Die cutting device for label printing machine

Abstract

The utility model provides a die-cutting device for a label printing machine, and belongs to the technical field of label printing machines, the die-cutting device comprises a die-cutting mechanism which comprises a linear mechanism erected above a base, the movable end of the linear mechanism is vertically downward and is vertically connected with a pressing plate, and a blade is arranged on the pressing plate; the anti-sticking mechanism comprises a mounting base erected above the pressing plate, the movable end of the linear mechanism is arranged on the mounting base in a penetrating mode, and a vertically-downward blowing hole is formed in the lower portion of the mounting base and used for blowing air to the base when the linear mechanism drives the pressing plate to move upwards; and the conveying mechanism is arranged on the base and used for conveying labels. The die cutting device can effectively solve the problem of label adhesion.

Description

Technical Field

[0001] This application belongs to the field of label printing machine technology, and particularly relates to a die-cutting device for label printing machines. Background Technology

[0002] Label printing is usually done on paper with self-adhesive coating on the back. When using a label printing machine, a corresponding die-cutting device needs to be set up on the production line to cut the labels to ensure that the labels can be used quickly. However, when the blade is die-cutting the label printing, the self-adhesive may stick to the blade, which will damage the label and increase the defect rate of the label printing. Utility Model Content

[0003] To address the shortcomings of the prior art, this application provides a die-cutting device for a label printing machine, which can effectively solve the label adhesion problem.

[0004] To achieve the above objectives, the present invention employs the following technology:

[0005] A die-cutting device for a label printing machine, comprising:

[0006] The die-cutting mechanism includes a linear mechanism mounted on a base, the movable end of which faces vertically downward and is vertically connected to a pressure plate, and the pressure plate is provided with a blade.

[0007] The anti-sticking mechanism includes a mounting base mounted above the pressure plate, the movable end of the linear mechanism passing through the mounting base, and a vertically downward-facing air blowing hole below the mounting base for blowing air onto the base when the linear mechanism drives the pressure plate to move upward.

[0008] The conveying mechanism, located on the base, is used to convey labels.

[0009] Furthermore, the anti-sticking mechanism also includes an exhaust unit, which includes an air storage hole vertically downward on the mounting base. The diameter of the air storage hole is larger than the shaft diameter of the movable end of the linear mechanism. The movable end of the linear mechanism passes through the air storage hole and its bottom. A first air passage and a second air passage are formed inside the mounting base. One end of the first air passage is connected to the upper end of the air storage hole, and the other end is connected to the air blowing hole. One end of the second air passage is connected to the bottom end of the air storage hole, and the other end is connected to the outside of the mounting base. A piston adapted to the air storage hole and the second air passage is provided on the movable end of the linear mechanism. A sealing unit is also provided above the mounting base for sealing the opening of the air storage hole.

[0010] Furthermore, the sealing unit includes a mating plate horizontally positioned above the mounting base and adapted to the top surface of the mounting base. The mating plate has vertically positioned guide rods at both ends that pass through the top surface of the portal frame. A limiting platform is located at the end of each guide rod. A spring connecting the limiting platform and the top of the portal frame is fitted onto the guide rod. The movable end of a linear mechanism passes through the mating plate. A sealing plug adapted to the opening of the air storage hole is located at the bottom of the mating plate. A limiting ring is coaxially positioned on the movable end of the linear mechanism. When the spring is in its natural state, the limiting ring engages with the top of the mating plate. The mating plate is detachably connected to the top surface of the mounting base.

[0011] Furthermore, there are two air inlets, located on both sides of the air storage hole. The number of first air passages is the same as that of the air inlets, located on both sides of the air storage hole. The two first air passages are connected to the corresponding air inlets.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The air blowing hole effectively prevents the label from sticking to the blade during die cutting, thus effectively solving the problem of label damage caused by blade sticking and reducing the defect rate of printed labels.

[0014] 2. Under the action of the air storage hole, the first air channel, and the second air channel, and in conjunction with the piston, the linear mechanism, and the sealing unit, the extension and retraction of the movable end of the linear mechanism can be used to collect air and blow it onto the label through the air blowing hole, thereby achieving rapid separation of the blade and the label. This reduces the production cost of the die-cutting device and greatly improves the automation level of the die-cutting device, thereby increasing the production efficiency of label printing products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the device according to an embodiment of this application.

