JPH0775834B2 - Feeder - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a feeding device.

[0002]

2. Description of the Related Art Conventionally, a feeding device is used, for example, in a sheet cutter device, and moves a carriage equipped with a cutter. In the sheet cutter device described in Japanese Patent Laid-Open No. 2-131895, (a) a carriage that rotatably supports the cutter, and (b) a carriage that can move in a direction substantially perpendicular to the center line of the cutter. A guide member for supporting, (c) a toothed pulley provided with teeth on its outer peripheral surface, at least one each being provided at positions separated in the longitudinal direction of the guide member, at least one of which is rotationally driven by a drive device; ) With teeth engaging the teeth of those toothed pulleys,
There is used a feeding device including a toothed belt wound around a toothed pulley, and (e) means for preventing disengagement of teeth between the toothed belt and the toothed pulley.

[0003]

This feeding device has the drawbacks that many parts are required, the structure is complicated, and the manufacturing cost is high. The invention of claim 1 has as its object to obtain a feeder having a small number of parts, a simpler structure, and a lower manufacturing cost. Claim
The invention of claim 2 is a coil member supporting member, and the invention of claim 3 is a coil member supporting member.
Ill member support member and carriage guide
Aim to reduce cost by making it suitable for mass production
This was done as an issue.

[0004]

SUMMARY OF THE INVENTION The gist of the invention of claim 1 is that the feeding device has a shape in which a wire is spirally wound without a core material.
-Shaped coil member, drive device for rotating the coil member around its longitudinal centerline , and extending along substantially the entire length of the coil member, the coil member being rotatable
And a coil member supporting member that is supported substantially non- bendably from the outer peripheral side, and a coil member that is relatively immovably engaged in the longitudinal direction from one side of the coil member and that prevents the coil member from rotating. It is intended to include a carriage having an allowable engaging portion and a carriage guide that supports the carriage so as to be linearly movable in a direction parallel to the longitudinal direction of the coil member. The gist of the invention of claim 2 is a coil member support member.
Equipped with a circular groove whose cross-sectional shape is more than semi-circular
Grooved member, and the coil member can be rotated in the circular groove.
Noh fits. The gist of the invention of claim 3 is
Install the carriage guide with a non-circular groove whose cross-sectional shape is non-circular.
It is equipped with a groove-shaped member and its non-circular groove
At least a part of them is fitted so that they can slide and cannot rotate relative to each other.
Groove-shaped member that constitutes a carriage guide and coil member support
With the groove-shaped member that constitutes the member, the circular groove is a non-circular groove
Carriage's engaging part
Project from the part of the carriage that fits in the non-circular groove.
From the opening of the circular groove into the circular groove,
It is to be a projection that engages with.

[0005]

In the feeding device according to the first aspect of the invention, the carriage is moved along the carriage guide by the drive device rotating the coil member around its longitudinal center line. The moving direction of the carriage is determined by the winding direction and the rotating direction of the coil member. For example, when the drive device rotates the coil member with the right winding direction clockwise when viewed from the drive device side, the carriage is moved toward the drive device side along the carriage guide. The moving speed of the carriage is determined by the number of rotations of the driving device and the pitch of the coil members. Of coil member
Insert the rod inside to support the coil member from the inner peripheral side.
It is also possible to make it. But in this case the coil member
In order to prevent the bending of the
The diameter of the rod, and
The winding diameter of the ill member becomes large. The engaging part of the carriage
Since the coil member is engaged from one side,
The shape itself should be simpler than that of a normal female thread.
However, it is possible to bend the coil member
Inevitably, the flexural rigidity must be increased.
And are necessary. And the winding diameter of the coil member is large
If it gets harder, the torsional rigidity will decrease.
The diameter must be increased. Also, the rod is a coil
By being arranged inside the member, the engagement of the carriage
The joint cannot be deeply engaged with the coil member,
It is easy for the coil to come off.
The wire diameter of the material must be large, and it is large and heavy.
It will be On the other hand, the coil member support member
Of the coil member when supporting the
Since there is no need to insert a rod on the side,
The diameter can be reduced and the wire can be twisted while ensuring the rigidity.
The diameter can be reduced. Also, there is a rod inside
Since it does not exist, the engaging part of the carriage should be deep in the coil member.
Can be engaged, even if the wire diameter of the coil member is reduced
There is no risk of disengagement with the engaging part of the carriage,
The ridge can be reliably sent.

