JP5000362B2 - Bag making and packaging machine - Google Patents

Description

  The present invention relates to a bag making and packaging machine that inputs and packages an article while forming a packaging bag from a belt-shaped packaging material, and belongs to the technical field of packaging machines.

  For example, a bag making and packaging machine used to produce a bag-filled product by enclosing an article such as potato chips in a packaging bag, and a belt-like packaging material fed from a roll is bent into a tube shape by a former. At the same time, the bent packaging material is sealed in the longitudinal direction and the lateral direction to form a packaging bag, and the article is loaded and packaged.

  The former is a structure in which a shoulder portion that is folded so as to be overlapped on both sides of a belt-like packaging material and bent into a tube shape and a chute portion that feeds an article into the tubular packaging material that is sealed at the lower end portion are integrated. However, since the size of the shoulder portion, the thickness of the chute portion, and the like must be adapted to the size of the bag to be manufactured, it is necessary to replace the product every time the size of the product is different. In this case, the former has a configuration in which the shoulder portion and the chute portion are integrated as described above, and is heavy, and the replacement work is a difficult task requiring time and labor.

  In order to cope with this problem, Patent Document 1 discloses a support mechanism (support) as a support structure of a former (molding machine) in a bag making and packaging machine, a first portion attached to the former, and a packaging machine body. And a second part fixed to the first part, and the first part is movable with respect to the second part, whereby the former mounted on the first part is packaged. A device that can be moved from a first position to a second position that is easy for an operator to access is disclosed. According to this, when the former is attached / detached, the workability of the attaching / detaching work is expected to be improved by moving the former to the second position where the worker can easily access.

  Here, the support structure of the former described in Patent Document 1 will be described in detail. In the first embodiment shown in FIGS. 1 to 4 of Document 1, the molding machine support 20 has an enclosure (housing). A pair of support beams 22 extending from the body 17, a pair of guides 23 mounted on the beams 22, and a pair of rods 24 slidably supported by the guides 23. The rod 24 forms the aforementioned first portion of the molding machine support 20, and the guide 23 forms the aforementioned second portion of the support 20 (see paragraphs [0030] and [FIG. 2]).

  Since the rod 24 is slidable within the guide 23, the molding machine 14 can be moved from the first position to a second position horizontally spaced (see paragraph [0033]). The molding machine 14 includes a base 28 and a molding machine shoulder member 29, and the base 28 is detachably attached to the tip of the rod 24 (paragraphs [0031] and [0037]). reference).

  In the second embodiment shown in FIGS. 5 and 6, the molding machine support 47 includes a pair of arms 42 extending horizontally from the enclosure 17 and a vertical extending through the arms 42 and the base 28 of the molding machine 14. And a rotation assembly 46 formed by a vertical shaft extending between the arm 42 and the enclosure 17. Among these, the rotation assembly 44 on the molding machine 14 side forms the first part 43 of the molding machine support 47, and the rotation assembly 46 on the enclosure 17 side forms the second part 45 of the support 47. (See paragraph [0042]).

  Furthermore, in the third embodiment shown in FIG. 7, the molding machine support 50 includes a pair of arms 52 that are tapered to the rotating assembly 53, and the rotating assembly 53 has a vertical axis. The rotation of the molding machine 14 around 54 is realized (see paragraph [0047]). In this embodiment, the first and second parts constituting the molding machine support 50 are not necessarily clear. However, in contrast to the second embodiment having a similar structure, the rotating assembly 53 is the second one. The arm 52 or its end on the molding machine 14 side is considered to correspond to the first part.

  In any of the embodiments, the second portion is fixed to the molding machine body (exposure), and the molding machine can be attached to and detached from the first portion movable with respect to the second portion. Thus, after the molding machine is moved from the first position to the second position, it can be removed from or attached to the support at the second position. Improvement is expected.

JP 2005-41576 A

  However, in the former support structure disclosed in Patent Document 1, the first part constituting the support is drawn forward in the horizontal plane with respect to the second part or rotated sideways. Therefore, the movement of the former mounted on the first part from the first position to the second position is also limited to the movement on the horizontal plane, which is not always satisfactory in terms of improving workability of the attaching / detaching work. It wasn't possible.

  That is, in this type of bag making and packaging machine, the mounting position of the former is relatively high because a horizontal sealing device or the like for sealing the tubular packaging material in the width direction is disposed below the former. Therefore, in the configuration of Patent Document 1, even if the former is moved to the second position where the operator can easily access the former, the attachment / detachment work of the former is an operation for a heavy object at a high position, and the workability is sufficiently improved. It is hard to say.

  Accordingly, an object of the present invention is to further improve the workability of the former attaching / detaching operation in this type of bag making and packaging machine.

