JP5806347B2 - Vacuum suction stroke adjustment mechanism - Google Patents

Description

  The present invention relates to a vacuum sucker of a packaging device for filling various foods such as fish and meat, soft items such as confectionery, especially salmon, etc., into a rotary filling device from a bag mouth of a vertically sandwiched bag. The present invention relates to a stroke adjustment mechanism.

  Patent Document 1 is a rotary type bag filling device, which supports a plurality of sets of clamp arms, one set of two around the disk, and clamps installed at the tip of each clamp arm sandwich the both side edges of the bag. Then, it is suspended and transported intermittently one pitch at a time, and the package is filled while the packing bag is stopped in the filling section in the rotating track.

  The article to be packaged is mounted on a conveyor and sent out toward a primary buffer mechanism. This primary buffer mechanism is composed of a groove-shaped guide base that is swingably supported at the end end of the transport conveyor, and a shut plate that closes the end end of the guide base, and receives an impact received by the article to be packaged. It is the structure which buffers.

  As described above, when the intermittently moving wrapping bag reaches the filling section and stops, the cylindrical hopper descends into the wrapping bag supported by the clamp arm, and the article to be packaged falls through the hopper into the wrapping bag.

JP 2009-18820 A

  However, the vacuum sucker of the bagging device of the conventional packaging machine has a wide bag opening so that the vacuum sucker comes into contact with the packing bag when returning to the original position to suck the subsequent packing bag. As a result, there is a problem that the sachet may come off.

  The present invention has been made to solve the above problems, and after the vacuum sucker is retracted to a safe position in the product insertion section, the reciprocating arm can be returned to the position of the bag opening section. An object of the present invention is to provide a bagging device for a packaging device.

The stroke adjusting mechanism of the vacuum suction cup of the present invention supports two clamp arms around the disk, and the clamps installed at the tip of each clamp arm are suspended by holding both side edges of the wrapping bag. A stroke adjusting mechanism of a vacuum sucker in a packaging device in which a bag mouth of a wrapping bag is widened by a pair of vacuum suckers and a product is filled in a rotating orbit, and a pair of parallel slides A vacuum sucker is provided at the tip of the arm, and the vacuum sucker sucks the wrapping bag in the bag opening opening section to reciprocate the reciprocating arm that reciprocates on the rotating track, and fills the packaged object. state and, when the vacuum sucker is returned from the product introductions section bag mouth opening section, provided with a stroke adjusting mechanism for creating a state to be saved apart from the wrapper, wherein the stroke adjustment mechanism And a stopper mounted on the reciprocating arm and an adjustment mechanism, and the protruding rod of the adjustment mechanism and the stopper come into contact with each other to regulate the sliding of the pair of arms and to be separated by a spring provided on the arms. The vacuum sucker is stopped, the bag mouth is opened and the package is filled, and the protruding rod of the adjustment mechanism is retracted inward, and the pair of arms are moved inward and outward by the corresponding amount. And the vacuum sucker is separated, and the vacuum sucker is created in a two-stage state in which the vacuum sucker is retracted to a position away from the wrapping bag .

  Since the present invention retracts the vacuum sucker to a safe position in the product loading section, when the vacuum sucker is returned to the bag opening section, there is no possibility that the vacuum sucker will come into contact with the packaging bag and the packaging bag will come off.

  FIG. 1 is a partially omitted plan view of the bag packing device of the rotary type packaging apparatus of the present invention, a front view seen through the inside of the bag packing device of FIG. 2, and the use state of the bag packing device of FIG. The bagging device of the packaging device of the present invention will be described below using a perspective view and a side view showing the state of filling of the packaged object of FIG.

  In FIG. 1, a loading mechanism 2 is arranged in the product loading section (C) of the bagging device 1 of the packaging device. The input mechanism 2 of the present invention is not limited to such a rotary type packaging apparatus, but is a linear package that can be packed by opening the bag mouth 3A of the sachet 3 upward and holding it vertically. It is possible to correspond to a device.

  First, an outline of the bag filling device 1 of the rotary type packaging device of FIG. 1 will be described. The bagging device 1 can perform some packaging work every 45 degrees of the disk 2A. For example, in the section (A), the bagging device 1 is attached to the clamp 6 via a suction device that rotates from a bag supply device (not shown). Delivery of the wrapping bag 3 is performed (bag removal section). In FIG. 1, the configuration of the entire apparatus is omitted except for the position where the packaged material 5 is filled in the packaging bag 3.

