Glue amount and thickness detection device for paperboard

Abstract

The utility model discloses a glue amount and thickness detection device for a paperboard in the technical field of glue amount detection for printing, and aims to solve the problem that the printing ink printing amount and thickness of the paperboard are inconvenient to detect, regulate and control in the prior art. The device comprises a base plate, the base plate comprises a main body plate and limiting flanges arranged on the two sides of the main body plate, an installation support is arranged on the main body plate, and an ultrasonic glue amount detection device is installed on the installation support; an adsorption hole is formed in the main body plate; an ultrasonic transmitter and an ultrasonic receiver of the ultrasonic glue amount detection device point to the position of the adsorption hole in the main body plate; the device is used for rapidly detecting the thickness of the glue amount in the paperboard printing process, efficient detection is achieved by stably conveying paperboards, and therefore the ink supply mechanism at the front end can regulate and control the ink outlet amount of ink according to the actual situation.

Description

Technical Field

[0001] The utility model relates to a device for detecting the thickness of glue used in paperboard, belonging to the technical field of detecting the amount of glue used in printing. Background Art

[0002] When printing on cardboard, a layer of protective ink needs to be printed on its surface. The ink supply is provided by the corresponding ink supply position. If the supply is too much, the ink layer on the product surface will be too thick, which will not only affect the appearance of the product but also cause waste of ink. If the ink supply is too little, it will easily lead to uneven ink coating and rapid wear of the printing layer. Therefore, in order to facilitate the regulation of the actual ink supply in production, a reliable, effective and convenient ink thickness detection mechanism is urgently needed to perform real-time detection of the ink thickness on the printed surface. Summary of the invention

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a device for detecting the thickness of glue used on paperboard, which is used to quickly detect the thickness of glue used during paperboard printing and realize efficient detection by stably conveying paperboard, so that the ink supply mechanism at the front end can adjust the ink output according to actual conditions.

[0004] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0005] The present invention provides a device for detecting the thickness of glue used on paperboard, comprising a base plate, the base plate comprising a main body plate and limit retaining edges arranged on both sides of the main body plate, the main body plate is provided with a mounting bracket, and an ultrasonic glue amount detection device is installed on the mounting bracket;

[0006] The main body plate is provided with adsorption holes, and the ultrasonic transmitter and the ultrasonic receiver of the ultrasonic glue quantity detection device are both directed to the positions of the adsorption holes on the main body plate.

[0007] Specifically, the mounting bracket is relatively vertically slidably arranged on the base plate, an adjusting knob is rotatably arranged on the mounting bracket, and a threaded rod portion of the adjusting knob penetrates the limiting rib and is threadedly connected to the limiting rib.

[0008] Specifically, it also includes a first L-shaped plate arranged adjacent to the substrate, wherein one inner side surface of the first L-shaped plate is flush with the upper surface of the main body plate so that the printed cardboard passes through this side surface, and a first driving roller is rotatably installed on the other side of the first L-shaped plate, and the first driving roller is used to transport the cardboard to be inspected to the position of the substrate.

[0009] Specifically, it also includes a driving unit and a second L-shaped plate arranged adjacent to the base plate, wherein one inner side surface of the second L-shaped plate is flush with the upper surface of the main body plate so that the printed paperboard can pass through this side surface, and a second driving roller is rotatably installed on the other side of the second L-shaped plate, and the second driving roller is used to continue to convey the paperboard removed from the base plate forward, and the driving unit is respectively connected to the first driving roller and the second driving roller in transmission, and the driving unit is used to control the linear velocity at the outer diameter of the second driving roller to be greater than the linear velocity at the outer diameter of the first driving roller.

[0010] Specifically, the outer surfaces of the first driving roller and the second driving roller are both provided with elastic layers.

[0011] Specifically, the spacing between the second drive roller and the second L-shaped plate and the spacing between the first drive roller and the first L-shaped plate satisfy that the elastic force of the second drive roller surface elastic layer on the second L-shaped plate is greater than the elastic force of the first drive roller surface elastic layer on the first L-shaped plate.

[0012] Specifically, the bottom surfaces of the first driving roller and the second driving roller are at the same height, and the friction coefficient of the elastic layer on the surface of the second driving roller is greater than the friction coefficient of the elastic layer on the surface of the first driving roller.

