Gluing device

Abstract

The invention provides a rubberizing device, and relates to the technical field of rubberizing equipment, the rubberizing device comprises an unreeling mechanism, a gravity tensioning mechanism, a cutting mechanism, a rubberizing mechanism and a recovery mechanism, the unreeling mechanism is used for releasing an adhesive tape; the gravity tensioning mechanism is arranged on an adhesive tape releasing path of the unwinding mechanism and comprises a first tensioning position for triggering the unwinding mechanism to release the adhesive tape and a second tensioning position for triggering the unwinding mechanism to stop releasing the adhesive tape; the cutting mechanism is arranged at the downstream of the gravity tensioning mechanism and is used for cutting an adhesive layer of the adhesive tape; the rubberizing mechanism is arranged at the downstream of the cutting mechanism and is used for gluing the adhesive layer section by section; the recycling mechanism is used for winding release paper of the adhesive tape. Closed-loop control can be formed through the gravity tensioning mechanism and the unwinding mechanism, continuous and stable reference tension is provided, the stability and controllability of the tape supply process are ensured, and then the reliability, precision and continuity of the tape pasting process are improved.

Description

Technical Field

[0001] This invention relates to the field of adhesive application equipment technology, and particularly to an adhesive application device. Background Technology

[0002] Ambient lighting is increasingly used in modern automobiles, consumer electronics, and home furnishings. The assembly quality of its light guide glass strip directly affects the final uniformity of light emission and the aesthetics of the product. A key process in this assembly is the precise and reliable application of double-sided tape to the designated position on the light guide glass strip for fixation. Existing technologies typically employ automated equipment for this process: first, the light guide glass strip is placed on a specialized fixture and positioned flat using vacuum adsorption; then, a machine vision system is used to photograph, identify, and calculate the precise position of the glass strip; finally, a three-axis motion bonding mechanism is controlled to press the tape from the roll onto the surface of the glass strip, simultaneously peeling off the release paper during the bonding process. However, existing technologies present several significant technical challenges in practical applications. For example, after bonding a section of tape, it is typically cut using a standard steel knife. However, at the moment of cutting, the tape (especially high-adhesion tape) easily adheres to the blade due to its stickiness. When the blade retracts, it pulls on the glue strip that has been bonded but not fully compacted, along with the release paper attached to it, causing the glue strip to shift relative to the glass strip (misalignment). This directly interferes with the positioning judgment of the vision system in the next step. Alternatively, during long-side bonding operations, the tape is subjected to continuous tensile force as the bonding head moves. At the end of the bonding stroke, this tension can easily cause the last section of tape (tail) to prematurely peel off from the release paper. This uncontrolled peeling not only results in incomplete bonding of the current tape but also changes the position of the leading edge of the subsequent tape. When the camera uses a bottom-up perspective for positioning, it is highly susceptible to misjudgment due to changes in recognition features, leading to subsequent bonding actions failing to start normally or incorrect positioning, causing production interruptions. Alternatively, during the tape supply process, the tape itself has a certain degree of extensibility and may twist and deform in the conveying path, generating additional friction and resistance. This often causes the damping motor used to provide winding tension to be unable to promptly and smoothly recover excess tape. The result is that the tape is overstretched in the tape feeding mechanism, becoming loose, sagging, or even tangled, which compromises the stability and accuracy of the tape supply and makes initial positioning for the next bonding cycle extremely difficult. Therefore, improving the reliability, accuracy, and continuity of the tape application process has become an urgent technical problem to be solved. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an adhesive application device for improving the reliability, accuracy and continuity of the adhesive application process.

[0004] The above-mentioned objective of the present invention can be achieved by the following technical solution: the present invention provides an adhesive applicator, comprising: An unwinding mechanism for releasing the tape; A gravity tensioning mechanism is disposed on the tape release path of the unwinding mechanism. The gravity tensioning mechanism includes a first tensioning position for triggering the unwinding mechanism to release the tape and a second tensioning position for triggering the unwinding mechanism to stop releasing the tape. A cutting mechanism is provided downstream of the gravity tensioning mechanism and is used to cut the adhesive layer of the tape. An adhesive application mechanism is located downstream of the cutting mechanism and is used to apply the adhesive layer segment by segment. A recycling mechanism for winding up the release paper of the tape.

