Corrugated paper preheating device for carton production

Abstract

The utility model relates to the technical field of preheating devices, in particular to a corrugated paper preheating device for carton production. The preheating device comprises mounting frames, connectors rotationally connected through bearings are arranged at one ends of the mounting frames, a preheating cylinder is fixedly connected between the two connectors, two identical compression rollers rotationally connected through bearings are arranged between the two mounting frames, and the two compression rollers are distributed on the two sides of the preheating cylinder. The lower end of the preheating cylinder is provided with a scraping assembly, the arc surface of the connector is fixedly connected with a chain wheel externally connected with a chain, one end of the connector is provided with a steam rotating joint, the inner wall of the preheating cylinder is fixedly connected with a spiral pipe, and the spiral pipe is fixed to the connector. When glue on the preheating cylinder needs to be scraped, the scraping plate on the round rod makes contact with the preheating cylinder, the preheating cylinder is matched with the chain through an external motor to drive the chain wheel to rotate, and then the effect of scraping the glue on the preheating cylinder is achieved as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of preheating device technology, and in particular to a preheating device for corrugated paper used in carton production. Background Technology

[0002] The preheating device is used to preheat the corrugated paper used in carton production. Currently, corrugated cardboard production on the market uses a combination of cardboard and corrugated paper. The general production process of corrugated paper involves pre-applying raw glue between the two, followed by preheating and extrusion to produce a qualified corrugated cardboard. The preheating device consists of a mounting frame, a preheating cylinder, pressure rollers, a connector, a sprocket, a steam rotary joint, and a spiral tube. When using the preheating device, the external steam pipe is connected to the steam rotary joint, allowing steam to enter the spiral tube through the connector, thereby heating the preheating cylinder. Then, the cardboard and corrugated paper bonded with glue are placed between the pressure rollers on both sides of the mounting frame and the preheating cylinder. The sprocket is connected to the external chain, and the sprocket is driven by an external motor to rotate, causing the preheating cylinder to rotate, thus preheating the corrugated paper used in carton production.

[0003] In their daily work, the inventors discovered that when using the preheating device, since the preheating of corrugated paper involves heating the adhesive used to bond the cardboard and the corrugated paper, there is some hot adhesive remaining in the preheated cardboard. Due to the compression of the cardboard, excess adhesive may flow onto the preheating cylinder. In order to avoid the excess adhesive affecting the corrugated paper, the adhesive is usually handled manually, which may increase the intensity of manual labor. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in actual use, corrugated paper preheating involves heating the adhesive used to bond the corrugated paper and the cardboard. However, some hot adhesive remains in the preheated corrugated paper, and due to the compression of the cardboard, excess adhesive may flow onto the preheating cylinder. To avoid this excess adhesive affecting the corrugated paper, the adhesive is usually handled manually, which may increase the labor intensity. Therefore, this invention provides a corrugated paper preheating device for carton production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a corrugated paper preheating device for carton production, comprising a mounting frame, a connector rotatably connected by a bearing at one end of the mounting frame, a preheating cylinder fixedly connected between the two connectors, two identical pressure rollers rotatably connected by a bearing between the two mounting frames, the two pressure rollers being distributed on both sides of the preheating cylinder, a scraping assembly at the lower end of the preheating cylinder, a sprocket of an external chain fixedly connected to the arc surface of the connector, a steam rotary joint installed at one end of the connector, a spiral tube fixedly connected to the inner wall of the preheating cylinder, the spiral tube being fixed to the connector, and the scraping assembly comprising a connecting plate fixedly connected between the two mounting frames, a circular rod slidably inserted into the upper end of the connecting plate, and a scraper fixedly connected to the upper end of the circular rod.

[0006] The effect achieved by the above components is as follows: by setting up a scraping component, when it is necessary to scrape off the glue on the preheating cylinder, the scraper on the round rod contacts the preheating cylinder, and the preheating cylinder is driven by an external motor and a chain to rotate the sprocket, thereby achieving the effect of scraping off the glue on the preheating cylinder as much as possible.

[0007] Preferably, one end of the circular rod is fixedly connected to a first spring, and the other end of the first spring is fixed to the connecting plate.

[0008] The effect achieved by the above components is as follows: by setting the first spring, the scraper contacts the preheating cylinder, so that the first spring is stretched, and under the reverse force of the first spring, the scraper fully contacts the preheating cylinder.

[0009] Preferably, a screw rod extends through the upper end of the connecting plate, the screw rod is fixedly connected to the scraper, and a nut is threaded onto the arc surface of the screw rod.

[0010] The effect achieved by the above components is as follows: when the scraper is not needed, drag the screw downward to separate the scraper from the preheating cylinder, and then tighten the nut to make the nut contact the connecting plate, thereby limiting the scraper.

[0011] Preferably, a collection box is provided between the two mounting brackets, and a fixing component is provided between the collection box and the mounting bracket.

