Paperboard film coating cut-off machine

Abstract

The utility model relates to a paperboard film-covering cut-off machine and belongs to the field of paperboard film-covering equipment. The paperboard film-covering cut-off machine comprises a conveying table and a rack which are connected with each other, the rack is in transmission connection with a cut-off tool and a crimping mechanism, the cut-off tool and the crimping mechanism move perpendicular to the top face of the conveying table, and a blade point of the cut-off tool is provided with a groove and is glued with a resistance wire; the crimping mechanism is slidably connected to the side wall of the cut-off tool; the technical problem that in the prior art, a cut-off mechanism is poor in finished product quality can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of cardboard laminating equipment, and particularly relates to a cardboard laminating cutting machine. Background Art

[0002] After the cardboard is laminated, it needs to be cut by a cutting knife, and the selection of the cutting knife has a great influence on the quality of the finished product after the cardboard is laminated.

[0003] A prior art patent with the publication number CN117182996A discloses an output mechanism with a hot cutting knife device, including an output bracket and a conveyor belt arranged on the output bracket. The feature is that: the output bracket is provided with a hot cutting knife device capable of circular cutting above the conveyor belt.

[0004] The prior art has the following problems:

[0005] As Figure 7 shown, a rotating hot cutting knife 6 is used to cut the laminated cardboard 8. The cutting edge will rotate to form a fan surface, which will cause the area of the film 7 on the surfaces of both ends of the product after cutting to be smaller than the area of the cardboard 8, thus affecting the product quality. Content of the Utility Model

[0006] The utility model provides a cardboard laminating cutting machine, which can solve the technical problem of poor quality of the finished product of the cutting mechanism in the prior art.

[0007] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0008] The present application provides a cardboard laminating cutting machine, including a conveying table and a machine frame connected to each other. The machine frame is drivingly connected with a cutting knife and a pressing mechanism. The cutting knife and the pressing mechanism move perpendicular to the top surface of the conveying table. A groove is opened at the tip of the cutting edge of the cutting knife and a resistance wire is glued thereto. The pressing mechanism is slidably connected to the side wall of the cutting knife.

[0009] Through the above technical solution, the resistance wire is used to replace the cutting edge to vertically cut the laminated cardboard pressed by the pressing mechanism, and the cut is smoother and flatter; at the same time, due to the pressing of the pressing mechanism, the hot cutting is not easy to cause product misalignment due to adhesion, and the product quality is better.

[0010] In the utility model, a cylinder is connected between the machine frame and the cutting knife and the pressing mechanism. The cylinder drives the cutting knife and the pressing mechanism to move up and down, and the cutting knife and the pressing mechanism move independently of each other.

[0011] Through the above technical solution, the cylinder drive enables the cutting knife and the pressing mechanism to have a faster response speed on the premise of avoiding excessive displacement and causing a collision with the machine, and improves the cutting efficiency.

[0012] In the present utility model, a plurality of exhaust grooves are formed on the side surface of the cutting knife, and the exhaust grooves are arranged between the cutting knife and the crimping mechanism.

[0013] By means of the above technical solution, the exhaust grooves are used to release the gas in the cavity formed among the cutting knife, the crimping mechanism and the film, so as to avoid the influence on the connection between the film and the cardboard caused by the compression of the gas and reduce the yield rate.

[0014] In the present utility model, a cooling channel is formed at the bottom of the crimping mechanism, a cooling plate is abutted below the cooling channel, the cooling plate is connected to the bottom of the crimping mechanism, and two transfer interfaces, namely a first transfer interface and a second transfer interface, are respectively connected to both ends of the cooling channel.

[0015] By means of the above technical solution, a cooling medium is introduced into the cooling channel to avoid the melting of the film at the crimping part caused by the too high temperature of the resistance wire, so as not to affect the finished product quality.

[0016] In the present utility model, a sealing ring is abutted between the cooling channel and the cooling plate.

