CN112644210A - Transfer tool - Google Patents

Abstract

The invention provides a transfer tool which is configured to enable the tip side of a compression coil spring in a slip clutch mechanism to be in proper sliding contact with a rotating element. The transfer tool includes a reel interlocking mechanism for interlocking rotation of a reel for unwinding and a reel for winding, and a slip clutch mechanism for generating a slip between the unwinding gear and the first core member to optimize tension of the transfer belt. The slip clutch mechanism further includes a compression coil spring having a base end side fixed to the release gear and a tip end elastically brought into sliding contact with a spring receiving surface provided on the first core member in a posture orthogonal to the common shaft by an elastic restoring force generated by contraction in the direction of the common shaft, and a winding direction of the compression coil spring is set to a direction opposite to a rotational direction input to the release gear and the first core member.

Description

Transfer tool

Technical Field

The present invention relates to a transfer tool.

Background

Conventionally, there is known a transfer tool including: a reel for unwinding a transfer belt to which a transfer material such as paste (japanese) is added; a take-up reel for taking up the transfer belt paid out from the pay-out reel; and a spool linkage mechanism that links the rotations of the two spools.

As shown in patent document 1, there is a transfer device of this type in which a coil spring is disposed between a gear for feeding and a spacer (hereinafter, referred to as "spacer") capable of supporting a feeding spool in order to optimize the tension of a transfer belt. The transfer tool disclosed in patent document 1 is configured to be able to generate a slip between the gear for ejection and the spacer by an elastic force generated by a displacement in the radial direction of the coil spring.

However, in the transfer tool having such a configuration, since the coil spring biasing the gear for ejection and the spacer in the radial direction is in sliding contact with the gear for ejection and the spacer over a wide range, it is difficult to set the degree of sliding of the spacer with respect to the gear for ejection, and there is a problem that both the gear for ejection and the spacer are easily deteriorated due to wear.

The above is not limited to the case where the coil spring is disposed between the gear for unwinding and the member supporting the reel for unwinding.

Documents of the prior art

Patent document

Patent document 1: japanese patent publication No. 5382655

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above circumstances, and an object thereof is to provide a transfer tool in which at least a compression coil spring constituting a slip clutch mechanism and a rotary element can be brought into sliding contact with each other appropriately.

Means for solving the problems

That is, the present invention is configured as follows.

The invention described in claim 1 relates to a transfer tool for winding a transfer belt unwound from an unwinding spool onto a winding spool via a transfer head, the transfer tool including a spool interlocking mechanism for interlocking rotations of the two spools and a slip clutch mechanism for generating a slip between two rotating elements constituting the spool interlocking mechanism and rotating around a common shaft to adjust a tension of the transfer belt, the slip clutch mechanism including a compression coil spring having a base end side fixed to one rotating element and a tip end in elastic sliding contact with a spring receiving surface of the other rotating element in a posture orthogonal to the common shaft by an elastic restoring force generated by contraction in the direction of the common shaft, the winding direction of the compression coil spring is set to be opposite to the rotation direction input to the rotation element.

In the transfer tool according to claim 1 of the present invention according to claim 2, the one rotation element includes a spring holding member that is in pressure contact with at least one of an outer peripheral surface and an inner peripheral surface of a base end portion of the compression coil spring.

In the transfer tool according to claim 1 or 2, in the invention according to claim 3, the reel interlocking mechanism includes: a first core member fitted to an inner periphery of the reel for payout; a first linkage gear rotating together with the first core member; a second linkage gear meshed with the first linkage gear; and a second core member that rotates together with the second linkage gear and is fitted to an inner periphery of the take-up spool, wherein the slip clutch mechanism is provided between the core member and the linkage gear.

In the transfer tool according to claim 3, in the invention according to claim 4, the one rotational element is the first interlocking gear, and the other rotational element is the second core member.

In the transfer tool according to claim 4 of the invention according to claim 5, the spring holding member is a cylindrical member provided at a central portion of the first interlocking gear, and a proximal end portion of the compression coil spring is press-fitted into the spring holding member.

