A paper cutting device for cutting a notch on paper

Abstract

The invention discloses a paper cutting device for cutting a notch of paper, comprising a base frame 1, a base frame 2, a base frame 3, a cross-cutting mechanism and a longitudinal cutting mechanism, wherein the base frame 1 and the base frame 2 are arranged at upper and lower positions to form a paper feed, the base frame 1 is provided with a linear displacement sliding structure along the length direction, the base frame 3 is movably assembled on the side of the base frame 1 opposite to the paper feed, the base frame 3 is provided with an auxiliary frame formed with an external convex structure, the cross-cutting mechanism has a cross-cutting fixed blade arranged on the base frame 2, a cross-cutting movable blade arranged on the base frame 1, the cross-cutting fixed blade and the cross-cutting movable blade form a staggered blade match at the paper feed, and the longitudinal cutting mechanism has a longitudinal cutting fixed blade and a longitudinal cutting movable blade arranged on the auxiliary frame, and the blade of the longitudinal cutting fixed blade corresponds to the staggered blade match position of the blades of the cross-cutting fixed blade and the cross-cutting movable blade. The invention greatly improves the operating efficiency, the quality of the cut product is high, and the economic benefits are remarkable.

Description

Technical Field

[0001] The invention relates to paper cutting equipment, in particular to a paper cutting device capable of cutting notches on paper, and is particularly suitable for cutting binding edges of stacked images. Background Art

[0002] Folding is a technical measure to form archive specifications by fanning and folding large-format drawings. At present, the folding operation is completed automatically by a folding machine, which is economical, efficient and high-quality compared to manual folding.

[0003] The folded drawings formed by stacking need to be bound before archiving, which requires that a binding margin be reserved when stacking and that the excess margin be cut off according to the specifications of the horizontal folding, thereby forming an L-shaped cutting notch on the binding margin of the fan-shaped folded drawings. At present, the cutting of the binding margin of stacked drawings is realized by manual cutting. The whole stacking and binding process is shown in Figure 1 As shown, it needs to go through the following six main processes:

[0004] Step a: fold the large-format drawings into fan-shaped layers using a stacking machine, and reserve a binding margin;

[0005] Step b, folding the fan-shaped drawing sheet into layers horizontally along its length direction by means of a drawing folding machine;

[0006] Step c, obtaining the folded drawing that meets the archiving specifications;

[0007] Step d, manually unfolding the folding drawing obtained in step c along the horizontal folding direction;

[0008] Step e: retaining the binding edge of the horizontal folded layer where the label surface is located, and manually cutting and removing the binding edges of the other horizontal folded layers;

[0009] Step f, manually folding the folding drawing obtained in step e along the transverse folding direction, and binding the finished product by binding edge.

[0010] Obviously, manual cutting of the binding edges of stacked images requires the appointment of workers, and manual work is inefficient and the quality of the finished products is difficult to be consistent. Summary of the invention

[0011] The technical purpose of the present invention is to provide a paper cutting device with high working efficiency, high quality of cut products and good economy in view of the particularity of notch cutting of paper and the shortcomings of the prior art.

[0012] The technical purpose of the present invention is achieved by the following technical solution: a paper cutting device for cutting a notch on paper, the paper cutting device comprising:

[0013] - Base frame 1 and base frame 2, the base frame 1 and the base frame 2 are arranged at upper and lower positions and form a paper feed port, and the base frame 1 is provided with a sliding structure that enables the base frame 3 to perform linear displacement along the length direction of the base frame 1 and the base frame 2;

[0014] - a third base frame, the third base frame being movably mounted on a side of the first base frame opposite to the paper inlet, and the third base frame having an auxiliary frame formed with an external convex structure;

[0015] - a cross-cutting mechanism, the cross-cutting mechanism comprising a cross-cutting fixed blade arranged on the second base frame and a cross-cutting movable blade arranged on the first base frame, the cross-cutting fixed blade is a flat blade structure, the cross-cutting movable blade is a round blade structure, the cross-cutting fixed blade and the cross-cutting movable blade form a staggered blade fit at the paper inlet;

[0016] - Longitudinal cutting mechanism, the longitudinal cutting mechanism has a longitudinal cutting fixed blade and a longitudinal cutting movable blade arranged on the auxiliary frame, the longitudinal cutting fixed blade and the longitudinal cutting movable blade are respectively flat blade structures, the hinged ends of the longitudinal cutting fixed blade and the longitudinal cutting movable blade are far away from the transverse cutting mechanism, and the open ends are close to the transverse cutting mechanism, and the blades of the longitudinal cutting fixed blade correspond to the staggered matching positions of the blades of the transverse cutting fixed blade and the transverse cutting movable blade. This technical measure forms a paper feed through a base frame arranged in three places, and arranges a transverse cutting mechanism and a longitudinal cutting mechanism at the paper feed, so that the paper coming in from the paper feed can be cut horizontally and vertically, and a cutting notch is formed on the cut paper - especially an L-shaped cutting notch, which is particularly suitable for cutting the binding edge of the stacked pictures. Compared with manual cutting, it has high work efficiency, high quality of the cut product, and is economical and practical.

