A kind of lamination process paper break detection mechanism and laminator with the detection mechanism

Abstract

The utility model belongs to the technical field of the production of the laminated board, especially relates to a laminated board process paper break detection mechanism and laminated board machine with the detection mechanism, wherein the detection mechanism includes sliding block, the bottom of sliding block is fixed with first hinged block, the bottom of first hinged block is hinged with second hinged block, the second hinged block is provided with guide plate, the laminated board machine includes laminated board machine body, the laminated board machine body is provided with first gas inflation axle, second gas inflation axle, paper winding rod, film laminating roller assembly and pressure roller assembly, the laminated board process paper break detection mechanism and laminated board machine with the detection mechanism, through the cooperation of slide rail and sliding block, can adjust the position of paper break detection mechanism in the transverse direction of film laminating, and is suitable for different width, thickness film laminating material, adopts the detection mode of photoelectric sensor and second hinged block shielding, when paper break occurs, the second hinged block shields photoelectric detection assembly due to the disappearance of the bottom paper tension.

Description

Technical Field

[0001] This utility model belongs to the field of cladding production technology, and in particular relates to a paper breakage detection mechanism in the cladding process and a cladding machine having the detection mechanism. Background Technology

[0002] Laminating machines are commonly used equipment in industries such as printing and packaging. They bond laminating materials, such as plastic film, to sheet materials (e.g., cardboard, wood, and KT board) to protect, beautify, or enhance the function of the sheet material. They are widely used in packaging box production, decorative board processing, and advertising display board production. Their core function is to tightly bond laminating materials such as plastic film to sheet materials like cardboard, wood, and KT board using hot or cold pressing technology, thereby protecting, beautifying, or enhancing the function of the sheet material and improving the durability and aesthetics of the product.

[0003] This utility model, authorized by announcement number CN220314512U, discloses a re-slicing machine for ensuring feeding, including a re-slicing machine body and a film-coating roller assembly, a first air shaft, and a second air shaft mounted on the re-slicing machine body. The re-slicing machine body is also equipped with a motor for driving the first air shaft to rotate. A self-rotating transition roller is slidably mounted on the re-slicing machine body in the longitudinal direction between the second air shaft and the film-coating roller assembly. A first proximity switch and a second proximity switch are respectively mounted on the re-slicing machine body above and below the transition roller. The first proximity switch, the second proximity switch, and the motor are all communicatively connected to an industrial control computer. Although this invention... The new technology has the advantages of being less prone to air bubbles during lamination and being easy to replace the backing paper. However, this technical solution still has the following drawbacks: If the backing paper breaks during the first air shaft winding process, the subsequent backing paper will be conveyed to the lamination roller assembly along with the film. Moreover, when the film (along with the backing paper) is conveyed to the lamination roller assembly, the transition roller is not supported by the film and will not fall, thus avoiding contact with the second proximity switch. Both the second air shaft and the lamination roller assembly work normally, which causes the backing paper to cover the board along with the film, resulting in the failure of subsequent lamination work. This wastes film material and increases the scrap rate. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a paper breakage detection mechanism for the laminating process and a laminating machine having the detection mechanism.

[0005] The technical solution of this utility model is as follows:

[0006] On one hand, this utility model provides a paper breakage detection mechanism for the overlay process, including a paper breakage detection mechanism body, a sliding block provided on the paper breakage detection mechanism body, a first hinge block fixed to the bottom end of the sliding block, and a second hinge block hinged to the bottom end of the first hinge block; a guide plate provided on the second hinge block; and a photoelectric detection component provided on the first hinge block. When the guide plate abuts against the backing paper, the second hinge block does not block the photoelectric detection component; when the guide plate does not abut against the backing paper, the second hinge block blocks the photoelectric detection component.

[0007] Furthermore, the first hinge block and the second hinge block are provided with a locking structure that cooperates with each other, which is used to fix and hang the guide plate when the paper breakage detection mechanism is not in use.

[0008] Furthermore, the engaging structure includes a locking block disposed on the second hinge block, the locking block having arc surfaces on both sides, and the front end of the first hinge block having symmetrical clamping members, the clamping members cooperating with the locking block.

[0009] Furthermore, the clamping member includes symmetrical hollow blocks, one end of a spring is fixedly connected to the inner bottom wall of the hollow block, and the other end of the spring is fixedly connected to a ball that can extend out of the hollow block. The arc surfaces on both sides of the clamping block are adapted to the ball.

[0010] Furthermore, the two second hinge ears with different widths provided on the second hinge block are hinged to the first hinge ear provided on the first hinge block. The wider second hinge ear has a notch, and when the guide plate abuts against the bottom paper, the sensing end of the photoelectric detection component is exposed through the notch.

