A double format folding machine

Abstract

The application discloses a double-specification folding machine, which comprises a triangular folding part, a main folding part and a 16-opening folding part. The main folding part comprises left, middle and right wallboards of the main folding part, so that the left and middle wallboards of the main folding part form a left main folding part, and the middle and right wallboards form a right main folding part. The front paper pulling roller comprises a main paper pulling roller and left and right auxiliary paper pulling rollers. The transverse punching roller comprises a knife pad roller and left and right punching knife rollers. The structure of the rear paper pulling roller is the same as that of the front paper pulling roller. The paper cutting roller comprises left and right paper cutting rollers. The pin roller comprises left and right pin rollers. The tooth holding roller comprises left and right tooth holding rollers. The 32-opening folding roller comprises left and right 32-opening folding rollers. The triangular folding part moves between the paper feeding sides of the left and right main folding parts through an upper moving device. The 16-opening folding part moves between the paper discharging sides of the left and right main folding parts through a lower moving device. The folding machine can realize folding of two specifications of paper, and has compact structure and easy maintenance.

Description

Technical Field

[0001] This invention relates to a dual-size folding machine. Background Technology

[0002] In the current printing market, there are two standard sizes for paper: domestic and international. The domestic standard full-size paper is 1092×787mm, known as standard size paper, while the international standard full-size paper is 1194×889mm, known as large size paper, which is slightly larger than the domestic standard.

[0003] With a more open market, printing plants not only need to cater to domestic customers but also need to meet the demands of overseas orders. Purchasing two folding machines is costly and cannot be used effectively. There is a significant market demand for folding machines that can achieve dual-format switching at a lower cost, with a simple structure and stable operation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dual-size folding machine that can not only fold both standard and large-size paper, but also has a compact overall structure, low modification cost, stable operation, and convenient maintenance.

[0005] The objective of this invention is achieved as follows: A dual-size folding machine includes a triangular plate folding section, a main folding section, and a sixteen-page folding section arranged sequentially along the paper path; the triangular plate folding section includes two triangular plate folding section wall panels, two upper supports connected one-to-one between the front bottom and rear bottom of the two triangular plate folding section wall panels, and a paper belt drive roller and a triangular plate disposed between the two triangular plate folding section wall panels; the main folding section includes left and right wall panels of the main folding section and a paper belt drive roller and a triangular plate arranged along the paper path. The path is sequentially arranged between the left and right wall panels of the main folding section: a front pull paper roller, a transverse punching roller, a rear pull paper roller, a cutting roller, a punching needle roller, a gripper roller, and a 32-open folding roller; the 16-open folding section includes left and right wall panels, two corresponding lower supports connected between the front and rear bottoms of the left and right wall panels, a paper guiding mechanism between the left and right wall panels, a 16-open folding knife, a receiving roller, and a folding output belt; wherein...

[0006] The main folding section also includes a middle wall panel of the main folding section disposed between the left and right wall panels of the main folding section, so that the left wall panel of the main folding section and the middle wall panel of the main folding section form a left main folding section, and the middle wall panel of the main folding section and the right wall panel of the main folding section form a right main folding section;

[0007] The front paper pull roller includes a main paper pull roller, a left auxiliary paper pull roller, and a right auxiliary paper pull roller; the main paper pull roller includes a main paper pull roller shaft rotatably passing through the middle wall plate of the main folding section and spanning between the left wall plate and the right wall plate of the main folding section, a left main pressure roller fitted on the left side of the main paper pull roller shaft, and a right main pressure roller fitted on the right side of the main paper pull roller shaft; the left auxiliary paper pull roller includes a left auxiliary paper pull roller shaft spanning between the left wall plate and the middle wall plate of the main folding section via a left arm clutch mechanism, and a left auxiliary pressure roller fitted on the left auxiliary paper pull roller shaft and tangent to the left main pressure roller; the right auxiliary paper pull roller includes a right auxiliary paper pull roller shaft spanning between the middle wall plate and the right wall plate of the main folding section via a right arm clutch mechanism, and a right auxiliary pressure roller fitted on the right auxiliary paper pull roller shaft and tangent to the right main pressure roller;

[0008] The transverse punching roller includes a blade pad roller, a left punching blade roller, and a right punching blade roller; the blade pad roller includes a blade pad roller core shaft that rotatably passes through the middle wall plate of the main folding section and spans between the left and right wall plates of the main folding section, a left blade pad roller fitted to the left of the blade pad roller core shaft, and a right blade pad roller fitted to the right of the blade pad roller core shaft; the left punching blade roller spans between the left and middle wall plates of the main folding section and is tangent to the left blade pad roller; the right punching blade roller spans between the middle and right wall plates of the main folding section and is tangent to the right blade pad roller;

[0009] The structure of the rear paper pull roller is the same as that of the front paper pull roller;

[0010] The paper cutting rollers include a left paper cutting roller that spans between the left wall plate and the middle wall plate of the main folding section and a right paper cutting roller that spans between the middle wall plate and the right wall plate of the main folding section;

[0011] The needle roller includes a needle roller core shaft that rotatably passes through the middle wall plate of the main folding section and spans between the left wall plate and the right wall plate of the main folding section, a left needle roller that is fitted on the left side of the needle roller core shaft and is tangent to the left paper cutting roller, and a right needle roller that is fitted on the right side of the needle roller core shaft and is tangent to the right paper cutting roller.

