阅读说明：本技术 3d笔 (3D pen ) 是由 李昌桓 于 2020-10-22 设计创作，主要内容包括：本发明涉及可容易选择多种颜色的料丝(1)来使用的新的结构的3D笔。对于本发明的3D笔而言,用户可使调节杆(25)侧向转动来使驱动马达(24)与不同的移送辊(22)相连接,从而可选择性地向前方移送不同的多个料丝(1)来排出。因此,具有结构非常简单,可容易选择多种颜色的料丝(1)来制造多种颜色的物体的优点。(The invention relates to a 3D pen with a novel structure, which can easily select and use a material wire (1) with a plurality of colors. In the 3D pen, a user can rotate the adjusting rod (25) laterally to connect the driving motor (24) with different transfer rollers (22), so that different strands (1) can be selectively transferred forwards and discharged. Therefore, the structure is very simple, and the material wires (1) with various colors can be easily selected to manufacture objects with various colors.)

1. A 3D pen, comprising:

a housing (10) extending in the front-rear direction, and having a supply hole (11) and a discharge hole (12) formed in the front and rear sides thereof, through which the wire (1) passes;

a supply unit (20) provided inside the housing (10) and configured to supply the strand (1) supplied to the supply hole (11) to one side of the discharge hole (12);

a heating means (30) for heating the strand (1) discharged to the discharge hole (12);

an input mechanism (41, 42, 43) provided to the housing (10);

a control mechanism (50) for receiving the signals of the input mechanisms (41, 42, 43) to control the operations of the supply unit (20) and the heating mechanism (30),

it is characterized in that the preparation method is characterized in that,

the supply unit (20) includes:

a guide block (21) extending in the front-rear direction and having a plurality of supply channels (21a) through which the wire (1) passes;

a plurality of transfer rollers (22) which are provided on the guide block (21), are positioned in the middle of the supply channel (21a), are in close contact with the strands (1) passing through the supply channel (21a), and transfer the supplied strands (1) to the front and back by rotating; and

and a drive motor (24) provided to the guide block (21) and selectively connected to the transfer roller (22) to drive the transfer roller (22).

2. The 3D pen according to claim 1,

a connecting passage (21b) located in front of the supply passage (21a) is formed in the guide block (21),

the front end of the supply channel (21a) is connected to the rear end of the connection channel (21b) so that the strands (1) supplied through the respective supply channels (21a) pass through the connection channel (21 b).

3. The 3D pen according to claim 1,

the transfer roller (22) is coupled to the guide block (21) so as to be rotatable by a rotating shaft (22a) extending in the vertical direction,

the transfer rollers (22) are respectively connected with driven gears (22b),

the drive motor (24) is coupled to the guide block (21) so as to be laterally rotatable by a rotation shaft (24b) extending in the vertical direction,

a driving gear (24a) selectively coupled to the driven gear (22b) is coupled to a driving shaft of the driving motor (24),

the driving gear (24a) is selectively combined with one of the driven gears (22b) when the driving motor (24) is laterally rotated.

4. The 3D pen according to claim 3,

the housing (10) is formed with a through hole (13) concentric with the rotation shaft (24b),

further comprising:

an adjustment lever (25) which is provided outside the housing (10) and is coupled to the rotating shaft (24b) so as to be slidable in the longitudinal direction of the rotating shaft (24b) through the through hole (13) and not to rotate laterally;

a rotating member (26) connected to the adjustment lever (25) provided inside the housing (10);

an elastic member (27) that is connected to the adjustment lever (25) or the rotating member (26) and that applies pressure so that the adjustment lever (25) protrudes outward from the housing (10);

a pressure detection mechanism (28) which is arranged on the shell (10) and is used for detecting that the adjusting rod (25) slides to one side of the shell (10); and

a fixing mechanism (29) combined with the rotating member (26) for fixing to prevent the rotating member (26) and the adjusting lever (25) from rotating,

a plurality of grooves (14) centered on the through-hole (13) are formed on the inner surface of the housing (10),

the rotating member (26) is formed with a protrusion (26a) selectively inserted into the groove (14),

a fixing groove (25c) for selectively connecting the fixing mechanism (29) is formed on the peripheral surface of the rotating component (26),

when a user presses the adjusting lever (25) to slide the adjusting lever (25) and the rotating member (26) toward the inside of the housing (10), the control mechanism (50) drives the driving motor (24) in the reverse direction to retreat the strand (1) by a predetermined distance, and then controls the fixing mechanism (29) to release the fixing of the rotating member (26), so that the user can rotate the adjusting lever (25).

