A 16-page folding machine and folding method thereof

Abstract

The invention discloses a 16-fold paper folding machine, comprising a left rear wall panel, a right rear wall panel, a left front wall panel, a middle front wall panel, a right front wall panel, a slitting device, a rear upper paper roller, a rear lower paper roller, a first front corner rod, a first rear corner rod, a second upper corner rod, a second lower corner rod, a second rear corner rod, a left longitudinal paper roller, a first front upper paper roller, a first front lower paper roller, a large triangle plate, a left large paper clamping roller, a right large paper clamping roller, a lower large paper roller, a third corner rod, a fourth corner rod, a right longitudinal paper roller, a second front upper paper roller, a second front lower paper roller, a small triangle plate, a left small paper clamping roller, a right small paper clamping roller and a lower small paper roller. The invention also discloses a folding method of a 16-fold paper folding machine, which can fold out six kinds of 16-fold stickers, and the number of pages of the output paper stickers is flexible and has multiple combinations, which can reduce the generation of waste sheets, making production more economical, more environmentally friendly and more convenient. The folding machine of the present invention can be used alone or in combination with a conventional roll-folding folding machine.

Description

Technical Field

[0001] The invention relates to a 16-page folding machine and a folding method thereof. Background Art

[0002] The folding machine is an important part of the web offset printing machine and is the last important process in printing production. At present, the roll-folding folding machine is widely used.

[0003] Traditional roller folding machines can only output 16 pages of 16-page paper at a time, or fold half-width paper to output 8 pages of 16-page paper. When binding books, they can only be combined in multiples of 16 pages. When the remaining pages need to be bound, manual collation is required and many waste sheets are generated. For example, a booklet consists of 20 pages of 16-page paper. Traditional roller folding machines can only output one 16-page 16-page paper at a time, so they can only output two 16-page 16-page paper sheets, of which 12 pages are blank paper sheets to be discarded. For another example, a booklet consists of 24 pages of 16-page paper sheets. Traditional roller folding machines can only output two 16-page 16-page paper sheets, of which 8 pages are blank paper sheets to be discarded. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a 16-page folding device and a folding method thereof, which can flexibly output the number of pages of paper sheets and has multiple combinations, can reduce the generation of waste sheets, and make production more economical, more environmentally friendly, and more convenient.

[0005] A technical solution to achieve the purpose of the present invention is: a 16-page folding machine, including a left rear wall panel, a right rear wall panel, a left front wall panel, a middle front wall panel, a right front wall panel, a slitting device, a first front corner rod, a first rear corner rod, a second upper corner rod, a second lower corner rod, a second rear corner rod, a left longitudinal paper feed roller, a large triangular plate, a left large paper clamping roller, a right large paper clamping roller, a lower large paper feed roller, a third corner rod, a fourth corner rod, a right longitudinal paper feed roller, a small triangular plate, a left small paper clamping roller, a right small paper clamping roller and a lower small paper feed roller; wherein,

[0006] A rear upper support rod and a rear lower support rod are connected between the front end of the left rear wall plate and the front end of the right rear wall plate;

[0007] The distance between the left front wall panel and the middle front wall panel is the same as the distance between the left rear wall panel and the right rear wall panel, and the left front wall panel and the middle front wall panel are arranged one by one in front of the left rear wall panel and the right rear wall panel, and the right front wall panel is arranged in parallel and at intervals on the right side of the middle front wall panel; the upper part of the rear end surface of the left front wall panel and the upper part of the rear end surface of the middle front wall panel are respectively provided with a paper passing slot with a depth to the middle of the length of the left front wall panel and the middle of the length of the middle front wall panel; the slot corresponding to the paper passing slot is provided on the left side surface of the left front wall panel A left support seat is installed at the bottom, a right support seat is installed on the right side surface of the middle front wall plate corresponding to the bottom of the paper slot, and a front upper support rod and a front lower support rod passing through the paper slot are connected between the left support seat and the right support seat; the front upper support rod and the rear upper support rod are located on the same horizontal plane; the front lower support rod and the rear lower support rod are located on the same horizontal plane; a rear support plate is connected between the rear end of the middle front wall plate and the rear end of the right front wall plate; a front support plate is connected between the front part of the middle front wall plate and the front part of the right front wall plate;

[0008] The slitting device comprises a slitting roller straddling between the middle of the left rear wall plate and the middle of the right rear wall plate and a slitting knife installed at the length center of the slitting roller;

[0009] The two ends of the first front corner rod are connected to the left part of the rear lower support rod and the right end of the front lower support rod in a one-to-one correspondence, so that the angle between the first front corner rod and the rear lower support rod is 45°;

[0010] The first rear corner rod is arranged in parallel with the first front corner rod at the same height, and two ends of the first rear corner rod are connected to the left end of the rear lower support rod and the right part of the front lower support rod in a one-to-one correspondence;

[0011] The two ends of the second upper corner rod are connected to the right end of the rear upper support rod and the left part of the front upper support rod in a one-to-one correspondence, so that the included angle between the second upper corner rod and the first front corner rod is 90°;

[0012] The second lower corner rod is arranged in parallel with the second upper corner rod, and two ends of the second lower corner rod are connected to the right end of the rear lower support rod and the left part of the front lower support rod in a one-to-one correspondence;

[0013] The second rear corner bar is located parallel to and behind the height between the second upper corner bar and the second lower corner bar, and the second rear corner bar is installed at the front end of the left rear wall panel through a bracket;

[0014] The left longitudinal paper-passing roller is arranged at the same height in front of the left side of the second rear corner rod, and the front end of the left longitudinal paper-passing roller is installed on the left support seat;

[0015] The large triangular plate is arranged in front between the left front wall plate and the middle front wall plate;

[0016] The left large paper clamping roller and the right large paper clamping roller are longitudinally installed just below the large triangle plate;

[0017] The lower large paper feeding roller is installed in parallel just below the right large paper clamping roller;

[0018] The third corner bar is arranged parallel to the second lower corner bar at the same height, or is arranged vertically at the same height as the first rear corner bar, and the third corner bar is installed on the right rear end surface of the rear support plate through a bracket;

[0019] The fourth corner bar is arranged parallel to the first rear corner bar at the same height, or is arranged vertically at the same height as the second lower corner bar, and the fourth corner bar is installed on the right rear end surface of the rear support plate through a bracket;

[0020] The height of the right longitudinal paper-passing roller is between the height of the third corner rod and the height of the fourth corner rod, and the front end of the right longitudinal paper-passing roller is installed on the rear right side surface of the right front wall plate through a base;

[0021] The small triangular plate is arranged in front between the middle front wall plate and the right front wall plate;

[0022] The left small paper clamping roller and the right small paper clamping roller are longitudinally installed just below the small triangular plate;

[0023] The lower small paper-passing roller is installed in parallel just below the left small paper-clamping roller.

