Cutting carriage and single cutting machine

Abstract

The utility model discloses a cutting trolley and single sheet cutting machine, including a pair of paper pressing rod in cutting machine inside, cutting machine inside is provided with the cutting mechanism corresponding with the position of paper pressing rod, and the cutting mechanism includes fixed tool and the offset tool of both sides thereof, the offset tool includes trolley frame, and the upper end of trolley frame is installed with drive motor, and the inside installation of trolley frame has with the synchronous belt pulley of drive motor position correspondence, and the output end of drive motor is connected with synchronous belt pulley through belt rotation, and the lower end fixed connection of synchronous belt pulley has linear pivot, linear pivot penetrates trolley frame, and the outer wall rotation of linear pivot is connected with rotatable tool rest, and through control two end offset tool trolley's tool rest opposite or reverse rotation a specific angle, makes the cutter tip of three trolleys form a new straight line, and the actual offset angle of this new straight line is consistent with paper, thereby has completed accurate compensation to paper skew before cutting.

Description

Technical Field

[0001] This utility model belongs to the field of cutting machine technology, specifically a cutting trolley and a single-sheet cutting machine. Background Technology

[0002] A paper cutting machine is an industrial or office piece of equipment based on mechanical transmission, hydraulic drive, or CNC system control, specifically designed for the precise dimensional cutting of various types of paper (including ordinary printing paper, coated paper, cardboard, Xuan paper, corrugated paper, etc.) and paper materials (such as cardboard, carton blanks, self-adhesive paper, etc.). Its core function is to use high-speed cutting blades (such as alloy steel blades), under the coordinated action of preset positioning references and pressure fixing mechanisms, to cut stacks or single sheets of paper into finished products of uniform specifications according to production, office, or processing needs. It is widely used in industries such as printing and packaging, publishing, advertising production, office printing, and carton production, and is a key piece of equipment for achieving dimensional standardization and improving production efficiency in the paper processing flow.

[0003] The cutting carriage inside the cutting machine is the core motion execution component, integrating cutting execution, precise drive, positioning guidance, and safety protection functions. It is the key mechanism for the cutting machine to achieve high-precision material cutting. Its core function is to carry the cutting tools (such as alloy steel blades, laser cutting heads, ultrasonic cutters, etc.) and, under the coordinated action of the drive system and the guiding mechanism, complete high-speed, stable reciprocating or continuous motion along a preset trajectory (straight line, curve, or custom path). It works in conjunction with the pressing mechanism to precisely cut materials such as paper, cardboard, film, and leather. It is widely used in automated cutting equipment such as CNC cutting machines, high-speed roll paper cutting machines, and roll slitting machines.

[0004] Patent CN220762831U discloses a paper cutting machine, which includes a frame and a worktable. The worktable is provided with a pressing component and a limiting component. The limiting component is used to limit the end of the paper, and the pressing component is used to fix the top of the paper. A top plate is slidably connected to the side of the worktable away from the limiting component. The top plate can slide back and forth in the direction of the limiting component.

[0005] When paper enters the cutting machine, it may become skewed. Direct cutting would render the paper unusable. Manually adjusting the paper angle introduces errors and can cause the paper to scatter, hindering subsequent cutting operations. To address these issues, we propose a cutting carriage and a single-sheet cutting machine. Utility Model Content

[0006] The purpose of this utility model is to provide a cutting trolley and a single-sheet cutting machine to solve the technical problem 333.

[0007] The objective of this utility model can be achieved through the following technical solutions: A cutting carriage and a single-sheet cutting machine include a pair of paper-pressing rods located inside the cutting machine. The cutting machine is provided with a cutting mechanism corresponding to the position of the paper-pressing rods. The cutting mechanism includes a fixed blade and offset blades on both sides. The offset tool includes a carriage frame, a drive motor is mounted on the upper end of the carriage frame, a synchronous pulley corresponding to the position of the drive motor is mounted inside the carriage frame, the output end of the drive motor is connected to the synchronous pulley via a belt, and a linear shaft is fixedly connected to the lower end of the synchronous pulley. A linear shaft passes through the trolley frame, and a rotatable tool holder is rotatably connected to the outer wall of the linear shaft. A mounting platform is set on the rotatable tool holder, and a voice coil motor is mounted on the mounting platform. A vertically moving tool holder is fixedly connected to the upper end of the voice coil motor. The linear shaft passes through and is fixedly connected to the vertically moving tool holder, and a cutting blade assembly is fixedly connected to the lower end of the vertically moving tool holder.

