Thin film applicator for easy replacement of filler

Abstract

This invention provides a film applicator for easy replacement of fillers, comprising an applicator body for installing fillers, including a front housing and a rear housing that move relative to each other via side guide grooves and a carrier plate, and components such as an applicator head that slides out with the carrier plate, a first drive shaft, and a second drive shaft; it also includes a retraction mechanism consisting of a retraction trigger unit, a retraction linkage unit, and a driven unit. This invention allows the applicator head to be completely disengaged from the film tape by moving back and forth during replacement, avoiding snagging problems and improving convenience.

Description

Technical Field

[0001] This invention relates to the field of stationery, and in particular to a film applicator that facilitates the replacement of fillers. Background Technology

[0002] Correction tape, also known as correction tape or sticker tape, is a common stationery item used to cover up mistakes and provide carbon copy correction. There are many types of products on the market, such as disposable correction tape that can be discarded after use, or replaceable correction tape that retains the casing and can be reused with replacement clips. Nowadays, most products are replaceable, in order to reduce the proportion of waste materials in response to environmental protection.

[0003] Replaceable film applicators can be configured in various styles depending on the placement of the internal gear assembly and applicator head. Among them, the design where the gear assembly, applicator head, and other components are located in the main body (i.e., the part that is retained when the clip is replaced) can be said to be the style that generates the least amount of waste material. The main structure of this type of film applicator includes a front shell and a rear shell that can slide open relative to each other, as well as the mechanism (such as gear assembly, applicator head, etc.) assembled in the rear shell. When replacing, the user can slide the mechanism out of the rear shell, remove the old filler (i.e., the used clip), insert the new filler, and push the rear shell back to complete the replacement operation.

[0004] However, the replacement process for this type of film applicator is currently inconvenient. For example, when removing the old filler, the tape is loose and easily snagged, causing a lot of empty tape to be pulled out, making disposal difficult. Also, when installing a new filler, the existing product's design inevitably causes the film tape to be touched during installation, resulting in changes in tightness. Therefore, after pushing it into the back housing, the film tape often cannot be tightly wrapped around the applicator head (i.e., it is loose outside the applicator head). Consequently, users often need to adjust and install it multiple times to use it normally. Furthermore, during these adjustments, the applicator film may accidentally stick to the surrounding area. These are all potential problems and inconveniences that may arise when using the current product, and further improvements are needed. Summary of the Invention

[0005] The present invention provides a film applicator that facilitates the replacement of fillers. Its purpose is to overcome the shortcomings of the prior art, facilitate the replacement operation, and prevent the film tape from becoming messy and loose during each replacement operation.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A film applicator for easy replacement of fillers includes an applicator body for mounting a filler, comprising a front housing and a rear housing that can be opened and closed relative to each other. The front housing includes a front opening and a side guide groove, and the rear housing includes a carrier plate that can slide relative to each other in the side guide groove, allowing the rear housing to move relative to the front housing between a closed position and an open position, so that the filler can be replaced in the open position. The carrier plate is provided with an applicator head that can extend out of the front opening in the closed position, and a first drive shaft and a second drive shaft for mounting and connecting the filler, and the first drive shaft can be linked to the second drive shaft via a linkage mechanism.

[0008] Its features are:

[0009] The applicator head is mounted on a receiving component that can move back and forth relative to the carrier plate, and the receiving component is provided with a driven unit.

[0010] The carrier plate is provided with a retraction linkage unit on one side of the driven unit, which is used to link the driven unit to move the receiving member and the application head back and forth relative to the carrier plate between an extended position and a retracted position.

[0011] The front housing is provided with a retraction trigger unit, which allows the retraction linkage unit to contact and be driven by the retraction trigger unit when it moves with the rear housing.

[0012] When the rear housing moves from the engaged position to the open position and the retraction linkage unit contacts the retraction trigger unit, the retraction linkage unit can be driven by the retraction trigger unit and linked to the driven unit, so that the receiving member and the application head can move backward relative to the carrier plate towards the retracted position, allowing the application head to separate from the film tape of the filler.

[0013] That is:

[0014] To overcome the inconvenience of changing existing products, the main improvement of this invention includes a coating head retraction mechanism and a rewind linkage mechanism provided in the body of the applicator.