[0024] In the above-mentioned 16-page folding machine, the large triangle plate and the small triangle plate can also be installed in reverse. When the large triangle plate and the small triangle plate are installed in reverse, an upper large paper feeding roller and an upper small paper feeding roller are arranged one by one at the upper front of the large triangle plate and the upper front of the small triangle plate.

[0025] In the above-mentioned 16-page folding machine, the length of the bottom side of the small triangle is half the length of the bottom side of the large triangle.

[0026] In the above-mentioned 16-page folding machine, a rear upper paper roller is also connected between the front upper part of the left rear wall panel and the front upper part of the right rear wall panel, and the rear upper paper roller and the slitting roller are located on the same horizontal plane; a rear lower paper roller is also connected between the left rear wall panel and the right rear wall panel, and the rear lower paper roller is located behind and below the rear upper paper roller.

[0027] The above-mentioned 16-page folding machine, wherein the first front upper paper roller and the first front lower paper roller are connected one above and one below between the front part of the left front wall panel and the front part of the middle front wall panel; the second front upper paper roller and the second front lower paper roller are vertically installed one above and one below on the left side of the middle part of the right front wall panel.

[0028] Another technical solution for achieving the purpose of the present invention is: a folding method for a 16-page folding machine, based on the 16-page folding machine of the present invention, the folding method includes the following folding modes: 4×4 pages of full front 16-page paper sheets, 2×8 pages of full front 16-page paper sheets, 4×4 pages of full back 16-page paper sheets, 2×8 pages of full back 16-page paper sheets, 4×4 pages of inverted 16-page paper sheets, and 2×8 pages of inverted 16-page paper sheets;

[0029] When folding a 4×4 page full front 16-mo paper sheet: the third corner bar is set parallel to the second lower corner bar at the same height, and the fourth corner bar is set parallel to the first rear corner bar at the same height; the paper tape is split by the slitting device from the middle of the width into a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then passes the fourth corner bar from bottom to top, turns forward, and then enters the small triangle plate. After longitudinal folding, it is clamped by the left small paper clamping roller and the right small paper clamping roller; the right paper belt moves forward, then bypasses the second lower corner bar from bottom to top, and then bypasses the second upper corner bar from bottom to top and still moves forward, then enters the large triangle plate, is longitudinally folded by the large triangle plate, and is clamped by the left large paper clamping roller and the right large paper clamping roller, and finally bypasses the lower large paper passing roller downward and turns to the right, and then bypasses the lower small paper passing roller downward and turns downward and moves and overlaps with the left paper belt after longitudinal folding, and is transported to the paper receiving part of the folding machine for cutting and collection;

[0030] When folding a 2×8 page full front 16-mo paper sheet: set the third corner bar and the second lower corner bar in parallel at the same height, and set the fourth corner bar and the first rear corner bar in parallel at the same height; the paper tape is cut by the slitting device from the middle of the width to become a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then passes the fourth corner bar from bottom to top, turns forward, and then comes to the small triangle plate; the right-path paper tape moves forward After passing through the lower surface of the rear upper paper roller, it bypasses the first front upper paper roller from top to bottom and then turns to the rear, then bypasses the second upper corner bar from top to bottom and turns to the right, then bypasses the right longitudinal paper roller from bottom to top and moves to the left, then bypasses the third corner bar from bottom to top and turns to the front, and comes to the small triangular plate to overlap with the left paper tape, and finally the left and right paper tapes are longitudinally folded together by the small triangular plate and clamped by the left and right small clamping rollers, and then transported together to the paper receiving part of the folding machine for cutting and collection;

[0031] When folding a 4×4 page 16-mo paper sheet with the entire back side: the third corner bar is vertically set at the same height as the first rear corner bar, and the fourth corner bar is vertically set at the same height as the second lower corner bar; the paper tape is split by the slitting device from the middle of the width into a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes by the second rear corner bar from bottom to top and turns to the left, then passes by the left longitudinal paper roller from top to bottom and turns to the right, then passes by the first front corner bar from top to bottom and turns to the front, enters the large triangle plate, is folded longitudinally by the large triangle plate, and is clamped by the left large clip The paper roller is clamped by the right large paper clamping roller, and finally goes down to bypass the lower large paper roller and then turns to the right, and then goes down to bypass the lower small paper roller and turns to move downward; the right-path paper belt moves forward, and then goes from top to bottom to bypass the first front upper paper roller and then turns to move backward, and then goes from top to bottom to bypass the second upper corner bar and then turns to move right, and then goes from bottom to top to bypass the fourth corner bar and then turns to move forward, and then enters the small triangular plate, and is longitudinally folded by the small triangular plate, and then clamped by the left small paper clamping roller and the right small paper clamping roller, and finally overlaps with the longitudinally folded left-path paper belt and is transported to the paper receiving part of the folding machine for cutting and collection;

[0032] When folding a 2×8 page 16-mo paper sheet with the entire back side: the third corner bar is vertically set at the same height as the first rear corner bar, and the fourth corner bar is vertically set at the same height as the second lower corner bar; the paper tape is split by the slitting device from the middle of the width into a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes around the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then passes around the right longitudinal paper roller from bottom to top, turns to the left, and passes around the third corner bar from bottom to top The right paper tape moves forward, passes the first front paper roller from top to bottom, turns backward, then passes the second upper corner bar from top to bottom, turns right, passes the fourth corner bar from bottom to top, turns forward, then comes to the small triangular plate and overlaps with the left paper tape. Finally, the left and right paper tapes are longitudinally folded together by the small triangular plate and clamped by the left and right small clamping rollers, and then transported together to the paper receiving part of the folding machine for cutting and collection.

