Set plate folding device of web press

Abstract

The utility model relates to the technical field of printing machines, and discloses a web printing machine set square folding device which comprises a limiting mechanism, the limiting mechanism comprises two sliding rails symmetrically installed at the top of a storage box and a protection box arranged at one ends of the multiple sliding rails, and second bidirectional lead screws are rotationally installed in the sliding rails; limiting plates are symmetrically installed on every two second two-way lead screws in a threaded mode, first placing plates are installed on the opposite sides of the limiting plates, one ends of the second two-way lead screws extend into the protection box to be fixedly provided with driven bevel gears, and a rotating rod is rotationally installed in the protection box; and a driving bevel gear matched with the driven bevel gear for use is mounted on the rotating rod. The printing paper can be limited through the four limiting plates, the situation that the printing paper is obliquely placed on the folding device is prevented, and the folding effect of the printing paper is improved; and therefore, the distance between the two limiting plates can be adjusted, and printing paper of different sizes can be conveniently limited.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a triangular plate folding device of a web printing machine. Background Art

[0002] A printing press is a machine for printing text and images. Modern printing presses are generally composed of mechanisms such as plate mounting, inking, embossing, and paper feeding (including folding). Its working principle is: first, the text and image to be printed are made into a printing plate, which is then mounted on a printing press. Then, ink is applied to the places on the printing plate where the text and image are, either manually or by a printing press. Then, the ink is directly or indirectly transferred to paper or other substrates (such as textiles, metal plates, plastics, leather, wood boards, glass, and ceramics), thereby replicating a printed product identical to the printing plate. The invention and development of the printing press has played an important role in the spread of human civilization and culture.

[0003] Currently, in the process of folding printing paper, the printing paper is usually tilted when placed on the folding device, which makes it easy for the printing paper to be folded tilted, thereby reducing the folding effect of the printing paper. The current triangular plate folding device of the roll paper printing machine does not have the function of straightening the printing paper before folding it. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art in the above-mentioned background technology, the purpose of the present utility model is to provide a triangular plate folding device for a web printing press to solve the problem raised in the above-mentioned background technology that some triangular plate folding devices for web printing presses currently on the market do not have the function of straightening the printing paper before folding it.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A triangular plate folding device for a web printing press comprises a storage box, a U-shaped frame is fixed on the top of the storage box, a pressing mechanism is installed on the upper part of the U-shaped frame, an extrusion mechanism used in conjunction with the pressing mechanism is installed on the storage box, and both ends of the extrusion mechanism are connected to the top of the storage box through an adjusting component and a sliding component respectively, and a limiting mechanism is symmetrically installed on the top of the storage box with respect to the extrusion mechanism;

[0009] The pressing mechanism comprises a hydraulic cylinder fixed on the top of the "U"-shaped frame, and the telescopic end of the hydraulic cylinder passes through the top of the "U"-shaped frame and is fixedly connected with a triangular pressing block;

[0010] The squeezing mechanism comprises a squeezing roller symmetrically mounted on the storage box, a threaded seat and a sliding seat are rotatably mounted on both ends of the squeezing roller, and a motor connected to one end of the squeezing roller is mounted on one side of the sliding seat;

[0011] The limiting mechanism includes two slide rails symmetrically mounted on the top of the storage box and a protection box arranged at one end of the plurality of slide rails, a second bidirectional screw rod is rotatably mounted inside the slide rail, a limiting plate is symmetrically threadedly mounted on every two of the second bidirectional screw rods, and a first placement plate is mounted on the opposite side of the limiting plate.

[0012] One end of the second bidirectional screw extends to the interior of the protection box and is fixed with a driven bevel gear. A rotating rod is rotatably installed in the protection box, and a driving bevel gear used in conjunction with the driven bevel gear is installed on the rotating rod.