The invention described in claim 6 relates to a transfer tool for winding a transfer belt unwound from an unwinding spool onto a winding spool via a transfer head, the transfer tool including a spool interlocking mechanism for interlocking rotations of the two spools and a slip clutch mechanism for generating a slip between two rotating elements constituting the spool interlocking mechanism and rotating around a common shaft to adjust a tension of the transfer belt, the slip clutch mechanism including a compression coil spring having a base end side fixed to one rotating element and a tip end in elastic sliding contact with a spring receiving surface of the other rotating element in a posture orthogonal to the common shaft by an elastic restoring force generated by contraction in the direction of the common shaft, the compression coil spring can rotate in a direction in which a notch end face (japanese: small-mouth end face) on the tip end side is not caught by the spring receiving face.

ADVANTAGEOUS EFFECTS OF INVENTION

As described above, according to the present invention, it is possible to provide a transfer tool in which at least a compression coil spring constituting a slip clutch mechanism and a rotary element can be brought into sliding contact with each other appropriately.

Drawings

Fig. 1 is a perspective view showing an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the embodiment.

Fig. 3 is an exploded perspective view of the embodiment.

Fig. 4 is a right side view of the embodiment.

Fig. 5 is a cross-sectional view taken along line X-X in fig. 4.

Fig. 6 is a right side view of the embodiment.

Fig. 7 is an explanatory view of the compression coil spring of this embodiment.

Fig. 8 is a right side view of the embodiment.

Fig. 9 is a cross-sectional view taken along line Y-Y of fig. 8.

Description of the reference numerals

3. spool for paying-out

4. reel for taking up

D · direction of rotation

F sliding clutch mechanism

G.spool linkage mechanism

H.transfer head

L (of compression coil spring) winding direction

T. transfer printing belt

V. compression coil spring

Detailed Description

An embodiment of the present invention will be described below with reference to fig. 1 to 9.

In this embodiment, the present invention is applied to a transfer tool for transferring a paste (not shown) as a transfer material onto a transfer target surface (not shown) such as paper.

The transfer tool accommodates a transfer belt T having a belt-shaped base material T1 and a paste (not shown) attached to one surface of the base material T1 in a predetermined pattern. The transfer tool can apply the paste to the transfer target surface by pressing the transfer belt T, the back surface of which is in contact with the transfer head H, against the transfer target surface.

The transfer tool winds the transfer belt T paid out from the reel 3 for paying out onto the reel 4 for winding up via the transfer head H. In other words, the transfer tool is configured to be capable of moving the transfer belt T from the reel 3 for feeding to the reel 4 for winding via the transfer head H in conjunction with the operation performed by the user.

The transfer tool comprises: a case C provided with a reel linkage mechanism G for linking rotation of the reel 3 for unwinding and the reel 4 for winding; and a replacement R configured to be attachable to and detachable from the housing C. The replacement R holds a reel 3 for pay-out, a transfer head H, and a reel 4 for take-up.

< < housing C >

The case C includes a case body 1 on which the reel linkage mechanism G is disposed, and a slide member 2 supported slidably with respect to the case body 1.

< housing body 1>

The housing body 1 includes an outer wall 11 on the left side covering an internal space in which the reel linkage G is housed, a lower wall 12 extending from a lower edge of the outer wall 11 in a direction substantially orthogonal to the outer wall 11, and an upper wall 13 extending from an upper edge of the outer wall 11 in a direction substantially orthogonal to the outer wall 11.

A first support shaft J1 serving as a rotation center of the reel 3 for unwinding and a second support shaft J2 serving as a rotation center of the reel 4 for winding stand upright on the outer wall 11. The first pivot J1 is disposed rearward of the second pivot J2. A claw-shaped retaining portion J11 for preventing the release gear B as the first interlocking gear from being released is provided at the distal end portion of the first shaft J1. A claw-shaped retaining portion J21 for preventing the winding gear N as the second linkage gear from being released is provided at the distal end portion of the second pivot shaft J2.

< sliding Member 2>

The slide member 2 is configured to be slidable in the front-rear direction along a slit 111 provided in the outer wall 11 of the housing body 1. The slide member 2 is slidably movable between a normal position (B) and a separated position (S) with respect to the housing main body 1. When the slide member 2 is at the separation position (S), the replacement R is detachable from the housing main body 1.

The slide member 2 includes a rear outer wall 21 and a peripheral wall 22, the rear outer wall 21 being disposed along the outer wall 11 of the housing body 1, and the peripheral wall 22 being provided to extend in a direction substantially orthogonal to the rear outer wall 21 and having a shape of a partial arc in side view that can cover the upper side, the rear side, and the lower side of the reel 3 for unwinding.

