Gluing device for LVL production
By designing an adjustable glue-spraying device, the problem of the limited applicability of glue-spraying devices in the spray coating method was solved, achieving the effects of efficient glue application and resource conservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-21
AI Technical Summary
Existing coating equipment for LVL (Laminated Veneer Liner) cannot adjust the curtain width, which limits its applicability. Multiple units need to be purchased to accommodate different sizes of LVL panels, resulting in a waste of resources.
Design an adjustable glue coating device, which can be opened or closed by pressing a button. Combining roller coating and spray coating methods, it is suitable for applying glue to LVL veneers of different sizes.
It enables efficient gluing of LVL veneers of different sizes, avoiding glue waste and reducing production costs.
Smart Images
Figure CN224144920U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LVL processing equipment technology, and in particular to an adhesive coating device for LVL production. Background Technology
[0002] Laminated Veneer Lumber (LVL) is an engineered wood product made by gluing together multiple layers of thin wood veneers. It is widely used in construction, furniture, and structural materials. In its production, gluing is one of the core processes, directly affecting the product's strength, durability, and environmental performance. Existing gluing methods include roller coating, spraying, and curtain coating. Roller coating is the most commonly used, applying glue evenly to the veneer surface using a roller, resulting in uniform application and high efficiency. Spraying is suitable for complex shapes or high-precision applications, but it has low glue utilization and requires handling of atomization pollution. Curtain coating applies glue to the veneer surface through nozzles, resulting in higher glue utilization. In existing technologies, when using the spray coating method, the specific width of the curtain cannot be adjusted, and it can only be spray coated on LVL panels of a single size, which limits its applicability and the production line. When it is necessary to apply glue to LVL panels of different sizes, it is necessary to spend additional money to purchase corresponding glue application equipment, which increases economic expenditure and causes waste of resources. Utility Model Content
[0003] This invention addresses the technical problem that the specific width of the curtain cannot be adjusted during spray coating, thus limiting its applicability. It provides an LVL production coating device with an adjustable coating device.
[0004] To solve the above technical problems, this utility model provides a glue coating device for LVL production, including a conveyor belt and a glue coating cover. Each side of the conveyor belt is provided with a support side plate, and the glue coating cover is fixedly connected to the support side plate. Each support side plate is fixedly connected to a support foot at both ends.
[0005] The glue coating chamber is equipped with a glue storage tank and a glue coating roller. The glue storage tank is fixedly connected to the top of the glue coating chamber. At least one row of adjustable glue coating devices is evenly arranged on one side of the bottom of the glue storage tank. The number of adjustable glue coating devices is not less than 3. Each adjustable glue coating device is connected to the interior of the glue storage tank. The bottom of each adjustable glue coating device is conical. The top of each adjustable glue coating device is provided with a through hole. The interior of the adjustable glue coating device is provided with an adjusting rod and a rubber plug to ensure that the adjusting rod is fixedly connected to the rubber plug after passing through the through hole.
[0006] Preferably, in the above technical solution, a second spring is provided at the top of the adjusting rod, a button is fixedly connected to the top of the adjusting rod, one end of the second spring is fixedly connected to the bottom of the button, and the other end is fixedly connected to the top of the adjustable glue applicator.
[0007] Preferably, in the above technical solution, the adjustable glue-spraying device is provided with at least two axially symmetrically arranged fixed connecting rods, and a fixed ring is also provided in the center of the adjustable glue-spraying device. One end of each fixed connecting rod is fixedly connected to the fixed ring, and the other end is fixedly connected to the inner wall of the adjustable glue-spraying device.
[0008] Preferably, in the above technical solution, each side of the conical bottom of the adjustable glue-applying device is provided with an adjustable limiting device and a rectangular through hole. The adjustable limiting device includes a support portion arranged perpendicular to the conical curved surface. The support portion is fixedly connected to the adjustable glue-applying device. The top of the support portion is provided with a first movable shaft, and a rotating rod is provided on the first movable shaft to ensure that the rotating rod can rotate on the support portion.
[0009] Preferably, in the above technical solution, one end of the rotating rod is provided with a second movable shaft, and the other end is provided with a telescopic sleeve. A limiting rod is provided on the second movable shaft. The size of the limiting rod matches the size of the rectangular through hole to ensure that the limiting rod can extend out of the rectangular through hole and slide inside it. The part of the limiting rod that can pass through the rectangular through hole has an arc surface at its upper part.
