JP5070008B2 - Sealing device - Google Patents

Description

  In order to prevent inadvertent opening of a container with a lid containing contents such as food, the present invention covers the contents in the container body, covers the lid, and adheres a label or the like between the container body and the lid. The present invention relates to a sealing device for sealing with a paper piece with an agent.

As a sealing device for sticking and sealing a label or tape so as to span the outer surface of the lid and the outer surface of the container main body while continuously transporting the container with the lid with a conveyor, for example, those described in the following documents There is.
Japanese Patent Application Laid-Open No. 11-292028

  A conventional sealing device includes a frame arranged around a conveyor, a lifting actuator and a lifting member attached to the frame, a horizontal moving actuator for horizontally moving the lifting member, an arm member and an adhesive tape presser extending from the lifting member. The adhesive tape was stuck so that it had a member and it might span over the upper surface and side surface of a container with a lid | cover.

  This sealing device was configured to stick the adhesive tape to the container while feeding the adhesive tape from the coil, and then cut the tape at the cutting part. It was not suitable.

  As a conventional device that attaches a label to the upper surface of a container with a lid that is transported on a conveyor and seals using this label, the label is attached to the upstream side of the conveyor with a label sticking device so that its tip protrudes from the container. Then, the container is stopped by the stopper provided on the downstream side of the conveyor, and at the same time, the press roller is lowered from the upper side on the upstream side of the container to temporarily attach the rear end of the label on the conveyor, and the temporarily attached label is in the stopped state. Some of them were fed upstream with the conveyor so as to be close to the container with the lid, and the label was attached to the side and bottom of the container, and then the stoppered container was released to transport the sealed container with the conveyor. .

  However, the conventional sealing device that temporarily attaches the label on the conveyor, then transfers it to the container side and attaches it, does not have a mechanism for pressing the label along the container. In many cases, the sealing device does not function sufficiently.

  The present invention has been made to solve the above-mentioned problems of the sealing device, and is suitable for attaching and sealing a sticky paper piece of a predetermined shape such as a label, and also on the side surface and lower surface of the container. An object of the present invention is to provide a sealing device in which a piece of paper adheres.

  In order to solve the above-mentioned problem, the sealing device of the present invention is located on the downstream side of a paper piece attachment device for attaching a paper piece with an adhesive such as a label to the upper surface of a container with a lid conveyed on a conveyor. In a sealing device that seals the container with a lid by sticking the piece of paper extending outward to a container side surface and a container lower surface, a frame disposed around the conveyor, and the frame synchronized with a conveyor conveyance speed. And an overall moving part that can move horizontally, a stopper lifting and lowering part that is disposed below the frame and opened at the conveyor, and a top and bottom part that can be projected and retracted, and can be horizontally moved above the frame. A horizontal reciprocating engine, a lifting engine that can move up and down an arm that is attached to the plate and hangs down in the direction of the conveyor, and an upper surface, a side surface, and a lower surface of the lidded container that are attached to the tip of the arm. Further comprising a pressing roller capable of rolling Te is characterized in.

  The paper piece attachment device affixes the leading end of the paper piece so as to protrude from the lid portion on the conveyor upstream side of the lidded container. The conveyor disposed on the downstream side of the paper piece mounting device is provided with an opening at the center, and a stopper projects from the opening to support the downstream side of the container. The stopper is provided above the stopper elevating part, and rises when the container is conveyed, and descends when the sticking of the paper piece is completed.

  The entire moving unit includes a rod cylinder attached to the frame and reciprocating horizontally, and moves the frame in synchronization with the conveyor when the container is captured by the stopper. After releasing the catch of the container, the rod is returned to the initial position and the next container is waited for.

  The presser roller can move its position two-dimensionally by the operation of the horizontal reciprocating engine and the lifting engine. When rolling along the upper surface of the container, the presser roller is pressed against the lid. In the case of rolling along the side surface, the paper piece protruding from the lid is pushed forward while being bent downward.

  At this time, since the lidded container is captured by the stopper, the paper piece can be pressed and adhered to the side surface. Further, the remaining paper piece is pressed and adhered by a pressing roller that rolls along the lower surface of the container. During the operation period of the presser roller, the entire moving unit moves in synchronization with the conveyor.

  After the pressing operation to the end of the paper piece is completed, the entire moving unit is stopped simultaneously with the lowering of the stopper, and the conveyance of the lidded container is entrusted to the rotation of the conveyor.

