A corrugated cardboard pressing device and its usage method

Abstract

This invention relates to the field of corrugated cardboard production technology, specifically to a corrugated cardboard pressing equipment, and further to a method of using the corrugated cardboard pressing equipment. The equipment includes a frame and a pressing device mounted on the frame. The pressing device includes an upper pressure roller and a lower pressure roller, and also includes a pressing alignment device mounted on the frame and near the input position of the pressing device. The pressing alignment device includes an upper positioning roller and a lower positioning roller, each with movable teeth capable of engaging with the inner side of the corrugated cardboard. A glue applicator is also provided inside the upper and lower positioning rollers, with a glue outlet on the applicator. A synchronous drive assembly is also provided on the frame. This invention uses the movable teeth on the upper and lower positioning rollers to engage with the corresponding upper and lower corrugated cardboard layers, thus aligning the glue joints of the upper and lower corrugated cardboard layers before pressing.

Description

Technical Field

[0001] This invention relates to the field of corrugated board production technology, specifically to a corrugated board pressing equipment, and further specifically to a method of using the corrugated board pressing equipment. Background Technology

[0002] Corrugated paper is a sheet-like material made by bonding linerboard and corrugated paper that has been processed by corrugating rollers. It is generally divided into two categories: single-wall corrugated paperboard and double-wall corrugated paperboard. Corrugated paperboard has advantages such as low cost, light weight, easy processing, high strength, excellent printability, and convenient storage and handling. More than 80% of corrugated paperboard can be recycled. Corrugated paperboard can be used for packaging food or digital products, is relatively environmentally friendly, and has a wide range of applications.

[0003] Chinese patent CN215096008U discloses a four-layer corrugated cardboard production equipment that can accurately position and guide two sets of single-faced corrugated cardboard, ensuring the accuracy of the flute peak position of the two sets of single-faced corrugated cardboard in subsequent production processes, thereby guaranteeing the quality of the four-layer corrugated cardboard. At the same time, by eliminating one layer of flat cardboard, it effectively reduces the consumption of raw paper and lowers production costs, making it worthy of promotion and use.

[0004] However, the following issues were not disclosed:

[0005] Before the upper and lower corrugated cardboard layers are pressed together, it is impossible to align the glued joints of the upper and lower corrugated cardboard layers in advance. Summary of the Invention

[0006] To address the problems existing in current technology, a corrugated cardboard pressing device and its usage method are provided. The device uses upper and lower positioning rollers for auxiliary conveying, and the movable teeth on the upper and lower positioning rollers respectively engage with the corresponding upper and lower corrugated cardboard layers. This allows for pre-alignment of the glued joints of the upper and lower corrugated cardboard layers before pressing, thus enabling precise pressing.

[0007] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0008] This application provides a corrugated cardboard pressing device, including a frame and a pressing device mounted on the frame. The pressing device includes an upper pressure roller and a lower pressure roller, and also includes a pressing alignment device mounted on the frame and near the input position of the pressing device. The pressing alignment device includes an upper positioning roller corresponding to the upper pressure roller and a lower positioning roller corresponding to the lower pressure roller. The upper positioning roller and the lower positioning roller are respectively provided with movable teeth that can mesh with the inner side of the corrugated cardboard. The upper positioning roller and the lower positioning roller are also provided with glue application tubes, and the glue application tubes are provided with glue outlets for applying glue to the corrugated cardboard. The frame is also provided with a synchronous drive assembly that can simultaneously drive the upper positioning roller and the lower pressure roller to rotate.

[0009] Preferably, the upper positioning roller and the lower positioning roller further include a hollow roller, and the hollow roller is provided with a radial adjustment mechanism that can move the movable teeth radially along the hollow roller. The radial adjustment mechanism includes a bidirectional screw, a sliding sleeve and a U-shaped bracket.

[0010] The bidirectional screw is coaxially arranged inside the hollow roller. One end of the bidirectional screw is rotatably located inside the hollow roller, and the other end of the bidirectional screw is rotatably extended outward through the other end of the hollow roller.