[0033] When folding 4×4 pages of inverted 16-page paper: the third corner bar is set parallel to the second lower corner bar at the same height, and the fourth corner bar is set parallel to the first rear corner bar at the same height; the large triangle and the small triangle are installed in reverse, and an upper large paper roller and an upper small paper roller are set one by one at the upper front of the large triangle and the upper front of the small triangle; the paper tape is cut by the slitting device from the middle of the width to become a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then bypasses the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, and then bypasses the fourth corner bar from bottom to top and turns to the front The paper strip moves forward, then bypasses the upper small paper roller from top to bottom and enters the small triangular plate, is folded longitudinally by the small triangular plate and is clamped by the left small paper clamping roller and the right small paper clamping roller; the right paper strip moves forward, then bypasses the second lower corner bar from bottom to top, and then bypasses the second upper corner bar from bottom to top and still moves forward, then bypasses the upper large paper roller from top to bottom and enters the large triangular plate, is folded longitudinally by the large triangular plate and is clamped by the left large paper clamping roller and the right large paper clamping roller, finally bypasses the lower large paper roller downward and turns to the right, then bypasses the lower small paper roller downward, overlaps with the left paper strip after longitudinal folding, and is transported to the paper receiving part of the folding machine for cutting and collection;

[0034] When folding 2×8 pages of inverted 16-page paper: the third corner bar is set parallel to the second lower corner bar at the same height, and the fourth corner bar is set parallel to the first rear corner bar at the same height; the large triangle and the small triangle are installed in reverse, and an upper large paper-passing roller and an upper small paper-passing roller are set one by one at the front upper part of the large triangle and the front upper part of the small triangle; the paper tape is cut by the slitting device from the middle of the width to become a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes around the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, and then passes around the fourth corner bar from bottom to top It turns forward and then comes to the upper small paper roller; the right paper tape moves forward, bypasses the first front upper paper roller from top to bottom and then turns backward, then bypasses the second upper corner bar from top to bottom and turns right, then bypasses the right longitudinal paper roller from bottom to top to move left, then bypasses the third corner bar from bottom to top and turns forward, then comes to the upper small paper roller, overlaps with the left paper tape, bypasses the upper small paper roller from top to bottom and then enters the small triangular plate, the left and right paper tapes are folded longitudinally by the small triangular plate and clamped by the left and right small paper clamping rollers, and then transported together to the paper delivery section of the folder for cutting and collection.

[0035] The folding method of the above-mentioned 16-page folding machine, wherein, when performing the folding method of the 4×4 pages of 16-page paper strips with full front, the 2×8 pages of 16-page paper strips with full front, the 4×4 pages of 16-page paper strips with full back, the 2×8 pages of 16-page paper strips with full back, the 4×4 pages of inverted 16-page paper strips, and the 2×8 pages of inverted 16-page paper strips, after the paper tape passes through the slitting device to become the left-path paper tape and the right-path paper tape, the left-path paper tape moves forward and first passes through the lower surface of the rear lower paper roller; the right-path paper tape moves forward and passes through the lower surface of the rear upper paper roller.

[0036] The 16-page folding machine and folding method of the present invention have the following characteristics: by setting a slitting device, multiple corner rods, a left longitudinal paper roller, a right paper roller, a large triangle and a small triangle, the full-width paper strip is first cut into two half-width paper strips by the slitting device, and then the paper feeding route is changed by the flipping and centering of the corner rods, and the left longitudinal paper roller and the right paper roller to realize a variety of paper feeding routes, and finally the large triangle and the small triangle are used for longitudinal folding, and 2 pages, 4 pages, 8 pages, and 16 pages of front and back 16-page paper sheets can be produced respectively, and the combination can cover the pagination requirements of 16-page paper sheets with various numbers of pages. Compared with the configuration of two standard roll-folding folding machines or dual-channel folding machines, the number of pages of the output paper sheets is flexible, the combination is more, and the generation of waste sheets can be reduced, making the production more economical, more environmentally friendly, and more convenient. The 16-page folding machine of the present invention can be used alone or in combination with a traditional roll-folding folding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a left front upper perspective view of the 16-page folding machine of the present invention (the large and small triangular plates are installed in a forward direction);

[0038] Figure 2 It is a right front upper perspective view of the 16-page folding machine of the present invention (the large and small triangular plates are installed in a forward direction);

[0039] Figure 3 It is a left front upper perspective view of the 16-page folding machine of the present invention (the large and small triangular plates are installed in reverse);

[0040] Figure 4 It is a perspective view of the upper right front of the 16-page folding machine of the present invention (the large and small triangle plates are installed in reverse);

[0041] Figure 5 It is a schematic diagram of the first folding mode of the 16-page folding method of the present invention;

[0042] Figure 5a It is a schematic diagram of folding formed after the first folding method of the present invention is performed;

[0043] Figure 6 It is a schematic diagram of the second folding method of the 16-page folding method of the present invention;

[0044] Figure 6a is a schematic diagram of folding formed after the second folding method of the present invention is performed;

[0045] Figure 7 It is a schematic diagram of the third folding method of the 16-page folding method of the present invention;

[0046] Figure 7a is a schematic diagram of folding formed after the third folding method of the present invention is performed;

[0047] Figure 8 It is a schematic diagram of a fourth folding method of the 16-page folding method of the present invention;

[0048] Figure 8a is a schematic diagram of folding formed after the fourth folding method of the present invention is performed;

[0049] Fig. 9 It is a schematic diagram of the fifth folding method of the 16-page folding method of the present invention;

[0050] Figure 9a is a schematic diagram of folding formed after the fifth folding method of the present invention is performed;

[0051] Fig.10 It is a schematic diagram of a sixth folding method of the 16-page folding method of the present invention;

[0052] Fig.10a It is a schematic diagram of folding formed after the sixth folding method of the present invention is performed. DETAILED DESCRIPTION

[0053] The present invention will be further described below in conjunction with the accompanying drawings.

