Die cutting device of printing machine

Abstract

The utility model discloses a die cutting device of a printing machine, which relates to the technical field of printing machines, and comprises an adjusting plate and a base, the front part and the rear part of the adjusting plate are provided with sliding chutes, the inner side surfaces of the sliding chutes are connected with sliding blocks in a sliding manner, the lower surfaces of the sliding blocks are fixedly connected with cutters, and the upper surfaces of the sliding blocks are fixedly connected with pull rods; and movable nails are fixedly connected to the four corners of the upper face of the adjusting plate, connecting plates are slidably connected to the outer side faces of the upper portions of the movable nails, and the outer side faces of the movable nails are sleeved with elastic pieces. By arranging the pull rod, the sliding block can be driven to move by pulling the pull rod, then the cutter is adjusted, the whole equipment does not need to be adjusted, the operation is more convenient and faster, by arranging the elastic piece and the elastic telescopic rod, the downward impact force of the cutter can be absorbed, and rigid collision between the cutter and the lower pressing plate is reduced; the service life of the cutter is prolonged, the die cutting efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically to a die-cutting device for a printing press. Background Technology

[0002] In the printing industry, die-cutting equipment is a core component in the production of labels and packaging. Its function is to precisely cut printing materials with blades to form finished products that meet design requirements. As the consumer market demands more refined and diversified printed materials, die-cutting equipment needs to frequently adapt to materials such as paper and film of different thicknesses and materials, as well as the die-cutting requirements of complex patterns. This poses a greater challenge to the durability and reliability of the blades.

[0003] When using die-cutting equipment, there will be some deviation when cutting printed materials. Because the blade is fixed, the entire equipment needs to be adjusted, which is very troublesome. Moreover, when cutting printed materials, the blade is prone to chipping or breaking when it reciprocates and impacts the die holder, resulting in a very high wear rate. Frequent blade replacement leads to long downtime and high maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a die-cutting device for a printing press, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes an adjustment plate and a base, the front and rear parts of the adjustment plate are provided with sliding grooves, a slider is slidably connected to the inner side of the sliding groove, a cutter is fixedly connected to the bottom of the slider, and a pull rod is fixedly connected to the top of the slider.

[0008] The four corners of the upper part of the adjusting plate are fixedly connected with movable nails. The upper outer side of the movable nail is slidably connected with a connecting plate. An elastic element is sleeved on the outer side of the movable nail. The upper end of the elastic element is fixedly connected to the connecting plate, and the lower end of the elastic element is fixedly connected to the adjusting plate.

[0009] Optionally, a support frame is fixedly connected to the front and rear sides of the upper middle of the base, and a reciprocating mechanism is installed in the middle of the top surface of the support frame. The lower output rod of the reciprocating mechanism is fixedly connected to the connecting plate.

[0010] Optionally, motors are installed on the left and right sides of the front side of the seat. The output shaft of the motor in the rear direction is connected to a rotating shaft through a coupling. A rolling roller is connected to the middle outer side of the rotating shaft through a key, and a drive gear is connected to the rear outer side of the rotating shaft through a key.

[0011] Optionally, a driven gear is rotatably connected to the upper part of the outer side of the driving gear, and the inner side of the driven gear is connected to the rotating shaft via a key. The front and rear parts of the outer side of the upper rotating shaft are connected to a bracket via bearings. The lower part of the bracket is fixedly connected to the base, and the front and rear parts of the outer side of the lower rotating shaft are connected to the base via bearings.

[0012] Optionally, a fixing block is fixedly connected to the left and right sides of the adjusting plate, and a threaded nail is threadedly connected to the inner side of the fixing block. The lower side of the upper nail head of the threaded nail abuts against the pull rod, and the lower side and the front and rear sides of the pull rod slide on the adjusting plate.

[0013] Optionally, a lower pressure plate is slidably connected to the inner side of the base below the adjustment plate, and elastic telescopic rods are fixedly connected to the four lower corners of the lower pressure plate. The lower part of the elastic telescopic rods is fixedly connected to the base.

[0014] This utility model provides a die-cutting device for a printing machine, which has the following beneficial effects:

[0015] 1. The die-cutting device of this printing machine is equipped with a pull rod. By pulling the pull rod, the slider can be moved, thereby adjusting the cutter. This eliminates the need to adjust the entire machine, making it more convenient and faster.

[0016] 2. The die-cutting device of this printing machine, by setting up elastic elements and elastic telescopic rods, can absorb the downward impact force of the blade, reduce the rigid collision between the blade and the lower pressure plate, increase the service life of the blade, increase the die-cutting efficiency, and reduce maintenance costs. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the right-side cross-section of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the rolling roller of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the slide groove of this utility model.