[0008] Furthermore, a guide shaft is installed at the upper end of the vertically moving tool holder, and a pair of rollers corresponding to the position of the guide shaft are installed on the rotatable tool holder. The rollers are located on both sides of the guide shaft and are in rolling connection with it.

[0009] Furthermore, a rotation sensor is installed on the side wall of the trolley frame, and a grating sensor is installed on the side wall of the vertically moving tool holder.

[0010] Furthermore, the vertically moving tool holder sidewall is connected to the rotatable tool holder by a spring.

[0011] Furthermore, the fixed tool includes a carriage mounting bracket, with a voice coil motor II installed on the bottom wall of the carriage mounting bracket. A tool bracket is fixedly connected to the upper end of the voice coil motor II, and a cutting tool assembly is also fixedly installed at the lower end of the tool bracket. A camera is installed at the lower end of the carriage mounting bracket.

[0012] Furthermore, a controller bracket is fixedly connected to the upper end of the trolley mounting bracket, and a trolley controller is installed on the upper end of the controller bracket.

[0013] The beneficial effects of this utility model are: 1. This utility model controls the tool holders of the offset tool carriages at both ends to rotate in opposite directions by a specific angle, so that the tips of the three carriages form a new straight line. This new straight line is consistent with the actual offset angle of the paper, thus completing the precise compensation for the paper skew before cutting. This method achieves a higher degree of freedom in position adjustment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the left side structure of the offset tool in this utility model; Figure 3 This is a schematic diagram of the right side structure of the offset tool in this utility model; Figure 4 This is a schematic diagram of the fixed tool structure in this utility model; Figure 5 This is a schematic diagram of the cutting mechanism in the correction state of this utility model; Figure 6 This is a schematic diagram of the angle of the cutter head deflection in this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Cutting machine; 11. Paper pressing rod; 2. Offset blade; 201. Cart frame; 202. Drive motor; 203. Synchronous pulley; 204. Rotatable blade holder; 205. Spring; 206. Vertical moving blade holder; 207. Voice coil motor one; 208. Roller; 209. Guide shaft; 210. Rotation sensor; 211. Grating sensor; 3. Fixed blade; 301. Cart mounting bracket; 302. Voice coil motor two; 303. Controller bracket; 304. Cart controller; 305. Camera; 4. Cutting blade assembly. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 - Figure 3 As shown, a cutting trolley and a single-sheet cutting machine include a pair of paper-pressing rods 11 located inside the cutting machine. The cutting machine is equipped with a cutting mechanism corresponding to the position of the paper-pressing rods 11. The cutting mechanism includes a fixed blade 3 and offset blades 2 on both sides. The offset tool 2 includes a carriage frame 201. A drive motor 202 is mounted on the upper end of the carriage frame 201. A synchronous pulley 203 corresponding to the position of the drive motor 202 is installed inside the carriage frame 201. The output end of the drive motor 202 is connected to the synchronous pulley 203 via a belt. A linear shaft is fixedly connected to the lower end of the synchronous pulley 203. A linear shaft passes through the trolley frame 201. A rotatable tool holder 204 is rotatably connected to the outer wall of the linear shaft. A mounting platform is provided on the rotatable tool holder 204. A voice coil motor 207 is mounted on the mounting platform. A vertically moving tool holder 206 is fixedly connected to the upper end of the voice coil motor 207. The linear shaft passes through and is fixedly connected to the vertically moving tool holder 206. A cutting blade assembly 4 is fixedly connected to the lower end of the vertically moving tool holder 206.

