JP4255958B2 - Packaging apparatus and packaging method - Google Patents

Description

  In the present invention, a cylindrical continuous body is formed with a film sheet that is continuously fed out in the horizontal direction, and after filling an article to be packaged such as a confectionery piece inside, the front and back of the filling portion are melted to form a pillow packaged product. This relates to a horizontal type packaging apparatus.

As the above-described packaging device, a device disclosed in JP-A-8-230809 (Patent Document 1) has been known.
FIG. 14 is a plan view of a conventional packaging device, and FIG. 15 is a side view of a partially cutaway portion thereof.
The transfer rods (10) and (10) that pass vertically through the article slide plate (14), which is the conveyance path for the packaged item (A), are disposed on the endless chain (15) at a predetermined pitch, and The chain (15) is driven by a sprocket (1). Above the sprocket (1), a roll (11) and a feed roller (17) (17) around which a packaging sheet (12) is wound are disposed and fed from the feed roller (17) (17). The package sheet (12) thus formed is inserted into a shaping cylinder (13) as a former and shaped into a cylindrical continuous body (20).

  A pair of center seal rollers (16), (16) and an end seal device (18) are arranged in this order on the downstream side of the shaping cylinder (13). There are sandwiched heat plates (18b) and (18b) projecting from the rotary shafts (18a) and (18a). Further, a discharge conveyor (not shown) is continuously provided downstream of the end seal device (18).

  In this case, the packaging sheet (12) sent out from the feed rollers (17) and (17) is rounded in the width direction by passing through the shaping cylinder (13). As a result, the tubular continuous body (20) having a substantially Ω-shaped cross section in which the palm portion (19) where both side edges of the packaging sheet (12) overlap is suspended from the lower portion is sent out from the shaping cylinder (13).

  On the other hand, at the entrance of the shaping cylinder (13), the article to be packaged (A) is pushed horizontally into the cylindrical continuous body (20) by the transfer rod (10) provided on the chain (15). And the palm part (19) (the overlapping part of both side edges of the packaging sheet (12)) hanging from the lower part of the cylindrical continuous body (20) delivered from the shaping cylinder (13) is a center seal roller (16) (16) After being clamped and welded at the end of the end seal device (18), the pair of articles to be wrapped (A) grouped by the number of packaging units (three in the example shown in the figure) (18b) (18b) is sandwiched and welded, and simultaneously cut. Thereby, the pillow package product (H) in which the article to be packaged (A) is packaged for each number of packaging units is completed, and this is discharged by a discharge conveyor (not shown).

In this case, the article to be packaged (A) is fed by the transfer rod (10) into the open part at the upstream end of the cylindrical continuous body (20) shaped by the shaping cylinder (13). Therefore, unlike the vertical pillow packaging machine in which a package is dropped freely and filled into a vertically long cylindrical continuous body shaped by a film sheet sent downward, the granular package shown in FIGS. In addition to (A), it is possible to wrap a flat article (A) such as rice cracker in a state where it is overlapped, or to wrap an article (A) filled in a tray or the like.
JP-A-8-230809

  However, in the above-described conventional packaging device, since the article to be packaged (A) is not stable in the cylindrical continuous body (20) fed from the shaping cylinder (13), the required amount of the packaging sheet (12) increases. There was a problem that effective use of resources could not be achieved. This problem will be further described in detail.

  Since the conventional packaging apparatus is configured to send the article to be packaged (A) horizontally, the article to be packaged (A) is in a free state in the cylindrical continuous body (20) fed from the shaping cylinder (13). It is not stable. Therefore, the alignment state of the objects to be packaged (A) and (A) is easily broken and diffused, and the pitch between the groups of objects to be packaged (A) (collected for each number of packaging units) is easily shifted. . As a result, the mutual pitch of the set of packages (A) may be reduced. Therefore, in this state, when the end seal device (18) clamps between the sets of the packages (A) collected for each number of packaging units, the package (A) becomes the end seal device (18). The sandwiched heat plates (18a) and (18b) are broken and damaged, or the fragments generated thereby are caught in the end seal portion, so that the sealing performance cannot be secured. Considering such a problem, in the conventional packaging device, each of the packages (A) collected for each number of packaging units is set by setting a large pitch between the groups of packages (A) in advance. The space between the sets is provided with a margin so that the object to be packaged (A) is not pinched by the end seal device (18). For this reason, the space ratio in the pillow package (H) is inevitably increased, and as a result, the required amount of the packaging sheet (12) cannot be reduced, and effective use of resources cannot be achieved.

