A rotary knife for cutting off labels

Abstract

The application provides a rotary knife for cutting off labels, which comprises a fixed frame and a cutting mechanism arranged in the fixed frame, and is used for rotating and cutting labels. The knife holder and the anvil on the cutting roller are in contact through synchronous movement of the cutting roller and the shaft. The cutting roller rotates clockwise, and the shaft rotates counterclockwise, so that the purpose of cutting off labels is achieved. The rear of the hard flat plate is provided with a soft elastic pad. When the blade of the knife is pressed, the soft elastic pad is thinned, and the knife blade can move along one side of the flat plate, so that the impact force of the anvil on the knife blade during work can be buffered. A cylinder is arranged on one side of the knife holder, which is used for penetrating the flat plate, the knife and the auxiliary part. The cylinder can prevent the knife from flying out and can also limit the position of the knife. When the knife is installed, the outer circle does not extend too far, and the knife can also be prevented from flying out due to centrifugal force.

Description

Technical Field

[0001] This invention relates to the field of labeling device technology, and in particular to a novel rotary blade for cutting labels. Background Technology

[0002] Plastic or plastic film labels are affixed around bottled water, beverages, or cans. Automatic labeling machines are generally used for this purpose. This technology is used on such labeling machines to cut continuous film labels into individual sheets, and then other parts of the labeling machine apply adhesive to the labels and affix them around the bottle (it can also be used on labeling machines that apply adhesive to the labels before cutting them).

[0003] When affixing plastic or plastic film labels around bottled water, beverages, or cans, a rotary label cutter is required. Currently, existing label cutters using compressed air bladders are complex to manufacture and costly. If the compressed air supply is manually shut off, or if the bladder ages and leaks, the blade will lose pressure and friction. Due to the high-speed rotation during operation, the blade may fly off due to centrifugal force, causing equipment damage or personal injury. Therefore, a new type of rotary label cutter is proposed. Summary of the Invention

[0004] In view of this, the present invention aims to provide a novel rotary blade for cutting labels, in order to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0005] The technical solution of this invention is implemented as follows: A novel rotary knife for cutting labels includes a fixed frame 1 and a cutting mechanism disposed inside the fixed frame 1 for rotary cutting of labels. The cutting mechanism includes a cutting roller 2 and a shaft 3 respectively disposed on the inner wall of the fixed frame 1. The shaft 3 is located on one side of the cutting roller 2. An anvil 4 is embedded on the outer wall of the cutting roller 2. A knife holder 5 is fixedly installed on the outer wall of the shaft 3. A cylindrical pin 6 is fixedly installed on one side of the knife holder 5. A flat plate 7, a blade 8, and an auxiliary component 9 are sequentially sleeved on the cylindrical pin 6 from left to right. A pressure plate 19 is provided on one side of the auxiliary component 9. A plurality of through holes 10 are sequentially opened on one side of the pressure plate 19 from top to bottom. A threaded hole corresponding to the through holes 10 is opened on one side of the knife holder 5. A sleeve 11 is inserted inside the multiple through holes 10. Two disc springs 12 are fitted on the outer wall of the sleeve 11. A first screw 13 is inserted inside the sleeve 11. The first screw 13 passes through the through hole 10 and is threadedly connected to the threaded hole. A hard plate 14 and an elastic pad 15 are provided between the auxiliary component 9 and the knife holder 5. The elastic pad 15 is located on one side of the hard plate 14. The cutting roller 2 and the shaft 3 can be driven by two servo motors (gear connection in the figure) and can be synchronously rotated by an electronic controller. A multiple anvils 4 are provided on the outer wall of the cutting roller 2. A mounting surface is provided on the outer wall of the shaft 3 for mounting a blade 8, or two or three equally divided circumferential mounting surfaces for mounting two or three blades 8.

[0006] Preferably, ventilation holes are evenly provided on the outer side of the cutting roller, which can adsorb the label onto the outer surface of the cutting roller.