[0012] The gripper roller includes a left gripper roller that spans between the left wall plate and the middle wall plate of the main folding section and is tangent to the left needle roller, and a right gripper roller that spans between the middle wall plate and the right wall plate of the main folding section and is tangent to the right needle roller.

[0013] The 32-opening folding roller includes a left 32-opening folding roller that spans between the left wall plate and the middle wall plate of the main folding section and is tangent to the left gripper roller, and a right 32-opening folding roller that spans between the middle wall plate and the right wall plate of the main folding section and is tangent to the right gripper roller.

[0014] The main folding section also includes a drive mechanism, which includes a main folding servo motor, a main folding synchronous belt drive mechanism, a power shaft and a gear drive mechanism connected in sequence. The gear drive mechanism drives the front paper pull roller, the transverse punching roller, the rear paper pull roller, the paper cutting roller, the punching needle roller, the gripper roller and the 32-open folding roller.

[0015] The triangular folding section is located on top of the main folding section via an upper moving device, allowing the triangular folding section to move between the paper feed side of the left main folding section and the paper feed side of the right main folding section via the upper moving device;

[0016] The paper tape drive roller inside the triangular plate folding section is driven by a paper tape drive roller servo motor and a paper tape drive roller synchronous belt transmission mechanism.

[0017] The bottom of the sixteen-page folding section is provided with a downward moving device, which allows the sixteen-page folding section to move between the paper output side of the left main folding section and the paper output side of the right main folding section via the downward moving device.

[0018] In the aforementioned dual-specification folding machine, the left arm clutch mechanism includes a pair of paper-pulling roller arms and a pair of clutch cylinders; one end of each pair of paper-pulling roller arms is hinged to the left wall plate and the middle wall plate of the main folding section, and the middle part of each pair of paper-pulling roller arms is fitted onto both ends of the left auxiliary paper-pulling roller shaft; the pair of clutch cylinders are installed on the left wall plate and the middle wall plate of the main folding section, and the piston rods of the pair of clutch cylinders are hinged to the other ends of the pair of paper-pulling roller arms; the structure of the right arm clutch mechanism is the same as that of the left arm clutch mechanism.

[0019] In the aforementioned dual-specification folding machine, the left blade pad roller is equipped with a movable punching blade and two rubber strips; the left punching blade roller is equipped with rubber strips, fixed punching blades, and movable punching blades that correspond one-to-one with the movable punching blade and two rubber strips on the left blade pad roller; the right blade pad roller is equipped with a movable punching blade and two rubber strips; the right punching blade roller is equipped with rubber strips, fixed punching blades, and movable punching blades that correspond one-to-one with the movable punching blade and two rubber strips on the right blade pad roller.

[0020] The aforementioned dual-specification folding machine, among which,

[0021] Each of the left and right paper cutting rollers is equipped with a paper cutting knife;

[0022] Two rows of needles and two 8-folding knives are symmetrically installed on the left and right needle rollers, respectively.

[0023] Two 8-opening clamps and two 32-opening clamps are symmetrically installed on the left and right gripper rollers, respectively; the two 8-opening clamps on the left and right gripper rollers are opposite to the two 8-opening folding knives on the left and right needle rollers, respectively.

[0024] Two 32-open folding hooks and two 32-open folding knives are symmetrically installed on the left and right 32-open folding rollers, respectively; the two 32-open folding knives on the left and right 32-open folding rollers are respectively aligned with the two 32-open clamping plates on the left and right gripper rollers.

[0025] The aforementioned dual-specification folding machine includes an upper moving device comprising two upper guide rails, two pairs of upper sliders, a drive motor, and a transmission mechanism. Each of the two upper guide rails is connected to the top surfaces of the left and right wall panels of the main folding section via an upper guide rail support base. The two pairs of upper sliders are fixed to the bottom surfaces of the two triangular folding section wall panels, allowing the triangular folding section to be mounted on the two upper guide rails via the two pairs of upper sliders. The drive motor is mounted on the outer surface of an upper guide rail support plate. The transmission mechanism includes a rotating shaft connected to the drive motor, two pairs of bevel gears mounted at both ends of the rotating shaft, two lead screws connected to the other side of the bevel gears, and two wall panel supports screwed onto the two lead screws and fixed to an upper support.

