JP3714222B2 - Clip cutting mechanism in clip binding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clip binding machine in which a clip formed of a plastic thin piece is attached to a neck portion of a packaging bag, and the clip neck is formed into a conical shape so as to bind the bag neck portion. The present invention relates to a mechanism for cutting and separating the first clip from the clip.
[0002]
[Prior art]
In order to close the mouth of the bag containing food such as bread or vegetables, the opening 2 opened toward one end so as to accommodate the neck portion of the bundled bag as shown in FIGS. Is formed in the center portion, and a clip 1 formed of a plastic thin piece formed with a pair of leg pieces 3 formed on both sides of the opening portion 2 is used, and the contents are transferred to the opening portion 2 of the clip 1. The constricted neck portion of the accommodated bag mouth is inserted, and the pair of leg pieces 3 of the clip 1 are polymerized so as to intersect with each other, and formed into a conical shape so that the opening 2 becomes the apex. 2. Description of the Related Art A clip binding machine is already known that binds a neck portion of a packaging bag containing contents by fixing a superposed portion by caulking or welding.
[0003]
The clip 1 is formed such that the front ends of both leg pieces 3 facing forward are integrally connected to the rear end edge of the front clip via a connecting portion 3a having a small cross-sectional area and wound in a coil shape. It is loaded into the binding machine. The loaded clips are sequentially supplied to the binding unit by the clip supply mechanism. A pair of leg pieces 3 projecting toward the front of each clip is formed with a through hole 4, and the leg pieces 3 are molded so as to overlap each other by a leg shifting pin that engages with the through hole 4. . The clips are sequentially supplied toward the bundling portion by moving forward with the leg shifting pins engaged with the through holes 4 of the leading clip. Further, during the bundling operation in which both leg pieces 3 of the leading clip 1 are overlapped by the leg shifting pin, the first clip is pulled forward with respect to the second clip, and the leading clip is moved to the subsequent clip and the small clip. The bag mouth is bound by the leading clip separated from the connecting portion 3a having the cross-sectional area.
[0004]
[Problems to be solved by the invention]
In the above mechanism, the first clip connected during the bundling operation by the leg shifting pin is pulled forward with respect to the second clip, so that the leg shifting pin engaged with the leading clip is cut. The link mechanism for operating the leg support pin by being pulled backward by the resistance of time and the related mechanism for operating this link mechanism are pulled backward, and the amount of operation of the leg support pin operated by the link mechanism varies. However, there is a case that the amount of leg shifting for overlapping the both leg pieces of the clip becomes unstable. As described above, when the amount of the leg shifting by the leg shifting pin is unstable, a binding defect occurs. It is an object of the present invention to provide a clip cutting mechanism that can stabilize the amount of leg-feeding without causing an excessive load to act on the leg-feeding pins during bundling operation, and can keep the amount of polymerization of both leg pieces of the clip constant. It is what.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, the clip cutting mechanism in the clip binding machine according to the present invention is configured to engage the leg shifting pin with the leading clip during the supply operation of the clip that supplies the connected clip toward the binding unit, An operating piece having a clip cut pin engageable with the second clip is provided, and a relative movement is performed between the operating piece and the leg shifting pin during the feeding operation, so that the leading clip and the second clip It is characterized in that it is made to cut between the clips of the position.
[0006]
According to a second aspect of the present invention, the lower support case is supported by the lower case, and the lower case is movably supported on the carrier supporting the operating piece, and the lower case is pivotally supported on the carrier at one end side. At the same time, the link pin loosely fitted in the guide cam groove formed in the chassis is engaged with the link pin of the link provided on the other end side, and is rotated by the guide cam groove as the carrier moves. The lower case is configured to move forward relative to the carrier via a link pin by the link.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to examples shown in the drawings. FIG. 1 is a perspective view showing the entire clip binding machine by opening the upper cover of the clip binding machine employing the clip cutting mechanism of the present invention. The clip binding machine 5 is provided with a main body housing 7 at the upper end of a post erected on a support leg 6, and in the main body housing 7, a clip supply mechanism for sequentially supplying clips toward the binding portion, a bag mouth A clip-legging mechanism for forming the clip into a substantially conical shape by operating the two leg pieces of the clip attached to the neck of the clip, and a clip caulking mechanism for fixing the two leg pieces of the superposed clip, and these The main mechanism which comprises clip binding machines, such as a motor which drives each of these mechanisms, is arranged.