5. The 3D pen according to claim 3,

a rotating body (24d) is coupled to the outside of the drive motor (24),

the rotating shaft (24b) is provided to the rotating body (24d),

the rotating body (24d) is provided with a rod (24f) extending upward through a guide hole (16) formed in the upper surface of the housing (10),

a push button (24g) pressed upward by an elastic member (24h) is provided at the upper end of the rod (24f),

further comprising:

a pressing detection mechanism (28) which is arranged at the upper end of the rod (24f) and is used for detecting that a user presses a button (24g) downwards; and

a fixing mechanism (29) coupled to the rotating shaft (24b) for fixing to prevent the rotating shaft (24b) and the driving motor (24) from rotating,

when the user presses the button (24g) downward, the control mechanism (50) receives a signal from the pressing detection mechanism (28) to detect this, and controls the fixing mechanism (29) to release the fixing of the rotary shaft (24b) and the drive motor (24) after the drive motor (24) is driven in reverse to retreat the strand (1) by a predetermined distance, so that the user can push the rod (24f) laterally to rotate the drive motor (24) laterally.

Technical Field

The present invention relates to a 3D pen of a new structure that can easily select a variety of colors of material filaments for use.

Background

Recently, 3D pens, in which a user can freely manufacture a three-dimensional object, have been developed and widely used.

The 3D pen discharges a long rod-shaped filament of thermosetting synthetic resin material by heating, and as shown in fig. 1 and 2, includes: a housing 10 extending in the front-rear direction and having a supply hole 11 and a discharge hole 12 formed in the front and rear sides thereof for passing the yarn 1 therethrough; a supply unit 20 provided inside the casing 10 and supplying the wire 1 supplied to the supply hole 11 to the discharge hole 12 side; and a heating means 30 for heating the strands 1 discharged to the discharge holes 12.

In this case, input means 41, 42, and 43 for controlling the operation of the heating means 30 and the supply means 20 by user operation are provided on the outer side surface of the housing 10.

The input means 41, 42, 43 are switches that can be pressed by a user's hand to input signals, and include: a power switch 41 for turning ON (ON) the heating mechanism 30; a forward switch 42 for projecting the wire 1 forward of the discharge hole 12; and a backward switch 43 for backward moving the wire 1.

Therefore, in a state where the user supplies the wire 1 to the supply unit 20 through the supply hole 11, the user operates the input means 41, 42, and 43 to turn on the heating means 30, and when the supply unit 20 is driven by operating the input means 41, 42, and 43, the wire 1 is supplied to the discharge hole 12 side through the supply unit 20, heated by the heating means 30, and then discharged to the outside of the housing 10 through the discharge hole 12, and when the user adjusts the position of the tip portion of the 3D pen, the wire 1 discharged to the discharge hole 12 is cooled and hardened, and an object having a form desired by the user is manufactured.

On the other hand, the color of the object made with such a 3D pen is determined according to the color of the strand 1.

Therefore, when an object having a plurality of colors is to be manufactured, the user needs to replace the wire 1 depending on the color of the object to be manufactured, which is very troublesome.

Therefore, a new method that can solve such a problem is required.

Disclosure of Invention

Technical problem

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a 3D pen having a new structure in which a feed yarn 1 of a plurality of colors can be easily selected and used.