[0017] As one of the preferred solutions, the paper cutting device also includes an automatic control system, which is mainly composed of an initial position detection sensor, a paper feed detection sensor, a paper edge detection sensor, an in-situ detection sensor, a lateral displacement motor, a longitudinal cutting motor and a controller;

[0018] The initial position detection sensor is arranged on the base frame 1, and is used to feed back the detected reset state of the base frame 3 on the base frame 1 to the controller;

[0019] The paper feed detection sensor is arranged at the paper feed port and is used to feed back the detected paper feed starting position of the current paper feed to the controller;

[0020] The paper edge detection sensor is arranged on the base frame 3 and is used to feed back the detected cutting start position of the current paper feed to the controller;

[0021] The in-situ detection sensor is arranged on the base frame 3, and is used to feed back to the controller the reset state of the longitudinal cutting movable blade of the longitudinal cutting mechanism in the open state.

[0022] The lateral displacement motor is used to drive the base frame 3 to perform a linear sliding displacement for lateral cutting / resetting along the length direction of the base frame 1 and the base frame 2 under the control instruction of the controller; the lateral displacement motor is a servo motor.

[0023] The longitudinal cutting motor is used to drive the longitudinal cutting movable blade to the hinged / opened state of the longitudinal cutting fixed blade under the control instruction of the controller; the longitudinal cutting motor is a servo motor. This technical measure can realize the automatic cutting operation, thereby greatly reducing the labor intensity of workers and even eliminating workers, further significantly improving the work efficiency, and making the quality of the finished products consistent, which is economical and practical.

[0024] As one of the preferred schemes, the sliding structure provided on the base frame one is mainly composed of a linear guide rail and a transverse cutting motor. The linear guide rail is formed along the length direction of the base frame one. The linear slide block connected to the base frame three is movably mounted on the linear guide rail. The transverse cutting motor is used to drive the base frame three to perform linear sliding displacement on the base frame one. Furthermore, the sliding structure provided on the base frame one also has a driving wheel, a synchronous belt and a driven wheel. The driving wheel and the driven wheel are arranged at intervals corresponding to the linear guide rail along the length direction of the base frame one. The synchronous belt is sleeved between the driving wheel and the driven wheel and connected to the base frame three. The driving wheel is connected to the output shaft of the transverse cutting motor. This technical measure is convenient for molding on the one hand, and can make the base frame three run smoothly and with high precision on the base frame one on the other hand to ensure the cutting accuracy.

[0025] As one of the preferred schemes, the cross-cutting mechanism is mainly composed of a cross-cutting fixed blade, a cross-cutting movable blade and a cross-cutting movable blade holder. The cross-cutting fixed blade is arranged along the length direction of the base frame two, and the blade extends out of the upper edge of the base frame two. The cross-cutting movable blade is movably assembled on the rear side of the cross-cutting movable blade holder in a circumferentially rotatable manner through the connecting shaft assembly two. The blade rotation trajectory of the cross-cutting movable blade extends downward and interlaced with the blade of the cross-cutting fixed blade. The middle part of the cross-cutting movable blade holder is hinged on the base frame three through the connecting shaft assembly one, and the front side of the cross-cutting movable blade holder The upper part is connected to the rear relative structure through a preload spring, and the cross-cutting movable blade is closely matched with the cross-cutting fixed blade under the pulling of the preload spring; this technical measure uses the circumferential rotation of the cross-cutting movable blade, the linear displacement of the base frame three, and the friction between the cross-cutting movable blade and the cross-cutting fixed blade, so that the cross-cutting movable blade rolls and cuts the paper coming in from the paper inlet along the cross-cutting fixed blade, which not only effectively avoids the influence of the cross-cutting mechanism on the paper feeding of the paper inlet, but also effectively reduces the technical difficulty of the cross-cutting mechanism, and can reliably guarantee the accuracy of the cross-cutting mechanism in cutting paper. Furthermore, the blade of the cross-cutting movable blade is closely matched with the blade of the cross-cutting fixed blade at an angle of ≤5° and >0°; this technical measure uses the rolling friction of the cross-cutting movable blade on the cross-cutting fixed blade to achieve self-sharpening of the blade, so as to ensure that the blade of the cross-cutting mechanism always remains sharp, greatly extending the service life of the cross-cutting mechanism.

