Circular knife small hole waste removing device

Abstract

The circular knife small hole waste removing device comprises a knife holder, an upper knife roll and a lower knife roll which are in transmission connection through a gear are installed in the knife holder, a circular knife die is arranged on the outer ring of the middle of the upper knife roll, two circles of upper ejector pins are arranged on the portions, on the two sides of the circular knife die, of the upper knife roll correspondingly, and a hollow cavity is formed in the lower knife roll; the surface of the lower knife roll is provided with two circles of waste discharge holes corresponding to the two circles of upper ejector pins and communicated with the hollow cavity, a roll core on the side, away from the driving motor, of the lower knife roll is provided with a through hole communicated with the hollow cavity, the roll core on the side, away from the driving motor, of the lower knife roll is connected with a waste suction pipe fitting through a rotating connector, and the waste suction pipe fitting is connected with a dust collector. According to the die cutting device, waste generated by die cutting of small holes in the previous procedure can be ejected into the hollow cavity of the lower knife roll through the cooperation of the upper ejector pin of the upper knife roll and the waste discharge hole of the lower knife roll, automatic waste suction is achieved under the action of the dust collector, it is avoided that a bottom supporting film is additionally arranged for waste removal, and the production cost of enterprises is reduced.

Description

Technical Field

[0001] This application relates to the technical field of die-cutting equipment, and particularly relates to a circular knife small-hole waste removing device. Background Art

[0002] A rotary die-cutting machine die-cuts a material tape fed by a paper feeding roller through the cooperation of an upper circular knife roller and a lower circular knife roller. In the prior art, there is a product that needs to perform side punching and small-hole die-cutting. A large amount of waste generated after the small-hole die-cutting needs to be removed by a bottom paper with weak adhesive tape. Since an additional layer of bottom paper is added, it will increase the production cost of the enterprise. Therefore, in order to solve the problem of not using the bottom paper and yet having to discharge waste, this application provides a circular knife small-hole waste removing device. Utility Model Content

[0003] To overcome the deficiencies of the prior art, this application discloses a circular knife small-hole waste removing device.

[0004] To achieve the above object, the technical solution adopted by this application is: a circular knife small-hole waste removing device, including a tool holder. An upper knife roller and a lower knife roller connected by gear transmission are installed inside the tool holder. A driving motor connected to the lower knife roller is arranged outside the tool holder. A circular knife die is arranged on the outer circle in the middle of the upper knife roller. Two circles of upper ejector pins are respectively arranged on both sides of the circular knife die on the upper knife roller. A hollow cavity is formed inside the lower knife roller. Two circles of waste discharge holes corresponding to the two circles of upper ejector pins are arranged on the surface of the lower knife roller and are communicated with the hollow cavity. A through hole communicated with the hollow cavity is opened on the roller core on the side of the lower knife roller away from the driving motor. The roller core on the side of the lower knife roller away from the driving motor is connected with a waste suction pipe fitting through a rotary joint, and the waste suction pipe fitting is connected with a vacuum cleaner.

[0005] Further preferably, the two circles of upper ejector pins are both welded and fixed on the upper knife roller.

[0006] Further preferably, a rounded corner structure is opened at the lower end of the upper ejector pin.

[0007] Further preferably, the rotary joint includes a shaft sleeve, a sealed bearing and a transition pipe fitting. The shaft sleeve is sleeved on the roller core on the side of the lower knife roller away from the driving motor. The sealed bearing is press-fitted and fixed inside the shaft sleeve. One end of the transition pipe fitting is inserted into the inner ring of the sealed bearing, and the other end of the transition pipe fitting is connected with the waste suction pipe fitting through a pipe fitting joint.

[0008] Further preferably, an anti-disengagement skirt is formed outward at one end of the transition pipe fitting inserted into the inner ring of the sealed bearing.

[0009] Further preferably, the waste suction pipe fitting is a spring telescopic pipe.

[0010] This application achieves the following beneficial effects:

[0011] This application can push the waste generated by die-cutting small holes in the previous process to the hollow cavity of the lower knife roller through the cooperation of the upper ejector pins of the upper knife roller and the waste discharge holes of the lower knife roller, and realize automatic waste suction under the action of a vacuum cleaner, thus avoiding the addition of waste removal for the bottom film and reducing the production cost of the enterprise.

[0012] As for other features and advantages of this application, they will be described in the subsequent specification, and will be partially obvious from the specification, or understood by implementing this application. The objectives and other advantages of this application can be achieved and obtained through the structures pointed out in the specification and the accompanying drawings. Brief Description of the Drawings

[0013] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the disclosure of this application, and are used together with the specification to explain the principles of this disclosure.

[0014] Figure 1 It is a schematic side structure diagram disclosed for this application;

[0015] Figure 2 It is a schematic partial structure diagram (without the knife holder) disclosed for this application;

[0016] In the figure: 10, knife holder; 20, upper knife roller; 21, upper ejector pin; 22, circular knife die; 30, lower knife roller; 31, waste discharge hole; 40, gear; 50, drive motor; 60, rotary joint; 61, bushing; 62, sealed bearing; 63, transition pipe fitting; 64, anti-disengagement skirt; 70, waste suction pipe fitting; 80, pipe fitting joint; 90, vacuum cleaner. Detailed Description of the Embodiments

[0017] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, rather than all the embodiments.