[0016] Figure 2 This is a cross-sectional view of the device according to an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the structure of the top of the mounting block in an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the structure of the lock block in an embodiment of this application.

[0019] Reference numerals: 1-Die-cutting mechanism, 11-Linear mechanism, 111-Piston, 12-Pressure plate, 13-Blade, 2-Base, 3-Anti-sticking mechanism, 31-Mounting seat, 311-First air passage, 312-Second air passage, 313-Lock hole, 32-Blowing hole, 321-Blowing pipe, 33-Air collection and exhaust unit, 331-Air storage hole, 34-Sealing unit, 341-Matching plate, 342-Guide rod, 343-Limiting platform, 344-Spring, 345-Sealing plug, 346-Motor, 347-Lock block, 4-Conveying mechanism, 41-Lower mold base, 5-Gantry frame. Detailed Implementation

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0021] This application provides a die-cutting device for a label printing machine, such as... Figure 1 and Figure 2 As shown, it includes: a die-cutting mechanism 1, a base 2, an anti-sticking mechanism 3, and a conveying mechanism 4.

[0022] The die-cutting mechanism 1 includes a linear mechanism 11 mounted on the base 2, with its movable end pointing vertically downward and connected to a pressure plate 12. In this embodiment, the linear mechanism 11 is a hydraulic cylinder, but other driving methods such as linear pneumatic cylinders or linear electric cylinders can also be used. The pressure plate 12 is provided with a blade 13 for die-cutting the printed labels on the base 2. Correspondingly, the base 2 below the pressure plate 12 is provided with a lower die seat 41 that is compatible with the blade 13. The anti-sticking mechanism 3 includes a mounting base 31 fixedly mounted on the pressure plate 12. The movable end of the linear mechanism 11 passes through the mounting base 31. The mounting base 31 is provided with a vertically downward-facing air blowing hole 32. When the movable end of the linear mechanism 11 drives the pressure plate 12 to move upward, the air blowing hole 32 can blow air perpendicularly to the base 2. The conveying mechanism 4 is mounted on the base 2 and is used to convey labels along the length of the base. In this embodiment, the conveying device 4 is a conveying roller, but other conveying methods such as conveying wheels or conveyor belts can also be used.

[0023] In application, the conveying mechanism 4 transports the labels to be die-cut on the base 4 along the length of the base 4, moving a portion of the label onto the lower die holder. The linear mechanism 11 drives the pressure plate 12 downward, and the label is die-cut through the cooperation of the blade 13 and the lower die holder 41. After die-cutting, the linear mechanism 11 moves upward, and the air blowing hole 32 continuously blows air onto the label on the lower die holder 41, thereby quickly and thoroughly separating the blade 13 from the die-cut label. The conveying mechanism 4 transports the die-cut portion out of the lower die holder 41 and sends the next portion of labels to be die-cut onto the lower die holder 41 for the next die-cutting. The air blowing hole 32 effectively prevents the label from sticking to the blade 13 during die-cutting, thus effectively solving the problem of label damage caused by blade sticking and effectively reducing the defect rate of printed labels.

[0024] Example 2

[0025] As a further implementation of the above embodiment 1, such as Figure 1 and Figure 2 As shown, the anti-sticking mechanism 3 also includes an air collection and exhaust unit 33, which includes an air storage hole 331 vertically downwardly opened on the mounting base 31. The diameter of the air storage hole 331 is larger than the shaft diameter of the movable end of the linear mechanism 11. The movable end of the linear mechanism 11 is disposed at the bottom of the air storage hole 331. A first air passage 311 and a second air passage 312 are formed inside the mounting base 31. One end of the first air passage 311 is connected to the upper end of the air storage hole 331, and the other end of the first air passage 311 is connected to the blowing hole 32. One end of the second air passage 312 is connected to the bottom end of the air storage hole 331, and the other end of the second air passage 312 is connected to the outside of the mounting base 31. A piston 111 adapted to the air storage hole 331 and the second air passage 312 is provided on the movable end of the linear mechanism 11. A sealing unit 34 is also provided above the mounting base 31 for sealing the opening of the air storage hole 331.

