A glue removal structure and a dot glue coating device containing the structure

Abstract

A glue removal structure and a dot-applied adhesive applicator containing the same are disclosed. The glue removal structure includes a glue removal wheel disposed on a correction head, the glue removal wheel being located at the rear end of a roller assembly. The glue removal wheel includes a rotating shaft and a first radial boss extending radially on the rotating shaft. The rotating shaft is rotatably connected to the correction head. Multiple first radial bosses are provided and spaced apart from each other. The first radial bosses are adjacent to the roller assembly. The solution of this application has the advantage of effectively removing residual glue from the roller, thereby not affecting the normal operation and transfer of the adhesive tape.

Description

Technical Field

[0001] This application relates to the technical field of dot adhesive applicators, and more specifically, to an adhesive removal structure and a dot adhesive applicator containing the same. Background Technology

[0002] Dot adhesive, also known as a dot adhesive applicator, is an adhesive application device similar to correction tape. It includes a housing, a tape core and a waste pulley inside the housing, and a tape head (or correction head) at one end of the housing. A roller is mounted on the tape head. Adhesive tape with dots of double-sided adhesive is drawn from the tape core, passes through the roller, and then loops back onto the waste pulley. During use, the roller presses the tape against the surface to be bonded. Pulling the tape transfers the dots of double-sided adhesive onto the surface, allowing bonding between other structures and the surface. This type of adhesive allows for transfer coating at different locations as needed, making it convenient to operate. Furthermore, as it is a solid dot-shaped double-sided adhesive, it does not contaminate the bonded parts or hands. Because the adhesive is distributed in dots, if the application position needs adjustment, the transferred adhesive can be removed by wiping or rubbing.

[0003] However, current dot-on adhesive applicators have limitations due to the performance of the double-sided adhesive coated on the tape. When the tape is pressed onto the bonding surface by rollers for transfer printing, residual adhesive is squeezed out from both sides of the tape width and adheres to the rollers. As the rollers rotate continuously during use, this residual adhesive accumulates and spreads across the entire outer surface of the rollers. This can cause the tape to stick to the rollers during the transfer printing process, preventing proper transfer. Furthermore, the residual adhesive can also cause unevenness on the roller surface, further affecting the normal transfer of the tape. Utility Model Content

[0004] This application addresses the aforementioned shortcomings of the prior art by providing a glue removal structure that can effectively remove residual glue from rollers without affecting the normal operation and transfer of the tape.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows: a glue removal structure, which includes a glue removal wheel disposed on a correction head, the glue removal wheel being located at the rear end of a roller assembly; the glue removal wheel includes a rotating shaft and a first radial boss extending radially on the rotating shaft, the rotating shaft being rotatably connected to the correction head, and multiple first radial bosses being disposed therein and spaced apart from each other; the first radial bosses being adjacent to the roller assembly.

[0006] With the above structure, this application provides a glue-removing wheel on the correction head of the dot adhesive applicator. The glue-removing wheel is located at the rear end of the roller assembly supporting the dot adhesive tape. When residual glue is generated on the roller assembly, the residual glue comes into contact with the glue-removing wheel and is bonded from the roller assembly to the glue-removing wheel. Since the glue-removing wheel is provided with multiple first radial protrusions spaced apart from each other, the gaps formed by the intervals can be used to store the residual glue, so that the residual glue will not be transferred to the roller assembly again. Thus, the dot adhesive will not affect the normal operation of the tape during the coating and transfer process, and the surface of the roller assembly will remain clean.

[0007] Furthermore, the adhesive removal wheel has a greater adhesion force to residual adhesive than the roller assembly. This design ensures that when residual adhesive is generated on the roller assembly, it can be smoothly adhered to the adhesive removal wheel, thus not affecting the effective cooperation between the roller assembly and the tape, and ensuring smooth tape transfer.