[0013] Preferably, the adjustment assembly comprises a first rotating seat symmetrically mounted on the top of the storage box with respect to the "U"-shaped frame, the same second bidirectional screw is rotatably mounted on the two first rotating seats, one end of the second bidirectional screw passes through the first rotating seat and is fixed with a rotating handle, and two threaded seats are symmetrically threadedly mounted on the second bidirectional screw;

[0014] Furthermore, the sliding assembly includes a second sliding seat symmetrically mounted on the top of the storage box with respect to the "U"-shaped frame, the same sliding rod is rotatably mounted on the two second sliding seats, and the two sliding seats are symmetrically slidably mounted on the sliding rod;

[0015] Further, a fixing assembly is installed on one of the first rotating seats, and the fixing assembly includes a threaded barrel fixed on the first rotating seat and a nut threadedly installed on the threaded barrel, and the bottom end of the nut is in conflict with the outer surface of the second bidirectional lead screw;

[0016] Furthermore, a second placement plate is installed on one side of the sliding seat, and the motor is installed on the top of the second placement plate.

[0017] Furthermore, the top of the first placement plate is marked with scale values.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) The utility model sets a limiting mechanism on the top of the storage box, which can limit the printing paper through four limiting plates, preventing the printing paper from being tilted on the folding device, thereby improving the folding effect of the printing paper; the distance between the two limiting plates can also be adjusted, which is convenient for limiting the printing paper of different sizes, thereby improving the use range of the device.

[0021] (2) The utility model uses an adjustment component in the extrusion mechanism to drive the two threaded seats to move in opposite directions through the second bidirectional screw, thereby driving the extrusion rollers to move through the threaded seats, so that the distance between the two extrusion rollers can be adjusted, which is convenient for folding printing papers of different thicknesses or multiple printing papers at the same time, thereby further improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a partial structural schematic diagram of the limit assembly of the utility model;

[0024] Figure 3 It is a schematic diagram of the partially enlarged structure of point A of the present utility model.

[0025] In the figure: 1. storage box; 2. "U"-shaped frame; 3. hydraulic cylinder; 4. triangular pressing block; 5. squeezing roller; 6. threaded seat; 7. sliding seat; 8. motor; 9. first placement plate; 10. second bidirectional lead screw; 11. first rotating seat; 12. rotating handle; 13. slide rod; 14. second sliding seat; 151. slide rail; 152. protection box; 153. second bidirectional lead screw; 154. limit plate; 155. second placement plate; 156. driven bevel gear; 157. driving bevel gear; 16. threaded cylinder; 17. nut. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-3 As shown, the utility model provides a triangular plate folding device for a web printing press; it comprises a storage box 1, a square hole is opened on the top of the storage box 1, a "U"-shaped frame 2 is fixed on the top of the storage box 1, and a pressing mechanism is installed at the center of the "U"-shaped frame 2;

[0028] The pressing mechanism includes a hydraulic cylinder 3 fixed at the top center of the "U"-shaped frame 2, and the telescopic end of the hydraulic cylinder 3 passes through the "U"-shaped frame 2 and is fixedly connected to a triangular pressing block 4; through the setting of the pressing mechanism, it is convenient to press down the printing paper to ensure the folding of the printing paper;

[0029] Specifically, the storage box 1 is equipped with an extrusion mechanism used in conjunction with the pressing mechanism, and both ends of the extrusion mechanism are connected to the top of the storage box 1 through an adjustment component and a sliding component respectively;

[0030] Specifically, the squeezing mechanism includes a squeezing roller 5 symmetrically mounted on the storage box 1, and the two ends of the squeezing roller 5 are rotatably mounted on the threaded seat 6 and the sliding seat 7 respectively. A first placement plate 9 is fixed to one end of the sliding seat 7. The setting of the first placement plate 9 plays a role in fixing the motor 8. The top of the first placement plate 9 is fixed with a motor 8. In order to facilitate the control of the speed of the motor 8, the motor 8 is preferably a "servo motor". The output end of the motor 8 is fixedly connected to one end of the squeezing roller 5; through the setting of the squeezing mechanism, the printing paper can be squeezed to play a role in folding the printing paper;