[0011] The C-shaped support is located at one end of the hollow roller near the end of the bidirectional screw. The end of the bidirectional screw is axially connected to the inner wall of the C-shaped support. The outer wall of the C-shaped support is provided with a rotating shaft coaxial with the bidirectional screw. The end of the rotating shaft can rotatably extend outward through the support.

[0012] The sliding sleeve has a pair and is symmetrically arranged at both ends of the bidirectional screw. The sliding sleeve is threadedly connected to the bidirectional screw. A connecting rod is hinged on the sliding sleeve. The end of the connecting rod is hinged to the inner side of the movable tooth. The movable tooth is disposed through the hollow roller. A limiting port for the movable tooth to move is opened on the hollow roller.

[0013] Preferably, the radial adjustment mechanism further includes a knob and a self-locking nut;

[0014] The knob is coaxially positioned on the outside of the two-way screw near the C-shaped bracket end;

[0015] The self-locking nut is located on the side of the bidirectional screw near the knob. The bidirectional screw has an external thread for the self-locking nut to engage. One end of the self-locking nut can abut against the end face of the hollow roller.

[0016] Preferably, the movable teeth are a plurality of those distributed at equal intervals along the circumference of the hollow roller, and the movable teeth include a moving part and a buffer part;

[0017] The movable part is movably disposed within the limiting opening of the hollow roller. Two connecting rods are respectively hinged to the inner ends of the movable part. The movable part has a lower cavity and its side away from the interior of the hollow roller is open. The cross-sectional shape of the buffer part can engage with the inner side of the corrugated cardboard. The lower end of the buffer part is movably inserted into the lower cavity of the movable part. Limiting ears are provided on both sides of the buffer part. Limiting spaces for the movement of the limiting ears are provided on both sides of the interior of the movable part. The bottom of the buffer part has an upper cavity that communicates with the lower cavity of the movable part. Several springs are equidistantly distributed along the length of the upper cavity in the upper cavity. The two ends of the springs abut against the inner walls of the upper cavity and the lower cavity, respectively.

[0018] Preferably, a rubber layer is adhered to the outside of the buffer section.

[0019] Preferably, there are several glue-applying tubes, which are evenly distributed around the circumference of the hollow roller outside the roller. Each glue-applying tube is positioned between the gaps formed by two adjacent movable teeth among all the movable teeth. Two symmetrically arranged rubber baffles are provided at the glue outlet of the glue-applying tube. When the rubber baffles are not in operation, they close the glue outlet of the glue-applying tube. When the rubber baffles are in operation, the two rubber baffles abut against each other through the inner side of the corrugated cardboard to form a strip-shaped outlet.

[0020] Preferably, a first glue inlet tube is coaxially arranged at the end of the hollow roller away from the rotating shaft. The first glue inlet tube is connected to the inside of each glue application tube through a delivery tube. The end of the first glue inlet tube is rotatably mounted on a bracket. A bearing is sleeved on the outside of the end of the first glue inlet tube near the bracket. The bearing is mounted on the bracket. A second glue inlet tube is arranged on the inner ring of the end of the bearing away from the first glue inlet tube. The second glue inlet tube is connected to the bracket through a fixing plate.

[0021] Preferably, an electromagnetic coil is fitted around the outer ring of the second glue inlet tube.

[0022] Preferably, the synchronous drive assembly includes a rotary motor, a first gear, and a second gear;

[0023] The first gear and the second gear are coaxially mounted on the rotating shafts of the upper and lower positioning rollers, respectively. The first gear and the second gear are meshed together. The rotary motor is mounted on the bracket, and the output end of the rotary motor is connected to the end of one of the rotating shafts.

[0024] This application also provides a method of using a corrugated cardboard pressing device, including the following steps:

[0025] S1. The radial adjustment mechanism can be adjusted in advance according to the thickness of the upper and lower corrugated cardboard, so that the movable teeth on the upper and lower positioning rollers match the wavy lines formed on the inner sides of the upper and lower corrugated cardboard, respectively.

[0026] S2. The upper corrugated cardboard and the lower corrugated cardboard are respectively fed to the corresponding upper positioning roller and lower positioning roller. The upper corrugated cardboard and the inner layer of the lower corrugated cardboard are positioned above and below the upper positioning roller and the lower positioning roller, respectively, and are engaged with the movable teeth on the upper positioning roller and the lower positioning roller.