[0008] Furthermore, the rotating shaft is also provided with a second radial boss, which is located within the interval of the first radial boss, and the extended outer diameter of the second radial boss is smaller than the extended outer diameter of the first radial boss. With this structure, the second radial boss will rotate with the roller assembly during the process of the adhesive removal wheel adhering residual adhesive. During the rotation process, the second radial boss can play the role of scraping adhesive, smoothly scraping the residual adhesive into the interval for storage.

[0009] Furthermore, the second radial boss is distributed along the circumferential portion of the rotation axis, and the first radial boss is distributed along the circumferential portion of the rotation axis. With this structure, the second radial boss is not a boss that is completely arranged in a circumferential circle, but only covers a portion of the circumferential direction. The other positions are formed with deeper recesses between the second and first radial bosses to accommodate residual adhesive.

[0010] Furthermore, the second radial bosses are arranged in two rows and are distributed radially to the left and right along the rotation axis; that is, two sets of second radial bosses are arranged radially to the left and right on the rotation axis. In this way, during the rotation of the glue removal wheel, two glue scraping actions can be achieved within one cycle, so as to remove the generated residual glue from the roller assembly as quickly as possible and store it in the interval.

[0011] Furthermore, a gap is provided between the two end faces of the roller assembly in the axial direction and the inner wall of the corresponding side of the correction head; with this structure, a certain storage space can be provided for residual glue to stay briefly, avoiding the situation where the residual glue will stick tightly between the roller assembly and the correction head due to the lack of a gap, making it unable to rotate.

[0012] Furthermore, the spacing position corresponds radially to the first radial protrusion; that is, the position of the spacing formed between the two end faces of the roller assembly in the axial direction and the inner wall of the corresponding side of the correction head corresponds to the first radial protrusion on the adhesive removal wheel, so that the protrusion can quickly adhere the residual adhesive within the spacing to the adhesive removal wheel.

[0013] Furthermore, the scraping surface of the second radial protrusion is an inclined surface, which is inclined from its outer end toward the axis of rotation. With this structure, the scraping process of the scraping surface can better scrape the residual glue from the roller assembly into the interval for storage, and scrape it more cleanly.

[0014] Furthermore, the axial extension widths of the plurality of first radial protrusions are equal, that is, the axial extension widths of the plurality of first radial protrusions are equal, so that a strong adhesion can be achieved with the residual adhesive at various positions on the roller assembly, and the residual adhesive can be adhered to the adhesive removal roller.

[0015] Furthermore, the number of intervals formed between the plurality of first radial protrusions is odd, with the spacing of the middle interval being greater than that of the intervals on both sides; with this structure, storage spaces for different amounts of residual adhesive can be formed, and the residual adhesive moves back and forth axially on the roller assembly as the roller rotates, and can be distributed and stored in different intervals.

[0016] This application also provides a dot adhesive applicator, which includes the adhesive removal structure described above. The applicator with this adhesive removal structure can remove residual adhesive from the roller assembly in a timely manner and store it in the gap formed between the first radial bosses, thereby achieving greater storage of residual adhesive and extending the service life of the adhesive removal roller, eliminating the need for frequent replacement. Attached Figure Description

[0017] Figure 1 This application presents a structural schematic diagram of a correction head with a glue-removing wheel, shown in the first view.

[0018] Figure 2 This application presents a structural schematic diagram of a correction head with a glue-removing wheel, shown in the second view.

[0019] Figure 3 This application presents a schematic diagram of the connection between the glue removal wheel and the correction head.

[0020] Figure 4 This application presents a structural schematic diagram of the first view of the adhesive removal wheel.

[0021] Figure 5 This application presents a structural schematic diagram of the adhesive removal wheel in its second view.

[0022] Figure 6This application presents a structural schematic diagram of the first sectional view of the adhesive removal wheel.

[0023] Figure 7 This application presents a schematic diagram of the structure of a first view of the dot adhesive coating device.

[0024] Figure 8 This application presents a second view of the structure of the dot-on adhesive applicator.