[0031] Specifically, the adjustment component includes a first rotating seat 11 symmetrically installed on one end of the top of the storage box 1 with respect to the "U"-shaped frame 2. The same second bidirectional lead screw 10 is rotatably installed on the two first rotating seats 11, and both ends of the second bidirectional lead screw 10 are smooth and have no threads. One end of the second bidirectional lead screw 10 passes through the first rotating seat 11 and is fixed with a rotating handle 12. Through the setting of the rotating handle 12, it is convenient to rotate the second bidirectional lead screw 10, which provides convenience for the staff. The two threaded seats 6 are symmetrically threadedly installed on the second bidirectional lead screw 10. Through the setting of the adjustment component, it is convenient to adjust the distance between the two extrusion rollers 5, so as to facilitate the folding of printing paper of different thicknesses, thereby improving the use effect of the device.

[0032] More specifically, a fixing assembly is installed on one of the first rotating seats 11, and the fixing assembly includes a threaded barrel 16 fixed on the first rotating seat 11 and a nut 17 threadedly installed on the threaded barrel 16, and the bottom end of the nut 17 conflicts with the outer surface of the second bidirectional lead screw 10; through the setting of the fixing assembly, the second bidirectional lead screw 10 is fixed to prevent the second bidirectional lead screw 10 from rotating itself;

[0033] Specifically, the sliding assembly includes a second sliding seat 14 symmetrically installed at the other end of the top of the storage box 1 with respect to the "U"-shaped frame 2, and the same sliding rod 13 is rotatably installed on the two second sliding seats 14. The two sliding seats 7 are symmetrically slidably installed on the sliding rod 13. Through the setting of the sliding assembly, the sliding assembly can limit the two squeezing rollers 5 to ensure that the two squeezing rollers 5 can be adjusted.

[0034] Specifically, a limiting mechanism is symmetrically installed on the top of the storage box 1 with respect to the squeezing mechanism; the limiting mechanism includes two slide rails 151 symmetrically installed on the top of the storage box 1 and a same protective box 152 arranged at one end of the plurality of slide rails 151, a second bidirectional screw rod 153 is rotatably installed inside the slide rail 151, and a limiting plate 154 is symmetrically threadedly installed on every two of the second bidirectional screw rods 153, and a second placement plate 155 is installed on the opposite side of the limiting plate 154, and a scale value is marked on the top of the second placement plate 155, and the setting of the scale value facilitates the observation of the position of the printing paper. In order to bring convenience to the staff, one end of the second bidirectional screw rod 153 extends to the interior of the protection box 152 and is fixed with a driven bevel gear 156. A rotating rod is rotatably installed in the protection box 152, and one end of the rotating rod passes through the protection box 152 and is fixed with a rotating disk. The setting of the rotating disk facilitates the rotation of the rotating rod, thereby providing convenience to the staff. An active bevel gear 157 used in conjunction with the driven bevel gear 156 is installed on the rotating rod; through the setting of the limiting mechanism, the placed printing paper can be limited by the limiting mechanism to prevent the printing paper from being tilted on the folding device.

[0035] When folding the printing paper, first open the nut 17 so that the nut 17 rotates on the threaded seat 16, causing the nut 17 to lose the squeezing force on the second bidirectional lead screw 10, and then rotate the handle 12 to drive the second bidirectional lead screw 10 to rotate, so that the second bidirectional lead screw 10 drives the squeezing roller 5 to be adjusted through the two threaded seats 6, so that the spacing between the two squeezing rollers 5 can be adjusted according to the thickness of the printing paper, and then rotate the rotating rod so that the rotating rod drives the driven bevel gear 156 to rotate through a plurality of active bevel gears 157, so that the driven bevel gear 156 drives the second bidirectional lead screw 153 to rotate, so that the second bidirectional lead screw 153 can drive the spacing between the two limit plates 154 to be adjusted. The printing paper is placed on the second placement plate 155 and is limited by two limit plates 154 to prevent the printing paper from tilting on the storage box 1. The hydraulic cylinder 3 and the motor 8 are then turned on at the same time, so that the output end of the motor 8 drives the squeezing roller 5 to rotate, so that the two squeezing rollers 5 rotate in opposite directions, and the telescopic end of the hydraulic cylinder 3 drives the triangular pressing block 4 to move downward, so that the bottom end of the triangular pressing block 4 presses the printing paper downward, so that when the printing paper is pressed between the two squeezing rollers 5, the two squeezing rollers 5 rotate downward and drive the printing paper to fold downward, so that the folded printing paper passes through the square hole and falls into the storage box, thereby completing the work of folding the printing paper.