  In order to solve the above problems, the present invention is configured as follows.

  First, the invention described in claim 1 is a support member that detachably supports the former in a bag making and packaging machine that feeds articles while forming a packaging bag by bending a belt-like film into a tube shape by a former. And the support member is configured to movably support the former from a first position where a packaging operation is performed to a second position lower than the first position. It is characterized by that.

  The invention according to claim 2 is the bag making and packaging machine according to claim 1, wherein the support member is supported by a member on the packaging machine body side so as to be slidable back and forth, and the former. And a pivot member connected to the slide member so as to be pivotable forward about the lower portion. The slide member slides forward and the pivot member pivots forward. Thus, the former is configured to move from the first position to the second position.

  With the above configuration, first, according to the first aspect of the present invention, the former can move to the support member from the first position where the packaging operation is performed to the second position lower than the first position. And is attachable to and detachable from the support member. Therefore, it is possible to perform attachment / detachment work at a relatively low position when replacing the former, which is a heavy object, and the like. Workability is improved.

  According to the second aspect of the present invention, the support member is composed of a slide member and a rotation member, and the rotation member that detachably supports the former is front and rear with respect to the member on the molding machine main body side. Since the former is connected to a slide member which can be slidable, the former can be rotated around the lower part at a position where the former is pulled forward from the first position where the packaging operation is performed, or the lower part. It is possible to pull it forward in a posture rotated around the center. Therefore, it is possible to set the second position at which the former is attached / detached to the front side of the molding machine main body and to a relatively low position. Compared with the case where it is performed in the back, it is further improved.

  The best mode of the present invention will be described below.

  As shown in FIG. 1, a bag making and packaging machine 1 according to this embodiment has a main body 2, a support portion 3 for a film roll a is provided above the rear portion of the main body 2, and the front of the main body 2. A former unit 10 is disposed above the unit, and a vertical seal device 4 is disposed in front of the lower portion of the former unit 10 and a horizontal seal device 5 is disposed below.

  The former unit 10 has a shoulder portion 11 and a chute portion 12, and the shoulder portion 11 folds the belt-like film b fed forward from the roll a of the support portion 3 while guiding it downward. Both side edges are overlapped. Then, both side edges of the overlapped film b are welded by the vertical sealing device 4 into a tube shape, and further sealed by the horizontal sealing device 5 in the width direction so as to be formed in the bag body c. It has become.

  2 and 3, the chute portion 12 of the former unit 10 is a bag body in which the upper portion is a substantially conical article input portion 12 a and the lower portion is formed by the shoulder portion 11. The cylindrical article guide portion 12b inserted into the c is guided downward by the guide portion 12b through the opening at the upper end of the input portion 12a and introduced into the bag body c. ing. And by the said horizontal sealing apparatus 5, the upper part of the part into which the articles | goods of the bag body c were thrown in is sealed and cut | disconnected, and the product by which an article | item is sealed by the bag body c comes to be manufactured. Yes.

  Further, the former unit 10 includes a base plate 13 and left and right support columns 14 and 14 erected from the base plate 13, and the shoulder portion 11 and the chute portion 12 are supported by the base plate 13 and the support columns 14 and 14. Including these, the whole is integrated.

  Next, a structure for supporting the former unit 10 on the main body 2 will be described.

  As shown in FIGS. 2 to 4, on the main body 2 side, a substrate 6 is attached between the left and right frames 2 a, 2 a, and a pair of left and right fixing members 7, 7 having a vertical wall shape face the front. Projecting. Rails 7a and 7a extending in the front-rear direction are disposed on the upper surfaces of the fixing members 7 and 7, respectively, and guide blocks 7b and 7b are respectively attached to the lower surfaces of the front end portions.

  On the other hand, as a support member for supporting the former unit 10, a pair of left and right slide members 20, 20 that are supported by the fixing members 7, 7 on the main body 2 side so as to be slidable back and forth, and these slide members 20, 20. A rotating member 30 having a lower end pivotally attached to the front end portion and having an upper portion rotatable forward. The former unit 10 is detachably attached to the rotating member 30.

  The slide members 20, 20 have the same configuration on the left and right, and upper side members 21, 21 extending in the front-rear direction, and front members 22, 22 extending downward by connecting upper ends to the front ends of the upper side members 21, 21. , And guide rods 23, 23 having front end portions connected to the lower portions of the front members 22, 22 and extending rearward, thereby forming a U shape in a side view.