[0011] Furthermore, the second hinge block has an extension plate at an angle of not less than 90° to the guide plate at one end, and the first hinge block has a corresponding magnetic block.

[0012] Compared with the prior art, the beneficial effects of the technical solution of the paper breakage detection mechanism in the overlay process provided by this utility model are as follows:

[0013] (1) The detection method of photoelectric sensor and second hinge block is adopted. When the paper breaks, the force of the bottom paper disappears, causing the second hinge block to block the photoelectric detection component. The photoelectric sensor triggers the signal instantly without mechanical sliding delay, avoiding misjudgment or lag. Under normal conditions, the second hinge block does not block the photoelectric detection component.

[0014] (2) By setting a snap-fit ​​structure, the second hinge block can be fixed on the first hinge block when not in use.

[0015] On the other hand, this utility model provides a laminating machine with the aforementioned paper breakage detection mechanism, including a laminating machine body, on which a first air shaft, a second air shaft, a paper winding rod, a film coating roller assembly, and a pressure roller assembly are provided; a slide rail is provided between the first air shaft and the paper winding rod, and a paper breakage detection mechanism body is provided on the slide rail, the paper breakage detection mechanism body is fixed on a slider, and the slider is connected to the slide rail.

[0016] Furthermore, in the absence of external force, under the gravity of the guide plate, the extension plate on the rear side of the second hinge block abuts against the magnetic block, and the wide second hinge lug on the second hinge block blocks the photoelectric detection component.

[0017] Compared with the prior art, the beneficial effects of the technical solution of the cladding machine provided by this utility model are as follows:

[0018] (1) The integrated paper breakage detection mechanism enables real-time monitoring, which can immediately stop the first air shaft unwinding and pressure roller assembly when a paper breakage occurs, reducing the scrapping of boards and material waste caused by paper breakage;

[0019] (2) By cooperating with the slide rail and the sliding block, the lateral position of the paper breakage detection mechanism can be adjusted to adapt to different widths and thicknesses of film materials or different specifications of boards. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a cladding machine;

[0021] Figure 2 This is a sectional view of the cladding machine;

[0022] Figure 3 This is a schematic diagram of the paper breakage detection mechanism;

[0023] Figure 4 This is a side view of the paper breakage detection mechanism;

[0024] Figure 5 This is a sectional view of the clamping component;

[0025] In the diagram: 1. Support 1, 2. Support 2, 3. First air shaft, 4. Second air shaft, 5. Paper winding rod, 7. Upper coating roller, 8. Lower coating roller, 9. Upper pressure roller, 10. Lower pressure roller, 11. Slide rail, 12. Paper break detection mechanism body, 121. Sliding block, 122. First hinge block, 123. First hinge ear, 124. Second hinge block, 125. Second hinge ear, 126. Guide plate, 127. Cavity block, 128. Clamping ball, 1210. Clamping block, 1211. Mounting plate, 1212. Photoelectric detection component, 1213. Extension plate, 1214. Magnetic block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Example 1

[0028] like Figure 3-5 As shown, this embodiment provides a paper breakage detection mechanism for the laminating process, including a paper breakage detection mechanism body 12. The paper breakage detection mechanism body 12 includes a sliding block 121. A first hinge block 122 is fixed to the bottom end of the sliding block 121, and a second hinge block 124 is hinged to the bottom end of the first hinge block 122. A guide plate 126 is provided on the second hinge block 124. A photoelectric detection component 1212 is provided on the first hinge block 122. When the guide plate 126 abuts against the backing paper, the second hinge block 124 does not block the photoelectric detection component 1212. When the guide plate 126 does not abut against the backing paper, the second hinge block 124 blocks the photoelectric detection component 1212.

[0029] In this embodiment, the first hinge block 122 and the second hinge block 124 are provided with a locking structure that cooperates with each other, which is used to fix and hang the guide plate 126 when the paper breakage detection mechanism is not in use. The locking structure includes a locking block 1210 provided on the second hinge block 124. The locking block 1210 has arc surfaces on both sides. The front end of the first hinge block 122 is provided with symmetrical clamping members, and the clamping members cooperate with the locking block 1210.

[0030] In this embodiment, the clamping member includes a symmetrical cavity block 127. One end of a spring is fixedly connected to the inner bottom wall of the cavity block 127, and the other end of the spring is fixedly connected to a ball 128 that can extend out of the cavity block 127. The arc surfaces on both sides of the clamping block 1210 are adapted to the ball 128.