[0026] The aforementioned dual-size folding machine, wherein the lower moving device includes two lower guide rails, two pairs of lower sliders, two push cylinders, and a position locking mechanism; each of the two lower guide rails is fixed to the ground correspondingly to the left and right wall panels of the sixteen-open folding section via a lower guide rail support plate; the two pairs of lower sliders are correspondingly installed on the bottom surfaces of the left and right wall panels of the sixteen-open folding section, so that the sixteen-open folding section is mounted on the two lower guide rails via the two pairs of lower sliders; the two push cylinders are correspondingly installed on the inner surfaces of the two lower guide rail support plates, and the ends of the piston rods of the two push cylinders are each connected to a lower support of the sixteen-open folding section; The position locking mechanism includes two left main folding pin seats, two right main folding pin seats, two pin cylinders, and two pins. The two left main folding pin seats and the two right main folding pin seats are all fixed to the outer surface of a lower guide rail support plate, with one right main folding pin seat located between the two left main folding pin seats. The two pin cylinders are each mounted at intervals on the outer surface of a lower support via cylinder brackets, and the distance between the two pin cylinders corresponds to the distance between the two left main folding pin seats or the distance between the two right main folding pin seats. The two pins are connected one-to-one to the piston rods of the two pin cylinders.

[0027] The dual-size folding machine of the present invention has the following features: a central wall plate is provided inside the main folding section, dividing the main folding section into a left main folding section and a right main folding section. The rollers in the left main folding section are suitable for folding large-format paper, and the rollers in the right main folding section are suitable for folding standard-format paper. Both the triangular plate folding section and the sixteen-size folding section are suitable for folding large-format paper and standard-format paper. The triangular plate folding section is mounted on an upper moving device, allowing it to move between the paper feed side of the left main folding section and the paper feed side of the right main folding section. The sixteen-size folding section is mounted on a lower moving device, allowing it to move between the paper output side of the left main folding section and the paper output side of the right main folding section. This not only realizes the folding of dual-size paper, but also has a compact overall structure, low modification cost, stable operation, and convenient maintenance. Attached Figure Description

[0028] Figure 1 This is a perspective view of the dual-size folding machine of the present invention;

[0029] Figure 2 This is a side view of the dual-size folding machine of the present invention;

[0030] Figure 3 This is a structural diagram showing the arrangement of the inner rollers in the main folding section of the dual-specification folding machine of the present invention;

[0031] Figure 4a This is a side view of the triangular plate folding section in the dual-size folding machine of the present invention;

[0032] Figure 4b yes Figure 4a Left side view;

[0033] Figure 5 This is a schematic diagram of the front paper roller in the dual-specification folding machine of the present invention;

[0034] Figure 6a This is a schematic diagram of the transverse perforating roller in the dual-specification folding machine of the present invention;

[0035] Figure 6b yes Figure 6a CC view in the middle;

[0036] Figure 6c yes Figure 6a DD view in the middle;

[0037] Figure 7 This is a schematic diagram of the paper cutting roller in the dual-specification folding machine of the present invention;

[0038] Figure 8 This is a schematic diagram of the needle roller structure in the dual-specification folding machine of the present invention;

[0039] Figure 9This is a schematic diagram of the gripper roller in the dual-specification folding machine of the present invention;

[0040] Figure 10 This is a schematic diagram of the structure of the 32-opening folding roller in the dual-specification folding machine of the present invention;

[0041] Figure 11a This is a side view of the sixteen-page section in the dual-size folding machine of the present invention;

[0042] Figure 11b yes Figure 11a The left-side view. Detailed Implementation

[0043] The invention will now be further described with reference to the accompanying drawings.

[0044] Please see Figures 1 to 11b The dual-size folding machine of the present invention includes a triangular plate folding section 100, a main folding section 200 and a sixteen-page folding section 300 arranged sequentially along the paper path.

[0045] The main folding section 200 includes a left wall panel 20A, a right wall panel 20C, and a front pull roller 21, a transverse punching roller 22, a rear pull roller 23, a paper cutting roller, a punching roller 25, a gripper roller, and a 32-folding roller arranged sequentially between the left wall panel 20A and the right wall panel 20C along the paper path. A middle wall panel 20B is also provided between the left wall panel 20A and the right wall panel 20C. The left wall panel 20A and the middle wall panel 20B together form the left main folding section 201, and the middle wall panel 20B and the right wall panel 20C together form the right main folding section 202.

[0046] The front paper pull roller 21 includes a main paper pull roller, a left auxiliary paper pull roller, and a right auxiliary paper pull roller; wherein,

[0047] The main paper pull roller includes a main paper pull roller shaft 210 that rotatably passes through the middle wall plate 20B of the main folding section and spans between the left wall plate 20A and the right wall plate 20C of the main folding section, a left main pressure roller 211 fitted on the left side of the main paper pull roller shaft 210, and a right main pressure roller 212 fitted on the right side of the main paper pull roller shaft 210;