  Then, engaging members 24, 24 are attached to the lower surfaces of the rear end portions of the upper side members 21, 21, and these engaging members 24, 24 slide back and forth on the rails 7a, 7a on the upper surface of the fixing members 7, 7. The guide rods 23, 23 are inserted into through holes 7 b ′, 7 b ′ provided in the guide blocks 7 b, 7 b on the lower surfaces of the front end portions of the fixing members 7, 7. . As a result, the left and right slide members 20, 20 are supported by the left and right fixing members 7, 7 so as to be slidable back and forth between the rear position shown in FIG. 2 and the front position shown in FIG.

  Further, the rotating member 30 has a flat plate-shaped pedestal 31 and a pair of left and right leg members 32, 32 extending downward from both sides of the lower surface of the pedestal 31, and the lower ends of the leg members 32, 32. The part is rotatably connected to the lower part of the front members 22 and 22 of the slide member 20 via fulcrum pins 33 and 33. Thereby, the turning member 30 can be turned forward about the lower end portion from the standing posture shown in FIG. 2 to the forward inclined posture shown in FIG.

  Further, the one leg member 32 of the rotation member 30 is provided with a lock mechanism 34 for holding the rotation member 30 in a standing position at the rear position, and the lock member 34a of the lock mechanism 34 is the main body 2. By engaging the lock pin 34b provided on the one fixing member 7 on the side, the slide members 20 and 20 are held in the rear position, and the rotating member 30 is held in the standing posture. Yes. When the lever 34c of the lock mechanism 34 is operated to release the engagement between the lock member 34a and the lock pin 34b, the slide members 20 and 20 slide forward and the pivot member 30 leans forward. Can be rotated.

  The left and right leg members 32, 32 of the rotating member 30 are provided with extension portions 32a, 32a extending downward from the fulcrum pins 33, 33. The extension portions 32a, 32a and the slide members 20, 20 are provided. Air cylinders 26 and 26 are mounted between brackets 25 and 25 attached to the rear ends of the guide rods 23 and 23, respectively.

  The air cylinders 26, 26 cause the pivoting member 30 to rotate suddenly by the resistance accompanying the contraction of the piston rods 26a, 26a when the pivoting member 30 pivots forward from the standing posture shown in FIG. At the same time, the rotation of the rotating member 30 is restricted at a predetermined forward tilt posture.

  The base member 13 in the former unit 10 is placed on the cradle 31 in the rotating member 30, and the former 31 is fixed to the cradle 31. Left and right holding members 35, 35 are provided, and the holding members 15, 15 provided on both sides of the lower surface of the base plate 13 in the former unit 10 are pressed against the cradle 31 by the holding members 35, 35. As a result, the entire base plate 13 or former unit 10 is fixed on the cradle 31.

  In that case, in order to make it possible to remove the former unit 10 from the cradle 31, one pressing member 35 is configured to be detached from the pressed member 15 by operation of the lever 36.

  Next, the attaching / detaching operation function of the former unit 10 in this embodiment will be described.

  As shown in FIGS. 1 and 2, during normal packaging work, the slide members 20, 20 are in a rearward position relative to the fixing members 7, 7 on the main body 2 side, and the rotating member 30 is in a standing posture. In this state, the lock member 34 a of the lock mechanism 34 is engaged with the lock pin 34 b provided on the one fixing member 7. Therefore, the sliding of the slide members 20 and 20 and the forward rotation of the rotating member 30 are restricted, and the former unit 10 supported by the rotating member 30 is in the rear position where the packaging operation is executed. It is fixed in a standing posture (“first position” in the claims).

  In this state, the packaging operation is performed as follows. That is, the belt-like film b fed out from the roll a supported by the roll support portion 3 is bent into a tube shape by the shoulder portion 11 of the former unit 10, and the bag is formed by the vertical seal device 4 and the horizontal seal device 5. The body c is formed, and the article put into the chute portion 12 is introduced into the bag body c. And the product by which an article | item is sealed by the bag body c is manufactured by the upper part of the article introduction part of this bag body c being sealed and cut | disconnected by the horizontal sealing apparatus 5. FIG.

  On the other hand, when the former unit 10 is removed from the main body 2 of the packaging machine 1 when the former unit 10 is replaced, cleaned, inspected, etc., first, the slide members 20, 20 are operated by operating the lever 34 c of the lock mechanism 34. The fixing at the rear position and the fixing at the standing posture of the rotating member 30 are released.

