HK1159564A - Application-film transfer tool - Google Patents

Description

Coating film transfer machine

Technical Field

The present invention relates to an application film transfer unit having a clutch mechanism and a reverse rotation prevention mechanism, and more particularly, to an application film transfer unit in which a part of a supply bobbin is configured as a part of a reverse rotation prevention mechanism.

Background

Conventionally, various coating film transfer devices for attaching an adhesive or correcting a wrong character have been proposed. Such a coating film transfer tool includes, in a housing: a supply bobbin for winding and mounting an unused transfer belt; a take-up spool on which a used transfer belt is wound after being pulled out from the supply spool; and an interlocking device for interlocking the supply spool and the winding spool. Further, as the transfer belt used herein, a transfer belt is used in which a coating film that is easily peeled off from the surface of a resin belt or a paper belt as a base belt serving as a conveying medium is provided on the surface.

In such a coating film transfer tool, the transfer tape is stretched over the transfer head protruding from the housing, and the housing is moved so that the transfer head is pressed against a transfer object such as paper in a state where the transfer head is in close contact with the transfer object, whereby the coating film of the transfer tape can be transferred onto the transfer object. At the same time, the transfer belt is sequentially paid out from the supply spool, and the used transfer belt (base tape) is wound up by the winding spool.

In such a coating film transfer device, since there is a possibility that transfer failure occurs when the transfer belt is bent, the rotation speed of the take-up spool is adjusted to be greater than the rotation speed of the supply spool so that the transfer belt always maintains a tension equal to or greater than a predetermined value. However, since the application film transfer unit is continuously used, the amount of the transfer tape wound around the supply bobbin is reduced, and the amount of the base tape wound around the winding bobbin is increased. Therefore, the supply spool needs to be idled so that the rotation of the supply spool is not entirely transmitted to the take-up spool, and in general, the coating film transfer device is provided with a clutch mechanism which absorbs a difference in the transfer amount of the transfer belt between the supply spool and the take-up spool and adjusts the tension of the transfer belt.

Further, although the casing is moved to transfer the coating film of the transfer belt to the transfer target by the coating film transfer device, when the casing is moved in a direction opposite to the moving direction at the time of the transfer, there is a problem that the transfer belt is bent or the transfer belt is entangled in the casing, and therefore, a reverse rotation preventing mechanism is generally provided in the coating film transfer device.

For example, JP 2002-205867 a (patent document 1) proposes a coating film transfer device having a clutch mechanism on the outer peripheral side of the rotating shaft of the supply spool, the clutch mechanism being formed by cantilever-supporting elastic arms (curved members) in contact with the inner peripheral surface of the supply spool at positions spaced by 120 degrees along the circumferential direction of the rotating shaft, and having a reverse rotation prevention mechanism having locking arms provided on the supply-side gear and serrations as locking grooves formed on the inner surface of the housing.

The applicant of the present application has proposed a coating film transfer tool provided with a clutch mechanism that facilitates replacement work, in which a clutch member having an elastic arm provided on a rotary shaft is attached to a circular recess formed on an upper surface of a supply-side gear, and a protrusion formed on an end of the elastic arm is made to contact an inner circumferential surface of the circular recess to be slidable (patent document 2). Further, the reverse rotation prevention mechanism of the coating film transfer unit includes, for example: a ratchet portion also provided on the gear portion of the take-up spool; a locking arm provided on the flat plate portion of the housing so as to be engageable with the ratchet portion; this prevents the supply spool from reversing.

Patent document 1: JP 2002-205867 publication;

patent document 2: JP 2003-103994 publication.

In the case of transfer using an application film transfer unit, a predetermined load needs to be applied to the transfer head in order to transfer the application film of the transfer belt to the transfer target, but the application film transfer unit described in the above patent document causes mechanical loss by the reversal prevention mechanism in the drive transmission system. Here, if the core diameter of the supply bobbin is increased, the transfer load is not increased even if the friction force of the clutch mechanism is large, and it is not difficult to use the supply bobbin.

Further, recently, with the progress of miniaturization of products, the winding core diameter needs to be made smaller. However, if the core diameter is reduced for downsizing, the transfer load applied to the supply bobbin is increased by the frictional force of the clutch mechanism or the reverse rotation preventing mechanism. Therefore, when the diameter of the winding core is reduced, the supply spool may not be smoothly rotated due to mechanical loss by the clutch mechanism or the reverse rotation preventing mechanism.

