JP2002179027A - Clip feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip feeder which can be improved in durability. SOLUTION: The clip feeder includes a clip holding plate 30 for reciprocating a clip K at the head of a strip of clips comprising U-shaped and sheetlike clips coupled in a series for successively feeding to a binding position, a leg crossing mechanism 40 provided on the plate 30 to be capable of opening/closing for crossing both legs of the clip by closing, and an open/close mechanism 50 provided to be capable of relatively reciprocating with respect to the plate 30 in the same direction of the reciprocation for opening/closing the mechanism 40 by the reciprocation and also closing the mechanism 40 when it advances. It includes an arm member 22 for reciprocating the clip holding plate 30, and a second reciprocating drive mechanism 60 for reciprocating the mechanism 50 when the plate 30 is advanced by the arm member 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clip feeder used for a binding machine for binding the mouth of a bag for packaging, for example, food.

[0002]

2. Description of the Related Art Conventionally, as a clip feeder, FIG.
1 and FIG. 22 are known.

Such a clip feeder includes a feed plate 2 which reciprocates in the front-rear direction (left-right direction) by rotation of a drive gear 1, and a stopper plate 3 which is disposed on the feed plate 2 and is movable in the front-rear direction. A clip holding member 4 arranged on the stopper plate 3 and movable in the front-rear direction; an arm holding member 5 arranged on the clip holding member 4 and movable in the front-rear direction; 4 is provided with a pair of tie pin arms 7, 7 and the like that rotate about a shaft 6 provided on the shaft 4. Arm holding member 5 and tie pin arms 7, 7
Are connected by feed arms 8, 8, and when the arm holding member 5 moves forward, the tip portions 7a, 7a of the tie pin arms 7, 7 rotate in directions to close each other. Further, tie pins 7b, 7b protruding downward are provided at tip portions 7a, 7a of the tie pin arms 7, 7, respectively.

The tie pins 7b are inserted through holes Ka of the clip K shown in FIG.

On the other hand, the stopper plate 3, the clip holding member 4, and the arm holding member 5 are provided with a pair of lock pieces 9A, 9A, 9B, 9B, 9C, 9C which are urged to rotate inward. The pieces 9A, 9A engage with the recesses 10a, 10a of the engaging walls 10, 10 provided along the stopper plate 3, and the lock pieces 9B, 9B engage with the recesses 3a, 3a provided on both sides of the stopper plate 3. Engage and lock pieces 9C, 9C
Are engaged with recesses 4a, 4a provided on both sides of the clip holding member 4.

On both sides of the feed plate 2, projections 2A, 2A, 2B, 2B, 2C, 2C projecting upward are provided, and these projections 2A, 2A, 2B, 2B, 2C, 2C are provided.
Engages with the lock pieces 9A, 9A, 9B, 9B, 9C, 9C to advance the stopper plate 3, the clip holding member 4, and the arm holding member 5 as the feed plate 2 advances.

When the feed plate 2 advances rightward by the rotation of the drive gear 1 from the state shown in FIG. 21, the projections 2A, 2A, 2B, 2B, 2C,
2C is engaged with the lock pieces 9A, 9A, 9B, 9B, 9C, 9C, and the stopper plate 3, the clip holding member 4, and the arm holding member 5 advance with the feed plate 2. When the clip K is sent to the binding position (not shown) by the advance of the clip holding member 4, as shown in FIG.
A, 9A engages with the concave portion 10a of the engagement wall 10, the engagement of the projections 2A, 2A of the feed plate 2 with the lock pieces 9A, 9A is released, and the advancement of the stopper plate 3 stops.

Further, when the feed plate 2 advances a little, the lock pieces 9B, 9B of the clip holding member 4 engage with the concave portions 3a of the stopper plate 3 as shown in FIG. Lock pieces 9B, 9B
And the clip holding member 4 stops moving forward. Further, as the feed plate 2 moves forward, FIG.
As shown in FIG. 6, the arm holding member 5 is
, The tie pin arms 7, 7 rotate in a direction to close each other as the arm holding member 5 advances.

The rotation of the tie pin arms 7, 7 causes the leg pieces Kb of the clip K to overlap each other. Then, the lock pieces 9C, 9C engage with the recesses 4a, 4a of the clip holding member 4, and the engagement of the projections 2C, 2C of the feed plate 2 with the lock pieces 9C, 9C is released. Is stopped.

Then, the overlapped leg pieces Kb are made dowels by a caulking device (not shown), and the mouth portion 13 of the bag 12 is bound as shown in FIG. Thereafter, the feed plate 2 is retracted, and the operation reverse to the above is performed, so that the stopper plate 3, the clip holding member 4, the arm holding member 5
Etc. return to the original position.