[0013] Specifically, a main air chamber is provided inside the main body plate, adsorption holes are arranged in a rectangular array on the upper surface of the main body plate and are all connected to the main air chamber, and the main air chamber is connected to the vacuum generator through an adsorption tube.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model provides a gap for paperboard to pass through by setting a base plate and a mounting bracket, and uses an ultrasonic glue amount detection device to send detection ultrasound to the passing paperboard and analyze the reflected ultrasound, thereby realizing a rapid detection of the amount of glue on the surface of the paperboard. In addition, the device also provides corresponding adsorption holes on the main plate for adsorbing the paperboard or paper pieces passing through, thereby preventing poor detection caused by bending of the paper pieces during transmission, and improving the detection accuracy of the device, thereby improving the control accuracy of ink regulation;

[0016] 2. The utility model provides two driving roller structures on both sides of the base plate to straighten and transport the cardboard passing through the base plate, thereby preventing the transmission of the cardboard from being affected by the adsorption force. In addition, the straightening action can further reduce the impact of the bending of the cardboard on the detection effect, thereby improving the reliability of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of a device for detecting the amount of glue used and thickness of paperboard provided by an embodiment of the utility model;

[0018] Figure 2 It is a front view of a device for detecting the amount of glue used on paperboard provided by an embodiment of the utility model;

[0019] Figure 3 It is a side view of a device for detecting the amount of glue used and thickness of paperboard provided by an embodiment of the utility model;

[0020] Figure 4 This utility model Figure 3 A cross-sectional view of the device for detecting the amount of glue used and thickness of paperboard provided in the embodiment, taken along the AA direction;

[0021] Figure 5 This utility model Figure 3 A cross-sectional view of the device for detecting the amount of glue used and thickness of paperboard provided in the embodiment, taken along the BB direction;

[0022] Figure numerals: 1, substrate; 101, main body plate; 102, limit rib; 2, mounting bracket; 3, ultrasonic glue quantity detection device; 4, adjustment knob; 5, first L-shaped plate; 6, first driving roller; 7, second L-shaped plate; 8, second driving roller; 9, elastic layer; 10, adsorption tube. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0026] The present invention provides a device for detecting the thickness of glue used on paperboard, which is used to quickly detect the thickness of glue used during paperboard printing, so that the ink supply mechanism at the front end can adjust the ink output according to the actual situation. To realize the structural function of the device, the device includes a substrate 1. Specifically, refer to Figure 1 As shown, the substrate 1 includes a main body plate 101 and limiting retaining edges 102 arranged on both sides of the main body plate 101, and a mounting bracket 2 is arranged on the main body plate 101, wherein a gap is reserved between the mounting bracket 2 and the substrate 1 for the paperboard to pass through the gap, and an ultrasonic glue amount detection device 3 is installed on the mounting bracket 2, wherein the ultrasonic glue amount detection device 3 at least includes a transmitter, a receiver and a corresponding control unit, etc., the transmitter is used to transmit ultrasonic waves, and the receiver is used to receive ultrasonic waves returned from the paperboard in succession, the propagation path of the ultrasonic wave is a V-shaped structure, and the control unit is used to analyze the returned sound waves Signal, no more details are given; in order to prevent the cardboard from warping and fluctuating during continuous transportation, which may cause the ultrasonic glue quantity detection device 3 to be unable to measure stably, an adsorption hole is opened on the main plate 101, and the ultrasonic transmitter and ultrasonic receiver of the ultrasonic glue quantity detection device 3 are set to point to the position of the adsorption hole on the main plate 101. At this time, when the cardboard passes through the adsorption holes on the mounting bracket 2 and the main plate 101, the cardboard can be stably conveyed forward in a manner of fitting the main plate 101, which is conducive to ensuring the stability of the cardboard and reducing the probability of warping, thereby ensuring the reliability of the detection of the ultrasonic glue quantity detection device 3.