[0007] Preferably, a screw hole is provided on one side of the auxiliary component, and a second screw is connected to the internal thread of the screw hole.

[0008] Preferably, one side of the pressure plate is concave in the middle, and the two ends of the concave shape form convex planes a and b, with a pressing on one side of the auxiliary component and b pressing on the plane of the tool holder.

[0009] Preferably, the upper and lower sides of the inner wall of the fixed frame are respectively connected to a label pull roller and a label press roller via bearings.

[0010] Preferably, the label pressing roller is located on one side of the label pulling roller, and the label pulling roller is located on one side of the cutting roller.

[0011] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0012] By synchronously moving the cutting roller and the shaft, the blade clamped and fixed on the blade holder can be made to contact the anvil on the cutting roller. The cutting roller rotates clockwise and the shaft rotates counterclockwise, thus achieving the purpose of cutting the label. By placing an elastic pad behind the hard plate, the elastic pad will thin when the blade is under pressure, and the blade can move along one side of the plate, thereby buffering the impact force of the blade on the anvil during operation. A cylinder is set on one side of the blade holder for passing through the plate, blade and auxiliary parts. The cylinder can prevent the blade from flying out and also limit the blade. When installing the blade, it will not extend too far beyond the outer circle, and it can also prevent the blade from flying out due to centrifugal force.

[0013] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial three-dimensional structural diagram of the cutting roller and shaft of the present invention;

[0017] Figure 3 This is a partial three-dimensional structural diagram of the tool holder of the present invention;

[0018] Figure 4 This is a planar cross-sectional view of the tool holder of the present invention;

[0019] Figure 5 This is an exploded view of the tool holder of the present invention;

[0020] Figure 6 This is a planar cross-sectional view of the pressure plate of the present invention.

[0021] Reference numerals: 1. Fixing frame; 2. Cutting roller; 3. Shaft; 4. Anvil; 5. Knife holder; 6. Cylindrical pin; 7. Flat plate; 8. Blade; 9. Auxiliary component; 10. Through hole; 11. Sleeve; 12. Disc spring; 13. First screw; 14. Hard plate; 15. Elastic pad; 16. Ventilation hole; 17. Screw hole; 18. Second screw; 19. Pressure plate; 20. Tag pull roller; 21. Tag press roller. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figure 1-6 As shown, this embodiment of the invention provides a novel rotary knife for cutting labels, including a fixed frame 1 and a cutting mechanism disposed inside the fixed frame 1, for rotary cutting of labels. The cutting mechanism includes a cutting roller 2 and a shaft 3 respectively disposed on the inner wall of the fixed frame 1, the shaft 3 being located on one side of the cutting roller 2, and an anvil 4 embedded on the outer wall of the cutting roller 2.

[0025] A tool holder 5 is fixedly installed on the outer wall of the shaft 3, a cylindrical pin 6 is fixedly installed on one side of the tool holder 5, and a flat plate 7, a cutting tool 8 and an auxiliary part 9 are sequentially sleeved on the cylindrical pin 6 from left to right. A pressure plate 19 is provided on one side of the auxiliary part 9.

[0026] Multiple through holes 10 are sequentially opened on one side of the pressure plate 19 from top to bottom. A threaded hole corresponding to the through hole 10 is opened on one side of the tool holder 5. A sleeve 11 is inserted inside the multiple through holes 10. Two disc springs 12 are fitted on the outer wall of the sleeve 11. A first screw 13 is inserted inside the sleeve 11. The first screw 13 passes through the through hole 10 and is threadedly connected to the threaded hole.

[0027] A hard plate 14 and an elastic pad 15 are provided between the auxiliary component 9 and the tool holder 5, with the elastic pad 15 located on one side of the hard plate 14.