According to the second aspect of the invention, the coil member support is provided.
The holding member is a channel-shaped member having a circular groove. Circular groove
Since the cross-sectional shape exceeds the semicircle, the coil
The material can be supported from the outer peripheral side without being bent substantially.
It Such channel members can be extruded or drawn.
It can be mass-produced easily. The invention of claim 3
The carriage guide has a non-circular cross section.
A channel member having a circular groove, the channel member being claimed
Structured integrally with a groove-shaped member having a circular groove according to the invention of Item 2.
To be done. The circular groove should be open on the inner surface of the non-circular groove.
Therefore, from the part that is fitted in the non-circular groove of the carriage
The protrusion as a protruding engaging portion is inserted into the circular groove from the opening of the circular groove.
It can plunge into and easily engage the coil member. like this
The carriage guide and coil member support
Easily mass-produce long longitudinal members by extrusion or drawing
can do. Also, the carriage guide and coil section
By being integrated with the material support member, they reinforce each other.
It will be in a suitable state.

[0007]

According to the invention of claim 1 , parts such as a plurality of toothed pulleys, toothed belts, and engagement / disengagement prevention means can be removed from the conventional feeding device, and the structure is simple and the cost is low. You can get a cheap feeder. Further, the moving speed of the carriage can be easily changed by changing the pitch of the coil members. Further, by supporting the coil member from the outer peripheral side by the coil member supporting member, the bending rigidity and the torsional rigidity of the coil member are enhanced, and the carriage is stably fed by a small coil member having a small winding diameter and wire diameter. You can According to the invention of claim 2,
For example, the coil member support member can be extruded or drawn.
Cost can be reduced because the structure can be easily mass-produced.
Is possible. According to the invention of claim 3, the coil member support
The holding member and the carriage guide are integrated and extruded or
Since it can be easily mass-produced by drawing,
The manufacturing cost can be reduced. Also, by integration
Coil member support member and carriage guide
Since they have a strong relationship, they are thin while ensuring sufficient rigidity.
Cost reduction from this point as well.
Is possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which a feeding device is applied to a sheet cutter device as one embodiment of the present invention will be described in detail below with reference to the drawings. In the sheet cutter device of FIGS. 1 to 3, 10 is a carriage, 12 is a frame, 14 is a motor as a driving device, and 16 is a coil member. Carriage 10
Is a bottomless box-shaped member having a circular blade 22, a sleeve 24, a rubber roller 26, a spring 28, and a shaft 3.
0, a washer 32 are supported and slidably fitted to the frame 12.

A cutting edge 34 is formed on the periphery of the circular edge 22,
A hole 36 is formed in the center. The sleeve 24 has a large diameter portion and a small diameter portion, and the large diameter portion has a rubber roller 26.
The circular blade 22 is fitted in the hole 36 at the small diameter portion and is caulked. Further, the shaft 30 is press-fitted into the sleeve 24, and the rubber roller 26, the sleeve 24, the circular blade 22, and the shaft 30 are integrated. Axis 30
Has one end inserted into a hole 38 formed in the front wall of the carriage 10 and the other end inserted into an elongated hole 40 formed in the rear wall. The long hole 40 extends long in the horizontal direction, and allows the shaft 30 to rotate a small angle in the horizontal plane about the portion fitted in the hole 38.

The front wall of the carriage 10 of the shaft 30 and the circular blade 2
A spring 28 and a washer 32 are fitted in a portion between the two. In the spring 28, the circular blade 22 is the fixed blade 4
The shaft 30 is biased so as to come into contact with the shaft 2, and the shaft 30 is prevented from coming out of the elongated hole 40 of the carriage 10. Further, a gap is formed between the sleeve 24 and the rear wall of the carriage 10 so that the sleeve 24 does not get in the way when the shaft 30 moves in the elongated hole 40.

