Auxiliary folding mechanism for folding machine

Abstract

The utility model relates to an auxiliary folding mechanism for a folding machine, which belongs to the technical field of folding machines and comprises a belt conveying frame, a movement limiting mechanism used for limiting movement of paper is arranged at the left end of the upper surface of the belt conveying frame, and a first fixing frame is fixed at the right end of the upper surface of the belt conveying frame. An electric push rod is fixed to the middle of the inner top wall of the first fixing frame, a folding knife is arranged on the lower side of the electric push rod, a dismounting and replacing mechanism used for replacing the folding knife is arranged on the upper surface of the folding knife, and second fixing frames are fixed to the left end and the right side of the upper surface of the belt conveying frame. According to the auxiliary folding mechanism for the folding machine, through mutual cooperation of all structures in the arranged movable limiting mechanism, paper of different sizes can be limited, so that deviation of the paper can be avoided, the folding effect of the paper is guaranteed, the situation that the paper is not tidily folded is avoided, and the practical effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding machines, in particular to an auxiliary folding mechanism for a folding machine. Background Art

[0002] A folding machine is a modern printing device that emerged along with the modern printing industry. Modern printing factories usually include three processing procedures: pre-press, printing, and post-press. The main carrier medium is paper. The folding machine is mainly used for folding various different sizes and thicknesses of paper within the designed range, and is suitable for large-scale folding of fast printing centers, production enterprises, official documents, and business letters.

[0003] By searching, it is found that the Chinese patent publication number: CN220723088U discloses an auxiliary folding mechanism for a folding machine, including a main frame body and a folding frame. A fixed frame is fixedly arranged at the front end of the main frame body. A plurality of paper pressing rollers are arranged inside the fixed frame. An adjusting frame is arranged above the fixed frame. A fixed conveying belt and an adjusting conveying belt are respectively arranged inside the fixed frame and the adjusting frame. The folding frame is arranged above the main frame body. Connecting guide rails are fixedly arranged on both sides of the main frame body. An activity mounting plate is slidably connected inside the connecting guide rails. One of the paper pressing rollers is rotatably connected to the main frame body, and the other paper pressing roller is rotatably connected to the activity mounting plate. A first adjusting screw rod is sleeved at the middle part of the connecting guide rail. In this utility model, the arranged paper pressing rollers and the paper conveyor belts can be adjusted, and the adjustment is convenient, and it can adapt to folding of papers with different thicknesses. However, when small-sized papers pass through the horizontal folding knife, the horizontal folding knife will press down on the papers, which may cause the movement of the papers to deviate, and then cause the folding of the papers to be uneven, reducing the folding effect of the papers. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an auxiliary folding mechanism for a folding machine, which has the advantages of being able to limit the movement of papers, etc., and solves the problem that when small-sized papers pass through the horizontal folding knife, the horizontal folding knife will press down on the papers, which may cause the movement of the papers to deviate, and then cause the folding of the papers to be uneven, reducing the folding effect of the papers.

[0005] To achieve the above object, the present utility model provides the following technical solution: An auxiliary folding mechanism for a folding machine, including a belt conveyor frame. At the left end of the upper surface of the belt conveyor frame, there is a moving limit mechanism for limiting the movement of paper. At the right end of the upper surface of the belt conveyor frame, a first fixed frame is fixed. In the middle of the inner top wall of the first fixed frame, an electric push rod is fixed. Below the electric push rod, there is a folding knife. On the upper surface of the folding knife, there is a replacement mechanism for replacing the folding knife. At the left end and the right side of the upper surface of the belt conveyor frame, second fixed frames are both fixed;

[0006] The moving limit mechanism includes a mounting plate fixed at the left end of the upper surface of the belt conveyor frame. Between the opposite sides of the front and rear side walls of the inner cavity of the mounting plate, a bidirectional screw rod is rotatably connected through bearings. In the middle of the outer surface of the bidirectional screw rod, a driven bevel gear is fixed. On the left side of the driven bevel gear, a driving bevel gear is meshed and connected. At the front and rear ends of the outer surface of the bidirectional screw rod, screw sleeves are both threadedly connected. On the right side of the screw sleeve, a connecting block is fixed. The right side of the connecting block penetrates through the right side wall of the inner cavity of the mounting plate and extends to the right side of the mounting plate and is fixed with a limiting plate.

