CN216993704U - Film applicator capable of automatically rolling back when tape is changed and opened - Google Patents

Abstract

The utility model provides a film applicator capable of automatically rolling back when a tape is changed and opened, which comprises an applicator body for installing a filling body, a coating head, a first transmission shaft, a second transmission shaft and the like, wherein the applicator body comprises a front shell and a rear shell which move relatively by a side guide groove and a carrier plate, and the coating head, the first transmission shaft and the second transmission shaft can slide out along with the carrier plate; the utility model can automatically link the film belt which is unwound by the rewinding when the user opens the film belt for replacement, so that the film belt can keep a tightening state, thereby increasing the convenience during replacement operation.

Description

Film applicator capable of automatically rolling back when tape is changed and opened

Technical Field

The utility model relates to the field of stationery, in particular to a film applicator which can be conveniently and automatically rolled back when a tape is replaced and opened.

Background

The present invention relates to a film applicator, which is commonly called a correction tape or a standing tape, and is a stationery product commonly used for covering errors and providing duplication correction, wherein the known products in the market are various, such as a disposable film applicator which can be discarded after being exhausted, or a replaceable film applicator which can be used repeatedly by keeping a shell and a replaceable tape clip, and the existing products are mainly replaceable, so as to reduce the proportion of the material of the discarded part due to environmental protection.

The replaceable film applicator can form a plurality of different styles according to the positions of the internal gear set and the applicator head, wherein the design of the gear set, the applicator head and other components arranged on the body (namely, the part reserved along with the replacement of the belt clip) can be said to be the style with least waste materials; the main structure of the film applicator comprises a front shell and a rear shell which can be opened in a sliding way relatively, and a mechanism part (such as a gear set, an application head and the like) assembled on the rear shell, so that a user can slide the mechanism part out of the shell subsequently when replacing the film applicator, take off an old filling body (namely a belt clamp which is worn out) and then load the old filling body into a new filling body, and push back the old filling body to complete the replacing operation.

However, in the current film applicators of this type, the replacement process is often inconvenient, for example, when the old filling body is taken out, a large amount of empty tapes in the old filling body can be carelessly caught due to the loose tape body, which causes troubles when the old filling body is discarded; for example, when a new filling body is filled, the structure of the existing product inevitably touches the film belt during installation to cause the degree of tightness to change, so that the film belt cannot be tightly wound on the smearing head (namely, the film belt is loose outside the smearing head) after the rear shell is pushed in, and therefore, a user often needs to adjust and install the film belt for multiple times to normally use, and the problem that the smearing film is adhered to the periphery carelessly is inevitably caused in the process of adjusting and installing for multiple times; the above mentioned problems are the troubles and problems that may occur when the current products are used, and need to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a film applicator capable of automatically rewinding when a tape is replaced and opened, and aims to solve the defects of the prior art, facilitate replacement operation and realize a mode that a film tape can be automatically rewound when the tape is replaced and opened every time.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a film applicator capable of automatically rolling back when a tape is changed and opened comprises an applicator body for installing a filling body, wherein the applicator body comprises a front shell and a rear shell which can be relatively opened and combined, the front shell comprises a front opening and a side guide groove, the rear shell comprises a carrier plate which can relatively slide in the side guide groove, and the rear shell can move between a combination position and an opening position relative to the front shell so as to replace the filling body when in the opening position; wherein the carrier plate is provided with a smearing head which can extend out of the front opening at the combination position, and a first transmission shaft and a second transmission shaft which are used for installing and connecting the filling body, and the first transmission shaft can drive the second transmission shaft through a linkage mechanism;

the method is characterized in that:

a rewinding linkage unit is arranged at one end of the first transmission shaft away from the filling body and is used for linking the first transmission shaft to rotate together;

the front shell is provided with a rewinding touch unit which is used for contacting and being driven by the rewinding touch unit when the rewinding linkage unit moves along with the rear shell;

when the rear shell moves from the combination position to the opening position and the rewinding linkage unit contacts the rewinding touch unit, the rewinding linkage unit can be driven by the rewinding touch unit and can be linked with the first transmission shaft to rotate, so that the first transmission shaft can drive the filling body to rewind the loosened film belt.

