and the other end of which is respectively connected to two external negative pressure devices, two cross beams 34 installed at intervals on the laminating machine body 1, and the two cross beams 34 are located above the discharge channel 2 and perpendicular to the discharge channel 2, a plurality of sleeve rods 35 mirror-mounted on the two cross beams 34 in pairs, and are respectively slidably inserted in a plurality of The bending arm 36 in the sleeve rod 35, the plurality of edge pressing wheels 37 rotatably mounted on the ends of the plurality of bending arm 36, and the plurality of edge pressing wheels 37 are close to each other and are respectively located at the two edges of the discharge channel 2, the plurality of sets 38 are respectively fixedly mounted on the plurality of bending arm 36, the plurality of first springs 39 are respectively sleeved on the vertical parts of the plurality of bending arm 36, and one end of the plurality of first springs 39 is respectively against the top surface of the plurality of sets 38, and the other end is respectively against the bottom surface of the plurality of sleeve rods 35, two groups of suspension rods 391 are respectively mounted on the opposite surfaces of the two beams 34, and the split elastic pressure strips 392 are mounted on the ends of the two groups of suspension rods 391, and the split elastic pressure strips 392 are centrally located between the plurality of edge pressing wheels 37; The surface of the translational cavity box 31 is flush with the surface of the discharge channel 2. The translational cavity box 31 can be driven by a linear motor, a gear rack, etc., so that the translational cavity box 31 can move along the discharge channel 2 in the through groove. The plurality of edge pressing wheels 37 and the split elastic pressure strips 392 are in contact with the surface of the discharge channel 2. When laminating, after the laminating machine body 1 produces a sheet of laminating corrugated cardboard and completely pushes it forward onto the translational cavity box 31, the two external negative pressure devices are immediately started to start suction, so that the translational cavity box 31 is quickly put into a negative pressure state through the two pipes 33, so that the corrugated cardboard is adsorbed through the air permeable layer on the surface of the translational cavity box 31, and then the translational cavity box 31 is moved. The translation cavity box 31 immediately moves forward, carrying the corrugated cardboard along the discharge channel 2. When the translation cavity box 31 is about to reach the end of the discharge channel 2, the two external negative pressure devices stop working, the negative pressure disappears immediately, and the corrugated cardboard loses its restriction. After the translation cavity box 31 stops at the end of the movement, the corrugated cardboard is thrown out under the action of inertia, and then the translation cavity box 31 is controlled to reset. After the laminating machine body 1 produces the next corrugated cardboard that has been laminated, this process is repeated. In the process of sucking and moving the corrugated cardboard forward, when passing through the plurality of pressing wheels 37 and the split elastic pressure strip 392, the moving corrugated cardboard pushes the plurality of pressing wheels 37 upward, and then the plurality of first springs 39 are compressed, and the plurality of bending arm rods 36 are pushed upward along the plurality of sleeve rods 35, and at the same time, the split elastic pressure strip 392 is also pushed upward by the corrugated cardboard. When the corrugated cardboard pushes the plurality of pressing wheels 37 and the split elastic pressure strip 392 to pass through, the plurality of pressing wheels 37 and the split elastic pressure strip 392 also give the corrugated cardboard a downward pressure under the action of elastic force, that is, the split elastic pressure strip 392 presses down on the middle part of the corrugated cardboard, and the plurality of pressing wheels 37 rotate and press down on the edge of the corrugated cardboard as the corrugated cardboard moves, thereby repeatedly pressing the film, especially the plurality of pressing wheels 37 press the edge of the corrugated cardboard in a targeted manner, to ensure uniform distribution of pressure, improve the firmness of the film coating, and effectively prevent the occurrence of warping in subsequent use.