[0007] Furthermore, the cross-sectional shapes of the first fixed frame and the second fixed frame are both inverted U-shaped. At the bottom between the opposite sides of the front and rear side walls of the inner cavity of the first fixed frame, a limiting ring is fixed. The size of the inner cavity of the limiting ring is adapted to the size of the folding knife.

[0008] Furthermore, on the upper surface of the second fixed frame, a rotating screw rod is threadedly connected, and one end of the rotating screw rod penetrates through and extends to the inner cavity of the second fixed frame. On the lower surface of the rotating screw rod, a U-shaped plate is rotatably connected through a bearing. Between the opposite sides of the front and rear side walls of the inner cavity of the U-shaped plate, a first flattening roller is rotatably connected through a bearing. At the bottom between the opposite sides of the front and rear side walls of the inner cavity of the second fixed frame on the right side, a second flattening roller is rotatably connected through a bearing.

[0009] Furthermore, a driving rod is fixed in the inner cavity of the driving bevel gear. The left side of the driving rod penetrates through the mounting plate and extends to the left side of the mounting plate and is fixed with a handle. On the upper surface of the frame of the belt conveyor, connecting vertical blocks are evenly fixed. Between the opposite sides of the connecting vertical block and the limiting plate, a telescopic rod is fixed.

[0010] Furthermore, a limiting rod is fixed on the lower surface of the screw sleeve. In the middle of the inner bottom wall of the mounting plate, a limiting groove is opened. The limiting rod makes a linear motion back and forth in the inner cavity of the limiting groove.

[0011] Further, the replacement mechanism includes a clamping block fixed on the upper surface of the folding knife. A connecting plate is fixed on the lower surface of the piston rod of the electric push rod. T-shaped cavities are provided at both the left and right ends of the inner cavity of the connecting plate. Telescopic sleeve rods are fixed on one side of the two T-shaped cavities facing each other. Springs are movably sleeved on the outer surfaces of the telescopic sleeve rods. Linking plates are fixed on one side of the two telescopic sleeve rods facing each other. Plug rods are fixed at both the upper and lower ends of one side of the two linking plates facing each other.

[0012] Further, slots are provided at both the top and bottom of the left and right sides of the clamping block. The inner diameter of the slot is adapted to the outer diameter of the plug rod. Both ends of the spring are fixed between the side of the T-shaped cavity and the linking plate facing each other.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] 1. For the auxiliary folding mechanism of this folding machine, through the mutual cooperation between the various structures in the moving limit mechanism, papers of different sizes can be limited, thereby avoiding their deviation, ensuring the folding effect of the paper, preventing the situation of uneven folding of the paper, and greatly improving the practical effect.

[0015] 2. For the auxiliary folding mechanism of this folding machine, through the mutual cooperation between the clamping block, the connecting plate, the T-shaped cavity, the telescopic sleeve rod, the linking plate and the plug rod, it is convenient for the staff to replace the folding knife when the folding knife is damaged, avoiding affecting the folding efficiency of the folding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the moving limit mechanism of the present utility model;

[0018] Figure 3 is a schematic cross-sectional view of a part of the moving limit mechanism of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the replacement mechanism of the present utility model.

[0020] In the figure: 1 belt conveyor frame, 2 moving limit mechanism, 201 mounting plate, 202 bidirectional screw, 203 driven bevel gear, 204 driving bevel gear, 205 screw sleeve, 206 connecting block, 207 limiting plate, 3 first fixing frame, 4 electric push rod, 5 folding knife, 6 replacement mechanism, 601 clamping block, 602 connecting plate, 603 T-shaped cavity, 604 telescopic sleeve rod, 605 linking plate, 606 plug rod, 7 second fixing frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 , an auxiliary folding mechanism for a folder in this embodiment, includes a belt conveyor frame 1. A moving limit mechanism 2 for limiting the movement of paper is provided at the left end of the upper surface of the belt conveyor frame 1. A first fixing frame 3 is fixed at the right end of the upper surface of the belt conveyor frame 1. An electric push rod 4 is fixed in the middle of the inner top wall of the first fixing frame 3. A folding knife 5 is provided below the electric push rod 4. A replacement mechanism 6 for replacing the folding knife 5 is provided on the upper surface of the folding knife 5. Second fixing frames 7 are fixed at both the left end and the right side of the upper surface of the belt conveyor frame 1.