[0008]
As shown in FIG. 8, the clips 1 connected to each other are wound in a coil shape, loaded into a magazine 8 formed at the rear of the main body housing 7, and supplied to the binding portion by the clip supply mechanism in the main body housing 7. It is attached to the neck portion of the bag P disposed in the guide groove 9 that guides the bag mouth to converge and position it in the binding portion (see FIG. 9), and the leg pieces 3 of the clip 1 are pulled together by the leg shifting mechanism. The two leg pieces 3 are molded so as to cross each other, and the two leg pieces 3 of the superposed clip 1 are joined by a caulking mechanism or a welding mechanism to complete the binding. As shown in FIG. 9, when the binding is completed, the clip 1 surrounds the neck of the bag and is formed into a conical shape.
[0009]
FIG. 2 is a perspective view showing a disassembled state in order to show the configuration and shape of the main components constituting the supply mechanism of the clip 1, the leg shifting mechanism of the clip, etc. arranged in the main body housing 7. The carrier 10 is slidably disposed in the main body housing 7 along the supply direction of the clip 1. On the lower surface side of the carrier 10, an operation gear 11 having a drive pin 11a arranged on a circumference is rotatably arranged by a drive motor, and the drive pin 11a is formed in a cam groove 10a formed in the rear portion of the carrier 10. The carrier 10 is reciprocated along the supply direction of the clip 1 by loosely fitting and rotating the operation gear 11.
[0010]
A lower case 12 forming a supply guide surface of the clip 1 is disposed on the upper surface side of the carrier 10, and a supply unit 13 is disposed on the upper surface side of the lower case 12. A supply guide surface of the clip 1 is formed between the lower case 12 and the supply unit 13 that are integrally stacked in the vertical direction. The lower case 12 and the supply unit 13 are integrally coupled, and the clip 1 is supplied and guided forward along a clip guide surface 12 a formed on the upper surface of the lower case 12. Further, a long hole 12b is formed in the lower case 12 along a direction orthogonal to the supply direction. The long hole 12b is formed on the other end side of the link 14 whose one end is pivotally supported on the carrier 10. The link pin 14a is loosely fitted, and the lower end portion of the link pin 14a protrudes from the back surface side of the carrier 10 through an arcuate guide hole 10b formed in the carrier 10, and is arranged on the lower surface side of the carrier 10. It is loosely fitted in a cam groove 15 formed in the chassis. The lower case 12 and the supply unit 13 are operated in conjunction with the slide operation of the carrier 10 via the link 14. The cam groove 15 formed in the chassis is formed with a parallel portion 15a extending in parallel with the moving direction of the carrier 10 and an inclined portion 15b continuous with the parallel portion 15a, and the link pin of the link 14 as the carrier 10 moves. 14a is guided by the inclined portion 15b, the link 14 is tilted, and the lower case 12 is moved forward relative to the carrier 10 as the carrier 10 moves.
[0011]
On the upper surface of the supply unit 13, there is disposed a leg shifting mechanism 16 that pulls the leg pieces 3 (see FIG. 8) of the clip 1 together so that the leg pieces 3 intersect each other in an overlapping manner. The leg shifting mechanism 16 includes a pair of leg shifting members 17 provided at the tip thereof with leg shifting pins 18 that engage with the through holes 4 formed in the leg pieces 3 of the leading clip and operate the leg pieces 3. It is comprised from the operation member 20 which act | operates the said leg shift member 17 via the link 19 connected with the edge part of this leg shift member 17. FIG. The pair of leg shifting members 17 are pivotally supported together on the upper surface of the supply unit 13 at the inner ends, and the leg shifting pins 18 at the tip are rotated in a direction crossing the clip supply direction. The operation member 20 is supported on the upper surface of the supply unit 13 so as to be slidable along the supply direction of the clip 1, and is connected to the outer end portions of the pair of leg shifting members 17 via the link 19. As a result of the sliding movement with respect to the supply unit 13, the leg shifting member 17 is rotated about the pivot point and the leg shifting pin 18 is actuated.