  The sealing device according to the present invention has a pressing roller that can move its position two-dimensionally by the operation of the horizontal reciprocating engine and the lifting engine, along the upper surface, the side surface, and the lower surface of the lidded container captured by the stopper. Since the pressure-sensitive adhesive paper piece is pressed, the lidded container can be reliably sealed. Moreover, since the whole moving part which can move horizontally in synchronism with the conveying speed of the conveyor is provided, the conveyance of the product becomes continuous and the efficiency of the sealing work increases.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view of the label sticking device and the sealing device. The sealing device 1 is disposed on the downstream side of the label sticking device 4 for attaching a label which is a paper piece with an adhesive to the upper surface of the lidded container 3 conveyed on the conveyor 2.

  The container 3 with a lid is made of a synthetic resin such as polyethylene terephthalate (PET) or a paper material into which a cooked product or the like is placed. The lid and one side of the container body are connected to each other so as to be bent. Using the label sticking device 4 and the sealing device 1 on the side, the label is stuck and sealed so as to span the outer surface of the lid and the outer surface of the container body.

  The label sticking device 4 is a device that performs labeling while continuously transporting the lidded container 3 on the conveyor 2, and a label supply unit 6 that rotatably holds the supply reel 5 and a label that is wound around the supply reel 5. A transport unit 8 that transports while holding the tape 7, a label peeling unit 9 that turns back the transport direction of the label tape 7, and a winding unit 10 that winds the label tape 7 sent out from the transport unit 8 are provided.

  The label tape 7 is for temporarily attaching a plurality of labels 7b to the belt-like mount 7a at a predetermined interval. The label tape 7 is attached to the lidded container 3 at the tip of the label peeling portion 9, and the label tape 7b Peel off.

  Details of the label sticking apparatus will be described with reference to FIG. FIG. 2 is a front view of the label sticking apparatus. The label supply unit 6 includes a pair of placement rollers 6a and 6b on which the supply reel 5 is rotatably mounted. One of the placement rollers 6a receives the rotational driving force of the servo motor 6c and comes into contact therewith. A rotational force is applied to the outer periphery of the supply reel 5 in the transfer direction of the label tape 7.

  The interval between the mounting rollers 6a and 6b is such that the supply reel 5 is always stably in a state where the label tape 7 is fully wound (state shown by a solid line in FIG. 2) or almost idle (state shown by a two-dot chain line in FIG. 2). One mounting roller 6a that imparts a rotational driving force rotates in synchronization with the transfer speed of the label tape 7. That is, even if the radius of the supply reel 5 changes with respect to a constant transfer speed of the label tape 7, it can be handled at a constant motor rotation speed, so that the control becomes simple.

  The label tape 7 fed out from the supply reel 5 is sent to the transfer unit 8 and the label peeling unit 9 via the supply roller 11, the tension roller 12, and the guide roller 13. The tension roller 12 can be moved up and down along the guide 12a. An upper limit position and a lower limit position are set for the guide 12a. When the tension roller 12 reaches the upper limit position, the label in the label supply unit 6 is controlled via a control unit (not shown). The transfer speed of the tape 7 is increased to loosen excess tension, and when the lower limit position is reached, the rotation speed of the mounting roller 6a is decreased so that a predetermined range of tension is applied to the label tape 7.

  The transfer unit 8 includes upper, middle, and lower three-stage transfer rollers 8 a, 8 b, and 8 c that are disposed in the base direction of the label peeling unit 9. These transfer rollers 8a, 8b, and 8c are attached to a substantially T-shaped swing plate 9a constituting the label peeling portion 9, and rotate by receiving the rotational driving force of the servo motors 8d, 8e, and 8f, respectively.

  The upper transfer roller 8a and the servo motor 8d connected to the upper transfer roller 8a are supported by a motor hanger 8g rotatably attached to the swing plate 9a, and the middle transfer roller 8b and the intermediate transfer roller 8b are operated by operating a lever 8i protruding from the motor hanger 8g. Is made. Similarly, the lower transfer roller 8c and the servo motor 8f are supported by a motor hanger 8h and are brought into and out of contact with the intermediate transfer roller 8b by operation of the lever 8j.

  Both ends of the top of the swing plate 9a are coupled to the pins 9b and 9c. The swing plate 9a swings in response to the reciprocation of the link 9e connected to the cam 9d.

  A label peeling plate 9f is attached to the front end portion of the swing plate 9a, and the front end portion extends toward the container 3 with a lid conveyed on the conveyor 2. The label tape 7 is turned at the front end of the release plate 9f, whereby the label 7b peeled off from the belt-like mount 7a is fed forward of the release plate 9f.

  Also, a bracket 9g protrudes from the upper end of the swing plate 9a and a label sensor 9h is mounted. An arm 9j that has a presser roller 9i is attached to the bracket 9g.