[0026] As one of the preferred schemes, the longitudinal cutting mechanism is mainly composed of a longitudinal cutting fixed blade, a longitudinal cutting movable blade and a longitudinal cutting motor. The longitudinal cutting fixed blade is fixedly connected to one side of the auxiliary frame, and the tip of the blade extends to the cross-cutting mechanism. The blade height of the longitudinal cutting fixed blade corresponds to the blade of the cross-cutting fixed blade. One end of the longitudinal cutting movable blade is hinged on the longitudinal cutting fixed blade, and the tip of the blade can extend to the cross-cutting mechanism. The longitudinal cutting motor is installed on the auxiliary frame above the longitudinal cutting movable blade. The output end of the longitudinal cutting motor is connected to an eccentric transmission wheel, and the eccentric transmission wheel is hinged to the longitudinal cutting movable blade through a connecting rod hinged at an eccentric position. During the rotation of the eccentric transmission wheel, the longitudinal cutting movable blade and the longitudinal cutting fixed blade are hinged / opened. This technical measure utilizes the eccentric drive of the eccentric transmission wheel to enable the longitudinal cutting fixed blade and the longitudinal cutting movable blade of the longitudinal cutting mechanism to achieve stable scissor-like cutting in the up and down directions, thereby cooperating with the transverse cutting mechanism to achieve longitudinal cutting at the tail end of the transverse cut of the paper, so as to ensure that the transverse cut and the longitudinal cut are accurately connected, and realize reliable forming of paper notch cutting.

[0027] As one of the preferred solutions, the paper cutting device is installed in the stacking machine, and is used to perform binding edge cutting on the folded drawings in the stacking machine. Furthermore, the paper cutting device is installed between the fan-shaped folding mechanism and the horizontal folding mechanism in the stacking machine, and performs binding edge cutting on the fan-shaped folded drawings folded by the fan-shaped folding mechanism. This technical measure enables the stacking machine to integrate fan-shaped folding, binding edge cutting and horizontal stacking, that is, after large-format paper enters the stacking machine, fan-shaped folding, binding edge cutting and horizontal stacking are automatically realized, and the folded drawings to be bound are directly obtained, which greatly improves the efficiency of stacking operations, does not require binding edge cutting workers, and the quality of the cut products is high, with significant economic benefits.

[0028] The beneficial technical effects of the present invention are as follows: the above technical measures can achieve horizontal and vertical cutting of the paper entering the paper inlet, and form a cutting notch on the cut paper - especially an L-shaped cutting notch, which is particularly suitable for cutting the binding edge of the stacked pictures; the above technical measures are combined with the stacking machine, so that the stacking machine can integrate fan-shaped folding, binding edge cutting and horizontal stacking, that is, after the large-format paper enters the stacking machine, fan-shaped folding, binding edge cutting and horizontal stacking are automatically achieved, and the folded drawings to be bound are directly obtained, which greatly improves the stacking operation efficiency, does not require a binding edge cutting worker, and the quality of the cut finished products is high, with significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a schematic diagram of the stacking and binding process of an existing stacking machine.

[0030] Figure 2 A structural schematic diagram of the present invention.

[0031] Figure 3 for Figure 2 Right view of .

[0032] Figure 4 for Figure 3 An enlarged view of the matching structure between the cross-cutting movable blade and the cross-cutting fixed blade.

[0033] Figure 5 for Figure 3 Schematic diagram of the cross-cutting movable tool holder structure and the matching structure between it and the cross-cutting movable blade.

[0034] Figure 6 The figure is a principle block diagram of the present invention when it is applied in a stacking machine.

[0035] Figure 7 for Figure 6 The figure shows a schematic diagram of the stacking and binding process of the stacking machine.