[0018] In the description of this application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0019] Embodiment

[0020] To solve the problem in the prior art that die-cutting small holes in a material tape requires adding a bottom film for waste removal, resulting in a relatively high production cost for enterprises, refer to Figure 1 and Figure 2As shown, the present application provides a circular knife small hole waste removal device, including a knife seat 10, an upper knife roller 20 and a lower knife roller 30 connected by a gear 40 are installed inside the knife seat 10, a driving motor 50 connected to the lower knife roller 30 is arranged on the outside of the knife seat 10, a circular knife die 22 is arranged on the middle outer ring of the upper knife roller 20, and two circles of upper ejector pins 21 are respectively arranged on both sides of the circular knife die 22 of the upper knife roller 20, a hollow cavity (not shown) is formed inside the lower knife roller 30, and two circles of waste discharge holes 31 are opened on the surface of the lower knife roller 30 corresponding to the two circles of upper ejector pins 21 and communicating with the hollow cavity, a through hole communicating with the hollow cavity is opened on the roller core of the lower knife roller 30 on the side away from the driving motor 50, and the roller core of the lower knife roller 30 on the side away from the driving motor 50 is connected to a waste suction pipe 70 through a rotating joint 60, and the waste suction pipe 70 is connected to a vacuum cleaner 90.

[0021] During the specific implementation, the material strip with small holes punched in the previous process is sent between the upper knife roller 20 and the lower knife roller 30, and the upper ejector pin 21 of the upper knife roller 20 will push the waste in the small holes through the waste discharge hole 31 into the hollow cavity. When the vacuum cleaner 90 sucks air, the waste in the hollow cavity will be quickly sucked away, and while the upper knife roller 20 and the lower knife roller 30 are moving, the upper knife die can also perform corresponding shape die-cutting on the material strip.

[0022] Specifically, the two circles of upper ejector pins 21 of the present application are both welded and fixed on the upper knife roller 20 .

[0023] In order to prevent the upper ejector pin 21 from damaging the material strip during the process of ejecting the waste material, the present application provides a rounded structure (not shown) at the lower end of the upper ejector pin 21 .

[0024] In this embodiment, the rotating joint 60 includes a sleeve 61, a sealed bearing 62 and a transition pipe 63. The sleeve 61 is sleeved on the roller core of the lower knife roller 30 away from the drive motor 50. The sealed bearing 62 is fixed inside the sleeve 61 with interference fit. One end of the transition pipe 63 is inserted into the inner ring of the sealed bearing 62, and the other end of the transition pipe 63 is connected to the waste suction pipe 70 through the pipe joint 80. When the lower knife roller 30 rotates, the transition pipe 63 of the present application will rotate in the sealed bearing 62. In this way, the waste suction pipe 70 will not be entangled and damaged, which has strong practicality.

[0025] In addition, the transition pipe 63 of the present application is inserted into one end of the inner ring of the sealing bearing 62 and is formed with an anti-detachment skirt 64 outwardly. In this way, the transition pipe 63 will not be detached from the sealing bearing 62 during rotation, and it plays a limiting function. There will be no adverse effects when used for a long time.

[0026] In this embodiment, the waste suction pipe fitting 70 is a spring telescopic pipe. This type of waste suction pipe fitting 70 has strong telescopic performance and can deform during the rotation of the lower cutter roller 30. Compared with a rigid waste suction pipe fitting 70, it has higher practical value.

[0027] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0028] The above embodiments are only for illustrating the technical concept and features of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it accordingly. It should not be used to limit the protection scope of the present application. Any equivalent transformation or modification made according to the spirit of the present application should be covered within the protection scope of the present application.

Claims

1. A circular knife small hole waste removal device, comprising a tool holder, wherein an upper knife roller and a lower knife roller which are connected by gear transmission are installed inside the tool holder, and a driving motor connected to the lower knife roller is arranged outside the tool holder, and is characterized in that, A circular knife die is arranged on the outer ring of the middle part of the upper knife roller. Two circles of upper ejector pins are respectively arranged on both sides of the upper knife roller at the circular knife die. A hollow cavity is formed inside the lower knife roller. Two circles of waste discharging holes communicating with the hollow cavity are formed on the surface of the lower knife roller corresponding to the two circles of upper ejector pins. A through hole communicating with the hollow cavity is formed on the roller core on one side of the lower knife roller away from the driving motor. A waste suction pipe fitting is connected to the roller core on one side of the lower knife roller away from the driving motor through a rotary joint. The waste suction pipe fitting is connected with a vacuum cleaner.

2. The circular knife small hole waste removal device according to claim 1, characterized in that, Both circles of upper ejector pins are welded and fixed on the upper knife roller.

3. The circular knife small hole waste removal device according to claim 1, characterized in that, A rounded corner structure is formed at the lower end of the upper ejector pin.

4. A circular knife small hole waste removing device according to claim 1, characterized in that, The rotary joint includes a shaft sleeve, a sealed bearing and a transition pipe fitting. The shaft sleeve is sleeved on the roller core on one side of the lower knife roller away from the driving motor. The sealed bearing is fixed in the shaft sleeve by interference fit. One end of the transition pipe fitting is inserted into the inner ring of the sealed bearing. The other end of the transition pipe fitting is connected with the waste suction pipe fitting through a pipe fitting joint.

5. The circular knife small hole waste removal device according to claim 4, characterized in that, An anti - detachment skirt is formed on the outer side of the end of the transition pipe fitting inserted into the inner ring of the sealed bearing.

6. The circular knife small hole waste removal device according to claim 4, characterized in that, The waste suction pipe fitting is a spring telescopic pipe.

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