A printing die cutting machine die cutting gap adjusting mechanism

Abstract

The utility model discloses a printing die -cutting machine die -cutting gap adjusting mechanism, including motor and a pair of hand -operated sliding platform, a pair of hand -operated sliding platform between rotatory mounting has a pair of die -cutting roller, the central position of one hand -operated sliding platform rotatory mounting has the drive shaft, and the bottom of drive shaft is fixedly connected with the output of motor, and one end of die -cutting roller is connected with drive shaft through transmission assembly, and two transmission assemblies are oppositely arranged. The utility model discloses a transmission assembly is arranged at one end of die -cutting roller, and the bevel gear of L -shaped plate bearing in transmission assembly is flexibly matched with drive shaft and die -cutting roller respectively, and the motor need not stop, and die -cutting roller continues reverse rotation, avoids the production interruption caused by the adjustment of shutdown, improves the efficiency greatly, can prevent the die -cutting quality after restart process parameter fluctuation influence, reduces the loss of equipment to frequent start -stop, adapts the continuous production demand of many thickness materials.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a die-cutting gap adjustment mechanism for a printing die-cutting machine. Background Technology

[0002] In industries such as printing and packaging, and paper processing, printing die-cutting machines are the core equipment for die-cutting materials, and the accuracy of their die-cutting gap directly determines the quality of the die-cut products.

[0003] Currently, most die-cutting gap adjustment mechanisms on the market adopt a stop-and-adjustment mode. This means that when adjusting the gap, the motor power must be cut off and the die-cutting roller rotation must be stopped. Operators then manually loosen the fastening parts, push the die-cutting roller to move, and then re-lock it. This not only consumes a long downtime but also interrupts the continuous production process. Especially in scenarios involving multiple batches and material thickness changes, frequent downtime leads to a significant decrease in production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a die-cutting gap adjustment mechanism for a printing die-cutting machine, so as to solve the problem that the constant die-cutting gap adjustment mechanism mentioned in the background art requires machine stoppage for adjustment, which affects efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a die-cutting gap adjustment mechanism for a printing die-cutting machine, comprising a motor and a pair of hand-cranked slides, a pair of die-cutting rollers rotatably mounted between the pair of hand-cranked slides, a drive shaft rotatably mounted at the center of one of the hand-cranked slides, the bottom of the drive shaft being fixedly connected to the output end of the motor, one end of the die-cutting roller being connected to the drive shaft through a transmission assembly, the two transmission assemblies being arranged opposite to each other; the transmission assembly is used to drive the die-cutting roller to perform axial displacement to adjust the die-cutting gap, and the axis of the die-cutting roller is perpendicular to the axis of the drive shaft.

[0006] Preferably, a pair of sliders are slidably mounted on the hand-cranked slide table without the transmission assembly installed, and the end of the die-cutting roller is rotatably connected to the sliders.

[0007] Preferably, a bidirectional screw is rotatably mounted in the hand-cranked slide, and a handwheel is fixedly mounted on the top of the bidirectional screw.

[0008] Preferably, the transmission assembly is an L-shaped plate slidably mounted on the hand-cranked slide table. The top and side walls of the L-shaped plate are rotatably mounted with bevel gears via bearings. The bevel gear in the vertical direction is keyed to the drive shaft, and the bevel gear in the horizontal direction is fixedly connected to the die-cutting roller.

[0009] Preferably, the sidewall of the L-shaped plate is integrally formed with a boss for accommodating the bearing, and a pressure ring is fixedly installed at the end of the boss. The pressure ring is provided with a circular hole for the die-cutting roller to pass through.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention features a transmission assembly at one end of the die-cutting roller. The bevel gears carried by the L-shaped plate in the transmission assembly are flexibly engaged with the drive shaft and the die-cutting roller via bearings. When adjusting the gap, the vertical bevel gears can slide along the keyway of the drive shaft and maintain transmission, while the horizontal bevel gears remain engaged as the die-cutting rollers move. The motor does not need to be stopped, and the die-cutting rollers continue to rotate in the opposite direction. This avoids production interruptions caused by machine stoppages for adjustments, significantly improves efficiency, prevents fluctuations in process parameters after restarting from affecting die-cutting quality, reduces wear and tear on equipment from frequent start-stop cycles, and is suitable for continuous production of materials of various thicknesses. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the transmission component of this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the transmission component of this utility model.

[0015] Figure 4 This is a cross-sectional three-dimensional structural diagram of the L-shaped plate of this utility model.

[0016] In the diagram: 1. Motor; 2. Hand-cranked slide; 3. Drive shaft; 4. Handwheel; 5. L-shaped plate; 6. Die-cutting roller; 7. Slider; 8. Bevel gear; 9. Boss; 10. Pressure ring; 11. Bearing. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4This utility model provides a technical solution: a die-cutting gap adjustment mechanism for a printing die-cutting machine, including a motor 1 and a pair of hand-cranked slides 2. A bidirectional screw is rotatably mounted in the hand-cranked slides 2, and a handwheel 4 is fixedly mounted on the top of the bidirectional screw. The hand-cranked slides 2 are existing technology, and their core structure is that the handwheel 4 drives the bidirectional screw to rotate, in conjunction with parallel guide rods. The guide rods can restrict the slides from rotating with the screw. A pair of die-cutting rollers 6 are rotatably mounted between the pair of hand-cranked slides 2. A drive shaft 3 is rotatably mounted at the center of one of the hand-cranked slides 2. The bottom of the drive shaft 3 is fixedly connected to the output end of the motor 1. One end of the die-cutting roller 6 is connected to the drive shaft 3 through a transmission assembly. The two transmission assemblies are arranged opposite each other. The advantage of this arrangement is that when the power of the drive shaft 3 is transmitted to the pair of die-cutting rollers 6, the two rollers rotate in opposite directions. The transmission assembly is used to drive the die-cutting rollers 6 to make axial displacement to adjust the die-cutting gap, and the axis of the die-cutting roller 6 is perpendicular to the axis of the drive shaft 3.

