JPH0568808U - Synthetic resin roll continuous bag feeding device - Google Patents

Abstract

(57) [Summary] [Purpose] Automatically separate and open both side pieces attached at the perforations for cutting of individual bags of a roll-shaped continuous bag. [Structure] When the rotation driving means (12) is operated, a pair of feed rollers (9) and (18) sandwich the continuous bag (1) and rotate it, whereby the continuous bag (1) is sent out. When the lateral movement means (26) is operated at an appropriate timing during this feeding, at least one feeding roller (18) is moved in the axial direction, and the continuous bag (1) has both side pieces that overlap each other. Since the opening is forcibly pulled apart by shifting to the left or right, it is possible to save the trouble of opening the opening during use.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a thin synthetic resin tube in which the band-shaped fusion-sealing part and the perforations for cutting in the vicinity thereof are provided at equal intervals in advance, and the perforations are sequentially cut from the end to form one bag. The present invention relates to a resin roll continuous bag feeding device.

[0002]

[Prior Art]

 FIG. 8 shows the above-mentioned synthetic resin continuous roll bag (1) that is frequently used for service in supermarkets, etc., and is placed in a large number of thin and long synthetic resin cylinders (2) made of polyethylene, for example. The strip-shaped fusion-sealed part (3) and the cutting perforations (4) adjacent to the band-shaped sealed part (3) are provided at equal intervals in advance, and a large number of bags (5) are continuously formed. This product is used by cutting the earliest bag (5) sequentially by hand at the perforation (4) at the rear end thereof.

[0003]

[Problems to be solved by the device]

 However, in the cut-out one bag (5), both side pieces (5a), (5b) of the opening are attached at the perforations (4), so conventionally this was opened by separating it with the fingertip. However, since the bag (5) is thin and flexible and it is difficult to separately pinch both side pieces (5a) and (5b), there is a problem in that it takes time and effort unexpectedly for the opening.

It is an object of the present invention to provide a synthetic resin roll continuous bag feeding device which is supplied in a state where the continuous bag is easily opened.

[0005]

[Means for Solving the Problems]

 According to the present invention, a pulled out portion of a synthetic resin roll-shaped continuous bag pivotally supported on a substrate is gripped by a pair of feed rollers pivotally supported on the substrate, and at least one of the feed rollers is used as a rotation driving means. In a device in which the continuous bag is fed by a required amount by connecting and operating the rotation driving means, at least one of the feeding rollers is pivotally supported on the substrate so as to be movable in the axial direction, and the substrate is In order to solve the above-mentioned problem, a lateral moving means for reciprocating one of the feeding rollers in the axial direction is provided in synchronism with the timing of feeding the continuous bag by the feeding rollers. ..

[0006]

[Action]

 When the rotation driving means is actuated, the pair of feed rollers sandwiches the continuous bag and is rotated, whereby the continuous bag is delivered. When the lateral movement means is operated at an appropriate timing during this feeding, at least one feeding roller is moved in the axial direction, and the continuous bag overlaps with each other. Since they are forcibly pulled apart, the trouble of opening the opening during use can be saved.

[0007]

【Example】

 1 to 5 show a first embodiment of the present invention. As shown in FIG. 3, a horizontal substrate (6) is provided on the rear surface of the horizontal synthetic resin roll-like bag ( 1) is rotatably supported by a support frame (7), and an end of the support frame (7) is allowed to pass through a rectangular through hole (8) formed in the substrate (6).

As shown in FIGS. 1 and 2, the upper part of the front surface of the substrate (6) is parallel to the continuous roll bag (1) and its length is slightly larger than the width of each bag (5). A roller shaft (10) of a first rubber roller (feed roller) (9) having a short circumference and a length equal to the length of the bag (5) is pivotally mounted with a bearing (11) so as not to move laterally. ..

The right end of the roller shaft (10) is connected to a deceleration motor (rotational drive means) (12) provided around the upper right portion of the front surface of the substrate (6) with a coupling (13) to form a first rubber roller. (9) rotates in the direction of the arrow at an appropriate speed. (14) is a pushbutton switch for manual operation for supplying power to the motor (12).

At the left end of the roller shaft (10), a drive gear (15) having the same diameter as that of the first rubber roller (9) is fitted, and between the drive gear (15) and the left bearing (11). Has a short pin (16) protruding in a right angle direction.

On the board (6) behind the pin (16), a motor control micro that is opened and closed by a pin (16) rotating with the roller shaft (10) to stop the rotation of the motor (12). A switch (17) is provided. This micro switch (17) is a normally closed switch that opens only when it is pressed by the pin (16) and closes the rest, as shown in Fig. 5, between the motor (12) and the power supply (V). Is connected in parallel with the pushbutton switch (14).