[0017] By means of the above technical solution, the sealing ring is used to increase the sealing performance between the cooling channel and the cooling plate.

[0018] In the present utility model, the width of the glued part between the cutting knife and the resistance wire is equal to the diameter of the resistance wire.

[0019] By means of the above technical solution, after the resistance wire melts the film and cuts off the cardboard, it is ensured that the cutting knife will not cause secondary extrusion to the two side cut edges to form curling, thereby improving the product quality.

[0020] In the present utility model, the crimping mechanism includes a first pressing plate and a second pressing plate. The first pressing plate and the second pressing plate are detachably connected. The first pressing plate and the second pressing plate are respectively connected to the frame through the air cylinders, and the first pressing plate and the second pressing plate are inserted above the cooling plate.

[0021] By means of the above technical solution, the split crimping mechanism is adopted, so that the processing difficulty of the through hole of the cutting knife is reduced and the manufacturing cost is reduced. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is an axonometric view of a cardboard film covering cutting machine provided by an embodiment of the present utility model;

[0024] Figure 2 The front view of a cardboard film laminating and cutting machine provided by an embodiment of the present utility model;

[0025] Figure 3 is Figure 2 the sectional view at A-A in

[0026] Figure 4 is Figure 3 the partial enlarged view at B in

[0027] Figure 5 is Figure 2 the partial schematic diagram of the sectional view at C-C in

[0028] Figure 6 the exploded view of the cutting knife and the crimping mechanism provided by an embodiment of the present utility model;

[0029] Figure 7 the cutting schematic diagram of a rotary hot cutting knife in the prior art.

[0030] Icon: 1 - conveying table; 2 - frame; 3 - cutting knife; 301 - resistance wire; 302 - wire groove; 303 - exhaust groove; 401 - first pressing plate; 402 - second pressing plate; 403 - cooling plate; 405 - cooling channel; 406 - sealing ring; 407 - first adapter; 408 - second adapter; 5 - cylinder; 6 - hot cutting knife; 7 - film; 8 - cardboard. Specific embodiments

[0031] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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 thus should not be construed as a limitation to the present application.

[0033] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0034] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be welding, bolt connection, or riveting; 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 a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0035] Embodiment

[0036] Please refer to Figures 1-6 , Figures 1-6 which shows an embodiment of the present application.

[0037] This embodiment provides a cardboard film laminating and cutting machine. As Figure 1 shown, it includes a conveying table 1 and a machine frame 2 that are detachably connected to each other. The machine frame 2 is drivingly connected with a cutting knife 3 and a crimping mechanism. The cutting knife 3 and the crimping mechanism move perpendicular to the top surface of the conveying table 1. As Figure 4 shown, a groove is opened at the tip of the cutting knife 3, and a resistance wire 301 is glued with epoxy resin. As Figure 6 shown, both ends of the resistance wire 301 are connected to an energized circuit through wire grooves 302 opened at both ends of the cutting knife 3. The crimping mechanism is slidably connected to the side wall of the cutting knife 3.

[0038] During use, the crimping mechanism moves downward to press the film-laminated cardboard 8, and then the cutting knife 3 quickly moves downward. The resistance wire 301 first melts and cuts the film 7, then further heats the cardboard 8, and finally presses and breaks the heated and embrittled cardboard 8.

[0039] It should be noted that for direct cutting with a traditional metal cutting knife, due to different cutting edge parameters and wear conditions, burrs are likely to form at the fracture, which reduces the product quality; while for the rotary hot cutting knife 6 as Figure 7 shown, more film 7 will be melted and the cardboard 8 will be exposed. In this embodiment, the resistance wire 301 is heated to 200 degrees Celsius, and the ignition point of ordinary cardboard 8 is generally between 230 degrees Celsius and 250 degrees Celsius. In this way, the cardboard 8 is heated to make it embrittled and then pressed and broken, and the fracture is neater without burrs.