[0015] The applicator head retraction mechanism mainly includes a driven unit, a retraction linkage unit, and a retraction trigger unit. The driven unit is disposed within an applicator head assembly and, when driven, can move the applicator head back and forth between an extended position and a retracted position. Specifically, the applicator head assembly includes an applicator head and a receiving member. The applicator head is disposed at the front end of the receiving member, and the driven unit is disposed on an extension section extending rearward from the receiving member. The applicator head assembly can move back and forth relative to the carrier plate via this extension section. The retraction linkage unit is disposed on the carrier plate and, when driven, can link the driven unit to the receiving member. Specifically, the carrier plate has at least one limiting protrusion and a recessed or hollowed-out limiting groove at appropriate positions around it. The limiting protrusion is used to provide and restrict the spatial position for the extension segment to move relative to the carrier plate, while the limiting groove is used to accommodate the driven unit and restrict the driven unit to move only within the range of the limiting groove when it is actuated. The retraction triggering unit is disposed at an appropriate position on the front housing, mainly at a position that can contact the retraction linkage unit when it moves with the rear housing relative to the front housing. During movement and contact, the retraction linkage unit can be driven by the retraction triggering unit and thus linked to the driven unit. Therefore, when the rear housing moves from the engaged position to the open position and the retraction linkage unit contacts the retraction trigger unit, the retraction linkage unit can be driven by the retraction trigger unit and linked to the driven unit, so that the receiving member and the applicator head can move backward relative to the carrier plate towards the retracted position, so that the applicator head can be completely separated from the film tape in a retracted manner, thereby reducing the problem of snagging the film tape when changing the filler.

[0016] The rewind linkage mechanism mainly includes a rewind linkage unit and a rewind trigger unit. The rewind linkage unit is located at the end of the first drive shaft away from the filler, so that it can rotate together with the first drive shaft when driven. The rewind trigger unit is located at an appropriate position on the front housing, mainly at a position where it can contact the rewind linkage unit when the rear housing moves relative to the front housing. When the two contact during the movement, the rewind linkage unit can be driven by the rewind trigger unit, thereby driving the first drive shaft to rewind the loose film strip of the filler. Specifically, when the rear housing moves from the engaged position to the open position and the rewind linkage unit contacts the rewind trigger unit, the rewind linkage unit can be driven by the rewind trigger unit to rotate the first drive shaft, so that the first drive shaft can drive the loose film strip of the filler to rewind, thereby ensuring that the film strip is not loose each time it is opened, which facilitates the user's replacement operation.

[0017] Furthermore, the applicator body of the present invention also includes a configuration of mechanisms such as linkage, clutch, and restraint. The linkage mechanism mainly includes a supply toothed disc, a return toothed disc, and a linkage toothed disc; the supply toothed disc is sleeved on the first drive shaft and can be linked with the first drive shaft; the return toothed disc is disposed at the end of the second drive shaft away from the filler and can rotate with the second drive shaft; and the linkage toothed disc is disposed on the carrier plate and meshes between the supply toothed disc and the return toothed disc to provide linkage between the two.

[0018] The clutch mechanism is located between the first drive shaft and the supply gear plate to coordinate the linkage between the two or release excess force. The clutch mechanism mainly includes a receiving groove, a spring force member, and a clutch inner plate. The receiving groove is recessed in the central area of ​​one side of the supply gear plate. The spring force member is coiled in the receiving groove and can elastically abut against the side wall of the receiving groove. The clutch inner plate protrudes from the first drive shaft to restrict the spring force member in the receiving groove and has at least one positioning protrusion that can connect the spring force member.

[0019] The limiting mechanism is disposed at the corresponding positions of the supply toothed disc and the filler to limit the supply toothed disc from rotating in one direction; wherein, the limiting mechanism includes at least one pawl protruding from the supply toothed disc and a limiting tooth disposed at the corresponding position of the filler.

[0020] According to the above structure, the rewind linkage unit is disposed on the ratchet disc at the end of the first drive shaft, and the rewind trigger unit is disposed on a ratchet segment with multiple teeth in a local area of ​​one side edge of the side guide groove; and in the engaged position, the rewind linkage unit is located in front of the rewind trigger unit, and in the open position, the rewind linkage unit is located behind the rewind trigger unit.