Further, as in the coating film transfer device described in the above patent document, if the reverse rotation preventing mechanism is provided in the vicinity of the supply-side gear or the take-up spool and the clutch mechanism is provided between the reverse rotation preventing mechanism and the supply spool, the slip resistance of the clutch mechanism for transmitting the normal rotation to the take-up spool via the reverse rotation preventing mechanism is necessarily increased, and the rotational resistance of the supply spool due to the resistance of the clutch mechanism is increased, and it is often difficult to rotate the supply spool.

Therefore, in order to prevent the transfer load from increasing, it is necessary to reduce the frictional force generated by the clutch mechanism or the reverse rotation prevention mechanism, but when the slip resistance of the clutch mechanism is reduced by reducing the core diameter, the clutch mechanism may run idle due to a small mechanical loss, and the normal rotation cannot be transmitted to the take-up spool via the clutch mechanism, and the take-up spool cannot be rotated, thereby causing a defect in taking up the used tape.

Disclosure of Invention

The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a small-sized coating film transfer device which can prevent a mechanical loss of a drive transmission system caused by providing a reverse rotation prevention mechanism on a supply-side gear or a take-up spool, and can transmit a driving force to reliably rotate the take-up spool even if a friction force of a clutch mechanism is small.

The coating film transfer tool of the present invention is characterized by comprising: a supply bobbin on which an unused transfer belt is wound; a transfer head, which spans a transfer belt and presses the transfer head on a transfer object to make the coating film of the transfer belt transfer on the transfer object in a pressure sensitive manner; a take-up spool that winds up the used transfer belt; a clutch mechanism that transmits rotation of the supply spool to the take-up spool and controls a rotation speed of the take-up spool; a reverse rotation preventing mechanism that prevents reverse rotation of the supply spool; a portion of the supply spool constitutes a portion of the reverse rotation prevention mechanism.

Further, in the coating film transfer machine, the supply spool, the transfer head, and the take-up spool are housed in a refill case that is detachable from the main body, and the reversal prevention mechanism is provided in the refill case.

Further, in the coating film transfer machine, the reverse rotation preventing mechanism includes: a plurality of locking grooves provided in a circumferential direction on the supply spool; and an elastically deformable latching arm provided on the refill housing.

In the coating film transfer tool, the main body to which the refill case is detachably attached includes a base member including: the clutch mechanism; a supply-side gear that transmits the rotational force of the supply spool via the clutch mechanism; a winding side gear for transmitting a rotational force to the winding spool; and an interlocking device for interlocking the supply side gear and the winding side gear.

According to the present invention, a small-sized coating film transfer device is provided which can avoid mechanical loss of a drive transmission system caused by providing a reverse rotation prevention mechanism on a supply side gear or a take-up spool, and can transmit a driving force to reliably rotate the take-up spool even if a friction force of a clutch mechanism is small.

Further, since the reverse rotation preventing mechanism is provided in the refill housing, the reverse rotation preventing mechanism can be replaced even when the supplementary transfer belt is replaced. Thus, the coating film transfer tool capable of using the main body for a long time can be provided.

Drawings

Fig. 1 is a perspective view of a coating film transfer tool according to an embodiment of the present invention.

Fig. 2 is a perspective view showing a state in which the main body of the coating film transfer tool according to the embodiment of the present invention is separated from the refill (refill).

Fig. 3 is a perspective view of a refill of the coating film transfer tool of the embodiment of the present invention.

Fig. 4 is a perspective view of a main body of the coating film transfer tool of the embodiment of the present invention.

Fig. 5 is a perspective view of a loading-side housing of a refill of the coating film transfer machine of the embodiment of the present invention.

Fig. 6 is a perspective view showing a state in which the supply bobbin and the take-up bobbin are accommodated in the loading-side case of the refill of the coating film transfer machine according to the embodiment of the present invention.

Fig. 7A and 7B are schematic views showing the operation of the reverse rotation preventing mechanism of the coating film transfer unit according to the embodiment of the present invention.