[0023] Optionally, the split elastic pressure strip 392 includes a main body strip 6 installed on the ends of the two groups of suspension rods 391, a plurality of insertion rods 7 slidably inserted at the bottom of the main body strip 6 at equal intervals and in a colinear manner, a plurality of pressure blocks 8 respectively connected to the bottom surfaces of the plurality of insertion rods 7, and a plurality of second springs 9 respectively sleeved on the plurality of insertion rods 7; One end of the second spring 9 abuts against the pressing block 8, and the other end abuts against the bottom surface of the main body strip 6; The plurality of pressing blocks 8 are attached to each other in sequence. When the corrugated board pushes up the plurality of pressing blocks 8 so that the plurality of second springs 9 are compressed and pass through, the plurality of pressing blocks 8 can be pushed up independently, that is, when encountering a concave or convex part on the corrugated board, the pressing block 8 at the corresponding position is pushed up in a state different from other pressing blocks 8, so that even if it is a concave or convex part on the corrugated board, the pressing block 8 can directly contact it to realize downward pressure, further ensuring uniform distribution of pressure, pressing the film, and improving the firmness of the film. The bottom side of the pressing block 8 is an inclined surface, ensuring that the corrugated cardboard can be smoothly lifted up along this side after it contacts the side of the pressing block 8, so as to prevent the corrugated cardboard from colliding with the pressing block 8, causing the corrugated cardboard to be unable to move forward smoothly and affecting normal operation.

[0024] Optionally, both of the two cross beams 34 are provided with notches; The plurality of sleeve rods 35 are respectively slidably connected to the two cross beams 34 through the notches; The side surfaces of the plurality of sleeve rods 35 are connected to the first side panels 10, the front surface of the first side panels 10 is vertically connected to the connecting strips 11, the side surfaces of the connecting strips 11 are provided with grooves, the second side panels 12 are slidably mounted in the grooves, and the first side panels 10 and the second side panels 12 are spirally mounted with hand bolts 13; The first side panel 10 and the second side panel 12 are arranged opposite to each other and are respectively attached to the two sides of the cross beam 34. Under normal circumstances, the hand-tightening bolts 13 are tightened to clamp the first side panel 10 and the second side panel 12 on the cross beam 34 to fix the sleeve rod 35. When the width of the corrugated cardboard changes, the hand-tightening bolts 13 are loosened to move the sleeve rod 35 until the pressing wheels 37 on both sides are respectively adjusted to the positions at the two edges of the corrugated cardboard again, that is, the outer side surface of the pressing wheel 37 is flush with the side surface of the corrugated cardboard, and the hand-tightening bolts 13 are tightened again, thereby ensuring that corrugated cardboards of different widths can be pressed with fast and flexible adjustment, thereby improving the compatibility of the laminating machine.

[0025] Optionally, the stacked recompressor 4 includes a pressure storage dish 41 disposed at the lower outer side of the end of the discharge channel 2, and the top surface of the pressure storage dish 41 and the side facing the discharge channel 2 are both open, a mounting frame plate 42 mounted on the top of the pressure storage dish 41, a first cylinder 43 invertedly mounted on the mounting frame plate 42, and a flat plate 44 connected to the output end of the first cylinder 43; The flat plate 44 is consistent with the internal length of the pressure storage dish 41. The pressure storage dish 41 receives all the corrugated cardboards thrown by the re-pressing part 3, so that the corrugated cardboards are stacked and stored in an orderly manner in the pressure storage dish 41. After each corrugated cardboard is thrown into the pressure storage dish 41, the first cylinder 43 is immediately started to push the flat plate 44 down until the flat plate 44 is pressed down to the corrugated cardboard below, and then the first cylinder 43 drives the flat plate 44 to reset. Before the re-pressing part 3 throws the next corrugated cardboard, the first cylinder 43 needs to drive the flat plate 44 to reset to prevent the corrugated cardboard from being blocked from entering the pressure storage dish 41 normally. At the same time, after each corrugated cardboard is stacked, the first cylinder 4 The next time the pushing distance is reduced, the distance is gradually reduced to ensure that there is downward pressure to press down the corrugated cardboard below, and at the same time, it is prevented that the corrugated cardboard is damaged due to excessive downward pressure. This is repeated until the storage volume of the pressure storage dish 41 is full, and all the corrugated cardboards are pressed down for a while by the flat plate 44, so that the stacked corrugated cardboards are pressed down many times to promote the combination of the film and the corrugated cardboard, thereby effectively extending the lamination time of the film and the corrugated cardboard, achieving effective reinforcement, further ensuring that the film and the surface of the corrugated cardboard are completely attached and greatly improving the firmness of the attachment between the two, effectively preventing problems such as warping or separation, and improving the durability of the lamination.