[0023] Among them, the cross-sectional shapes of the first fixing frame 3 and the second fixing frame 7 are both inverted U-shaped. A limiting ring is fixed at the bottom between the opposite sides of the front and rear side walls of the inner cavity of the first fixing frame 3. The size of the inner cavity of the limiting ring is adapted to the size of the folding knife 5.

[0024] In addition, a rotating screw rod whose one end penetrates and extends into the inner cavity of the second fixing frame 7 is threadedly connected to the upper surface of the second fixing frame 7. The lower surface of the rotating screw rod is rotatably connected to a U-shaped plate through a bearing. A first flattening roller is rotatably connected between the opposite sides of the front and rear side walls of the inner cavity of the U-shaped plate through a bearing. A second flattening roller is rotatably connected to the bottom between the opposite sides of the front and rear side walls of the inner cavity of the second fixing frame 7 on the right side through a bearing.

[0025] It should be noted that chutes are provided at the tops of the opposite sides of the front and rear side walls of the inner cavity of the second fixing frame 7. Sliders are fixed on both the front and rear sides of the U-shaped plate. The sliders move linearly up and down in the inner cavity of the chute, so as to facilitate the staff to adjust the first flattening roller to an appropriate height according to the thickness of the paper.

[0026] Please refer to Figures 2 to 3, in order to limit papers of different sizes, the movable limiting mechanism 2 in this embodiment includes a mounting plate 201 fixed to the left end of the upper surface of the belt conveyor frame 1. A bidirectional screw 202 is rotatably connected between the opposite sides of the front and rear side walls of the inner cavity of the mounting plate 201 through bearings. A driven bevel gear 203 is fixed in the middle of the outer surface of the bidirectional screw 202. A driving bevel gear 204 is meshed and connected to the left side of the driven bevel gear 203. Threaded sleeves 205 are respectively threadedly connected to the front and rear ends of the outer surface of the bidirectional screw 202. The rotation of the driving bevel gear 204 causes the driven bevel gear 203 meshed with it to rotate. The rotation of the driven bevel gear 203 drives the bidirectional screw 202 in its inner cavity to rotate. The rotation of the bidirectional screw 202 causes the threaded sleeves 205 threadedly connected to its surface to move. A connecting block 206 is fixed to the right side of the threaded sleeve 205. The right side of the connecting block 206 penetrates through the right side wall of the inner cavity of the mounting plate 201 and extends to the right side of the mounting plate 201 and is fixed with a limiting plate 207. The movement of the threaded sleeve 205 drives the connecting block 206 fixed to its right side to move. The movement of the connecting block 206 causes the limiting plate 207 to move. Thus, the relative movement of the two limiting plates 207 can reduce the distance between the two limiting plates 207.

[0027] Wherein, a driving rod is fixed in the inner cavity of the driving bevel gear 204. The left side of the driving rod penetrates through the mounting plate 201 and extends to the left side of the mounting plate 201 and is fixed with a handle. Connecting vertical blocks are uniformly fixed to the upper surface of the frame of the belt conveyor frame 1. An expansion rod is fixed between the opposite sides of the connecting vertical block and the limiting plate 207.

[0028] It should be noted that a limiting rod is fixed to the lower surface of the threaded sleeve 205. Limiting grooves are respectively opened in the middle of the inner bottom wall of the mounting plate 201. The limiting rod makes a straight line movement back and forth in the inner cavity of the limiting groove, which can limit the movement of the limiting plate 207.

[0029] In addition, the provided movable limiting mechanism 2 can limit papers of different sizes, thereby avoiding their deviation, ensuring the folding effect of the papers, and avoiding the situation of uneven folding of the papers.