[0027] S3. The upper positioning roller and the lower positioning roller are driven to rotate in opposite directions by the synchronous drive component, so that the upper positioning roller and the lower positioning roller simultaneously drive the upper corrugated cardboard and the lower corrugated cardboard to move in the direction of the pressing device;

[0028] S4. While the upper positioning roller and the lower positioning roller drive the upper corrugated cardboard and the lower corrugated cardboard respectively, glue is applied through the glue outlet opened on the corresponding glue tube;

[0029] S5. The upper and lower pressure rollers on the pressing device precisely align and press the inner sides of the upper and lower corrugated cardboard.

[0030] The advantages of this application compared to the prior art are:

[0031] 1. This application uses upper and lower positioning rollers to assist in conveying, and the movable teeth on the upper and lower positioning rollers respectively engage with the corresponding upper and lower corrugated cardboard, so that the glue joints of the upper and lower corrugated cardboard are aligned before pressing, thereby enabling precise pressing.

[0032] 2. This application uses a glue-applying tube to apply glue while the upper and lower positioning rollers drive the corresponding upper and lower corrugated cardboard for alignment, thereby improving the pressing efficiency.

[0033] 3. This application uses a radial adjustment mechanism to adjust the extension length of the movable teeth according to the corrugated cardboard, so as to achieve the effect of the movable teeth engaging with the inner side of different corrugated cardboards. Attached Figure Description

[0034] Figure 1 This is a partial front view of a corrugated cardboard laminating device;

[0035] Figure 2 A partial three-dimensional corrugated cardboard laminating equipment Figure 1 ;

[0036] Figure 3 This is a partial top view of a corrugated cardboard laminating machine;

[0037] Figure 4 yes Figure 3 Sectional view at point AA along the middle;

[0038] Figure 5 yes Figure 3 Cross-sectional view at the middle edge BB;

[0039] Figure 6 yes Figure 5 Enlarged view at point C;

[0040] Figure 7 yes Figure 5 Enlarged view at point D;

[0041] Figure 8 A partial three-dimensional cross-section of a corrugated cardboard laminating equipment Figure 1 ;

[0042] Figure 9 yes Figure 8 Enlarged view at point E in the middle;

[0043] Figure 10 A partial three-dimensional corrugated cardboard laminating equipment Figure 2 ;

[0044] Figure 11 A partial three-dimensional corrugated cardboard laminating equipment Figure 3 ;

[0045] Figure 12 A partial three-dimensional cross-section of a corrugated cardboard laminating equipment Figure 2 ;

[0046] Figure 13 This is a flowchart of a method for using corrugated cardboard laminating equipment.

[0047] The numbers on the map are:

[0048] 1-Rack;

[0049] 2- Pressing device;

[0050] 21-Upper pressure roller; 22-Lower pressure roller;

[0051] 3-Pressure alignment device;

[0052] 31-Upper positioning roller; 311-Modible tooth; 3111-Spring; 3112-Moving part; 31121-Lower cavity; 3113-Buffer part; 31131-Limiting ear; 31132-Upper cavity; 32-Radial adjustment mechanism; 321-Bidirectional screw; 322-Sliding sleeve; 323-Connecting rod; 325-U-shaped bracket; 326-Knob; 327-Self-locking nut; 328-Rotating shaft; 33-Lower positioning roller; 34-Synchronous drive assembly; 341-Rotary motor; 342-First gear; 343-Second gear; 35-Glue applicator tube; 351-Glue outlet; 352-Rubber baffle; 353-First glue inlet tube; 354-Conveying tube; 355-Bearing; 356-Second glue inlet tube; 36-Electromagnetic coil; 36-Hollow roller. Detailed Implementation