The present invention has been made in view of such points.
`` A former that shapes a cylindrical continuous body (20) that is long in the horizontal direction by rounding the continuously sent packaging sheet (12) in the width direction,
In a state where the packaged items (A) are grouped by the number of packaging units, an article supply device that supplies the cylindrical continuous body (20) at a set pitch from the upstream of the former,
A center seal device for welding both side edges of the packaging sheet (12) shaped into the cylindrical continuous body (20) in an overlapping state;
Comprising an end seal device disposed downstream of the center seal device;
The end seal device includes a set of packages (A) of the number of packaging units positioned at the most downstream portion of the cylindrical continuous body (20), and packages of the number of packaging units adjacent to the upstream side thereof. In the `` packaging apparatus '' having a function of welding and cutting by sandwiching the cylindrical continuous body (20) between the sets of (A), the space in the pillow packaged product (H) An object is to reduce the required amount of the packaging sheet (12) by reducing the rate.

The packaging device according to the present invention is
A former that shapes a cylindrical continuous body (20) that is long in the horizontal direction by rounding the continuously fed packaging sheet (12) in the width direction;
In a state where the packaged items (A) are grouped by the number of packaging units, an article supply device that supplies the cylindrical continuous body (20) at a set pitch from the upstream of the former,
A center seal device for welding both side edges of the packaging sheet (12) shaped into the cylindrical continuous body (20) in an overlapping state;
Comprising an end seal device disposed downstream of the center seal device;
The end seal device includes a set of packages (A) of the number of packaging units positioned at the most downstream portion of the cylindrical continuous body (20), and packages of the number of packaging units adjacent to the upstream side thereof. In the packaging device, which has a function of welding and cutting by sandwiching the cylindrical continuous body (20) between the sets of (A),
An inclination mechanism is provided for inclining the cutting target part, which is filled with the set of the articles to be packaged (A) located at the most downstream part of the cylindrical continuous body (20), in a posture that becomes lower toward the tip. And
The end seal device welds and cuts the rear end of the cutting target portion inclined to the posture by the inclination mechanism, and a pair of heaters for pressing the cylindrical continuous body (20) Has blocks,
The tilt mechanism is a support arm that returns to the upstream side through the lower region after moving at the same speed as the cylindrical continuous body (20) while maintaining a state in contact with the lower surface of the cylindrical continuous body (20). Comprising a conveyor comprising
Furthermore, an interference prevention device is provided for lifting the cutting target portion protruding from the downstream end of the conveyor,
The heater block clamps the cylindrical continuous body (20) after the cutting target portion is lifted by the interference preventing device.
The “number of packaging units” is not limited to a plurality, and may be singular.
According to the above-described configuration , since the cutting target part is inclined by the inclination mechanism in a posture that becomes lower toward the tip, the packaged item (A) in the inclined cutting target part is pre-packed toward the tip. Become. Then, since the rear end of the part to be cut is pinched by the end seal device after being pre-packed, there is less concern that the article (A) to be packaged bites into the pinched part. Thus, unlike the conventional one, it is not necessary to set a large pitch in advance between the groups of the articles to be packaged (A) collected for each number of packaging units so as to have a margin.

Moreover , the support arm which moved to the downstream end of the conveyor supports the rear side of the cutting target portion from below, and thereby supports the cutting target portion in a suspended state. Then, the part to be cut in the hanging state is lifted by the interference preventing device, and after the lifting, the heater block sandwiches and welds the cylindrical continuous body (20).

In the case of “equipped with a vibration applying mechanism for vibrating the cutting target part”, the article to be packaged (A) in the cutting target part is further pre-packed by the vibration by the vibration applying mechanism.