[0010] Preferably, in the above technical solution, one end of the telescopic sleeve is fixedly connected to the rotating rod, and the other end is fixedly connected to the adjustable glue-applying device, and a third spring is sleeved on the outer periphery of the telescopic sleeve.
[0011] Preferably, in the above technical solution, each end of the coating roller is provided with a bearing fixing component, and the top of each bearing fixing component is fixedly connected to a movable sleeve shaft. A hollow sleeve is sleeved on the top of the movable sleeve shaft, and a first spring is provided inside the hollow sleeve shaft. One end of the first spring is fixedly connected to the movable sleeve shaft.
[0012] Preferably, in the above technical solution, the top of the hollow sleeve is fixedly connected to a connecting part, and the connecting part is fixedly connected to the glue-coated cover.
[0013] Preferably, in the above technical solution, the rubber plug is conical, and the size of the rubber plug matches the size of the conical bottom of the adjustable glue-spraying device, so as to ensure that the rubber plug can seal the adjustable glue-spraying device.
[0014] Compared with existing technologies, this invention has the following advantages: By pressing the button of the adjustable glue coating device, the opening or closing state of each adjustable glue coating device can be controlled individually, allowing the width of the glue coating curtain to be adjusted according to the specific size of the LVL veneer, making it suitable for coating LVL veneers of more different sizes. Combining roller coating and curtain coating methods enables high-efficiency glue coating without excessive glue waste. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of an adhesive coating device for LVL production according to the present invention;
[0016] Figure 2 This is a side view of the overall structure of an adhesive coating device for LVL production according to this utility model;
[0017] Figure 3 This is a schematic diagram of the adjustable glue-spraying device in the closed state of an LVL production glue-spraying device according to this utility model;
[0018] Figure 4 This is a schematic diagram of the adjustable coating device in the LVL production coating device of this utility model when it is in the open state;
[0019] Figure 5 for Figure 3 A partial enlarged view of the adjusting rod and the adjustable limit device;
[0020] Figure 6 for Figure 3 A partial enlarged view of the adjustable glue-applying device and adjusting rod;
[0021] Figure 7 This is a schematic diagram showing the connection relationship between the coating roller and the connecting part in a coating device for LVL production according to this utility model.
[0022] Explanation of key figure labels:
[0023] 1-Conveyor belt, 2-Supporting foot, 3-Glue roller, 4-Glue storage bin, 5-Adjustable glue application device, 11-Supporting side plate, 12-Glue application cover, 13-Connecting part, 31-Bearing fixing part, 32-Hollow sleeve, 33-Modible sleeve shaft, 35-First spring, 51-Adjusting rod, 52-Second spring, 53-Button, 54-Fixed connecting rod, 55-Fixed ring, 56-Rubber plug, 57-Adjustable limiting device, 58-Rectangular through hole, 59-Through hole, 571-Supporting part, 572-First movable shaft, 573-Rotating rod, 574-Limiting rod, 575-Second movable shaft, 576-Telescopic sleeve, 577-Third spring. Detailed Implementation
[0024] 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 some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] like Figures 1-7As shown, the present invention discloses an adhesive coating device for LVL production, comprising a conveyor belt 1 and an adhesive coating cover 12. Each side of the conveyor belt 1 is provided with a support side plate 11, and the adhesive coating cover 12 is fixedly connected to the support side plate 11. Each support side plate 11 is fixedly connected to a support foot 2 at both ends below. The glue coating cover 12 is equipped with a glue storage tank 4 and a glue application roller 3. The glue storage tank 4 is fixedly connected to the top of the glue coating cover 12. At least one row of adjustable glue application devices 5 is evenly arranged on one side of the bottom of the glue storage tank 4. The number of adjustable glue application devices 5 is not less than 3, and each adjustable glue application device 5 is connected to the interior of the glue storage tank 4. The bottom of each adjustable glue application device 5 is conical. In this embodiment, the number of adjustable glue application devices 5 is 33. To prevent the glue coating curtain from having excessively large spacing or breaking, the spacing of the adjustable glue application devices 5 should be controlled between 0.5 and 1.5 cm. The number of adjustable glue application devices 5 can also be adjusted according to specific production needs, as long as it can meet the glue application work of most sizes of LVL single boards. The top of the adjustable glue application