[0012]
A clip cutting mechanism 21 is formed at the front portion of the carrier 10 to cut the connection state of the clip between the leading clip 1a and the second clip 1b in cooperation with the leg shifting mechanism 16. . The clip cutting mechanism 21 is configured by an operating piece 23 having a clip cut pin 22 that engages with the through hole 4 of the second clip 1b disposed on the upper surface of the lower case 12 at the front end, An operating piece 23 is rotatably supported by a bracket portion 24 formed at the front end portion of the carrier 10. A protrusion 25 is formed on the rear end of the operating piece 23 so as to protrude downward, and the protrusion 25 is a cam portion formed on the chassis that is fixedly disposed on the lower surface side of the carrier. 26, the operating piece 23 is rotated about the pivot point so that the clip cut pin 22 is engaged with and disengaged from the through hole 4 of the clip 1 b at the second position.
[0013]
The operation of cutting the clip according to the above embodiment will be described below with reference to FIGS. In the initial operation of the carrier 10, as shown in FIGS. 3 and 5, the protrusion 25 at the rear end of the operating piece 23 is in contact with the raised portion 26a on the rear side of the cam portion 26 formed on the chassis. Therefore, the clip cut pin 22 is not engaged with the through hole 4 (see FIG. 2) of the second clip 1b. The leg shifting pin 18 supported by the supply unit 13 (see FIG. 2) is engaged with the through hole 4 of the leading clip 1a. The link pin 14a of the link 14 is loosely fitted in the parallel portion of the guide cam groove 15 formed in the chassis, and the link pin 14a becomes parallel to the parallel portion 15a of the guide cam groove 15 as the carrier 10 moves (see FIG. 2). The link 14 is moved integrally with the carrier 10 while maintaining a constant angle, and the lower case 12 having the long hole 12a in which the link pin 14a is loosely fitted in the long hole 12a is connected to the carrier 10. It moves forward in an integrated state. The supply unit 13 that is integrally coupled to the lower case 12 is also moved forward integrally and engaged with the leg shifting pin 18 of the leg shifting mechanism 16 supported by the supply unit 13 as shown in FIG. The leading clip 1a and the clip connected thereto are supplied toward the binding position.
[0014]
When the carrier 10 further moves forward, as shown in FIGS. 4 and 6, the protrusion 25 at the rear end portion of the operating piece 23 provided at the front portion of the carrier 10 is protruded from the raised portion 26a of the cam portion 26 formed in the chassis. As a result, the operating piece 23 rotates as shown in FIG. 7B, and the clip cut pin 22 engages with the through hole 4 of the clip 1b in the second position. At this time, the link pin 14a of the link 14 has reached the inclined portion 15b of the guide cam groove 15, and as the carrier 10 further advances, the link is guided to the inclined portion 15 of the cam groove and rotated. The long hole 12 a in which the 14 link pins 14 a are loosely fitted is moved forward relative to the carrier 10. That is, when the supply unit 13 engaging the leading clip 1a integral with the lower case 12 moves relative to the carrier 10 locking the second clip 1b, FIG. ), An opening occurs between the leading clip 1a and the second clip 1b, and the clip is cut at the connecting portion 3a having a small cross-sectional area.
[0015]
Further, as shown in FIG. 7D, the carrier 10 advances and the protrusion 25 of the operating piece 23 engages with the raised portion 26b in front of the cam portion 26 formed in the chassis, whereby the operating piece 23 is moved. As a result, the click tie pin 22 is detached from the through hole 4 of the second clip 1b. Thereafter, the leading clip 1a is fitted into the neck portion of the bag disposed in the guide groove 9 (main body housing 7) for converging and guiding the neck portion of the bag, and is formed on the leg pieces 3 of the clip. The leg pieces 3 are attracted and overlapped with each other by the leg shifting pin 18 of the leg shifting mechanism 16 engaged with the hole 4, and further, the overlapping leg pieces 3 of the clip are fixed by a crimping mechanism (not shown) or the like. Then, the bag mouth is bound as shown in FIG.
