JPH10181964A - Supporting reel for belt-shaped unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a supporting reel for a belt-shaped unit whereby a center of a roll can be always conformed to a prescribed position of a support shaft, for instance, the center, even when a roll width of the belt-shaped unit is changed. SOLUTION: When a second slide member 36 is manually moved to slide along a support shaft 32 to either of the right or left in the drawing, a second rack 50 is also moved in the same direction as the manually moving direction, a pinion 46 is rotated. By rotating this pinion 46, a first rack 48 is moved in an opposite direction to the second rack 50, a first slide member 34 is associated to be slidingly moved. Accordingly, a first slide member 34 and the second slide member are slidingly associated, with the pinion 46 at the center in a direction mutually approaching/separating. Consequently, the first/second slide members 34, 36 are moved symmetrically always relating to the center of the pinion 46. Accordingly, in the case of mounting a roll in a supply reel 14, a center line of the roll 15 is surely set to the position of the pinion 46.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt supporting reel, and more particularly to a belt supporting reel used as a supply reel of a label printer or the like.

[0002]

2. Description of the Related Art A band-shaped backing sheet on which a label to be printed by a label printer is temporarily attached is supplied from a supply reel, printed by a print head unit, and taken up by a take-up reel. When a conventional supply reel attaches a roll on which a band-shaped backing sheet is wound to a support shaft, one end surface of the roll is brought into contact with a fixed reference surface, and a detachable stopper is attached to the other end surface of the roll. Is sandwiched from both sides.

[0003]

However, in the structure of the conventional belt-shaped supply reel, when the roll is mounted on the support shaft, the fixed reference surface is used as a reference. The center of the roll and the center of the print head are shifted. For example, when the width of the roll of the band-shaped backing paper is small, it does not pass through the center of the print head, so that only the end of the print head is frequently used for printing. This has the disadvantage that stable printing cannot be performed.

The conventional supply reel also has a disadvantage that the stopper is easily lost when the stopper is removed from the supply reel body. The present invention has been made in view of such circumstances, and even if the width of a roll of a strip changes, the center of the roll can always be aligned with a predetermined position of a support shaft, for example, the center. The purpose is to provide.

[0005]

In order to achieve the above object, the present invention provides a belt-shaped support reel for supporting a roll on which a belt is wound in a rewindable manner. A support shaft that is inserted into the support shaft to support the roll, and is slidably supported by the support shaft along the axial direction thereof, sandwiches both side surfaces of the roll, and has one formed to have a size through which the support hole of the roll passes. A pair of slide members, and a slide interlocking mechanism that slides the pair of slide members in the direction of approaching / separating from each other,
A lock mechanism provided on at least one of the slide members to lock the slide of the pair of slide members.

According to the present invention, when attaching the belt-shaped body wound in a roll shape to the support reel of the band-shaped body, after inserting the support hole at the center of the roll into the support shaft, the pair of slide members are connected to the support shaft. The roll is slid along the support shaft of the belt-like body to hold the roll from both end surfaces. Therefore, even if the width of the roll changes, the roll can be mounted so that the center of the roll is always located at a predetermined position of the support shaft, for example, the center. Therefore, if this support reel is used as a supply reel of a label printer, the center of the roll can always be made to coincide with the center of the print head.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a belt-shaped support reel according to the present invention will be described below in detail with reference to the accompanying drawings. As a preferred embodiment, a case will be described in which the belt-shaped support reel of the present invention is applied as a band-shaped backing paper supply reel of a label printer. This label printer is
This is to print on a label temporarily attached to a band-shaped backing material wound in a roll shape.

FIG. 1 is a front view showing the entire configuration of the label printer. As shown in FIG.
Inside, a side plate 12 is erected vertically, and the side plate 1
2, other members of the label printer 10 are attached. The roll 1 wound on the supply roll 14 for the band-shaped backing paper
5 and a band-shaped backing sheet 16 on which a number of labels are temporarily attached at predetermined intervals,
And is conveyed to the print head 20 while engaging with the guide roller 18. On the other hand, the ink ribbon 24 wound around the ink ribbon supply reel 22 is also conveyed to the print head 20. The ink ribbon 24 and the band-shaped mount 16 conveyed to the print head 20 are sandwiched between the print head 20 and the platen roller 26, and necessary printing is performed on the label temporarily attached to the band-shaped mount 16. Thereafter, the band-shaped backing paper 16 is wound up on a band-shaped backing winding reel 28, and the ink ribbon 24 is wound on an ink ribbon winding reel 30. The rotating shaft of the band-shaped mount take-up reel 28 is connected to a rotary drive source (not shown), and conveys the band-shaped mount 16 by the driving force of the rotary drive source.