Technical scheme

The present invention for achieving the above object provides a 3D pen, comprising: a housing 10 extending in the front-rear direction and having a supply hole 11 and a discharge hole 12 formed in the front and rear sides thereof for passing the yarn 1 therethrough; a supply unit 20 provided inside the casing 10 to supply the wire 1 supplied to the supply hole 11 to one side of the discharge hole 12; a heating means 30 for heating the strands 1 discharged to the discharge holes 12; input mechanisms 41, 42, 43 provided in the housing 10; a control means 50 for receiving signals from the input means 41, 42, 43 and controlling the operation of the supply unit 20 and the heating means 30, wherein the supply unit 20 comprises: a guide block 21 extending in the front-rear direction and having a plurality of supply passages 21a through which the wire 1 passes; a plurality of transfer rollers 22 provided on the guide block 21, positioned at an intermediate portion of the supply path 21a, closely attached to the wire 1 passing through the supply path 21a, and configured to transfer the supplied wire 1 forward and backward by rotation; and a driving motor 24 provided to the guide block 21 and selectively connected to the transfer roller 22 to drive the transfer roller 22.

According to another feature of the present invention, there is provided a 3D pen, wherein a connection passage 21b is formed in the guide block 21 in front of the supply passage 21a, a front end portion of the supply passage 21a is connected to a rear end portion of the connection passage 21b, and the filament 1 supplied through each of the supply passages 21a passes through the connection passage 21 b.

According to another aspect of the present invention, there is provided a 3D pen, wherein the transfer rollers 22 are coupled to the guide blocks 21 to be rotatable by a rotation shaft 22a extending in a vertical direction, driven gears 22b are coupled to the transfer rollers 22, the driving motor 24 is coupled to the guide blocks 21 to be laterally rotatable by a rotation shaft 24b extending in the vertical direction, a driving gear 24a selectively coupled to the driven gears 22b is coupled to a driving shaft of the driving motor 24, and the driving gear 24a is selectively coupled to one of the driven gears 22b when the driving motor 24 is laterally rotated.

According to still another aspect of the present invention, there is provided a 3D pen, wherein the housing 10 has a through hole 13 formed therein concentrically with the rotation shaft 24b, and further comprising: an adjustment lever 25 which is provided outside the housing 10 and is coupled to the rotation shaft 24b so as to be slidable in the longitudinal direction of the rotation shaft 24b through the through hole 13 and not to be laterally rotatable; a rotating member 26 connected to the adjustment lever 25 provided inside the housing 10; an elastic member 27 connected to the adjustment lever 25 or the rotating member 26 and pressurizing the adjustment lever 25 to protrude outward of the housing 10; a pressure detection mechanism 28 provided in the housing 10 for detecting the sliding of the adjustment lever 25 toward the housing 10; and a fixing mechanism 29 coupled to the rotation member 26 for fixing the rotation member 26 and the adjustment lever 25 so as to prevent the rotation of the rotation member 26 and the adjustment lever 25, wherein a plurality of recesses 14 centering on the through-hole 13 are formed in an inner surface of the housing 10, a protrusion 26a selectively inserted into the recesses 14 is formed in the rotation member 26, a fixing groove 25c selectively coupled to the fixing mechanism 29 is formed in a peripheral surface of the rotation member 26, and when a user presses the adjustment lever 25 to slide the adjustment lever 25 and the rotation member 26 toward the inside of the housing 10, the control mechanism 50 reversely drives the driving motor 24 to retreat the wire 1 by a predetermined distance, and then controls the fixing mechanism 29 to release the fixing of the rotation member 26, thereby enabling the user to rotate the adjustment lever 25.