[0019] A pair of sliders 7 are slidably mounted on the hand-cranked slide table 2 without the transmission components installed. The end of the die-cutting roller 6 is rotatably connected to the sliders 7, and the sliders 7 can also support the rotation of the end of the die-cutting roller 6, ensuring the coaxiality and stability of the die-cutting roller when it rotates at high speed, and avoiding the impact of roller sway on the die-cutting accuracy.

[0020] The transmission assembly is an L-shaped plate 5 that is slidably mounted on a hand-cranked slide table 2. The top and side walls of the L-shaped plate 5 are rotatably mounted with bevel gears 8 via bearings 11. The side walls of the L-shaped plate 5 are integrally formed with bosses 9 for accommodating bearings 11. A pressure ring 10 is fixedly mounted at the end of the boss 9. The pressure ring 10 has a round hole for the die-cutting roller 6 to pass through. The bevel gear 8 in the vertical direction is keyed to the drive shaft 3, and the bevel gear 8 in the horizontal direction is fixedly connected to the die-cutting roller 6.

[0021] After motor 1 starts, its output drives drive shaft 3 to rotate around its own axis. Vertical bevel gear 8 (installed in bearing 11 at the top of L-shaped plate 5), keyed to drive shaft 3, rotates synchronously with drive shaft 3. Through meshing transmission, it transmits the vertical rotational power to horizontal bevel gear 8 within bearing 11 on the side wall of L-shaped plate 5. Horizontal bevel gear 8 is fixedly connected to die-cutting roller 6, further transmitting power to the die-cutting roller 6, thus providing it with rotational driving force. Because the two transmission components are arranged oppositely, the meshing directions of the two pairs of bevel gears are opposite, ultimately driving a pair of die-cutting rollers 6 to rotate in opposite directions, providing a foundation for subsequent material feeding and die-cutting.

[0022] When it is necessary to adjust the gap between the two die-cutting rollers 6 according to the material thickness, the operator turns the handwheel 4 on the hand-cranked slide table 2. The handwheel 4 drives the internal bidirectional screw to rotate, which in turn drives the L-shaped plate 5 and the slider 7 installed on the hand-cranked slide table 2 to move synchronously, so as to achieve precise adjustment of the gap between the pair of die-cutting rollers 6 and meet the die-cutting requirements of materials of different thicknesses.

[0023] This application provides a transmission assembly at one end of the die-cutting roller 6. The bevel gear 8 carried by the L-shaped plate 5 in the transmission assembly is flexibly engaged with the drive shaft 3 and the die-cutting roller 6 through the bearing 11. When adjusting the gap, the vertical bevel gear 8 can slide along the keyway of the drive shaft 3 and maintain transmission, while the horizontal bevel gear 8 remains engaged as the die-cutting roller 6 moves. The motor 1 does not need to be stopped and the die-cutting roller 6 continues to rotate in the opposite direction. This avoids production interruptions caused by machine stoppage for adjustment, greatly improves efficiency, and prevents fluctuations in process parameters after restarting from affecting the die-cutting quality. It also reduces the wear and tear on the equipment caused by frequent start-stop cycles and is suitable for continuous production of materials of various thicknesses.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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.

[0025] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die-cutting gap adjustment mechanism for a printing die-cutting machine, characterized in that: The device includes a motor (1) and a pair of hand-cranked slides (2). A pair of die-cutting rollers (6) are rotatably mounted between the pair of hand-cranked slides (2). A drive shaft (3) is rotatably mounted at the center of one of the hand-cranked slides (2). The bottom of the drive shaft (3) is fixedly connected to the output end of the motor (1). One end of the die-cutting roller (6) is connected to the drive shaft (3) through a transmission assembly. The two transmission assemblies are arranged opposite to each other. The transmission assembly is used to drive the die-cutting roller (6) to make axial displacement to adjust the die-cutting gap. The axis of the die-cutting roller (6) is perpendicular to the axis of the drive shaft (3).

2. The die gap adjustment mechanism of a printing die cutter according to claim 1, wherein: A pair of sliders (7) are slidably mounted on the hand-cranked slide (2) without the transmission assembly installed, and the end of the die-cutting roller (6) is rotatably connected to the sliders (7).

3. The die gap adjustment mechanism of claim 1, wherein: A bidirectional screw is rotatably mounted in the hand-cranked slide (2), and a handwheel (4) is fixedly mounted on the top of the bidirectional screw.

4. The die gap adjustment mechanism of claim 1, wherein: The transmission component is an L-shaped plate (5) that is slidably mounted on the hand-cranked slide (2). The top and side walls of the L-shaped plate (5) are rotatably mounted with bevel gears (8) through bearings (11). The bevel gears (8) in the vertical direction are keyed to the drive shaft (3), and the bevel gears (8) in the horizontal direction are fixedly connected to the die-cutting roller (6).

5. The die gap adjustment mechanism of a printing die cutter according to claim 4, wherein: The side wall of the L-shaped plate (5) is integrally formed with a boss (9) for accommodating the bearing (11). A pressure ring (10) is fixedly installed at the end of the boss (9). The pressure ring (10) is provided with a round hole for the die-cutting roller (6) to pass through.

Images