[0030] Please refer to Figure 4, To facilitate the replacement of the folding knife 5 by the staff, the replacement mechanism 6 in this embodiment includes a clamping block 601 fixed on the upper surface of the folding knife 5. A connecting plate 602 is fixed on the lower surface of the piston rod of the electric push rod 4. T-shaped cavities 603 are opened at both the left and right ends of the inner cavity of the connecting plate 602. Telescopic sleeve rods 604 are fixed on one side of the two T-shaped cavities 603 facing each other. A spring is movably sleeved on the outer surface of the telescopic sleeve rod 604. Linkage plates 605 are fixed on one side of the two telescopic sleeve rods 604 facing each other. Plug rods 606 are fixed at both the upper and lower ends of one side of the two linkage plates 605 facing each other. Move the two linkage plates 605 to the side away from the vertical central axis of the first fixing frame 3. The movement of the linkage plates 605 drives the movement of the plug rods 606 and shortens the telescopic sleeve rods 604. The spring is compressed until the plug rods 606 completely move out of the inner cavity of the slot, and the limit on the clamping block 601 fixed on the upper surface of the folding knife 5 can be released.

[0031] Among them, slots are opened at both the top and bottom of the left and right sides of the clamping block 601. The inner diameter of the slot is adapted to the outer diameter of the plug rod 606. Both ends of the spring are fixed between the side of the T-shaped cavity 603 facing the linkage plate 605. A clamping hole is opened on the upper surface of the connecting plate 602. The inner diameter of the clamping hole is adapted to the outer diameter of the clamping block 601.

[0032] It can be understood that pull down the folding knife 5, pull out the clamping block 601 from the inner cavity of the connecting plate 602, then replace the required folding knife 5 and insert it into the inner cavity of the connecting plate 602. Release the limit on the linkage plate 605. After the spring is unrestricted, it drives the telescopic sleeve rod 604 to extend, thereby pushing the linkage plate 605 to move, so that the plug rod 606 enters the inner cavity of the slot, and the folding knife 5 can be limited and fixed again.

[0033] It should be noted that by setting the replacement mechanism 6, when the folding knife 5 is damaged, it is convenient for the staff to replace the folding knife 5 and avoid affecting the folding efficiency of the folding machine.

[0034] The working principle of the above embodiment is as follows:

[0035] (1) Place the paper on the belt conveyor frame 1, and then rotate the driving rod. The rotation of the driving rod causes the driving bevel gear 204 to rotate. The rotation of the driving bevel gear 204 causes the driven bevel gear 203 meshed with it to rotate. The rotation of the driven bevel gear 203 drives the bidirectional screw 202 in its inner cavity to rotate. The rotation of the bidirectional screw 202 causes the screw sleeve 205 threadedly connected to its surface to move. The movement of the screw sleeve 205 drives the connecting block 206 fixed on its right side to move. The movement of the connecting block 206 causes the limiting plate 207 to move. Thus, the relative movement of the two limiting plates 207 can reduce the distance between the two limiting plates 207 and drive the telescopic rod to extend, and the movement of the limiting plate 207 can be limited until it is adjusted to a suitable distance to limit the paper on the upper surface of the belt of the belt conveyor frame 1, so as to avoid paper deviation.