[0005] In a preferred embodiment of the present invention, the unwinding mechanism includes a tray for receiving the tape and a first drive motor for driving the tray to rotate.

[0006] In a preferred embodiment of the present invention, the gravity tensioning mechanism includes a tensioning wheel for abutting the tape, a gravity pendulum for driving the tensioning wheel, and a position detection module for detecting the position of the gravity pendulum, wherein the position detection module is electrically connected to the first drive motor. When the gravity pendulum moves to the first tension position, the position detection module can control the first drive motor to drive the material tray to release the tape; when the gravity pendulum moves to the second tension position, the position detection module can control the first drive motor to stop releasing the tape.

[0007] In a preferred embodiment of the present invention, the position detection module includes two limit switches, which are spaced at a preset angle and placed on both sides of the gravity pendulum.

[0008] In a preferred embodiment of the present invention, the gravity pendulum includes a swingable support rod and a weight disposed at one end of the support rod. The support rod is arranged along the same axis of rotation as the material tray, and the other end of the support rod is used to mount the tensioning wheel.

[0009] In a preferred embodiment of the present invention, the cutting mechanism includes a movable blade holder and a cutter disposed on the blade holder, the cutter being used to cut the adhesive layer of the tape.

[0010] In a preferred embodiment of the present invention, the cutter is formed from a ceramic material.

[0011] In a preferred embodiment of the present invention, the adhesive applicator further includes a positioning structure for positioning the adhesive tape, wherein the positioning structure has a positioning channel for the adhesive tape to pass through, and the cutter is capable of cutting the adhesive tape located in the positioning channel.

[0012] In a preferred embodiment of the present invention, the positioning structure includes a back plate and two positioning blocks detachably disposed on the back plate. The two positioning blocks are spaced apart to form a cutting gap for the cutter to enter. The positioning blocks are provided with positioning grooves for the tape to pass through. The two positioning grooves cooperate to form the positioning channel.

[0013] In a preferred embodiment of the present invention, the positioning block is formed of ceramic material.

[0014] In a preferred embodiment of the present invention, the adhesive applicator includes two adhesive applicator rollers, which are arranged at intervals along a preset direction, and the angle between the preset direction and the horizontal direction is α, where 0°≤α≤90°.

[0015] In a preferred embodiment of the present invention, the recycling mechanism includes a winding reel and a second drive motor for driving the winding reel to rotate.

[0016] In a preferred embodiment of the present invention, the recycling mechanism further includes a clamping structure disposed on the winding path of the release paper. The clamping structure includes a driven roller and a driving roller, and a clamping gap for clamping the release paper is formed between the driven roller and the driving roller. The rotation speed of the driving roller is less than the rotation speed of the winding reel.

[0017] In a preferred embodiment of the present invention, the take-up reel is provided with a first driven gear coaxially arranged, the drive roller is provided with a second driven gear coaxially arranged, and the shaft of the second drive motor is provided with a drive gear. The drive gear synchronously drives the first driven gear and the second driven gear through a transmission belt.

[0018] In a preferred embodiment of the present invention, the adhesive applicator further includes at least one guide roller disposed on the adhesive unwinding path of the unwinding mechanism.

[0019] The technical solution of the present invention has the following significant beneficial effects: When the adhesive applicator described in this invention is in use, when the gravity tensioning mechanism is in the first tensioning position, it can trigger the unwinding mechanism to release the adhesive tape, causing the tension of the adhesive tape to gradually decrease, and then the gravity tensioning mechanism can gradually move to the second tensioning position; when the gravity tensioning mechanism is in the second tensioning position, it can trigger the unwinding mechanism to stop releasing the adhesive tape, causing the tension of the adhesive tape to gradually increase, and then the gravity tensioning mechanism can gradually move to the first tensioning position.

[0020] This invention enables a closed-loop control between the gravity tensioning mechanism and the unwinding mechanism, providing a continuous and stable reference tension. It achieves an adjustment mechanism that stops unwinding when the tape is slack and automatically unwinds when it is tensioned, solving the problem of uncontrolled tape tension. It effectively avoids phenomena such as excessive tape stretching, loosening, or deformation caused by uncontrolled tension, ensuring the stability and controllability of the tape supply process and providing a reliable prerequisite for subsequent precise cutting and bonding.