[0031] Specifically, the sliding block 121 has a rectangular parallelepiped structure and is slidably mounted on the slide rail 11, which is fixed to the covering machine. The sliding block 121 has a dovetail groove that matches the slide rail 11. The bottom end of the sliding block 121 is machined with a flat surface and has multiple bolt holes. Some of these bolt holes are used to install the first hinge block 122 with bolts, while others are used to tighten and position the sliding block 121 after it has slid along the slide rail 11 and been adjusted into place by screwing in bolts. The first hinge block 122 has an inverted U-shaped structure. The top of the horizontal section of the first hinge block 122 is flat (fitting against the bottom end of the sliding block 121) and is connected through the pre-drilled bolt holes. A mounting plate 1211 is fixed (welded or integrally formed) in the middle of the lower side of the horizontal section. The mounting plate 1211 is semi-elliptical and has mounting holes for fixing the photoelectric detection component 1212 in the middle. The front end of the first hinge block 122 has symmetrically machined flat surfaces (with pre-drilled fixing holes) for mounting clamping components.

[0032] The second hinge block 124 is made of 304 stainless steel, and the first hinge block 122 is made of carbon steel. The second hinge block 124 is in the shape of a long strip. The guide plate 126 and the second hinge block 124 are integrally formed. The guide plate 126 extends towards the bottom paper conveying path, so that the second hinge block 124 uses its hinge point with the first hinge block 122 as the fulcrum. The guide plate 126 drives the second hinge block 124 to tilt downward with the hinge point with the first hinge block 122 as the fulcrum. When its lower side passes the bottom paper, the bottom paper is stretched and abuts against the lower end of the guide plate 126, giving the guide plate 126 an upward force. This causes the guide plate 126 to drive the second hinge block 124 to rotate, thereby removing the obstruction of the photoelectric detection component 1212.

[0033] The photoelectric detection component 1212 adopts a proximity switch. The overall structure of the locking block 1210 is an inverted T-shaped block. The two straight sections of the locking block 1210 are fixed to the upper side of the second hinge block 124 by bolts. The two sides of the vertical section of the locking block 1210 are symmetrically machined with arc surfaces (the curvature of the arc surface is adapted to the locking ball 128 to ensure that the locking ball 128 can smoothly lock in and release).

[0034] The cavity block 127 is a semi-cylindrical structure with one open end, facing the locking block 1210, and the openings of the two cavity blocks 127 are opposite each other; the cavity block 127 is fixedly connected to the long strip plate, and bolt holes are reserved on the outer side of the long strip plate for connection with the first hinge block 122; one end of the spring is fixedly fitted onto the inner bottom wall of the cavity block 127, and the other end is fixed to the locking ball 128; the locking ball 128 is spherical, and its diameter is smaller than the opening diameter of the cavity block 127 (ensuring that the locking ball 128 can partially extend out of the cavity and will not fall out of the opening); when the paper breakage detection mechanism is not needed, the locking block 1210 is moved closer to the cavity block 127 by rotating the guide plate 126 upward. When the locking block 1210 reaches between the two cavity blocks 127, the locking block 1210 pushes the locking ball 128 extending from the two cavity blocks 127 to retract (this... When the spring is compressed, when the arc surface of the locking block 1210 reaches between the two locking balls 128, the two locking balls 128 are ejected by the spring and pressed against both sides of the locking block 1210, thereby fixing the second hinge block 124. When the paper breakage detection mechanism is needed, simply pull the guide plate 126 outward. Since the locking balls 128 are supported and fixed by the elastic force provided by the spring in the cavity block 127, and the side of the locking block 1210 is an arc surface, when the guide plate 126 moves outward, as the thickness of the locking block 1210 increases with the change of the arc surface, it will push the locking balls 128 back into the cavity block 127, eventually losing the restraint on the locking block 1210. After the guide plate 126 is released, under the action of the gravity of the guide plate 126, the guide plate 126 rotates with the second hinge block 124.

[0035] like Figure 3 and Figure 4 As shown, two second hinge ears 125 of different widths are provided on the second hinge block 124 and are hinged to the first hinge ear 123 provided on the first hinge block 122. The wider second hinge ear 125 has a notch. When the guide plate 126 and When the paper is cut, the sensing end of the photoelectric detection component 1212 is exposed through the notch; after the paper is cut, under the gravity of the guide plate 126, the second hinge block 124 rotates, and the wide second hinge ear 125 blocks the sensing end of the photoelectric detection component 1212; the two second hinge ears 125 are integrally formed at both ends of the second hinge block 124 and extend upward, and the two second hinge ears 125 are respectively pivotally hinged to the two first hinge ears 123.

