JP2547890B2 - Transfer device in bag-shaped container manufacturing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a transfer device in a bag-shaped container manufacturing apparatus.

2. Description of the Related Art In the Japanese Patent Application No. 1-65686, the inventor of the present invention cuts a tubular film fed from an original fabric, inserts a port member into the opening of the cut tubular film and welds the same, and We proposed a device for manufacturing bag-shaped containers by welding and sealing. In this bag-shaped container manufacturing apparatus, the semi-finished product is conveyed between the steps by gripping the four corners of the tubular film with claws.

The problem to be solved by the invention is that the tubular film hangs down due to its own weight at the intermediate portion and is slackened, and the delivery to the processing device may be deviated and become uncertain, or the product itself may be deformed.

It is an object of the present invention to provide a transfer device that can deliver a semi-finished tubular film with a port member in a stable manner without deformation.

Means for Solving the Problems In order to solve the problems, the present invention cuts a tubular film fed from an original fabric into a predetermined length, and inserts port members into both openings of the tubular film. In a bag-shaped container manufacturing apparatus for manufacturing a bag-shaped container by welding and sealing the remaining opening, a blank is provided on the upstream side of each of the plurality of processing devices arranged on the downstream side of the port member welding device on the work transfer path. And a transfer beam that can reciprocate along the work transfer path and that can move up and down, and a central portion in the length direction of a tubular film in a horizontal posture that is arranged at regular intervals in the transfer beam and is located on both sides in the width direction. A pair of receiving plates supported from below at a position, and a clamp device having an openable and closable clamp arm for holding the tubular film from above on both receiving plates. A transfer device is provided, and a work positioning device is provided on both sides of the transfer beam of the blank, the work positioning device having chuck claws that can be moved apart in a direction in which the tubular film-attached port members are gripped and the tubular film is tensioned.

Operation According to the above configuration, in the blank upstream of the processing device, the work positioning device grips the tubular film-equipped port member with the chuck claws to tension the tubular film to position the tubular film, and to maintain a normal posture. Then, the tubular film between the port members is formed into a cylindrical shape. Then, the clamp device of the transporting device holds and transports the flat portions on both sides of the cylindrical portion at the central portion of the tubular film. With this cylindrical portion, the strength of the tubular film is improved, the horizontal posture is maintained, both ends do not hang down due to the weight of the port member, and stable transport can be performed.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

 First, the outline of the bag-shaped container manufacturing apparatus will be described.

As shown in FIGS.
A film cutting step A provided with a film cutting device 3 for cutting the tubular film 2A fed from
Port members in both cutting openings of the cut tubular film 2B
A port welding step B in which a first welding device 5 for inserting 4A and 4B and thermally welding is provided, and a welding portion 6a and a welding portion 6a for thermally welding both cutting openings of the tubular film 2B to form a bag-shaped container 2C. 2nd having a cooling portion 6b for cooling the seal portion 2a by the welded portion 6a
Shoulder process D provided with welding device 6 and the sealing portion
A trimming process E provided with a trimming device 8 for cutting off unnecessary portions of 2a, a carrying-out process F for carrying out the trimmed bag-like container 2C, a port welding process B and a shoulder sealing process D, and a shoulder sealing process D. During the trimming step E, there are blank steps C1 to C3 respectively arranged between the trimming step E and the carry-out step F, and the film cutting step A to the port welding step B and the cut tubular film 2B. A first transfer device 9 for transferring while holding a cylindrical shape by fitting on the outside, a port welding step B, a blank step C1 to C3 shoulder sealing step D, a trimming step E, and an unloading step F.
And a second transfer device 10 for transferring the tubular film 2B (bag-shaped container 2C) between the respective steps.

As shown in FIG. 4, in the second transfer device 10, the movable base 15 is movably arranged via the guide member 14 on the traveling rail 13 arranged along the transfer path 12 on the base 11. The movable table 15 is connected to the first transfer device 9 via a connecting member 16. On the downstream side of the transfer path 12, a transfer drive device 17 for reciprocating the movable table for one step is disposed on a base 18, and the transfer drive device 17 projects from the movable table 15 to the downstream side. It is composed of a drive pinion 20 that meshes with the rack 19a of the horizontal rack shaft 19 provided, and a transport motor 22 that reciprocally rotates the drive pinion 20 by a predetermined amount via a gear box 21.

A transfer beam 23 along the transport path 12 is arranged on the movable table 15 so as to be able to move up and down via an elevating device 24. That is, the transfer beam 23 has two vertical rack shafts 25 and a pair of lifting guide rods 26 hung at a predetermined interval in the transport direction, and the movable table 15 has a gear box 27 through which the vertical rack shafts 24 penetrate. And a guide case 28 through which the elevating guide rod 25 penetrates, and the output shaft of the reduction gear box 30 driven by the elevating motor 29 arranged on the movable table 15 and the input shaft of the gear box 27 work together. Axis 31 and detector 32
Are interlocked with each other via the detection shaft 32a, and the vertical motor shaft 25 is vertically driven by a pinion (not shown) in the gear box 27 by rotating the interlocking shaft 31 and the detection shaft 32a by the lifting motor 29.

