Paper cutter and built-in cut-off knife device of photo machine

Abstract

The utility model discloses a paper knife and a built-in cut-off knife device of a photo machine. The paper knife comprises a front shell, an upper shell of a rear shell, a lower shell of the rear shell, a connecting screw, an upper knife, a lower knife, a gear box, a driving shaft gear, a driven gear, a lower knife gear and a lower shaft, cutter shaft elastic bearings are arranged on the two sides of the upper cutter respectively, and the lower shaft is located on the cutter shaft elastic bearings. The front shell and the rear shell are connected through connecting screws; the driving shaft gear and the driven gear are located in the gearbox, and the gearbox is located between the front shell and the lower shell of the rear shell. The driving shaft gear is in meshed connection with a driven gear, two ends of the driven gear are movably connected with the gearbox, the driven gear is in meshed connection with a lower cutter gear, the lower cutter gear is coaxially and fixedly connected with a lower cutter, and the lower cutter is connected with an upper cutter in a staggered mode. The utility model meets the requirement of the built-in cutter of the photo machine, and has the advantages of compact structure, stable and reliable transmission, low noise, difficulty in moving and deformation, and difficulty in paper damage.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutters, and more specifically, it relates to a paper cutter and an in-built cutting tool device for a photo printer. Background Art

[0002] After the existing photo printers complete paper printing, there is no automatic horizontal cutting device. Horizontal cutting usually needs to be manually completed with a cutting tool by workers. It is very difficult to unify the standards, and it is very easy to cut the product during the cutting process, which affects the paper quality and causes waste. The inventor disclosed an in-built cutting tool device for a photo printer in the utility model patent with the application number 202323319181.8. The cutting tool driving shaft drives the blade below the cutting tool to rotate through gear meshing, and the cutting tool driving shaft is inserted into the cutting tool driving shaft plug; the transmission belt drives the driving shaft driven wheel through friction, and the driving shaft driven wheel drives the cutting tool driving shaft plug to rotate; the design structure of the paper cutter in this application is unreasonable, the transmission is not stable, and the paper is easily damaged during paper cutting. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a paper cutter, which includes a front outer shell, an upper shell of the rear outer shell, a lower shell of the rear outer shell, connecting screws, an upper knife, a lower knife, a gear box, a driving shaft gear, a driven gear, a lower knife gear and a lower shaft;

[0004] Elastic bearings of the knife shaft are respectively arranged on both sides of the upper knife, and the lower shaft is located on the elastic bearings of the knife shaft;

[0005] The front outer shell and the lower shell of the rear outer shell are connected by connecting screws; the elastic bearings of the knife shaft of the lower shaft are respectively located on the front outer shell and the lower shell of the rear outer shell, and the elastic bearings of the knife shaft on both sides of the upper knife are respectively located on the front outer shell and the upper shell of the rear outer shell; the driving shaft gear and the driven gear are located in the gear box, and the gear box is located between the front outer shell and the lower shell of the rear outer shell; the driving shaft gear is meshed and connected with the driven gear, both ends of the driven gear are movably connected with the gear box, the driven gear is meshed and connected with the lower knife gear, the lower knife gear is coaxially and fixedly connected with the lower knife, and the lower knife and the upper knife are staggered and connected.

[0006] Preferably, the connecting screw is a cross recessed pan head screw.

[0007] An in-built cutting tool device for a photo printer includes the above-mentioned paper cutter.

[0008] Beneficial Effects:

[0009] The utility model meets the requirements of the in-built cutting tool of the photo printer, has a compact structure, stable and reliable transmission, low noise, is not easy to move and deform, the paper is not easy to be damaged, the cutting is safe, and the cutting cross-section is flat. Description of the Drawings

[0010] The technical solution of the utility model will be further described below with reference to the drawings:

[0011] Figure 1 This is the front view of the paper cutter of the present utility model.

[0012] Figure 2 This is the perspective view of the paper cutter of the present utility model.

[0013] Figure 3 This is the front view of the internal structure (excluding the outer shell) of the paper cutter of the present utility model.

[0014] Figure 4 This is the perspective view of the internal structure (excluding the outer shell) of the paper cutter of the present utility model.

[0015] Figure 5 This is the perspective view of the paper cutter of the present utility model from another angle.