Detailed Description

Next, a mode for carrying out the present invention will be described. The coating film transfer tool 1 has a refill 5, and a main body 3 for holding the refill 5. The refill 5 includes a refill housing that is detachable from the main body 3, a supply spool 53, a transfer head 7, a take-up spool 55, and a transfer belt 51 that are accommodated in the refill housing.

An unused transfer belt 51 is wound around the supply spool 53. Further, the transfer head 7 spans the transfer belt 51, and the coating film of the transfer belt 51 is pressure-sensitive transferred to the transfer target by pressing the transfer head 7 against the transfer target. Then, the used transfer belt 51 (base belt) is wound by a winding spool 55.

The main body 3 has: a base member 11 having a rear fixing member 31 for holding the rear of the refill 5; and a front fixing member 13 for holding the front of the refill 5. The base member 11 is provided with: a clutch mechanism; a supply-side gear 26 that transmits the rotational force of the supply spool 53 via the clutch mechanism; a take-up side gear 28 that transmits a rotational force to the take-up spool 55; and an intermediate spur gear 27 as an interlocking device for interlocking the supply-side gear 26 and the winding-side gear 28. The clutch mechanism is formed by the clutch member 29 and the supply-side gear 26, and functions as a friction clutch by bringing a convex portion formed at the tip of the elastic arm 29a into contact with the inner peripheral surface of the circular concave portion 26a, thereby transmitting the rotation of the supply spool 53 to the take-up spool 55 and controlling the rotation speed of the take-up spool 55.

In the coating film transfer tool 1, the base member 11 of the main body 3 is separated from the front fixing member 13, the refill 5 is mounted on the base member 11, and in this state, the base member 11 of the main body 3 and the front fixing member 13 are brought close to each other and connected to each other, whereby the refill 5 can be fixed to a predetermined position of the main body 3 by the front fixing member 13 and the rear fixing member 31 of the base member 11.

Further, the coating film transfer machine 1 has a reverse rotation preventing mechanism for preventing the reverse rotation of the supply bobbin 53 in the refill housing. The reverse rotation preventing mechanism includes: a plurality of locking grooves 53a provided in the circumferential direction on the supply spool 53; and an elastically deformable latching arm 71e provided on the refill housing. That is, a part of the supply spool 53 constitutes a part of the reverse rotation preventing mechanism.

[ examples ]

The coating film transfer tool 1 of the present invention will be described in detail below based on the drawings. Fig. 1 is an external perspective view of the coating film transfer tool 1 of the present embodiment, and fig. 2 is a perspective view showing a state in which the refill 5 is separated from the main body 3. In the present specification, the direction in which the transfer head 7 of the coating film transfer tool 1 in fig. 1 is located is defined as the front, the direction in which the base member 11 of the main body 3 is located is defined as the rear, the direction in which the refill 5 is located is defined as the upper, the direction in which the main body 3 is located is defined as the lower, and the direction perpendicular to the front-rear direction and the vertical direction is defined as the lateral direction.

The coating film transfer tool 1 of the present embodiment pressure-sensitively transfers the coating film of the transfer belt 51 to a transfer object such as paper by sliding the transfer head 7 in a state of being pressed against the transfer object, wherein the transfer belt 51 is formed by locking the coating film to a base tape. As shown in fig. 1 and 2, the coating film transfer tool 1 includes a refill 5 and a main body 3 for holding the refill 5.

The drive transmission system of the coating film transfer tool 1, which is integrated by attaching the refill 5 to the main body 3, includes: a supply spool 53 that rotates by pulling out the transfer belt 51; a clutch member 29 that rotates in conjunction with the supply spool 53; a supply-side gear 26 that rotates by a frictional force with the clutch member 29; an intermediate spur gear 27 that meshes with the supply-side gear 26; a winding-side gear 28 to which the rotational force of the supply-side gear 26 is transmitted via the intermediate spur gear 27; and a take-up spool 55 that rotates in conjunction with the take-up side gear 28.

As shown in fig. 2 and 3, the refill 5 is a replaceable refill, and includes a transfer belt 51, a supply spool 53, a transfer head 7, a take-up spool 55, and a refill housing accommodating these components. The refill housing is detachable from the main body 3, and includes: a loading-side housing 61 that houses the supply spool 53 and the take-up spool 55; and a cover case 63 having the transfer head 7.