[0026] Optionally, the spreading mechanism 5 includes two support rods 51 mounted on the laminating machine body 1 in a mirror-image manner, and the two support rods 51 are arranged obliquely, and are respectively horizontally connected to two base strips 52 at the tops of the two support rods 51, two electric push rods 53 are respectively arranged at the tails of the two base strips 52, and square pieces 54 are respectively slidably mounted on the sides of the two base strips 52, and the output shafts of the two electric push rods 53 are respectively connected to the two square pieces 54, and two rubber strips 55 are respectively connected to the two square pieces 54; The two rubber strips 55 are both in contact with the film; The two rubber strips 55 are located in the middle of the film. When laminating, the film roll is continuously loosened under the rotation of the roller, and the two electric push rods 53 are continuously driven to pull the two blocks 54 back along the base strip 52, so that the two rubber strips 55 are synchronously scraped from the middle of the film to both sides, so that the surrounding film is fully unfolded. Then the two electric push rods 53 push the two rubber strips 55 to reset and then pull them back again. This uninterrupted operation ensures that the film can always be attached to the corrugated cardboard in a flat state, thereby effectively reducing the possibility of defects such as wrinkles and bubbles during the laminating process, and ensuring the stability of the laminating quality.

[0027] Optionally, two rotating bases 14 are installed on the laminating machine body 1, and the two support rods 51 are respectively connected to the two rotating bases 14, and the two support rods 51 can freely rotate downward through the two rotating bases 14 when the two rubber strips 55 do not interfere with foreign objects; The two rubber strips 55 are connected to the two square pieces 54 through the universal ball 15. The two rubber strips 55 can be twisted in any direction with the support of the universal ball 15. As the laminating work proceeds, the size of the film roll will become smaller and smaller, so the holding position of the film will gradually move backward. When the film moves backward, the two support rods 51 rotate downward under the action of the two rotating bases 14, so that the two rubber strips 55 move backward synchronously with the film. At the same time, under the action of the universal ball 15, the two rubber strips 55 are subjected to uneven force and their angles change again, achieving adaptive adjustment, thereby ensuring that the two rubber strips 55 can always fully fit the film during the laminating process, thereby ensuring the best effect of flattening the film to further ensure the stability of the laminating quality.

[0028] Optionally, the middle parts of the two support rods 51 are connected with a third spring 16; Two inclined plane blocks 17 are installed on the laminating machine body 1; The other ends of the two third springs 16 are connected to the two inclined blocks 17 respectively. The third springs 16 are used to share the weight of the support rod 51, the base strip 52 and the electric push rod 53, etc., to avoid that all the weight is applied to the film along with the two rubber strips 55, to ensure that the film is gently stroked with a gentle force to ensure that a flattening effect can be achieved, and to prevent excessive force from causing deformation of the film and affecting its use.

[0029] Optionally, the stacking recompressor 4 further includes two opposing panels 45 respectively attached to the front and rear inner sides of the pressure storage dish 41, two groups of guide pillars 46 respectively slidably inserted on the front and rear sides of the pressure storage dish 41, a coupling member 47 respectively connected to the tails of the two groups of guide pillars 46, two supporting plates 48 respectively installed on the front and rear sides of the pressure storage dish 41, and two second cylinders 49 respectively arranged on the two supporting plates 48; The output ends of the two second air cylinders 49 are respectively connected to the two coupling members 47, and the two second air cylinders 49 can be synchronously driven from time to time according to the situation to push the two extrusion panels 45 toward each other, so that the two extrusion panels 45 are used to squeeze and push the corrugated cardboard in the pressure storage dish 41 toward the middle, so that the corrugated cardboard is arranged and stacked neatly, thereby ensuring that the corrugated cardboard can be fully pressed down by the flat plate 44 to prevent the corrugated cardboard from being exposed outside the flat plate 44 and not being pressed due to uneven stacking, thereby affecting the pressing effect.