device 5 is provided with a through hole 59. The interior of the adjustable glue application device 5 is provided with an adjusting rod 51 and a rubber stopper 56 to ensure that the adjusting rod 51 is fixedly connected to the rubber stopper 56 after passing through the through hole 59. The top end of the adjusting rod 51 is provided with a second spring 52, and a button 53 is fixedly connected to the top end of the adjusting rod 51. One end of the second spring 52 is fixedly connected to the bottom of the button 53, and the other end is fixedly connected to the top of the adjustable glue-applying device 5. The adjustable glue-applying device 5 is provided with at least two axially symmetrically arranged fixed connecting rods 54. A fixing ring 55 is also provided in the center of the adjustable glue-applying device 5. One end of each fixed connecting rod 54 is fixedly connected to the fixing ring 55, and the other end is fixedly connected to the inner wall of the adjustable glue-applying device 5. The fixing ring 55 can ensure that the adjusting rod 51 and the rubber stopper 56 are always in the center of the adjustable glue-applying device 5 when moving vertically, preventing the adjusting rod 51 and the rubber stopper 56 from shifting and affecting the sealing effect of the adjustable glue-applying device 5. The adjustable glue-applying device 5 has an adjustable limiting device 57 and a rectangular through hole 58 on each side of its conical bottom. The adjustable limiting device 57 includes a support part 571 that is perpendicular to the conical curved surface. The support part 571 is fixedly connected to the adjustable glue-applying device 5. The top of the support part 571 is provided with a first movable shaft 572. The first movable shaft 572 is provided with a rotating rod 573 to ensure that the rotating rod 573 can rotate on the support part 571.One end of the rotating rod 573 is provided with a second movable shaft 575, and the other end is provided with a telescopic sleeve 576. A limiting rod 574 is provided on the second movable shaft 575. The size of the limiting rod 574 matches the size of the rectangular through hole 58 to ensure that the limiting rod 574 can extend out of the rectangular through hole 58 and slide inside it. The portion of the limiting rod 574 that can pass through the rectangular through hole 58 has an arc surface at its upper part, which facilitates the outward compression of the limiting rods 574 on both sides when the rubber stopper 56 moves downward. One end of the telescopic sleeve 576 is fixedly connected to the rotating rod 573, and the other end is fixedly connected to the adjustable glue-applying device 5. A third spring 577 is fitted around the outer periphery of the telescopic sleeve 576. The rubber stopper 56 is conical, and its size matches the size of the conical bottom of the adjustable glue-applying device 5 to ensure that the rubber stopper 56 can seal the adjustable glue-applying device 5. During operation, pressing down button 53 causes adjusting rod 51 and rubber stopper 56 to move downwards. Rubber stopper 56 contacts the arc-shaped limiting rod 574, thereby squeezing the limiting rod 574 outwards. At this time, rotating rod 573 rotates and squeezes third spring 577. After rubber stopper 56 has completely passed the limiting rod 574, the limiting rod 574 is no longer under force. At this time, third spring 577 drives limiting rod 574 back to its original position. The lower surface of limiting rod 574 contacts rubber stopper 56, restricting the vertical movement of rubber stopper 56. Adjustable glue applicator 5 is in a blocking state. When it is necessary to restore the adjustable glue applicator 5 to the open state, the operator needs to squeeze the end of the rotating rod 573 near the third spring 577. By leveraging the principle, the limiting rod 574 is pulled outward as the rotating rod 573 rotates. At this time, the second spring 52 drives the adjusting rod 51 and the rubber stopper 56 to move upward under the action of the elastic force, so as to get rid of the limitation of the limiting rod 574 and return to the original position, thus putting the adjustable glue applicator 5 into the open state.
[0026] In this embodiment, each end of the coating roller 3 is provided with a bearing fixing member 31. A movable sleeve shaft 33 is fixedly connected to the top of each bearing fixing member 31. A hollow sleeve 32 is fitted onto the top of the movable sleeve shaft 33. A first spring 35 is provided inside the hollow sleeve 32, and one end of the first spring 35 is fixedly connected to the movable sleeve shaft 33. A connecting part 13 is fixedly connected to the top of the hollow sleeve 32, and the connecting part 13 is fixedly connected to the glue coating cover 12. The springs in the hollow sleeves 32 on both sides of the coating roller 3 ensure stable contact between the coating roller and the LVL veneer, making it suitable for LVL veneers of different thicknesses and ensuring uniform glue application.