[0021] Furthermore, during subsequent tape cutting and application, the stable tension significantly improved the tape's ability to maintain its position after cutting, preventing it from adhering to the blade and causing misalignment. Simultaneously, it effectively suppressed premature peeling of the tail strip due to stretching during long-side bonding. Moreover, the stable tension ensured good adhesion between the adhesive layer and release paper in non-working areas, reducing the risk of abnormal peeling, improving the accuracy and consistency of the vision system's recognition, ensuring the continuous application process, and significantly reducing the probability of misjudgment and bonding failure.

[0022] This invention achieves closed-loop feedback control by combining mechanical gravity with electrical control. It has strong adaptability, low sensitivity to external disturbances, and significantly improves the reliability, accuracy, and continuity of the adhesive application process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0025] Figure 1 This is a first-view perspective three-dimensional structural diagram of an embodiment of the adhesive applicator described in this invention; Figure 2 This is a second-view perspective three-dimensional structural diagram of an embodiment of the adhesive applicator described in this invention; Figure 3 This is a top view schematic diagram of an embodiment of the adhesive applicator described in this invention; Figure 4This is a three-dimensional structural schematic diagram of an embodiment of the second drive motor of the present invention; Figure 5 This is a three-dimensional structural diagram of one embodiment of the positioning structure and cutting mechanism described in this invention.

[0026] The reference numerals in the above figures are as follows: 10. Adhesive tape; 20. The first sheet is in a tight position; 30. The second sheet is in a tight position; 100. Unwinding mechanism; 110. Material tray; 120. First drive motor; 200. Gravity tensioning mechanism; 210. Tensioning wheel; 220. Gravity pendulum; 221. Support rod; 222. Weight; 230. Limit switch; 300. Cutting mechanism; 310. Tool holder; 320. Cutting blade; 400. Adhesive application mechanism; 410. Adhesive application roller; 500. Recycling mechanism; 510. Reel; 511. First driven gear; 520. Second drive motor; 521. Drive gear; 522. Drive belt; 600. Positioning structure; 610. Back plate; 620. Positioning block; 621. Positioning groove; 700. Clamping structure; 710. Driven roller; 720. Driving roller; 721. Second driven gear; 800, guide roller. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please refer to the following: Figures 1 to 5As shown, an embodiment of the present invention provides an adhesive application device, which includes an unwinding mechanism 100, a gravity tensioning mechanism 200, a cutting mechanism 300, an adhesive application mechanism 400, and a rewinding mechanism 500. The unwinding mechanism 100 is used to release the adhesive tape 10; the gravity tensioning mechanism 200 is disposed on the adhesive release path of the unwinding mechanism 100, and includes a first tensioning position 20 for triggering the unwinding mechanism 100 to release the adhesive tape 10, and a second tensioning position 30 for triggering the unwinding mechanism 100 to stop releasing the adhesive tape 10; the cutting mechanism 300 is disposed downstream of the gravity tensioning mechanism 200, and is used to cut the adhesive layer of the adhesive tape 10; the adhesive application mechanism 400 is disposed downstream of the cutting mechanism 300, and is used to apply the adhesive layer segment by segment; the rewinding mechanism 500 is used to rewind the release paper of the adhesive tape 10.

[0029] Overall, such as Figure 1 and Figure 2 In the embodiment shown, when the adhesive applicator is in use, when the gravity tensioning mechanism 200 is in the first tension position 20, it can trigger the unwinding mechanism 100 to release the tape 10, so that the tension of the tape 10 gradually decreases, and then the gravity tensioning mechanism 200 can gradually move to the second tension position 30; when the gravity tensioning mechanism 200 is in the second tension position 30, it can trigger the unwinding mechanism 100 to stop releasing the tape 10, so that the tension of the tape 10 gradually increases, and then the gravity tensioning mechanism 200 can gradually move to the first tension position 20.

[0030] This invention enables the gravity tensioning mechanism 200 to form a closed-loop control with the unwinding mechanism 100, providing a continuous and stable reference tension. It realizes an adjustment mechanism that stops unwinding when the tape 10 is slack and automatically unwinds when it is tensioned, solving the problem of uncontrolled tension of the tape 10. It effectively avoids phenomena such as excessive stretching, loosening, or deformation of the tape 10 due to uncontrolled tension, ensuring the stability and controllability of the tape supply process, and providing a reliable prerequisite for subsequent precise cutting and bonding.