  In the sections (B) to (C), the front and rear surfaces of the sachet 3 are spread by the vacuum suckers 4 and 4 to open the bag mouth 3A (bag mouth opening section). Furthermore, in the section (C), the package 5 is filled into the packaging bag 3 by using the loading mechanism 2 (product loading section). In the section (D), the bag 3 is pressed to expel the air in the bag (deaeration section). In the section (E), the bag mouth 3A is closed and sealed with a sealer (seal section). In section (F), change the clamp 6 to the clamp of the binding device. In the section (G), the bag mouth 3A is bound by a binding device (not shown). In the section (H), it is carried out from the bagging device 1 of the rotary type packaging device (unloading section). In addition, these sections are examples and differ with packaging apparatuses.

  Next, the charging mechanism 2 will be described. The input mechanism 2 according to the present invention includes a tray 12 for inputting an object to be packaged 5 into the wrapping bag 3 and a shielding plate 13 for shielding the object to be packaged 5 from jumping out of the wrapping bag 3. Note that the shielding plate 13 may also serve to expand the bag mouth 3A instead of a spatula when the article 5 is loaded as described later.

  As shown in FIG. 3, the tray 12 is formed in a channel shape with side plates 12A standing upright at both sides, and the front end portion and the rear end portion are open without a plate. A trapezoidal side guide plate 12B is attached to the tip of the side plate 12A via a connecting piece 12C. The side guide plate 12B is attached to guide the package 5 so that the package 5 does not spill from the left and right sides when the package 5 is put into the package. Further, a rectangular bottom guide plate 12E bent downward from the bottom plate extends from the bottom plate 12D at the tip of the bottom plate 12D. The bottom guide plate 12E is also provided to guide the article 5 and open the bag mouth 3A when the article 5 is put into the bag 3.

  A shaft 14 is attached in the width direction of the bottom surface of the bottom plate 12D of the tray 12, and both ends of the shaft 14 are supported by bearings 15 provided on an inverted L-shaped substrate 15A. The cylinder 16 shown in FIG. Due to the expansion and contraction, the shaft 14 rotates through the crank 17 and the tray 12 swings, that is, the front and rear ends of the tray 12 alternately move up and down around the shaft 14 like a seesaw. Due to this swinging motion, the article 5 to be packaged placed on the tray 12 falls into the packaging bag 3.

  The shielding plate 13 is a rectangular plate body, and its lower end is slightly bent toward the tray 12 side and arranged vertically, and is connected to the cylinder 19 via an inverted L-shaped connecting rod 18, The shielding plate 13 moves up and down by the expansion and contraction of 19. Furthermore, the shielding plate 13 can be rotated about the axis of the cylinder 19 in the direction of the arrow 21 in FIG.

  Next, the positional relationship between the tray 12 and the shielding plate 13 will be described. The tray 12 is arranged at the upper outer periphery of the bag 3 located in the product loading section C of the bagging device 1, and the tray 12 is bent forward. When this is done, the tip end side is arranged so as to face toward the bag mouth 3A.

  A shielding plate 13 is disposed at a position facing the tray 12. When the tray 12 is in a horizontal state, the extension of the front end is located around the center of the shielding plate 13, and a gap is formed between the front end of the forward-bent tray 12 and the shielding plate 13 so that an article to be packaged falls. Yes. The shielding plate 13 is normally arranged vertically on the inside of the bag in plan view at the top of the bag 3, and in the raised state, its lower end is separated from the upper edge of the bag 3, but is lowered. In this state, it enters into the sachet 3. When the article 5 to be packaged is put into the packaging bag 3, the front end portions (side guide plates 12B and bottom guide plates 12E) of the tray 12 rotate so as to bend forward. The shielding plate 13 is moved up and down by the action of the cylinder 19 and is configured to rotate inward (in a direction approaching the disk 2A) by a cylinder (not shown) when the shielding plate 13 enters the bag 3.

  Next, the operation of the bagging apparatus of the present invention will be described with reference to FIG. The article (for example, bowl) 5 conveyed by the conveyor 20 is moved to the tray 12 side using an operator's manual operation or a device such as a pusher (not shown).

  In the product loading section (C) of FIG. 1, the clamp 6 of the bagging device 1 sandwiches both sides slightly lower than the upper end of the bag 3, and is adsorbed from the front and rear sides of the bag 3 by a pair of vacuum suckers 4 and 4. The bag mouth 3A is opened in the front-rear direction. As shown in FIG. 4, the tray 12 and the shielding plate 13 start to move simultaneously. As shown in FIG. 4, the cylinder 16 is extended and the shaft 14 is rotated by the crank 17, and the tray 12 is bent forward, and the tip side enters the wrapping bag 3. The cylinder 19 is actuated and the shielding plate 13 is also lowered at the same time, so that the article to be packaged 5 is guided so as not to jump out of the packaging bag 3. Further, the shielding plate 13 is rotated inward by a cylinder (not shown), the bag mouth 3A is expanded in cooperation with the bottom guide plate 12E, and the articles to be packaged 5 are loaded from the tray 12. Since the tray 12 and the shielding plate 13 open the bag mouth 3A, the vacuum sucker 4 can be returned to the original position in order to suck the next bag 3.