[0027] The present invention provides a device for detecting the thickness of glue used on paperboard. Figure 4 and Figure 5 As shown, in order to facilitate the adjustment of the height between the ultrasonic glue quantity detection device 3 and the top surface of the paperboard according to the actual thickness of the printed paperboard, the mounting bracket 2 is relatively vertically slidably set on the base plate 1, and an adjusting knob 4 is rotatably set on the mounting bracket 2. The threaded rod part of the adjusting knob 4 passes through the limit retaining edge 102 and is threadedly connected with the limit retaining edge 102. When adjustment is needed, the relative height between the base plate 1 and the mounting bracket 2 can be directly adjusted by adjusting the knob 4.

[0028] The present invention provides a device for detecting the thickness of glue used on paperboard. In order to prevent the paperboard from being unable to be stably transported forward due to excessive adsorption during transportation, the device further includes a first L-shaped plate 5 disposed adjacent to the base plate 1. Figure 1 As shown, specifically, one inner side surface of the first L-shaped plate 5 is flush with the upper surface of the main body plate 101, so that the printed cardboard passes through this side surface. The first driving roller 6 is rotatably installed on the other side of the first L-shaped plate 5. The first driving roller 6 is used to transport the cardboard to be detected to the position of the substrate 1. At this time, when the cardboard is subjected to a large adsorption force and cannot continue to move forward, the first driving roller 6 rotates to push the cardboard forward, which is conducive to the cardboard passing smoothly through the position of the adsorption hole on the main body plate 101.

[0029] The present invention provides a device for detecting the thickness of glue used on paperboard, as a replacement or supplement to the above-mentioned method, wherein the device may further include a second L-shaped plate 7 arranged adjacent to the substrate 1, one inner side surface of the second L-shaped plate 7 being flush with the upper surface of the main body plate 101, and referring to the arrangement of the first L-shaped plate 5, so that the printed paperboard passes through this side surface, and a second driving roller 8 is rotatably mounted on the other side of the second L-shaped plate 7, and the second driving roller 8 is used to continue to convey the paperboard removed from the substrate 1 forward; considering that the first driving roller 6 and the second driving roller 8 may act on one paperboard at the same time, in order to prevent the paperboard from warping due to asynchronous driving, a driving unit may be arranged to be respectively connected to the first driving roller 6 and the second driving roller 8 in transmission, wherein the driving unit is used to control the linear velocity at the outer diameter of the second driving roller 8 to be greater than the linear velocity at the outer diameter of the first driving roller 6, and through such an arrangement, the speed difference between the second driving roller 8 and the first driving roller 6 will cause the paperboard to be straightened, thereby being more conducive to the ink layer on the paperboard being effectively detected by ultrasonic detection.

[0030] The embodiment of the utility model provides a device for detecting the thickness of glue used on cardboard. In order to facilitate the first driving roller 6 and the second driving roller 8 to grasp the cardboard, an elastic layer 9 is provided on the outer surface of the first driving roller 6 and the second driving roller 8. The cardboard can be effectively grasped and conveyed through the squeezing contact of the elastic layer 9.

[0031] The embodiment of the utility model provides a device for detecting the thickness of glue used on cardboard. In order to ensure that the front end of the cardboard has a stable or sufficiently reliable pulling force in the conveying direction, when the elastic layer 9 is made of the same material, the setting spacing between the second driving roller 8 and the second L-shaped plate 7 and the setting spacing between the first driving roller 6 and the first L-shaped plate 5 are set to meet the requirement that the elastic force of the elastic layer 9 on the surface of the second driving roller 8 on the second L-shaped plate 7 is greater than the elastic force of the elastic layer 9 on the surface of the first driving roller 6 on the first L-shaped plate 5. By enhancing the elastic force of the elastic layer 9 in the conveying direction of the front end, the gripping friction force of the front end is increased, that is, the traction force on the cardboard is increased, that is, the stable pulling and conveying of the front end is controlled, and the cardboard at the rear end is easy to slide relative to the elastic layer 9 on the surface of the first driving roller 6, thereby realizing the straightening and conveying process of the cardboard.

[0032] The embodiment of the utility model provides a device for detecting the thickness of glue used on cardboard, as another solution of the above-mentioned straightening solution, which can set the bottom height positions of the first driving roller 6 and the second driving roller 8 to be the same. At this time, the friction coefficient of the elastic layer 9 on the surface of the second driving roller 8 can be controlled to be greater than the friction coefficient of the elastic layer 9 on the surface of the first driving roller 6. The friction force is increased by increasing the friction coefficient of the front end traction, thereby causing the traction force at the front end of the cardboard to be greater than the traction force at the rear end, so that the cardboard is maintained in a straightened state during the conveying process.