[0031] Furthermore, during the subsequent cutting and application of the tape 10, the stable tension significantly improves the tape 10's ability to maintain its position after cutting, preventing it from adhering to the blade and causing misalignment; at the same time, it effectively suppresses the problem of premature peeling of the tail strip due to stretching during the long-side bonding process.

[0032] Furthermore, the stable tension ensures that the adhesive layer of the tape 10 and the release paper maintain a good bond in non-working areas, reducing the risk of abnormal peeling, improving the accuracy and consistency of the vision system's recognition, ensuring the continuous operation of the adhesive application process, and significantly reducing the probability of misjudgment and bonding failure.

[0033] This invention achieves closed-loop feedback control by combining mechanical gravity with electrical control. It has strong adaptability, low sensitivity to external disturbances, and significantly improves the reliability, accuracy, and continuity of the adhesive application process.

[0034] In embodiments of the present invention, such as Figure 2 and Figure 3 In the embodiment shown, the unwinding mechanism 100 includes a tray 110 for storing the tape 10 and a first drive motor 120 for driving the tray 110 to rotate.

[0035] Specifically, when the gravity tensioning mechanism 200 moves to the first tensioning position 20 due to the feeding movement of the tape 10, it triggers the first drive motor 120 to start unwinding and replenish the tape 10 in a timely manner to avoid tape supply delay.

[0036] When the gravity tensioning mechanism 200 moves to the second tensioning position 30 due to the loosening of the tape 10, the first drive motor 120 stops rotating and stops unwinding to prevent excessive release from causing the tape 10 to sag.

[0037] Designers can adjust the specific positions of the first tensioning position 20 and the second tensioning position 30 according to usage needs, and no specific restrictions are imposed here. Preferably, the first tensioning position 20 is located above the second tensioning position 30.

[0038] By setting the first drive motor 120 to precisely drive the material tray 110 to rotate, combined with the stable tension force provided by the gravity tensioning mechanism 200 and the real-time feedback from the position detection module, closed-loop control of the tape 10 unwinding process is realized. This not only ensures the continuity and stability of tape 10 conveying and effectively avoids problems such as tape breakage, misalignment, or premature peeling caused by tension fluctuations, but also significantly improves the reliability and continuity of the subsequent adhesive application process.

[0039] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 In the embodiment shown, the gravity tensioning mechanism 200 includes a tensioning wheel 210 for abutting the tape 10, a gravity pendulum 220 for driving the tensioning wheel 210, and a position detection module for detecting the position of the gravity pendulum 220. The position detection module is electrically connected to a first drive motor 120. When the gravity pendulum 220 moves to the first tensioning position 20, the position detection module can control the first drive motor 120 to drive the tray 110 to release the tape 10. When the gravity pendulum 220 moves to the second tensioning position 30, the position detection module can control the first drive motor 120 to stop releasing the tape 10.

[0040] By making the tensioning wheel 210 directly contact the belt 10, the constant gravity of the gravity pendulum 220 is converted into a stable tension applied to the belt 10, thereby achieving effective tensioning of the belt 10.

[0041] When the tension of the tape 10 increases due to the subsequent action of being pulled out, the gravity pendulum 220 rises accordingly. Once it reaches the first tension position 20, the position detection module immediately detects the displacement signal and feeds it back to the first drive motor 120, which drives the material tray 110 to unwind, preventing the tape 10 from being over-tensioned.

[0042] When the tension of the tape 10 decreases and it loosens, the gravity pendulum 220 falls back under its own weight. When it reaches the second tension position 30, the position detection module triggers a control signal to stop the drive tray 110 from unwinding, preventing the tape 10 from being excessively released and causing loosening or accumulation.

[0043] Designers can adjust the specific structure of the position detection module according to usage needs; no specific restrictions are imposed here. Preferably, such as... Figure 2 and Figure 4 In the embodiment shown, the position detection module includes two limit switches 230, which are set at a preset angle and placed on both sides of the gravity pendulum 220.

[0044] By placing two limit switches 230 on either side of the gravity pendulum 220, the swing position of the pendulum can be detected in real time via mechanical contact, offering advantages such as rapid response and high stability. Furthermore, the interval angle and position of the two limit switches 230 can be flexibly adjusted according to response requirements, optimizing the control rhythm and further improving the continuity and stability of the tension control of the conveyor belt 10.