[0030] Optionally, a cutting knife 18 is respectively installed on a plurality of the bent arm rods 36 at positions close to the edge pressing wheel 37; The inner side surfaces of the plurality of cutting knives 18 are respectively flush with the outer side surfaces of the plurality of pressing wheels 37. When laminating with a film wider than the corrugated cardboard, the plurality of cutting knives 18 can be used to cut the film along the side surface of the corrugated cardboard as the corrugated cardboard moves forward through the plurality of pressing wheels 37, thereby automatically cutting off excess film without the need to separately process the excess film after laminating.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A corrugated board laminating machine, characterized in that: include: A laminating machine body (1) and a discharge channel (2) on the laminating machine body (1), a re-pressing portion (3) arranged on the laminating machine body (1) and the discharge channel (2), a stacking re-pressing device (4) arranged on the side of the laminating machine body (1) and close to the end of the discharge channel (2), and a spreading mechanism (5) arranged on the laminating machine body (1) and resting on an external film, wherein: The re-pressing section (3) is capable of throwing the film-coated corrugated paperboard along the discharge channel (2) into the stacking and re-pressing device (4) in a flowing manner, so that the corrugated paperboard is stacked in sequence in the stacking and re-pressing device (4), and the stacking and re-pressing device (4) is capable of pressing down the stacked corrugated paperboard inside to press the film and the corrugated paperboard together; When the film-laminated corrugated paperboard is moved through the re-pressing section (3), its surface can fully receive the pressure of the re-pressing section (3) so that the film is pressed downward; The stretching mechanism (5) can lightly scrape the film in two directions to smooth the film and fully stretch it.

2. The corrugated board laminating machine according to claim 1, characterized in that: The re-pressing portion (3) comprises a through groove centrally arranged on the discharge channel (2), and the through groove extends along the long side direction of the discharge channel (2) to the tail end of the discharge channel (2); a translational cavity box (31) slidably mounted on the discharge channel (2) and located in the through groove, and the upper surface layer of the translational cavity box (31) is a breathable layer; two joints (32) of the translational cavity box (31) are connected to each other from the bottom; two pipes (33) are connected to the two joints (32) at one end and to two external negative pressure devices at the other end; two cross beams (34) are installed at intervals on the laminating machine body (1), and the two cross beams (34) are located above the discharge channel (2) and perpendicular to the discharge channel (2); and a plurality of sleeve rods (35) are mirror-mounted on the two cross beams (34) in pairs, and are respectively slidably inserted into the plurality of sleeve rods. a bending arm (36) in the (35), a plurality of edge pressing wheels (37) rotatably mounted on the ends of the plurality of bending arm (36), and the plurality of edge pressing wheels (37) are close to each other and are respectively located at the two edges of the discharge channel (2), a plurality of sets (38) are respectively fixedly mounted on the plurality of bending arm (36), a plurality of first springs (39) are respectively sleeved on the vertical parts of the plurality of bending arm (36), and one end of the plurality of first springs (39) is respectively against the top surface of the plurality of sets (38), and the other end is respectively against the bottom surface of the plurality of sleeves (35), two groups of suspension rods (391) are respectively mounted on the opposite surfaces of the two beams (34), and a split elastic pressure strip (392) is mounted on the ends of the two groups of suspension rods (391), and the split elastic pressure strip (392) is centrally located between the plurality of edge pressing wheels (37); The surface of the translational cavity box (31) is flush with the surface of the discharge channel (2); The plurality of edge pressing wheels (37) and the split elastic pressure strips (392) are in contact with the surface of the discharge channel (2).