The packaging method according to the present invention comprises:
A cylindrical continuous body (20) filled with a set pitch in the longitudinal direction in a state in which the articles to be packaged (A) are gathered together for each number of packaging units, is conveyed in a horizontal posture in the longitudinal direction,
A set of packages (A) having the number of packaging units located at the most downstream portion of the cylindrical continuous body (20) and a set of packages (A) having the number of packaging units adjacent to the upstream side of the set. In the packaging method of welding and cutting by sandwiching the cylindrical continuous body (20) between each other,
A state in which the cutting target portion filled with the set of the articles to be packaged (A) located at the most downstream portion of the cylindrical continuous body (20) is in contact with the lower surface of the cylindrical continuous body (20). While maintaining the same speed as the cylindrical continuous body (20), it is tilted to a lowering posture toward the tip by a tilting mechanism composed of a conveyor having a support arm that returns to the upstream side through the lower region. After
Lifting the cutting target part by an interference prevention device that lifts the cutting target part protruding from the downstream end of the conveyor,
Thereafter, the rear end of the cutting target portion after the inclination is welded and cut by the pair of heater blocks for clamping the cylindrical continuous body (20) .
As a result, like the invention relating to the packaging device , the cutting target portion is inclined to a posture that becomes lower toward the tip, and the packaged article (A) in the cutting target portion is in a state of being pre-packed toward the tip. . Then, the rear end of the cutting target portion is welded and cut in this pre-packed state.

According to the packaging apparatus and the packaging method of the present invention, it is not necessary to set a large pitch in advance between the groups of the articles to be packaged (A) collected for each number of packaging units. Accordingly, since the space ratio in the pillow packaged product (H) is reduced and the tight packaging state is achieved, the required amount of the packaging sheet (12) is reduced.
Further, in the packaging apparatus having the vibration applying mechanism that vibrates the cutting target portion, the packaged object (A) in the cutting target is further pre-packed, so that the required amount of the packaging sheet (12) is further reduced. Become.

Next, the above-described embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a packaging apparatus according to an embodiment of the present invention, and a roll (11) around which a packaging sheet (12) made of a heat-melting resin is wound is arranged on the upper part of the apparatus body (31). It is installed. Also, below the roll (11), a set of confectionery pieces (99) (packages) grouped together for each number of packaging units (single or plural) is received from a supply device (not shown). A transport device (34) that transports the packaging sheet (12) drawn from the roll (11) on the downstream side of the transport device (34). ) Is provided with a shaping cylinder (13) as a former. Further, on the downstream side of the shaping cylinder (13), the gripping part (19) hanging down from the lower part of the cylindrical continuous body (20) (the overlapping part on both side edges of the packaging sheet (12)) is clamped to the downstream side. A pair of feed rollers (21) and (21) for pulling, a center seal roller (16) and (16) as a center seal device for welding by hot-pressing the joint portion (19), and for each number of packaging units A pre-packing device (4) (corresponding to the “inclination mechanism”, which is a specific matter of the invention described above) is provided, which travels in a state where the grouped confectionery pieces (99) are held between the upper and lower sides. . Further, on the further downstream side of the pre-packing device (4), the semi-wrapped product (S) located at the tip of the cylindrical continuous body (20) (corresponding to the “cutting target part” which is the specific matter of the invention described above) An end seal device (6) that cuts at the same time as the rear end is clamped by welding up and down, and a discharge conveyor (38) that receives the pillow package (H) cut by this through a chute (37) are provided. Yes.

Details of each part will be described below.
[About roll (11) etc.]
The roll (11) is obtained by winding a long strip-shaped packaging sheet (12), and below the pair of feed rollers (32) (32) for pulling out the packaging sheet (12) from the roll (11). ) And a guide roller (33) on the downstream side thereof.