[0033] The embodiment of the utility model provides a device for detecting the thickness of glue used on cardboard, which specifically provides a method for adsorbing cardboard over a large area. Specifically, a main air chamber is provided inside a main body plate 101, and adsorption holes are provided on the upper surface of the main body plate 101 in a rectangular array and are all connected to the main air chamber. The main air chamber is connected to a vacuum generator through an adsorption tube 10. When the vacuum generator is working, the negative pressure generated by the main air chamber acts on a plurality of adsorption holes arranged in the array at the same time, thereby achieving large-scale adsorption on the surface of the main body plate 101.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A device for detecting the amount of glue used in paperboard, characterized in that: The base plate (1) comprises a main body plate (101) and limit retaining edges (102) arranged on both sides of the main body plate (101); a mounting bracket (2) is arranged on the main body plate (101); and an ultrasonic glue quantity detection device (3) is installed on the mounting bracket (2); The main body plate (101) is provided with an adsorption hole, and the ultrasonic transmitter and the ultrasonic receiver of the ultrasonic glue quantity detection device (3) are both directed toward the position of the adsorption hole on the main body plate (101).

2. A cardboard glue thickness detection device according to claim 1, characterized in that: The mounting bracket (2) is relatively vertically slidably arranged on the base plate (1), and an adjusting knob (4) is rotatably arranged on the mounting bracket (2), wherein a threaded rod portion of the adjusting knob (4) penetrates the limit retaining edge (102) and is threadedly connected to the limit retaining edge (102).

3. A cardboard glue thickness detection device according to claim 1, characterized in that: It also comprises a first L-shaped plate (5) arranged adjacent to the base plate (1), wherein one inner side surface of the first L-shaped plate (5) is flush with the upper surface of the main body plate (101) so that a printed cardboard can pass through this side surface, and a first driving roller (6) is rotatably mounted on the other side of the first L-shaped plate (5), and the first driving roller (6) is used to transport the cardboard to be inspected to the position of the base plate (1).

4. A device for detecting the amount of glue used on paperboard according to claim 3, characterized in that: It also comprises a driving unit and a second L-shaped plate (7) arranged adjacent to the base plate (1), one inner side surface of the second L-shaped plate (7) being flush with the upper surface of the main body plate (101) so that the printed paperboard can pass through this side surface, a second driving roller (8) is rotatably mounted on the other side of the second L-shaped plate (7), the second driving roller (8) being used to continue to convey the paperboard removed from the base plate (1) forward, the driving unit being respectively connected to the first driving roller (6) and the second driving roller (8) in transmission, the driving unit being used to control the linear velocity at the outer diameter of the second driving roller (8) to be greater than the linear velocity at the outer diameter of the first driving roller (6).

5. A device for detecting the amount of glue used on paperboard according to claim 4, characterized in that: The outer surfaces of the first driving roller (6) and the second driving roller (8) are both provided with elastic layers (9).

6. A device for detecting the amount of glue used on paperboard according to claim 5, characterized in that: The spacing between the second driving roller (8) and the second L-shaped plate (7) and the spacing between the first driving roller (6) and the first L-shaped plate (5) satisfy the requirement that the elastic force of the elastic layer (9) on the surface of the second driving roller (8) on the second L-shaped plate (7) is greater than the elastic force of the elastic layer (9) on the surface of the first driving roller (6) on the first L-shaped plate (5).

7. A device for detecting the amount of glue used on paperboard according to claim 5, characterized in that: The bottom surfaces of the first driving roller (6) and the second driving roller (8) are at the same height, and the friction coefficient of the elastic layer (9) on the surface of the second driving roller (8) is greater than the friction coefficient of the elastic layer (9) on the surface of the first driving roller (6).

8. The device for detecting the amount of glue used on paperboard according to claim 1, characterized in that: A main air chamber is provided inside the main body plate (101), adsorption holes are arranged in a rectangular array on the upper surface of the main body plate (101) and are all connected to the main air chamber, and the main air chamber is connected to a vacuum generator via an adsorption tube (10).

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