[0018] Specifically, when the paper cutting device detects a skew deviation in the paper (including linear offset, angular tilt, and other posture abnormalities), the system will automatically calculate the actual offset angle of the paper and the compensation correction parameters based on a preset geometric compensation model. The drive motor 202 controls the blade holders of the offset blades 2 at both ends to perform opposite or reversible rotation actions according to the direction of the deviation. The rotation angle is calibrated to a specific accuracy threshold (e.g., ±0.01°) through real-time closed-loop feedback. During this process, the three cutting carriages on the device will synchronously respond to the posture adjustment command, and their blade tips will be reconstructed in space to form a new cutting reference line. This line is precisely matched with the actual offset angle of the paper (i.e., the reference line is parallel to and aligned with the edge of the paper to be cut), thus completing precise compensation for the paper skew deviation throughout its entire stroke before the cutting action is executed. Compared to traditional fixed-base cutting methods, this technical solution breaks through the limitations of single-dimensional position correction through a multi-tool collaborative posture adjustment mechanism, achieving higher degrees of freedom (angle and position dual dimensions) dynamic calibration of paper posture, effectively improving the accuracy and response speed of skew compensation, and ensuring the edge flatness and dimensional consistency of the paper after cutting.

[0019] The voice coil motor 207 can provide fast and precise linear drive, and the drive motor 202 drives the tool holder to rotate at a precise angle according to system instructions.

[0020] As an additional design feature, a car controller is mounted on the upper part of the car frame 201.

[0021] Please see Figure 3 As shown, a guide shaft 209 is installed on the upper end of the vertically movable tool holder 206, and a pair of rollers 208 corresponding to the position of the guide shaft 209 are installed on the rotatable tool holder 204. The rollers 208 are located on both sides of the guide shaft 209 and are tactilely connected to it.

[0022] A rotation sensor 210 is installed on the side wall of the trolley frame 201, and a grating sensor 211 is installed on the side wall of the vertically moving tool holder 206. The grating sensor and the rotation sensor ensure the accuracy of displacement and angle. This mechanism design is responsive and has high control precision.

[0023] The side wall of the vertically movable tool holder 206 is connected to the rotatable tool holder 204 by a spring 205.

[0024] Please see Figure 4As shown, the fixed tool 3 includes a carriage mounting bracket 301. A voice coil motor 302 is provided on the inner bottom wall of the carriage mounting bracket 301. A tool bracket is fixedly connected to the upper end of the voice coil motor 302. A cutting tool assembly 4 is also fixedly installed at the lower end of the tool bracket. A camera 305 is installed at the lower end of the carriage mounting bracket 301.

[0025] The voice coil motor 202 can provide fast and precise linear drive, and when used with the grating sensor 211, it can achieve precise control of the tool head height.

[0026] Specifically, camera 305 is integrated onto fixed cutter 3, forming the system's "eyes." Upon power-on, the system controls three carriages to move synchronously, automatically acquiring the paper's precise size, placement, and cutting data by scanning the paper's edge positioning information and QR code content. Subsequently, the system calculates the paper's offset angle and direction (positive or negative deflection) and determines whether it falls within the range of automatic correction. This process achieves full automation from information acquisition and angle calculation to decision-making.

[0027] The upper end of the trolley mounting bracket 301 is fixedly connected to the controller bracket 303, and the trolley controller 304 is installed on the upper end of the controller bracket 303.

[0028] The system employs a modular design with three carriages, placing the core detection component—the camera—on the central fixed tool carriage. This optimizes function allocation and reduces system complexity and cost. The offset tool carriages on either side focus on performing the correction rotation, improving equipment utilization and overall work efficiency.

[0029] Working principle: 1. This solution places the camera on the fixed cutting carriage, thus reducing the problem of over-concentration of functions on both sides of the carriage. The camera's function is to read the size and placement of the loaded paper, as well as the content to be cut contained in the QR code, and the cutting width of each of the three carriages after power-on. When reading the above information begins, the lower carriage automatically moves closer according to the program, then moves synchronously to the left to read the QR code and position information on the left. Then the carriage pauses, the X-axis paper feeding system starts feeding paper, and reads the position information of the lower part of the paper on the left. Then the three carriages move synchronously to the right to read the position information of the lower part of the paper on the right. Then the carriage pauses again, the X-axis paper feeding system starts retracting paper, and reads the position information of the upper part of the paper on the right. Information reading ends.