[About transfer device (34) etc.]
The conveyance device (34) (corresponding to the “article supply device”, which is the specific matter of the invention described above) disposed below the roll (11) and the like, is provided with a drive side sprocket (35) and a driven side sprocket (36). The transfer rods (10) and (10) are arranged at a predetermined pitch on the outer periphery of the chain (15) wound between them. As shown in FIG. 2, the transfer rods (10) and (10) The article travels in a slit (140) formed in the article slide plate (14), which is a conveyance path for the confectionery piece (99) as the article (A). Accordingly, the confectionery piece (99) placed on the article slide board (14) is pushed in the transport direction by the transfer basket (10) that travels in the slit (140), and the shaping cylinder (13) side described later It is conveyed to.

[About shaping cylinder (13)]
The shaping cylinder (13), which is a former for shaping the packaging sheet (12) drawn from the roll (11) into a cylindrical continuous body (20), is open at both ends in the axial direction, as shown in FIG. In addition, a lower slit (130) is formed on the bottom wall of the shaping cylinder (13) over the entire area in the axial direction. A pair of sheet alignment plates (131) and (131) that are opposed to each other across the lower slit (130) hang down from the upstream end of the lower slit (130).

  Further, the inlet part (132) of the shaping cylinder (13) is opened upstream and downward, and the inlet part (132) is provided on the transfer rod (10) (10) provided in the transport device (34). It is in a state of covering the downstream end of the traveling area. Further, as shown in FIG. 3, seat guide vanes (133) and (133) are provided on both side walls of the shaping cylinder (13), which are positioned at the lower end corner portion of the upstream end and are gradually lowered toward the downstream side. ing.

  Therefore, the packaging sheet (12) pulled out from the roll (11) is rounded in the width direction by being inserted into the shaping cylinder (13) and shaped into the cylindrical continuous body (20), and the conveying device ( The group of confectionery pieces (99) pushed out from the downstream end of 34) by the transfer basket (10) is pushed into the inlet part (132) of the shaping cylinder (13), thereby forming a set in the cylindrical continuous body (20). The confectionery piece (99) group (collected for each number of packaging units) is supplied at a set pitch. Further, when the cylindrical continuous body (20) is sent out from the shaping cylinder (13), both side edges (120) (121) in the width direction of the packaging sheet (12) constituting the cylindrical continuous body (20), Overlapping by the sheet mating plates (131) (131) forms a palm portion (19).

[About feed rollers (21) and (21) and center seal rollers (16) and (16)]
As shown in FIG. 3, the feed rollers (21) and (21) disposed on the downstream side of the shaping cylinder (13) are provided with the above-mentioned palm portion (19) (packaging) that hangs down from the lower part of the cylindrical continuous body (20). This is a configuration in which the sheet (12) is rotated in a state where the side edges (120, 121) are overlapped) from the front and back.

  Further, the center seal rollers (16) (16) disposed on the downstream side of the feed rollers (21) (21) are heated by a heater (not shown) and from the lower part of the cylindrical continuous body (20). The hanging palm (19) is rotated while heated and clamped from the front and back.

  Accordingly, the palm portion (19) at the lower part of the cylindrical continuous body (20) fed from the shaping cylinder (13) is pressed between the rotating feed rollers (21) and (21) while being pressed by the downstream center seal roller. (16) While being fed to the portion (16), the palm portion (19) is heated and pressed by the center seal rollers (16) (16). As a result, the palm portion (19), which is the overlapping portion between the side edges (120) and (121) of the packaging sheet (12), is continuously welded by the center seal rollers (16) and (16).

[About pre-packing device (4)]
As shown in FIGS. 4 and 5, the pre-packing device (4) disposed downstream of the center seal rollers (16) and (16) is provided between a pair of left and right side plates (40a) and (40b). And a pair of conveyors (41) (41) parallel to each other.

  Each conveyor (41) includes a large-diameter sprocket (44a) (44b) fixed in a non-rotating state to a drive shaft (43) penetrating from one side plate (40a) to the other side plate (40b). At the same time, these large-diameter sprockets (44a) (44b) are located inside the side plates (40a) (40b). Also, small-diameter sprockets (45a) and (45b) respectively corresponding to the large-diameter sprockets (44a) and (44b) are attached to the inside of the downstream end portions of the side plates (40a) and (40b).