[0026] During application, the movable end of the linear mechanism 11 extends, causing the pressure plate 12 to move downwards and approach the lower die holder 41. Simultaneously, it causes the piston 111 to move downwards and enter the air storage hole 331, expelling air from the first air passage 311 and the second air passage 312, and drawing air from above the mounting base 31 into the air storage hole 331. When the blade 13 engages with the lower die holder 41, the piston 111 moves to the bottom of the air storage hole 331, blocking the second air passage 312. Simultaneously, the sealing unit 34 seals the opening of the air storage hole 331, completing the die cutting process. Afterwards, the movable end of the linear mechanism 11 retracts, during which the opening of the air storage hole 331 remains blocked. The linear mechanism 11 drives the pressure plate 12 to rise away from the lower die base 41, and at the same time drives the piston 111 to rise, blowing the air in the air storage hole 331 through the first air passage 311 and the air blowing hole 32 onto the label stuck to the blade 13, so that the label is quickly separated from the blade 13, avoiding damage to the label due to sticking to the blade. When the piston 111 moves to the upper end of the air storage hole 331, the sealing unit 34 opens the opening of the air storage hole 331, ready for the next die cutting. With the arrangement of the air storage hole 331, the first air passage 311, and the second air passage 312, and in cooperation with the piston 111, the linear mechanism 11, and the sealing unit 34, the extension and retraction of the movable end of the linear mechanism 11 can be used to collect air and blow it onto the label through the air blowing hole 32, thereby achieving rapid separation of the blade 13 from the label. This reduces the production cost of the die-cutting device and greatly improves the automation level of the die-cutting device, thereby increasing the production efficiency of label printing products.

[0027] Specifically, such as Figure 2 As shown, the axis of the movable end of the linear mechanism 11 is coaxially arranged with the axis of the air storage hole 331. There are two air blowing holes 32, located on both sides of the air storage hole 331. The number of first air channels 311 is the same as that of the air blowing holes 32, located on both sides of the air storage hole 331. The two first air channels 311 are respectively connected to the corresponding air blowing holes 32. An air blowing pipe 321 is coaxially connected to the air blowing hole 32. The air blowing pipe 321 is installed through the pressure plate 12, and its end is a predetermined distance from the base 2. Air is blown onto the label through the two air blowing holes 32 and the air blowing pipe 321 connected to them, so that the blade 13 can be separated from the label more quickly.

[0028] Specifically, such as Figures 2-4As shown, a gantry frame 5 is provided above the base 2, a linear mechanism 11 is located on the top of the gantry frame 5, and a mounting base 31 is located between the two sides of the gantry frame 5. The sealing unit 34 includes a mating plate 341 horizontally positioned above the mounting base 31 and adapted to the top surface of the mounting base 31. Both ends of the mating plate 341 are provided with vertically positioned guide rods 342 that pass through the top surface of the gantry frame 5. The ends of the guide rods 342 are provided with limiting platforms 343, and springs 344 connecting the limiting platforms 343 and the top of the gantry frame 5 are sleeved on the guide rods 342. The linear mechanism... The movable end of the linear mechanism 11 passes through the mating plate 341. The bottom of the mating plate 341 is provided with a sealing plug 345 that matches the opening of the air storage hole 331. A limiting ring 112 is coaxially provided on the movable end of the linear mechanism 11. When the spring 344 is in its natural state, the limiting ring 112 is fitted to the top of the mating plate 341. Motors 346 are provided at both ends of the mating plate 341. The driving end of the motor is vertically oriented and connected to a locking block 347. The top surface of the mounting base 31 is provided with a locking hole 313 that matches the locking block 347. The bottom of the locking hole 313 is provided with a cavity.