[0021] Furthermore, the retraction and release linkage unit is disposed on the toothed disc of the carrier plate, the driven unit is engaged with a toothed segment with multiple teeth on one side of the retraction and release linkage unit, and the retraction and release triggering unit is disposed in a partial area of ​​one side edge of the side guide groove and has multiple teeth, and when in contact with the retraction and release linkage unit, it is engaged with the other side of the retraction and release linkage unit relative to the driven unit; also, when the applicator head is in the release position, the driven unit abuts against the front end of the limiting groove, and when the applicator head is in the retraction position, the driven unit abuts against the rear end of the limiting groove.

[0022] Preferably, when in the engaged position, the distance between the rewind linkage unit and the rewind trigger unit is greater than the distance between the take-up linkage unit and the take-up trigger unit, so that when the rear housing moves relative to the front housing from the engaged position to the open position, the take-up linkage unit can first contact the take-up trigger unit and drive the applicator head to move backward, while the rewind linkage unit can contact and be driven by the rewind trigger unit when the applicator head moves backward or after it has moved to the retracted position, and rewind the film strip that is released after the applicator head is separated.

[0023] According to the above structure, the filler mainly includes a supply sleeve and a return sleeve. The supply sleeve is used to fit the first drive shaft and can move with the first drive shaft when fitted. The return sleeve is used to fit the second drive shaft and can move with the second drive shaft when fitted. The film tape passes around a supply port on the front side of the filler and is wound and fixed to the supply sleeve and the return sleeve at both ends respectively. Furthermore, the supply port may be provided with two extension arms for the film tape to pass over, and when the applicator head (31) moves back to the return position, it is located between the two extension arms.

[0024] The advantages of this invention are:

[0025] This invention, through the back-and-forth movement of the applicator head, avoids the problem of the film tape being pulled out or loosened when removing or installing the filler (with clip), thus facilitating the replacement operation. Furthermore, the automatic rewinding mechanism when the tape is opened ensures that the film tape does not become messy or loose during each replacement operation, further enhancing the convenience of the replacement operation.

[0026] The present invention, through the rewinding linkage mechanism, can also appropriately link the supply shaft and the recovery shaft to rewind synchronously when the installation is completed and pushed back. Through the speed ratio between the clutch mechanism and the gear plate, it can also ensure that the film tape at the front end of the inserted filler is taut. This ensures that the film tape can be tightly wound around the application head after each replacement operation, without the trouble of needing to adjust and reinstall multiple times. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention in a combined state;

[0029] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the present invention in the open state;

[0030] Figure 3 This is a component breakdown diagram of an embodiment of the present invention;

[0031] Figure 3a This is a magnified exploded view of a local component;

[0032] Figure 4 This is an exploded view of some components from another perspective of an embodiment of the present invention;

[0033] Figure 5 This is an exploded view of some components from another perspective of an embodiment of the present invention;

[0034] Figure 6a A schematic diagram of the applicator body without filler installed at the joint position;

[0035] Figure 6b for Figure 6a A schematic diagram of a structure containing filler;

[0036] Figure 7 To continue Figure 6a A schematic diagram of the structure that begins the movement toward the open position;

[0037] Figure 8a To continue Figure 7 A structural diagram illustrating the action of moving to the opening position;

[0038] Figure 8b for Figure 8a A schematic diagram of a structure containing filler;

[0039] Figure 9a To continue Figure 8a A structural diagram illustrating the action of moving to the opening position;

[0040] Figure 9b for Figure 9a A schematic diagram of a structure containing filler;

[0041] Figure 10a To continue Figure 9a A schematic diagram of the structure from the action to the open position;

[0042] Figure 10b for Figure 10a A three-dimensional diagram showing the infill material removed from the open position. Detailed Implementation

[0043] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0044] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Please refer to Figure 1 and Figure 2 As can be seen, the main components of the embodiments of the present invention include an applicator body 1 and a filler 8. The applicator body 1 includes a front shell 10 and a rear shell 20 that can be opened and joined relative to each other, and a space is formed inside for the filler 8 to be installed, so that the user can use it in the joined position and replace the filler 8 in the opened position.