[0045] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 In the embodiment shown, the gravity pendulum 220 includes a swingable support rod 221 and a weight 222 disposed at one end of the support rod 221. The support rod 221 is arranged along the same axis of rotation as the material tray 110, and the other end of the support rod 221 is used to set the tension wheel 210.

[0046] The constant gravity of the weight 222 provides a stable and adjustable reference tension for the tape 10. When the tension of the tape 10 changes, the support rod 221 drives the gravity pendulum 220 to swing up and down, thereby triggering the limit switches 230 on both sides to control the start and stop of the first drive motor 120. Furthermore, the tension can be flexibly adjusted by replacing the weight 222 with different masses, thus better adapting to the bonding requirements of tapes 10 of different specifications. It has the advantages of simple control, reliable response, and strong versatility.

[0047] In embodiments of the present invention, such as Figure 1 and Figure 5 In the embodiment shown, the cutting mechanism 300 includes a movable blade holder 310 and a cutter 320 disposed on the blade holder 310, the cutter 320 being used to cut the adhesive layer of the tape 10.

[0048] The movable blade holder 310 can drive the cutter 320 to move precisely, realizing the directional cutting of the adhesive layer of the tape 10. The cutter 320 is installed on the blade holder 310 and can perform cutting actions according to the preset trajectory, ensuring accurate cutting position and neat cut, thereby dividing the adhesive layer of the tape 10 into multiple segments.

[0049] Designers can adjust the specific driving method of the tool holder 310 according to usage requirements, without making specific restrictions here. For example, the tool holder 310 can be driven by a cylinder for reciprocating motion. Or, the tool holder 310 can be driven by a slide table for reciprocating motion. Or, the tool holder 310 can be driven by a motor in conjunction with a transmission structure for reciprocating motion.

[0050] In an embodiment of the present invention, the cutter 320 is formed from a ceramic material. By using a ceramic material for the cutter 320, the ceramic material has a low coefficient of surface friction, is less prone to adhesion of adhesive substances, facilitates clean cutting, and reduces maintenance frequency and downtime. Designers can adjust the composition of the ceramic material according to usage needs; no specific limitations are made here. Preferably, the ceramic material is zirconia ceramic.

[0051] In embodiments of the present invention, such as Figure 1 and Figure 5 In the embodiment shown, the adhesive applicator also includes a positioning structure 600 for positioning the adhesive tape 10. The positioning structure 600 has a positioning channel for the adhesive tape 10 to pass through, and the cutter 320 is capable of cutting the adhesive tape 10 located in the positioning channel.

[0052] The positioning channel on the positioning structure 600 can precisely guide and position the traveling tape 10, preventing it from shifting, twisting, or shaking during transport and ensuring that the tape 10 always runs stably along the preset path. Furthermore, the geometry of the positioning channel can be adapted to the width and thickness of the tape 10, achieving a constraint effect. This reduces the displacement and deformation of the tape 10 when cutting, thus avoiding defects such as slanted cuts, stringing, or adhesion.

[0053] In embodiments of the present invention, such as Figure 5 In the embodiment shown, the positioning structure 600 includes a back plate 610 and two positioning blocks 620 detachably disposed on the back plate 610. The two positioning blocks 620 are spaced apart to form a cutting gap for the cutter 320 to enter. The positioning blocks 620 are provided with positioning grooves 621 for the tape 10 to pass through. The two positioning grooves 621 cooperate to form a positioning channel.

[0054] Specifically, two positioning grooves 621 are arranged at intervals along the adhesive dispensing path to form positioning channels, and a cutting gap is formed between the two positioning blocks 620 to allow the cutter 320 to enter. This allows the cutter 320 to cut the tape 10 located between the two positioning blocks 620, ensuring a good cutting effect. Furthermore, by employing a detachable design, the positioning blocks 620 can be quickly replaced or adjusted according to the type of tape 10 to adapt to tapes 10 of different widths and thicknesses, significantly improving versatility and changeover efficiency.

[0055] Designers can adjust the specific material of the positioning block 620 according to usage requirements, and no specific restrictions are imposed here. Preferably, the positioning block 620 is formed of ceramic material. By using ceramic material to form the positioning block 620, the surface of the ceramic material is smooth and dense, and the coefficient of friction is low, which can significantly reduce the resistance and stickiness when the tape 10 passes through.