[0036] like Figure 4As shown, the second hinge block 124 has an extension plate 1213 at an angle of not less than 90° to the guide plate 126 at one end facing away from it, and the first hinge block 122 is provided with a magnetic block 1214. When there is no external force, under the gravity of the guide plate 126, the magnetic block 1214 is attracted to the extension plate on the rear side of the second hinge block 124, and the wide second hinge ear 125 on the second hinge block 124 blocks the photoelectric detection component 1212.

[0037] Specifically, the extension plate 1213 includes a vertical plate fixedly connected to the second hinge block 124 and an abutment plate inclinedly disposed at the upper end of the vertical plate. The abutment plate is parallel to the rear side of the first hinge block 122, ensuring that when the second hinge block 124 rotates around the pin, the movement trajectory of the extension plate 1213 can accurately point to the magnetic block 1214. The magnetic block 1214 is fixed to the corresponding side of the first hinge block 122 (near the rotation trajectory of the second hinge block 124) by bolts. When the second hinge block 124 hangs down naturally under the gravity of the guide plate 126, the end face of the extension plate 1213 can just abut against the flat surface of the magnetic block 1214 and be attracted.

[0038] In the absence of external force (paper breakage), the guide plate 126 pulls the second hinge block 124 downward under its own gravity, causing the second hinge block 124 to rotate around the pivot axis toward the magnetic block 1214. As the extension plate 1213 rotates, it gradually approaches the magnetic block 1214, until its end face contacts the magnetic block 1214 and is magnetically attracted and fixed. At this time, the second hinge block 124 is stable, and its wide second hinge ear 125 blocks the sensing end of the photoelectric detection component 1212, completely blocking the detection light. The photoelectric component outputs a paper breakage signal. The magnetic strength of the magnetic block 1214 is set to be able to stably attract the extension plate 1213, and the tension of the backing paper during the lamination process can easily overcome the magnetic force. The magnetic force setting ensures that the extension plate can be stably attracted to the magnetic block 1214 when the paper breaks, preventing the guide plate from rebounding. At the same time, it avoids that the magnetic force is too large, affecting the trigger sensitivity during normal lamination, or too small, causing unstable attraction.

[0039] When there is an external force (the backing paper on the laminate is normally tensioned): When the backing paper is normally fed and tensioned, the backing paper applies a supporting force to the guide plate 126 along the feeding direction. This supporting force is transmitted to the second hinge block 124, driving the second hinge block 124 to rotate around the pivot axis away from the magnetic block 1214. When the paper breaks, the extension plate 1213 is attracted and fixed to the magnetic block 1214. The equipment stops in this state. The guide plate 126 needs to be manually reset to the surface of the backing paper and the equipment needs to be started. At this time, the extension plate 1213 is disengaged from the magnetic block 1214.

[0040] When the bottom paper force is stable, the extension plate 1213 completely disengages from the magnetic block 1214, and the second hinge block 124 is fixed by the bottom paper force. At this time, the wide second hinge ear 125 rotates with the second hinge block 124 and disengages from the light path of the photoelectric detection component 1212. The photoelectric component stops outputting the "paper break signal" and determines that the lamination is normal.

[0041] Example 2

[0042] like Figure 1-2 As shown, this embodiment provides a laminating machine with the detection mechanism, including a laminating machine body. The laminating machine body is provided with a first air shaft 3, a second air shaft 4, a paper winding rod 5, a laminating roller assembly, and a pressure roller assembly. A slide rail 11 is provided between the first air shaft 3 and the paper winding rod 5. A paper breakage detection mechanism body 12 is provided on the slide rail 11. The sliding block 121 of the paper breakage detection mechanism body 12 is slidably connected to the slide rail 11. The sliding block 121 is assembled on the slide rail 11 of the laminating machine body (the slide rail 11 is preset between the first air shaft 3 and the paper winding rod 5) and can move along the length of the slide rail 11. The sliding block 121 slides freely, driving the entire detection mechanism to adjust its lateral position. The side of the sliding block 121 has a threaded hole with a built-in locking bolt. Tightening the locking bolt allows the bolt end to abut against the inner wall of the slide rail 11, thereby locking the position of the sliding block 121. It does not require recalibration after adapting to different widths of film. The film coating machine also includes a support frame, which consists of a support frame 1 and a support frame 2. The middle of the support frame 1 and the support frame 2 are connected by a worktable. The film coating roller assembly includes an upper film coating roller 7 and a lower film coating roller 8. The pressure roller assembly includes an upper pressure roller 9 and a lower pressure roller 10. A transition roller is provided between the paper winding rod 5 and the upper film coating roller 7.