An engaging projection 211 that engages with a slit 111 formed in the housing body 1 is provided at the front end of the rear outer wall 21. Further, engagement claws 222 are provided on the upper and lower front end portions of the peripheral wall 22 so as to project forward, and can be engaged with engagement holes 121 and 131 provided in the lower wall 12 and the upper wall 13 of the housing body 1 at the normal position (B).

< < replacement R >)

The replacement R includes a support plate R1 constituting an outer side wall covering the right side of the internal space, an inner plate R2 disposed to face the front portion of the support plate R1, a reel 3 for discharging that is wound around the transfer belt T and supported rotatably with respect to the support plate R1 at the rear portion of the support plate R1, a reel 4 for winding up the transfer belt T discharged from the reel 3 for discharging and disposed rotatably between the support plate R1 and the inner plate R2, and a transfer head H supported by the support plate R1 and the inner plate R2.

The replacement R winds the transfer belt T around the reel 3 for pay-out and causes the transfer belt T pulled out from the reel 3 for pay-out to reach the reel 4 for take-up after passing through the transfer head H.

A head cover 5 capable of protecting the transfer head H is rotatably attached to the lower portions of the front end portions of the support plate r1 and the inner plate r 2. An engaging convex portion r11 protruding rearward is provided at the rear end of the support plate r 1. When the slide member 2 is at the normal position (B), the engaging convex portion r11 can engage with the engaging concave portion 221 formed in the peripheral wall 22.

The reel 3 for unwinding may have a first core means a constituting a reel interlocking mechanism G fitted to the inner periphery thereof.

The second core member E constituting the reel interlocking mechanism G may be fitted to the inner periphery of the reel 4 for winding.

< spool linkage G >

The reel linkage mechanism G includes: a first core member a fitted to the inner periphery of the reel 3 for unwinding; a discharge gear B which is a first interlocking gear that rotates together with the first core means a; the winding gear N is a second linkage gear meshed with the pay-out gear B; and a second core member E that rotates together with the winding gear N and is fitted to the inner periphery of the winding spool 4.

The reel interlocking mechanism G includes a slip clutch mechanism F for generating a slip between the release gear B, which is one of the two rotating elements rotating about the common shaft, i.e., the first support shaft J1, and the first core member a, which is the other rotating element, to thereby optimize the tension of the transfer belt T.

The first core means a includes: a cylindrical boss (english: boss) portion a1 in which a first support shaft J1 and a support member B3 of the discharge gear B are arranged; an intermediate wall a2 having an annular plate shape and extending outward from the distal end edge of the boss portion a1 substantially perpendicularly to the boss portion a 1; and a cylindrical reel release engagement portion a3 extending from an outer end edge of the intermediate wall a2 in a direction substantially perpendicular to the intermediate wall a 2.

The boss portion a1 has a cylindrical shape with a smaller diameter than the reel release engagement portion a 3. The distal end side of the compression coil spring V is disposed so as to surround the outer periphery of the boss portion a 1. The boss portion a1 extends long in the protruding direction of the support member b3 described later.

The intermediate wall a2 has a spring receiving surface m on a surface facing the boss portion a1 side, the spring receiving surface m being oriented perpendicular to the axial direction of the first support shaft J1. In other words, the spring receiving surface m is a smooth surface facing the compression coil spring V. The tip end V2 of the compression coil spring V slidably abuts against the spring receiving surface m.

The discharge reel engaging portion a3 has a cylindrical shape with a larger diameter than the boss portion a 1. A plurality of engaging projections t engageable with the reel 3 for unwinding are provided projecting outward from the unwinding reel engaging portion a 3.

The discharge gear B includes: a tooth b1 provided on the outer peripheral edge and meshed with the winding gear N; a spring holding member b2 disposed in the central portion and capable of holding a base end portion V1 of the compression coil spring V; and a shaft-like support member b3 disposed on the inner side of the spring holding member b2 and rotatably supporting the first core member a. The discharge gear B is formed by integrally forming the teeth B1, the spring holding member B2, and the support member B3 from a synthetic resin.

The spring holding member b2 is crimped to the outer peripheral surface V11 of the base end portion V1 of the compression coil spring V. The spring holding member B2 is a cylindrical member provided at the center of the discharge gear B. That is, the spring holding member b2 includes a cylindrical spring holding member main body b21 and a plurality of spring pressure-contact portions b22 that protrude inward from the inner peripheral surface of the spring holding member main body b 21.

