A rotary cutter set

Abstract

The utility model relates to a kind of rotary cutter groups, belong to printer cutter device technical field, solve the problem that artificial cutting printing paper cannot guarantee flatness in prior art;It includes backplate, side plate, rotary knife, straight knife and driving assembly, wherein, side plate is provided with two groups, respectively located at the both ends of backplate, and parallelly arranged, rotary knife is connected between two groups of side plates, straight knife is also connected between two groups of side plates, straight knife edge is close to rotary knife, driving assembly is set in the side of backplate, and rotary knife is driven to rotate;Printed paper such as bill passes between the gap between rotary knife and straight knife edge, and rotary knife is driven to rotate by driving assembly, and the paper between rotary knife and straight knife is cut off.

Description

Technical Field

[0001] This utility model relates to the technical field of printer cutter devices, specifically to a rotary cutter assembly. Background Technology

[0002] In daily life, various shopping and office settings, such as shopping malls, supermarkets, stores, and company finance departments, typically use receipt printers to print various special receipts. Since receipt printers usually use roll-type paper, the receipts need to be cut after printing.

[0003] Currently, most receipt printers require manual tearing to cut the receipts, which easily damages the printed receipts and results in uneven, unsightly edges. Although some receipt printers have a serrated edge at the receipt exit to facilitate cutting, this method can cause paper jams when cutting larger receipts, leading to wrinkled and uneven paper.

[0004] Based on this, this solution develops and designs a rotary cutter assembly to cut the printing paper, using an automated mechanical structure to replace manual cutting and ensure the flatness of the paper edges. Utility Model Content

[0005] Based on the above description, this utility model provides a rotary cutting blade assembly to solve the problem that manual cutting of printing paper in the prior art cannot guarantee flatness.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A rotary cutting blade assembly, comprising:

[0008] Back panel;

[0009] The side panels are provided in two sets, located at both ends of the back panel and arranged in parallel.

[0010] A rotary cutter is connected between the two sets of side plates;

[0011] A straight blade is connected between the two sets of side plates, with its cutting edge close to the rotary blade;

[0012] A drive assembly, located on the side of the back plate, drives the rotary cutter to rotate.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the driving component includes:

[0015] A fixing plate is attached to the side plate;

[0016] The motor is connected to the fixed plate;

[0017] The gear set is connected to the shafts of the motor and the rotary cutter, respectively.

[0018] Furthermore, a micro switch and a sensing cam are provided on the side plate, and the sensing cam is connected to the shaft of the rotary cutter.

[0019] Furthermore, the side plate is provided with a torsion spring that presses the blade of the straight knife toward the direction of the rotary knife. One end of the torsion spring is inserted into the side plate, and the other end abuts against the side wall of the straight knife.

[0020] Furthermore, grooves are provided on both ends of the straight blade, and through holes corresponding to the grooves are provided on the side plate. A fixing pin is provided on the side plate, which passes through the through hole and is inserted into the groove. The fixing pin includes a first pin and a second pin. The first pin is fixedly connected to the side plate. A spring is connected to the bottom of the groove corresponding to the second pin. A through hole perpendicular to its axis is provided on the second pin, and a locking nut is screwed into the through hole.

[0021] Furthermore, the first pin is disposed on the side plate near the drive assembly.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0023] This design places the straight blade against the rotary blade, and the drive assembly rotates the rotary blade to cut the paper passing between the rotary blade and the straight blade. Attached Figure Description

[0024] Figure 1 A schematic diagram of the structure of a rotary cutting blade assembly provided in an embodiment of this utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the rotary cutter and straight cutter in the process;

[0026] Figure 3 for Figure 1 A schematic diagram of the straight blade and side plate in the middle;

[0027] Figure 4 for Figure 3 A longitudinal section along the first pin axis;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Straight blade; 2. Rotary blade; 3. Side plate; 4. Fixing plate; 5. Back plate; 6. Motor; 7. Gear set; 8. Micro switch; 9. Sensing cam; 10. Torsion spring; 11. First pin; 12. Second pin; 13. Locking nut; 14. Spring. Detailed Implementation

[0030] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0032] It is understood that spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “above,” etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “below,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0033] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0034] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0035] like Figure 1-4The illustrated rotary cutting blade assembly includes a back plate 5, side plates 3, a rotary blade 2, a straight blade 1, and a drive assembly. Two sets of side plates 3 are arranged parallel to each other at opposite ends of the back plate 5. The rotary blade 2 is connected between the two sets of side plates 3. The straight blade 1 is also connected between the two sets of side plates 3, with its blade edge close to the rotary blade 2. The drive assembly is located on the side of the back plate 5 and drives the rotary blade 2 to rotate. Printed paper, such as invoices, passes through the gap between the blades of the rotary blade 2 and the straight blade 1. The drive assembly drives the rotary blade 2 to rotate, cutting the paper passing between the rotary blade 2 and the straight blade 1.