[0046] The front housing 10 is strip-shaped with a hollow interior. It has a front opening 11 at the front end and a rearward-extending side guide groove 13 on one inner wall, as well as a slot 18 on another side wall. The rear housing 20 has a forward-extending carrier plate 21 corresponding to the side guide groove 13. The carrier plate 21 can slide within the side guide groove 13, allowing the rear housing 20 to move back and forth relative to the front housing 10 between an engaged position and an open position. In this embodiment, the front housing 10 has a retraction / expansion actuation unit 14 and a retraction / rewinding actuation unit 15 at appropriate positions before and after one side edge of the side guide groove 13. The retraction / expansion actuation unit 14 is a toothed segment composed of multiple protruding teeth, while the retraction / rewinding actuation unit 15 is a toothed segment composed of multiple protruding ratchet teeth. Furthermore, the rear housing 20 has a latch 27 at the position corresponding to the slot 18, allowing the two housings to engage and position each other in the engaged position.

[0047] The rear housing 20 is provided with an applicator head assembly 30 at the front section of the carrier plate 21, and is further provided with a second transmission member 60, a linkage gear 70, a first transmission member 40 and a supply gear 50. The first transmission member 40 and the second transmission member 60 are respectively provided with a first transmission shaft 41 and a second transmission shaft 61 for mounting and connecting the filler 8.

[0048] For example Figure 3 , Figure 4 , Figure 5As shown, the carrier plate 21 is provided with a first shaft post 22, a third shaft post 24, a second shaft post 23, and a fourth shaft post 25 from back to front. The first shaft post 22 is used for mounting and positioning the first transmission component 40, and the supply gear 50 is sleeved on the first transmission shaft 41. The second shaft post 23 is used for mounting and positioning the second transmission component 60. The third shaft post 24 is used for sleeved on the linkage gear 70, and the linkage gear 70 can be positioned by a positioning plate 63 protruding from the second transmission component 60. The fourth shaft post 25 is used for sleeved on a take-up and release linkage unit 28, and the take-up and release linkage unit 28 can be positioned by an extension section 321 of the applicator head assembly 30. Furthermore, the carrier plate 21 has a first recess 220 and a second recess 250 formed around the first shaft post 22 and the fourth shaft post 25, respectively, to accommodate a rewind linkage unit 42 and a take-up linkage unit 28 at the end of the first transmission member 40. The first recess 220 and the second recess 250 each have a notch formed on at least one side edge, so that when the carrier plate 21 slides in the side guide groove 13, the take-up linkage unit 28 and the rewind linkage unit 42 can contact and move with the take-up trigger unit 14 and the rewind trigger unit 15, respectively.

[0049] The applicator assembly 30 includes an applicator 31 and a receiving member 32. The applicator 31 is disposed at the front end of the receiving member 32 and can extend the front opening 11 at the engagement position, while the receiving member 32 extends rearward to form the extension section 321.

[0050] At the front section of the carrier plate 21, an upper limit protrusion 261 and a lower limit protrusion 262 are provided near the second recess 250 to form a limiting space between them for the extension section 321 to move back and forth. The carrier plate 21 is also provided with a limiting groove 263 parallel to the lower limit protrusion 262, which is concave or hollow, to accommodate a driven unit 322 protruding from the extension section 321. The limiting groove 263 is connected to the second recess 250 at approximately the center position, forming a notch on the other side of the second recess 250, so that the retraction linkage unit 28 can contact and link with the driven unit 322. By means of the retraction triggering unit 14, the retraction linkage unit 28 and the driven unit 322 respectively provided on the front housing 10, the carrier plate 21 and the applicator assembly 30, an applicator retraction mechanism can be formed that drives the applicator 31 to move back and forth between an extended position and a retracted position relative to the carrier plate 21 when it is opened or closed.

[0051] In this embodiment, the retraction linkage unit 28 is disposed on the toothed disc of the carrier plate 21, the retraction trigger unit 14 is disposed on the toothed segment of the guide groove 13 on the front housing 10, and the driven unit 322 is disposed on the toothed segment of the applicator head assembly 30. Through the meshing and linkage between them, when the rear housing 20 moves back and forth relative to the housing 10, it can drive the applicator head 31 to move back and forth. The driven unit 322 is kept meshed with one side of the retraction linkage unit 28, while when the retraction trigger unit 14 meshes with the retraction linkage unit 28, it meshes with the other side of the retraction linkage unit 28.