Directly below the first rubber roller (9) on the front surface of the substrate (6), a second rubber roller (feed roller) which is parallel to the first rubber roller (9) and has an equal length and an equal length and which is in pressure contact with the first rubber roller (9) over substantially the entire length. The roller shaft (19) of (18) is rotatably supported by the bearing (11) so that the roller shaft (19) is slightly laterally moved, and the end of the continuous roll bag (1) is located between the rubber rollers (9) and (18). It is sandwiched.

A driven gear (20) having the same number of teeth as the drive gear (15) and a narrower width than that of the drive gear (15) is fitted on the left end of the roller shaft (19) and meshes with the drive gear (15). ..

The second rubber roller (18) is biased rightward by a compression spring (21) wound around the roller shaft (19) between the main body of the second rubber roller (18) and the left bearing (11).

At the right end of the roller shaft (19), a pivot shaft (22) orthogonal to it is projected, and a cam follower (23) which is a small-diameter roller is pivotally installed at the pivot shaft (22).

On the right side of the second rubber roller (18) on the front surface of the substrate (6), a disc cam (24) that directly intersects with the roller shaft (19) is provided around the bracket (25), On the left surface of the cam (24), a cam surface (24c) having a ridge (24a) and a recess (24b) continuous in the circumferential direction is formed, and the cam surface (42c) has a cam surface (42c). The follower (23) is constantly pressed by the spring (21).

Thus, the disc cam (24), the cam follower (23), the spring (21), etc. form a lateral movement means (26) for moving the second rubber roller (18) in the axial direction thereof. There is.

In the above-mentioned device, as shown in FIG. 5, the push button switch (14) and the micro switch (17) are normally opened, the motor (12) is stopped, and the roll-shaped continuous bag (1) is always provided. A little rearward of the perforation (4) at the end of the is clamped between the first and second rubber rollers (9) and (18), and the cam follower (23) is located at the ridge () of the disc cam (24). The spring (21) is compressed in pressure contact with 24a).

In this state, when the push button switch (14) is manually closed for a short time, as shown in FIG. 2, the motor (12) and the first and second rubber rollers (9) (18) move in the arrow direction. Since the pin (16) rotates together with the pin (16), the normally closed micro switch (17) is opened and closed.After that, even if you release your hand from the push button switch (14), both rubber rollers will be rotated by the motor (12). (9) (18) continues to rotate and sends out the roll-shaped continuous bag (1).

Shortly after the motor (12) is started, the cam follower (23) that rotates with the second rubber roller (18) rolls into the recessed portion (24b) of the disc cam (24) by the bias of the spring (21). Then, the second rubber roller (18) moves to the right while rotating.

At this time, the portions immediately after the perforations (4) on both side pieces of the roll-shaped continuous bag (1) that are in pressure contact with both rubber rollers (9) (18) are shifted to the left and right, and at the perforations (4). The end of the attached bag (5) is forcibly separated and opened.

When two-thirds of the total length of the bag (5) is sent out by the rubber rollers (9) (18) that rotate continuously, the cam follower (23) causes the ridge () of the disc cam (24) to move. After riding on 24a), the second rubber roller (18) moves to the left against the spring (21), and returns to the position when the motor (21) was started.

When both rubber rollers (9) (18) rotate once and the perforation (4) of the roll-shaped continuous bag (1) passes between both rubber rollers (9) (18), the pin (16) The micro switch (17) is opened, the motor (12) is stopped, each member of this device returns to the state before starting the motor (12), and prepares for the next delivery of the roll-shaped continuous bag (1).

After that, the earliest bag (1) is torn by hand along the perforations (4) immediately before the rubber rollers (9) and (18), and the opening is immediately opened to put the purchased product inside. Can be put in. The timing of moving the second rubber roller (18) to the right should be adjusted to the initial stage of feeding the continuous roll-shaped bag (1).

As shown in phantom lines in FIGS. 1 and 2, the raised portion (24a) of the disc cam (24) is provided on the right side surface of the right bearing (11) pivotally supporting the second rubber roller (18). ), A disc cam (27) having a cam surface (27c) having a recessed portion (27a) and a raised portion (27b) formed at a portion facing the recessed portion (24b) is fixed. A cam groove (28) that sandwiches the cam follower (23) from the left and right may be formed by the both disc cams (24) and (27) so as to have substantially the same action as a cylindrical cam.

That is, with such a cylindrical cam structure, the second rubber roller (18) can be forcibly moved not only to the left but also to the right, and the spring (21) can be omitted. You can

It should be noted that the base plate (6) has a cylindrical shaft (19) which is concentric with the roller shaft (19) of the second rubber roller (18) and has a cam groove similar to the above-mentioned cam groove (28) on its inner surface. Alternatively, the cam follower (23) may be engaged with the cam groove.

FIG. 6 shows a second embodiment of the present invention. The same members as those in the first embodiment are designated by the same reference numerals and illustrated, and detailed description thereof will be omitted (the same applies to the third embodiment).