  Then, for example, when the unit 10 is pulled forward by using the columns 14 and 14 of the former unit 10 as handles, the slide members 20 and 20 slide forward along the rails 7a and 7a of the fixing members 7 and 7, respectively. At the same time, the rotating member 30 and the former unit 10 also move to the front position shown in FIG. In this case, the slide to the front position is restricted by the bracket 25 attached to the rear end of the guide rod 23 in the slide member 20 coming into contact with the guide block 7b attached to the fixing member 7 on the main body 2 side. The

  Further, if the upper portion of the former unit 10 is rotated forward by holding the support columns 14 and 14 of the former unit 10 at this forward position, the rotating member 30 is a fulcrum pin 33 below the leg members 32 and 32. , 33 as a center, the rotating member 30 and the former unit 10 are inclined forward as shown in FIG. 6, and are positioned lower than the position shown in FIG. 5 as a whole. ("Second position" in the claims).

  In addition, when the rotating member 30 is rotated forward, the air cylinders 26, 26 mounted between the leg members 32, 32 of the rotating member 30 and the brackets 25, 25 on the slide member 20, 20 side. As a result, rapid rotation of the rotating member 30 to which the former unit 10 is attached is suppressed, and the rotating member 30 and the former unit 10 are held in a predetermined forward inclined posture.

  Then, in this forward tilted posture, one of the left and right pressing members 35, 35 fixing the former unit 10 on the receiving base 31 of the rotating member 30 is retracted by operating the lever 36, and the pressing member 35, The former unit 10 can be removed from the cradle 31 of the rotating member 30 by releasing the engagement between the member 35 and the pressed members 15, 15 provided on the base plate 13 of the former unit 10.

  In this case, as shown in FIGS. 6 and 7, the slide members 20, 20 slide to the front position, and the pivot member 30 rotates to the forward tilting posture, so that the column 14, At the same time as the position of the upper part provided with 14 is lowered, it projects forward from the front surface 2 b of the main body 2. Accordingly, the work of removing the heavy former unit 10 can be performed at a relatively low position and on the front side of the main body 2 without entering the inside or the back of the main body 2. The same applies to the case where the former unit 10 is attached after replacement, after cleaning, inspection, or the like. This improves the workability of the attaching / detaching work of the former unit 10.

  In the above description, after the former unit 10 is slid to the forward position, the former unit 10 is turned to the forward leaning posture. However, it is also possible to slide the former unit 10 to the forward position after the turning to the forward leaning posture, Further, it is possible to rotate while sliding.

  Next, another embodiment of the present invention will be described.

  In the above-described embodiment, the movement of the former unit 10 from the first position where the packaging operation is performed to the second position lower than the first position where the former unit 10 is attached and detached is the slide members 20, 20. However, in other embodiments, the member that supports the former unit is made to be a member on the main body side corresponding to the fixing member 7 of the above embodiment. Thus, the former unit is configured to move from the first position to a second position lower than the first position by supporting the former unit so as to be movable up and down using a linear guide mechanism such as a linear bearing.

  In yet another embodiment, the member that supports the former unit is moved up and down with respect to the members corresponding to the slide members 20 and 20 in the embodiment that are supported by the fixing member 7 so as to be slidable back and forth. It is configured to move the former unit from the first position to the second position which is lower and lower than the first position by supporting the former unit.

  In these embodiments, as a means for moving the member supporting the former unit up and down, a rack and pinion mechanism is used, the pinion is rotated by a handle or a motor, and a ball screw mechanism is used. A configuration in which the screw shaft is rotated by a handle or a motor, a configuration in which the screw shaft is moved up and down by a cylinder, or the like is employed.

  As described above, according to any of these other embodiments, the second position where the former unit is attached / detached is lower than the first position where the packaging operation is performed. Will be improved.

  As described above, according to the bag making and packaging machine according to the present invention, the workability of the attaching / detaching operation of the former unit is improved, and therefore, it is suitably used in the industrial field using this type of packaging machine. there is a possibility.

1 is an overall side view of a bag making and packaging machine according to an embodiment of the present invention. It is a principal part enlarged side view of the packaging machine. It is also a front view. It is sectional drawing by the AA line of FIG. It is a principal part side view which shows the state which pulled out the former unit ahead. It is a principal part side view which shows the state rotated further forward. It is a principal part side view which shows the state which removed the former unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag making packaging machine 2 Main body 10 Former unit 20 Slide member (support member)
30 Rotating member (supporting member)

Claims (2)

In a bag making and packaging machine that feeds articles while forming a packaging bag by bending a belt-like film into a tube by a former,
A support member for detachably supporting the former is provided,
The support member is configured to support the former movably from a first position where a packaging operation is performed to a second position lower than the first position. Packaging machine. In the bag making and packaging machine according to claim 1,
The support member is
A slide member supported so as to be slidable back and forth on the packaging machine body side member;
A rotating member that detachably supports the former and is connected to the slide member so as to be rotatable forward about a lower portion;
A bag making and packaging machine configured to move the former from a first position to a second position by sliding the slide member forward and rotating the rotation member forward.

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