  On the other hand, a sensor 2 a and an air cylinder 2 b that is actuated by a signal thereof are disposed on the conveyor 2 side, and a stopper 2 c projects from the upper surface of the conveyor 2.

  When the sensor 2a detects the lidded container 3 conveyed by the conveyor 2, a signal is sent from a control unit (not shown) to the air cylinder 2b, and the stopper 2c protrudes on the conveyor 2 to capture the lidded container 3. At this time, the label sensor 9h also detects the tip of the label 7b and grasps the position of the label 7b.

  Driving of the servo motors 8d, 8e, 8f and the cam 9d of the transfer unit 8 is controlled by a control unit (not shown), and the leading end of the label 7b fed out from the label peeling plate 9f in accordance with the positions of the lidded container 3 and the label 7b is It is rotationally driven at the same timing so as to be attached to a predetermined position on the upper surface of the lidded container 3, and the head is swung as shown by the two-dot chain line in FIG.

  Thereafter, the stopper 2c is lowered to send the lidded container 3 to the front sealing device 1 side, and the label 7b is adhered by a presser roller 9i provided in front. At this time, the sticking position of the label tip is set so that the label 7b extends more than half the length outward from the container 3 with the lid.

  On the other hand, the strip-shaped mount 7a from which the label 7b has been peeled passes through the lower surface side of the label peeling plate 9f, is sandwiched between the middle and lower transfer rollers 8b, 8c, and is sent to the winding unit 10 via the guide roller 14. Similarly to the label supply unit 6, the winding unit 10 has a pair of mounting rollers 16a and 16b on which the winding reel 15 is rotatably mounted, and one of the mounting rollers 16a is a servo motor 16c. Upon receiving the rotational driving force, the rotational force is applied to the outer periphery of the winding reel 15 in contact in the winding direction of the belt-like mount 7a.

  As described above, the upper and middle transfer rollers 8a and 8b in the transfer unit 8 transfer the label tape 7 to be clamped toward the front end of the label peeling plate 9f, and the middle and lower transfer rollers 8b and 8c transfer the band-shaped mount 7a to be clamped. Transfer to the winding unit 10 direction. Each of the transfer rollers 8a, 8b, and 8c is rotated by receiving the rotational driving force of the servo motors 8d, 8e, and 8f, and the rotational speed of the upper roller 8a is used to maintain the tension of the label tape 7 on the label peeling plate 9f. Is set slower than the middle roller 8b, and the rotational speed of the lower roller 8c is set faster than the middle roller 8b.

  The upper and middle transfer rollers 8 a and 8 b are rollers for pulling out the label tape 7 from the supply reel 5, and the middle and lower transfer rollers 8 b and 8 c are rollers for applying tension to the label tape 7. The upper, middle, and lower three-stage transfer rollers 8a, 8b, and 8c are always clamped while the label tape 7 is transferred, and before and after that, that is, between the label supply unit 6 and the upper and middle transfer rollers 8a and 8b. Alternatively, even if the label tape 7 is cut from the middle and lower transfer rollers 8b and 8c to the winding unit 10, the tension is maintained.

  The lidded container 3 to which the label 7b is attached in this way is sent out to the sealing device 1 side by the conveyor 2. The sealing device 1 includes a frame 17 disposed around the conveyor 2, a rod cylinder 18 connected to the lower surface of the lower plate 17a of the frame 17, an air cylinder 19 disposed on the upper surface of the lower plate 17a, and a side plate of the frame 17. A mechanical cylinder 20 for horizontal movement disposed horizontally above 17b, a mechanical cylinder 21 for raising and lowering connected perpendicularly to the conveyor side of the cylinder 20, an arm 22 hanging down in the direction of the conveyor, and an arm tip. A presser roller 23 and a roller 24 that is horizontally mounted on the side plate 17b are provided.

  Details of the sealing device will be described with reference to FIGS. FIG. 3 is a front view of the sealing device, and FIG. 4 is a cross-sectional view showing the IV-IV cross section of FIG. The frame 17 is provided so as to surround the conveyor 2 and reciprocates in the horizontal direction by a rod cylinder 18 fixed to a conveyor base (not shown).

  As shown in FIG. 4, the conveyor 2 is a two-row endless belt type arranged in parallel, and conveys the lidded container 3 over the opening 2 d to be opened. The opening 2d is provided with a stopper 25 that moves up and down by the air cylinder 19, and receives a signal from a control unit (not shown) so that the tip thereof protrudes and protrudes from the upper surface of the conveyor.