[0011]

However, in such a clip feeder, the lock pieces 9A to 9A are not provided.
C is urged inward and moves while sliding on the side surface 10S of the engaging wall 10, the side surface 3S of the stopper plate 3, and the side surface 4S of the clip holding member 4. For this reason, the side surfaces 10S, 3S, 4S and the lock pieces 9A to 9C are easily worn, and the lock pieces 9A to 9C are impact-engaged with the concave portions 10a, 3a, 4a by the inner bias. Go.
For this reason, each lock piece 9A-9C may be damaged,
There are many problems such as a problem in durability of the clip feeder.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a clip feeder capable of improving durability.

[0013]

In order to achieve the above object, the invention of claim 1 reciprocates a leading clip of a clip band formed by connecting U-shaped and sheet-shaped clips in series. A clip feeding means for sequentially feeding the clip to the binding position, a leg piece crossing means provided to be openable and closable on the clip feeding means to cross both leg pieces of the clip by closing, and a clip feeding means in the same direction as the reciprocating movement. An opening and closing operation means for opening and closing the leg intersecting means by the reciprocating movement and closing the leg intersecting means when going forward. A first reciprocating drive means for reciprocating the clip feeding means, and a reciprocating movement of the opening / closing operation means when the clip feeding means reciprocates by the first reciprocating drive means. Characterized in that a second reciprocating drive means for moving the.

The invention according to claim 2 is characterized in that the first and second reciprocating drive means are operated by rotation of one gear cam.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a clip feeder according to the present invention will be described below with reference to the drawings.

Clip feeder 2 shown in FIGS. 1 to 4
0 is a gear cam 2 rotated by a motor (not shown) or the like.
1, an arm member 22 which reciprocates once in the front-rear direction (left-right direction) by one rotation of the gear cam 21, a clip holding plate (clip feeding means) 30 attached to a connecting member 23 fixed to the arm member 22, and A leg intersecting mechanism 40 provided on the clip holding plate 30 for intersecting both leg pieces Kb of the clip K, and an opening and closing operation for reciprocating relative to the clip holding plate 30 to open and close the leg intersecting mechanism 40 A mechanism 50, a second reciprocating drive mechanism (second reciprocating drive means) 60 for reciprocating the opening / closing operation mechanism 50, and moving the second clip K from the front backward by a predetermined distance to move the first clip K to the second And a shredding mechanism (shredding means) 70 for shredding from the clip K. [Gear cam 21] The gear cam 21 has cam grooves 2 on both surfaces thereof.
1A and 21B, and the cam groove 2 is formed in the predetermined section Q1.
1B is formed outside the cam groove 21A, and in the section Q2, the cam groove 21B is formed outside by a distance R1. In other sections, the cam groove 21A and the cam groove 21B are formed at the same distance from the rotation center 21c. [Arm Member 22] The arm member 22 extends in the front-rear direction and is held by a fixed block 24 fixed to a frame (not shown) so as to be movable in the front-rear direction. A roller 25 is provided at a rear portion of the arm member 22, and the roller 25 is inserted into a cam groove 21 </ b> A of the gear cam 21. The arm member 22 and the cam groove 2 of the gear cam 21
The first reciprocating drive means is constituted by 1A, the roller 25 and the like. [Connecting Member 23] The connecting member 23 includes a first connecting member 23A fixed to the arm member 22 and the first connecting member 23A.
A and a second connecting member 23B attached to the second connecting member 23A. [Clip holding plate 30] Clip holding plate 3
0 is the first connecting member 23A via the second connecting member 23B.
, And reciprocates in the front-rear direction integrally with the arm member 22.

As shown in FIG. 5, the clip holding plate 30 has a pair of leg guides 31, 31 for holding the legs Kb, Kb of the clip K at its distal end. An insertion path 32 is formed between the leg piece guide sections 31 and 31 and expands toward the front, and a bag opening (not shown) is inserted therein. Receiving part 3
2A is formed. Also, the leg piece guide portions 31, 31
Has an arc-shaped guide groove 31 extending laterally from the insertion path 32.
G, 31G are formed.

The clip holding plate 30 has an engaging hole K extending in the front-rear direction and having a second clip K formed therein.
Slots 38, 38 facing a and Ka are formed.