Namely:

in order to overcome the troubles of the conventional product replacement operation, the main improvement of the present invention comprises an applicator head retracting mechanism and a rewinding linkage mechanism provided in the applicator body.

Wherein, the smearing head retracting and releasing mechanism mainly comprises a driven unit, a retracting and releasing linkage unit and a retracting and releasing touch unit; the driven unit is arranged in a smearing head component and is used for driving the smearing head to move back and forth between a release position and a retraction position when being driven, specifically, the smearing head component comprises the smearing head and a receiving piece, the smearing head is arranged at the front end of the receiving piece, the driven unit is arranged on an extension section of the receiving piece extending backwards, and the smearing head component can move back and forth relative to the carrier plate through the extension section; the retractable linkage unit is arranged on the carrier plate and is used for linking the driven unit when being driven, specifically, the carrier plate is provided with at least one limiting convex part and a concave or hollow limiting groove at proper positions around the carrier plate, the limiting convex part is used for providing and limiting the spatial position of the extending section relative to the carrier plate, and the limiting groove is used for accommodating the driven unit and limiting the driven unit to move only within the range of the limiting groove when being driven; the retraction touch unit is arranged at a proper position of the front shell, and is mainly at a position which can be contacted when the retraction linkage unit moves along with the rear shell relative to the front shell, so that the retraction linkage unit can be driven by the retraction touch unit when moving and contacting, and then is linked to the driven unit. Therefore, when the rear shell moves from the combination position to the opening position and the retractable linkage unit is contacted with the retractable trigger unit, the retractable linkage unit can be driven by the retractable trigger unit and can be linked with the driven unit, the receiving piece and the smearing head can move backwards relative to the carrier plate to the withdrawing position, the smearing head can be completely separated from the film tape in a backward retracting manner, and the problem that the film tape is dragged when the filling body is replaced is solved.

The rewinding linkage mechanism mainly comprises a rewinding linkage unit and a rewinding touch unit; the rewinding linkage unit is disposed at an end of the first transmission shaft away from the filling body, and is used for linking the first transmission shaft to rotate together when being driven; the rewinding touch unit is arranged at a proper position of the front shell, and is mainly at a position which can be contacted when the rewinding linkage unit moves along with the rear shell relative to the front shell, so that when the rewinding linkage unit is contacted with the front shell in the moving process, the rewinding linkage unit can be driven by the rewinding touch unit, and further, the first transmission shaft is linked to drive the filling body to rewind the loosened film strip. When the rear shell moves from the combination position to the opening position and the rewinding linkage unit is in contact with the rewinding touch unit, the rewinding linkage unit can be driven by the rewinding touch unit and can link the first transmission shaft to rotate, so that the first transmission shaft can drive the film belt which is unwound from the filling body to be rewound, and the film belt can not be in a loose state when being opened every time, and a user can conveniently replace the film belt.

Furthermore, the applicator body of the present invention further includes mechanisms such as linkage, clutch, and restriction. Wherein the linkage mechanism mainly comprises a supply fluted disc, a recovery fluted disc and a linkage fluted disc; the supply gear is sleeved on the first transmission shaft and can be linked with the first transmission shaft; the recycling gear is disposed at an end of the second transmission shaft away from the filler and is capable of rotating with the second transmission shaft; the linked fluted disc is arranged on the carrier plate and meshed between the supply fluted disc and the recovery fluted disc for providing linkage between the supply fluted disc and the recovery fluted disc.

The clutch mechanism is disposed between the first transmission shaft and the supply gear disc for coordinating the linkage between the first transmission shaft and the supply gear disc or releasing the redundant acting force; wherein, the clutch mechanism mainly comprises an accommodating groove, a spring force piece and a clutch inner disc; the holding trough is concavely arranged in the central area of one side surface of the supply fluted disc; the spring force element is arranged in the accommodating groove in a winding way and can elastically abut against the side wall of the accommodating groove; the clutch inner disc is protruded on the first transmission shaft for limiting the spring force member in the accommodation groove, and at least one positioning protrusion capable of linking the spring force member is protruded.

The limiting mechanism is disposed at the corresponding position of the supply gear disc and the filler for limiting the supply gear disc to rotate in one direction; wherein the limiting mechanism comprises at least one pawl protruding from the supply gear disc and a limiting tooth portion disposed at a corresponding position of the packing body.