[0048] The left auxiliary paper pull roller includes a left auxiliary paper pull roller shaft 213 that spans between the left wall plate 20A and the middle wall plate 20B of the main folding section via a left arm clutch mechanism, and a left auxiliary pressure roller 214 that is mounted on the left auxiliary paper pull roller shaft 210 and corresponds to the left main pressure roller 211; the left arm clutch mechanism includes a pair of paper pull roller arms 217 and a pair of clutch cylinders 218; one end of the pair of paper pull roller arms 217 is hinged to the left wall plate 20A and the middle wall plate 20B of the main folding section respectively, and the pair of paper pull roller arms The middle part of the frame 217 is fitted onto both ends of the left auxiliary paper pull roller shaft 213 in a corresponding manner; a pair of clutch cylinders 218 are installed on the left wall plate 20A and the middle wall plate 20B of the main folding section in a corresponding manner, and the ends of the piston rods of the pair of clutch cylinders 218 are hinged to the other ends of the pair of paper pull roller arms 217 in a corresponding manner; the left auxiliary paper pull roller is engaged and disengaged from the main paper pull roller through the left arm clutch mechanism; it is disengaged when the left main folding section 201 is feeding paper or not in use, and is engaged when the left main folding section 201 is feeding paper;

[0049] The right auxiliary paper pull roller includes a right auxiliary paper pull roller shaft 215 that spans between the main folding section middle wall plate 20B and the main folding section right wall plate 20C via a right arm clutch mechanism, and a right auxiliary pressure roller 216 that is mounted on the right auxiliary paper pull roller shaft 215 and corresponds to the right main pressure roller 212; the right arm clutch mechanism includes a pair of paper pull roller arms 217 and a pair of clutch cylinders 218; one end of the pair of paper pull roller arms 217 is hinged to the main folding section middle wall plate 20B and the main folding section right wall plate 20C respectively, and the pair of paper pull roller arms The middle part of the frame 217 is fitted onto both ends of the right auxiliary paper pull roller shaft 215 in a corresponding manner; a pair of clutch cylinders 218 are installed on the middle wall plate 20B and the right wall plate 20C of the main folding section in a corresponding manner, and the ends of the piston rods of the pair of clutch cylinders 218 are hinged to the other ends of the pair of paper pull roller arms 217 in a corresponding manner; the right auxiliary paper pull roller is engaged and disengaged from the main paper pull roller through the clutch mechanism of the left arm; it is disengaged when the right main folding section 202 is feeding paper or not in use, and is engaged when the right main folding section 202 is feeding paper.

[0050] The transverse punching roller 22 includes a cutter pad roller, a left punching cutter roller 223, and a right punching cutter roller 224; wherein,

[0051] The blade pad roller includes a blade pad roller core 220 that rotatably passes through the middle wall plate 20B of the main folding section and spans between the left wall plate 20A and the right wall plate 22C of the main folding section, a left blade pad roller 221 fitted to the left of the blade pad roller core 220, and a right blade pad roller 222 fitted to the right of the blade pad roller core 220;

[0052] The left punching roller 223 spans between the left wall plate 20A of the main folding section and the middle wall plate 20B of the main folding section and is tangent to the left punching pad roller 221;

[0053] The right punching roller 224 spans between the middle wall plate 20B of the main folding section and the right wall plate 20C of the main folding section and is tangent to the right punching pad roller 222;

[0054] The left blade pad roller 221 is equipped with a movable punching blade 226 and two rubber strips 227. The left punching blade roller 223 is equipped with rubber strips 227 corresponding to the movable punching blade 226 and two rubber strips 227 on the left blade pad roller 221, a fixed punching blade 225, and a movable punching blade 226. The right blade pad roller 222 is equipped with a movable punching blade 226 and two rubber strips 227. The right punching blade roller 224 is equipped with rubber strips 227 corresponding to the movable punching blade 226 and two rubber strips 227 on the right blade pad roller 222, a fixed punching blade 225, and a movable punching blade 226 (see...). Figure 6a , Figure 6b and Figure 6c ).

[0055] The left punching roller 223 has a larger outer diameter, making it suitable for larger paper sizes, and the spacing between the punch holes is wider. The right punching roller 224 has a smaller outer diameter, making it suitable for smaller paper sizes, and the spacing between the punch holes is narrower.

[0056] The blade of the movable punch 226 is mounted on a cutter shaft 228, one end of which is connected to a swing arm 229. The position of the blade is finely adjusted by rotating the cutter shaft 228 via the swing arm 29. When not in use or when not punching, the cutter shaft 228 is rotated significantly to bring the blade below the outer circumference of the roller.

[0057] The structure of the rear paper roller 23 is the same as that of the front paper roller 21.

[0058] The paper cutting rollers include a left paper cutting roller 241 spanning between the left wall plate 20A and the middle wall plate 20B of the main folding section, and a right paper cutting roller 242 spanning between the middle wall plate 20B and the right wall plate 20C of the main folding section; each of the left and right paper cutting rollers 241 and 242 is equipped with a paper cutter 240. The left paper cutting roller 241 has a larger outer diameter and is suitable for large-format paper, cutting longer sheets of paper. The right paper cutting roller 242 has a smaller outer diameter and is suitable for small-format paper, cutting shorter sheets of paper.