  The rollers 24 that are horizontally mounted on the side plates 17b and 17b are arranged so as to be in rolling contact with the upper surface of the lidded container 3. The horizontal moving mechanical cylinder 20 has a plate member 20a attached to the front surface, and reciprocates in the horizontal direction a lifting mechanical cylinder 21 fixed to the plate member 20a. The raising / lowering mechanical cylinder 21 moves the arm 22 up and down and rolls the pressing roller 23 along the upper surface, the side surface, and the lower surface of the lidded container 3.

  Next, the operation of the sealing device will be described with reference to FIGS. FIG. 5 to FIG. 9 are explanatory diagrams of the usage status of the sealing device, respectively. When the lidded container 3 with the label 7b stuck in a shape extending outward by the label sticking device 4 enters the sealing device 1, the air cylinder 19 protrudes the stopper 25 on the upper surface of the conveyor 2. At this time, the rod cylinder 18 is stopped with the rod 18a extended to the upstream side of the conveyor 2, and the frame 17 is in a stopped state (FIG. 5).

  Thereafter, the lidded container 3 conveyed by the conveyor 2 comes into contact with the stopper 25. At the same time, the rod cylinder 18 starts to retract the rod 18a, and moves the frame 17 horizontally in synchronization with the conveying speed of the conveyor 2. On the other hand, the lidded container 3 that has entered the sealing device 1 rolls the presser roller 23 that is slidably brought into sliding contact with the upper surface of the lid and is lowered to a predetermined height until it comes into contact with the stopper 25 and is pasted. The label 7b is adhered (FIG. 6).

  At the same time as the container 3 with the lid is captured by the stopper 25, the horizontal moving mechanical cylinder 20 is operated to retract the presser roller 23, and the lifting mechanical cylinder 21 is also lowered, thereby pressing the presser roller 23. Is moved two-dimensionally along the outer periphery of the container.

  When the pressing roller 23 rolls along the side surfaces of the lid and the container main body, the label 7b is bent downward. At this time, since the front surface of the lidded container 3 is supported by the stopper 25, the label 7b can be pressed and adhered to the side surface. When the presser roller 23 is positioned to the end, the horizontal movement mechanical cylinder 20 stops moving backward and starts moving forward (FIG. 7).

  The presser roller 23 that has entered the lower side of the container main body stops descending and rolls and presses the label 7b along the lower surface of the container by the forward movement. However, since the lid is pressed by the roller 24, the label 7b is brought into close contact. be able to. During the operation period of the presser roller 23, the rod cylinder 18 operates in synchronization with the conveyor 2 (FIG. 8).

  After the pressing operation of the pressing roller 23 is completed to the end of the label 7b, the forward movement is stopped, and the operation of the rod cylinder 18 is stopped simultaneously with the lowering of the stopper 25. Therefore, the conveyance of the lidded container 3 is left to the rotation of the conveyor 2 (FIG. 9).

  After releasing the catch of the container 3 with the lid, the rod cylinder 18 returns the rod 18a to the initial position, waits for the next container to be carried in, and repeats the above operation.

It is a front arrangement drawing of a label sticking device and a sealing device. It is a front view of a label sticking apparatus. It is a front view of a sealing device. It is sectional drawing which shows the IV-IV cross section of FIG. It is explanatory drawing of the use condition of a sealing apparatus. It is explanatory drawing of the use condition of a sealing apparatus. It is explanatory drawing of the use condition of a sealing apparatus. It is explanatory drawing of the use condition of a sealing apparatus. It is explanatory drawing of the use condition of a sealing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sealing device 2 Conveyor 3 Container with lid 4 Label sticking device 17 Frame 18 Rod cylinder 19 Air cylinder 20 Horizontal moving mechanical cylinder 21 Lifting mechanical cylinder 23 Presser roller 25 Stopper

Claims (1)

On the downstream side of the paper piece attachment device for attaching a paper piece with an adhesive such as a label to the upper surface of the lidded container conveyed on the conveyor, the paper piece extending outward from the lidded container is placed on the container side surface and the container lower surface. In the sealing device that seals the container with lid by attaching to the frame, a frame arranged around the conveyor, an overall moving unit that can move the frame horizontally in synchronization with the conveying speed of the conveyor, and a lower part of the frame A stopper lifting and lowering portion whose tip can be projected and retracted from an opening provided in the conveyor, a horizontal reciprocating engine disposed above the frame and capable of horizontally moving the plate material, and attached to the plate material in the direction of the conveyor A lifting engine capable of vertically moving a hanging arm, and a presser roller attached to the tip of the arm and capable of rolling along the upper surface, the side surface, and the lower surface of the lidded container. Sealing apparatus.

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