Further, both side walls of the carriage 10 have a stepped shape in which the heights of the rear half portion and the front half portion are different, and the stepped portion is a shoulder 44. Dogs 48 and 49 are projected from the lower end of the front half of the side wall at right angles to the side wall, and these dogs 48 and 49 are left sensor 51 and right sensor 5 respectively.
The left moving end and the right moving end of the carriage 10 are detected by acting on the respective two detection end portions 53 and 54. Further, two bosses 56 are provided on the outer surface of the rear wall so as to project as shown in FIG. 4, and these bosses 56 serve as engaging portions that engage with the coil member 16 in a direction perpendicular to the longitudinal direction thereof. Has become.

The frame 12 has a longitudinal shape extending along the longitudinal direction of the coil member 16 and is provided with a guide frame 58. Both ends of the lower surface of the guide frame 58 in the longitudinal direction are provided with a spacer 60 and the fixed blade 4, respectively.
It is fixed to the attachment frame 62 via the space 2 and a space for sending the sheet is formed between the guide frame 58 and the fixed blade 42. The left sensor 51 and the right sensor 5 are respectively provided at the left end and the right end of the mounting frame 62.
2 is fixed. A side frame 64 is attached to one end of the guide frame 58, and a motor attachment frame 66 and the motor 14 are attached to the other end. The fixed blade 42, the guide frame 58, the mounting frame 62, the side frame 64, the motor mounting frame 66, etc. constitute the frame 12.

The guide frame 58 is a member in which a circular groove 70 serving as a coil member supporting member is formed at the bottom of a rectangular groove 68 serving as a carriage guide. The latter half of the carriage 10 is fitted in the square groove 68, and the engagement between the shoulder 44 and the engaging wall 72 hanging from the upper front end of the square groove 68 prevents the carriage 10 from being separated from the square groove 68. ing. Further, the rubber roller 26 is in contact with the groove wall surface 76 on the lower side of the rectangular groove 68, and when the carriage 10 moves, the rubber roller 26 is rotated by the frictional force between the rubber roller 26 and the groove wall surface 76, and the circular blade 22. Is rotated.

The circular groove 70 covers the outer circumference of the coil member 16 wider than the half circumference to substantially prevent the coil member from moving in the radial direction.
The boss 56 is engaged in the longitudinal direction of the coil member 16 so as not to move relatively. One end of the coil member 16 is a free end, and the other end is concentrically fixed to a drive shaft 80 of the motor 14 via a holder 78. Here, the coil member 1
Since the winding direction of 6 is right, when the motor 14 rotates the coil member 16 clockwise, the carriage 10 is moved to the right, and when it is rotated counterclockwise, the carriage 10 is moved to the left.

In the sheet cutter device configured as described above, the guide frame 58 and the fixed blade 42 with the carriage 10 positioned at one of the left and right ends (here, the left end) in FIG. The sheet S is inserted into the gap formed between the fixed blade 42 and the guide frame 58 by the spacer 60 from the wedge-shaped gap formed between the two, and is fed in the direction shown by the arrow in FIGS. After the sheet S protrudes from the tip of the fixed blade 42 by an appropriate length, the feeding is stopped.

Next, the motor 14 rotates the coil member 16 in the clockwise direction, whereby the carriage 10 is moved to the right and the circular blade 22 is rotated.
The sheet S is cut by the cutting blade 34 and the tip of the fixed blade 42. After the cutting of the sheet S is completed, the dog 4 of the carriage 10
When 9 and the detection end 54 of the right sensor 52 come into contact with each other, it is detected that the carriage 10 has reached the right end, the driving of the motor 14 is stopped, and the carriage 10 is stopped at the right end position. Next, when the sheet S reaches the position to be cut, the motor 14 rotates the coil member 16 counterclockwise, and the carriage 10 is moved to the left.