[0059] The needle roller 25 includes a needle roller core 250 rotatably passing through the main folding section's middle wall plate 20B and spanning between the main folding section's left wall plate 20A and right wall plate 20C; a left needle roller 251 fitted to the left of the needle roller core 250 and tangent to the left cutting roller 241; and a right needle roller 252 fitted to the right of the needle roller core 250 and tangent to the right cutting roller 242. Two rows of needles 253 and two 8-fold folding knives 254 are symmetrically mounted on the left needle roller 251 and right needle roller 252, respectively. The left needle roller 251 is suitable for large-format paper. The right needle roller 252 is suitable for small-format paper.

[0060] The gripper rollers include a left gripper roller 261 that spans between the left wall plate 20A and the middle wall plate 20B of the main folding section and is tangent to the left needle roller 251, and a right gripper roller 262 that spans between the middle wall plate 20B and the right wall plate 20C of the main folding section and is tangent to the right needle roller 252; two 8-opening clamps 263 and two 32-opening clamps 264 are symmetrically mounted on the left gripper roller 261 and the right gripper roller 262, respectively; the two 8-opening clamps 263 on the left gripper roller 261 and the two 8-opening clamps 263 on the right gripper roller 262 are opposite to the two 8-opening folding knives 254 on the left needle roller 251 and the two 8-opening folding knives 254 on the right needle roller 252.

[0061] The 32-opening folding rollers include a left 32-opening folding roller 271, which spans between the left wall panel 20A and the middle wall panel 20B of the main folding section and is tangent to the left gripper roller 261, and a right 32-opening folding roller 272, which spans between the middle wall panel 20B and the right wall panel 20C of the main folding section and is tangent to the right gripper roller 262. Two 32-opening folding hooks 273 and two 32-opening folding knives 274 are symmetrically mounted on the left and right 32-opening folding rollers 271 and 272, respectively. The two 32-opening folding knives 274 on the left and right 32-opening folding rollers 271 and 272 are respectively aligned with the two 32-opening clamps 264 on the left and right gripper rollers 261 and 264, respectively.

[0062] The main folding section 200 also includes an independent drive mechanism, which includes a main folding servo motor 28, a main folding synchronous belt drive mechanism, a power shaft 29 and a gear drive mechanism connected in sequence. The gear drive mechanism drives the front paper pull roller 21, the transverse punching roller 22, the rear paper pull roller 23, the paper cutting roller, the punching needle roller 25, the gripper roller and the 32-folding roller.

[0063] The triangular folding section 100 includes two triangular folding section wall panels 10A, two upper supports 10B connected one-to-one between the front bottom and the rear bottom of the two triangular folding section wall panels 10A, and a paper tape drive roller 11 and a triangular plate 10 disposed between the two triangular folding section wall panels 10A; the paper tape drive roller 11 is driven by a paper tape drive roller servo motor 111 and a paper tape drive roller synchronous belt transmission mechanism 112;

[0064] The triangular folding section 100 is mounted on top of the main folding section 200 via an upper moving device 10C. This upper moving device 10C includes two upper guide rails 17, two pairs of upper sliders 18, a drive motor 12, and a transmission mechanism. Each of the two upper guide rails 17 is connected to the top surfaces of the left and right wall panels 20A of the main folding section via an upper guide rail support 170. The two pairs of upper sliders 18 are fixed to the two triangular folding section wall panels 10A. On the bottom surface, the triangular folding section 100 is mounted on two upper guide rails 17 via two pairs of upper sliders 18; the drive motor 12 is mounted on the outer side of an upper guide rail support 170; the transmission mechanism includes a rotating shaft 13 connected to the drive motor 12, two pairs of bevel gear pairs 14 correspondingly mounted at both ends of the rotating shaft 13, two lead screws 15 correspondingly connected to the other side of the bevel gear pairs 14, and two wall panel supports 16 correspondingly screwed onto the two lead screws 15 and fixed to an upper support 10B. The rotating shaft 13 is rotated by the drive motor 12, which in turn rotates the two pairs of bevel gear pairs 14, and the power is vertically transmitted to the two lead screws 15 through the two pairs of bevel gear pairs 14. The two lead screws 15 drive the two wall panel supports 16 to move, so that the triangular folding section moves between the paper feed side of the left main folding section and the paper feed side of the right main folding section via the upper moving device.

[0065] The 16-page folding section 300 includes a left wall panel 30A, a right wall panel 30B, two corresponding lower supports 30C connected between the front and rear bottoms of the left and right wall panels 30A and 30B, a paper guide mechanism 301, a 16-page folding knife 302, a receiving roller 303, and a folding output belt 304 located between the left and right wall panels 30A and 30B. The rotation of the paper guide mechanism 301, the 16-page folding knife 302, the receiving roller 303, and the folding output belt 304 inside the 16-page folding section 300 are all driven by separate servo motors. The computer controls the speed of the paper cutting roller servo motor, thereby changing the speed of the paper cutting roller to match the paper belt speed with the selected specifications.