[0036] (2) When it is necessary to replace the folding knife 5, the two linkage plates 605 can be moved to the side away from the vertical central axis of the first fixing frame 3. The movement of the linkage plates 605 drives the insertion rod 606 to move and shortens the telescopic sleeve rod 604, and the spring is compressed until the insertion rod 606 completely moves out of the inner cavity of the slot, so as to release the limit on the clamping block 601 fixed on the upper surface of the folding knife 5. Then, pull down the folding knife 5 to draw out the clamping block 601 from the inner cavity of the connecting plate 602. Then, replace the required folding knife 5 and insert it into the inner cavity of the connecting plate 602. Release the limit on the linkage plate 605. After the spring is unrestricted, it drives the telescopic sleeve rod 604 to extend, thereby pushing the linkage plate 605 to move, so that the insertion rod 606 enters the inner cavity of the slot, and the folding knife 5 can be limited and fixed again.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An auxiliary folding mechanism for a folding machine, comprising a belt conveyor frame (1), characterized in that: At the left end of the upper surface of the belt conveyor frame (1), there is a moving limit mechanism (2) for limiting the movement of paper. At the right end of the upper surface of the belt conveyor frame (1), a first fixed frame (3) is fixed. In the middle of the inner top wall of the first fixed frame (3), an electric push rod (4) is fixed. Below the electric push rod (4), there is a folding knife (5). On the upper surface of the folding knife (5), there is a replacement mechanism (6) for replacing the folding knife (5). At both the left end and the right side of the upper surface of the belt conveyor frame (1), second fixed frames (7) are fixed. The moving limit mechanism (2) includes a mounting plate (201) fixed at the left end of the upper surface of the belt conveyor frame (1). Between the opposite sides of the front and rear side walls of the inner cavity of the mounting plate (201), a bidirectional screw rod (202) is rotatably connected through bearings. In the middle of the outer surface of the bidirectional screw rod (202), a driven bevel gear (203) is fixed. On the left side of the driven bevel gear (203), a driving bevel gear (204) is meshed and connected. At both the front and rear ends of the outer surface of the bidirectional screw rod (202), screw sleeves (205) are threadedly connected. On the right side of the screw sleeve (205), a connecting block (206) is fixed. The right side of the connecting block (206) penetrates through the right side wall of the inner cavity of the mounting plate (201) and extends to the right side of the mounting plate (201) and is fixed with a limiting plate (207).

2. The auxiliary folding mechanism for a folding machine according to claim 1, wherein: The cross-sectional shapes of the first fixed frame (3) and the second fixed frame (7) are both inverted U-shaped. At the bottom between the opposite sides of the front and rear side walls of the inner cavity of the first fixed frame (3), a limiting ring is fixed. The size of the inner cavity of the limiting ring is adapted to the size of the folding knife (5).

3. The auxiliary folding mechanism for a folding machine according to claim 1, wherein: On the upper surface of the second fixed frame (7), a rotating screw rod is threadedly connected, and one end of the rotating screw rod penetrates and extends into the inner cavity of the second fixed frame (7). On the lower surface of the rotating screw rod, a U-shaped plate is rotatably connected through a bearing. Between the opposite sides of the front and rear side walls of the inner cavity of the U-shaped plate, a first flattening roller is rotatably connected through a bearing. At the bottom between the opposite sides of the front and rear side walls of the inner cavity of the second fixed frame (7) on the right side, a second flattening roller is rotatably connected through a bearing.

4. An auxiliary folding mechanism for a folding machine according to claim 1, characterized in that: In the inner cavity of the driving bevel gear (204), a driving rod is fixed. The left side of the driving rod penetrates through the mounting plate (201) and extends to the left side of the mounting plate (201) and is fixed with a handle. On the upper surface of the frame of the belt conveyor frame (1), connecting vertical blocks are evenly fixed. Between the opposite sides of the connecting vertical block and the limiting plate (207), a telescopic rod is fixed.

5. The auxiliary folding mechanism for a folding machine according to claim 1, wherein: On the lower surface of the screw sleeve (205), a limiting rod is fixed. In the middle of the inner bottom wall of the mounting plate (201), a limiting groove is opened. The limiting rod makes a linear motion back and forth in the inner cavity of the limiting groove.

6. The auxiliary folding mechanism for a folding machine according to claim 1, characterized in that: The replacement mechanism (6) includes a clamping block (601) fixed on the upper surface of the folding knife (5). A connecting plate (602) is fixed on the lower surface of the piston rod of the electric push rod (4). T-shaped cavities (603) are respectively formed at the left and right ends of the inner cavity of the connecting plate (602). Telescopic sleeve rods (604) are respectively fixed on one side of the two T-shaped cavities (603) facing each other. Springs are movably sleeved on the outer surfaces of the telescopic sleeve rods (604). Linkage plates (605) are respectively fixed on one side of the two telescopic sleeve rods (604) facing each other. Plug rods (606) are respectively fixed at the upper and lower ends of one side of the two linkage plates (605) facing each other.

7. The auxiliary folding mechanism for a folding machine according to claim 6, characterized in that: Slots are respectively formed at the top and bottom of the left and right sides of the clamping block (601). The inner diameter of the slots is adapted to the outer diameter of the plug rods (606). The two ends of the spring are fixed between one side of the T-shaped cavity (603) and the linkage plate (605) facing each other.

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