The supply spool 53 is in a shape in which circular plates are attached to the upper and lower end portions of a cylinder, and winds and mounts the unused transfer belt 51 to supply the transfer belt 51 to the transfer head 7. Also, a projection 53b is formed on the inner surface of the cylinder, and the projection 53b is engaged with the shaft portion of the clutch member 29 attached to the body 3.

The winding spool 55 winds the used transfer belt 51 (base belt), and like the supply spool 53, circular plates are attached to the upper and lower end portions of the cylinder, and a projection 55a is formed in the cylinder, the projection 55a being engaged with the shaft portion of the winding side gear 28 attached to the main body 3. Further, the diameter of the cylinder of the take-up spool 55 is formed larger than the diameter of the cylinder of the supply spool 53.

The transfer head 7 is formed by mounting a shaft 68 on the tip end portion of the refill 5, and a tube 69 is supported on the shaft 68. The transfer belt 51 is provided over the transfer head 7, and the user can pressure-sensitively transfer the coating film of the transfer belt 51 to a transfer target such as paper by moving the transfer head 7 while pressing it against the transfer target.

As shown in fig. 4, the main body 3 has: a base member 11 having a rear fixing member 31 for holding the rear of the refill 5; and a front fixing member 13 that holds the front of the refill 5. As a result, as shown in fig. 2, in the coating film transfer tool 1, the base member 11 of the main body 3 is separated from the front fixing member 13, the refill 5 is mounted on the base member 11, and in this state, the base member 11 of the main body 3 and the front fixing member 13 are brought close to each other and connected, so that the refill 5 can be fixedly mounted at a predetermined position of the main body 3 by the front fixing member 13 and the rear fixing member 31 of the base member 11.

As shown in fig. 4, the base member 11 is provided with: a clutch mechanism; a supply-side gear 26 that transmits the rotational force of the supply spool 53 via the clutch mechanism; a take-up side gear 28 that transmits a rotational force to the take-up spool 55; and an interlocking device for interlocking the supply side gear 26 and the winding side gear 28.

The supply-side gear 26 has a disk shape with teeth on the outer surface, and has a circular recess 26a on the upper surface, and the recess 26a is provided with an elastic arm 29a of a clutch member 29. The supply-side gear 26 is axially supported in front of the base member 11.

The clutch mechanism has a clutch member 29 and a supply-side gear 26. The clutch member 29 has a cylindrical shaft portion, and 3 elastic arms 29a formed on a side surface near the lower end of the shaft portion, wherein a projection for engaging with the supply bobbin 53 is formed on the side surface of the shaft portion, and a projection portion which is a portion abutting against the inner peripheral surface of the circular recess 26a is formed at the tip of the elastic arm 29 a.

The clutch member 29 is axially supported so that the rotation center thereof is the same as the rotation center of the supply-side gear 26, and the projecting portions of the elastic arms 29a engage with the inner peripheral surface of the recessed portion 26a of the supply-side gear 26, and apply a predetermined force outward (in the direction perpendicular to the circumferential direction, i.e., in the radial direction). That is, the clutch mechanism functions as a friction clutch by the contact of the convex portion of the elastic arm 29a with the inner peripheral surface of the concave portion 26 a.

The winding-side gear 28 includes a cylindrical shaft portion, a circular plate formed at the lower end of the shaft portion, and a gear not shown formed below the circular plate, and a protrusion that engages with the winding spool 55 is formed on the side surface of the shaft portion. The winding-side gear 28 is supported by a shaft provided vertically near the rear end of the base member 11. In the present embodiment, in order to keep the transfer belt 51 at a tension equal to or higher than a predetermined value, the diameter of the gear of the winding-side gear 28 is formed smaller than the diameter of the gear of the supply-side gear 26.

The interlocking means for interlocking the supply-side gear 26 and the winding-side gear 28 is formed by 2 intermediate spur gears 27, and the intermediate spur gears 27 are axially supported between the supply-side gear 26 and the winding-side gear 28 and mesh with the supply-side gear 26 and the winding-side gear 28, respectively.

Therefore, in the coating film transfer device 1, when the user moves the coating film transfer device 1 in a state where the transfer head 7 on which the transfer belt 51 is laid is pressed against the transfer object, the transfer belt 51 is pulled out and the supply spool 53 is rotated. When the supply spool 53 rotates, the clutch member 29 connected to the supply spool 53 rotates integrally.