Next, the structure of the supply roll 14 for the band-shaped backing paper will be described. FIG. 2 is a perspective view of the supply reel 14 for the band-shaped mount, and FIG. 3 is a side view. As shown in these drawings, the supply reel 14 for the band-shaped backing material mainly includes the support shaft 32.
, A first slide member 34 and a second slide member 3
And 6. The support shaft 32 is formed in a U-shape in cross section by a horizontal plate 38 and a pair of vertical plates 40.
2 is supported at one end by the side plate 12. Further, the support shafts 3 are provided on the left and right sides of the center of the horizontal plate 38, respectively.
Three long holes 41A and 41B are formed in parallel along two axial directions. Also, one long hole 43A and one long hole 43B are formed in parallel on the left and right sides of the center of the vertical plate 40 along the axial direction of the support shaft 32, respectively.

The first slide member 34 is formed by a long plate having a U-shaped cross section, and has a support shaft 32
Is formed. The opening 42
There are provided engagement pins 35, 35 which respectively penetrate and engage with two of the three long holes 41A from the upper edge. An engagement pin 37 is provided which penetrates and engages the elongated hole 43A from the side edge of the opening 42. Thereby, the first slide member 34 can slide along the elongated holes 41A and 43A. The length of the first slide member 34 in the vertical direction is formed longer than the diameter of the roll 15 in order to prevent the band-shaped backing paper 16 from coming loose.

The second slide member 36 includes a support shaft 3
U-shaped slide table 3 arranged to straddle 2 from above
An L-shaped plate 36B having an L-shaped cross section is fixed on 6A. Further, on the lower surface of the slide base 36A, engagement pins (not shown) which penetrate and engage with two of the three long holes 41B are provided similarly to the first slide member 34. On the side surface of the slide base 36A, two engaging pins 39, 39 that penetrate and engage with the elongated hole 43B are arranged in parallel along the elongated hole 43B. Thereby, the second slide member 3
6 can slide along the long holes 41B and 43B. Further, the length of the L-shaped plate 36B is formed so as to fit the support hole 15A of the roll 15, and
The character board 36B is provided with a lever 44 of a lock mechanism described later.

Next, a slide mechanism for sliding the first slide member 34 and the second slide member 36 will be described. FIG. 4 is a perspective view of the belt-shaped backing supply reel 14 as viewed from below. As shown in the figure, a pinion 46, a first rack 48, and a second rack 50 are provided on the lower surface of the horizontal plate 38 of the support shaft 32. The pinion 46 is rotatably attached to the center of the lower surface of the horizontal plate 38. The first rack 48 is provided in parallel with the elongated hole 41 </ b> A with one end thereof being supported by an engaging pin 35 provided on the first slide member 34, and meshes with the pinion 46. Similarly, one end of the second rack 50 is the second rack 50.
The slide member 36 is provided in parallel with the elongated hole 41B while being supported by an engagement pin provided on the slide member 36. Further, the first and second racks 48 and 50 are formed with elongated guide holes 48A and 50A in the longitudinal direction of the rack, and the guide pins 38A and 38A projecting from the lower surface of the horizontal plate 38 of the support shaft 32 are formed. Engage. As a result, when the second slide member 36 is manually slid to the left or right along the support shaft 32 in the drawing, the second rack 50 also moves in the same direction as the manual direction, and the pinion 46 rotates. Due to the rotation of the pinion 46, the first rack 48 moves in a direction opposite to the second rack 50, and the first slide member 34 slides in conjunction therewith. Therefore, the first slide member 34 and the second slide member 36 slide in conjunction with each other in the direction of approaching / separating with the pinion 46 at the center. Therefore, the first and second slide members 34 and 36 always move symmetrically with respect to the center of the pinion 46. Therefore, when the roll 15 is attached to the supply reel 14, the center line 47 of the roll 15 is always set to the position of the pinion 46 (see FIG. 3).

Next, the lock mechanism for sliding the first and second slide members will be described. FIG. 5 is a diagram illustrating details of the second slide member. In the drawing, the lever 44 in the lowered state is indicated by a solid line, and the lever 44 in the raised state is indicated by a two-dot chain line. A pin 52 penetrates the base end of the lever 44 that is formed in a U-shape.
Slide base 36A, L-shaped plate 36B, elongated hole 4 of support shaft 32
An upper end of a rod 54 protruding from a through hole penetrating the 1B and the second rack 50 is supported, and a stopper ring 55 is provided at a lower end of the rod 54.
Further, a spring 58 is fitted into the rod 54 between the lower surface of the second rack 50 and the stopper ring 55.