[0054] See also Figures 1 to 4 The 16-page folding machine of the present invention comprises a left rear wall panel 1a, a right rear wall panel 1b, a left front wall panel 2a, a middle front wall panel 2b, a right front wall panel 2c, a slitting device 3, a rear upper paper feed roller 40a, a rear lower paper feed roller 40b, a first front corner rod 51a, a first rear corner rod 51b, a second upper corner rod 52a, a second lower corner rod 52b, a second rear corner rod 52c, a left longitudinal paper feed roller 6a, a first The front upper paper feed roller 41a, the first front lower paper feed roller 41b, the large triangular plate 7, the left large paper clamping roller 71a, the right large paper clamping roller 71b, the lower large paper feed roller 72, the third corner rod 53, the fourth corner rod 54, the right longitudinal paper feed roller 6b, the second front upper paper feed roller 42a, the second front lower paper feed roller 42b, the small triangular plate 8, the left small paper clamping roller 81a, the right small paper clamping roller 81b and the lower small paper feed roller 82; wherein,

[0055] A rear upper support rod 11 and a rear lower support rod 12 are connected between the front end of the left rear wall plate 1a and the front end of the right rear wall plate 1b;

[0056] The distance between the left front wall panel 2a and the middle front wall panel 2b is the same as the distance between the left rear wall panel 1a and the right rear wall panel 1b, and the left front wall panel 2a and the middle front wall panel 2b are arranged one by one in front of the left rear wall panel 1a and the right rear wall panel 1b, and the right front wall panel 2c is arranged in parallel and at intervals on the right side of the middle front wall panel 2b; the upper part of the rear end surface of the left front wall panel 2a and the upper part of the rear end surface of the middle front wall panel 2b are respectively provided with a paper passing slot 20 with a depth to the middle of the length of the left front wall panel 2a and the middle of the length of the middle front wall panel 2b; a paper passing slot 20 corresponding to the bottom of the slot 20 is installed on the left side surface of the left front wall panel 2a A left support seat 23 is provided, and a right support seat 24 is installed on the right side surface of the middle front wall plate 2b corresponding to the bottom of the paper slot 20, and a front upper support rod 21 and a front lower support rod 22 passing through the paper slot 20 are connected between the left support seat 23 and the right support seat 24; the front upper support rod 21 and the rear upper support rod 11 are located on the same horizontal plane; the front lower support rod 22 and the rear lower support rod 12 are located on the same horizontal plane; a rear support plate 25 is connected between the rear end of the middle front wall plate 2b and the rear end of the right front wall plate 2c; a front support plate 26 is connected between the front part of the middle front wall plate 2b and the front part of the right front wall plate 2c;

[0057] The slitting device 3 includes a slitting roller 31 straddling between the middle of the left rear wall plate 1a and the middle of the right rear wall plate 1b and a slitting knife 32 installed at the length center of the slitting roller 31;

[0058] The rear upper paper feeding roller 40a is connected between the front upper part of the left rear wall plate 1a and the front upper part of the right rear wall plate 1b and is located on the same horizontal plane as the slitting roller 31;

[0059] The rear lower paper feed roller 40b is connected between the left rear wall plate 1a and the right rear wall plate 1b and is located at the rear and lower part of the rear upper paper feed roller 41a;

[0060] The two ends of the first front corner rod 51a are connected to the left part of the rear lower support rod 12 and the right end of the front lower support rod 22 in a one-to-one correspondence, so that the angle between the first front corner rod 51a and the rear lower support rod 12 is 45°;

[0061] The first rear corner rod 51b is arranged in parallel with the first front corner rod 51a at the same height, and the two ends of the first rear corner rod 51b are connected to the left end of the rear lower support rod 12 and the right part of the front lower support rod 22 in a one-to-one correspondence;

[0062] The two ends of the second upper corner rod 52a are connected to the right end of the rear upper support rod 11 and the left part of the front upper support rod 21 one by one, so that the angle between the second upper corner rod 52a and the first front corner rod is 90°;

[0063] The second lower corner rod 52b is arranged in parallel with the second upper corner rod 52a, and the two ends of the second lower corner rod 52b are connected to the right end of the rear lower support rod 12 and the left part of the front lower support rod 22 in a one-to-one correspondence;

[0064] The second rear corner bar 52c is located parallel to the rear between the height of the second upper corner bar 52a and the height of the second lower corner bar 52b, and the second rear corner bar 52c is installed at the front end of the left rear wall plate 1a through the bracket 50;

[0065] The left longitudinal paper-passing roller 6a is arranged at the same height in front of the left side of the second rear corner rod 52c, and the front end of the left longitudinal paper-passing roller 6a is installed on the left support seat 23;

[0066] The first front upper paper-feeding roller 41a and the first front lower paper-feeding roller 41b are connected one above the other between the front portion of the left front wall panel 2a and the front portion of the middle front wall panel 2b;

[0067] The large triangle plate 7 is arranged in front between the left front wall plate 2a and the middle front wall plate 2b;

[0068] The left large clamping roller 71a and the right large clamping roller 71b are longitudinally installed just below the large triangle plate 7;

[0069] The lower large paper feeding roller 72 is installed in parallel just below the right large paper clamping roller 71b;

[0070] The third corner bar 53 is arranged parallel to the second lower corner bar 52b at the same height, or is arranged vertically at the same height as the first rear corner bar 51b, and the third corner bar 53 is installed on the rear end surface of the right part of the rear support plate 25 through a bracket;

[0071] The fourth corner bar 54 is arranged parallel to the first rear corner bar 51b at the same height, or is arranged vertically at the same height as the second lower corner bar 52b, and the fourth corner bar 54 is installed on the right rear end surface of the rear support plate 25 through a bracket;

[0072] The height of the right longitudinal paper-passing roller 6b is between the height of the third corner rod 53 and the height of the fourth corner rod 54, and the front end of the right longitudinal paper-passing roller 6b is installed on the rear right side surface of the right front wall plate 2c through a base;

[0073] The second front upper paper-feeding roller 42a and the second front lower paper-feeding roller 42b are vertically mounted one above the other on the left side of the middle portion of the right front wall plate 2c;

[0074] The small triangle plate 8 is arranged in front of the second front upper paper feeding roller 42a and the second front lower paper feeding roller 42b; the lengths of the three sides of the small triangle plate 8 are one-to-one half of the lengths of the three sides of the large triangle plate 7;

[0075] The left small clamping roller 81a and the right small clamping roller 81b are longitudinally installed just below the small triangular plate 8;

[0076] The lower small paper feeding roller 82 is installed in parallel just below the left small paper pinching roller 81a.