[0052] In a feasible embodiment, the applicator assembly 30 may have one side protrusion 33 at appropriate positions on both sides of the applicator 31, and the front housing 10 may have a positioning groove 12 at a corresponding position near the inner edge of the front opening 11, which can assist in supporting and positioning the applicator 31 when it extends forward out of the front opening 11. Furthermore, the front housing 10 may also have a cover 16 for covering the applicator 31 at the front opening 11, and the cover 16 can be connected to the outside of the front opening 11 via a slightly flexible cover pivot 17, so that it can be easily flipped up during use. Figure 6a As shown and the cover return Figure 1 As shown.

[0053] The first transmission component 40 is positioned on the first shaft 22 and can rotate around the first shaft 22. It mainly includes the first transmission shaft 41, the rewind linkage unit 42, and a clutch inner disc 43 protruding from both. The supply gear 50 is sleeved on the first transmission shaft 41 through a shaft hole 51 and is linked to it via a clutch mechanism. The clutch mechanism includes a receiving groove 52 disposed on the supply gear 50, a spring force member 55, and the clutch inner disc 43. The receiving groove 52 is recessed in the central area of ​​one side of the supply gear 50. The spring force member 55 is wound in the receiving groove 52 and can elastically abut against the side wall of the receiving groove 52. The clutch inner disc 43 protrudes from the first transmission shaft 41 to restrict the spring force member 55 in the receiving groove 52 and has at least one positioning protrusion 431 that can link the spring force member 55.

[0054] In a feasible embodiment, the spring force member 55 includes an inner peripheral portion and an outer peripheral portion. The inner peripheral portion is the part wound on the inner side, which can pass around the first drive shaft 41 and be positioned by the positioning protrusion 431. When the spring force member 55 or the first drive shaft 41 is driven, they can move together. The outer peripheral portion is the part wound on the outer side, which can abut against the side wall of the receiving groove 52 by elastic tension. This allows the spring force member 55 or the supply gear 50 to move together when they are driven, and when they do not move smoothly, the outer peripheral portion of the spring force member 55 can slide to release excess force and automatically adjust the engagement and disengagement between them. Furthermore, the positioning protrusion 431 may be further provided with an extension protrusion, and the receiving groove 52 may be recessed to allow the positioning protrusion 431 or the extension protrusion to extend into a channel 521, so that when the first drive shaft 41 and the supply gear 50 rotate relative to each other, the positioning protrusion 431 or the extension protrusion can remain in the channel 521 and move, and reliably be linked with the spring force member 55.

[0055] The second transmission component 60 is positioned on the second shaft 23 and can rotate around the second shaft 23. It mainly includes the second transmission shaft 61, a recovery gear 62, and a positioning plate 63 protruding from both. The linkage gear 70 is sleeved on the third shaft 24 and is positioned by the positioning plate 63 at the same plane as the supply gear 50 and the recovery gear 62, meshing between them to provide linkage between them. Thus, the supply gear 50, the linkage gear 70, and the recovery gear 62 constitute a linkage mechanism acting between the first transmission shaft 41 and the second transmission shaft 61.

[0056] In this embodiment, the filler 8 has an outer shell consisting of an upper shell 801 and a lower shell 802, and a feed port 83 is formed at the front end for the film tape 90 to be wound. The filler 8 mainly includes a supply sleeve 85 and a recovery sleeve 86 for the film tape 90 to be wound. The film tape 90 passes around the feed port 83 and is wound and fixed at both ends to the supply sleeve 85 and the recovery sleeve 86 respectively. The supply bushing 85 and the recycling bushing 86 are respectively provided with shaft holes 851 and 861 with concave or convex inner sides. The lower housing 802 is provided with a first mounting hole 81 and a second mounting hole 82 corresponding to one of the two shaft holes 851 and 861, so that when installed, the first drive shaft 41 and the second drive shaft 61 can pass through the first mounting hole 81 and the second mounting hole 82 respectively and be inserted into the two shaft holes 851 and 861. The first drive shaft 41 and the second drive shaft 61 are provided with at least one drive rib 411 and 611 protruding on the side, respectively, which engages and moves with the shaft holes 851 and 861. Furthermore, in this embodiment, the filler 8 is provided with two forward-extending extension arms 831 and 832 at the supply port 83, so that the film tape 90 can pass over the outside and front end of the two extension arms 831 and 832. When the applicator head 31 moves back to the retracted position, it can be located between the two extension arms 831 and 832, thereby maintaining the position of the film tape 90 when changing the filler 8 and reducing the problem of snagging with the applicator head 31.