When the clutch member 29 rotates, the supply-side gear 26 rotates due to a frictional force between a convex portion provided at the tip of the elastic arm 29a of the clutch member 29 and the inner circumferential surface of the concave portion 26a of the supply-side gear 26 with which the convex portion contacts. When the supply-side gear 26 rotates, the rotational force is transmitted to the winding-side gear 28 via the intermediate spur gear 27, and the winding-side gear 28 rotates.

At this time, since the supply-side gear 26 and the winding-side gear 28 are rotated at a predetermined rotation ratio so that the rotation speed of the winding-side gear 28 becomes greater than that of the supply-side gear 26, a tension equal to or greater than a predetermined value is always applied to the transfer tape 51 when the supply spool 53 rotates in the normal direction. When the tension of the transfer belt 51 becomes equal to or greater than a certain level, the clutch member 29 slides on the inner circumferential surface of the circular recess 26a, and therefore the tension of the transfer belt 51 does not become excessive. That is, the clutch mechanism transmits the rotation of the supply spool 53 to the take-up spool 55, and controls the rotation speed of the take-up spool 55.

Next, a reverse rotation preventing mechanism of the coating film transfer tool 1 of the present embodiment will be described. The reverse rotation preventing mechanism prevents the supply spool 53 from being reversed to avoid the transfer belt 51 wound around the supply spool 53 or the take-up spool 55 from being bent or the transfer belt 51 from being wound around inside the refill housing.

As shown in fig. 3, the reverse rotation prevention mechanism includes: a plurality of locking grooves 53a provided in the circumferential direction on the supply spool 53; and an elastically deformable latching arm 71e provided on the refill 5. That is, a part of the supply spool 53 constitutes a part of the reverse rotation preventing mechanism. The reverse rotation preventing mechanism is provided in a refill case that is detachable from the main body. The locking grooves 53a are rectangular through holes provided at equal intervals in the circumferential direction, and the interval between the through holes is preferably as small as possible.

The locking arm 71e is formed on the mounting panel 71 of the mounting-side housing 61 of the refill 5. Fig. 5 is a perspective view of loading-side housing 61 that houses supply spool 53 and take-up spool 55. As shown, the loading-side housing 61 has: a substantially trapezoidal shaped loading panel 71 that is long in the front-rear direction and has a rear end edge longer than a front end edge; and side walls 75 vertically erected from both side edges of the loading panel 71. The mounting panel 71 includes a circular winding-spool mounting portion 71a in which the winding spool 55 is disposed near the rear end, and a circular supply-spool mounting portion 71b in which the supply spool 53 is disposed in front of the winding-spool mounting portion 71 a. The winding-spool mounting portion 71a and the supply-spool mounting portion 71b are circular recesses slightly protruding downward from the mounting panel 71, and the centers of the mounting portions 71a and 71b are formed as circular openings.

Further, a locking arm 71e that locks with the locking groove 53a of the supply spool 53 when the supply spool 53 is reversed is formed on the circumference of the opening portion of the supply spool mounting portion 71 b. The locking arm 71e provided in the loading-side housing 61 of the refill 5 has a cantilever structure, and is provided to extend in the circumferential direction from a predetermined position of the supply spool loading portion 71b and to be elastically deformable in the vertical direction. Further, a locking claw 71f that locks with the locking groove 53a of the supply spool 53 is formed at the distal end portion of the locking arm 71 e. A tapered portion is formed at the tip of the locking claw 71f to allow the supply spool 53 to rotate rightward.

As shown in fig. 6, the supply spool 53 is mounted on the supply spool mounting portion 71b of the mounting-side housing 61 such that the locking groove 53a contacts the locking claw 71f (see fig. 5) of the mounting-side housing 61. Thus, when a rotational force in the normal rotation direction, i.e., in the right direction, is applied to the supply spool 53, a predetermined load is applied to the supply spool 53, and the supply spool 53 is allowed to rotate in the normal direction. When a reverse rotation, i.e., a leftward rotation force is applied to the supply spool 53, the locking claw 71f of the locking arm 71e engages with the locking groove 53a of the supply spool 53, thereby preventing the supply spool 53 from reversing.