[0056] In embodiments of the present invention, such as Figure 1 , Figure 4 and Figure 5 In the embodiment shown, the adhesive applicator 400 includes two adhesive applicator rollers 410, which are arranged at intervals along a preset direction. The angle between the preset direction and the horizontal direction is α, where 0°≤α≤90°.

[0057] Two adhesive rollers 410 work together to form a continuous pressing zone, which simultaneously presses both ends of the adhesive section, preventing the tape 10 from sticking back or shifting. Furthermore, by adjusting the angle α, it can flexibly adapt to the bonding angle requirements of different workpiece surfaces, achieving multi-position bonding modes from horizontal bonding to vertical pressing. The preset direction is the direction of the center line connecting the two adhesive rollers 410.

[0058] Specifically, when α is 0°, the two adhesive rollers 410 are arranged horizontally, which is suitable for smooth adhesive application to flat substrates. When α approaches 90°, the two adhesive rollers 410 tend to be arranged vertically, which facilitates efficient application on vertical or edge-supported structures.

[0059] Designers can adjust the specific shape and structure of the two adhesive application rollers 410 according to usage needs, and no specific limitations are imposed here. In one feasible embodiment, the two adhesive application rollers 410 have the same shape and structure. In another feasible embodiment, the two adhesive application rollers 410 have different shapes and structures.

[0060] In embodiments of the present invention, such as Figure 1 , Figure 3 and Figure 4In the illustrated embodiment, the recycling mechanism 500 includes a take-up reel 510 and a second drive motor 520 for driving the take-up reel 510 to rotate. The second drive motor 520 can drive the take-up reel 510 and control its start-up, stop, and rotation speed, thus achieving stable and continuous recycling of release paper.

[0061] During the winding process of release paper, as the amount of release paper being wound increases, the winding speed of the release paper also changes, thus affecting the winding quality of the release paper. Specifically, the winding tension of some release paper is too low, resulting in a looser roll, while the winding tension of some release paper is too high, resulting in a tighter roll.

[0062] To address the technical problem of uneven winding tension, resulting in looseness or excessive tightness, caused by changes in linear speed during the winding process of release paper, in an embodiment of the present invention, the recycling mechanism 500 further includes a clamping structure 700 disposed on the winding path of the release paper. The clamping structure 700 includes a driven roller 710 and a driving roller 720, with a clamping gap formed between the driven roller 710 and the driving roller 720 for clamping the release paper. The rotation speed of the driving roller 720 is less than the rotation speed of the winding reel 510.

[0063] The drive roller 720 can be driven by an independent drive source. The rotation speed of the drive roller 720 is set to be less than the rotation speed of the take-up reel 510. Therefore, the take-up reel 510 needs to pull the release liner to complete the winding action, maintaining appropriate tension on the release liner during winding and preventing the paper roll from becoming loose. Furthermore, the drive roller 720 can also provide a certain pulling force, preventing excessive tension on the release liner and avoiding the problem of the paper roll being too tight.

[0064] In one feasible embodiment, such as Figure 4 In the embodiment shown, the take-up reel 510 is provided with a first driven gear 511 coaxially arranged, the drive roller 720 is provided with a second driven gear 721 coaxially arranged, and the shaft of the second drive motor 520 is provided with a drive gear 521. The drive gear 521 synchronously drives the first driven gear 511 and the second driven gear 721 through the transmission belt 522.

[0065] The drive gear 521, the first driven gear 511, and the second driven gear 721 work together to achieve a linked drive, allowing the drive gear 521 to simultaneously drive both the first and second driven gears. Furthermore, by controlling the gear ratio of the first and second driven gears 511, the angular velocity of the first driven gear 511 is made greater than that of the second driven gear 721. This forces the winding reel 510 to pull the release paper in the clamping gap to complete the winding, ensuring the quality of the release paper's winding.

[0066] Designers can adjust the gear ratio of the first driven gear 511 and the second driven gear 721 according to usage requirements, without specifying a particular numerical limit. For example, the gear ratio of the first driven gear 511 and the second driven gear 721 can be set to 1:2. Or, the gear ratio of the first driven gear 511 and the second driven gear 721 can be set to 1:3.

[0067] In embodiments of the present invention, such as Figure 1 In the embodiment shown, the adhesive applicator further includes at least one guide roller 800 disposed on the adhesive feeding path of the unwinding mechanism 100.