[0053] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0054] See Figures 1 to 13 As shown, a corrugated cardboard pressing device includes a frame 1 and a pressing device 2 mounted on the frame 1. The pressing device 2 includes an upper pressure roller 21 and a lower pressure roller 22. It also includes a pressing alignment device 3 mounted on the frame 1 and near the input position of the pressing device 2. The pressing alignment device 3 includes an upper positioning roller 31 corresponding to the upper pressure roller 21 and a lower positioning roller 33 corresponding to the lower pressure roller 22. The upper positioning roller 31 and the lower positioning roller 33 are respectively provided with movable teeth 311 that can mesh with the inner side of the corrugated cardboard. The upper positioning roller 31 and the lower positioning roller 33 are also provided with a glue applicator 35. The glue applicator 35 is provided with a glue outlet 351 for applying glue to the corrugated cardboard. The frame 1 is also provided with a synchronous drive assembly 34 that can simultaneously drive the upper positioning roller 31 and the lower pressure roller 22 to rotate.

[0055] The radial adjustment mechanism 32 can be adjusted in advance according to the thickness of the upper and lower corrugated cardboard, so that the movable teeth 311 on the upper positioning roller 31 and the lower positioning roller 33 match the wavy lines formed on the inner side of the upper and lower corrugated cardboard, respectively.

[0056] The upper corrugated cardboard and the lower corrugated cardboard are respectively conveyed to the corresponding upper positioning roller 31 and lower positioning roller 33. The upper corrugated cardboard and the inner layer of the lower corrugated cardboard are arranged opposite each other above and below the upper positioning roller 31 and the lower positioning roller 33, and respectively engage with the movable teeth 311 on the upper positioning roller 31 and the lower positioning roller 33.

[0057] The upper positioning roller 31 and the lower positioning roller 33 are driven to rotate in opposite directions by the synchronous drive component 34, so that the upper positioning roller 31 and the lower positioning roller 33 simultaneously drive the upper corrugated cardboard and the lower corrugated cardboard to move towards the pressing device 2.

[0058] While the upper positioning roller 31 and the lower positioning roller 33 drive the upper corrugated cardboard and the lower corrugated cardboard respectively, glue is applied through the glue outlet 351 opened on the corresponding glue tube 35.

[0059] The upper pressure roller 21 and the lower pressure roller 22 on the pressing device 2 precisely align and press the inner sides of the upper corrugated cardboard and the lower corrugated cardboard.

[0060] See Figure 2 , Figure 4 and Figure 11 As shown, the upper positioning roller 31 and the lower positioning roller 33 also include a hollow roller 36. The hollow roller 36 is provided with a radial adjustment mechanism 32 that can move the movable tooth 311 radially along the hollow roller 36. The radial adjustment mechanism 32 includes a bidirectional screw 321, a sliding sleeve 322 and a U-shaped bracket 325.

[0061] The bidirectional screw 321 is coaxially disposed inside the hollow roller 36. One end of the bidirectional screw 321 is rotatably disposed inside the hollow roller 36, and the other end of the bidirectional screw 321 is rotatably extended outward through the other end of the hollow roller 36.

[0062] The C-shaped support 325 is located at one end of the hollow roller 36 near the end of the bidirectional screw 321. The end of the bidirectional screw 321 is axially connected to the inner wall of the C-shaped support 325. The outer wall of the C-shaped support 325 is provided with a rotating shaft 328 coaxial with the bidirectional screw 321. The end of the rotating shaft 328 can rotatably extend outward through the support.

[0063] The sliding sleeve 322 has a pair and is symmetrically arranged at both ends of the bidirectional screw 321. The sliding sleeve 322 is threadedly connected to the bidirectional screw 321. A connecting rod 323 is hinged on the sliding sleeve 322. The end of the connecting rod 323 is hinged to the inner side of the movable tooth 311. The movable tooth 311 is disposed through the hollow roller 36. A limiting port for the movable tooth 311 to move is opened on the hollow roller 36.

[0064] When the movable tooth 311 needs to be adjusted, the operator rotates the bidirectional screw 321. The bidirectional screw 321 drives the two sliding sleeves 322 to move closer or further apart. When the two sliding sleeves 322 move closer together, the two connecting rods 323 gradually change from an inclined position to a vertical position, thereby driving the movable tooth 311 to move outward along the radial direction of the hollow roller 36. When the two sliding sleeves 322 move away from each other, the two connecting rods 323 rejoin, thereby driving the movable tooth 311 to move inward along the radial direction of the hollow roller 36. This allows the extension length of the movable tooth 311 to be adjusted according to the thickness of the corrugated cardboard, so as to achieve the effect of the movable tooth 311 meshing with the inner side of different corrugated cardboard.