A concave portion 33 extending in the front-rear direction is formed on the back surface of the clip holding plate 30, and a clip K is formed on both side surfaces 33A of the concave portion 33 as shown in FIGS.
Are attached. A transport path U for transporting the clip K is formed by the guide members 34 and 39 and the ceiling 33T of the recess 33. The upper surface of the guide member 39 has leg pieces Kb, K
An inclined surface is formed so as to guide such that b intersects and overlaps each other (see FIG. 10).

As shown in FIGS. 7 and 8, a concave portion 36 extending in the front-rear direction is formed on a front upper surface 35 of the guide member 34.
In addition, a protrusion 37 is formed on the side of the recess 36. The front and rear of the protrusion 37 are inclined surfaces 37a and 37b. The concave portion 36 is a slot 3 of the clip holding plate
8. [Leg crossing mechanism 40] As shown in FIGS. 9 and 10, the leg crossing mechanism 40 includes a pair of tie pin arms 4 rotatably provided on a shaft 41 mounted on the clip holding plate 30.
2, 42, and connecting members 43, 43 one end of which is pivotally supported on shoulders of the tie pin arms 42, 42. Axis 4
Reference numeral 1 is attached to the clip holding plate 30 so as to be tiltable in the front-rear direction. The tie pin arms 42, 42 are tilted together with the shaft 41 so that a pin 45 described later is engaged with the engagement hole Ka of the clip K. Has become.

The tie pin arm 42 is shown in FIGS.
As shown in FIG. 2, a plan view is formed substantially in an L-shape, and a shaft hole 44 is formed in a rear portion thereof. A shaft 41 (see FIG. 10) is rotatably inserted through the shaft hole 44. Further, a pin 45 for engaging with the engaging hole Ka of the clip K is provided at the tip of the tie pin arm 42, and a shaft 46 is provided at the shoulder thereof. The connecting member 4 is connected to the shaft 46.
One end of 3,43 is pivoted. [Opening / Closing Operation Mechanism 50] As shown in FIG. 2, the opening / closing operation mechanism 50 includes rods 52, 52 held by rod holding members 51 attached to both sides of the clip holding plate 30 so as to be movable in the front-rear direction. 52, 52, and supporting members 54, 54 attached to the distal end portions. The supporting members 54, 54 have connecting members 43, 43 of the leg crossing mechanism 40.
The rear is pivoted. And tie pin arm 4
The rods 42 rotate around the shaft 41 by the reciprocating movement of the rods 52 in the front-rear direction, and the opening and closing operations are performed by this rotation. [Second reciprocating drive mechanism 60] The second reciprocating drive mechanism 60 includes a cam groove 21B formed in the gear cam 21 and a rod 52,
The block 61 has a block 61 fixed to the rear end thereof, and a roller 62 provided in the block 61 and inserted into the cam groove 21B of the gear cam 21. And gear cam 2
The block 61 makes one reciprocation back and forth by one rotation of one, and the rods 52 and 52 make one reciprocation back and forth with this block 61. [Shredding mechanism 70] The shredding mechanism 70 is shown in FIGS.
As shown in FIG. 7, a holder 71 mounted on the clip holding plate 30 so as to be movable in the front-rear direction,
And a pin holding member 80 etc. held by the

A spring 76 is interposed between a rear wall 75 formed at the rear of the holder 71 and the second connecting member 23B, and the holder 71 is urged forward by the spring 76.

The pin holding member 80 has a roller 81 provided thereon and a projecting wall 82 projecting forward.
Pins 83, 83 projecting downward are provided on both sides of the projecting wall 82. The pins 83, 83 pass through the long holes 38, 38 of the clip holding plate 30, and the tips 83 a, 83 a of the pins 83, 83 are recessed 36, 36 of the guide members 34, 34.
Is located above the front side.

On the other hand, a spring 85 is provided between the projecting wall 82 of the pin holding member 80 and the bottom wall 78 of the holder 71, and the pin 85 is rotated counterclockwise about the shaft 73 by the spring 85. Has been energized. The pin holding member 80 stops rotating counterclockwise at the position shown in FIG. 13, and can rotate clockwise from this position against the urging force of the spring 85. The biasing force of the spring 85 is set smaller than the biasing force of the spring 76.

In FIG. 13, reference numeral 100 denotes a pressing member fixed to a base 101. A pressing portion 103 projecting downward is formed on the lower surface of the pressing member 100. The pressing portion 102 is a roller of the pin holding member 80. The roller 81 is pressed down by contact with the
0 is rotated clockwise. At the rear end of the pressing member 100, there is provided a contact portion 102 which comes into contact with the rear wall 75 of the holder 71. After the pressing portion 102 pushes down the roller 81, the contact portion 103 becomes the holder. The holder 71 comes into contact with the rear wall 75 and pushes the holder 71 backward.