[0025] As shown in the attached diagram: 1. Correction head, 2. Adhesive removal wheel, 201. Rotating shaft, 202. First radial boss, 203. Second radial boss, 204. Adhesive scraping surface, 3. Roller assembly, 4. Adhesive belt. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are merely preferred embodiments, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] Furthermore, it should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or it may be fixed via another intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or it may be simultaneously connected to another intermediate component. When a component is considered to be "set on" another component, it can be directly set on the other component or it may be simultaneously connected to another intermediate component. The terms "vertical," "horizontal," "left," "right," front and back, or up and down, and similar expressions used herein are for illustrative purposes only, and such directional descriptions are set according to the actual orientation of the product in use; unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular, specific embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] As attached Figure 1-8The diagram illustrates a glue removal structure according to this application. This structure includes a glue removal wheel 2 mounted on a correction head 1. The glue removal wheel 2 is located at the rear end of the roller assembly 3 (i.e., in the state of normal use of the glue dot application, where the roller assembly 3 is located at the front end for supporting and rolling the tape 4; the glue removal wheel 2 in this application is located behind and adjacent to the roller assembly 3 for easy adhesion of residual glue). The glue removal wheel 2 includes a rotating shaft 201 and a first radial boss 202 extending radially from the rotating shaft 201. The rotating shaft 201 is rotatably connected to the correction head 1. Multiple first radial bosses 202 are provided and spaced apart from each other. The first radial bosses 202 are adjacent to the roller assembly 3 (i.e., they are close together but not touching). To avoid wear, the distance is sufficient to ensure that any residual adhesive is promptly contacted, adhered to, and scraped off by the adhesive removal wheel 2. Specifically, the correction head 1 of this application can be a conventional correction head 1 structure for existing dot adhesive, which is used to lead out the tape 4 and support the roller assembly 3. The innovation of this application is that an adhesive removal wheel 2 is also provided on the correction head 1. The adhesive removal wheel 2 is located at the rear end of the roller assembly 3 and is used to adhere and remove residual adhesive on it, thereby keeping the roller assembly 3 free of residual adhesive. The adhesive removal wheel 2 only needs to be provided with a pair of shaft holes symmetrically arranged along its width at a suitable position on the correction head 1, and then the two ends of the rotating shaft 201 can be rotated and fitted into the shaft holes. The setup is simple and convenient and does not require much modification to the correction head 1, and can effectively remove the residual adhesive generated on the roller assembly 3.

[0029] By adopting the above structure, this application provides a glue-removing wheel 2 on the correction head of the dot glue applicator. The glue-removing wheel is located at the rear end of the roller assembly 3 that supports the dot glue tape 4. When residual glue is generated on the roller assembly 3, the residual glue comes into contact with the glue-removing wheel 2 and is bonded from the roller assembly 3 to the glue-removing wheel 2. Since the glue-removing wheel 2 is provided with a plurality of first radial protrusions 202 that are spaced apart from each other, the gaps formed by the intervals can be used to store the residual glue. The residual glue will not be transferred to the roller assembly 3 again, so that the dot glue will not affect the normal operation of the tape 4 during the coating and transfer process, and the surface of the roller assembly 3 will remain clean.

[0030] As an example, the adhesive removal wheel 2 described in this application has a greater adhesion force to residual adhesive than the roller assembly 3. This design ensures that when residual adhesive is generated on the roller assembly 3, it can be smoothly adhered to the adhesive removal wheel 2, thus not affecting the effective cooperation between the roller assembly 3 and the tape 4, and ensuring smooth transfer of the tape 4. Specifically, the adhesive adhesion strength can be set by using materials such as POM and ABS to make the adhesive removal wheel 2, giving it poor surface anti-adhesion properties (i.e., strong adhesion), making it easier to adhere to the residual adhesive and transfer it from the roller assembly 3.