[0040] Through the above technical solution, the resistance wire 301 is used to vertically cut the film-laminated cardboard 8 pressed by the crimping mechanism instead of the cutting edge, and the cut is smoother and flatter; at the same time, due to the pressing of the crimping mechanism, hot cutting is not likely to cause product misalignment due to adhesion, and the product quality is better.

[0041] As a preferred embodiment, as Figure 1 and Figure 2As shown, a cylinder 5 is detachably connected between the above-mentioned frame 2, the cutting knife 3 and the crimping mechanism. The cylinder 5 drives the cutting knife 3 and the crimping mechanism to move up and down, and the cutting knife 3 and the crimping mechanism move independently of each other.

[0042] It should be noted that since the cutting knife 3 has actions of heating and extrusion, using the cylinder 5 to drive can stabilize the input air pressure. In this way, it is ensured that the force on the resistance wire 301 is always positively correlated with the air pressure. Thus, the resistance wire 301 can always maintain a fixed pressure on the cardboard 8, and it can also prevent the resistance wire 301 from hitting the conveying table 1 and deforming.

[0043] Through the above technical solution, using the cylinder 5 to drive enables the cutting knife 3 and the crimping mechanism to have a faster response speed on the premise of avoiding excessive displacement and causing a collision with the machine, thereby improving the cutting efficiency.

[0044] As a preferred embodiment, as Figure 6 shown, a plurality of exhaust grooves 303 are opened on the side surface of the above-mentioned cutting knife 3. The exhaust grooves 303 are opened perpendicular to the plane of the conveying table 1, and the exhaust grooves 303 are arranged between the cutting knife 3 and the crimping mechanism.

[0045] Through the above technical solution, the exhaust grooves 303 are used to release the gas in the cavity formed between the cutting knife 3, the crimping mechanism and the film 7, so as to avoid the influence on the connection between the film 7 and the cardboard 8 caused by the compressed gas and reduce the yield rate.

[0046] As a preferred embodiment, as Figures 4-6 shown, the above-mentioned crimping mechanism is composed of a first pressing plate 401 and a second pressing plate 402 connected by screws. A U-shaped cooling plate 403 is inserted into its lower part. A cooling channel 405 is opened at the bottom of both the first pressing plate 401 and the second pressing plate 402. The cooling channel 405 abuts against the cooling plate 403 below to form a D-shaped channel. After the cooling plate 403 is sleeved on the bottom of the crimping mechanism, it is fastened to the sides of the first pressing plate 401 and the second pressing plate 402 by side lock screws (not shown in the drawing). As Figure 5 and Figure 6 shown, both ends of the cooling channel 405 are opened upward and are respectively connected with a first adapter 407 and a second adapter 408. Among them, the first adapter 407 and the second adapter 408 are respectively the inlet and outlet of the cooling medium. The cooling medium is specifically selected as cooling water, and the cooling plate 403 is cooled by circulating through an external pump body and a water tank.

[0047] During use, as Figure 4 shown, since the resistance wire 301 needs to be continuously energized and heated, it is easy to form heat accumulation on the conveying table 1, the first pressing plate 401, the second pressing plate 402 and the cooling plate 403, which will cause the film 7 in the non-cutting area to melt. Therefore, during operation, it is necessary to keep cooling water continuously flowing through the cooling channel 405 for cooling.

[0048] Through the above technical solution, cooling medium is introduced into the cooling channel 405 to prevent the temperature of the resistance wire 301 from being too high, which may cause the film 7 at the crimping part to melt and affect the quality of the finished product. The split crimping mechanism is adopted to reduce the processing difficulty of the through-hole of the cutting knife 3 and the manufacturing cost.

[0049] As a preferred implementation, as Figure 4 and Figure 6 shown, a sealing ring 406 is abutted between the above cooling channel 405 and the cooling plate 403.

[0050] Through the above technical solution, the sealing ring 406 is adopted to increase the sealing performance between the cooling channel 405 and the cooling plate 403.