[0065] See Figure 2 and Figure 13 As shown, the radial adjustment mechanism 32 also includes a knob 326 and a self-locking nut 327;

[0066] The knob 326 is coaxially mounted on the outside of one end of the bidirectional screw 321 near the C-shaped bracket 325;

[0067] The self-locking nut 327 is located on the side of the bidirectional screw 321 near the knob 326. The bidirectional screw 321 has an external thread for the self-locking nut 327 to engage. One end of the self-locking nut 327 can abut against the end face of the hollow roller 36.

[0068] When adjusting the movable tooth 311, the operator can easily rotate the bidirectional screw 321 by using the knob 326. After the movable tooth 311 is adjusted, the operator can fix the bidirectional screw 321 by rotating the self-locking nut 327 to abut against the end face of the hollow roller 36.

[0069] See Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, the movable teeth 311 are a plurality of ones and are evenly distributed on the hollow roller 36 along the circumference of the hollow roller 36. The movable teeth 311 include a moving part 3112 and a buffer part 3113.

[0070] The movable part 3112 is movably disposed within the limiting opening of the hollow roller 36. Two connecting rods 323 are respectively hinged to the inner ends of the movable part 3112. The movable part 3112 has a lower cavity 31121, with its side away from the interior of the hollow roller 36 open. The cross-sectional shape of the buffer part 3113 is capable of engaging with the inner side of the corrugated cardboard. The lower end of the buffer part 3113 is movably inserted into the lower cavity 31121 of the movable part 3112. The two sides of the buffer part 3113... The moving part 3112 is provided with a limiting ear 31131. The moving part 3112 has a limiting space on both sides inside for the limiting ear 31131 to move. The bottom of the buffer part 3113 is provided with an upper cavity 31132 that communicates with the lower cavity 31121 of the moving part 3112. Several springs 3111 are provided in the upper cavity 31132, which are equidistantly distributed along the length of the upper cavity 31132. The two ends of the springs 3111 are respectively abutted against the inner wall of the upper cavity 31132 and the inner wall of the lower cavity 31121.

[0071] Several springs 3111 enable the buffer part 3113 to have elastic force, so that the buffer part 3113 avoids excessive pressure when engaging with the inside of the corrugated cardboard, thereby preventing damage to the corrugated cardboard.

[0072] See Figure 9 As shown, a rubber layer is adhered to the outside of the buffer part 3113.

[0073] The rubber layer adhered to the outside of the buffer part 3113 can further reduce direct contact between the buffer part 3113 and the corrugated cardboard, thus preventing damage to the corrugated cardboard.

[0074] See Figure 6 and Figure 7 As shown, several glue-applying tubes 35 are provided, and these tubes 35 are evenly distributed around the circumference of the hollow roller 36 on the outside of the hollow roller 36. Each glue-applying tube 35 is respectively located between the gaps formed by two adjacent movable teeth 311 among all movable teeth 311. Two symmetrically arranged rubber baffles 352 are provided at the glue outlet 351 of the glue-applying tube 35. When the rubber baffles 352 are not in operation, they close the glue outlet 351 of the glue-applying tube 35. When the rubber baffles 352 are in operation, they abut against each other through the inner side of the corrugated cardboard to form a strip-shaped outlet.

[0075] When the movable tooth 311 engages with the inner side of the corrugated cardboard, the inner side of the cardboard abuts against the two rubber baffles 352 on the glue-applying tube 35, causing the two rubber baffles 352 to bend inwards into the glue-applying tube 35, thereby forming a strip-shaped outlet for glue application. The glue inside the glue-applying tube 35 is then applied through this strip-shaped outlet to the area on the inner side of the corrugated cardboard that requires glue application. Figure 7As shown, when the two rubber baffles 352 are not in contact with the inner side of the corrugated cardboard, the rubber baffles 352 are made of memory material and automatically reset when not in contact with the outside, thereby closing the glue outlet 351 of the glue applicator 35 and preventing glue from seeping out.