When the carriage 10 moves as described above, the shaft 30 is rotated by a small angle along the elongated hole 40 by the frictional force between the circular blade 22 and the rubber roller 26 against the frame 12, and is fitted into the shaft 30. The circular blade 22 is tilted by a small angle with respect to the fixed blade 42. That is, the leading side of the circular blade 22 and the fixed blade 42 are in close contact with each other, and the trailing side and the fixed blade 42 are separated from each other, whereby the sheet S is satisfactorily cut.

As described above, in the feeding device according to the present invention,
Carriage 1 by rotating coil member 16
Since 0 is moved, the number of parts can be reduced and the structure can be simplified.

Further, in this embodiment, the carriage 1
In order to increase the moving speed of 0, the pitch of the coil member 16 is made larger than that of a normal coil spring. By increasing the pitch, the moving speed of the carriage 10 can be increased without increasing the number of rotations of the motor 14, so that an inexpensive motor can be used. Further, in order to increase the rigidity of the coil member 16, the average winding diameter D
The ratio of the wire diameter to the wire diameter d is smaller than that of a normal coil spring, and the wire used has excellent strength and hardness. By reducing the average winding diameter D, the bending rigidity and the torsional rigidity of the coil member 16 can be increased.

Further, since the coil member 16 is fitted in the circular groove 70 and rotated in the circular groove 70, the bending deformation of the coil member 16 is less likely to occur and the coil member 16 and the carriage 10 are engaged with each other. It became hard to come off.

The coil member support member does not necessarily have to have a circular groove shape, but may have a polygonal groove shape. Any shape may be used as long as it allows rotation of the coil member while substantially preventing movement in the radial direction, and may have a shape capable of contacting at least three portions of the coil member over a half circumference.

The number of bosses on the carriage is not limited to two, but may be one or three or more. Since the engaging portion of the carriage may have a shape capable of engaging the coil member relatively immovably in the longitudinal direction of the coil member and allowing the coil spring to rotate, it is not limited to the illustrated boss, As shown in FIG. 5, it is also possible to use an ear piece 86 or the like having a through hole 84 that allows passage of the coil member winding.

Although not illustrated, the present invention can be implemented in variously modified and modified forms based on the knowledge of those skilled in the art without departing from the scope of the claims.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a sheet cutter device to which a feeding device according to an embodiment of the present invention is applied.

FIG. 2 is a front view (partially sectional view) of the above embodiment.

FIG. 3 is an enlarged view of an AA cross section of the above embodiment.

FIG. 4 is a rear perspective view of the carriage used in the above embodiment.

FIG. 5 is a plan sectional view showing a part of another embodiment of the present invention.

[Explanation of symbols]

 10 Carriage 14 Motor 16 Coil Member 56 Boss 58 Guide Frame 68 Square Groove 70 Circular Groove

Claims (3)

[Claims] 1. A shape in which a wire is spirally wound without a core material.
A coil member, a drive device for rotating the coil member around a longitudinal centerline thereof, and a coil portion extending along substantially the entire length of the coil member.
A coil member supporting member that supports the material from the outer peripheral side in a rotatable and substantially non-curvature manner , and engages the coil member from one side of the coil member in a relatively immovable manner in the longitudinal direction, and rotates the coil member. And a carriage guide that supports the carriage so as to be linearly movable in a direction parallel to the longitudinal direction of the coil member. 2. The coil member support member has a cross-sectional shape.
A channel-shaped member having circular grooves that form a circle that exceeds a semicircle.
The coil member is rotatably fitted in the circular groove.
The feeding device according to claim 1, wherein the feeding device is provided. 3. The carriage guide has a non-cross sectional shape.
A channel-shaped member having a circular non-circular groove, the non-circular
At least a part of the carriage is slidable in the groove
It is fitted so that it cannot rotate relative to it, and constitutes its carriage guide.
A groove shape in which the groove shape member forms the coil member support member
A member and the circular groove opens to the groove inner surface of the non-circular groove.
In a state where the engaging portion is the carriage.
Of the circular shape protruding from the portion fitted in the non-circular groove of
From the opening of the groove into the circular groove, the coil member and
The feeding device according to claim 2, wherein the feeding device is a protrusion that engages with the feeding device.