  A set of large-diameter sprocket (44a) and small-diameter sprocket (45b) located on one side plate (40a) side, and a set of large-diameter sprocket (44a) and small-diameter sprocket (45b) located on the other side plate (40b) side In each of these, the chain (46) (46) is hung separately, and the horizontal rod (47) corresponding to the `` support arm '' which is the above-mentioned invention specific matter is included in these chains (46) (46). (47) is installed in the conveying direction at a set pitch (substantially equal to the interval between the end seals of the pillow package (H)).

As shown in FIG. 5, gears (48) and (48) meshing with each other are fixed to one end of each of the drive shafts (43) and (43), whereby both the drive shafts (43) and (43) are the same. Synchronous rotation at high speed.
The gear (48) is driven by a drive motor (87) as a drive source of an end seal device (6) described later. The gear (48) for the pre-packing device (4) may be driven by a motor different from the drive motor (87).

  Further, the upstream side end vicinity of the side plates (40a) and (40b) constituting the pre-packing device (4) is supported by the base shaft (49) so as to be rotatable up and down, and the front plate of the pre-packing device (4). The lower surface is received by a support plate (4a) erected on the apparatus main body (31) (see FIG. 1). In addition, a cam follower (42) is disposed in the lower part of the side plate (40a) (40b) near the downstream end, and the cam follower (42) is a drive motor (87) for an end seal device (6) described later. ) Is brought into contact with the outer peripheral cam portion (590) of the cam plate (59) rotated by.

  In the present embodiment, the pre-packing device (4) is configured to be rotatable up and down by a base shaft (49) in the vicinity of the upstream end, and a cam follower (42 in the lower portion in the vicinity of the downstream end). ) Abuts on the outer peripheral cam portion (590) of the cam plate (59). Accordingly, when the cam follower (42) moves along the outer peripheral cam portion (590), the front-packing device (4) swings up and down around the base end shaft (49), thereby The semi-wrapped product (S) at the tip of the cylindrical continuous body (20) (the portion protruding from the tip of the pre-packing device (4)) is vibrated.

[End seal device (6)]
The end seal device (6) is configured as shown in FIG. 6, and is a combination of the lower block lifting device (8) shown in FIG. 7 and the upper block lifting device (7) shown in FIG.
<About the lower block lifting device (8)>
As shown in FIG. 7, the lower block elevating device (8) has a pair of vertical beams (811) (814) opposed in the horizontal direction connected by a central horizontal beam (810) and a lower horizontal beam (812) below it. The lower heater lifting / lowering frame (81) is provided, and the lower heater block (80) is placed and fixed on the central horizontal rail (810). In addition, as shown in FIG. 9, the lower heater block (80) has a concave groove (800) that opens upward and a heater (801) embedded therein.

  Guide rollers (813) and (813) are arranged on the outer surface of the pair of vertical bars (811) and (814) constituting the lower heater lifting frame (81) at intervals in the vertical direction. These guide rollers (813) (813) are upper and lower vertical rails (711) (714) formed on a pair of left and right vertical rails (71) of an upper heater lifting frame (71) that constitutes an upper block lifting device (7) (see FIG. 8) described later. It travels in the traveling groove (711a) (714a) in the direction.

  As shown in FIG. 7, one vertical rail (814) constituting the lower heater lifting frame (81) is connected to the outer peripheral portion of the rotating disk (824) by a bracket (B) bent in a crank shape. Yes. The upper and lower portions of the other vertical beam (811) are connected to the outer peripheral portions of the upper and lower rotary disks (821) and (823) by the same crank-shaped bracket (B) as described above.

  The rotating disks (821) (823) (824) are respectively attached to the rotating shafts (821a) (823a) (824a) having sprockets (821b) (823b) (824b) and sprockets (821b) (823b) is connected to a sprocket (831) provided at one end of the drive shaft (83) via a transmission chain (84). The sprocket (824b) fixed to the rotating shaft (824a) of the other rotating disk (824) has a transmission chain (85) connected to the sprocket (832) provided at the other end of the driving shaft (83). The drive shaft (83) is connected to a drive motor (87) via a sprocket (833) and a drive chain (86).