[0076] See Figure 10 As shown, a first glue inlet pipe 353 is coaxially arranged at the end of the hollow roller 36 away from the rotating shaft 328. The first glue inlet pipe 353 is connected to the inside of each glue application pipe 35 through a conveying pipe 354. The end of the first glue inlet pipe 353 is rotatably mounted on the bracket. A bearing 355 is sleeved on the outside of the end of the first glue inlet pipe 353 near the bracket. The bearing 355 is mounted on the bracket. A second glue inlet pipe 356 is arranged on the inner ring of the end of the bearing 355 away from the first glue inlet pipe 353. The second glue inlet pipe 356 is connected to the bracket through a fixing plate.

[0077] When glue needs to be delivered into the coating tube 35, it is connected to the external glue input device through the second glue inlet tube 356. The glue is input into the first glue inlet tube 353 through the second glue inlet tube 356. The glue is input into the corresponding coating tube 35 through each delivery tube 354. When the hollow roller 36 rotates, it is connected to the first glue inlet tube 353 and the second glue inlet tube 356 through the bearing 355 respectively to prevent the second glue inlet tube 356 from rotating on its own and to continuously deliver glue into the coating tube 35 while the hollow roller 36 is rotating.

[0078] See Figure 10 As shown, an electromagnetic coil 36 is fitted around the outer ring of the second glue inlet tube 356.

[0079] The electromagnetic coil 36 can heat the second glue inlet tube 356, so that the delivered glue generates temperature and prevents the glue from solidifying during application.

[0080] See Figure 11 As shown, the synchronous drive assembly 34 includes a rotary motor 341, a first gear 342, and a second gear 343;

[0081] The first gear 342 and the second gear 343 are coaxially mounted on the rotating shafts 328 of the upper positioning roller 31 and the lower positioning roller 33, respectively. The first gear 342 and the second gear 343 are meshed together. The rotary motor 341 is mounted on the bracket, and the output end of the rotary motor 341 is connected to the end of one of the rotating shafts 328.

[0082] When it is necessary to drive the upper positioning roller 31 and the lower positioning roller 33, the rotary motor 341 is started. The rotary motor 341 drives one of the shafts 328 of the upper positioning roller 31 and the lower positioning roller 33 to rotate, so that the first gear 342 meshes with the second gear 343 and rotates in opposite directions, so that the upper corrugated cardboard and the lower corrugated cardboard move in the same direction through the corresponding upper positioning roller 31 and lower positioning roller 33.

[0083] See Figures 1 to 13 As shown, a method of using a corrugated cardboard pressing device includes the following steps:

[0084] S1. The radial adjustment mechanism 32 can be adjusted in advance according to the thickness of the upper corrugated cardboard and the lower corrugated cardboard, so that the movable teeth 311 on the upper positioning roller 31 and the lower positioning roller 33 match the wavy lines formed on the inner side of the upper corrugated cardboard and the lower corrugated cardboard, respectively.

[0085] S2. The upper corrugated cardboard and the lower corrugated cardboard are respectively fed to the corresponding upper positioning roller 31 and lower positioning roller 33. The upper corrugated cardboard and the inner layer of the lower corrugated cardboard are arranged opposite each other above and below the upper positioning roller 31 and the lower positioning roller 33, and respectively engage with the movable teeth 311 on the upper positioning roller 31 and the lower positioning roller 33.

[0086] S3. The upper positioning roller 31 and the lower positioning roller 33 are driven to rotate in opposite directions by the synchronous drive component 34, so that the upper positioning roller 31 and the lower positioning roller 33 simultaneously drive the upper corrugated cardboard and the lower corrugated cardboard to move in the direction of the pressing device 2.

[0087] S4. While the upper positioning roller 31 and the lower positioning roller 33 drive the upper corrugated cardboard and the lower corrugated cardboard respectively, glue is applied through the glue outlet 351 opened on the corresponding glue tube 35.

[0088] S5. The inner sides of the upper corrugated cardboard and the lower corrugated cardboard are precisely aligned and pressed together by the upper pressure roller 21 and the lower pressure roller 22 on the pressing device 2, respectively.