According to still another aspect of the present invention, there is provided a 3D pen in which a rotation body 24D is coupled to an outer side of the driving motor 24, the rotation shaft 24b is provided to the rotation body 24D, the rotation body 24D is provided with a rod 24f extending upward through a guide hole 16 formed in an upper surface of the housing 10, and a button 24g pressed upward by an elastic member 24h is provided at an upper end of the rod 24f, the 3D pen further comprising: a pressing detection mechanism 28 provided at the upper end of the lever 24f for detecting that the user presses the button 24g downward; and a fixing mechanism 29 coupled to the rotary shaft 24b and fixing the rotary shaft 24b and the driving motor 24 to prevent the rotary shaft 24b and the driving motor 24 from rotating, wherein when the user presses the button 24g downward, the control mechanism 50 detects the pressing by receiving a signal from the pressing detection mechanism 28, reversely drives the driving motor 24 to retreat the wire 1 by a predetermined distance, and then controls the fixing mechanism 29 to release the fixing of the rotary shaft 24b and the driving motor 24, so that the user can laterally push the lever 24f to laterally rotate the driving motor 24.

Effects of the invention

According to the 3D pen of the present invention, the user rotates the adjustment lever 25 in a lateral direction to connect the driving motor 24 to the different feed rollers 22, thereby selectively feeding and discharging the different strands 1 forward.

Therefore, the structure is very simple, and the material threads 1 with various colors can be easily selected to manufacture objects with various colors.

Drawings

Fig. 1 is a plan sectional view illustrating a conventional 3D pen.

Fig. 2 is a circuit configuration diagram of a conventional 3D pen.

Fig. 3 is a plan sectional view illustrating a 3D pen of the present invention.

Fig. 4 is a plan sectional view showing an enlarged main portion of the 3D pen of the present invention.

Fig. 5 is a side sectional view illustrating a 3D pen of the present invention.

Fig. 6 is a side sectional view showing an enlarged main portion of the 3D pen of the present invention.

Fig. 7 is a front sectional view illustrating a 3D pen according to the present invention.

Fig. 8 is a plan sectional view showing the form of a rotary member and a recess of the 3D pen according to the present invention.

Fig. 9 is a circuit configuration diagram of the 3D pen of the present invention.

Fig. 10 to 13 are diagrams illustrating the operation of the 3D pen according to the present invention.

Fig. 14 is a side sectional view illustrating a second embodiment of a 3D pen according to the present invention.

Fig. 15 is a side sectional view showing an enlarged main portion of a second embodiment of a 3D pen according to the present invention.

Detailed Description

The present invention will be described in detail below with reference to the attached exemplary drawings.

Fig. 3 to 13 show a 3D pen of the present invention, which includes: a housing 10 extending in the front-rear direction and having a supply hole 11 and a discharge hole 12 formed in the front and rear sides thereof for passing the yarn 1 therethrough; a supply unit 20 provided inside the casing 10 and supplying the wire 1 supplied to the supply hole 11 to one side of the discharge hole 12; a heating means 30 for heating the strands 1 discharged to the discharge holes 12; input mechanisms 41, 42, 43 provided in the housing 10; and a control means 50 for receiving signals from the input means 41, 42, 43 to control the operation of the supply unit 20 and the heating means 30, which is the same as the conventional art.

At this time, a space portion in which the supply unit 20 and the heating mechanism 30 are provided is formed inside the housing 10.

And, includes: a power switch 41 for turning on the heating mechanism 30; a forward switch 42 for projecting the wire 1 forward of the discharge hole 12; and a backward switch 43 for backward moving the wire 1.

Further, according to the present invention, the supply unit 20 includes: a guide block 21 extending in the front-rear direction and having a plurality of supply passages 21a through which the wire 1 passes; a plurality of transfer rollers 22 provided on the guide block 21, positioned at an intermediate portion of the supply path 21a, brought into close contact with the wire 1 passing through the supply path 21a, and configured to transfer the supplied wire 1 forward by rotation; a plurality of support rollers 23 provided on the opposite side of the supply path 21a to the transfer roller 22; a driving motor 24 coupled to the guide block 21 so as to be rotatable by a rotation shaft 24b extending in an up-and-down direction, and selectively connected to the transfer roller 22 by rotation to drive the transfer roller 22; an adjustment lever 25 disposed outside the housing 10 and coupled to the rotation shaft 24 b; a rotating member 26 connected to the adjustment lever 25 provided inside the housing 10; an elastic member 27 connected to the adjustment lever 25 or the rotating member 26 and pressurizing the adjustment lever 25 to protrude outward of the housing 10; a pressure detection mechanism 28 provided in the housing 10, for detecting when the adjustment lever 25 slides toward the housing 10; and a fixing mechanism 29 coupled to the rotating member 26 and fixed to prevent the rotating member 26 and the adjustment lever 25 from rotating.