[0057] In this embodiment, the rewind linkage unit 42 is a ratchet disc disposed at the end of the first transmission member 40, which can rotate together with the first transmission shaft 41 when driven; while the rewind trigger unit 15 is a ratchet segment disposed in a local area of ​​one side edge of the side guide groove 13, which can contact and be driven by the rewind trigger unit 15 when the rewind linkage unit 42 moves with the rear housing 20 relative to the front housing 10, thereby driving the first transmission shaft 41 to drive the filler 8 to rewind the loose film strip 90. By the rewind trigger unit 15 and the rewind linkage unit 42 respectively disposed on the front housing 10 and the carrier plate 21, a rewind linkage mechanism can be formed to drive the filler 8 to rewind the loose film strip 90 when opened or closed.

[0058] Furthermore, the supply toothed disc 50 and the filler 8 are each provided with at least one protruding pawl 53 and an annular restricting tooth 84 on their respective adjacent sides, forming a restricting mechanism to limit the unidirectional rotation of the supply toothed disc 50. Specifically, when the filler 8 is installed on the applicator body 1, the pawl 53 of the supply toothed disc 50 contacts the restricting tooth 84 of the filler 8. When the pawl 53 and the restricting tooth 84 are aligned, rotation of the supply toothed disc 50 is not prevented; however, when the pawl 53 and the restricting tooth 84 are aligned in opposite directions, rotation of the supply toothed disc 50 is prohibited.

[0059] In actual use, such as Figure 6a and Figure 6b As shown, the applicator body 1 is equipped with the filler 8, and the applicator head 31 is located at the front end of the extension position. After the user opens the cover 16, the applicator head 31 can be used to press against the film belt 90 for applicating. When the applicator moves, it naturally drives the supply sleeve 85 to rotate clockwise. The supply sleeve 85 drives the first drive shaft 41 to rotate clockwise. The first drive shaft 41 drives the supply gear 50 through the clutch mechanism. At this time, the pawl 53 and the limiting tooth 84 are aligned, so the supply gear 50 also rotates clockwise. Through the rotation of the supply gear 50, the empty film belt 90 after applicating can be retrieved synchronously by sequentially driving the connecting gear 70, the recovery gear 62, the second drive shaft 61 and the recovery sleeve 86.

[0060] When starting to change belts, if Figure 6a , Figure 6b , Figure 7 , Figure 8a , Figure 8b , Figure 9a , Figure 9b , Figure 10a , Figure 10b As shown, the rear housing 20 is operated relative to the front housing 10 from the engagement position as follows. Figure 6a and 6b Move backward to the open position as shown. Figure 10a and 10b As shown; when the rear housing 20 begins to move backward, as Figure 7 As shown, at this time, the retraction trigger unit 14 first drives the retraction linkage unit 28 to rotate, and at the same time, the retraction linkage unit 28 drives the driven unit 322 to drive the applicator head 31 to move backward; when the rear housing 20 continues to move backward, as Figure 8a and 8b As shown, at this time, the retraction linkage unit 28 moves with the carrier plate 21 to the tail end of the retraction trigger unit 14, and at the same time, the driven unit 322 abuts against the end of the limiting groove 263, causing the applicator head 31 to move backward to the retracted position and be located between the two extension arms 831 and 832, completely disengaged from the film tape 90; when the rear housing 20 continues to move backward, after the retraction linkage unit 28 disengages from the retraction trigger unit 14, the applicator head 31 no longer moves relative to the carrier plate 21, and when the rewind linkage unit 42 contacts the rewind trigger unit 15, that is, as Figure 9a and 9b As shown, at this time, the rewinding actuation unit 15 drives the rewinding linkage unit 42 to rotate counterclockwise, and the first transmission shaft 41 also rotates counterclockwise along with the rewinding linkage unit 42, which in turn drives the supply bushing 85 to rotate counterclockwise as well. The supply gear 50 is restricted by the restricting pawl 53 and the restricting teeth 84 of the limiting mechanism.呈 The second drive shaft 61 and the recovery sleeve 86 do not rotate in the reverse direction. Therefore, the supply sleeve 85 can rewind the loose film strip 90 by rotating counterclockwise. When the rewind linkage unit 42 is disengaged from the rewind trigger unit 15, the film strip 90 outside the supply opening 83 can be rewound and tightened. Figure 10b As shown; when the rear housing 20 continues to move backward to the open position, as Figure 10a As shown, the retraction linkage unit 28 is in contact with the rewind actuation unit 15. Since the driven unit 322 abuts against the end of the limiting groove 263, the retraction linkage unit 28 cannot continue to rotate, thus forming a blockage between them. This constitutes a mechanism to prevent the carrier plate 21 from detaching from the side guide groove 13. In this open position, the user can easily remove and insert a new filler 8. Figure 10b As shown.