According to the above structure, the rewinding linkage unit is arranged on the ratchet disc at the end of the first transmission shaft, and the rewinding trigger unit is arranged on the local area of one side edge of the side guide slot and is provided with a ratchet section with a plurality of teeth; and in the combination position, the rewinding linkage unit is positioned in front of the rewinding triggering unit, and in the opening position, the rewinding linkage unit is positioned behind the rewinding triggering unit.

Furthermore, the retractable linkage unit is arranged on a fluted disc of the carrier plate, the driven unit is meshed with a tooth section with a plurality of teeth on one side of the retractable linkage unit, and the retractable trigger unit is arranged on a local area of one side edge of the side guide groove and is meshed with the other side of the retractable linkage unit relative to the driven unit when contacting with the retractable linkage unit; when the smearing head is located at the releasing position, the driven unit is abutted against the front end of the limiting groove, and when the smearing head is located at the retracting position, the driven unit is abutted against the rear end of the limiting groove.

Preferably, when the film tape is at the combining position, the distance between the rewinding linkage unit and the rewinding triggering unit is greater than the distance between the winding linkage unit and the winding triggering unit, so that when the rear housing moves from the combining position to the opening position relative to the front housing, the winding linkage unit can firstly contact the rewinding linkage unit and drive the smearing head to move backwards, and the rewinding linkage unit can contact and be driven by the rewinding linkage unit when or after the smearing head moves backwards to the retracting position, so as to rewind the loosened film tape after the smearing head is separated.

According to the above structure, the filling body mainly comprises a supply shaft sleeve and a recovery shaft sleeve, wherein the supply shaft sleeve is used for sleeving the first transmission shaft and can be linked with the first transmission shaft during sleeving, and the recovery shaft sleeve is used for sleeving the second transmission shaft and can be linked with the second transmission shaft during sleeving; the film belt is wound around a belt supply opening at the front side of the filling body, and two ends of the film belt are respectively wound and fixed on the supply shaft sleeve and the recovery shaft sleeve; further, the tape supply port may be provided with a first extension arm and a second extension arm around which the film tape passes and which are located between the first extension arm and the second extension arm when the applicator head (31) is retracted to the retracted position.

The utility model has the advantages that:

the utility model can avoid the problem that the film belt is hooked or triggered to be loosened when the filling body (belt clip) is taken down or installed by the way that the coating head moves back and forth to be retracted, thereby achieving the effect of convenient replacement operation; the film tape can not be in a messy and loose state during each replacement operation by means of automatic rewinding when the tape replacement is opened, and convenience during the replacement operation can be further enhanced.

The utility model can synchronously roll the supply shaft and the recovery shaft by proper linkage through the rewinding linkage mechanism when the installation is completed and the pushing-back is combined, and can ensure the tensioning state of the film belt at the front end of the filled filler through the speed ratio between the clutch mechanism and the fluted disc, so that the film belt can be reliably and tightly wound on the smearing head after each replacement operation is completed without the troubles of multiple adjustment and repeated installation.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of an embodiment of the present invention in a coupled state;

FIG. 2 is a perspective view of the embodiment of the present invention in an open state;

FIG. 3 is an exploded view of an embodiment of the present invention;

FIG. 3a is an enlarged exploded view of a portion of the assembly;

FIG. 4 is an exploded view of a portion of another perspective of an embodiment of the present invention;

FIG. 5 is an exploded view of a portion of another embodiment of the present invention;

FIG. 6a is a schematic view of the applicator body in the engaged position without the filling body installed;

FIG. 6b is a schematic view of the structure of FIG. 6a with the filling member;

FIG. 7 is a schematic view of the structure of FIG. 6a beginning to move to the open position;

FIG. 8a is a schematic view of the structure following the movement of FIG. 7 to the opened position;

FIG. 8b is a schematic view of the structure of FIG. 8a with the filling body;

FIG. 9a is a schematic view of the structure of FIG. 8a moving to the open position;

FIG. 9b is a schematic view of the structure of FIG. 9a with the filling body;

FIG. 10a is a schematic view of the structure following the movement of FIG. 9a to an open position;

fig. 10b is a perspective view of fig. 10a with the filling body removed in an open position.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor. In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific examples.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the utility model and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, it can be seen that the present invention mainly comprises an applicator body 1 and a filling body 8, the applicator body 1 includes a front housing 10 and a rear housing 20 capable of being opened and combined relatively, and a space for installing the filling body 8 is formed inside, so that a user can use the applicator body in a combined position, and replace the filling body 8 in an opened position.