Specifically, the guide block 21 is composed of a lower plate 21d and an upper plate 21e stacked on each other, and the supply passage 21a is composed of three parts, and is formed between the lower plate 21d and the upper plate 21e so as to be laterally spaced from each other.

In this case, the guide block 21 is formed with a connection passage 21b, the connection passage 21b extends in the front-rear direction so as to be positioned in front of the supply passage 21a, the front end portion of the connection passage 21b is connected to the discharge hole 12, and the front end portion of the supply passage 21a is connected to the rear end portion of the connection passage 21 b.

The three supply holes 11 are connected to the rear end of the supply passage 21a by connecting pipes 15.

Therefore, when the three kinds of strands 1 of different colors are inserted into the supply passage 21a through the supply hole 11 and one kind of strands 1 is pushed forward, the strands 1 are discharged forward of the discharge hole 12 through the connection passage 21 b.

A space 21c is formed in the guide block 21 to rotatably couple the transfer roller 22 and the support roller 23.

One side of the space 21c communicates with the supply passage 21 a.

The transfer roller 22 is coupled to the inside of the space 21c of the guide block 21 so as to be rotatable by a rotation shaft 22a extending in the vertical direction, and has gear teeth formed on the peripheral surface thereof, so as to be firmly adhered to one side surface of the wire 1 inserted into the supply passage 21 a.

The upper end of the rotary shaft 22a extends upward of the guide block 21.

At this time, the transfer rollers 22 are connected to driven gears 22b, respectively.

The driven gear 22b is a bevel gear fixedly coupled to an upper end of the rotating shaft 22a so as to be positioned above the guide 21, and when the driven gear 22b is rotated, the rotating shaft 22a and the transfer roller 22 are rotated.

The support roller 23 is coupled to the inside of the space 21c so as to be rotatable by a rotation shaft 23a extending in the vertical direction, and is supported by a surface of the peripheral surface of the wire 1 opposite to a surface of the transfer roller 22 to be in close contact with the peripheral surface, so that the transfer roller 22 is firmly in close contact with the peripheral surface of the wire 1.

The driving motor 24 is coupled to an upper surface of the guide block 21 to be laterally rotatable, and a driving gear 24a selectively coupled to the driven gear 22b is provided on a driving shaft extending rearward.

The drive gear 24a is a bevel gear corresponding to the driven gear 22 b.

Therefore, as shown in fig. 13, when the driving motor 24 is laterally rotated, the driving gear 24a is selectively coupled to one of the driven gears 22b, the driving motor 24 is selectively coupled to one of the transfer rollers 22, and the driving motor 24 is driven to rotate the transfer rollers 22 in the forward and reverse directions.

At this time, a through hole 13 corresponding to a rotation shaft 24b provided in the driving motor 24 is formed in an upper surface of the housing 10.

The adjustment lever 25 is in the form of a circular plate having a large diameter, and an extension pipe 25a inserted into the housing 10 through the through hole 13 and coupled to an upper end of the rotation shaft 24b is provided at a central portion of a lower side surface thereof.

At this time, as shown in fig. 5 and 8, an extended portion 24c in a quadrangular bar shape is formed at an upper end of the rotation shaft 24b, a quadrangular coupling hole 25b into which the extended portion 24c is inserted is formed in the extended pipe 25a, and the extended pipe 25a is coupled to an outer side of the extended portion 24c so as to be slidable in a longitudinal direction of the rotation shaft 24b and not to be laterally rotated.

The rotating member 26 extends laterally from one side of the extension pipe 25 a.