  Accordingly, when the drive motor (87) is operated, the rotational force is transmitted to the drive shaft (83) via the drive chain (86) and the sprocket (833), and this rotates. Then, the rotational force is transmitted through the path of the sprocket (831) → the transmission chain (84) → the sprocket (821b) (823b) at one end of the drive shaft (83), and the rotating disks (821) (823) move at the same speed. Rotate synchronously. Further, the rotational force is also transmitted through the path of the sprocket (832) → the transmission chain (85) → the sprocket (824b) provided at the other end of the drive shaft (83), and the rotating shaft (824a) is transmitted to the sprocket (824b). The rotating disk (824) connected via the rotation rotates. As a result, the rotating disks (821), (823), and (824) rotate synchronously at the same speed, and the lower heater lifting frame (81) that includes the lower heater block (80) moves in a circular motion while maintaining a vertical posture. To do.

<About the upper block lifting device (7)>
FIG. 8 is a perspective view of the upper block lifting device (7).
The upper block elevating device (7) includes a pair of vertical rails (711) (714) facing in the horizontal direction and connected to the upper frame (710) at the upper end and the lower frame (712) at the lower end. 71). The upper crosspiece (710) is provided with elevating shafts (72) and (72) penetrating up and down at intervals in the longitudinal direction, and an end nut (73) is provided at the upper end of the elevating shafts (72) and (72). ) (73) are screwed together, and the upper heater block (70) is fixed to the lower end.

  As shown in FIG. 9, the heater (75) is embedded in the upper heater block (70), and the recess of the lower heater block (80) described above is placed in the narrow groove (74) opened downward. A cutting blade (79) that enters the groove (800) is provided. Further, a push spring (76) externally fitted to each lifting shaft (72) is interposed in a compressed state between the upper heater block (70) and the upper bar (710), and the cutting blade (79) is The fixing pins (790) and (790) are fixed to the holding block (89) fixed to the lower surface of the upper rail (710). Therefore, the elevating shafts (72) and (72) move up and down with respect to the upper rail (710) together with the upper heater block (70) while being urged downward by the push springs (76) and (76). Therefore, when the upper heater block (70) is raised, the upper heater block (70) rises with respect to the cutting blade (79) fixed to the holding block (89), and thereby the cutting blade (79) It projects downward from the lower end of the narrow groove (74).

  The bracket (715) fixed to the lower frame (712) of the upper heater lifting frame (71) is provided with a link (77) and a crank (78) rotatably coupled thereto. A support shaft (64), which is a rotation fulcrum of the crank (78), is attached to the fixed surface (65). A cam follower (67) is attached to the tip of the horizontal shaft (66) protruding from the input end of the crank (78), and the cam follower (67) is a semicircular cam formed on the cam disk (68). Located in the groove (680).

  The sprocket (682) provided at the tip of the cam shaft (681) protruding from the back surface of the cam disk (68) has a sprocket (832) at one end of the drive shaft (83) rotated by the drive motor (87). ) Is connected to the transmission chain (85). Therefore, the rotational force of the drive motor (87) is transmitted through the path of drive shaft (83) → sprocket (832) → transmission chain (85) → sprocket (682) → cam shaft (681) → cam disk (68). Thus, the cam disk (68) rotates. Then, as a result of the cam follower (67) moving along the cam groove (680) of the cam disk (68), the crank (78) rotates about the support shaft (64), and the link (77) The upper heater elevating frame (71) connected via the elevates.

<< Combination of Upper Block Lifting Device (7) and Lower Block Lifting Device (8) >>
A pair of left and right vertical bars (811) (814) of the lower heater lifting frame (81) are arranged along the inside of the vertical rails (711) (714) of the upper heater lifting frame (71), and When the guide rollers (813) (813) on the outer surfaces of the vertical rails (811) (814) are properly fitted in the running grooves (711a) (714a) of the vertical rails (711) (714), FIG. As shown, the upper and lower block elevating devices (7) and (8) constituting the end seal device (6) are combined.