[0077] The large triangle plate 7 and the small triangle plate 8 can not only be installed in the forward direction, that is, the large triangle plate 7 and the small triangle plate 8 are tilted forward, but also can be installed in the reverse direction, that is, the large triangle plate 7 and the small triangle plate 8 are tilted backward; when the large triangle plate 7 and the small triangle plate 8 are installed in reverse, an upper large paper passing roller 70 and an upper small paper passing roller 80 are arranged one by one at the upper front of the large triangle plate 7 and the upper front of the small triangle plate 8.

[0078] The 16-page folding method of the present invention comprises the following folding modes: 4×4 pages of 16-page paper sheets with full front sides, 2×8 pages of 16-page paper sheets with full front sides, 4×4 pages of 16-page paper sheets with full back sides, 2×8 pages of 16-page paper sheets with full back sides, 4×4 pages of inverted 16-page paper sheets, and 2×8 pages of inverted 16-page paper sheets.

[0079] The folding method of the 4×4 page full front 16-mo paper sheet is as follows: the third corner bar 53 is set parallel to the second lower corner bar 52b at the same height, and the fourth corner bar 54 is set parallel to the first rear corner bar 51b at the same height; the paper tape 100 is cut by the slitting device 3 from the middle of the width to become the left paper tape 101 and the right paper tape 102; the left paper tape 101 moves forward and passes through the lower surface of the rear lower paper roller 40b, then bypasses the first front corner bar 51a from bottom to top and turns to the right from the upper surface of the first rear corner bar 51b, then bypasses the fourth corner bar 54 from bottom to top and turns to the front, then passes through the upper surface of the second front lower paper roller 42b and enters the small triangular plate 8, which is 8 is folded longitudinally, and then clamped by the left small paper clamping roller 81a and the right small paper clamping roller 81b; the right paper belt 102 moves forward and passes through the lower surface of the rear upper paper roller 40a, then bypasses the second lower corner rod 52b from bottom to top, and then bypasses the second upper corner rod 52a from bottom to top and still moves forward, then passes through the upper surface of the first front upper paper roller 41a and enters the large triangular plate 7, is folded longitudinally by the large triangular plate 7, and then is clamped by the left large paper clamping roller 71a and the right large paper clamping roller 71b, finally bypasses the lower large paper roller 72 downward, turns to the right, and bypasses the lower small paper roller 82 downward, turns to move downward, and overlaps with the left paper belt 101 after longitudinal folding, and is transported to the paper receiving part of the folding machine for cutting and collection (see Figure 5 and Figure 5a ).

[0080] The folding method of 2×8 pages of full front 16-mo paper is as follows: the third corner bar 53 is set parallel to the second lower corner bar 52b at the same height, and the fourth corner bar 54 is set parallel to the first rear corner bar 51b at the same height; the paper tape 100 is cut by the slitting device 3 from the middle of the width to become the left paper tape 101 and the right paper tape 102; the left paper tape 101 moves forward and passes through the lower surface of the rear lower paper roller 40b, then bypasses the first front corner bar 51a from bottom to top and then turns to the right from the upper surface of the first rear corner bar 51b, then bypasses the fourth corner bar 54 from bottom to top and then turns forward, then passes through the upper surface of the second front lower paper roller 42b to the small triangular plate 8; the right paper tape 101 moves forward and passes through the lower surface of the second front lower paper roller 42b to the small triangular plate 8; The paper tape 102 moves forward and passes through the lower surface of the rear upper paper roller 40a, then bypasses the first front upper paper roller 41a from top to bottom and turns to move backward, then bypasses the second upper corner rod 52a from top to bottom and turns to move right, then bypasses the right longitudinal paper roller 6b from bottom to top and moves left, then bypasses the third corner rod 53 from bottom to top and turns forward, and passes through the upper surface of the second front lower paper roller 42b to the small triangular plate 8 and overlaps with the left paper tape 101, and finally the left paper tape 101 and the right paper tape 102 are longitudinally folded together by the small triangular plate 8 and clamped by the left small clamping roller 81a and the right small clamping roller 81b, and then transported together to the paper receiving part of the folding machine for cutting and collection (see Figure 6 and Figure 6a ).

[0081] The folding method of the 4×4 page full back 16-mo paper sheet is as follows: the third corner bar 53 is vertically set at the same height as the first rear corner bar 51b, and the fourth corner bar 54 is vertically set at the same height as the second lower corner bar 52b; the paper tape 100 is cut by the slitting device 3 from the middle of the width to become the left-path paper tape 101 and the right-path paper tape 102; the left-path paper tape 101 moves forward and passes through the lower surface of the rear lower paper roller 40b, then bypasses the second rear corner bar 52c from bottom to top and turns to the left, then bypasses the left longitudinal paper roller 6a from top to bottom and turns to the right, and passes through the paper slot 20 of the left front wall panel 2a and the paper slot 20 of the middle front wall panel 2b, then bypasses the first front corner bar 51a from top to bottom and turns forward, and passes through the upper surface of the first front lower paper roller 41b and enters the large triangle plate 7, After being folded longitudinally by the large triangular plate 7, it is clamped by the left large paper clamping roller 71a and the right large paper clamping roller 71b, and finally goes downward to bypass the lower large paper passing roller 72 and turn to the right, and then goes downward to bypass the lower small paper passing roller 82 and turn downward; the right paper belt 102 goes forward and passes through the lower surface of the rear upper paper passing roller 40a, bypasses the first front upper paper passing roller 41a from top to bottom and turns to move backward, then bypasses the second upper corner rod 52a from top to bottom and turns to move right, and then bypasses the fourth corner rod 54 from bottom to top and turns to move forward, and then passes through the upper surface of the second front upper paper passing roller 42a and enters the small triangular plate 8, and after being folded longitudinally by the small triangular plate 8, it is clamped by the left small paper clamping roller 81a and the right small paper clamping roller 81b, and finally overlaps with the longitudinally folded left paper belt 101 and is transported to the paper receiving part of the folding machine for cutting and collection (see Figure 7 and Figure 7a ).