In this case, a plurality of concave grooves 14 are formed on the inner surface of the housing 10 centering on the through hole 13, and a protrusion 26a selectively inserted and coupled to the concave grooves 14 is formed on the rotating member 26.

As shown in fig. 8, the three concave grooves 14 are formed so as to correspond to the transfer roller 22, and are laterally spaced apart from each other with the through hole 13 as a center so as to correspond to the angle of the transfer roller 22 with the rotation shaft 24b as a center.

The elastic member 27 is a compression coil spring coupled to the outside of the rotating shaft 24b so as to extend in the vertical direction, the lower end of the compression coil spring is supported by the upper surface of the driving motor 24, the upper end of the compression coil spring is supported by the lower surface of the extension pipe 25a, and the adjustment lever 25 and the rotating member 26 are pressed upward.

Therefore, at ordinary times, the adjustment lever 25 and the turning member 26 are pressed upward by the elastic member 27 so that the projection 26a is inserted into the recess 14, and the adjustment lever 25 and the drive motor 24 are fixed to prevent these lateral rotations.

As shown in fig. 11, when the user presses the adjustment lever 25 downward, the adjustment lever 25 and the rotation member 26 are lowered to release the engagement between the protrusion 26a and the groove 14, so that the user can rotate the adjustment lever 25 to rotate the driving motor 24 in a lateral direction.

When the adjustment lever 25 is released in a state where the user rotates the drive motor 24 and the drive gear 24a of the drive motor 24 is coupled to the driven gear 22b provided in the other transfer roller 22, the adjustment lever 25 and the rotating member 26 are raised by the elastic member 27, and the protrusion 26a is inserted into and coupled to the other concave groove 14, thereby being fixed so as to prevent the drive motor 24 from rotating.

The pressure detection mechanism 28 is provided on the upper surface of the housing 10 so as to be positioned below the adjustment lever 25, and utilizes a limit switch that detects when the adjustment lever 25 is lowered and outputs a signal.

The fixing means 29 is provided in the housing 10 so as to face the extension pipe 25a, and is operated in response to a control signal from the control means 50 to be fixed so as to prevent the adjustment lever 25 from rotating.

As shown in fig. 5 and 8, three fixing grooves 25c equally spaced from the angle of the groove 14 are formed on the peripheral surface of the extension pipe 25a, and the fixing means 29 is provided with a fixing bar 29a selectively inserted and fixed to the fixing grooves 25 c.

Therefore, when the fixing bar 29a is inserted into the fixing groove 25c, the adjustment lever 25 is fixed to be prevented from rotating, and when the fixing mechanism 29 is driven by the control mechanism 50, the fixing bar 29a is retreated and separated from the fixing groove 25c, and the adjustment lever 25 can be rotated.

At this time, the fixing groove 25c is extended long in the vertical direction, and the adjustment lever 25 and the extension pipe 25a can be moved up and down in a state where the distal end portion of the fixing bar 29a is coupled to the fixing groove 25 c.

The control means 50 receives signals from the input means 41, 42, 43 and the pressure detection means 28, and controls the operation of the heating means 30 and the supply unit 20.

The function of such a 3D pen is explained in detail as follows.

First, the user inserts three strands 1 of different colors into the supply hole 11 such that the tip end portions of the strands 1 protrude forward from the feed roller 22 of the supply unit 20 as shown in fig. 3, and when the forward switch 42 is operated in a state where the heating mechanism 30 is turned on by operating the power switch 41, the control mechanism 50 drives the drive motor 24 to rotate the feed roller 22, and pushes one of the three strands 1 forward as shown in fig. 10, so that the strand 1 is heated by the heating mechanism 30 and then discharged to the front of the housing through the discharge hole 12.

When the user manufactures an object using the string 1 of different colors, the adjustment lever 25 is pressed downward to release the engagement between the protrusion 26a and the groove 14, as shown in fig. 11.