[0016] In the figure: 1. Connecting screw, 2. Front outer shell, 3. Upper knife, 4. Lower knife, 5. Lower knife gear, 6. Driven gear, 7. Gear box, 8. Driving shaft gear, 9. Lower shaft, 10. Spring piece, 11. Upper shell of the rear outer shell, 12. Lower shell of the rear outer shell. Specific implementation mode

[0017] Next, the technical solution of the present utility model will be clearly and completely described in combination with specific implementation schemes. However, those skilled in the art should understand that the implementation schemes described below are only used to illustrate the present utility model and should not be regarded as limiting the scope of the present utility model. Based on the implementation schemes in the present utility model, all other implementation schemes obtained by those of ordinary skill in the art without creative work belong to the scope protected by the present utility model.

[0018] As Figures 1-5 shown, this embodiment discloses a paper cutter, which includes a front outer shell 2, an upper shell 11 of the rear outer shell, a lower shell 12 of the rear outer shell, a connecting screw 1, an upper knife 3, a lower knife 4, a gear box 7, a driving shaft gear 8, a driven gear 6, a lower knife gear 5, a lower shaft 9, and a spring piece 10.

[0019] Elastic bearings for the knife shaft are respectively arranged on both sides of the upper knife 3, and the lower shaft 9 is located on the elastic bearings for the knife shaft. The connecting screw 1 is a cross recessed pan head screw.

[0020] The front housing 2 and the lower housing 12 of the rear housing are connected by connecting screws 1. The cutter shaft elastic bearings of the lower shaft 9 are respectively located on the front housing 2 and the lower housing 12 of the rear housing. The cutter shaft elastic bearings on both sides of the upper cutter 3 are respectively located on the front housing 2 and the upper housing 11 of the rear housing. The driving shaft gear 8 and the driven gear 6 are located in the gearbox 7. The driving shaft gear 8 is meshed and connected with the driven gear 6. Both ends of the driven gear 6 are located on the gearbox 7. The driven gear 6 is meshed and connected with the lower cutter gear 5. The lower cutter gear 5 is coaxially and fixedly connected with the lower cutter 4. The lower cutter 4 is staggeredly connected with the upper cutter 3. The gearbox 7 is rotatable. The spring piece 10 is a torsion spring sleeved on the gearbox 7. When rotating in the positive direction, the elastic force of the spring piece 10 makes the gearbox 7 drive the driven gear 6 to approach the lower cutter gear 5, and the gears are meshed. When rotating in reverse, the gears are disengaged, and the spring piece 10 retracts elastically deformed.

[0021] The connecting screw 1 extends from the lower housing 12 of the rear housing and can fix the paper cutter to the device.

[0022] The gearbox 7 can rotate slightly around the axis of the driving shaft gear 8 in the housing. When the driving shaft gear 8 drives the cutter to rotate forward, the gears are meshed together. When the lower cutter gear 5 rotates in reverse, the gearbox 7 rotates around the axis of the driving shaft gear 8, pushing the driven gear 6 away, and the gears are not engaged, so that the paper will not be bitten when the paper is retracted.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element 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 the present invention.

[0024] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A paper cutter, characterized in that, It includes a front housing (2), a rear housing upper shell (11), a rear housing lower shell (12), connecting screws (1), an upper knife (3), a lower knife (4), a gearbox (7), a driving shaft gear (8), a driven gear (6), a lower knife gear (5) and a lower shaft (9); Elastic bearings for the knife shaft are respectively arranged on both sides of the upper knife (3), and the lower shaft (9) is located on the elastic bearings for the knife shaft; The front housing (2) and the rear housing lower shell (12) are connected by the connecting screws (1); the elastic bearings for the knife shaft of the lower shaft (9) are respectively located on the front housing (2) and the rear housing lower shell (12), and the elastic bearings for the knife shaft on both sides of the upper knife (3) are respectively located on the front housing (2) and the rear housing upper shell (11); the driving shaft gear (8) and the driven gear (6) are located inside the gearbox (7), and the gearbox (7) is located between the front housing (2) and the rear housing lower shell (12); the driving shaft gear (8) is meshed and connected with the driven gear (6), both ends of the driven gear (6) are movably connected with the gearbox (7), the driven gear (6) is meshed and connected with the lower knife gear (5), the lower knife gear (5) is coaxially and fixedly connected with the lower knife (4), and the lower knife (4) is staggeredly connected with the upper knife (3).

2. The paper cutter according to claim 1, characterized in that, The connecting screw (1) is a cross recessed pan head screw.

3. An in-built cutter device for a photo printer, characterized in that, It includes the paper cutter according to claim 1 or 2.

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