The front case 1 is strip-shaped, and has a hollow interior, a front opening 11 is opened at the front end, a side guide slot 13 extending backward is provided on one side inner wall, and a slot 18 is provided on one side wall; the rear housing 20 has a carrier 21 extending forward and corresponding to the side slots 13, and the carrier 21 can slide in the side slots 13, so that the rear housing 20 can move back and forth between a coupling position and an opening position relative to the front housing 10. In this embodiment, the front housing 1 is provided with a retractable touch unit 14 and a rewinding touch unit 15 at the front and rear proper positions of one side edge of the side guide slot 13, the retractable touch unit 14 is a tooth segment formed by a plurality of convex teeth, and the rewinding touch unit 15 is a tooth segment formed by a plurality of convex ratchets; in addition, a buckle 27 is disposed at a position of the rear housing 20 corresponding to the slot 18 for providing a location for the two to be mutually engaged when in the combining position.

The rear housing 20 is provided with a smearing head assembly 30 at a front section of the carrier plate 21, and is further provided with a second transmission member 60, a driving gear 70, a first transmission member 40 and a supply gear 50, respectively, and the first transmission member 40 and the second transmission member 60 are provided with a first transmission shaft 41 and a second transmission shaft 61 for installing and combining the filling body 8, respectively.

As shown in fig. 3, 4 and 5, the carrier 21 is respectively provided with a first shaft 22, a third shaft 24, a second shaft 23 and a fourth shaft 25 from back to front; the first shaft post 22 is used for mounting and positioning the first transmission member 40, the supply fluted disc 50 is sleeved on the first transmission shaft 41, the second shaft post 23 is used for mounting and positioning the second transmission member 60, the third shaft post 24 is used for sleeved connection of the linkage fluted disc 70, and can position the linkage fluted disc 70 through a positioning disc 63 protruded from the second transmission member 60, and the fourth shaft post 25 is used for sleeved connection of a retraction linkage unit 28, and can position the retraction linkage unit 28 through an extending section 321 of the coating head assembly 30. In addition, the carrier 21 forms a first concave portion 220 and a second concave portion 250 recessed inwards around the first shaft column 22 and the fourth shaft column 25, respectively, for accommodating a rewinding linkage unit 42 and the winding and unwinding linkage unit 28 at the end of the first transmission member 40, the first concave portion 220 and the second concave portion 250 form a notch at least one side edge, respectively, so that when the carrier 21 slides in the side guide 13, the winding and unwinding linkage unit 28 and the rewinding linkage unit 42 can contact and link with the winding and unwinding linkage unit 14 and the rewinding linkage unit 15, respectively.

The smearing head assembly 30 includes a smearing head 31 and a receiving member 32, the smearing head 31 is disposed at the front end of the receiving member 32 and can extend out of the front opening 11 at the combining position, and the receiving member 32 extends backward to form the extending section 321.

An upper limit protrusion 261 and a lower limit protrusion 262 are disposed near the second recess 250 at the front section of the carrier 21 for forming a limit space for the extension 321 to move forward and backward therebetween; the carrier 21 further has a limiting groove 263 parallel to the lower limiting protrusion 262, which is recessed or hollow for accommodating a driven unit 322 protruded from the extending section 321; the limiting groove 263 is connected to the second concave portion 250 at about the central position, and forms a concave gap at the other side of the second concave portion 250, so that the retraction linkage unit 28 can contact and link with the driven unit 322. By means of the retractable trigger unit 14, the retractable linkage unit 28 and the driven unit 322 respectively disposed on the front housing 10, the carrier plate 21 and the dauber assembly 30, a dauber pick-up mechanism can be formed, which drives the dauber 31 to move back and forth between a release position and a retraction position relative to the carrier plate 21 when being opened or combined.