[0089] This application uses upper positioning rollers 31 and lower positioning rollers 33 to assist in conveying. The movable teeth 311 on the upper positioning rollers 31 and lower positioning rollers 33 respectively engage with the corresponding upper and lower corrugated cardboard, so that the glue joints of the upper and lower corrugated cardboard are aligned before pressing, thereby enabling precise pressing.

[0090] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A corrugated cardboard pressing device, comprising a frame (1) and a pressing device (2) disposed on the frame (1), the pressing device (2) comprising an upper pressure roller (21) and a lower pressure roller (22), characterized in that, It also includes a pressing alignment device (3) set on the frame (1) and near the input position of the pressing device (2). The pressing alignment device (3) includes an upper positioning roller (31) corresponding to the upper pressure roller (21) and a lower positioning roller (33) corresponding to the lower pressure roller (22). The upper positioning roller (31) and the lower positioning roller (33) are respectively provided with movable teeth (311) that can mesh with the inner side of the corrugated cardboard. The upper positioning roller (31) and the lower positioning roller (33) are also provided with a glue applicator (35). The glue applicator (35) is provided with a glue outlet (351) for applying glue to the corrugated cardboard. The frame (1) is also provided with a synchronous drive assembly (34) that can drive the upper positioning roller (31) and the lower positioning roller (33) to rotate simultaneously. The upper positioning roller (31) and the lower positioning roller (33) also include a hollow roller (36). The hollow roller (36) is provided with a radial adjustment mechanism (32) that can move the movable tooth (311) radially along the hollow roller (36). The radial adjustment mechanism (32) includes a bidirectional screw (321), a sliding sleeve (322), and a U-shaped bracket (325). The bidirectional screw (321) is coaxially arranged inside the hollow roller (36). One end of the bidirectional screw (321) is rotatably arranged inside the hollow roller (36), and the other end of the bidirectional screw (321) is rotatably extended outward through the other end of the hollow roller (36). The C-shaped support (325) is located at one end of the hollow roller (36) near the end of the bidirectional screw (321). The end of the bidirectional screw (321) is axially connected to the inner wall of the C-shaped support (325). The outer wall of the C-shaped support (325) is provided with a rotating shaft (328) coaxial with the bidirectional screw (321). The end of the rotating shaft (328) can rotatably extend outward through the support. The sliding sleeve (322) has a pair and is symmetrically arranged at both ends of the double-acting screw (321). The sliding sleeve (322) is threadedly connected to the double-acting screw (321). A connecting rod (323) is hinged on the sliding sleeve (322). The end of the connecting rod (323) is hinged to the inner side of the movable tooth (311). The movable tooth (311) is disposed through the hollow roller (36). A limiting port for the movable tooth (311) to move is provided on the hollow roller (36). Several glue-applying tubes (35) are provided. The several glue-applying tubes (35) are distributed at equal intervals along the circumference of the hollow roller (36) outside the hollow roller (36). Each glue-applying tube (35) is respectively set between the gaps formed by two adjacent movable teeth (311) in all movable teeth (311). Two symmetrically arranged rubber baffles (352) are provided at the glue outlet (351) of the glue-applying tube (35). When the rubber baffles (352) are not in operation, the glue outlet (351) of the glue-applying tube (35) is closed by the two rubber baffles (352). When the rubber baffles (352) are in operation, the two rubber baffles (352) abut against the inner side of the corrugated cardboard to form a strip outlet.

2. The corrugated cardboard pressing equipment according to claim 1, characterized in that, The radial adjustment mechanism (32) also includes a knob (326) and a self-locking nut (327); The knob (326) is coaxially disposed on the outside of one end of the bidirectional screw (321) near the U-shaped bracket (325); The self-locking nut (327) is located on the side of the double-acting screw (321) near the knob (326). The double-acting screw (321) has an external thread for the self-locking nut (327) to engage. One end of the self-locking nut (327) can be abutted against the end face of the hollow roller (36).