[0066] A lower moving device 30D is provided at the bottom of the 16-page folding section 300. This lower moving device 30D includes two lower guide rails 33, two pairs of lower sliders 34, two push cylinders 35, and a position locking mechanism. Each of the two lower guide rails 33 is fixed to the ground correspondingly to the left wall panel 30A and the right wall panel 30B of the 16-page folding section via a lower guide rail support plate 31. A lower support rod 32 connects the upper ends of the two lower guide rail support plates 31. The two pairs of lower sliders 34 are correspondingly installed on the bottom surfaces of the left wall panel 30A and the right wall panel 30B of the 16-page folding section, allowing the 16-page folding section 300 to be mounted on the two lower guide rails 33 via the two pairs of lower sliders 34. The two push cylinders 35 are correspondingly installed on the inner sides of the two lower guide rail support plates 31. Each piston rod end is connected to a lower support 30C of the sixteen-page folding section 300; the position locking mechanism includes two left main folding section pin seats 36, two right main folding section pin seats 37, two pin cylinders 38, and two pins 39; the two left main folding section pin seats 36 and the two right main folding section pin seats 37 are all fixed on the outer surface of a lower guide rail support plate 31, with one of the right main folding section pin seats 37 located in the middle of the two left main folding section pin seats 36; the two pin cylinders 38 are each mounted on the outer surface of a lower support 30C at intervals via cylinder brackets, and the spacing between the two pin cylinders 38 corresponds one-to-one with the spacing between the two left main folding section pin seats 36 or the spacing between the two right main folding section pin seats 37; the two pins 39 are connected one-to-one to the piston rods of the two pin cylinders 38. The piston rods of the two pin-operated cylinders 38 extend, causing the two pins 39 to be pulled away from the left main folding section pin seat 36 or the two right main folding section pin seats 37, respectively. The piston rods of the two push-push cylinders 35 extend or retract, dragging the sixteen-page folding section 300 along the two lower guide rails 33 to the paper output side of the left main folding section or the right main folding section. Finally, the piston rods of the two pin-operated cylinders 38 retract, causing the two pins 39 to be inserted into the two left main folding section pin seats 36 or the two right main folding section pin seats 37, respectively, thus fixing the sixteen-page folding section 300. Two limiting bolts 350, coaxial with the piston rods of the two push-push cylinders 35, are also installed at each end of the two lower support rods 32 to prevent the left wall plate 30A and the right wall plate 30B of the sixteen-page folding section from moving out of the lower guide rails 33.

[0067] The dual-size folding machine of the present invention includes a main folding section wall plate 20B within the main folding section, dividing the main folding section 200 into a left main folding section 201 (large-size folding section) and a right main folding section 202 (small-size folding section). A triangular folding section 100 is mounted on an upper moving device, allowing it to move between the paper feed side of the left main folding section 201 and the paper feed side of the right main folding section 202. A sixteen-page folding section 300 is mounted on a lower moving device, allowing the sixteen-page folding section 300 to move between the paper feed side of the left main folding section 201 and the paper feed side of the right main folding section 202. The paper can move between the paper output side of the left main folding section 201 and the paper output side of the right main folding section 202. When large-format paper needs to be folded, the triangular folding section 100 and the sixteen-page folding section 300 move to the left main folding section 201. The paper is fed into the left main folding section 201 through the triangular folding section 100 for large-format paper folding and is output by the sixteen-page folding section 300. The main controller automatically matches the rotation speed and phase of the triangular folding section 100, the left main folding section 201 and the sixteen-page folding section 300. When folding small-sized paper is required, the triangular folding section 100 and the 16-page folding section 300 move to the right main folding section 202. The paper is fed into the right main folding section 202 through the triangular folding section 100 for folding small-sized paper, and then output by the 16-page folding section 300. The controller automatically matches the rotation speed and phase of the triangular folding section 100, the right main folding section 202, and the 16-page folding section 300. The folding process of the left main folding section 201 and the right main folding section 202 is the same as the working process of a conventional three-roller folding system.

[0068] The pre-printed double-sided paper tape enters the triangular folding section 100. The paper tape drive roller 11 guides the paper tape into the triangular plate 10 to complete the longitudinal fold. Then, the front pull roller 21 conveys the paper tape to the transverse punching roller 22. The transverse punching roller 22 pre-punches a row of holes at the fold point of the paper tape, making the fold more even and providing air venting to prevent problems such as figure-eight wrinkles. Next, the rear pull roller 23 conveys the paper tape to the cutting roller, where the cutting blade 240 cuts the paper tape to the specified length. The paper is then held by the punching needles 253 on the punching needle roller 25 and sent to the gripper roller. The 8-page folding blade 254 on the punching needle roller 25 inserts half-length book pieces into the 8-page clamping plate 263 on the gripper roller, completing the 8-page fold. When a 32-page fold is needed, the folded piece is sent to the 32-page folding roller. The 8-page clamping plate 263 on the gripper roller releases, and the folded piece is folded by the 32-page folding roller. Hook 273 grips; 32-page folding blade 274 of 32-page roller 4 inserts 1 / 4 length of the folded piece into the 32-page clamping plate 264 of the gripper roller, completing the 32-page fold; 32-page folding hook 273 on 32-page roller 4 releases the book piece; the gripper roller sends the book piece to the paper guiding mechanism 301 of the sixteen-page folding section 300, the paper guiding mechanism guides the folded piece into the sixteen-page folding blade 302, the sixteen-page folding blade 302 completes the horizontal fold of the folded piece, and the folded piece is conveyed to the folding output belt 304 through the receiving roller 303 and sent out.