Reference numeral 110 denotes a check pawl for preventing the clip K from returning. The check pawl 110 is rotatably attached to a support member 111 fixed to a frame (not shown).
It is urged counterclockwise by a spring 112. With this bias, the tip 110a of the check nail 110 enters the transport path U of the clip K and prevents the clip K from returning. [Operation] Next, the operation of the clip feeder 20 configured as described above will be described.

First, as shown in FIG. 2, the clip K connected in a belt shape is previously mounted on the clip feeder 20 and the tie pin arms 42, 42 are inserted into the engaging holes Ka, Ka of the leading clip K. The pins 45, 45 are engaged. Before the motor (not shown) is started, the gear cam 21 is located at the position (initial position) shown in FIGS. 1 and 2, and the arm member 22, the clip holding plate 30, the block 61, the rods 52, 52, etc. Are located as shown, and the tie pin arms 42, 42 are open (see FIG. 9).

The motor is operated by a switch (not shown).
When (not shown) is activated, the gear cam 21 rotates in the direction shown by the arrow, and the arm member 22 moves forward with the rotation of the gear cam 21. As the arm member 22 advances, the clip holding plate 30 is connected to the connecting member 23.
At the same time, it advances integrally with the arm member 22.

On the other hand, the block 6 of the second reciprocating drive mechanism 60
1 also advances with the rotation of the gear cam 21, and the rods 52, 52 also advance with the advance of the block 61. In the section Q3 of the gear cam 21, since the cam grooves 21A and 21B are on the same track, the rods 52 and 52 are advanced integrally with the clip holding plate 30, and the tie pin arms 42 and 42 are opened. is there.
In addition, since the pins 45, 45 of the tie pin arms 42, 42 are engaged with the engagement holes Ka, Ka of the leading clip K, the band-shaped clip K is also transported forward together with the clip holding plate 30. become.

When the gear cam 21 rotates by an angle θ3, FIG.
The clip holding plate 30 moves forward to a position (binding position) shown in FIGS. That is, the leading clip K is transported to the binding position. Then, the clip holding plate 30 stops at this binding position. At this time, the mouth of the bag (not shown) brought to the binding position in advance is inserted into the insertion path 32 of the clip holding plate 30.

On the other hand, immediately before the clip holding plate 30 reaches the binding position, the pressing portion 102 of the pressing member 100 comes into contact with the roller 81 of the pin holding member 80, and the pin holding member 80 rotates clockwise by this contact. Move. The pins 83, 83 are pushed down by the rotation of the pin holding member 80, and the tips 83a, 83a of the pins 83, 83 are inserted into the engagement holes Ka, Ka of the second clip K, as shown in FIG. As it enters, it enters the concave portions 36, 36 of the guide members 34, 34.

Thereafter, as the clip holding plate 30 advances, the contact portion 103 of the pressing member 100 contacts the rear wall 75 of the holder 71 to move the holder 71 rearward against the urging force of the spring. Go. That is, the holder 7
1 moves backward relative to the clip holding plate 30.

By the rearward movement of the holder 71, as shown in FIG. 18, the pin 83 of the pin holding member 80 moves rearward together with the holder 71 and pulls the second clip K rearward. . The first clip K is pulled apart from the second clip K by pulling the pin 83.

As described above, the pin 8 of the pin holding member 80
Since the third clip K enters the engaging holes Ka, Ka of the second clip K and pulls the second clip K backward, the first clip K is shredded. Of the leg pieces Kb, Kb are not deformed by the pins 83, 83. Therefore, no trouble occurs when the clip K is fed or bound.

When the gear cam 21 further rotates, and the block 61 and the rods 52, 52 move forward a distance R1 with respect to the clip holding plate 30 as shown in FIG. 52,52
The supporting members 54, 54 attached to the distal end of the connecting member 43,
Push 43 forward. As a result, the tie pin arms 42, 42 are turned around the shaft 41 in the direction of the arrow and closed.

By closing the tie pin arms 42, 42, the leg pieces Kb, Kb of the leading clip K intersect and overlap each other. Then, the overlapped leg pieces Kb, Kb are made dowels by a caulking device (not shown), and the bag mouth portion is bound.

Further, the gear cam 21 rotates and the roller 2
When 5, 62 makes one rotation past section Q2 of cam grooves 21A, 21B, the operation opposite to the above is performed and arm member 2 is rotated.
2. The clip holding plate 30, the block 61, the rods 52, 52 and the tie pin arms 42, 42 return to the initial positions shown in FIGS.