[0029] In application, the linear mechanism 11 extends, the piston 111 moves downward, and at the same time, the limiting ring 112 abuts against the mating plate 341 and moves downward, compressing the spring 344. When the piston 111 moves to the bottom of the air storage hole 331, the sealing plug 345 blocks the opening of the air storage hole 331, the locking block 347 enters the locking hole 313, and the motor 346 drives the locking block 347 to rotate a predetermined angle in the cavity at the bottom of the locking hole 313 to lock the mating plate 341 and the mounting base 31 together, thereby achieving continuous sealing of the air storage hole 331. When the piston 111 moves to the upper end of the air storage hole 331, the motor 346 drives the locking block 347 to rotate, and under the action of the spring 344, the locking block 347 is disengaged from the locking hole 313 to separate the mating plate 341 from the mounting base 31, thereby canceling the sealing of the air storage hole 331. By detaching the mating plate 341 from the mounting base 31, and with the cooperation of the guide rod 342 and the spring 344, the linear mechanism 11 can automatically seal the air storage hole 331 through extension and retraction, further improving the automation level of the die-cutting device.

[0030] The above description is only a preferred embodiment of this application and is not intended to limit this application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application.

Claims

1. A die-cutting device for a label printing machine, characterized in that, include: The die-cutting mechanism (1) includes a linear mechanism (11) mounted on a base (2), with its movable end facing vertically downward and vertically connected to a pressure plate (12), and a blade (13) provided on the pressure plate (12). The anti-sticking mechanism (3) includes a mounting base (31) mounted above the pressure plate (12), the movable end of the linear mechanism (11) passing through the mounting base (31), and a vertically downward-facing air blowing hole (32) provided below the mounting base (31) for blowing air onto the base (2) when the linear mechanism (11) drives the pressure plate (12) to move upward; the anti-sticking mechanism (3) also includes an air collection and exhaust unit (33), which includes an air storage hole (331) vertically downward-facing on the mounting base (31), the diameter of the air storage hole (331) being larger than the shaft diameter of the movable end of the linear mechanism (11), and the movable end of the linear mechanism (11) passing through the air storage hole (331). 31) and its bottom are provided; the mounting base (31) has a first air passage (311) and a second air passage (312) inside. One end of the first air passage (311) is connected to the upper end of the air storage hole (331), and the other end is connected to the air blowing hole (32). One end of the second air passage (312) is connected to the bottom end of the air storage hole (331), and the other end is connected to the outside of the mounting base (31); the movable end of the linear mechanism (11) is provided with a piston (111) that is adapted to the air storage hole (331) and the second air passage (312). A sealing unit (34) is also provided above the mounting base (31) for sealing the opening of the air storage hole (331); The conveying mechanism (4) is located on the base (2) and is used to convey the labels.

2. The die-cutting device for a label printing machine according to claim 1, characterized in that, A portal frame (5) is provided above the base (2), a linear mechanism (11) is provided on the top of the portal frame (5), and a mounting seat (31) is provided between the two sides of the portal frame (5).

3. The die-cutting device for a label printing machine according to claim 2, characterized in that, The sealing unit (34) includes a mating plate (341) horizontally positioned above the mounting base (31) and adapted to the top surface of the mounting base (31). The mating plate (341) has guide rods (342) vertically positioned at both ends and passing through the top surface of the gantry frame (5). The end of the guide rod (342) is provided with a limiting platform (343). A spring (344) is sleeved on the guide rod (342) and connected to the limiting platform (343) and the top of the gantry frame (5). The movable end of the linear mechanism (11) passes through the mating plate (341). The bottom of the mating plate (341) is provided with a sealing plug (345) adapted to the opening of the air storage hole (331). A limiting ring (112) is coaxially provided on the movable end of the linear mechanism (11). When the spring (344) is in its natural state, the limiting ring (112) is engaged with the top of the mating plate (341). The mating plate (341) is detachably connected to the top surface of the mounting base (31).

4. The die-cutting device for a label printing machine according to claim 1, characterized in that, The axis of the movable end of the linear mechanism (11) is coaxial with the axis of the air storage hole (331).

5. The die-cutting device for a label printing machine according to claim 4, characterized in that, There are two air holes (32), which are located on both sides of the air storage hole (331). The number of first air passages (311) is the same as that of the air holes (32), and they are located on both sides of the air storage hole (331). The two first air passages (311) are connected to the corresponding air holes (32).

6. The die-cutting device for a label printing machine according to claim 5, characterized in that, An air blowing pipe (321) is coaxially connected to the air blowing hole (32). The air blowing pipe (321) passes through the pressure plate (12) and its end is a predetermined distance from the base (2).

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