[0022] In the diagram: 1. Support frame; 2. Connecting plate; 3. Movable pin; 4. Elastic element; 5. Driven gear; 6. Driven gear; 7. Cutting tool; 8. Tie rod; 9. Fixing block; 10. Base; 11. Motor; 12. Bracket; 13. Rolling roller; 14. Threaded pin; 15. Reciprocating mechanism; 16. Adjusting plate; 17. Lower pressure plate; 18. Slide groove; 19. Rotating shaft; 20. Sliding block; 21. Elastic telescopic rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example

[0025] Please see Figures 1 to 3 and Figure 5 The present invention provides a die-cutting device for a printing machine, comprising an adjusting plate 16 and a base 10. The front and rear parts of the adjusting plate 16 are provided with sliding grooves 18. A slider 20 is slidably connected to the inner side of the sliding groove 18. A cutter 7 is fixedly connected to the bottom of the slider 20, and a pull rod 8 is fixedly connected to the top of the slider 20.

[0026] Movable pins 3 are fixedly connected to the four corners of the upper part of the adjusting plate 16. A connecting plate 2 is slidably connected to the upper outer side of the movable pins 3. An elastic element 4 is sleeved on the outer side of the movable pins 3. The upper end of the elastic element 4 is fixedly connected to the connecting plate 2, and the lower end of the elastic element 4 is fixedly connected to the adjusting plate 16.

[0027] Specifically, elastic element 4 is a cylindrical helical compression spring with a wire diameter of Φ3mm, an outer diameter of Φ20mm, 10 effective coils, a free length of 80mm, an elastic coefficient of k=15N / mm, and is made of 65Mn spring steel. When the tool 7 impacts downwards, the maximum compression of elastic element 4 is 20mm, and it can absorb energy E=½×k×Δx. 2 =30J.

[0028] Please refer to Figure 1 to Figure 3 A support frame 1 is fixedly connected to the front and rear sides of the upper middle of the base 10. A reciprocating mechanism 15 is installed in the middle of the top surface of the support frame 1. The lower output rod of the reciprocating mechanism 15 is fixedly connected to the connecting plate 2.

[0029] Please refer to Figure 1 to Figure 2 and Figure 4 The base 10 has motors 11 installed on the left and right sides of the front side. The output shaft of the motor 11 in the rear direction is connected to a rotating shaft 19 through a coupling. The middle outer side of the rotating shaft 19 is connected to a rolling roller 13 through a key. The rear outer side of the rotating shaft 19 is connected to a drive gear 6 through a key.

[0030] Specifically, the motor 11 is a three-phase asynchronous motor 11, the shaft 19 is a stepped shaft structure, the material is 40Cr, heat treated, hardness HB220-250, and it is interference-fitted with the rolling roller 13.

[0031] Please refer to Figure 1 to Figure 2 and Figure 4 The upper outer surface of the driving gear 6 is rotatably connected to the driven gear 5. The inner surface of the driven gear 5 is connected to the rotating shaft 19 via a key. The front and rear parts of the outer surface of the upper rotating shaft 19 are connected to the bracket 12 via bearings. The lower part of the bracket 12 is fixedly connected to the base 10. The front and rear parts of the outer surface of the lower rotating shaft 19 are connected to the base 10 via bearings.

[0032] Please refer to Figure 1 to Figure 2 and Figure 5 The left and right sides of the adjusting plate 16 are fixedly connected to the fixing blocks 9. The inner side of the fixing blocks 9 is threadedly connected to the threaded nails 14. The lower side of the upper nail head of the threaded nail 14 abuts against the pull rod 8. The lower side and the front and rear sides of the pull rod 8 slide on the adjusting plate 16.

[0033] Specifically, each fixing block 9 is equipped with one M6 internal hexagonal threaded nail 14, with the bottom surface of the nail head machined into a flat surface, which abuts against the anti-slip teeth on the top surface of the pull rod 8 with a tooth pitch of 1mm and a tooth depth of 0.5mm.

[0034] Please refer to Figure 5. A lower pressure plate 17 is slidably connected to the inner side of the base 10 below the adjustment plate 16. Elastic telescopic rods 21 are fixedly connected to the four lower corners of the lower pressure plate 17. The lower part of the elastic telescopic rods 21 is fixedly connected to the base 10.

[0035] Specifically, the elastic telescopic rod 21 consists of an outer tube of Φ30mm aluminum alloy, an inner rod of Φ20mm steel, and a built-in return spring. The spring wire diameter is Φ4mm, the outer diameter is Φ18mm, the free length is 100mm, the elastic coefficient k=25N / mm, the maximum stroke is 30mm, and the damper provides a damping force of 5N・s / m. With double buffering, spring + damping, the impact acceleration of the lower pressure plate 17 is reduced to less than twice the acceleration due to gravity.