In the present embodiment, the clip holding plate 30 is reciprocated by reciprocating the arm member 22 by the cam groove 21A, and the rods 52, 52 are reciprocated by the cam groove 21B, whereby the tie pin arm 42,
Since the opening and closing operation is performed, the lock piece does not need to be used for the forward movement and the stop of the clip holding plate 30 and the rods 52 and 52 as in the related art. In addition, there is no problem of wear of the lock pieces and the like. For this reason, the durability of the clip feeder 20 can be improved.

Also, cam grooves 21 are provided on both surfaces of the gear cam 21.
A and 21B are formed to reciprocate the clip holding plate 30 and the rods 52, 52, so that the configuration is very simple.

In the above embodiment, the clip holding plate 30 and the rods 52, 52 are reciprocated using the cam grooves 21A, 21B formed on both surfaces of the gear cam 21, but cams are provided on both surfaces of the gear cam 21 to reciprocate. Of course, it may be moved.

[0041]

According to the present invention, the first reciprocating driving means for reciprocating the clip feeding means and the second reciprocating driving means for reciprocating the opening / closing means are provided. There is no need to use a lock piece, and therefore, there is no impact when the clip feeding means and the opening and closing operation means are moved forward and stopped, and there is no problem of wear of the lock piece and the like. For this reason, the durability of the clip feeder can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a clip feeder according to the present invention.

FIG. 2 is a bottom view showing the clip feeder shown in FIG. 1;

FIG. 3 is a longitudinal sectional view of the clip feeder of FIG. 1;

FIG. 4 is a cross-sectional view of the clip feeder of FIG. 1;

FIG. 5 is a plan view showing a clip holding plate.

FIG. 6 is a sectional view of a clip holding plate.

FIG. 7 is an explanatory view showing a guide member attached to a concave portion of the clip holding plate.

8 is a cross-sectional view of FIG.

FIG. 9 is a plan view showing a leg crossing mechanism, an opening / closing operation mechanism, and the like provided on the clip holding plate.

FIG. 10 is a cross-sectional view showing a configuration of a leg crossing mechanism.

FIG. 11 is a plan view showing a tie pin arm.

FIG. 12 is a side view of the tie pin arm of FIG. 11;

FIG. 13 is a longitudinal sectional view showing a configuration of a holding mechanism.

FIG. 14 is a cross-sectional view showing a configuration of a holding mechanism.

FIG. 15 is a plan view showing a state where a clip holding plate and the like have moved forward.

FIG. 16 is a bottom view showing a state where a clip holding plate and the like have moved forward.

FIG. 17 is an explanatory view showing a state in which a pin of a holding mechanism is pressed down.

FIG. 18 is an explanatory view showing a state in which a leg of the clip is pressed by a pin.

FIG. 19 is an explanatory view showing a state where the rod has moved forward with respect to the clip holding plate.

FIG. 20 is an explanatory view showing a state in which a tie pin arm is closed by advancing a rod.

FIG. 21 is an explanatory diagram showing a configuration of a conventional clip feeder.

FIG. 22 is a cross-sectional view of the clip feeder of FIG. 21.

FIG. 23 is a perspective view showing a clip.

FIG. 24 is an explanatory view showing a state where the advance of the stopper plate of the clip feeder is stopped.

FIG. 25 is an explanatory diagram showing a state in which the advance of the clip holding member of the clip feeder is stopped.

FIG. 26 is an explanatory view showing a state in which the tie pin arm is closed.

FIG. 27 is a perspective view showing a state where the bag mouth is bound by a clip.

[Explanation of symbols]

 22 Arm member 30 Clip holding plate 40 Leg crossing mechanism 50 Opening / closing operation mechanism 60 Second reciprocating drive mechanism K clip

Claims (2)

[Claims] 1. A clip feeding means for sequentially reciprocating a leading clip of a clip band formed by connecting U-shaped and sheet-shaped clips in series to a binding position, and opening and closing the clip feeding means. A leg intersecting means which is provided so as to intersect both leg pieces of the clip by closing, and is provided so as to be capable of reciprocating relative to the clip feeding means in the same direction as the reciprocating movement, whereby the leg is reciprocated by the reciprocating movement. A clip reciprocating device comprising: opening / closing means for opening / closing the one-way crossing means and closing / closing the leg piece crossing means when going forward; a first reciprocating drive means for reciprocating the clip feeding means; A second reciprocating drive means for reciprocating the opening and closing means when the feed means moves forward by the first reciprocating drive means. -Up feeder. 2. A clip feeder according to claim 1, wherein said first and second reciprocating drive means are operated by rotation of one gear cam.