[0036] Meaning of the codes in the figure: 1—base frame one; 11—linear guide rail; 12—initial position detection sensor; 13—lateral displacement motor; 14—driving wheel; 15—synchronous belt; 16—driven wheel; 2—base frame two; 3—paper inlet; 31—paper feed detection sensor; 4—cross-cutting mechanism; 41—cross-cutting fixed blade; 42—cross-cutting movable blade; 43—cross-cutting movable knife holder; 44—preload spring; 45—connecting shaft assembly one; 46—connecting shaft assembly two; 5—base frame three; 51—linear slider; 52—auxiliary frame; 53—paper edge detection sensor; 6—longitudinal cutting mechanism; 61—longitudinal cutting fixed blade; 62—longitudinal cutting movable blade; 63—connecting rod; 64—eccentric transmission wheel; 65—longitudinal cutting motor; 66—in-situ detection sensor; α—angle. DETAILED DESCRIPTION

[0037] The present invention relates to a paper cutting device, specifically a paper cutting device capable of cutting a notch on a paper. The main technical content of the present invention is described in detail with multiple embodiments. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The technical solution of the present invention is explained clearly and in detail; although other embodiments are not separately drawn with drawings, their main structures can still refer to the drawings of embodiment 1.

[0038] It should be particularly noted that the drawings of the present invention are schematic, and unnecessary details have been simplified to clarify the technical purpose of the present invention so as to avoid blurring the technical solution that the present invention contributes to the prior art.

[0039] Example 1

[0040] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the paper cutting device of the present invention comprises a base frame 1, a base frame 2, a base frame 3 5, a cross-cutting mechanism 4, a longitudinal cutting mechanism 6 and an automatic control system.

[0041] Specifically, the base frame 1 and the base frame 2 are respectively long strip structures, and the lengths are basically corresponding. The base frame 1 is on the top and in the front, and the base frame 2 is on the bottom and in the back. The front and back offset arrangement structures are used to form a paper feed 3 at the upper and lower positions. At the paper feed 3, there is an upper folding edge of the upper edge of the base frame 2 that is turned forward and extended, and there is a lower folding edge of the lower edge of the base frame 1 that is turned backward and extended. The paper feed 3 formed between the base frame 1 and the base frame 2 is provided with an upper guide plate connected to the base frame 1 and a lower guide plate connected to the base frame 2, and a paper feed 3 with a large opening on the front side and a small opening on the back side is formed between the upper and lower guide plates. The front and back offset between the base frame 1 and the base frame 2 forms an installation space for the cross-cutting movable blade 42 of the cross-cutting mechanism 4.

[0042] On the base frame 1, there is a sliding structure that can make the base frame 3 5 move linearly along its length direction. The sliding structure is mainly composed of a linear guide 11, a driving wheel 14, a synchronous belt 15, a driven wheel 16 and a transverse cutting motor 13. Among them, the linear guide 11 is formed on the rear surface of the base frame 1 along the length direction of the base frame 1, and is located above the paper feed port 3. The driving wheel 14 and the driven wheel 16 correspond to the linear guide 11, and are arranged at both ends of the length direction of the base frame 1 at intervals along the length direction of the base frame 1; the driving wheel 14 is connected to the output shaft of the transverse cutting motor 13. The synchronous belt 15 is sleeved between the driving wheel 14 and the driven wheel 16. The transverse cutting motor 13 is connected to the front surface of the base frame 1, and the transverse cutting motor 13 is a servo motor.

[0043] The length of the base frame 3 5 is much smaller than that of the base frame 1, and the base height of the base frame 3 5 is smaller than that of the base frame 1. A linear slider 51 is provided on the front side surface of the base frame 3 5, and the base frame 3 5 is movably assembled on the linear guide rail 11 through the linear slider 51, and can slide linearly along the linear guide rail 11, that is, the base frame 3 5 is movably assembled on the side surface of the base frame 1 opposite to the paper inlet 3. The front side surface of the base frame 3 5 is fixedly connected with the above-mentioned synchronous belt 15, and the base frame 3 5 is driven to slide on the linear guide rail 11 during the displacement process of the synchronous belt 15, that is, the transverse cutting motor 13 is used to drive the base frame 3 5 to slide linearly on the base frame 1.

[0044] The rear side surface of the base frame three 5 has an auxiliary frame 52 that protrudes backward and extends downward. The height from the bottom edge of the auxiliary frame 52 extending downward to the top edge of the base of the base frame three 5 is greater than the height of the base frame one 1.

[0045] The cross-cutting mechanism 4 is mainly composed of a cross-cutting fixed blade 41, a cross-cutting movable blade 42 and a cross-cutting movable blade holder 43. Among them, the cross-cutting fixed blade 41 is a flat blade structure, which is arranged and formed along the length direction of the base frame 2, and the blade extends out of the upper edge of the base frame 2, is located at the rear edge of the slot of the paper inlet 3, and is basically flush with or slightly lower than the rear edge of the lower guide plate.