Six clamp devices 33 are disposed on the transfer beam 23 at intervals of one process. This clamp device 32 is shown in FIGS. As shown in FIG. 1, the tubular film 2B with the port members 4A, 4B on the downstream side of the port welding step B expands cylindrically in the direction connecting the welded portions 2a of the port members 4A, 4B to form a cylindrical portion 2b. Has been formed. In the clamp device 32, a concave portion 35 corresponding to the cylindrical portion 2b is formed on the upper surface of a frame plate 34 fixed at a constant interval in the horizontal direction orthogonal to the transport path 12, and the frame plates 34 on both sides thereof are formed. Cylindrical part
A receiving plate 36 that supports the central position of the flat surface portion 2c on both sides of 2b from below is attached. Further, a base end portion is rotatably supported between the frame plates 33 via support shafts 37A, 37B, and a pair of L-shaped clamp arms 39A, 39A, 38B having passive gears 38A, 38B formed on the outer periphery of the base end portion. 39B is disposed, and a clamp member 40 capable of holding the plan view 2C of the tubular film 2B on the receiving side plate 36 on the mounting side at the tip of the L-shaped clamp arms 39A, 39B.
Are installed respectively. Further, at the lower part between the frame plates 33, a rack rod 42A, which is connected via an adjusting bolt 41,
42B is slidably arranged in the direction along the transport path 12, the rack 42a of one rack rod 42A meshes with the passive gear 37A of the clamp arm 39A, and the rack 42b of the other rack rod 42B has an intermediate gear. The passive gear 37B of the clamp arm 39B is meshed via 43. As shown in FIG. 4, the rack rods 42A, 42B of the clamp device 32 are connected to each other via a connecting shaft 44, and the transfer path 12
It is driven by a clamp cylinder 45 arranged on the transfer beam 23 on the downstream side of. An open / close detector 46 detects the position of the upstream end of the connecting shaft 44, that is, the open / close state of the L-shaped clamp arms 39A, 39B.

On the other hand, a work positioning device 51 is arranged in each of the blank steps C1 to C3. This work positioning device 51
As shown in FIG. 5, the holding devices 53 are arranged so as to face each other on a pair of columns 52 standing upright on both sides of the transfer path 12 in the blank steps C1 to C3. This holding device 53
As shown in FIGS. 6 to 9, the transport path is formed on the base plate 54.
An outer end plate of the base plate 54 is provided with a slide base 56 that is movable via a pair of slide rods 55 in a direction orthogonal to 12
Piston rod of positioning cylinder 58 mounted on 57
58a is connected to the slide base 56 so that the transfer path 12
Moved to and from the side. This slide table 56 has a transport path 12
An opening / closing device (rotary actuator) 60 having a pair of left and right chuck claws 59 that can be opened and closed is provided on the side. These chuck claws 59 are formed with semicircular gripping concave portions 59a corresponding to the main bodies 4a of the port members 4A and 4B so that the collar portions 4b of the port members 4A and 4B can be locked, and the chuck claws 59 are arranged on the base plate 54. The notch 59b that allows the insertion of the installed port receiver 61 is the chuck claw 59.
Is formed at the bottom of. Furthermore, between the chuck claws 59,
A pusher 62 that pushes the port members 4A and 4B toward the transport path 12 side and abuts the collar portion 4b against the inner surface of the chuck claw 59 to correct the inclination of the port members 4A and 4B is provided, and the pusher 60 is an opening / closing device.
The push cylinder 64 on the slide base 56 moves in and out via a push rod 63 penetrating the upper and lower portions of 58. Therefore, when the port members 4A and 4B with the tubular film 2B are placed on the port receivers 61 between the chuck claws 59 which are in the open state at the projecting position shown by the phantom line in FIG. 59 is closed to grip the main body 4a of the port member 4A, 4B with the grip recess 59a, and then the push cylinder 64 projects the push 62 to push the flange 4b of the port member 4A, 4B onto the inner surface of the chuck claw 59. Correct the inclination of the contact auto members 4A, 4B and operate the positioning cylinder 58 to hold both holding devices.
The slide bases 56 of 53 are separated from each other, and the tubular film 2B is tensioned for positioning, and the cylindrical portion 2b is formed in the tubular film 2B at the corresponding portion between the port members 4A and 4B to improve the posture maintaining strength. be able to.