The compression coil spring V can be fixed to the discharge gear B by pressing its base end portion V1 into the spring holding member B2. That is, the compression coil spring V is fixed to such an extent that it can rotate integrally with the discharge gear B by pressing the spring crimping portion B22 provided to protrude from the spring holding member main body B21 against the outer peripheral surface V11 of the base end portion V1 of the compression coil spring V from the outside.

The support member b3 can rotatably support the first core member a. The support member b3 is located outside the first pivot shaft J1 and protrudes in the same axial direction as the first pivot shaft J1. A claw-shaped retaining portion b31 capable of positioning the first core member a biased by the compression coil spring V is provided at the distal end portion of the support member b 3. In this embodiment, since the boss portion a1 of the first core means a, which is set long, is attached to the outer periphery of the support means b3, the play (japanese patent: ガタ) of the fitting portion between the support means b3 and the reel-for-reel engaging portion a3 of the first core means a can be reduced, and the inclination of the reel 3 for reel-out can be suppressed.

The first core member a is constantly biased in a direction away from the discharge gear B by the compression coil spring V. The position of the first core means a is defined by engaging the stopper b31 provided in the support member b3 with the intermediate wall a 2. The disengagement prevention portion J11 of the first support shaft J1 engages with the distal end portion of the support member B3 to prevent the release gear B from disengaging.

The winding gear N is provided with a tooth N1 on the outer peripheral edge thereof, which meshes with the discharge gear B. The take-up gear N is supported rotatably with respect to the second fulcrum J2. In this embodiment, the second core member E is integrally provided at the center portion of the winding gear N.

The second core member E is mainly configured by a cylindrical winding reel engaging portion E1 in which a second support shaft J1 is disposed. The winding spool engaging portion e1 is provided with a plurality of engaging projections k that can engage with the winding spool 4 for winding. The coming-off prevention portion J21 of the second support shaft J2 prevents the winding gear N and the second core member E from coming off by engaging with the distal end edge of the winding spool engagement portion E1.

Next, a slip clutch mechanism F constituting the reel interlocking mechanism G in the present embodiment will be described.

The slip clutch mechanism F includes a compression coil spring V that fixes the base end portion V1 side to the discharge gear B and elastically slides the tip end portion V2 in contact with a spring receiving surface m provided on the first core member a in a posture orthogonal to the common axis by an elastic restoring force generated by contraction in the common axis direction.

The first core member a rotates in the rotational direction D faster than the discharge gear B and the compression coil spring V with respect to the discharge gear B that rotates in the input rotational direction D and the compression coil spring V that rotates integrally with the discharge gear B, whereby the slip clutch mechanism F can generate a slip between the discharge gear B and the compression coil spring V and the first core member a.

In this embodiment, the winding direction L of the compression coil spring V is set to be opposite to the rotational direction D input to the discharge gear B and the first core means a. In this embodiment, as shown in fig. 7 in particular, the compression coil spring V is wound rightward when viewed from the end. In other words, the compression coil spring V constituting the slip clutch mechanism F is configured such that the notched end surface V21 of the distal end portion V2 faces in the same direction as the rotational direction D input to the release gear B and the first core member a.

Next, the operation of the transfer tool in the present embodiment will be described.

In the transfer tool, when the transfer belt T having the back surface abutting against the transfer roller H1 of the transfer head H moves while abutting against the transfer target surface, the transfer belt T is sequentially paid out from the reel 3 for paying out. At the same time, the rotational force of the reel 3 for unwinding generated by the movement of the transfer belt T is transmitted to the reel 4 for winding via the reel linkage G, and the transfer belt T is wound on the reel 4 for winding.

The rotational force of the reel 3 for payout is transmitted to the first core member a, and is also transmitted to the payout gear B via the slip clutch mechanism F. The rotational force of the reel 3 for unwinding is transmitted to the reel 4 for winding, which is fitted to the second core member E, via the winding gear N engaged with the unwinding gear B. The take-up reel 4 that has obtained the rotational force takes up the transfer belt T.

When the remaining amount of the transfer belt T wound around the reel for pay-out 3 decreases and the amount of the transfer belt T wound around the reel for take-up 4 increases, the rotation speed of the reel for pay-out 3 increases and the rotation speed of the reel for take-up 4 also increases. As a result, the tension of the transfer belt T between the winding reel 4 and the discharging reel 3 gradually increases, and the rotational force transmitted from the discharging reel 3 to the first core member a also increases in proportion to the tension of the transfer belt T.