In this embodiment, the retracting and releasing linkage unit 28 is disposed on the gear disc of the carrier plate 21, the retracting and releasing trigger unit 14 is disposed on the gear section of the side guide slot 13 of the front housing 10, and the driven unit 322 is disposed on the gear section of the applicator head assembly 30, so that the rear housing 20 can be linked to the applicator head 31 to move back and forth when moving back and forth relative to the housing 10 by the meshing linkage therebetween. The passive unit 322 is engaged with one side of the retraction linkage unit 28, and is engaged with the other side of the retraction linkage unit 28 when the retraction trigger unit 14 is engaged with the retraction linkage unit 28.

In a practical embodiment, the coating head assembly 30 can be provided with a side protrusion 33 at a suitable position on both sides of the coating head 31, and the front housing 10 can be provided with a positioning groove 12 at a corresponding position near the inner side edge of the front opening 11, so as to assist in supporting and positioning the coating head 31 when the coating head 31 extends out of the front opening 11. In addition, the front case 10 can be further provided with a cover 16 for covering the applicator head 31 at the front opening 11, and the cover 16 can be connected to the side outside the front opening 11 via a slightly elastic cover pivot 17 so as to be easily turned up and closed back as shown in fig. 6a and fig. 1 when in use.

The first transmission member 40 is positioned on the first shaft 22, can rotate around the first shaft 22, and mainly includes the first transmission shaft 41, the rewinding linkage unit 42, and a clutch inner 43 protruding from the first transmission shaft and the rewinding linkage unit; the supply gear 50 is sleeved on the first transmission shaft 41 through a shaft hole 51 and linked with each other through a clutch mechanism. The clutch mechanism includes a receiving groove 52 disposed on the supply fluted disc 50, a spring member 55 and the clutch inner disc 43, the receiving groove 52 is concavely disposed in a central region of one side of the supply fluted disc 50, the spring member 55 is disposed in the receiving groove 52 in a winding manner and can elastically abut against a side wall of the receiving groove 52, the clutch inner disc 43 is protrudingly disposed on the first transmission shaft 41 for limiting the spring member 55 in the receiving groove 52, and at least one positioning protrusion 431 capable of linking the spring member 55 is protrudingly disposed.

In a practical embodiment, the spring member 55 includes an inner peripheral portion and an outer peripheral portion, the inner peripheral portion is wound around the inner portion and can be positioned by the positioning protrusion 431, when the spring member 55 or the first transmission shaft 41 is driven, the inner peripheral portion can be coupled with each other, and the outer peripheral portion is wound around the outer portion and can abut against the sidewall of the accommodating groove 52 by using elastic tension, so as to be coupled with each other when the spring member 55 or the supply fluted disc 50 is driven, and can generate a slip on the outer peripheral portion of the spring member 55 when the spring member 55 or the supply fluted disc 50 is not coupled smoothly, thereby releasing an excessive acting force and automatically adjusting the effect of coupling and uncoupling. Furthermore, the positioning protrusion 431 may further be provided with an extending protrusion, and the receiving groove 52 may be provided with a groove 521 for the positioning protrusion 431 or the extending protrusion to extend into, so that when the first transmission shaft 41 and the supply fluted disc 50 rotate relatively, the positioning protrusion 431 or the extending protrusion can keep moving in the groove 521, and is positively linked with the spring member 55.

The second transmission member 60 is positioned on the second shaft 23, can rotate around the second shaft 23, and mainly includes the second transmission shaft 61, a recovery toothed disc 62 and the positioning disc 63 protruding from the second transmission shaft and the recovery toothed disc. The linking gear 70 is sleeved on the third shaft 24 and is limited by the positioning plate 63 to be positioned at the same plane as the supply gear 50 and the recovery gear 62, and engaged therebetween for linking the two; thus, the supply gear 50, the interlocking gear 70 and the recovery gear 62 constitute an interlocking mechanism acting between the first transmission shaft 41 and the second transmission shaft 61.