Next, the stroke adjustment mechanism 35 of the vacuum suction cup 4 will be described.
As described above, when the vacuum sucker 4 returns to the original position to suck the subsequent bag 3, the vacuum sucker 4 stops sucking the bag 3 in the product loading section (C) and reciprocates. The arm 22 may be returned to the bag opening section (B). However, in the present invention, the bottom guide plate 12E and the shielding plate 13 of the tray 12 enter the bag 3 and separate to expand the bag port 3A. Therefore, there is a problem that the vacuum sucker 4 may come into contact with the packaging bag 3 and the packaging bag 3 may come off. For this reason, after retracting the vacuum suction cup 4 to a safe position in the product loading section (C), it is necessary to return the reciprocating arm 22 to the position of the bag opening section (B).

  However, the stroke adjusting mechanism 35 is not only a packaging device equipped with the tray 12 and the shielding plate 13 as in the present invention, but also the conventional packaging device has the same problem that the vacuum suction cup 4 contacts the packaging bag 3. Therefore, such a stroke adjusting mechanism 35 may be used in a conventional packaging device.

  In the following, the stroke adjusting mechanism 35 of the vacuum suction cup 4 will be described, but before that, the configuration and operation of the vacuum suction cup 4 and the reciprocating rotation arm 22 will be described briefly. Each figure of FIG. 5 is explanatory drawing explaining the action | operation of the reciprocating rotation arm 22. FIG. B-I in FIG. 5 is a plan view showing the vacuum suction cup 4 and the reciprocating rotation arm 22 at the position of the bag opening section (B) in FIG. 1, and moved from the bag removing section (A). The state before the closed bag 3 that has been closed is sucked from the front and rear surfaces by the vacuum sucker 4 to open the bag mouth 3A is shown.

  The reciprocating arm 22 is attached to the tip of the central shaft 25 shown in FIG. 2, and the drive motor 23 rotates the arm 22 through the central shaft 25. The reciprocating arm 22 includes a rectangular support portion 36 at a tip portion 26 A of a substantially L-shaped bracket 26 attached to the tip of the central shaft 25, and the support portion 36 includes an inner arm 28 and an outer arm 29. Is slidably supported. The inner arm 28 and the outer arm 29 are connected by a rotating piece 30 pivotally supported by the support portion 36, and both arms 28 and 29 slide in opposite directions by the rotating piece 30. A vacuum intake passage 27 (see FIG. 3) is formed in the inner arm 28 and the outer arm 29, and the inner peripheral side vacuum sucker 4 is provided at the tip of the inner arm 28, and the outer arm 29 is provided on the outer side. A vacuum sucker 4 is attached to adsorb the bag 3.

  As shown in FIG. 2, a spring 31 is stretched between the support portion 36 and the outer arm 29. The outer arm 29 is biased outward and the inner arm is biased inward. The vacuum suction cups 4 and 4 are biased in a direction away from each other. Therefore, the inside and outside vacuum suction cups 4 are usually separated between the bag opening section (B) and the product loading section (C). A pusher 32 is provided at the position of the bag opening section (B) in order to bring the inner and outer vacuum suction cups 4 and 4 that are separated from each other closer to each other.

  The pusher 32 rotates a rotating shaft 33 by the action of an air cylinder, and an L-shaped projecting piece 37 provided on the upper surface of the outer arm 29 is moved by a cam 34 provided at one end of the rotating shaft 33. The inner arm 28 is pushed inward while resisting the urging force of the spring 31, the inner arm 28 is slid outward through the rotating piece 30, and the inner and outer vacuum suction cups are moved. 4 and 4 are brought close to each other, and the closed bag 3 is adsorbed as shown in FIG.

  When the reciprocating pivot arm 22 moves from the bag opening section (B) of FIG. 1 to the product insertion section (C) together with the wrapping bag 3 as the clamp 6 rotates, the pusher 32 releases the pressure. The vacuum suction cups 4 and 4 on the inner peripheral side and the outer peripheral side that have been approached by the pusher 32 are restored to the separated state. However, since the suction of the vacuum suction cups 4 and 4 is continued, the wrapping bag 3 moves to the product loading section (C) with the bag mouth 3A opened as shown in B-II of FIG. It is due to the action of the stroke adjusting mechanism 35 that the vacuum suckers 4 and 4 stop in the state where the bag mouth 3A is opened. The stroke adjustment mechanism 35 includes a stopper 35A attached to the rear end of the outer arm and an adjustment mechanism 35B attached to the support portion 36. The rod 35b of the adjustment mechanism 35B contacts the stopper 35A and In order to restrict the sliding of the inner arm 28, the movement of the vacuum suction cups 4, 4 which are about to be separated by the spring 31 is stopped.