[0046] The cross-cutting movable knife holder 43 is basically U-shaped in top view, with the edge banding being the rear side and the opening being the front side. The cross-cutting movable knife holder 43 is hinged on the base frame 3 5 through a connecting shaft assembly 1 45 composed of a shaft rod, a bearing, etc., corresponding to the middle part in the length direction, and is located obliquely above the cross-cutting fixed blade 41 and also above the paper feed port 3; the cross-cutting movable knife holder 43 can swing forward and backward through the connecting shaft assembly 1 45. The upper front part of the cross-cutting movable knife holder 43 is connected to the rear relative structure (such as the auxiliary frame 52) through a preload spring 44, and the preload spring 44 pulls the upper front part of the cross-cutting movable knife holder 43 backward, so that the lower rear part of the cross-cutting movable knife holder 43 has the potential to swing forward; the aforementioned preload spring 44 is preferably two, respectively connected to the tops of both sides of the front opening area of ​​the cross-cutting movable knife holder 43.

[0047] The cross-cutting movable blade 42 is a circular blade structure, which can be a regular circular structure or a polygonal structure. The cross-cutting movable blade 42 is movably assembled at the rear center of the cross-cutting movable blade holder 43 in a circumferentially rotatable manner through a connecting shaft assembly 2 46 composed of a shaft rod, a bearing, etc.; the rotation trajectory of the cross-cutting movable blade 42 at the lower edge of the cross-cutting movable blade holder 43 should ensure that the rotation trajectory of the blade of the cross-cutting movable blade 42 extends downward. Under the pulling of the preload spring 44 on the cross-cutting movable blade holder 43, the cross-cutting movable blade 42 is arranged at the rear side of the cross-cutting fixed blade 41 and is closely matched with the cross-cutting fixed blade 41 at the paper feed port 3. The close match means that the blade of the cross-cutting movable blade 42 forms a close interlaced match with the blade of the cross-cutting fixed blade 41, that is, the blade of the cross-cutting movable blade 42 and the blade of the cross-cutting fixed blade 41 are interlaced at the paper feed port 3.

[0048] The blade of the movable cross-cutting blade 42 and the blade of the fixed cross-cutting blade 41 are staggered and preferably formed with an angle α structure, and the maximum value of the angle α is ≤5°, such as 1°, 3° or 5°. Of course, in addition to the angle structure, it can also be a surface contact fit (i.e., the angle is basically 0°), which is obviously not conducive to the self-sharpening of the blade.

[0049] The longitudinal cutting mechanism 6 is mainly composed of a longitudinal cutting fixed blade 61, a longitudinal cutting movable blade 62 and a longitudinal cutting motor 65. The longitudinal cutting fixed blade 61 is a flat blade structure, which is fixedly connected to one side of the auxiliary frame 52 and corresponds to the transverse cutting mechanism 4. The tip (i.e., the front end) of the longitudinal cutting fixed blade 61 extends toward the transverse cutting mechanism 4, and the blade height of the longitudinal cutting fixed blade 61 corresponds to the blade of the transverse cutting fixed blade 41.

[0050] The longitudinal cutting movable blade 62 is also a flat blade structure. The thickness of the longitudinal cutting movable blade 62 is hinged at the rear end of the longitudinal cutting fixed blade 61 through a connecting shaft assembly composed of a shaft rod, a bearing, etc. The longitudinal cutting movable blade 62 can rotate around the connecting shaft assembly on the longitudinal cutting fixed blade 61. The length of the longitudinal cutting movable blade 62 corresponds to the length of the longitudinal cutting fixed blade 61, that is, the tip of the longitudinal cutting movable blade 62 can extend to the cross-cutting mechanism 4.

[0051] The longitudinal cutting motor 65 is installed on the other side of the auxiliary frame 52, above the longitudinal cutting movable blade 62; the output shaft of the longitudinal cutting motor 65 extends to the longitudinal cutting movable blade 62 side. An eccentric transmission wheel 64 is connected to the output shaft on the longitudinal cutting movable blade 62 side, and a connecting rod 63 is connected to the eccentric position of the eccentric transmission wheel 64 through a connecting shaft assembly composed of a shaft rod, a bearing, etc., that is, the upper end of the connecting rod 63 is hinged to the eccentric position of the eccentric transmission wheel 64; the lower end of the connecting rod 63 is hinged to the middle front area of ​​the longitudinal cutting movable blade 62 through a connecting shaft assembly composed of a shaft rod, a bearing, etc. In this way, under the drive of the longitudinal cutting motor 65, the eccentric transmission wheel 64 rotates circumferentially, and in the process, the connecting rod 63 is driven to move eccentrically in the circumferential direction, so that the longitudinal cutting movable blade 62 running downward is hinged with the longitudinal cutting fixed blade 61, and the longitudinal cutting movable blade 62 running upward is opened with the longitudinal cutting fixed blade 61. The aforementioned longitudinal cutting motor may also be replaced by a suitable power device such as an electromagnet or a cylinder.