In this embodiment, the filling body 8 has a housing composed of an upper shell 801 and a lower shell 802, and a tape supply opening 83 for winding the film tape 90 is formed at the front end; the filling body 8 mainly includes a supply sleeve 85 and a recovery sleeve 86 for winding a film strip 90, and the film strip 90 is wound around the strip supply port 83 and is wound and fixed at two ends of the supply sleeve 85 and the recovery sleeve 86 respectively. Wherein, the supply shaft sleeve 85 and the recovery shaft sleeve 86 are respectively provided with shaft holes 851 and 861 with inner sides thereof being concave or convex, the lower housing 802 is provided with a first mounting hole 81 and a second mounting hole 82 respectively corresponding to the two shaft holes 851 and 861, for mounting and combining, the first transmission shaft 41 and the second transmission shaft 61 can respectively pass through the first mounting hole 81 and the second mounting hole 82 and be inserted and combined in the two shaft holes 851 and 861, and at least one transmission convex rib 411 and 611 respectively protruding from the sides of the first transmission shaft 41 and the second transmission shaft 61 are engaged and linked with the shaft holes 851 and 861. Further, the filling body 8 of the embodiment is provided with a first extension arm 831 and a second extension arm 832 at the position of the tape supply opening 83, so that the film tape 90 can bypass the outer sides and the front ends of the first extension arm 831 and the second extension arm 832, and when the smearing head 31 moves back to the retracted position, the film tape can be located in the first extension arm 831 and the second extension arm 832, so as to maintain the position that the film tape 90 bypasses when the filling body 8 is replaced, and reduce the problem of hooking with the smearing head 31.

In this embodiment, the rewinding linkage unit 42 is disposed on a ratchet disc at an end of the first transmission member 40, and is driven to rotate together with the first transmission shaft 41; the rewinding activating unit 15 is disposed on the ratchet section of a local area of a side edge of the side guiding slot 13, and is used for contacting and being driven by the rewinding activating unit 15 when the rewinding activating unit 42 moves along with the rear housing 20 relative to the front housing 10, so as to activate the first transmission shaft 41 to drive the film strip 90 of the filling member 8 to rewind and release. By the rewinding activating unit 15 and the rewinding linkage unit 42 respectively disposed on the front housing 10 and the carrier 21, a rewinding linkage mechanism for driving the filling member 8 to rewind and release the film strip 90 when opening or combining can be formed.

Further, the supply gear 50 and the filling member 8 are respectively provided with at least one protruding pawl 53 and an annular limiting tooth portion 84 on the side close to each other, so as to form a limiting mechanism for limiting the supply gear 50 to rotate in one direction. Wherein when the filling body 8 is mounted on the applicator body 1, the pawl 53 of the supply toothed disc 50 contacts the limiting toothed portion 84 of the filling body 8, and when the pawl 53 is in the forward direction with respect to the limiting toothed portion 84, the rotation of the supply toothed disc 50 is not prevented, and when the pawl 53 is in the reverse direction with respect to the limiting toothed portion 84, the rotation of the supply toothed disc 50 is inhibited.

In actual use, as shown in fig. 6a and 6b, the applicator body 1 is provided with the filling body 8, the applicator head 31 is located at the front end discharging position, after the user opens the cover 16, the user can use the applicator head 31 to press the film belt 90 for applying, during the applying movement, the supply shaft sleeve 85 is naturally driven to rotate the supply coil clockwise, the supply shaft sleeve 85 is connected with the first transmission shaft 41 to rotate clockwise, the first transmission shaft 41 is connected with the supply fluted disc 50 through the clutch mechanism, at this time, the pawl 53 and the limiting toothed portion 84 are in the same direction, so the supply fluted disc 50 also rotates clockwise, and through the rotation of the supply fluted disc 50, the connected fluted disc 70, the recovery fluted disc 62, the second transmission shaft 61 to the recovery shaft sleeve 86 can be sequentially connected, and the applied empty film belt 90 can be synchronously recovered.