[0082] The folding method of 2×8 pages of 16-mo paper with full back is as follows: the third corner bar 53 is vertically set at the same height as the first rear corner bar 51b, and the fourth corner bar 54 is vertically set at the same height as the second lower corner bar 52b; the paper tape 100 is cut by the slitting device 3 from the middle of the width to become the left paper tape 101 and the right paper tape 102; the left paper tape 101 moves forward and passes through the lower surface of the rear lower paper roller 40b, then bypasses the first front corner bar 51a from bottom to top and then turns to the right from the upper surface of the first rear corner bar 51b, then bypasses the right longitudinal paper roller 6b from bottom to top and then turns to the left, and bypasses the third corner bar 53 from bottom to top and then turns forward, and then passes from the second front lower paper roller 40b. After passing the upper surface of the roller 42b, it arrives at the small triangular plate 8; the right paper tape 102 moves forward and passes through the lower surface of the rear upper paper roller 40a, bypasses the first front upper paper roller 41a from top to bottom, turns to move backward, then bypasses the second upper corner rod 52a from top to bottom, turns to the right, and bypasses the fourth corner rod 54 from bottom to top, then passes through the upper surface of the second front upper paper roller 42a to the small triangular plate 8 and overlaps with the left paper tape 101, and finally the left paper tape 101 and the right paper tape 102 are longitudinally folded together by the small triangular plate 8 and clamped by the left small clamping roller 81a and the right small clamping roller 81b, and then transported together to the paper receiving part of the folding machine for cutting and collection (see Figure 8 and Figure 8a ).

[0083] The folding method of the 4×4 page inverted 16-page paper sheet is as follows: the third corner rod 53 is set parallel to the second lower corner rod 52b at the same height, and the fourth corner rod 54 is set parallel to the first rear corner rod 51b at the same height; the large triangle plate 7 and the small triangle plate 8 are installed in reverse, and an upper large paper roller 70 and an upper small paper roller 80 are set one by one at the front upper part of the large triangle plate 7 and the front upper part of the small triangle plate 8; the paper tape 100 is cut by the slitting device 3 from the middle of the width to become a left-path paper tape 101 and a right-path paper tape 102; the left-path paper tape 101 moves forward and passes through the lower surface of the rear lower paper roller 40b, then bypasses the first front corner rod 51a from bottom to top and then turns to the right from the upper surface of the first rear corner rod 51b, then bypasses the fourth corner rod 54 from bottom to top and turns forward, and then passes from the upper surface of the second front lower paper roller 42b The right-path paper belt 102 passes through the surface of the rear upper paper roller 40a, and then bypasses the upper small paper roller 80 from top to bottom and rearward to enter the small triangular plate 8, and is clamped by the left small paper clamping roller 81a and the right small paper clamping roller 81b after being longitudinally folded by the small triangular plate 8; the right-path paper belt 102 moves forward and passes through the lower surface of the rear upper paper roller 40a, then bypasses the second lower corner rod 52b from bottom to top, and then bypasses the second upper corner rod 52a from bottom to top and still moves forward, then passes through the upper surface of the second front upper paper roller 42a, and bypasses the upper large paper roller 70 from top to bottom and rearward to enter the large triangular plate 7, and is longitudinally folded by the large triangular plate 7 and is clamped by the left large paper clamping roller 71a and the right large paper clamping roller 71b, finally bypasses the lower large paper roller 72 downward and turns to the right, then bypasses the lower small paper roller 82 downward, overlaps with the longitudinally folded left-path paper belt 101, and is transported to the paper receiving part of the folding machine for cutting and collection (see Fig. 9 and Figure 9a ).

[0084] The folding method of the 2×8 pages of inverted 16-page paper is as follows: the third corner rod 53 is set parallel to the second lower corner rod 52b at the same height, and the fourth corner rod 54 is set parallel to the first rear corner rod 51b at the same height; the large triangle plate 7 and the small triangle plate 8 are installed in reverse, and an upper large paper roller 70 and an upper small paper roller 80 are set one by one at the front upper part of the large triangle plate 7 and the front upper part of the small triangle plate 8; the paper tape 100 is cut by the slitting device 3 from the middle of the width to become a left-path paper tape 101 and a right-path paper tape 102; the left-path paper tape 101 moves forward and passes through the lower surface of the rear lower paper roller 40b, then bypasses the first front corner rod 51a from bottom to top, turns to the right from the upper surface of the first rear corner rod 51b, and then bypasses the fourth corner rod 54 from bottom to top, turns to the front, and then passes from the second front lower paper roller 42 After passing through the upper surface of b, it arrives at the upper small paper roller 80; the right paper tape 102 moves forward and passes through the lower surface of the rear upper paper roller 40a, bypasses the first front upper paper roller 41a from top to bottom and then turns to move backward, then bypasses the second upper corner rod 52a from top to bottom and turns to the right, then bypasses the right longitudinal paper roller 6b from bottom to top to move left, then bypasses the third corner rod 53 from bottom to top and turns forward, and passes through the upper surface of the second front upper paper roller 42a to arrive at the upper small paper roller 80, overlaps with the left paper tape 101, and then bypasses the upper small paper roller 80 from top to bottom and rear to enter the small triangular plate 8, and the left paper tape 101 and the right paper tape 102 are longitudinally folded together by the small triangular plate 8 and clamped by the left small clamping roller 81a and the right small clamping roller 81b, and then transported together to the paper receiving part of the folding machine for cutting and collection (see Fig.10 and Fig.10a ).

[0085] The folding method of the 16-page folding machine of the present invention can produce 2 pages, 4 pages, 8 pages, and 16 pages of 16-page printed sheets on both sides through a variety of paper routes, and can be combined to cover the 16-page collation requirements of various numbers of pages. For example, a booklet consists of 20 pages of 16-page paper sheets. You can first use a traditional roll-folding folding machine to output a 16-page 16-page paper sheet, and then use the folding machine of the present invention to output a 4×4 page state for collation, so there will be no blank waste sheets; you can also use the folding machine of the present invention alone to output 2×8 pages of paper sheets once, and then output 4×4 pages of paper sheets once for collation, and there will be no blank waste sheets.

[0086] For example, a booklet consists of 24 pages of 16-page paper sheets. You can first use a traditional roll-folding folder to output a 16-page 16-page paper sheet, and then use the folder of the present invention to output printed sheets in a 4×4 page state for collation, so there will be no blank waste sheets; you can also use the folder of the present invention alone to output 2×8 pages of paper sheets in two times, and there will be no blank waste sheets.