[0052] The knife tip of the longitudinal cutting mechanism 6 corresponds to the cross-cutting mechanism 4 and a knife clearance (about 1 mm) is maintained between the longitudinal cutting mechanism 6 and the cross-cutting mechanism 4 so that the cross-cutting mechanism 4 and the longitudinal cutting mechanism 6 do not interfere with each other.

[0053] The automatic control system is mainly composed of an initial position detection sensor 12, a paper feed detection sensor 31, a paper edge detection sensor 53, an in-situ detection sensor 66, a lateral displacement motor 13, a longitudinal cutting motor 65 and a controller.

[0054] Among them, the initial position detection sensor 12 is arranged at one end of the base frame 1, leaving the paper inlet 3 to ensure that the base frame 3 5 at this position does not affect the paper feeding at the paper inlet 3. The initial position detection sensor 12 is used to detect whether the base frame 3 5 is reset on the side of the base frame 1, and feed back the detected signal to the controller. The controller controls the paper feeding and conveying state at the paper inlet 3 according to the reset signal detected by the initial position detection sensor 12, including conveying the current paper to exit the cutting position, and the subsequent paper to enter the cutting position, etc.

[0055] The paper feed detection sensor 31 is arranged at the paper feed port 3, and is used to detect the paper feed start position of the current paper feed at the paper feed port 3, and feed back the detected signal to the controller. The controller obtains the current paper feed depth according to the obtained current paper feed start position, the set paper feed speed and paper feed time (usually the paper feed transmission motor is realized by a servo motor with higher control accuracy), and controls the paper feed conveying state at the paper feed port 3, including continuous paper feed when the cutting size is not reached, and pause paper feed when the cutting size is reached.

[0056] The paper edge detection sensor 53 is arranged on the auxiliary frame 52 of the base frame 3 5, and is basically consistent with the cutting edge of the transverse cutting mechanism 4. The paper edge detection sensor 53 is used to detect the transverse cutting edge of the paper entering from the paper inlet 3, which is the starting position of the transverse cutting, and feeds back the detected signal to the controller. The controller obtains the transverse cutting length of the current paper based on the obtained current paper edge starting position, paper cutting speed (such as the pulse of the transverse displacement motor 13, etc.) and paper cutting time. When the real-time transverse cutting length of the current paper reaches the preset transverse cutting length, the transverse cutting stops.

[0057] The in-situ detection sensor 66 is arranged on the auxiliary frame 52 of the base frame 3 5, and is located above the rear side of the longitudinal cutting movable blade 62. When the longitudinal cutting mechanism 6 is in the open state, the longitudinal cutting movable blade 62 corresponds to the in-situ detection sensor 66. The in-situ detection sensor 66 is used to detect the open and reset state of the longitudinal cutting mechanism 6 and feed back the detection signal to the controller.

[0058] According to the currently obtained paper feeding depth and the paper feeding depth of the preset specification, the controller controls the lateral displacement motor 13 to output the power capable of driving the base frame 3 5 to move in the transverse cutting direction, that is, driving the base frame 3 5 to perform transverse cutting displacement along the length direction of the base frame 1 1 and the base frame 2 2, and cutting the paper coming from the paper inlet 3. Of course, during the transverse cutting process, the paper inlet 3 usually stops conveying and remains stationary. During the transverse cutting process, the paper edge detection sensor 53 detects the edge of the transversely cut paper.

[0059] According to the currently obtained transverse cutting length and the transverse cutting length of the preset specification, the controller controls the longitudinal cutting motor 65 to output the power that can drive the eccentric driving wheel 64 to rotate circumferentially, that is, to drive the longitudinal cutting movable blade 62 to hinge and open the longitudinal cutting fixed blade 61. During the process, the in-situ detection sensor 65 detects the reset state of the longitudinal cutting movable blade 62, and the controller controls the longitudinal cutting motor 65 to stop according to the detection signal, and controls the transverse cutting motor 13 to output the power that can drive the base frame 3 5 to reset.