[0031] As attached Figure 1-6 As shown, the rotating shaft 201 of this application is further provided with a second radial boss 203. The second radial boss 203 is located within the interval of the first radial boss 202, and the extended outer diameter of the second radial boss 203 is smaller than the extended outer diameter of the first radial boss 202. With this structure, this application forms three structures with different extended outer diameters through the first radial boss 202, the second radial boss 203 and the rotating shaft 201, forming a complete adhesive removal wheel 2. In the process of bonding residual adhesive, the three staggered structures with different outer diameters are more conducive to bonding residual adhesive and improve the overall adhesive bonding strength of the adhesive removal wheel 2 to residual adhesive. When the adhesive removal wheel 2 bonds residual adhesive, the second radial boss 203 will rotate with the roller assembly 3. During the rotation process, one side of the second radial boss 203 forms a scraping surface, which can play a scraping role, and smoothly scrape the residual adhesive into the interval formed by the first radial boss 202 for storage.

[0032] As attached Figure 4-6 As shown, the second radial boss 203 of this application is distributed along the circumferential portion of the rotation axis 201, and the first radial boss 202 is distributed along the circumferential direction of the rotation axis 201. With this structure, the second radial boss 203 is not a boss that is completely circumferentially arranged, but only covers a portion of the circumferential direction, while the first radial boss 202 is formed by a complete radial extension. The other positions of the second radial boss 203 are formed by deeper recesses between it and the first radial boss 202 to accommodate residual adhesive.

[0033] As attached Figure 5-6 As shown, the second radial protrusion 203 described in this application is provided in two rows and is distributed radially to the left and right along the rotation shaft 201. That is, two sets of second radial protrusions 203 are arranged radially to the left and right on the rotation shaft 201. In this way, during the rotation of the adhesive removal wheel 2, two adhesive scraping actions can be achieved within one revolution, so as to remove the generated residual adhesive from the roller assembly as quickly as possible and store it in the interval. The adhesive scraping surface of the two rows of second radial protrusions 203 is in the same direction relative to the first radial protrusion 202, so that adhesive can be scraped twice in the circumferential direction during its rotation.

[0034] As attached Figure 5-6 As shown, the roller assembly 3 described in this application has a gap between its two end faces in the axial direction and the inner wall of the corresponding side of the correction head 1, that is, there is a certain gap between the end faces and the inner wall. With this structure, residual glue can be given a certain storage space here and stay briefly, avoiding the situation where the residual glue will stick tightly between the roller assembly 3 and the correction head 1 due to the lack of gap, making it unable to rotate.

[0035] As attached Figure 1-2As shown, the spacing position described in this application corresponds radially to the first radial protrusion 202; that is, the position of the spacing formed between the two end faces of the roller assembly 3 in the axial direction and the inner wall of the corresponding side of the correction head 1 corresponds to the first radial protrusion 202 on the adhesive removal wheel 2, so that the protrusion can quickly adhere the residual adhesive in the spacing to the adhesive removal wheel.

[0036] As attached Figure 6 As shown, the scraping surface 204 of the second radial protrusion 203 described in this application is an inclined surface. The inclined surface 204 is inclined from its outer end toward the axis of the rotating shaft 201. That is, the scraping surface 204 forms an inclined structure that gradually shrinks from the outside to the inside. With this structure, the scraping process of the scraping surface can better scrape the residual glue from the roller assembly into the interval for storage, and scrape it more cleanly.

[0037] As attached Figure 1-5 As shown, the axial extension widths of the plurality of first radial protrusions 202 described in this application are equal, that is, the axial extension widths of the plurality of first radial protrusions 202 are equal, so that a stable adhesive force can be achieved with the residual adhesive at various positions on the roller assembly 3, and the residual adhesive can be adhered to the adhesive removal roller 2.

[0038] As attached Figure 1-5 As shown, the number of intervals formed between the plurality of first radial protrusions 202 described in this application is odd, and the spacing of the middle interval is greater than the spacing of the intervals on both sides; with this structure, storage spaces for different storage amounts of residual adhesive can be formed, and the residual adhesive moves back and forth axially on the roller assembly as the roller rotates, and can be distributed and stored in different intervals.