[0012] The effect achieved by the above components is to collect the glue scraped off by the scraper by setting up a collection box.

[0013] Preferably, the inside of the collection box is provided with a heating wire, and the inside of the scraper is also provided with a heating wire.

[0014] The effect achieved by the above components is as follows: by setting up a heating wire and using a controller to make the heating wire work, the collection box and scraper are heated, thereby preventing the glue from solidifying and adhering to their surfaces.

[0015] Preferably, the fixing component includes a block fixedly connected to the lower end of the collection box, a pin is inserted into the front of the block, the pin is inserted into the mounting bracket, and the surface of the pin is provided with protrusions.

[0016] The effect achieved by the above components is: dragging the pin separates it from the mounting bracket, and then dragging the collection box for disassembly.

[0017] Preferably, one end of the pin is fixedly connected to a second spring, and the other end of the second spring is fixed to the block.

[0018] The effect achieved by the above components is that by setting a second spring, the pin is pulled and the pin is auxiliaryly limited.

[0019] In summary, the beneficial effects of this utility model are as follows:

[0020] In this invention, by setting up a scraping component, when it is necessary to scrape off the glue on the preheating cylinder, the scraper on the circular rod contacts the preheating cylinder. The preheating cylinder is driven by an external motor and a chain to rotate the sprocket, thereby achieving the effect of scraping off the glue on the preheating cylinder as much as possible. This solves the problem that since corrugated paper preheating involves heating the glue that bonds the cardboard and the corrugated paper, there is some hot glue that is flowing in the preheated cardboard. Due to the compression of the cardboard, excess glue may flow onto the preheating cylinder. In order to avoid the excess glue affecting the corrugated paper, the glue is usually handled manually, which may increase the labor intensity. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the fixing component of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the scraping component of this utility model;

[0024] Figure 4 This is a three-dimensional structural schematic diagram of a partial cross-section of the present invention.

[0025] Legend: 1. Mounting bracket; 2. Scraping assembly; 3. Fixing assembly; 4. Connector; 5. Sprocket; 6. Preheating cylinder; 7. Steam rotary joint; 8. Pressure roller; 9. Spiral tube; 21. Connecting plate; 22. Scraper; 23. Circular rod; 24. First spring; 25. Screw; 26. Nut; 27. Collection box; 31. Block; 32. Pin; 33. Second spring. Detailed Implementation

[0026] Reference Figure 1 and Figure 4 As shown, this utility model provides a technical solution: a corrugated paper preheating device for carton production includes a mounting frame 1, one end of the mounting frame 1 is provided with a connector 4 rotatably connected by a bearing, a preheating cylinder 6 is fixedly connected between the two connectors 4, two identical pressure rollers 8 are provided between the two mounting frames 1 and rotatably connected by a bearing, the two pressure rollers 8 are distributed on both sides of the preheating cylinder 6, a scraping component 2 is provided at the lower end of the preheating cylinder 6, a sprocket 5 of an external chain is fixedly connected to the arc surface of the connector 4, a steam rotary joint 7 is installed at one end of the connector 4, and a spiral tube 9 is fixedly connected to the inner wall of the preheating cylinder 6, the spiral tube 9 is fixed to the connector 4.

[0027] Reference Figure 2 and Figure 3 As shown in this embodiment: the scraping assembly 2 includes a connecting plate 21 fixedly connected between two mounting brackets 1. A circular rod 23 is slidably inserted into the upper end of the connecting plate 21, and a scraper 22 is fixedly connected to the upper end of the circular rod 23. By setting the scraping assembly 2, when it is necessary to scrape off the glue on the preheating cylinder 6, the scraper 22 on the circular rod 23 contacts the preheating cylinder 6. The preheating cylinder 6 is driven by an external motor and a chain to rotate the sprocket 5, thereby achieving the effect of scraping off the glue on the preheating cylinder 6 as much as possible. A first spring 24 is fixedly connected to one end of the circular rod 23, and the other end of the first spring 24 is fixed to the connecting plate 21. By setting the first spring 24, the scraper 22 contacts the preheating cylinder 6, so that the first spring 24 is under tension. Under the reverse force of the first spring 24, the scraper 22 fully contacts the preheating cylinder. 6. A screw 25 passes through the upper end of the connecting plate 21, and the screw 25 is fixedly connected to the scraper 22. The arc surface of the screw 25 is threaded with a nut 26. When the scraper 22 is not needed, the screw 25 is dragged downward to separate the scraper 22 from the preheating cylinder 6. Then the nut 26 is turned so that the nut 26 contacts the connecting plate 21, thereby limiting the scraper 22. A collection box 27 is provided between the two mounting brackets 1. A fixing component 3 is provided between the collection box 27 and the mounting bracket 1. By setting the collection box 27, the glue scraped by the scraper 22 is collected. The collection box 27 is equipped with a heating wire, and the scraper 22 is also equipped with a heating wire. By setting the heating wire, the controller makes the heating wire work, so that the collection box 27 and the scraper 22 are heated, thereby preventing the glue from solidifying and adhering to their surfaces.