[0060] See also Figure 6As shown, the above-mentioned paper cutting device (i.e., the cutting mechanism) is installed in the stacking machine, and is specifically arranged between the fan-shaped folding mechanism and the transverse folding mechanism in the stacking machine. The fan-shaped folding mechanism and the cutting mechanism are connected by a stacking conveying mechanism, and the cutting mechanism and the transverse folding mechanism are connected by a stacking conveying mechanism, so as to perform a binding edge cutting process on the fan-shaped folded drawings folded by the fan-shaped folding mechanism. After the binding edge is cut, it is transported to the transverse folding mechanism for transverse folding, that is, it is used in the stacking machine to perform a binding edge cutting process on the folded drawings in the stacking machine, thereby realizing a full-process automated stacking and binding edge cutting process.

[0061] See also Figure 7 As shown, the stacking machine with the above-mentioned paper cutting device needs to go through the following four main processes in the entire stacking and binding process:

[0062] Process I: fold the large-format drawings into fan-shaped layers using a stacking machine, and reserve a binding margin;

[0063] Step II: cutting the binding edge of the fan-folded drawings by a drawing folding machine;

[0064] Step III, folding the fan-shaped folded drawing sheet with formed binding edges obtained in step II in a transverse layered manner along its length direction;

[0065] Process IV, obtains the folded drawings that meet the archiving specifications and binds the finished products by binding the edges.

[0066] It is obvious from the above process that the manual processes of unfolding, cutting, and closing the horizontally folded drawings are eliminated, and the finished products are directly fan-folded, bound edge cut, horizontally folded, and bound, which greatly improves the work efficiency.

[0067] Example 2

[0068] The other contents of this embodiment are the same as those of the first embodiment, except that: the paper cutting device is separated from the stacking machine, and the binding edge cutting is performed on the drawings that have been fan-shaped or transversely folded by the stacking machine, that is, the binding edge cutting process is still performed on the drawings that have been fan-shaped or transversely folded (need to be unfolded), and after cutting, they are transversely folded or closed (already transversely folded before cutting).

[0069] Example 3

[0070] The other contents of this embodiment are the same as those of Embodiment 2, except that the automatic control system is removed and manual control is performed.

[0071] The above embodiments are only used to illustrate the present invention, but not to limit it.

[0072] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the above embodiments or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. A paper cutting device for cutting a notch on paper, characterized in that: The paper cutting device comprises: - base frame one (1) and base frame two (2), the base frame one (1) and the base frame two (2) are arranged at upper and lower positions to form a paper feed port (3), and the base frame one (1) is provided with a sliding structure capable of enabling the base frame three (5) to perform linear displacement along the length direction of the base frame one (1) and the base frame two (2); - a third base frame (5), the third base frame (5) being movably mounted on a side of the first base frame (1) opposite to the paper inlet (3), the third base frame (5) having an auxiliary frame (52) formed in an external convex structure; - a cross-cutting mechanism (4), the cross-cutting mechanism (4) comprising a cross-cutting fixed blade (41) arranged on the second base frame (2), and a cross-cutting movable blade (42) arranged on the third base frame (5), the cross-cutting fixed blade (41) being a flat blade structure, the cross-cutting movable blade (42) being a round blade structure, the cross-cutting fixed blade (41) and the cross-cutting movable blade (42) forming a staggered blade fit at the paper inlet (3); - a longitudinal cutting mechanism (6), the longitudinal cutting mechanism (6) comprising a longitudinal cutting fixed blade (61) and a longitudinal cutting movable blade (62) arranged on an auxiliary frame (52), the longitudinal cutting fixed blade (61) and the longitudinal cutting movable blade (62) respectively being flat blade structures, the hinged ends of the longitudinal cutting fixed blade (61) and the longitudinal cutting movable blade (62) being away from the cross-cutting mechanism, and the open ends being close to the cross-cutting mechanism, and the blade of the longitudinal cutting fixed blade (61) corresponding to the staggered matching position of the blades of the cross-cutting fixed blade (41) and the cross-cutting movable blade (42).

2. The paper cutting device for cutting a notch on paper according to claim 1, characterized in that: The paper cutting device also includes an automatic control system, which is mainly composed of an initial position detection sensor (12), a paper feed detection sensor (31), a paper edge detection sensor (53), an in-situ detection sensor (66), a transverse cutting motor (13), a longitudinal cutting motor (65), and a controller; The initial position detection sensor (12) is arranged on the base frame one (1) and is used to feed back the detected reset state of the base frame three (5) on the base frame one (1) to the controller; The paper feed detection sensor (31) is arranged at the paper feed port (3) and is used to feed back the detected paper feed start position of the current paper feed to the controller; The paper edge detection sensor (53) is arranged on the base frame three (5) and is used to feed back the detected cutting start position of the current paper feed to the controller; The in-situ detection sensor (66) is arranged on the base frame three (5) and is used to feed back to the controller the reset state of the longitudinal cutting movable blade (62) of the longitudinal cutting mechanism (6) in the open state detected; The transverse cutting motor (13) is used to drive the base frame three (5) to perform a linear sliding displacement for transverse cutting / resetting along the length direction of the base frame one (1) and the base frame two (2) under the control command of the controller; The longitudinal cutting motor (65) is used to drive the longitudinal cutting movable blade (62) to a hinged / opened state toward one side of the longitudinal cutting fixed blade (61) under the control instruction of the controller.