[0028] The cutting roller 2 and the shaft 3 can be driven by two servo motors (connected by gears in the illustration), and their synchronous rotation can be achieved through an electronic controller;

[0029] The outer wall of the cutting roller 2 is provided with multiple anvils 4, and the outer wall of the shaft 3 is provided with a mounting surface for mounting a blade 8, or with two or three equally divided mounting surfaces for mounting two or three blades 8. When the cutting roller 2 rotates, the label will rotate with the cutting roller 2. The anvils 4 are embedded in the outer wall of the cutting roller 2, and the shaft 3 is installed parallel to the axis of the cutting roller 2. The blade 8 is fixedly held on the blade holder 5 on the outer wall of the rotating shaft 3. The blade 8 is tangent to the outer wall of the cutting roller 2. When the cutting roller 2 and the shaft 3 move synchronously, the blade 8 fixedly held on the blade holder 5 can be made to contact the anvil 4 on the cutting roller 2. The cutting roller 2 rotates clockwise, and the shaft 3 rotates counterclockwise, thereby achieving the purpose of cutting the label.

[0030] By placing an elastic pad 15 behind the hard plate 14, the elastic pad 15 will thin when the blade of the blade 8 is under pressure, and the blade 8 can move along one side of the plate 7, thereby buffering the impact force of the cutting board 4 on the blade 8 when it is working. A cylindrical pin 6 is provided on one side of the blade holder 5 for passing through the plate 7, the blade 8, and the auxiliary part 9. The cylindrical pin 6 can prevent the blade 8 from flying out and also limit the blade 8. When installing the blade 8, it will not extend too far beyond the outer circle, thereby preventing the blade 8 from flying out due to centrifugal force.

[0031] In this embodiment, specifically: ventilation holes 16 are uniformly opened on the outer side of the cutting roller 2, which can adsorb the label onto the outer circular surface of the cutting roller 2; by uniformly opening ventilation holes 16 on the outer side of the cutting roller 2, air can be drawn in during operation to adsorb the label onto the outer circular surface.

[0032] In this embodiment, specifically: a screw hole 17 is provided on one side of the auxiliary component 9, and a second screw 18 is connected to the internal thread of the screw hole 17; by providing a screw hole 17 on one side of the auxiliary component 9, the second screw 18 is screwed into the screw hole 17, thereby adjusting the gap between the auxiliary component 9 and the hard plate 14, and adjusting the distance of the blade 8 extending out of the outer circle.

[0033] To prevent the second screw 18 from loosening during operation, two second screws 18 can be screwed into each screw hole 17.

[0034] In this embodiment, specifically: one side of the pressure plate 19 is concave in the middle, and the two ends of the concave form convex planes a and b. a presses on one side of the auxiliary component 9, and b presses on the plane of the blade holder 5. After being pressed by the disc spring 12, pressure is applied to the pressure plate 19, and the pressure plate 19 transmits the pressure to the auxiliary component 9, which in turn transmits it to the blade 8, thereby achieving the purpose of fixing the blade 8.

[0035] In this embodiment, specifically: the upper and lower sides of the inner wall of the fixed frame 1 are respectively connected by bearings to a label pull roller 20 and a label press roller 21. The label press roller 21 is located on one side of the label pull roller 20, and the label pull roller 20 is located on one side of the cutting roller 2. The label press roller 21 and the label pull roller 20 are used to press and pull the label for conveying.

[0036] When the present invention is in operation: First, the label pull roller 20 and the label press roller 21 clamp the label. The label pull roller 20, driven by the servo motor, pulls the label toward the surface of the cutting roller 2. The ventilation holes 16 on its surface attract the label. When the cutting roller 2 rotates, the label will rotate with the cutting roller 2. An anvil 4 is embedded on the outer wall of the cutting roller 2. A shaft 3 is installed parallel to the axis of the cutting roller 2. A fixed blade 8 is clamped on the blade holder 5 on the outer wall of the rotating shaft 3. The blade 8 is tangent to the outer wall of the cutting roller 2. When the cutting roller 2 and the shaft 3 move synchronously, the fixed blade 8 clamped on the blade holder 5 can be made to contact the anvil 4 on the cutting roller 2. The cutting roller 2 rotates clockwise and the shaft 3 rotates counterclockwise, thereby achieving the purpose of cutting the label.