[0028] Reference Figure 2As shown in this embodiment: the fixing component 3 includes a block 31 fixedly connected to the lower end of the collection box 27. A pin 32 is inserted into the front of the block 31. The pin 32 is inserted into the mounting frame 1. The surface of the pin 32 is provided with protrusions. Dragging the pin 32 separates it from the mounting frame 1, and then dragging the collection box 27 is used for disassembly. One end of the pin 32 is fixedly connected to a second spring 33. The other end of the second spring 33 is fixed to the block 31. By setting the second spring 33, the pin 32 is pulled and the pin 32 is auxiliaryly limited.

[0029] Working principle:

[0030] When using the preheating device, connect the external steam pipe to the steam rotary joint 7 (model QS-G32 from Wester), allowing steam to enter the spiral tube 9 through the connector 4, thereby heating the preheating cylinder 6. Then, place the cardboard and corrugated paper bonded with glue between the pressure rollers 8 on both sides of the mounting frame 1 and the preheating cylinder 6. Connect the sprocket 5 to the external chain, and drive the sprocket 5 to rotate through the external motor, causing the preheating cylinder 6 to rotate, thus preheating the corrugated paper used for carton production. By setting up the scraping component 2, when it is necessary to scrape off the glue on the preheating cylinder 6, the scraper 22 on the circular rod 23 contacts the preheating cylinder 6. The preheating cylinder 6 is driven by the external motor and chain to rotate the sprocket 5, thereby achieving the effect of scraping off the glue on the preheating cylinder 6 as much as possible. By setting up the first spring 24, the scraper 2... 2. When the scraper 22 contacts the preheating cylinder 6, the first spring 24 is stretched, and the scraper 22 is fully in contact with the preheating cylinder 6 under the reverse force of the first spring 24. When the scraper 22 is not needed, the screw 25 is dragged downward to separate the scraper 22 from the preheating cylinder 6. Then the nut 26 is turned so that the nut 26 contacts the connecting plate 21, thereby limiting the scraper 22. The glue scraped off by the scraper 22 is collected by the collection box 27. The heating wire is set and the controller makes the heating wire work to heat the collection box 27 and the scraper 22, thereby preventing the glue from solidifying and adhering to its surface. The pin 32 is dragged to separate from the mounting bracket 1. Then the collection box 27 is dragged to disassemble. The second spring 33 is set to pull the pin 32 and provide auxiliary limiting for the pin 32.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A preheating device for corrugated paper in carton production, comprising a mounting frame (1), characterized in that: One end of the mounting bracket (1) is provided with a connector (4) that is rotatably connected by a bearing. A preheating cylinder (6) is fixedly connected between the two connectors (4). Two identical pressure rollers (8) are provided between the two mounting brackets (1) that are rotatably connected by a bearing. The two pressure rollers (8) are distributed on both sides of the preheating cylinder (6). A scraping assembly (2) is provided at the lower end of the preheating cylinder (6). A sprocket (5) of an external chain is fixedly connected to the arc surface of the connector (4). A steam rotary joint (7) is installed at one end of the connector (4). A spiral tube (9) is fixedly connected to the inner wall of the preheating cylinder (6). The spiral tube (9) is fixed to the connector (4). The scraping assembly (2) includes a connecting plate (21) fixedly connected between the two mounting brackets (1). A circular rod (23) is slidably inserted into the upper end of the connecting plate (21). A scraper (22) is fixedly connected to the upper end of the circular rod (23).

2. The corrugated paper preheating device for carton production according to claim 1, characterized in that: One end of the circular rod (23) is fixedly connected to a first spring (24), and the other end of the first spring (24) is fixed to the connecting plate (21).

3. The corrugated paper preheating device for carton production according to claim 2, characterized in that: A screw (25) passes through the upper end of the connecting plate (21), and the screw (25) is fixedly connected to the scraper (22). A nut (26) is threaded onto the arc surface of the screw (25).

4. The corrugated paper preheating device for carton production according to claim 3, characterized in that: A collection box (27) is provided between the two mounting brackets (1), and a fixing component (3) is provided between the collection box (27) and the mounting bracket (1).

5. The corrugated paper preheating device for carton production according to claim 4, characterized in that: The collection box (27) is equipped with a heating wire inside, and the scraper (22) is also equipped with a heating wire inside.

6. The corrugated paper preheating device for carton production according to claim 5, characterized in that: The fixing component (3) includes a block (31) fixedly connected to the lower end of the collection box (27). A pin (32) is inserted into the front of the block (31). The pin (32) is inserted into the mounting bracket (1). The surface of the pin (32) is provided with protrusions.

7. A corrugated paper preheating device for carton production according to claim 6, characterized in that: One end of the pin (32) is fixedly connected to a second spring (33), and the other end of the second spring (33) is fixed to the block (31).

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