[0061] The operation of inserting filler 8 and pushing back the housing 20 is the reverse process described above. The only difference is that when the rewind linkage unit 42 contacts the rewind trigger unit 15, the rewind linkage unit 42 and the first drive shaft 41 rotate clockwise. At this time, since the pawl 53 and the limiting tooth 84 are aligned, the supply toothed disc 50 will sequentially drive the linkage toothed disc 70, the rewind toothed disc 62, the second drive shaft 61, and the rewind sleeve 86 to rotate. When the first drive shaft 41 drives the supply sleeve 85 to rotate clockwise to release the film belt 90, the second drive shaft 61 also rotates synchronously to rewind the film belt 90, keeping the film belt 90 taut. Based on the slightly higher speed ratio of rewind to supply and the clutch mechanism adjustment, after the application head 31 moves forward and is released, the film belt 90 can be taut and wrapped around the application head 31. The replacement operation can be easily completed in one go without repeated removal and adjustment.

[0062] The various embodiments described in this specification are presented 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 description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A film applicator for easy replacement of a filler, comprising an applicator body (1) for mounting a filler (8), including a front housing (10) and a rear housing (20) that can be opened and closed relative to each other, the front housing (10) including a front opening (11) and a side guide groove (13), the rear housing (20) including a carrier plate (21) that can slide relative to each other in the side guide groove (13), such that the rear housing (20) can move relative to the front housing (10) between a closed position and an open position, so that the filler (8) can be replaced in the open position; wherein, The carrier plate (21) is provided with an applicator (31) that can extend out of the front opening (11) at the joint position, and a first drive shaft (41) and a second drive shaft (61) for mounting and connecting the filler (8), and the first drive shaft (41) can be linked to the second drive shaft (61) through a linkage mechanism. Its features are: The applicator (31) is mounted on a receiving member (32) that can move back and forth relative to the carrier plate (21), and the receiving member (32) is provided with a driven unit (322); The carrier plate (21) has a retraction linkage unit (28) on one side of the driven unit (322) to link the driven unit (322) so that the receiving member (32) and the applicator head (31) move back and forth relative to the carrier plate (21) between a release position and a retraction position; The front housing (10) is provided with a retraction trigger unit (14) so ​​that the retraction linkage unit (28) can contact and be driven by the retraction trigger unit (14) when it moves with the rear housing (20); When the rear housing (20) moves from the engagement position to the opening position and the retraction linkage unit (28) contacts the retraction trigger unit (14), the retraction linkage unit (28) can be driven by the retraction trigger unit (14) and linked to the driven unit (322), so that the receiving member (32) and the application head (31) can move backward relative to the carrier plate (21) towards the retraction position, so that the application head (31) can separate from the film strip (90) of the filler (8); The applicator body (1) also includes a rewinding linkage mechanism, which includes: A rewind linkage unit (42) is provided at one end of the first drive shaft (41) away from the filler (8) to drive the first drive shaft to rotate together; A rewinding actuation unit (15) is provided on the front housing (10) so that the rewinding linkage unit (42) can contact and be driven by the rewinding actuation unit (15) when the rear housing (20) moves; When the rear housing (20) moves from the engagement position to the opening position and the rewind linkage unit (42) contacts the rewind trigger unit (15), the rewind linkage unit (42) can be driven by the rewind trigger unit (15) and drive the first drive shaft (41) to rotate, so that the first drive shaft (41) can drive the filler (8) to rewind the loose film strip (90).