[0036] In use, first adjust the cutter 7 according to the printed material to be cut, rotate the threaded pin 14 to loosen the threaded connection between the threaded pin 14 and the fixing block 9, so that the threaded pin 14 and the fixing block 9 no longer fix the pull rod 8. Then pull the pull rod 8, which in turn drives the slider 20 to slide on the inner side of the slide groove 18, so that the slider 20 drives the cutter 7 to move. After moving the cutter 7 to the corresponding position according to the printed material to be cut, rotate the threaded pin 14 again to tighten the threaded connection between the threaded pin 14 and the fixing block 9, so that the threaded pin 14 and the fixing block 9 fix the pull rod 8 again, thus completing the fixation of the cutter 7. Start the motor 11 to drive the lower rotating shaft 19 to rotate, the lower rotating shaft 19 drives the lower rolling roller 13 to rotate, which in turn drives the drive gear 6 to rotate. Wheel 6 meshes with driven gear 5, which in turn drives driven gear 5 to rotate. Driven gear 5 then drives the upper rotating shaft 19 to rotate, which in turn drives the upper rolling roller 13 to rotate. The rolling roller 13 then moves the printed material. When it moves below the cutter 7, the reciprocating mechanism 15 drives the connecting plate 2 to move downward. This, in turn, drives the adjusting plate 16 to move downward through the movable pin 3 and the elastic element 4. This then drives the cutter 7 to move downward, cutting the printed material. The impact force of the cutter 7 moving downward is transmitted to the elastic telescopic rod 21 through the pressure plate 17. The elastic telescopic rod 21 absorbs the impact force. At the same time, when the cutter 7 cuts the printed material, it transmits the impact force upward through the adjusting plate 16, which in turn compresses the elastic element 4. The elastic element 4 absorbs this impact force.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A die-cutting device for a printing machine, comprising an adjusting plate (16) and a base (10), characterized in that: The front and rear parts of the adjusting plate (16) are provided with sliding grooves (18), and the inner side of the sliding groove (18) is slidably connected to a slider (20). A cutter (7) is fixedly connected to the bottom of the slider (20), and a pull rod (8) is fixedly connected to the top of the slider (20). The four corners of the upper part of the adjusting plate (16) are fixedly connected with movable nails (3), and the upper outer side of the movable nails (3) is slidably connected with a connecting plate (2). The outer side of the movable nails (3) is sleeved with an elastic element (4). The upper end of the elastic element (4) is fixedly connected to the connecting plate (2), and the lower end of the elastic element (4) is fixedly connected to the adjusting plate (16).

2. The die-cutting device for a printing machine according to claim 1, characterized in that: The base (10) has a support frame (1) fixedly connected to the front and back sides in the middle of the top. A reciprocating mechanism (15) is installed in the middle of the top surface of the support frame (1). The lower output rod of the reciprocating mechanism (15) is fixedly connected to the connecting plate (2).

3. The die-cutting device for a printing machine according to claim 1, characterized in that: Motors (11) are installed on the left and right sides of the front side of the seat (10). The output shaft of the motor (11) in the rear direction is connected to a rotating shaft (19) through a coupling. The middle outer side of the rotating shaft (19) is connected to a rolling roller (13) through a key. The rear outer side of the rotating shaft (19) is connected to a drive gear (6) through a key.

4. The die-cutting device for a printing machine according to claim 3, characterized in that: The upper outer surface of the driving gear (6) is rotatably connected to the driven gear (5). The inner side of the driven gear (5) is connected to the rotating shaft (19) by a key. The front and rear parts of the outer side of the upper rotating shaft (19) are connected to the bracket (12) by bearings. The lower part of the bracket (12) is fixedly connected to the base (10). The front and rear parts of the outer side of the lower rotating shaft (19) are connected to the base (10) by bearings.

5. The die-cutting device for a printing machine according to claim 1, characterized in that: The left and right sides of the adjusting plate (16) are fixedly connected to the fixing blocks (9), and the inner side of the fixing blocks (9) is threadedly connected to the threaded nails (14). The lower side of the upper nail head of the threaded nails (14) abuts against the pull rod (8), and the lower side and the front and rear sides of the pull rod (8) slide on the adjusting plate (16).

6. The die-cutting device for a printing machine according to claim 1, characterized in that: The inner side of the base (10) is slidably connected to a lower pressure plate (17) below the adjustment plate (16). The lower four corners of the lower pressure plate (17) are fixedly connected to elastic telescopic rods (21), and the lower part of the elastic telescopic rods (21) is fixedly connected to the base (10).

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