3. The corrugated cardboard pressing equipment according to claim 1, characterized in that, The movable teeth (311) are several and are evenly distributed on the hollow roller (36) along the circumference of the hollow roller (36). The movable teeth (311) include a moving part (3112) and a buffer part (3113). The movable part (3112) is movably disposed within the limiting opening of the hollow roller (36). Two connecting rods (323) are respectively hinged to the inner ends of the movable part (3112). The movable part (3112) has a lower cavity (31121) and its side away from the interior of the hollow roller (36) is open. The cross-sectional shape of the buffer part (3113) can engage with the inner side of the corrugated cardboard. The lower end of the buffer part (3113) is movably inserted into the lower cavity (31121) of the movable part (3112). The buffer part (3113) has two sides provided with The moving part (3112) has a limiting ear (31131) and a limiting space for the moving ear (31131) to move on both sides inside. The bottom of the buffer part (3113) is provided with an upper cavity (31132) that communicates with the lower cavity (31121) of the moving part (3112). Several springs (3111) are provided in the upper cavity (31132) and are equidistantly distributed along the length of the upper cavity (31132). The two ends of the springs (3111) are respectively abutted against the inner wall of the upper cavity (31132) and the inner wall of the lower cavity (31121).

4. The corrugated cardboard pressing equipment according to claim 3, characterized in that, A rubber layer is adhered to the outside of the buffer section (3113).

5. The corrugated cardboard pressing equipment according to claim 1, characterized in that, A first glue inlet tube (353) is coaxially provided at the end of the hollow roller (36) away from the rotating shaft (328). The first glue inlet tube (353) is connected to the inside of each glue application tube (35) through the conveying tube (354). The end of the first glue inlet tube (353) is rotatably mounted on the bracket. A bearing (355) is sleeved on the outside of the end of the first glue inlet tube (353) near the bracket. The bearing (355) is mounted on the bracket. A second glue inlet tube (356) is provided on the inner ring of the end of the bearing (355) away from the first glue inlet tube (353). The second glue inlet tube (356) is connected to the bracket through a fixing plate.

6. The corrugated cardboard pressing equipment according to claim 5, characterized in that, An electromagnetic coil is fitted around the outer ring of the second glue inlet tube (356).

7. The corrugated cardboard pressing equipment according to claim 1, characterized in that, The synchronous drive assembly (34) includes a rotary motor (341), a first gear (342), and a second gear (343); The first gear (342) and the second gear (343) are coaxially mounted on the rotating shaft (328) of the upper positioning roller (31) and the lower positioning roller (33), respectively. The first gear (342) and the second gear (343) are meshed together. The rotary motor (341) is mounted on the bracket. The output end of the rotary motor (341) is connected to the end of one of the rotating shafts (328).

8. A method of using a corrugated cardboard pressing device, applied to the corrugated cardboard pressing device according to any one of claims 1-7, characterized in that, Includes the following steps: S1. The radial adjustment mechanism (32) can be adjusted in advance according to the thickness of the upper and lower corrugated cardboard, so that the movable teeth (311) on the upper positioning roller (31) and the lower positioning roller (33) match the wavy lines formed on the inner sides of the upper and lower corrugated cardboard, respectively; S2. The upper corrugated cardboard and the lower corrugated cardboard are respectively fed to the corresponding upper positioning roller (31) and lower positioning roller (33). The upper corrugated cardboard and the inner layer of the lower corrugated cardboard are arranged opposite each other above and below the upper positioning roller (31) and the lower positioning roller (33), and respectively mesh with the movable teeth (311) on the upper positioning roller (31) and the lower positioning roller (33); S3. The upper positioning roller (31) and the lower positioning roller (33) are driven to rotate in opposite directions by the synchronous drive assembly (34), so that the upper positioning roller (31) and the lower positioning roller (33) simultaneously drive the upper corrugated cardboard and the lower corrugated cardboard to move in the direction of the pressing device (2); S4. While the upper positioning roller (31) and the lower positioning roller (33) drive the upper corrugated cardboard and the lower corrugated cardboard respectively, glue is applied through the glue outlet (351) opened on the corresponding glue tube (35); S5. The inner sides of the upper corrugated cardboard and the lower corrugated cardboard are precisely joined and pressed together by the upper pressure roller (21) and the lower pressure roller (22) on the pressing device (2).

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