[0043] Specifically, the laminating roll is fixedly installed on the second air shaft 4, ensuring that the second air shaft 4 tightly clamps the roll core after inflation; the free end of the laminating roll is pulled out, first passing around the right side of the paper winding rod 5 (to avoid displacement by adhering to the rod surface), and then guided to the left side of the transition roller between the second air shaft 4 and the laminating roller assembly; then the bottom paper is separated from the film, the film is guided between the upper laminating roller 7 and the lower laminating roller 8 to cover the board, and the bottom paper is wound around the first air shaft 3 around the bottom of the guide plate 126 of the paper breakage detection mechanism. Since the bottom paper is tensioned when the first air shaft 3 winds up the bottom paper, the guide plate 126 rotates to the right (the extension plate 1213 disengages from the magnetic block 1214, and the second hinge block 124 does not block the photoelectric detection component 1212); at this time, the sensing end of the photoelectric detection component 1212 is exposed through the notch and does not send a "paper breakage" signal to the laminating machine control unit, and the equipment determines that the laminating is being conveyed normally.

[0044] When the bottom paper breaks during the process of being conveyed to the first air shaft 3 (or when the bottom paper is used up), the tension disappears, and the second hinge block 124 rotates counterclockwise around the pivot under its own gravity. As the second hinge block 124 rotates, the wide second hinge ear 125 blocks the light path of the photoelectric detection component 1212 and sends a "paper break signal" to the control unit. The covering machine body then stops the first air shaft unwinding and the pressure roller assembly, triggering the equipment to stop and alarm.

[0045] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paper breakage detection mechanism for a laminating process, comprising a paper breakage detection mechanism body (12), wherein a sliding block (121) is provided on the paper breakage detection mechanism body (12), characterized in that: The bottom end of the sliding block (121) is fixed with a first hinge block (122), and the bottom end of the first hinge block (122) is hinged with a second hinge block (124); a guide plate (126) is provided on the second hinge block (124); a photoelectric detection component (1212) is provided on the first hinge block (122). When the guide plate (126) abuts against the backing paper, the second hinge block (124) does not block the photoelectric detection component (1212). When the guide plate (126) does not abut against the backing paper, the second hinge block (124) blocks the photoelectric detection component (1212).

2. The paper breakage detection mechanism in the overlay process according to claim 1, characterized in that: The first hinge block (122) and the second hinge block (124) are provided with a locking structure that cooperates with each other, which is used to fix and hang the guide plate (126) by locking structure when the paper breakage detection mechanism is not in use.

3. The paper breakage detection mechanism in the overlay process according to claim 2, characterized in that: The engaging structure includes a locking block (1210) disposed on the second hinge block (124). The locking block (1210) has arc surfaces on both sides. The front end of the first hinge block (122) is provided with symmetrical clamping members, which cooperate with the locking block (1210).

4. The paper breakage detection mechanism in the overlay process according to claim 3, characterized in that: The clamping component includes a cavity block (127), one end of a spring is fixedly connected to the inner bottom wall of the cavity block (127), and the other end of the spring is fixedly connected to a ball (128) that can extend out of the cavity block (127). The arc surfaces on both sides of the clamping block (1210) are adapted to the ball (128).

5. The paper breakage detection mechanism in the overlay process according to claim 1, characterized in that: Two second hinge ears (125) with different widths are provided on the second hinge block (124) and hinged to the first hinge ear (123) provided on the first hinge block (122). The second hinge ear (125) with a larger width has a notch. When the guide plate (126) touches the bottom paper, the sensing end of the photoelectric detection component (1212) is exposed through the notch.

6. The paper breakage detection mechanism in the overlay process according to claim 1, characterized in that: The second hinge block (124) has an extension plate (1213) at an angle of not less than 90° to the guide plate (126) at one end, and the first hinge block (122) has a corresponding magnetic block (1214).

7. A laminating machine having a paper break detection mechanism as described in any one of claims 1-6, characterized in that: The machine includes a laminating machine body, on which a first air shaft (3), a second air shaft (4), a paper winding rod (5), a laminating roller assembly, and a pressing roller assembly are provided; a slide rail (11) is provided between the first air shaft (3) and the paper winding rod (5), and a paper breakage detection mechanism body (12) is provided on the slide rail (11), and the sliding block (121) of the paper breakage detection mechanism body (12) is slidably connected to the slide rail (11).

8. The laminating machine with a paper breakage detection mechanism according to claim 7, characterized in that: Without external force, under the gravity of the guide plate (126), the extension plate (1213) on the rear side of the second hinge block (124) is attracted to the magnetic block (1214), and the wide second hinge ear (125) on the second hinge block (124) blocks the photoelectric detection component (1212).

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