The distance between the pin 52 and the horizontal plate 38 when the lever 44 is raised is determined by the distance between the pin 5 and the horizontal plate 38 when the lever 44 is lowered.
2 is slightly longer than the distance between the horizontal plate 38 and the lever 4
When the rod 4 is raised, the rod 54 is pulled directly upward, and the spring 58 contracts. As a result, the second slide member 36 and the horizontal plate 38
The second rack 50 is pressed by the lever 44 and the spring 58, and the sliding movement of the second slide member 36 is locked. Conversely, when the lever 44 is lowered, the rod 54
And the spring 58 is loosened. As a result, the lock is released, and the slide movement is freely performed. Also, the lever 44
Is formed to have a length substantially equal to the radius of the roll 15 longer than the second slide member 36, and a tip end portion 44 A thereof is bent in a crank shape toward the first slide member 34. Thus, even if the second slide member 36 is formed small enough to be inserted into the support hole 15A of the roll 15, when the roll 15 is supported on the support shaft 32, one end side of the roll 15 is held by the lever tip 40A. Can be suppressed. Therefore, it is possible to prevent the band-shaped mount 16 from being loosened.

Next, the operation of the belt supporting reel of the present invention configured as described above will be described with reference to an example of a supply reel of a label printer. When attaching the roll 15 of the band-shaped backing paper 16 to the supply reel 14, first, if the lever 44 is raised, lower the lever 44 to unlock the slide movement. Thus, the support shaft 32 can be inserted into the support hole 15A of the roll 15 without being disturbed by the lever 44. Next, the second slide member 36 is manually operated to move the first and second slide members 34, 36 in a direction in which they are separated from each other. At this time, the first slide member 34 moves to the left, opposite to the second slide member 36. When the second slide member 36 reaches the right end of the support shaft 32, the roll 15 is moved to the first and second slide members 34 of the support shaft 32,
Fit between 36. Next, the second slide member 34 is manually operated to move along the support shaft 32 in a direction in which the first and second slide members 34 and 36 approach. As a result, the roll 15 is moved to the first and second slide members 34, 36.
Between both sides.

The roll 15 is provided with the first and second slide members 3.
If it is completely clamped by 4 and 36 and cannot move in the direction of the support shaft 32, the lever 44 is raised to lock the sliding movement. At this time, the center of the pinion 46 is located on the center line 47 of the roll 15 (see FIG. 3).
The mounting of No. 5 on the supply reel 14 is completed.

[0017]

As described above, according to the belt-shaped support reel of the present invention, the width of the belt is changed by providing a pair of slide members slidable with respect to the support shaft of the belt. However, the center in the axial direction can always be mounted at the same position.

[Brief description of the drawings]

FIG. 1 is a front view showing the entire configuration of a label printer.

FIG. 2 is a perspective view illustrating a configuration of a supply reel.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a perspective view of the supply reel as viewed from below.

FIG. 5 is a diagram illustrating details of a second slide member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 14 ... Supply reel for strip-shaped mount 15 ... Roll 16 ... Strip-shaped mount 20 ... Print head 32 ... Support shaft 34 ... First slide member 36 ... Second slide member 44 ... Lever 46 ... Pinion 48 ... First rack 50 ... 2nd rack 52 ... pin

Claims (4)

[Claims] 1. A support reel for a strip for supporting a roll around which a strip is wound, the support shaft being inserted into a support hole at the center of the roll to support the roll, and the support shaft. A pair of slide members, which are slidably supported along the axial direction thereof, sandwich both sides of the roll, and one of which is formed to have a size through which a support hole of the roll passes, and a pair of slide members approaching each other. A belt-related support reel, comprising: a slide interlocking mechanism that slides in conjunction with the separating direction; and a lock mechanism that is provided on at least one of the slide members and locks the slide of the pair of slide members. . 2. The support reel according to claim 1, wherein said support reel is a supply reel for supplying a band-shaped backing sheet to which a label of a label printer is temporarily attached. 3. The belt-shaped support reel according to claim 1, wherein said slide interlocking mechanism is formed by meshing a pair of racks and one pinion. 4. The lock mechanism is provided on a front slide member of the pair of slide members through which the roll support hole passes, and the lock mechanism has a swingable lever longer than the slide member. The support reel according to claim 1, further comprising a member, wherein the slide member is locked when the lever member is set up.