In the above structure, the respective port members 4 processed by the first welding device 5, the second welding device 6 and the trimming device 8 and held by the respective work positioning devices 51.
As shown in FIG. 4, the cylindrical film 2B with A and 4b (including the bag-shaped container 2C) is provided with the clamp device 33 of the second transfer device 10 from the upper limit position (a) to the L-shaped clamp arm 39A, With the 39B open, the tubular film 2B is received on the receiving plate 36 by raising it to the receiving position (B), and the L-shaped clamp arm 39A,
39B is closed and the tubular film 2B is clamped. At this time, the clamping means of each device 5, 6, 8, 51 is in the open state. Then, the clamp device 33 is moved to the upstream upper limit position (c), moved to the downstream upper limit position (d), and then transferred to the transfer position (e).
Then, the tubular film 2B is passed down to the processing devices 6 and 7, the positioning device 51, and the conveyor of the carry-out process F.
The clamp device 33 is lowered to the downstream lower limit position (to) and then returned to the upstream lower limit position (a).

The work positioning device 51 that has received the tubular film 2B is
The chuck claws 59 grip the port members 4A and 4B to tension the tubular film 2B to position the tubular film 2B and correct its posture.

According to the above embodiment, in the blanking steps C1 to C3 provided on the upstream side of the shoulder sealing step D, the trimming step E, and the discharging step F, the port members 4A and 4B with the tubular film 2B are grasped by the chuck claws 59 and separated. And tensioning forms a cylindrical portion 2b between the port members 4A, 4B at the center of the tubular film 2B, and the receiving plate 36 of the clamp device 33 and the clamp members of the L-shaped clamp arms 39A, 39B form a cylindrical portion. When holding the flat portion 2c on both sides of 2b, the shape of the cylindrical portion 2b can be maintained, and even if the own weight of the port members 4A and 4B is applied to both ends of the tubular film 2B, both ends of the tubular film 2B do not hang down, Stabilize the tubular film 2B with port members 4A, 4B to the next step D, E, F
Can be handed over to.

In addition, the clamp portion of the tubular film 2B in the second transport device 10 is only two points in the central portion of the tubular film 2B, and the clamp device 33 can be simplified as compared with clamping the four corners of the tubular film 2B. At the same time, the center of the tubular film 2B does not hang down.

As described above, according to the present invention, by pulling the port member by the work positioning device provided on the blank to tension the tubular film in the longitudinal direction, the tubular film between the port members is cylindrical. Since both sides of the cylindrical portion are clamped by the clamp device, the strength of the tubular film can be increased, and even if only the central portion in the lengthwise direction is clamped, the weight of the port member causes sagging at both ends. Stable transportation can be performed without Also, since the clamp part is only on both sides of the central part of the tubular film,
Compared to clamping the four corners, the clamping device can be simplified, the transport device can be made compact, and there is little interference with other devices, resulting in a high degree of freedom.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show one embodiment of the present invention. FIG. 1 is a perspective view of a clamping device, FIG. 2 is a front sectional view of the same, and FIG. 3 is a sectional view taken along line I-I shown in FIG. Figures and 4 are side views of the entire second transfer device,
FIG. 5 is a front view of the work positioning device, FIGS. 6 and 7 are plan and front views of the holding device, FIG. 8 is a view taken along the line II-II shown in FIG. 6, and FIG. Section III sectional view shown in FIG. 7, FIG. 10 is an overall plan view of the bag-shaped container manufacturing apparatus, FIG.
The figure is an explanatory view of the same process. B ... Port welding process, C1-C3 ... Blank process, D ...
… Shoulder sealing process, E… Trimming process, F…
… Outgoing process, 2B… Cylindrical film, 2a… Welded part, 2b…
… Cylindrical part, 2c… Flat part, 4A, 4B… Port member, 4b…
... collar part, 5 ... first welding device, 6 ... second welding device, 8
...... Trimming device, 10 …… Second transport device, 15 …… Movable stand, 17 …… Transport drive device, 24 …… Elevating device, 33 …… Clamp device, 36 …… Receiving plate, 39A, 39B …… L Shaped clamp arm, 40 …… Clamping member, 44 …… Coupling shaft, 45 ……
Clamp cylinder, 51 …… Workpiece positioning device, 53 ……
Holding device, 56 …… Slide base, 58 …… Positioning cylinder, 59 …… Chuck claw, 59a …… Grip recess, 60 …… Opening / closing device, 61 …… Port receiver, 62 …… Pusher.

Claims (1)

(57) [Claims] 1. A tubular film fed out from an original fabric is cut into a predetermined length, and port members are respectively inserted into both openings of the tubular film for welding and the remaining portion of the opening is welded and sealed. In a bag-shaped container manufacturing apparatus for manufacturing a bag-shaped container, blanks are provided on the upstream sides of a plurality of processing devices arranged on the downstream side of the port member welding device in the work transfer path, and can be reciprocally moved along the work transfer path. And a vertically movable transfer beam, a pair of receiving plates and two receiving plates which are arranged at regular intervals in the transfer beam and which support the central portion in the length direction of the horizontal film from below at both lateral positions in the width direction. A transfer device provided with a clamp device having an openable / closable clamp arm that holds a tubular film from above on a plate is provided. A transfer device in a bag-shaped container manufacturing apparatus, characterized in that a work positioning device having chuck claws capable of separating and moving in a direction in which the tubular film-attached port member is gripped and the tubular film is tensioned is provided on both sides of the frame. .