[0036] The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

Claims

1. A set-plate folding device for a web-fed printing press, comprising a storage box (1), characterized in that: A "U"-shaped frame (2) is fixed on the top of the storage box (1), a downward pressing mechanism is installed on the upper part of the "U"-shaped frame (2), an extrusion mechanism used in conjunction with the downward pressing mechanism is installed on the storage box (1), and the two ends of the extrusion mechanism are respectively connected to the top of the storage box (1) through an adjustment component and a sliding component, and a limit mechanism is symmetrically installed on the top of the storage box (1) with respect to the extrusion mechanism; The pressing mechanism comprises a hydraulic cylinder (3) fixed on the top of the "U"-shaped frame (2); the telescopic end of the hydraulic cylinder (3) passes through the top of the "U"-shaped frame (2) and is fixedly connected to a triangular pressing block (4); The squeezing mechanism comprises a squeezing roller (5) symmetrically mounted on the storage box (1), a threaded seat (6) and a sliding seat (7) being rotatably mounted on both ends of the squeezing roller (5), and a motor (8) connected to one end of the squeezing roller (5) being mounted on one side of the sliding seat (7); The limiting mechanism comprises two slide rails (151) symmetrically mounted on the top of the storage box (1) and a protection box (152) arranged at one end of the plurality of slide rails (151); a second bidirectional screw rod (153) is rotatably mounted inside the slide rail (151); a limiting plate (154) is symmetrically threadedly mounted on each of the two second bidirectional screw rods (153); a first placement plate (155) is mounted on the opposite side of the limiting plate (154); one end of the second bidirectional screw rod (153) extends to the inside of the protection box (152) and is fixed with a driven bevel gear (156); a rotating rod is rotatably mounted inside the protection box (152); and a driving bevel gear (157) used in conjunction with the driven bevel gear (156) is mounted on the rotating rod.

2. The set plate folding device of a web printing press according to claim 1, characterized in that: The adjustment assembly comprises a first rotating seat (11) symmetrically mounted on the top of the storage box (1) with respect to the "U"-shaped frame (2); the same second bidirectional lead screw (10) is rotatably mounted on the two first rotating seats (11); one end of the second bidirectional lead screw (10) passes through the first rotating seat (11) and is fixed with a rotating handle (12); and two threaded seats (6) are symmetrically threadedly mounted on the second bidirectional lead screw (10).

3. The set plate folding device of a web printing press according to claim 1, characterized in that: The sliding assembly comprises a second sliding seat (14) symmetrically mounted on the top of the storage box (1) with respect to the "U"-shaped frame (2), the same sliding rod (13) being rotatably mounted on the two second sliding seats (14), and the two sliding seats (7) being symmetrically slidably mounted on the sliding rod (13).

4. The set plate folding device of a web printing press according to claim 2, characterized in that: A fixing assembly is installed on one of the first rotating seats (11), and the fixing assembly includes a threaded barrel (16) fixed on the first rotating seat (11) and a nut (17) threadedly installed on the threaded barrel (16), and the bottom end of the nut (17) is in conflict with the outer surface of the second bidirectional lead screw (10).

5. The set plate folding device of a web printing press according to claim 1, characterized in that: A second placement plate (9) is installed on one side of the sliding seat (7), and the motor (8) is installed on the top of the second placement plate (9).

6. The set plate folding device of a web printing press according to claim 1, characterized in that: The top of the first placement plate (155) is marked with scale values.

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