At this time, the control means 50 receives a signal from the pressurization detecting means 28, and as shown in fig. 12, the control means makes the driving motor 24 reversely drive for a predetermined time to retreat the strand 1 inserted into the discharge hole 12 toward the supply path 21 a.

At the same time, the adjustment lever 25 maintains the state in which the fixing bar 29a is coupled to the fixing groove 25c, so that the rotation is prevented by the fixing mechanism 29.

When the thread 1 retreats toward the feed path 21a, the control mechanism 50 controls the fixing mechanism 29 to retreat the fixing bar 29a, thereby rotating the adjustment lever 25.

When the user rotates the adjustment lever 25 to one side, connects the driving gear 24a to the driven gear 22b connected to the other transfer roller 22 as shown in fig. 13, and then releases the hand pressing the adjustment lever 25, the adjustment lever 25 and the rotating member 26 are lifted by the elastic member 27, and the protrusion 26a is engaged with the concave groove 14.

At this time, the control means 50 receives a signal from the pressure detection means 28, and controls the fixing means 29 to insert and couple the distal end portion of the fixing bar 29a into the fixing groove 25c when confirming that the pressure detection means has received the signal.

When the user operates the forward switch 42, the control means 50 drives the driving motor 24 to forward feed the strands 1 of different colors, heats the strands by the heating means 30, and then discharges the strands forward through the discharge hole 12.

In the 3D pen configured as described above, the user rotates the adjustment lever 25 in the lateral direction to connect the drive motor 24 to the different feed rollers 22, and selectively feeds and discharges the different strands 1 forward.

Therefore, the structure is very simple, and the multi-color material wires 1 can be easily selected to manufacture objects with various colors.

In the present embodiment, the guide block 21 is formed by stacking the lower plate 21d and the upper plate 21e, and the supply passage 21a is formed by stacking three plates so as to be laterally spaced from each other between the lower plate 21d and the upper plate 21e, but the form of the guide block 21 may be variously changed.

Fig. 14 and 15 show another embodiment of the present invention, in which the driven gear 22b is a flat gear coupled to the rotary shaft 22 a.

A rotating body 24d is coupled to an outer side of the driving motor 24, and the rotating shaft 24b is provided in the rotating body 24 d.

The drive gear 24a is rotatably coupled to the rotating body 24d, and a flat gear connected to a drive shaft of the drive motor 24 via a bevel gear 24e is used.

The rotating body 24d is provided with a rod 24f extending upward through a guide hole 16 formed in the upper surface of the housing 10.

The guide hole 16 has an arc shape centering on the rotation shaft 24b, and when a user grips the lever 24f and pushes it laterally, the rotating body 24d and the driving motor 24 rotate laterally to selectively couple the driving gear 24a with one of the plurality of driving gears 22 b.

A button 24g pressed upward by an elastic member 24h is provided at the upper end of the lever 24f, the pressing force detection means 28 is provided at the upper end of the lever 24f, and the control means 50 can detect this when the user presses the button 24g downward.

Three fixing grooves 24i are formed on the circumferential surface of the rotation shaft 24b, the fixing mechanism 29 is provided in the housing 10, and when the driving gear 24a is coupled to one of the plurality of driven gears 22b as the driving motor 24 is laterally rotated, a fixing bar 29a provided in the fixing mechanism 29 is selectively coupled to the fixing grooves 24i to fix the rotation shaft 24b and the driving motor 24 so as to prevent the lateral rotation.

Therefore, when the user presses the button 24g downward, the control mechanism 50 drives the driving motor 24 in reverse to retract the wire 1, and then releases the fixing of the fixing mechanism 29, so that the user pushes the rod 24f in the lateral direction to couple the driving gear 24a of the driving motor 24 to the other driven gear 22 b.

The embodiments for carrying out the present invention are described together with the above-described preferred embodiments for carrying out the present invention.

Industrial applicability

In the present invention, the user rotates the adjusting lever laterally to connect the driving motor with different transfer rollers, so that different strands can be selectively transferred forward to be discharged, and the present invention has industrial applicability.