  When the drive motor (87) rotates in this combined state, the lower heater lifting frame (81) of the lower block lifting device (8) is in the vertical posture by the rotating disks (821) (823) (824) as described above. The upper heater elevating frame (71) is moved up and down by the rotation of the crank (78). In this case, the guide rollers (813) (813) of the lower heater lifting frame (81) are travel grooves (711a) (714a) formed in the vertical rails (711) (714) of the upper heater lifting frame (71). Therefore, only the horizontal component of the rotational motion of the lower heater lifting frame (81) in the vertical posture is transmitted to the upper heater lifting frame (71). As a result, as shown in FIG. 12, the lower heater block (80) has the same shape as the circular orbit (P2) (the circular orbit on which the outer peripheral bracket (B) of the rotating disks (821) (823) and (824) moves). ), The upper heater block (70) has a semicircular locus (P1) similar to the cam groove (680) (see FIG. 8) of the cam disk (68) described above (the horizontal width is the circular orbit (P2 ) Along the same size). And in this embodiment, the dimensions of each part are set so that the lower part of the semicircular locus (P1) and the upper part of the circular orbit (P2) partially overlap. The upper heater block (70) presses against the lower heater block (80), and thereby the upper heater block (70) is lifted upward together with the lifting shaft (72) against the urging force of the push spring (76). As a result, the cutting blade (79) enters the concave groove (800) of the lower heater block (80), and the rear end (S2) of the semi-packaged product (S) is welded and simultaneously cut.

<Interference prevention crank>
Welding / cutting of the rear end (S2) of the semi-packaged product (S), which is the cutting target part located at the front end of the cylindrical continuous body (20), in the vicinity of the lifting area of the upper and lower heater blocks (70), (80) In order to smoothly guide the portion between the upper and lower heater blocks (70), (80), the crank device (5), which is the aforementioned “interference prevention device” shown in FIGS. The crank arm (51) constituting the crank device (5) is rotatably supported on the fixed surface (65) by the support shaft (63). The cam follower (52) provided at the input end of the crank arm (51) is in contact with the outer peripheral cam portion (530) of the cam disk (53) attached to the drive shaft (83). A horizontal bar (50) is provided at the output end of the crank arm (51). The crank arm (51) is urged toward the cam disk (53) by a tension spring (54). Accordingly, when the cam disk (53) rotates together with the drive shaft (83), the crank arm (51) rotates, and as a result, as shown in FIGS. 1 and 6, the crank arm (51) of the crank device (5) is rotated. ) The horizontal bar (50) at the upper end makes a circular arc operation in the vicinity of the up-and-down area of the upper and lower heater blocks (70) and (80).

[Explanation of interlocking relationship between pre-packing device (4) and end seal device (6)]
Next, the interlocking relationship between the pre-packing device (4) and the end seal device (6) will be described.
As shown in FIG. 11 and FIG. 13, the adjacent part of the filling part of the confectionery piece (99) group in the cylindrical continuous body (20) is the horizontal bar (47) (47) of the pre-packing device (4). In this state, the conveyors (41) and (41) run.

  In (a) of FIG. 13, the semi-wrapped product (S) located at the front end in the transport direction of the cylindrical continuous body (20) (the front end (S1) is already welded by the end seal device (6)). The rear end (S2) is clamped by the upper and lower heater blocks (70) and (80) of the end seal device (6) to be welded and cut. In this state, the lower surface of the semi-packaged product (S) is received by the tray (T) that is appropriately moved on the track and kept in a horizontal posture, so that the upper and lower heater blocks (70) (80) are welded. It is prevented that wrinkles occur in the part.

  Next, as shown in (a), the pillow package (H) made by welding and cutting with the upper and lower heater blocks (70) (80) is transferred from the chute (37) to the discharge conveyor (38). On the other hand, the new semi-wrapped product (S) on the upstream side of the upper and lower heater blocks (70), (80) is supplied to the horizontal bar (47) of the conveyor (41) (41) (see Fig. 1). 47) hangs down in the state of being pinched, and thereby the semi-wrapped product (S) is maintained in a posture of being lowered toward the tip. As a result, the confectionery pieces (99) group is pre-packed in the semi-wrapped product (S).