[0068] By setting at least one guide roller 800 on the glue feeding path of the unwinding mechanism 100, the guide roller 800 is used to guide the running path of the conveyor belt 10, ensuring that the conveyor belt 10 maintains the correct direction and spatial positioning during the conveying process. By reasonably arranging the position and number of guide rollers 800, the glue feeding path can be effectively adjusted, avoiding wrinkles, stretching deformation or deviation caused by path deviation, excessively small bending radius or external disturbance.

[0069] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0070] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An adhesive applicator, characterized in that, include: An unwinding mechanism for releasing the tape; A gravity tensioning mechanism is disposed on the tape release path of the unwinding mechanism. The gravity tensioning mechanism includes a first tensioning position for triggering the unwinding mechanism to release the tape and a second tensioning position for triggering the unwinding mechanism to stop releasing the tape. A cutting mechanism is provided downstream of the gravity tensioning mechanism and is used to cut the adhesive layer of the tape. An adhesive application mechanism is located downstream of the cutting mechanism and is used to apply the adhesive layer segment by segment. A recycling mechanism for winding up the release paper of the tape.

2. The adhesive applicator as described in claim 1, characterized in that, The unwinding mechanism includes a tray for storing the tape and a first drive motor for driving the tray to rotate.

3. The adhesive applicator as described in claim 2, characterized in that, The gravity tensioning mechanism includes a tensioning wheel for abutting the tape, a gravity pendulum for driving the tensioning wheel, and a position detection module for detecting the position of the gravity pendulum, wherein the position detection module is electrically connected to the first drive motor. When the gravity pendulum moves to the first tension position, the position detection module can control the first drive motor to drive the material tray to release the tape; When the gravity pendulum moves to the second tension position, the position detection module can control the first drive motor to stop releasing the tape.

4. The adhesive applicator as described in claim 3, characterized in that, The position detection module includes two limit switches, which are set at a preset angle and placed on both sides of the gravity pendulum.

5. The adhesive applicator as described in claim 3, characterized in that, The gravity pendulum includes a swingable support rod and a weight disposed at one end of the support rod. The support rod and the material tray are arranged on the same axis of rotation. The other end of the support rod is used to set the tensioning wheel.

6. The adhesive applicator as described in claim 1, characterized in that, The cutting mechanism includes a movable blade holder and a cutter mounted on the blade holder, the cutter being used to cut the adhesive layer of the tape.

7. The adhesive applicator as described in claim 6, characterized in that, The cutter is formed from ceramic material.

8. The adhesive applicator as described in claim 6, characterized in that, The adhesive applicator further includes a positioning structure for positioning the adhesive tape, wherein the positioning structure has a positioning channel for the adhesive tape to pass through, and the cutter is capable of cutting the adhesive tape located in the positioning channel.

9. The adhesive applicator as described in claim 8, characterized in that, The positioning structure includes a back plate and two positioning blocks detachably mounted on the back plate. The two positioning blocks are spaced apart to form a cutting gap for the cutter to enter. The positioning blocks are provided with positioning grooves for the tape to pass through. The two positioning grooves cooperate to form the positioning channel.

10. The adhesive applicator as described in claim 9, characterized in that, The positioning block is formed from ceramic material.

11. The adhesive applicator as claimed in claim 1, characterized in that, The adhesive applicator includes two adhesive applicator rollers, which are arranged at intervals along a preset direction. The angle between the preset direction and the horizontal direction is α, where 0°≤α≤90°.

12. The adhesive applicator as described in claim 1, characterized in that, The recycling mechanism includes a winding reel and a second drive motor for driving the winding reel to rotate.

13. The adhesive applicator as described in claim 12, characterized in that, The recycling mechanism further includes a clamping structure disposed on the winding path of the release paper. The clamping structure includes a driven roller and a driving roller, and a clamping gap for clamping the release paper is formed between the driven roller and the driving roller. The rotation speed of the driving roller is less than the rotation speed of the winding reel.

14. The adhesive applicator as described in claim 13, characterized in that, The take-up reel is provided with a first driven gear arranged coaxially, the drive roller is provided with a second driven gear arranged coaxially, and the shaft of the second drive motor is provided with a drive gear. The drive gear drives the first driven gear and the second driven gear synchronously through a transmission belt.

15. The adhesive applicator as claimed in claim 1, characterized in that, The adhesive applicator also includes at least one guide roller disposed on the adhesive unwinding path of the unwinding mechanism.

Images