[0030] 2. Please refer to Figures 5-6As shown, the system calculates the paper offset angle based on the read position information. If the angle is outside the allowable correction range, an alarm system will be activated, prompting manual repositioning of the paper and re-testing. If the angle is within the allowable correction range, the system continues to the next step, automatically determining whether it is a positive offset (facing the paper feed direction, left side lags behind, right side leads) or a negative offset (facing the paper feed direction, right side lags behind, left side leads). If it is a positive offset, the drive motors on both offset tool carriages will rotate clockwise by a certain angle, causing the blade tip position on both offset tool carriages to deviate from the theoretical position by a certain displacement. This displacement is related to the cutting position of each carriage read from the QR code. The angle generated by the width should be consistent with the previously measured deflection angle. If it is a negative deflection, the drive motors on both sides of the offset tool carriage will rotate counterclockwise by a certain angle, so that the position of the blade tip on both sides of the offset tool carriage deviates from the theoretical position by a certain displacement. This displacement and the angle generated by the cutting width of each carriage read from the QR code should be consistent with the previously measured deflection angle. After the calculation is completed, the carriage will automatically move to the cutting starting point position and rotate the correction drive motor by a specific angle according to the actual calculation result. Taking the blade tip of the offset tool carriage as the starting point, the distance between the fixed tool carriage and the offset tool carriage will be gradually increased by referring to the cutting width data information to complete the correction calculation and arrangement preparation work.

[0031] 3. The three groups of small cars work simultaneously in their respective designated areas until the entire page is cut.

[0032] 4. With the cooperation of the automatic paper feeding system, repeat the above process to achieve automatic task execution.

[0033] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A cutting carriage and a single-sheet cutting machine, characterized in that: Includes a pair of paper-pressing rods (11) located inside the cutting machine, and the cutting machine is provided with a cutting mechanism corresponding to the position of the paper-pressing rods (11), the cutting mechanism including a fixed blade (3) and offset blades (2) on both sides. The offset tool (2) includes a carriage frame (201), a drive motor (202) is mounted on the upper end of the carriage frame (201), a synchronous pulley (203) corresponding to the position of the drive motor (202) is installed inside the carriage frame (201), the output end of the drive motor (202) is rotatably connected to the synchronous pulley (203) via a belt, and a linear shaft is fixedly connected to the lower end of the synchronous pulley (203); The linear rotating shaft passes through the trolley frame (201), and a rotatable tool holder (204) is rotatably connected to the outer wall of the linear rotating shaft. A mounting platform is provided on the rotatable tool holder (204), and a voice coil motor (207) is mounted on the mounting platform. A vertical moving tool holder (206) is fixedly connected to the upper end of the voice coil motor (207). The linear rotating shaft passes through and is fixedly connected to the vertical moving tool holder (206). A cutting blade assembly (4) is fixedly connected to the lower end of the vertical moving tool holder (206).

2. The cutting carriage and single-sheet cutting machine according to claim 1, characterized in that: The vertically movable tool holder (206) is equipped with a guide shaft (209) at its upper end. The rotatable tool holder (204) is equipped with a pair of rollers (208) corresponding to the position of the guide shaft (209). The rollers (208) are located on both sides of the guide shaft (209) and are tactilely connected to it.

3. The cutting carriage and single-sheet cutting machine according to claim 1, characterized in that: A rotation sensor (210) is installed on the side wall of the trolley frame (201), and a grating sensor (211) is installed on the side wall of the vertical moving tool holder (206).

4. The cutting carriage and single-sheet cutting machine according to claim 1, characterized in that: The side wall of the vertically movable tool holder (206) is connected to the rotatable tool holder (204) by a spring (205).

5. The cutting carriage and single-sheet cutting machine according to claim 1, characterized in that: The fixed cutter (3) includes a trolley mounting frame (301), a voice coil motor (302) is provided on the inner bottom wall of the trolley mounting frame (301), a cutter bracket is fixedly connected to the upper end of the voice coil motor (302), a cutter assembly (4) is also fixedly installed at the lower end of the cutter bracket, and a camera (305) is installed at the lower end of the trolley mounting frame (301).

6. The cutting carriage and single-sheet cutting machine according to claim 5, characterized in that: The upper end of the trolley mounting bracket (301) is fixedly connected to the controller bracket (303), and the upper end of the controller bracket (303) is equipped with the trolley controller (304).

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