[0051] As a preferred implementation, the above sealing ring 406 is a hot-melt rubber sealing ring.

[0052] It should be noted that when the resistance wire 301 overheats due to current fluctuations in the power supply circuit, a large amount of heat accumulates, which may cause the cardboard 8 to burn. After the high temperature generated by the combustion melts the sealing ring 406, the cooling water seeps out to extinguish the fire and reduce the loss.

[0053] Through the above technical solution, the hot-melt rubber sealing ring 406 is adopted to melt when the cutting knife 3 and / or the cooling plate 403 overheat, so that the cooling medium seeps out to further cool the whole machine, avoid fire and improve the safety of use.

[0054] As a preferred implementation, the above resistance wire 301 is a tin wire.

[0055] It should be noted that the melting point of the tin wire is 231.9 degrees Celsius, while the ignition point of ordinary cardboard 8 is generally between 230 degrees Celsius and 250 degrees Celsius. When there is a risk of the cardboard 8 burning, the tin wire will melt to protect the entire device from being burned out.

[0056] Through the above technical solution, the tin wire with a lower melting point is adopted to avoid the burning of the cardboard 8 after film coating caused by the high temperature of the resistance wire 301, and the safety is stronger.

[0057] As a preferred implementation, as Figure 3 and Figure 4 shown, the width of the glued part between the above cutting knife 3 and the resistance wire 301 is equal to the diameter of the resistance wire 301.

[0058] Through the above technical solution, it is ensured that after the resistance wire melts the film and cuts off the cardboard, the cutting knife will not cause secondary extrusion to the two sides of the cut to cause curling, and the product quality is improved.

[0059] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope recorded in the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims described above.

Claims

1. A cardboard laminating and cutting machine, comprising a conveying platform (1) and a frame (2) connected to each other, characterized in that: The frame (2) is drivingly connected to a cutting knife (3) and a crimping mechanism, the cutting knife (3) and the crimping mechanism move perpendicularly to the top surface of the conveying platform (1), a groove is provided on the tip of the cutting knife (3) and a resistance wire (301) is glued thereto, and the crimping mechanism is slidably connected to the side wall of the cutting knife (3).

2. The cardboard laminating and cutting machine according to claim 1, characterized in that: A cylinder (5) is connected between the frame (2) and the cutting knife (3) and the crimping mechanism respectively, and the cylinder (5) drives the cutting knife (3) and the crimping mechanism to move upward and downward.

3. The cardboard laminating and cutting machine according to claim 2, characterized in that: A plurality of exhaust grooves (303) are provided on the side of the cutting blade (3), and the exhaust grooves (303) are arranged between the cutting blade (3) and the crimping mechanism.

4. The cardboard laminating and cutting machine according to claim 3, characterized in that: A cooling channel (405) is provided at the bottom of the crimping mechanism, a cooling plate (403) is abutted below the cooling channel (405), the cooling plate (403) is connected to the bottom of the crimping mechanism, and the two ends of the cooling channel (405) are respectively connected to an adapter port 1 (407) and an adapter port 2 (408).

5. The cardboard laminating and cutting machine according to claim 4, characterized in that: A sealing ring (406) is abutted between the cooling channel (405) and the cooling plate (403).

6. The cardboard laminating and cutting machine according to claim 5, characterized in that: The width of the glued portion between the cutting blade (3) and the resistance wire (301) is equal to the diameter of the resistance wire (301).

7. The cardboard laminating and cutting machine according to any one of claims 4 to 6, characterized in that: The crimping mechanism includes a pressing plate 1 (401) and a pressing plate 2 (402), wherein the pressing plate 1 (401) and the pressing plate 2 (402) are detachably connected, and the pressing plate 1 (401) and the pressing plate 2 (402) are respectively connected to the frame (2) via the cylinder (5), and the pressing plate 1 (401) and the pressing plate 2 (402) are plugged onto the cooling plate (403).

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