[0069] This invention relates to a dual-size folding machine. Instead of adding rollers to the existing main folding section, it modifies all rollers into left and right rollers, separating them via a central wall plate in the main folding section. Furthermore, the outer diameter of each left roller is correspondingly larger than that of each right roller. This not only enables switching between two paper sizes but also results in a compact structure, low cost, stable operation, and convenient maintenance. It can switch between standard and large-format paper and also meet the folding needs of any two sizes of commonly used roll paper, such as 546, 598, 616, and 625.

[0070] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of the invention and should be defined by the claims.

Claims

1. A dual-specification folding machine, comprising a triangular plate folding section, a main folding section, and a 16-page folding section arranged sequentially along the paper path; the triangular plate folding section includes two triangular plate folding section wall panels, two upper supports connected one-to-one between the front bottom and rear bottom of the two triangular plate folding section wall panels, and a paper belt drive roller and a triangular plate disposed between the two triangular plate folding section wall panels; the main folding section includes left and right wall panels of the main folding section, and a front pull paper roller, a transverse punching roller, a rear pull paper roller, a paper cutting roller, a punching needle roller, a gripper roller, and a 32-page folding roller arranged sequentially between the left and right wall panels of the main folding section along the paper path; the 16-page folding section includes left and right wall panels of the 16-page folding section, two lower supports connected one-to-one between the front bottom and rear bottom of the left and right wall panels of the 16-page folding section, and a paper guiding mechanism disposed between the left and right wall panels of the 16-page folding section, a 16-page folding knife, a receiving roller, and a folding output belt; characterized in that... The main folding section also includes a middle wall panel of the main folding section disposed between the left and right wall panels of the main folding section, so that the left wall panel of the main folding section and the middle wall panel of the main folding section form a left main folding section, and the middle wall panel of the main folding section and the right wall panel of the main folding section form a right main folding section; The front paper pull roller includes a main paper pull roller, a left auxiliary paper pull roller, and a right auxiliary paper pull roller; the main paper pull roller includes a main paper pull roller shaft rotatably passing through the middle wall plate of the main folding section and spanning between the left wall plate and the right wall plate of the main folding section, a left main pressure roller fitted on the left side of the main paper pull roller shaft, and a right main pressure roller fitted on the right side of the main paper pull roller shaft; the left auxiliary paper pull roller includes a left auxiliary paper pull roller shaft spanning between the left wall plate and the middle wall plate of the main folding section via a left arm clutch mechanism, and a left auxiliary pressure roller fitted on the left auxiliary paper pull roller shaft and tangential to the left main pressure roller; the right auxiliary paper pull roller includes a right auxiliary paper pull roller shaft spanning between the middle wall plate and the right wall plate of the main folding section via a right arm clutch mechanism. The paper roller shaft and the right auxiliary pressure roller, which is mounted on the right auxiliary paper pull roller shaft and tangent to the right main pressure roller, are included. The transverse punching roller includes a knife pad roller, a left punching knife roller, and a right punching knife roller. The knife pad roller includes a knife pad roller core shaft that rotatably passes through the middle wall plate of the main folding section and spans between the left wall plate and the right wall plate of the main folding section, a left knife pad roller mounted on the left side of the knife pad roller core shaft, and a right knife pad roller mounted on the right side of the knife pad roller core shaft. The left punching knife roller spans between the left wall plate and the middle wall plate of the main folding section and is tangent to the left knife pad roller. The right punching knife roller spans between the middle wall plate and the right wall plate of the main folding section and is tangent to the right knife pad roller. The structure of the rear paper pull roller is the same as that of the front paper pull roller; The paper cutting rollers include a left paper cutting roller that spans between the left wall plate and the middle wall plate of the main folding section and a right paper cutting roller that spans between the middle wall plate and the right wall plate of the main folding section; The needle roller includes a needle roller core shaft that rotatably passes through the middle wall plate of the main folding section and spans between the left wall plate and the right wall plate of the main folding section, a left needle roller that is fitted on the left side of the needle roller core shaft and is tangent to the left paper cutting roller, and a right needle roller that is fitted on the right side of the needle roller core shaft and is tangent to the right paper cutting roller. The gripper roller includes a left gripper roller that spans between the left wall panel and the middle wall panel of the main folding section and is tangent to the left needle roller, and a right gripper roller that spans between the middle wall panel and the right wall panel of the main folding section and is tangent to the right needle roller; the 32-opening folding roller includes a left 32-opening folding roller that spans between the left wall panel and the middle wall panel of the main folding section and is tangent to the left gripper roller, and a right 32-opening folding roller that spans between the middle wall panel and the right wall panel of the main folding section and is tangent to the right gripper roller; The main folding section also includes a drive mechanism, which includes a main folding servo motor, a main folding synchronous belt drive mechanism, a power shaft and a gear drive mechanism connected in sequence. The gear drive mechanism drives the front paper pull roller, the transverse punching roller, the rear paper pull roller, the paper cutting roller, the punching needle roller, the gripper roller and the 32-open folding roller. The triangular folding section is located on top of the main folding section via an upper moving device, allowing the triangular folding section to move between the paper feed side of the left main folding section and the paper feed side of the right main folding section via the upper moving device; The paper tape drive roller inside the triangular plate folding section is driven by a paper tape drive roller servo motor and a paper tape drive roller synchronous belt transmission mechanism. The bottom of the sixteen-page folding section is provided with a lower moving device, which allows the sixteen-page folding section to move between the paper output side of the left main folding section and the paper output side of the right main folding section via the lower moving device; The outer diameter of all the left rollers is greater than the outer diameter of all the right rollers.