3. The paper cutting device for cutting a notch on paper according to claim 1, characterized in that: The sliding structure arranged on the base frame one (1) is mainly composed of a linear guide rail (11) and a transverse cutting motor (13). The linear guide rail (11) is formed along the length direction of the base frame one (1). A linear slider (51) connected to the base frame three (5) is movably mounted on the linear guide rail (11). The transverse cutting motor (13) is used to drive the base frame three (5) to perform linear sliding displacement on the base frame one (1).

4. The paper cutting device for cutting a notch on paper according to claim 3, characterized in that: The sliding structure provided on the base frame one (1) further comprises a driving wheel (14), a synchronous belt (15) and a driven wheel (16); the driving wheel (14) and the driven wheel (16) are arranged at intervals along the length direction of the base frame one (1) corresponding to the linear guide rail (11); the synchronous belt (15) is sleeved between the driving wheel (14) and the driven wheel (16) and connected to the base frame three (5); the driving wheel (14) is connected to the output shaft of the transverse cutting motor (13).

5. The paper cutting device for cutting a notch on paper according to claim 1, characterized in that: The cross-cutting mechanism (4) mainly consists of a cross-cutting fixed blade (41), a cross-cutting movable blade (42) and a cross-cutting movable blade holder (43). The cross-cutting fixed blade (41) is arranged along the length direction of the base frame (2), and the blade extends out of the upper edge of the base frame (2). The cross-cutting movable blade (42) is movably assembled on the rear side of the cross-cutting movable blade holder (43) in a circumferentially rotatable manner through the connecting shaft assembly (46). The blade rotation trajectory of the cross-cutting movable blade (42) extends downward and interlocks with the blade of the cross-cutting fixed blade (41). The middle part of the cross-cutting movable blade holder (43) is hinged on the base frame (5) through the connecting shaft assembly (45). The upper front part of the cross-cutting movable blade holder (43) is connected to the rear relative structure through a preload spring (44). Under the pulling of the preload spring (44), the cross-cutting movable blade (42) and the cross-cutting fixed blade (41) are closely matched.

6. The paper cutting device for cutting a notch on paper according to claim 5, characterized in that: The blade edge of the cross-cutting movable blade (42) is closely matched with the blade edge of the cross-cutting fixed blade (41) at an angle (α) of ≤5° and >0°.

7. The paper cutting device for cutting a notch on paper according to claim 1, characterized in that: The longitudinal cutting mechanism (6) is mainly composed of a longitudinal cutting fixed blade (61), a longitudinal cutting movable blade (62) and a longitudinal cutting motor (65); the longitudinal cutting fixed blade (61) is fixedly connected to one side of the auxiliary frame (52), and the tip of the blade extends to the cross-cutting mechanism (4); the blade height of the longitudinal cutting fixed blade (61) corresponds to the blade height of the cross-cutting fixed blade (41); one end of the longitudinal cutting movable blade (62) is hinged on the longitudinal cutting fixed blade (61), and the tip of the blade can extend to the cross-cutting mechanism (4); At the mechanism (4), the longitudinal cutting motor (65) is mounted on the auxiliary frame (52) above the longitudinal cutting movable blade (62), the output end of the longitudinal cutting motor (65) is connected to an eccentric transmission wheel (64), the eccentric transmission wheel (64) is hinged to the longitudinal cutting movable blade (62) through a connecting rod (63) hinged at an eccentric position, and during the rotation of the eccentric transmission wheel (64), the longitudinal cutting movable blade (62) and the longitudinal cutting fixed blade (61) are hinged / opened.

8. The paper cutting device for cutting a notch on paper according to any one of claims 1 to 7, characterized in that: The paper cutting device is installed in the stacking machine and is used for cutting the binding edges of the folded drawings in the stacking machine.

9. The paper cutting device for cutting a notch on paper according to claim 8, characterized in that: The paper cutting device is installed between the fan-shaped folding mechanism and the horizontal folding mechanism in the drawing folding machine, and performs binding edge cutting on the fan-shaped folded drawings folded by the fan-shaped folding mechanism.

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