  In the product loading section (C), as described above, the tray 12 is bent forward and simultaneously the shielding plate 13 is lowered, and the tray bottom guide plate 12E pushes the bag mouth 3A outward by the forward bending movement of the tray 12, The shielding plate 13 moves away from the inside by the action of the cylinder and pushes the bag mouth 3A inward to widen the bag mouth 3A. As described above, the package 5 is put into the package 3.

  When the reciprocating arm 22 returns from the product loading section (C) to the bag opening section (B), the vacuum suction cups 4 and 4 are removed from the bag 3 as shown in FIG. 5 (B-III). Retreat to a remote location. At that time, the suction of the bag 3 by the vacuum suckers 4 and 4 is stopped.

  The reason why the vacuum suction cups 4 and 4 are retracted to the position away from the bag 3 as shown in FIG. 5 (B-III) is that the rod 35b of the adjusting mechanism 35B is retracted inward and shortened, and the spring 31 is used by that amount. This is because the inner arm 28 and the outer arm 29 slide inward and outward to separate the vacuum suction cups 4 and 4.

  The stroke adjusting mechanism 35 uses an air cylinder to adjust the protruding amount of the rod 35b, so that the bag mouth 3A is opened as shown in B-II of FIG. 5 and a vacuum as shown in (B-III). It is possible to create a two-stage state in which the suction cups 4 and 4 are separated from the wrapping bag 3 and retracted. The adjusting mechanism 35b is not limited to the one using an air cylinder, and the protruding amount of the rod 35b may be controlled by, for example, a servo motor, a solenoid, or a cam.

  The bag filling apparatus of the present invention does not require a conventional bag opening with a spatula and has a simple structure. Furthermore, since the spatula lifting device is no longer required, the charging time of the packaged item can be lengthened and the charging height is shortened. By shortening the charging height, even if it is easy to deform like a bowl, the deformation can be suppressed as much as possible.

  The present invention is not limited to a rotary type packaging apparatus, and is useful for a bag filling apparatus when an article is loaded from a bag mouth of a vertically oriented bag.

Partially omitted plan view of a rotary type packaging apparatus provided with the bag filling apparatus of the present invention Front view of the inside of the bag packing device of the rotary type packaging device Usage perspective view of bagging device Side view showing the state of filling the package Explanatory drawing explaining the operation of the reciprocating arm

DESCRIPTION OF SYMBOLS 1 Bag packing apparatus 2 Packing mechanism 3 Packing bag 3A Bag opening 4 Vacuum suction cup 5 Packaged object 6 Clamp 20 Conveyor 22 Reciprocating rotation arm 23 Drive motor 24 Arm 25 Center shaft 26 Bracket 27 Intake path 28 for vacuum Bracket 29 Outer bracket 30 Rotating piece 31 Spring 32 Pusher 33 Rotating shaft 34 Cam 35 Stroke adjusting mechanism 35A Stopper 35B Adjusting mechanism 35b Rod

Claims (2)

A pair of clamp arms is supported around the disk, and the clamps installed at the tip of each clamp arm are suspended by holding both side edges of the wrapping bag. A stroke adjustment mechanism of a vacuum suction cup in a packaging device in which a product to be packed is filled in a product input section in a rotating track,
A vacuum sucker is provided at the tip of a pair of parallel sliding arms, and the vacuum sucker sucks the packing bag in the bag mouth opening section and expands the bag mouth to the reciprocating rotation arm that reciprocates on the rotating track. A stroke adjustment mechanism that creates a state in which the package is filled and a state in which the vacuum sucker returns from the product input section to the bag opening section and is retracted away from the packaging bag,
The stroke adjusting mechanism is composed of a stopper and an adjusting mechanism attached to the reciprocating arm, and the rod protruding from the adjusting mechanism and the stopper are brought into contact with each other to regulate the sliding of the pair of arms. Stop the movement of the vacuum sucker trying to separate by the spring and open the bag mouth to fill the package
The protruding rod of the adjusting mechanism is retracted inward, and the pair of arms are slid inward and outward by the amount of the spring, the vacuum sucker is separated, and the vacuum sucker is retracted to a position away from the wrapping bag. Vacuum suction stroke adjustment mechanism that creates a two-stage condition . The stroke adjustment mechanism uses an air cylinder and adjusts the protrusion of the rod of the air cylinder to create a two-stage state in which the bag mouth is open and the vacuum sucker is retracted away from the wrapping bag. The stroke adjusting mechanism of the vacuum suction cup according to claim 1, wherein

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