[0036] The drive assembly includes a fixed plate 4, a motor 6, and a gear set 7. The fixed plate 4 is connected to the side plate 3, and the motor 6 is fixedly mounted on the fixed plate 4. The gear set 7 is located outside the side plate 3 and is connected to the shafts of the motor 6 and the rotary cutter 2, respectively. The gear set 7 includes a large gear and a small gear. The small gear is sleeved on the output shaft of the motor 6, and the large gear is sleeved on the shaft of the rotary cutter 2. The motor 6 drives the small gear, which in turn drives the rotary cutter 2 to rotate through the large gear.

[0037] Specifically, a micro switch 8 and a sensing cam 9 are provided on the side plate 3. The sensing cam 9 is connected to the shaft of the rotary cutter 2. The rotary cutter 2 drives the sensing cam 9 to rotate. After the rotary cutter 2 rotates one revolution, the micro switch 8 senses the sensing cam 9, and the motor 6 stops rotating to complete one cut.

[0038] Specifically, a torsion spring 10 is provided on the side plate 3 to press the blade of the straight blade 1 towards the rotary blade 2. One end of the torsion spring 10 is inserted into the side plate 3, and the other end abuts against the side wall of the straight blade 1. The torsion spring 10 not only ensures that the blade of the straight blade 1 is close to the rotary blade 2, but also allows the straight blade 1 to be manually moved away from the rotary blade 2, increasing the gap between them, thereby completing the paper feeding operation.

[0039] Prolonged use will dull the blade of the straight blade 1, affecting its ability to cut paper. Therefore, this solution improves upon this. In one embodiment, grooves are provided on both ends of the straight blade 1, and through holes corresponding to the grooves are provided on the side plate 3. A fixing pin is provided on the side plate 3, which passes through the through hole and is inserted into the groove. The fixing pin includes a first pin 11 and a second pin 12. The first pin 11 is fixedly connected to the side plate 3. A spring 14 is connected to the bottom of the groove corresponding to the second pin 12. A through hole perpendicular to its axis is provided on the second pin 12, and a locking nut 13 is screwed into the through hole.

[0040] The first pin 11 is located on the side plate 3 near the drive assembly. Since this location is close to the gear set 7 and inconvenient to disassemble, the first pin 11 is designed to be fixedly connected to the side plate 3. The fixing method can be a screw connection. The first pin 11 is inserted into the bottom of the groove. The second pin 12 moves away from the straight blade 1 body under the action of the spring 14, but stops under the contact of the locking nut 13 and the inner wall of the side plate 3, thus completing the fixation of the second pin 12 to the side plate 3. To disassemble the straight blade 1 for grinding or replacement, press the end of the second pin 12 to make it insert deeper into the groove. At this time, the locking nut 13 moves away from the side plate 3. Rotate the locking nut 13 to disengage the second pin 12, allowing the second pin 12 to be pulled away from the side plate 3. The straight blade 1 moves away from the first pin 11, thus disengaging from the first pin 11 and being removed between the two side plates 3.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary cutting blade assembly, characterized in that, include: Back panel; The side plate is provided in two sets, located at both ends of the back plate and arranged in parallel; the side plate is provided with a micro switch and a sensing cam, the sensing cam being connected to the shaft of the rotary cutter; the side plate is provided with a torsion spring that presses the blade of the straight cutter toward the rotary cutter, one end of the torsion spring being inserted into the side plate and the other end abutting against the side wall of the straight cutter. A rotary cutter is connected between the two sets of side plates; A straight blade is connected between the two sets of side plates, with its blade close to the rotary blade. Grooves are formed on both ends of the straight blade, and through holes corresponding to the grooves are formed on the side plates. A fixing pin is provided on the side plate, passing through the through hole and inserted into the groove. The fixing pin includes a first pin and a second pin. The first pin is fixedly connected to the side plate, and a spring is connected to the bottom of the groove corresponding to the second pin. A through hole perpendicular to its axis is formed on the second pin, and a locking nut is screwed into the through hole. A drive assembly, located on the side of the back plate, drives the rotary cutter to rotate.

2. The rotary cutting blade assembly according to claim 1, characterized in that, The driving component includes: A fixing plate is attached to the side plate; The motor is connected to the fixed plate; The gear set is connected to the shafts of the motor and the rotary cutter, respectively.

3. The rotary cutting blade assembly according to claim 1, characterized in that, The first pin is located on the side plate near the drive assembly.

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