In the second embodiment, one end of the roller shaft (19) of the second rubber roller (18), which is one of the feeding rollers, is provided with a bent portion (a part of the peripheral edge) bent in the roller shaft (19) direction ( A pair of holding rollers (33) pivotally attached to the base plate (6) with a shaft (32) by fixing a disc cam (31) having a disc (31a). Thus, the lateral movement means (34) is configured so as to be sandwiched from both sides.

According to the configuration of the second embodiment, the disc cam (31) rotates integrally with the second rubber roller (18), and the bent portion (31a) of the disc cam (31) holds the both holding rollers (31a). When passing through the space 33), the roller shaft 19 and the second rubber roller 18 are moved to the right, and the same action and effect as those of the first embodiment can be obtained.

FIG. 7 shows a third embodiment of the present invention. In the third embodiment, the lateral movement means (41) is provided on the substrate (6), and the plunger (42) has a joint (43) and is rotatable relative to the roller shaft (19). It is as an electromagnetic solenoid (44) connected to each other immovably.

The electromagnetic solenoid (44) is operated at a required timing based on the number of rotations of the motor (12) from the start of operation, the rotation angle of the second rubber roller (18), etc. By moving the rubber roller (18) in the axial direction, the same action and effect as those of the first embodiment can be obtained.

[0033]

[Effect of the device]

 When the device of the present invention is used, the individual bags cut from the roll-shaped continuous bag have both side pieces attached at the perforations at the ends, which are once separated and opened, so that the products etc. It can be inserted instantly and is extremely convenient.

[Brief description of drawings]

FIG. 1 is a front view showing a state when a motor of a first embodiment of the present invention is stopped.

FIG. 2 is likewise a front view showing a state in which a continuous roll-shaped bag is being fed.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is an electrical wiring diagram of the first embodiment.

FIG. 6 is a sectional view of an essential part of a second embodiment of the present invention.

FIG. 7 is a sectional view of an essential part of a third embodiment of the present invention.

FIG. 8 is a perspective view of a continuous roll bag.

[Explanation of symbols]

(1) Roll-shaped continuous bag (2) Synthetic resin tube (3) Strip-shaped sealed portion (4) Perforation (5) Bag (5a) (5b) Side piece (6) Board (7) Support frame (8) through Hole (9) First rubber roller (feed roller) (10) Roller shaft (11) Bearing (12) Reduction motor (rotational drive means) (13) Coupling (14) Pushbutton switch (15) Drive gear (16) Pin (17) Micro switch (18) Second rubber roller (feed roller) (19) Roller shaft (20) Driven gear (21) Compression spring (22) Axis (23) Cam follower (24) Disc cam (24a) Raised part (24b) Recessed portion (24c) Cam surface (25) Bracket (26) Lateral movement means (27) Disc cam (27a) Recessed portion (27b) Raised portion (27c) Cam surface (28) Cam groove (31) Disc cam (31a) Bending part (32) Shaft (33) Holding roller (34) Side moving means (41) Side moving means (42) Plunger (43) Joint (44) Electromagnetic solenoid (V) Power supply

Claims (5)

[Scope of utility model registration request] 1. A pull-out portion of a synthetic resin roll-shaped continuous bag pivotally supported on a substrate is gripped by a pair of feed rollers pivotally supported on the substrate, and at least one of the feed rollers serves as a rotation driving means. In a device in which the continuous bag is sent out by a required amount by connecting and operating the rotation driving means, at least one of the both feed rollers is pivotally supported on the substrate so as to be movable in the axial direction, and the substrate is And a side-moving means for reciprocating one of the feeding rollers in the axial direction in synchronization with the timing of feeding the continuous bags by the two feeding rollers. . 2. A lateral movement means is fixed to the substrate so as to be orthogonal to the axis of the feed roller outside the one end of the feed roller movable in the axial direction, and the side surface on the feed roller side. A disc cam having a cam surface having a raised portion formed on the disc, and an eccentric portion of the shaft of the feed roller, which rotates integrally with the feed roller,
The synthetic resin roll-like continuous according to claim 1, comprising a cam follower that moves along the cam surface, and a biasing means that biases the shaft of the feed roller in a direction in which the cam follower presses against the cam surface. Bag delivery device. 3. A cylinder which is concentric with the shaft of a feed roller movable in the axial direction and has a cam groove partially bent in the axial direction and which is fixed to a substrate. The cam and the shaft of the feed roller protrude in the radial direction, and rotate integrally with the feed roller,
The delivery device for a synthetic resin roll-shaped continuous bag according to claim 1, comprising a cam follower that moves along the cam groove of the cylindrical cam. 4. A disc cam having lateral movement means fixed to a shaft integral with a feed roller movable in the axial direction and having a peripheral edge partly bent in the axial direction, and the disc cam. 2. The synthetic resin roll-shaped continuous bag feeding device according to claim 1, comprising a pair of gripping rollers that are axially attached to the substrate so that the peripheral edges are sandwiched from both sides. 5. The delivery device for a synthetic resin roll-shaped continuous bag according to claim 1, wherein the lateral movement means is an electromagnetic solenoid provided on the substrate.