[0087] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A 16-page folding machine, comprising a left rear wall panel, a right rear wall panel, a left front wall panel, a middle front wall panel, a right front wall panel, a slitting device, a first front corner rod, a first rear corner rod, a second upper corner rod, a second lower corner rod, a second rear corner rod, a left longitudinal paper feed roller, a large triangular plate, a left large paper clamping roller, a right large paper clamping roller, a lower large paper feed roller, a third corner rod, a fourth corner rod, a right longitudinal paper feed roller, a small triangular plate, a left small paper clamping roller, a right small paper clamping roller and a lower small paper feed roller; characterized in that: A rear upper support rod and a rear lower support rod are connected between the front end of the left rear wall plate and the front end of the right rear wall plate; The distance between the left front wall panel and the middle front wall panel is the same as the distance between the left rear wall panel and the right rear wall panel, and the left front wall panel and the middle front wall panel are arranged one by one in front of the left rear wall panel and the right rear wall panel, and the right front wall panel is arranged in parallel and at intervals on the right side of the middle front wall panel; the upper part of the rear end surface of the left front wall panel and the upper part of the rear end surface of the middle front wall panel are respectively provided with a paper passing slot with a depth to the middle of the length of the left front wall panel and the middle of the length of the middle front wall panel; the slot corresponding to the paper passing slot is provided on the left side surface of the left front wall panel A left support seat is installed at the bottom, a right support seat is installed on the right side surface of the middle front wall plate corresponding to the bottom of the paper slot, and a front upper support rod and a front lower support rod passing through the paper slot are connected between the left support seat and the right support seat; the front upper support rod and the rear upper support rod are located on the same horizontal plane; the front lower support rod and the rear lower support rod are located on the same horizontal plane; a rear support plate is connected between the rear end of the middle front wall plate and the rear end of the right front wall plate; a front support plate is connected between the front part of the middle front wall plate and the front part of the right front wall plate; The slitting device comprises a slitting roller straddling between the middle of the left rear wall plate and the middle of the right rear wall plate and a slitting knife installed at the length center of the slitting roller; The two ends of the first front corner rod are connected to the left part of the rear lower support rod and the right end of the front lower support rod in a one-to-one correspondence, so that the angle between the first front corner rod and the rear lower support rod is 45°; The first rear corner rod is arranged in parallel with the first front corner rod at the same height, and two ends of the first rear corner rod are connected to the left end of the rear lower support rod and the right part of the front lower support rod in a one-to-one correspondence; The two ends of the second upper corner rod are connected to the right end of the rear upper support rod and the left part of the front upper support rod in a one-to-one correspondence, so that the included angle between the second upper corner rod and the first front corner rod is 90°; The second lower corner rod is arranged in parallel with the second upper corner rod, and two ends of the second lower corner rod are connected to the right end of the rear lower support rod and the left part of the front lower support rod in a one-to-one correspondence; The second rear corner bar is located parallel to and behind the height between the second upper corner bar and the second lower corner bar, and the second rear corner bar is installed at the front end of the left rear wall panel through a bracket; The left longitudinal paper-passing roller is arranged at the same height in front of the left side of the second rear corner rod, and the front end of the left longitudinal paper-passing roller is installed on the left support seat; The large triangular plate is arranged in front between the left front wall plate and the middle front wall plate; The left large paper clamping roller and the right large paper clamping roller are longitudinally installed just below the large triangle plate; The lower large paper feeding roller is installed in parallel and just below the right large paper clamping roller; The third corner bar is arranged parallel to the second lower corner bar at the same height, or is arranged vertically at the same height as the first rear corner bar, and the third corner bar is installed on the right rear end surface of the rear support plate through a bracket; The fourth corner bar is arranged parallel to the first rear corner bar at the same height, or is arranged vertically at the same height as the second lower corner bar, and the fourth corner bar is installed on the right rear end surface of the rear support plate through a bracket; The height of the right longitudinal paper-passing roller is between the height of the third corner rod and the height of the fourth corner rod, and the front end of the right longitudinal paper-passing roller is installed on the rear right side surface of the right front wall plate through a base; The small triangular plate is arranged in front between the middle front wall plate and the right front wall plate; The left small paper clamping roller and the right small paper clamping roller are longitudinally installed just below the small triangular plate; The lower small paper-passing roller is installed in parallel just below the left small paper-clamping roller; The large triangle and the small triangle can also be installed in reverse. When the large triangle and the small triangle are installed in reverse, an upper large paper feeding roller and an upper small paper feeding roller are provided one by one in the upper front of the large triangle and the upper front of the small triangle. The length of the base of the small triangle is half of the length of the base of the large triangle; A rear upper paper-passing roller is also connected between the front upper part of the left rear wall panel and the front upper part of the right rear wall panel, and the rear upper paper-passing roller and the slitting roller are located on the same horizontal plane; a rear lower paper-passing roller is also connected between the left rear wall panel and the right rear wall panel, and the rear lower paper-passing roller is located behind and below the rear upper paper-passing roller; The first front upper paper passing roller and the first front lower paper passing roller are connected one above and one below between the front part of the left front wall panel and the front part of the middle front wall panel; the second front upper paper passing roller and the second front lower paper passing roller are vertically installed one above and one below on the left side of the middle part of the right front wall panel.