When the tape is to be replaced, as shown in fig. 6a, 6b, 7, 8a, 8b, 9a, 9b, 10a and 10b, the rear housing 20 is operated to move back relative to the front housing 10 from the engaged position shown in fig. 6a and 6b to the open position shown in fig. 10a and 10 b; when the rear housing 20 starts to move backward, as shown in fig. 7, at this time, the retractable trigger unit 14 first drives the retractable linkage unit 28 to rotate, and the retractable linkage unit 28 links the driven unit 322 to drive the smearing head 31 to move backward; when the rear housing 20 continues to move backward, as shown in fig. 8a and 8b, at this time, the retracting and releasing linkage unit 28 moves to the tail end of the retracting and releasing trigger unit 14 along with the carrier plate 21, and simultaneously links the driven unit 322 to abut against the tail end of the limiting groove 263, and allows the applying head 31 to move backward to the retracting position, and is located in the first extending arm 831 and the second extending arm 832, and completely separated from the film strip 90; when the rear housing 20 further moves backward, after the retraction linkage unit 28 disengages from the retraction trigger unit 14, the smearing head 31 no longer moves relative to the carrier plate 21, and when the rewind linkage unit 42 contacts with the rewind trigger unit 15, as shown in fig. 9a and 9b, at this time, the rewind trigger unit 15 drives the rewind linkage unit 42 to rotate counterclockwise, the first transmission shaft 41 also rotates counterclockwise along with the rewind linkage unit 42, the supply shaft sleeve 85 also rotates counterclockwise, the supply fluted disc 50 does not rotate in the reverse direction due to the limiting pawl 53 of the limiting mechanism and the limiting tooth part 84, the clutch mechanism releases the acting force, and the second transmission shaft 61 and the rewind shaft sleeve 86 do not rotate as well, so that the supply shaft sleeve 85 rotates counterclockwise to rewind the loose film 90, when the rewind linkage unit 42 disengages from the rewind trigger unit 15, the film strip 90 outside the wearing opening 83 can be in a state of being rolled back and tensioned as shown in fig. 10 b; when the rear housing 20 moves back to the open position again, as shown in fig. 10a, the retraction linkage unit 28 contacts the rewinding triggering unit 15, and the driven unit 322 abuts against the end of the limiting groove 263, so that the retraction linkage unit 28 cannot rotate continuously, and therefore a block is formed between them, thereby forming a mechanism for preventing the carrier plate 21 from coming off the side guiding groove 13, and in the open position, a user can easily take out and load a new filling body 8 as shown in fig. 10 b.

The operation of loading the filler 8 into the rear housing 20, i.e. the above-mentioned reverse process, is different only in that when the rewind linkage unit 42 contacts the rewind triggering unit 15, the rewind linkage unit 42 and the first transmission shaft 41 are caused to rotate clockwise, and at this time, because the pawl 53 and the limiting tooth portion 84 are in the forward direction, the supply fluted disc 50 will sequentially link the linkage fluted disc 70, the recovery fluted disc 62, the second transmission shaft 61 and the recovery sleeve 86 to rotate, when the first transmission shaft 41 links the supply sleeve 85 to rotate clockwise to release the film strip 90, the second transmission shaft 61 will also synchronously rotate the film winding tape 90, so that the film strip 90 still keeps a tensioned state and is pushed back to the rotation speed ratio slightly larger than the supply based on the recovery, and the clutch mechanism is used to adjust, after the coating head 31 moves forward and releases, the film strip 90 can be diffracted on the coating head 31 in a tensioned state, the replacement operation can be easily finished at one time without repeated taking out, adjustment and repeated operation.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended 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 (10)

1. A film applicator which can be automatically rewound when the tape is replaced and opened comprises an applicator body (1) for mounting a filling body (8), comprising a front shell (10) and a rear shell (20) which can be relatively opened and combined, wherein the front shell (10) comprises a front opening (11) and a side guide groove (13), and the rear shell (20) comprises a carrier plate (21) which can relatively slide in the side guide groove (13), so that the rear shell (20) can move between a combined position and an opened position relative to the front shell (10) to replace the filling body (8) in the opened position; wherein the carrier plate (21) is provided with a coating head (31) capable of extending out of the front opening (11) at the combination position, and a first transmission shaft (41) and a second transmission shaft (61) for installing and connecting the filling body (8), and the first transmission shaft (41) can drive the second transmission shaft (61) through a transmission mechanism;

the method is characterized in that:

the first transmission shaft (41) is provided with a rewinding linkage unit (42) at one end far away from the filling body (8) for linking the first transmission shaft (41) to rotate together;

the front shell (10) is provided with a rewinding touch unit (15) which is used for the rewinding touch unit (42) to contact and be driven by the rewinding touch unit (15) when moving along with the rear shell (20);

when the rear shell (20) moves from the combination position to the opening position and the rewinding linkage unit (42) contacts the rewinding touch unit (15), the rewinding linkage unit (42) can be driven by the rewinding touch unit (15) and can link the first transmission shaft (41) to rotate, so that the first transmission shaft (41) can drive the filling body (8) to rewind the loosened film strip (90).