3. The corrugated board laminating machine according to claim 2, characterized in that: The split elastic pressure strip (392) comprises a main body strip (6) mounted on the ends of the two groups of suspension rods (391), a plurality of insertion rods (7) slidably inserted at the bottom of the main body strip (6) at equal intervals and in a colinear manner, a plurality of pressure blocks (8) respectively connected to the bottom surfaces of the plurality of insertion rods (7), and a plurality of second springs (9) respectively sleeved on the plurality of insertion rods (7); One end of the second spring (9) abuts against the pressing block (8), and the other end abuts against the bottom surface of the main body strip (6); A plurality of the pressing blocks (8) are attached to each other in sequence; The bottom side surface of the pressing block (8) is an inclined surface.

4. The corrugated board laminating machine according to claim 3, characterized in that: The two cross beams (34) are both provided with notches; A plurality of sleeve rods (35) are slidably connected to the two cross beams (34) through the notches respectively; The side surfaces of the plurality of sleeve rods (35) are all connected to a first side plate (10), the front surface of the first side plate (10) is vertically connected to a connecting bar (11), the side surface of the connecting bar (11) is provided with a groove, a second side plate (12) is slidably mounted in the groove, and hand bolts (13) are screwedly mounted on the first side plate (10) and the second side plate (12); The first side plate (10) and the second side plate (12) are arranged opposite to each other and are respectively attached to two sides of the crossbeam (34).

5. The corrugated board laminating machine according to claim 4, characterized in that: The stacking recompressor (4) comprises a pressure storage vessel (41) arranged at the lower outer side of the end of the discharge channel (2), and the top surface and the side facing the discharge channel (2) of the pressure storage vessel (41) are both open, a mounting frame plate (42) mounted on the top of the pressure storage vessel (41), a first cylinder (43) invertedly mounted on the mounting frame plate (42), and a flat plate (44) connected to the output end of the first cylinder (43); The plane plate (44) is consistent with the inner length of the pressure storage vessel (41).

6. The corrugated board laminating machine according to claim 5, characterized in that: The spreading mechanism (5) comprises two support rods (51) mounted on the laminating machine body (1) in a mirror-image manner, and the two support rods (51) are arranged obliquely and are respectively horizontally connected to two base strips (52) at the tops of the two support rods (51), two electric push rods (53) respectively arranged at the tails of the two base strips (52), square pieces (54) respectively slidably mounted on the sides of the two base strips (52), and the output shafts of the two electric push rods (53) are respectively connected to the two square pieces (54), and two rubber strips (55) respectively connected to the two square pieces (54); The two rubber strips (55) are both in contact with the film; The two rubber strips (55) are located in the middle of the film.

7. The corrugated board laminating machine according to claim 6, characterized in that: Two rotating bases (14) are installed on the laminating machine body (1), and the two support rods (51) are respectively connected to the two rotating bases (14); The two rubber strips (55) are connected to the two square blocks (54) via a universal ball (15).

8. The corrugated board laminating machine according to claim 7, characterized in that: The middle parts of the two support rods (51) are both connected to a third spring (16); Two inclined blocks (17) are installed on the laminating machine body (1); The other ends of the two third springs (16) are respectively connected to the two inclined plane blocks (17).

9. The corrugated board laminating machine according to claim 8, characterized in that: The stacking recompressor (4) further comprises two opposing panels (45) respectively attached to the front and rear inner sides of the pressure storage vessel (41), two groups of guide pillars (46) respectively inserted into the front and rear sides of the pressure storage vessel (41), a coupling member (47) respectively connected to the tails of the two groups of guide pillars (46), two supporting plates (48) respectively installed on the front and rear sides of the pressure storage vessel (41), and two second cylinders (49) respectively arranged on the two supporting plates (48); The output ends of the two second cylinders (49) are respectively connected to the two coupling members (47).

10. The corrugated board laminating machine according to claim 9, characterized in that: A plurality of the bent arm rods (36) are respectively provided with cutting knives (18) at positions close to the edge pressing wheels (37); The inner side surfaces of the plurality of cutting knives (18) are respectively flush with the outer side surfaces of the plurality of pressing wheels (37).

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