When the rotational force increases to a predetermined value or more, the rotational force of the first core means a becomes larger than the frictional force between the first core means a and the compression coil spring V, and the first core means a slides in the rotational direction D with respect to the compression coil spring V. That is, the first core member a rotates faster than the compression coil spring V with respect to the input rotation direction D.

In this embodiment, the winding direction L of the compression coil spring V is set to be opposite to the rotational direction D input to the discharge gear B and the first core means a. Therefore, when the spring receiving surface m of the first core member a slides with respect to the distal end portion V2 of the compression coil spring V, the notch end surface V21 of the distal end portion V2 does not catch on the spring receiving surface m.

That is, a right-angled portion that is easily caught by a smooth surface is easily formed at the peripheral edge of the cut end surface V21 of the compression coil spring V. If the rotation direction of the smooth surface is rotated in the direction opposite to the direction in which the notch end surface v21 faces, the smooth surface is easily caught by the peripheral edge portion of the notch end surface v 21.

However, in this embodiment, the compression coil spring V is configured such that the cut end surface V21 does not engage with the spring receiving surface m in the winding direction L. The spring receiving surface m rotates in the same direction as the direction in which the notch end surface V21 of the compression coil spring V faces. Therefore, when the first core means a and the compression coil spring V rotate relative to each other, the first core means a can slide smoothly with respect to the compression coil spring V.

As described above, the transfer tool according to the present embodiment winds the transfer belt T paid out from the reel 3 for paying out onto the reel 4 for winding up via the transfer head H.

Further, the present invention is provided with a spool linkage mechanism G for causing a slip between the first core member a and the discharge gears B as two rotational elements constituting the spool linkage mechanism G and rotating around the common shaft, and a slip clutch mechanism F for optimizing the tension of the transfer belt T, the spool linkage mechanism G linking the rotations of the reel 3 for discharge and the reel 4 for take-up.

The slip clutch mechanism F includes a compression coil spring V having a base end side fixed to the release gear B as one of the rotating elements and a tip end elastically brought into sliding contact with a spring receiving surface m provided on the first core member a as the other rotating element in a posture orthogonal to the common axis by an elastic restoring force generated by contraction in the common axis direction. Then, the winding direction L of the compression coil spring V is set to be opposite to the rotational direction D input to the first core means a and the discharge gear B.

Therefore, the transfer tool can be provided in which the compression coil spring V constituting the slip clutch mechanism F and the first core member a can be brought into sliding contact with each other appropriately.

That is, the slip clutch mechanism F is configured using an elastic restoring force generated by the axial contraction of the compression coil spring V. The winding direction L of the compression coil spring V is opposite to the rotational direction D of the input to the first core means a.

Therefore, when the first core means a slides with respect to the compression coil spring V, the distal end portion V2 of the compression coil spring V is less likely to catch on the spring receiving surface m of the first core means a, and smooth relative rotation, that is, sliding operation can be achieved.

Since the base end portion V1 side of the compression coil spring V is fixed to the discharge gear B, the portions that slidably abut against each other are collected on the tip end portion V2 of the compression coil spring V and the spring receiving surface m of the first core member a.

Therefore, the transfer tool is excellent in the degree of freedom of design, which not only can easily perform torque control for generating a slip between the discharge gear B and the first core means a, but also can appropriately suppress abrasion and deterioration of members that may be generated by friction.

The discharge gear B as one of the rotational elements includes a spring holding member B2 pressed against the outer peripheral surface V11 of the base end V1 of the compression coil spring V.

Therefore, the base end portion V1 side of the compression coil spring V can be supported by the discharge gear B by being pressed in the radial direction by the spring holding member B2, and therefore the compression coil spring V can be smoothly attached to the discharge gear B.

The reel linkage mechanism G includes: a first core member a fitted to the inner periphery of the reel 3 for unwinding; a discharge gear B as a first interlocking gear that rotates together with the first core means a; a take-up gear N as a second coupling gear meshed with the pay-out gear B; and a second core member E that rotates together with the winding gear N and is fitted to the inner periphery of the winding spool 4. The slip clutch mechanism F is provided between the first core member a and the release gear B.

Therefore, the slip clutch mechanism F capable of appropriately adjusting the tension acting on the transfer belt T is provided on the reel 3 side for unwinding, and can appropriately function.