2. The dual-specification folding machine according to claim 1, characterized in that, The left arm clutch mechanism includes a pair of paper-pulling roller arms and a pair of clutch cylinders; one end of the pair of paper-pulling roller arms is hinged to the left wall plate and the middle wall plate of the main folding section, and the middle part of the pair of paper-pulling roller arms is fitted onto both ends of the left auxiliary paper-pulling roller shaft; the pair of clutch cylinders are installed on the left wall plate and the middle wall plate of the main folding section, and the piston rods of the pair of clutch cylinders are hinged to the other end of the pair of paper-pulling roller arms; the structure of the right arm clutch mechanism is the same as that of the left arm clutch mechanism.

3. The dual-specification folding machine according to claim 1, characterized in that, The left blade pad roller is equipped with a movable punching knife and two rubber strips; the left punching knife roller is equipped with rubber strips, fixed punching knives, and movable punching knives that correspond one-to-one with the movable punching knife and two rubber strips on the left blade pad roller; the right blade pad roller is equipped with a movable punching knife and two rubber strips; the right punching knife roller is equipped with rubber strips, fixed punching knives, and movable punching knives that correspond one-to-one with the movable punching knife and two rubber strips on the right blade pad roller.

4. The dual-specification folding machine according to claim 1, characterized in that, Each of the left and right paper cutting rollers is equipped with a paper cutting knife; Two rows of needles and two 8-folding knives are symmetrically installed on the left and right needle rollers, respectively. Two 8-opening clamps and two 32-opening clamps are symmetrically installed on the left and right gripper rollers, respectively; the two 8-opening clamps on the left and right gripper rollers are opposite to the two 8-opening folding knives on the left and right needle rollers, respectively. Two 32-open folding hooks and two 32-open folding knives are symmetrically installed on the left and right 32-open folding rollers, respectively; the two 32-open folding knives on the left and right 32-open folding rollers are respectively aligned with the two 32-open clamping plates on the left and right gripper rollers.

5. The dual-specification folding machine according to claim 1, characterized in that, The upper moving device includes two upper guide rails, two pairs of upper sliders, a drive motor, and a transmission mechanism. Each of the two upper guide rails is connected to the top surfaces of the left and right wall panels of the main folding section via an upper guide rail support seat. The two pairs of upper sliders are fixed to the bottom surfaces of the two triangular folding section wall panels, so that the triangular folding section is mounted on the two upper guide rails via the two pairs of upper sliders. The drive motor is mounted on the outer side of an upper guide rail support plate. The transmission mechanism includes a rotating shaft connected to the drive motor, two pairs of bevel gear pairs mounted at both ends of the rotating shaft, two lead screws connected to the other side of the bevel gear pairs, and two wall panel supports screwed onto the two lead screws and fixed to an upper support.

6. The dual-specification folding machine according to claim 1, characterized in that, The lower moving device includes two lower guide rails, two pairs of lower sliders, two push cylinders, and a position locking mechanism. Each of the two lower guide rails is fixed to the ground via a lower guide rail support plate, corresponding to the left and right wall panels of the sixteen-page folding section. The two pairs of lower sliders are correspondingly installed on the bottom surfaces of the left and right wall panels of the sixteen-page folding section, allowing the sixteen-page folding section to be mounted on the two lower guide rails via the two pairs of lower sliders. The two push cylinders are correspondingly installed on the inner sides of the two lower guide rail support plates, and the ends of the piston rods of the two push cylinders are each connected to a lower support of the sixteen-page folding section. The position locking mechanism includes... It includes two left main hinge pin seats, two right main hinge pin seats, two pin cylinders, and two pins; the two left main hinge pin seats and the two right main hinge pin seats are all fixed on the outer surface of a lower guide rail support plate, with one right main hinge pin seat located in the middle of the two left main hinge pin seats; the two pin cylinders are each mounted on the outer surface of a lower support plate at intervals via cylinder brackets, and the distance between the two pin cylinders corresponds to the distance between the two left main hinge pin seats or the distance between the two right main hinge pin seats; the two pins are connected one-to-one to the piston rods of the two pin cylinders.

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