Specifically, when the supply spool 53 is rotated in the normal rotation direction, as shown in fig. 7A, the locking groove 53a engages with the locking claw 71f of the loading-side housing 61, but since a tapered portion is formed at the tip end of the locking claw 71f, the locking arm 71e having elasticity is bent downward when the tapered portion engages with the locking groove 53a or the bottom surface of the supply spool 53 between the locking grooves 53 a. That is, the supply spool 53 can rotate while the locking arm 71e is repeatedly bent downward by the rotation of the supply spool 53.

In this way, since the engagement claw 71f repeatedly engages with the engagement groove 53a during normal rotation of the supply spool 53, a predetermined load is directly applied to the supply spool 53 during normal rotation of the supply spool 53. However, since the supply spool 53 is directly provided with the reverse rotation preventing mechanism, even if the user feels a slight resistance due to the reverse rotation preventing mechanism, the reverse rotation preventing mechanism does not cause a mechanical loss in the drive transmission system.

On the other hand, when a force for rotating the supply spool 53 in the reverse direction is applied, as shown in fig. 7B, the distal end surface of the locking claw 71f abuts against the inner side surface of the locking groove 53a, and the rotation operation of the supply spool 53 is stopped. This can reliably prevent the supply spool 53 from reversing, and thus prevent the transfer belt 51 wound around the supply spool 53 or the take-up spool 55 from being bent or the transfer belt 51 from being entangled in the refill housing.

Thus, the reverse rotation preventing mechanism is constituted by the locking groove 53a of the supply spool 53 and the locking arm 71e of the loading-side housing 61, and thus, it is possible to provide a small-sized coating film transfer device 1 which can avoid the mechanical loss of the drive transmission system caused by providing the reverse rotation preventing mechanism to the supply-side gear 26 or the winding-side gear 28 in the related art, and which can transmit the driving force and reliably rotate the winding spool 55 even if the core diameter is reduced and the friction force of the clutch mechanism is reduced.

Further, since the reverse rotation preventing mechanism is provided in the refill housing, the reverse rotation preventing mechanism can be replaced also when the supplementary transfer belt 51 is replaced. This makes it possible to provide the coating film transfer tool 1 which can be used for a long period of time with the main body 3.

The present invention is not limited to the above embodiments, and can be freely modified and improved without departing from the scope of the invention. For example, the reverse rotation prevention mechanism is not limited to the above-described embodiment, and the locking groove 53a may be formed on the refill housing side and the locking arm 71e may be formed on the supply spool 53. Further, the detent portion may be formed without forming the locking groove 53a as a through hole. Further, the locking arm 71e may be provided on the supply spool mounting portion 71b, and the locking groove 53a may be provided on the outer peripheral surface of the lower circular plate of the supply spool 53. That is, the reverse rotation preventing mechanism can adopt various configurations in which a part thereof is formed on the supply spool 53.

Claims (4)

1. An application film transfer tool, comprising:

a supply bobbin on which an unused transfer belt is wound;

a transfer head, which spans a transfer belt and presses the transfer head against a transfer object to pressure-sensitively transfer a coating film of the transfer belt to the transfer object;

a take-up spool that takes up the used transfer belt;

a clutch mechanism that transmits rotation of the supply spool to the take-up spool and controls a rotation speed of the take-up spool;

a reverse rotation preventing mechanism that prevents reverse rotation of the supply spool;

a portion of the supply spool constitutes a portion of the reverse rotation prevention mechanism.

2. The coating film transfer tool of claim 1,

the supply bobbin, the transfer head, and the take-up bobbin are accommodated in a refill housing that is detachable from the main body,

the reverse rotation preventing mechanism is provided in the refill housing.

3. The coating film transfer tool of claim 2,

the reverse rotation preventing mechanism includes: a plurality of locking grooves provided in a circumferential direction on the supply spool; and an elastically deformable latching arm provided on the refill housing.

4. The coating film transfer tool according to claim 2 or 3,

the main body to which the refill case is detachably attached has a base member having: the clutch mechanism; a supply-side gear that transmits the rotational force of the supply spool via the clutch mechanism; a winding side gear for transmitting a rotational force to the winding spool; and an interlocking device for interlocking the supply side gear and the winding side gear.