2. The film applicator for easy replacement of the filler as described in claim 1, characterized in that: The applicator head (31) is located at the front end of the receiving member (32). The receiving member (32) includes a rearwardly extending extension section (321) and the driven unit (322) disposed on the extension section (321). The carrier plate (21) is provided with at least one limiting protrusion and a limiting groove (263). The limiting protrusion is used to restrict the extension section (321) from moving back and forth relative to the carrier plate (21), and the limiting groove (263) is used to accommodate the driven unit (322).

3. The film applicator for easy replacement of the filler as described in claim 2, characterized in that: The retraction and release linkage unit (28) is disposed on the toothed disc of the carrier plate (21). The driven unit (322) meshes with the toothed segment on one side of the retraction and release linkage unit (28). The retraction and release triggering unit (14) is disposed in a local area of ​​one side edge of the side guide groove (13) and is located on the toothed segment of the retraction and release linkage unit (28) on the other side relative to the driven unit (322). When the applicator head (31) is in the release position, the driven unit (322) abuts against the front end of the limiting groove (263). When the applicator head (31) is in the retraction position, the driven unit (322) abuts against the rear end of the limiting groove (263).

4. The film applicator for easy replacement of the filler as described in claim 1, characterized in that: The rewind linkage unit (42) is located on the toothed disc at the end of the first drive shaft (41), and the rewind trigger unit (15) is located on the toothed segment of a local area on one side edge of the side guide groove (13). When in the engaged position, the rewind linkage unit (42) is located in front of the rewind trigger unit (15), and when in the open position, the rewind linkage unit (42) is located behind the rewind trigger unit (15).

5. The film applicator for easy replacement of the filler as described in claim 4, characterized in that: in, At the engagement position, the distance between the rewind linkage unit (42) and the rewind trigger unit (15) is greater than the distance between the take-up linkage unit (28) and the take-up trigger unit (14), so that when the rear housing (20) moves from the engagement position to the open position relative to the front housing (10), the take-up linkage unit (28) can first contact the take-up trigger unit (14) and drive the applicator head (31) to move backward, while the rewind linkage unit (42) can contact and be driven by the rewind trigger unit (15) when the applicator head (31) moves backward or after it moves to the retracted position, and rewind the film strip (90) that is released after the applicator head (31) is separated.

6. The film applicator for easy replacement of the filler as described in claim 1, characterized in that: The linkage mechanism includes: A supply gear disc (50) is fitted onto the first drive shaft (41) and can be linked with the first drive shaft (41); A recovery gear disc (62) is disposed at one end of the second drive shaft (61) away from the filler (8) to drive the second drive shaft (61) to rotate together; as well as A connecting gear disc (70) is disposed between the supply gear disc (50) and the recovery gear disc (62), and meshes with the supply gear disc (50) and the recovery gear disc (62) respectively.

7. The film applicator for easy replacement of the filler as described in claim 6, characterized in that: The first drive shaft (41) is connected to the supply gear disc (50) via a clutch mechanism, and the clutch mechanism includes: A receiving groove (52) is recessed in the central area of ​​one side of the supply toothed disc (50); A spring force member (55) is wound in the receiving groove (52) and can elastically abut against the side wall of the receiving groove (52); And a clutch inner disc (43) protrudes from the first drive shaft (41) to restrict the spring force member (55) in the receiving groove (52), and is provided with at least one positioning protrusion (431) that can connect to the spring force member (55).

8. The film applicator for easy replacement of the filler as described in claim 7, characterized in that: The receiving groove (52) is recessed on the side of the supply toothed disc (50) away from the filler (8), and the supply toothed disc (50) is connected to a limiting mechanism on the side closer to the filler (8) to limit the unidirectional rotation of the supply toothed disc (50). The limiting mechanism includes at least one pawl (53) protruding from the supply toothed disc (50) and a limiting tooth (84) disposed on the filler (8) corresponding to the position of the pawl (53).

9. The film applicator for easy replacement of the filler as described in claim 1, characterized in that: The filler (8) includes a supply sleeve (85) and a return sleeve (86). The supply sleeve (85) is used to fit the first drive shaft (41) and can move with the first drive shaft (41) when fitted. The return sleeve (86) is used to fit the second drive shaft (61) and can move with the second drive shaft (61) when fitted. The film tape (90) passes around a supply port (83) on the front side of the filler (8) and is wound and fixed at both ends to the supply sleeve (85) and the return sleeve (86).

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