[0039] As attached Figure 7-8 As shown, this application also provides a dot adhesive applicator, which includes the adhesive removal structure described above. The applicator with this adhesive removal structure can remove residual adhesive from the roller assembly 3 in a timely manner and store it in the gap formed between the first radial bosses 202, thereby achieving greater storage of residual adhesive and extending the service life of the adhesive removal roller without the need for frequent replacement.

[0040] The specific working principle and process of this dot-apply adhesive applicator are as follows: When residual adhesive is generated on the front roller assembly 3, and some of the adhesive accumulates, it will rub against the rear adhesive removal roller 2 as it rotates. Since the adhesive removal roller 2 has better adhesion to residual adhesive than the roller assembly 1, the residual adhesive will be carried onto the adhesive removal roller 2 and squeezed into the staggered pits formed by the multiple first radial protrusions 202 and second radial protrusions 203 of the adhesive removal roller 2 and the rotating shaft 201 during the rolling process. This ensures that the entire section of the roller assembly 1 is fully covered by the adhesive residue and that the pit depth of this application can also meet the requirements. After collecting the new residual adhesive, the old residual adhesive is stored. Therefore, the coating device of this application, which is equipped with an adhesive removal wheel 2, can remove and collect the residual adhesive on the dot glue head roller assembly 3, thereby improving the product user experience. This application is the first to set an adhesive removal wheel 2 on the correction head 1, which can effectively avoid the uneven coating caused by the accumulation of residual adhesive in the prior art without an adhesive removal wheel 2, or the residual adhesive accumulating to a certain extent and being coated on the paper surface, causing pollution and requiring manual removal, or the residual adhesive returning to the product with the waste tape and affecting the unused part, or even causing phenomena such as reverse adhesion and dragging.

Claims

1. A glue removal structure, characterized in that: The structure includes a glue-removing wheel (2) disposed on the correction head (1), the glue-removing wheel (2) being located at the rear end of the roller assembly (3); the glue-removing wheel (2) includes a rotating shaft (201) and a first radial boss (202) extending radially on the rotating shaft (201), the rotating shaft (201) being rotatably connected to the correction head (1), and multiple first radial bosses (202) being provided and spaced apart from each other; the first radial bosses (202) being adjacent to the roller assembly (3).

2. The adhesive removal structure according to claim 1, characterized in that: The adhesive removal wheel (2) has a greater adhesion force to residual adhesive than the roller assembly (3).

3. The adhesive removal structure according to claim 1, characterized in that: The rotating shaft (201) is also provided with a second radial boss (203), which is located within the interval of the first radial boss (202), and the extended outer diameter of the second radial boss (203) is smaller than the extended outer diameter of the first radial boss (202).

4. The adhesive removal structure according to claim 3, characterized in that: The second radial boss (203) is distributed along the circumferential portion of the rotation axis (201), and the first radial boss (202) is distributed along the circumferential portion of the rotation axis (201).

5. The adhesive removal structure according to claim 3, characterized in that: The second radial boss (203) is provided in two rows and is distributed radially to the left and right along the rotation axis (201).

6. The adhesive removal structure according to claim 1, characterized in that: A gap is provided between the two end faces of the roller assembly (3) in the axial direction and the inner wall of the corresponding side of the correction head (1); the gap is radially corresponding to the first radial protrusion (202).

7. The adhesive removal structure according to claim 3, characterized in that: The adhesive scraping surface (204) of the second radial protrusion (203) is an inclined surface, which is inclined from the outer end toward the axis of the rotating shaft (201).

8. The adhesive removal structure according to claim 1, characterized in that: The axial extension widths of the first radial protrusion (202) are equal.

9. The adhesive removal structure according to claim 1, characterized in that: The number of intervals formed between the first radial protrusions (202) is odd, with the spacing of the middle interval being greater than the spacing of the intervals on both sides.

10. A dot-applied adhesive film applicator, characterized in that: The dot-on adhesive applicator includes the adhesive removal structure as described in any one of claims 1-9.

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