[0027] This invention features an adjustable glue-applying device. By pressing a button, the opening and closing status of each adjustable glue-applying device can be individually controlled. Before applying glue, the width of the glue-applying curtain can be adjusted according to the specific dimensions of the LVL veneer. This makes the glue-applying device suitable for applying glue to LVL veneers of various sizes, avoiding unnecessary production costs. Combining roller coating and curtain coating methods enables highly efficient glue application without excessive glue waste, improving economic efficiency.
[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A coating device for LVL production, characterized in that: It includes a conveyor belt (1) and a glue coating cover (12). Each side of the conveyor belt (1) is provided with a support side plate (11). The glue coating cover (12) is fixedly connected to the support side plate (11). Each support side plate (11) has a support foot (2) fixedly connected to the bottom of both ends. The glue coating cover (12) is provided with a glue storage tank (4) and a glue coating roller (3). The glue storage tank (4) is fixedly connected to the top of the glue coating cover (12). At least one row of adjustable glue coating devices (5) is evenly provided on one side of the bottom of the glue storage tank (4). The number of adjustable glue coating devices (5) is not less than 3. Each adjustable glue coating device (5) is connected to the inside of the glue storage tank (4). The bottom of each adjustable glue coating device (5) is conical. The top of the adjustable glue coating device (5) is provided with a through hole (59). The inside of the adjustable glue coating device (5) is provided with an adjusting rod (51) and a rubber plug (56) to ensure that the adjusting rod (51) is fixedly connected to the rubber plug (56) after passing through the through hole (59).
2. The gluing device for LVL production according to claim 1, characterized in that: The top end of the adjusting rod (51) is provided with a second spring (52), and a button (53) is fixedly connected to the top end of the adjusting rod (51). One end of the second spring (52) is fixedly connected to the bottom of the button (53), and the other end is fixedly connected to the top of the adjustable glue applicator (5).
3. The gluing device for LVL production according to claim 2, characterized in that: The adjustable glue applicator (5) is provided with at least two axially symmetrically arranged fixed connecting rods (54). A fixed ring (55) is also provided in the center of the adjustable glue applicator (5). One end of each fixed connecting rod (54) is fixedly connected to the fixed ring (55), and the other end is fixedly connected to the inner wall of the adjustable glue applicator (5).
4. The gluing device for LVL production according to claim 3, characterized in that: The adjustable glue-applying device (5) has an adjustable limiting device (57) and a rectangular through hole (58) on each side of its conical bottom. The adjustable limiting device (57) includes a support part (571) that is perpendicular to the conical curved surface. The support part (571) is fixedly connected to the adjustable glue-applying device (5). The top of the support part (571) is provided with a first movable shaft (572). A rotating rod (573) is provided on the first movable shaft (572) to ensure that the rotating rod (573) can rotate on the support part (571).
5. The gluing device for LVL production according to claim 4, characterized in that: One end of the rotating rod (573) is provided with a second movable shaft (575), and the other end is provided with a telescopic sleeve (576). The second movable shaft (575) is provided with a limiting rod (574). The size of the limiting rod (574) matches the size of the rectangular through hole (58) to ensure that the limiting rod (574) can extend out of the rectangular through hole (58) and slide inside it. The portion of the limiting rod (574) that can pass through the rectangular through hole (58) has an arc surface at its upper part.
6. The gluing device for LVL production according to claim 5, characterized in that: One end of the telescopic sleeve (576) is fixedly connected to the rotating rod (573), and the other end is fixedly connected to the adjustable glue applicator (5). A third spring (577) is sleeved on the outer periphery of the telescopic sleeve (576).
7. The gluing device for LVL production according to claim 1, characterized in that: Each end of the coating roller (3) is provided with a bearing fixing part (31), and a movable sleeve shaft (33) is fixedly connected to the top of each bearing fixing part (31). A hollow sleeve (32) is sleeved on the top of the movable sleeve shaft (33), and a first spring (35) is provided inside the hollow sleeve (32). One end of the first spring (35) is fixedly connected to the movable sleeve shaft (33).
8. The gluing device for LVL production according to claim 7, characterized in that: The top of the hollow sleeve (32) is fixedly connected to a connecting part (13), and the connecting part (13) is fixedly connected to the glue-coated cover (12).
9. The gluing device for LVL production according to claim 1, characterized in that: The rubber plug (56) is conical, and the size of the rubber plug (56) matches the size of the conical bottom of the adjustable glue-spraying device (5) to ensure that the rubber plug (56) can seal the adjustable glue-spraying device (5).