2. A folding method for a 16-page folding machine, based on the 16-page folding machine as claimed in claim 1, characterized in that: The folding method includes the following folding modes: 4×4 pages of full front 16-page paper sheets, 2×8 pages of full front 16-page paper sheets, 4×4 pages of full back 16-page paper sheets, 2×8 pages of full back 16-page paper sheets, 4×4 pages of inverted 16-page paper sheets, and 2×8 pages of inverted 16-page paper sheets; When folding a 4×4 page full front 16-mo paper sheet: the third corner bar is set parallel to the second lower corner bar at the same height, and the fourth corner bar is set parallel to the first rear corner bar at the same height; the paper tape is split by the slitting device from the middle of the width into a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then passes the fourth corner bar from bottom to top, turns forward, and then enters the small triangular plate, is folded longitudinally by the small triangular plate, and is clamped by the left small paper clamping roller and the right small paper clamping roller; The right paper belt moves forward, then goes around the second lower corner bar from bottom to top, then goes around the second upper corner bar from bottom to top and still moves forward, then enters the large triangle plate, is folded longitudinally by the large triangle plate, and is clamped by the left large paper clamping roller and the right large paper clamping roller, finally goes down and around the lower large paper passing roller, then turns to the right, goes down and around the lower small paper passing roller, then turns downward and moves, overlaps with the longitudinally folded left paper belt, and is transported to the paper receiving part of the folding machine for cutting and collection; When folding a 2×8 page full front 16-mo paper sheet: the third corner bar is set parallel to the second lower corner bar at the same height, and the fourth corner bar is set parallel to the first rear corner bar at the same height; the paper tape is split by the slitting device from the middle of the width into a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then passes the fourth corner bar from bottom to top, turns forward, and then comes to the small triangle plate; The right-path paper tape moves forward and passes through the lower surface of the rear upper paper roller, then bypasses the first front upper paper roller from top to bottom and turns to move backward, then bypasses the second upper corner bar from top to bottom and turns to move right, then bypasses the right longitudinal paper roller from bottom to top and moves left, then bypasses the third corner bar from bottom to top and turns forward, and comes to the small triangular plate to overlap with the left-path paper tape, and finally the left-path paper tape and the right-path paper tape are longitudinally folded together by the small triangular plate and clamped by the left small clamping roller and the right small clamping roller, and then transported together to the paper receiving part of the folding machine for cutting and collection; When folding a 4×4 page full back 16-mo paper sheet: the third corner bar is vertically set at the same height as the first rear corner bar, and the fourth corner bar is vertically set at the same height as the second lower corner bar; the paper tape is split by the slitting device from the middle of the width into a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then bypasses the second rear corner bar from bottom to top and turns to the left, then bypasses the left longitudinal paper roller from top to bottom and turns to the right, then bypasses the first front corner bar from top to bottom and turns to the front, enters the large triangle plate, is longitudinally folded by the large triangle plate, and is clamped by the left large paper clamping roller and the right large paper clamping roller, finally bypasses the lower large paper roller downward and turns to the right, then bypasses the lower small paper roller downward and turns to move downward; The right paper belt moves forward, passes the first front upper paper roller from top to bottom, turns to move backward, then passes the second upper corner bar from top to bottom, turns to move right, passes the fourth corner bar from bottom to top, turns to move forward, and then enters the small triangular plate, is folded longitudinally by the small triangular plate, and is clamped by the left small paper clamping roller and the right small paper clamping roller, and finally overlaps with the left paper belt after longitudinal folding and is transported to the paper delivery part of the folding machine for cutting and collection; When folding a 2×8 page 16-mo paper sheet with the entire back side: the third corner bar is vertically set at the same height as the first rear corner bar, and the fourth corner bar is vertically set at the same height as the second lower corner bar; the paper tape is split by the slitting device from the middle of the width into a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then passes the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then passes the right longitudinal paper roller from bottom to top, turns to the left, passes the third corner bar from bottom to top, turns to the front, and then comes to the small triangle plate; The right paper tape moves forward, passes the first front upper paper roller from top to bottom, turns to move backward, then passes the second upper corner bar from top to bottom, turns to the right, passes the fourth corner bar from bottom to top, turns forward, and then comes to the small triangular plate to overlap with the left paper tape. Finally, the left and right paper tapes are longitudinally folded together by the small triangular plate and clamped by the left and right small clamping rollers, and then transported together to the paper delivery part of the folding machine for cutting and collection; When folding 4×4 pages of inverted 16-page paper sheets: the third corner bar is set parallel to the second lower corner bar at the same height, and the fourth corner bar is set parallel to the first rear corner bar at the same height; the large triangle and the small triangle are installed in reverse, and an upper large paper-passing roller and an upper small paper-passing roller are set one by one at the front upper part of the large triangle and the front upper part of the small triangle; the paper tape is split from the middle of the width by the slitting device to become a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then bypasses the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then bypasses the fourth corner bar from bottom to top, turns forward, and then bypasses the upper small paper-passing roller from top to bottom and rear to enter the small triangle, and is clamped by the left small paper clamping roller and the right small paper clamping roller after being longitudinally folded by the small triangle; The right paper belt moves forward, then goes around the second lower corner bar from bottom to top, then goes around the second upper corner bar from bottom to top and still moves forward, then goes around the upper large paper roller from top to bottom and enters the large triangle plate, is folded longitudinally by the large triangle plate and clamped by the left large paper clamping roller and the right large paper clamping roller, finally goes around the lower large paper roller downward and turns to the right, then goes around the lower small paper roller downward, overlaps with the left paper belt after longitudinal folding and is transported to the paper receiving part of the folding machine for cutting and collection; When folding 2×8 pages of inverted 16-page paper sheets: the third corner bar is set parallel to the second lower corner bar at the same height, and the fourth corner bar is set parallel to the first rear corner bar at the same height; the large triangle and the small triangle are installed in reverse, and an upper large paper-passing roller and an upper small paper-passing roller are set one by one at the front upper part of the large triangle and the front upper part of the small triangle; the paper tape is split by the slitting device from the middle of the width to become a left-path paper tape and a right-path paper tape; the left-path paper tape moves forward, then bypasses the first front corner bar from bottom to top, turns to the right from the upper surface of the first rear corner bar, then bypasses the fourth corner bar from bottom to top, turns forward, and then comes to the upper small paper-passing roller; The right paper tape moves forward, bypasses the first front paper roller from top to bottom and then turns backward, then bypasses the second upper corner bar from top to bottom and turns to the right, then bypasses the right longitudinal paper roller from bottom to top to move left, then bypasses the third corner bar from bottom to top and turns forward, then reaches the upper small paper roller, overlaps with the left paper tape, bypasses the upper small paper roller from top to bottom and then enters the small triangular plate, the left and right paper tapes are folded longitudinally by the small triangular plate and clamped by the left and right small paper clamping rollers, and then transported together to the paper delivery section of the folder for cutting and collection.

3. The folding method of a 16-page folding machine according to claim 2, characterized in that: When performing the folding method of the 4×4 pages full front 16-fold paper sheet, the 2×8 pages full front 16-fold paper sheet, the 4×4 pages full back 16-fold paper sheet, the 2×8 pages full back 16-fold paper sheet, the 4×4 pages inverted 16-fold paper sheet, and the 2×8 pages inverted 16-fold paper sheet, after the paper tape passes through the slitting device to become the left-path paper tape and the right-path paper tape, the left-path paper tape moves forward and first passes through the lower surface of the rear lower paper roller; The right-path paper tape travels forward and passes over the lower surface of the rear upper paper roller.

Images