[0016]
【The invention's effect】
As described above, according to the clip cutting mechanism of the present invention, when the clip is supplied before the bundling operation by the leading clip is performed, the leading clip and the second clip are relatively pulled and cut. Since the leading clip is cut during the bundling operation by the leg shifting mechanism, the pulling force due to the clip connecting portion does not act on the link of the leg shifting mechanism during the bundling of the clip. Stroke is stabilized and it is possible to prevent a binding failure.
[0017]
In addition, the carrier moves via a link that supports the lower case supporting the leg shifting mechanism that engages with the leading clip and the carrier that supports the operating piece that engages with the second-position clip. The lower case can be moved forward relative to the carrier during the clip feeding operation, and the clip can be cut with a simple mechanism. Is possible.
[Brief description of the drawings]
FIG. 1 is a perspective view of a clip binding machine according to an embodiment of the present invention with a cover removed. FIG. 2 is an exploded perspective view showing a main configuration of the clip binding machine housed in a housing. FIG. 4 is a plan view showing the state of each part before the clip is cut. FIG. 4 is a plan view showing the state of each part after the clip is cut. FIG. 5 is a perspective view of the main part in the same state as FIG. The perspective view of the principal part of the same state as FIG. 4 [FIG. 7] It is a side view which shows the operation state which shows the state in which a clip is cut | disconnected, (a) is the state in which the clip is supplied in the connection state, (b) Is the state in which the clip cut pin of the working piece is engaged with the clip in the second position, (c) is the state in which the leg shifting pin is relatively moved and the clip is cut, and (d) is the leading edge of the leg shifting pin. FIG. 8 shows a state in which the clips are bound together. Perspective view showing a state in which the neck portion of the bag mouth has been bundled by the plan view and FIG. 9 clip clips EXPLANATION OF REFERENCE NUMERALS
DESCRIPTION OF SYMBOLS 1 Clip 2 Opening part 3 Leg piece 3a Connection part 4 Through-hole 5 Clip binding machine 6 Support leg 7 Main body housing 8 Magazine 9 Guide groove 10 Carrier 10a Cam groove 10b Guide hole 11 Actuation gear 11a Drive pin 12 Lower case 12a Clip guide surface 12b Long hole 13 Supply unit 14 Link 14a Link pin 15 Guide cam groove 15a Parallel portion 15b Inclined portion 16 Leg shift mechanism 17 Leg shift member 18 Leg shift pin 19 Link 20 Actuating member 21 Clip cutting mechanism 22 Clip cut pin 23 Actuating piece 24 Bracket Part 25 projection 26 cam part 26a raised part 26b raised part

Claims (2)

Clips that are integrally connected to each other are supplied toward the binding part, the top clip is attached to the neck part to the material to be bound, and the overlapping part is fixed by forming it into a conical shape so that both leg pieces of the clip are superposed In the binding machine designed to let you
During the feeding operation of the clip that feeds the clip in the connected state toward the bundling part, the leg piece is engaged with the leading clip, and the operating piece having the clip cut pin that can be engaged with the second clip is provided. A clip bundling machine characterized in that it is cut between a leading clip and a second clip by providing a relative movement during supply operation between the operating piece and the leg shifting pin. Clip cutting mechanism. The leg support pin is supported by the lower case, and the lower case is movably supported on the carrier supporting the operating piece, and the lower case is supported on one end side of the carrier and guided in the chassis. The link pin loosely fitted in the cam groove is engaged with the link pin of the link provided on the other end side, and the lower case through the link pin by the link rotated by the guide cam groove as the carrier moves. The clip cutting mechanism in the clip binding machine according to claim 1, wherein the clip binding mechanism is configured to move forward relative to the carrier.

Images