[0037] By placing an elastic pad 15 behind the hard plate 14, the elastic pad 15 will thin when the blade of the blade 8 is under pressure, and the blade 8 can move along one side of the plate 7, thereby buffering the impact force of the cutting board 4 on the blade 8 when it is working. A cylindrical pin 6 is provided on one side of the blade holder 5 for passing through the plate 7, the blade 8, and the auxiliary part 9. The cylindrical pin 6 can prevent the blade 8 from flying out and also limit the blade 8. When installing the blade 8, it will not extend too far beyond the outer circle, and it can also prevent the blade 8 from flying out due to centrifugal force.

[0038] By opening a screw hole 17 on one side of the auxiliary part 9, a second screw 18 is screwed into the screw hole 17, thereby adjusting the gap between the auxiliary part 9 and the hard plate 14, and adjusting the distance of the blade 8 extending out of the outer circle.

[0039] To prevent the second screw 18 from loosening during operation, two second screws 18 can be screwed into each screw hole 17.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A rotary knife for cutting new type of labels, comprising a fixed frame (1) and a cutting mechanism arranged inside the fixed frame (1) for cutting the labels in rotation, characterized in that: The cutting mechanism includes a cutting roller (2) and a shaft (3) arranged on the inner wall of the fixed frame (1), the shaft (3) is located on one side of the cutting roller (2), and an anvil (4) is embedded on the outer wall of the cutting roller (2); A knife seat (5) is fixedly installed on the outer wall of the shaft (3), a cylindrical pin (6) is fixedly installed on one side of the knife seat (5), a flat piece (7), a blade (8) and an auxiliary piece (9) are sequentially sleeved on the cylindrical pin (6) from left to right, and one side of the auxiliary piece (9) is provided with a pressing plate (19); A plurality of through holes (10) are sequentially formed in one side of the pressing plate (19) from top to bottom, a threaded hole corresponding to the through hole (10) is formed in one side of the knife seat (5), a sleeve (11) is inserted into the plurality of through holes (10), two disc springs (12) are sleeved on the outer wall of the sleeve (11), a first screw (13) is inserted into the sleeve (11), and the first screw (13) is threadedly connected between the through hole (10) and the threaded hole; A hard flat plate (14) and an elastic cushion (15) are arranged in the middle of the auxiliary piece (9) and the knife seat (5), and the elastic cushion (15) is located on one side of the hard flat plate (14); The cutting roller (2) and the shaft (3) are driven by a servo motor to realize synchronous rotation; A plurality of anvils (4) are arranged on the outer wall of the cutting roller (2), the outer wall of the shaft (3) is provided with an installation surface for installing one blade (8), or is provided with two or three equiangularly distributed installation surfaces for installing two or three blades (8); One side of the pressing plate (19) is concave, and the two ends of the concave part form convex planes a and b, a is pressed on one side of the auxiliary piece (9), and b is pressed on the plane of the knife seat (5); a screw hole (17) is formed in one side of the auxiliary piece (9), and a second screw (18) is threadedly connected in the screw hole (17); the two ends of the cutting roller (2) and the shaft (3) are movably connected to the upper and lower sides of the inner wall of the fixed frame (1) through bearings.

2. A rotary knife for cutting new-style cutting labels according to claim 1, characterized in that: Ventilation holes (16) are uniformly formed in the outer side of the cutting roller (2), so that labels can be adsorbed on the outer circular surface of the cutting roller (2).

3. A rotary knife for cutting off tags according to claim 1, characterized in that: The upper and lower sides of the inner wall of the fixed frame (1) are also connected with a label pulling roller (20) and a label pressing roller (21) through bearings respectively.

4. A rotary knife for cutting new-style cutting labels according to claim 3, characterized in that: The label pressing roller (21) is located on one side of the label pulling roller (20), and the label pulling roller (20) is located on one side of the cutting roller (2). The label pressing roller (21) is located on one side of the label pulling roller (20), and the label pulling roller (20) is located on one side of the cutting roller (2).

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