2. The film applicator that automatically rolls back upon opening of the tape change of claim 1, wherein:

wherein the linkage mechanism comprises:

a supply gear (50) sleeved on the first transmission shaft (41) and capable of linking with the first transmission shaft (41);

a recycling gear (62) disposed at an end of the second transmission shaft (61) away from the filler (8) for driving the second transmission shaft (61) to rotate; and

a linkage toothed disc (70) disposed between the supply toothed disc (50) and the recovery toothed disc (62) and meshing with the supply toothed disc (50) and the recovery toothed disc (62), respectively.

3. The film applicator that automatically rolls back when the tape change is opened as recited in claim 2, wherein:

wherein the first transmission shaft (41) is linked with the supply fluted disc (50) through a clutch mechanism, and the supply fluted disc (50) is connected with a limiting mechanism for limiting the supply fluted disc (50) to rotate in one direction.

4. The film applicator that automatically rolls back upon opening of the tape change of claim 3, wherein:

wherein the clutch mechanism comprises:

a receiving groove (52) recessed in a central region of one side of the supply gear plate (50);

a spring member (55) wound in the accommodating groove (52) and capable of elastically abutting against the side wall of the accommodating groove (52);

and a clutch inner disk (43) which is convexly arranged on the first transmission shaft (41) and used for limiting the spring force piece (55) in the accommodating groove (52), and is convexly provided with at least one positioning convex part (431) which can link the spring force piece (55).

5. The film applicator that automatically rolls back when the tape change is opened of claim 4, wherein:

wherein the receiving groove (52) is concavely provided on a side of the supply toothed disc (50) remote from the filling body (8), and the limiting mechanism comprises at least one pawl (53) convexly provided on the other side of the supply toothed disc (50) and a limiting tooth portion (84) provided at a position of the filling body (8) corresponding to the pawl (53).

6. The film applicator with automatic rewind upon tape change of any of claims 1 to 5, wherein:

wherein the rewinding linkage unit (42) is disposed on the fluted disc at the end of the first transmission shaft (41), and the rewinding triggering unit (15) is disposed on the tooth segment of a local area at one side edge of the side guide slot (13).

7. The film applicator that automatically rolls back when the tape change is opened of claim 6, wherein:

wherein the rewinding linkage unit (42) and the rewinding triggering unit (15) are respectively provided with a ratchet disc and a ratchet section with a plurality of teeth, when in the combination position, the rewinding linkage unit (42) is positioned in front of the rewinding triggering unit (15), and when in the opening position, the rewinding linkage unit (42) is positioned behind the rewinding triggering unit (15).

8. The film applicator that automatically rolls back when the tape change is opened of claim 6, wherein:

wherein the filling body (8) comprises a supply shaft sleeve (85) and a recovery shaft sleeve (86), the supply shaft sleeve (85) is used for sleeving the first transmission shaft (41) and can be linked with the first transmission shaft (41) when in sleeving, and the recovery shaft sleeve (86) is used for sleeving the second transmission shaft (61) and can be linked with the second transmission shaft (61) when in sleeving; the film tape (90) is wound around a tape supply opening (83) on the front side of the filler (8) and is wound and fixed at both ends to the supply hub (85) and the recovery hub (86), respectively.

9. The film applicator with automatic rewind upon tape change opening of claim 8, wherein:

wherein the applicator body (1) further comprises an applicator head retracting mechanism for driving the applicator head (31) to move back and forth between a release position and a retracting position relative to the carrier plate (21); when the rewinding linkage unit (42) moves along with the rear shell (20) relative to the front shell (10), the rewinding linkage unit can be contacted with and driven by the rewinding triggering unit (15), so as to link the first transmission shaft (41) to drive the filling body (8) to rewind the loosened film tape (90).

10. The film applicator with automatic rewind upon tape change opening of claim 9, wherein:

wherein the filling body (8) is further provided with a first extension arm (831) and a second extension arm (832) for the film belt (90) to bypass at the belt supply port (83), and the coating head (31) can be moved back and retracted between the first extension arm (831) and the second extension arm (832).

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