The spring holding member B2 is a cylindrical member provided at the center of the discharge gear B. The base end V1 of the compression coil spring V is press-fitted into a spring holding member B2 provided in the discharge gear B.

Therefore, the slip clutch mechanism F can be configured appropriately by attaching the compression coil spring V to the discharge gear B by press fitting.

The present invention is not limited to the embodiments described in detail above.

The transfer tool may have any configuration as long as it is configured to transfer the transferred material to the surface to be transferred. In other words, the transfer material is not limited to the paste shown in the present embodiment, and may be, for example, a correction agent (correction tape) for correction or a decorative agent (decoration tape) for decoration.

The transfer tool is not limited to the so-called replacement type transfer tool as shown in the above-described embodiments. For example, as another transfer tool, a so-called disposable type transfer tool which cannot be used later when the transfer belt is used up may be used.

The slip clutch mechanism may be any mechanism that generates slip between two rotating elements that constitute the reel interlocking mechanism and rotate around the common shaft, thereby adjusting the tension of the transfer belt. For example, one of the rotational elements constituting the slip clutch mechanism may be a winding gear as the second gear, and the other rotational element may be a second core member configured to be rotatable with respect to the winding gear.

The one rotating element to which the base end side of the compression coil spring is fixed is not limited to the discharge gear, and may be the first core member. In other words, the other rotational element is not limited to the first core member, and may be a release gear. The rotational direction input to the discharge gear at this time is the same as that in fig. 8, that is, the direction determined when the first core member is positioned closer to the front side than the discharge gear and viewed.

The spring holding member of one of the rotary elements is not limited to be in pressure contact with the outer peripheral surface of the base end portion of the compression coil spring, and may be in pressure contact with at least one of the outer peripheral surface and the inner peripheral surface.

The winding direction of the compression coil spring may be set to a direction opposite to the rotational direction input to the rotational element, and it is needless to say that the left winding can be performed.

The specific configuration of each portion is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.

Claims (6)

1. A transfer tool in which a transfer belt unwound from an unwinding spool is wound up to a winding spool via a transfer head,

the transfer tool includes a reel linkage mechanism for linking rotation of the reel for unwinding and the reel for winding, and a slip clutch mechanism for generating slip between two rotating elements constituting the reel linkage mechanism and rotating around a common shaft to optimize tension of the transfer belt,

the slip clutch mechanism includes a compression coil spring having a base end side fixed to one of the rotary elements and a tip end elastically brought into sliding contact with a spring receiving surface provided on the other rotary element in a posture orthogonal to the common axis by an elastic restoring force generated by contraction in the direction of the common axis,

the winding direction of the compression coil spring is set to be opposite to the rotation direction input to the rotation element.

2. The transfer tool according to claim 1,

the one rotating element includes a spring holding member that is pressed against at least one of an outer peripheral surface and an inner peripheral surface of a base end portion of the compression coil spring.

3. The transfer tool according to claim 1 or 2,

the reel linkage mechanism is provided with: a first core member fitted to an inner periphery of the reel for payout; a first linkage gear rotating together with the first core member; a second linkage gear meshed with the first linkage gear; and a second core member that rotates together with the second linkage gear and is fitted to the inner periphery of the take-up spool,

the slip clutch mechanism is provided between the core member and the interlocking gear.

4. The transfer tool according to claim 3,

the one rotational element is the first interlocking gear, and the other rotational element is the first core member.

5. The transfer tool according to claim 4,

the spring holding member is a cylindrical member provided at a central portion of the first interlocking gear, and a base end portion of the compression coil spring is press-fitted into the spring holding member.

6. A transfer tool in which a transfer belt unwound from an unwinding spool is wound up to a winding spool via a transfer head,

the transfer tool includes a reel linkage mechanism for linking rotation of the reel for unwinding and the reel for winding, and a slip clutch mechanism for generating slip between two rotating elements constituting the reel linkage mechanism and rotating around a common shaft to optimize tension of the transfer belt,

the slip clutch mechanism includes a compression coil spring having a base end side fixed to one of the rotary elements and a tip end elastically brought into sliding contact with a spring receiving surface provided on the other rotary element in a posture orthogonal to the common axis by an elastic restoring force generated by contraction in the direction of the common axis,

the compression coil spring is rotatable in a direction in which the cut end surface on the tip end side does not engage with the spring receiving surface.

Images