  Subsequently, in the step shown in (c), the pre-packing device (4) swings up and down around the base end shaft (49) (see FIG. 11) as a fulcrum. The confectionery pieces (99) are further pre-packed. Therefore, in the present embodiment, the combination of the cam follower (42) provided in the lower portion near the downstream end of the pre-packing device (4) and the cam plate (59) in contact with the cam follower (59) is a specific matter of the invention described above. Corresponds to “vibration applying mechanism”.

  After that, as shown in (d) to (e) and FIG. 11, in order to avoid interference between the lower heater block (80) rotating in a vertical posture and the semi-packaged product (S), the crank device (5) In operation, the horizontal bar (50) at the tip of the bar moves diagonally upward along an arc-shaped locus in the upper area of the lower heater block (80). As a result, the semi-wrapped product (S) (the cutting target projecting at the downstream end of the pre-packing device (4)) is lifted, and the lower heater block (80) in the lower space of the lifted semi-packaged product (S) Rises (see (e) and FIG. 11).

  Next, as shown in (f) to (c), the lower surface of the semi-packaged product (S) lifted by the horizontal bar (50) of the crank device (5) is received by the tray (T) that is appropriately moved on the track. When the horizontal posture is passed, the upper heater block (70) and the lower heater block (80) are matched by returning to the step (a). Thereby, the rear end (S2) of the half-wrapped product (S) is welded and cut at the same time, and the pillow product (H) made by repeating this operation is removed from the chute (37) as shown in FIG. Supplied to the discharge conveyor (38). In the step (f), the tray (T) contacts the lower surface of the semi-wrapped product (S), while the horizontal bar (50) of the crank device (5) separates from the semi-wrapped product (S). In the process (c), before the upper and lower heater blocks (70) (80) sandwich the rear end (S2) of the semi-packaged product (S), the horizontal bar at the upstream end of the conveyor (41) (41). (47) and (47) sandwich the cylindrical continuous body (20) up and down.

As described above, according to the packaging device according to the present embodiment, as shown in FIG. 11, the semi-wrapped product (S) that is the cutting target portion located at the front end in the transport direction of the cylindrical continuous body (20). Hangs downward while being sandwiched between the horizontal bars (47) and (47) of the conveyor (41) and (41), so that the confectionery pieces (99) are pre-packed in the semi-wrapped product (S). It becomes a state. Therefore, even if the pitch between the confectionery pieces (99) grouped for each number of packaging units is set large in advance and does not have a margin, the object to be packaged (A ) Is less worried. Accordingly, since the space ratio in the pillow packaged product (H) is reduced and the tightly packed state is obtained, the required amount of the packaging sheet (12) is reduced.
In the above embodiment, the semi-wrapped product (S) at the tip of the cylindrical continuous body (20) is attached to the horizontal bars (47) (47) provided on the conveyors (41) (41) of the pre-packing device (4). ), But the upper conveyor (41) is not essential. If at least the lower conveyor (41) is provided, the rear end (S2) of the half-wrapped product (S) is supported from below and the half-wrapped product (S) can be placed in a forward tilted posture. This is because the package becomes pre-packed, tight packaging becomes possible, and the required amount of the packaging sheet (12) is reduced.

  In addition, the rear end (S2) of the semi-packaged product (S) that is sandwiched between the horizontal bars (47) and (47) of the conveyor (41) and (41) and hangs downward is placed horizontally or diagonally up and down. The pair of heater blocks that come in contact with and separate from each other may be clamped, whereby welding and cutting may be performed.

The front view of the packaging apparatus which concerns on embodiment of this invention Longitudinal section of article sliding plate (14) The perspective view of the state where the vicinity of the arrangement part of the shaping cylinder (13) is looked up from below Longitudinal sectional view of the pre-packing device (4) cut in the transport direction VV line sectional view of FIG. Partially cutaway perspective view of the arrangement of the end seal device (6) Perspective view of lower block lifting device (8) Perspective view of upper block lifting device (7) Sectional view of the arrangement of the upper heater block (70) and lower heater block (80) Perspective view of crank device (5) Diagram explaining end seal operation Diagram explaining end seal operation Diagram explaining the interlocking relationship between the pre-packing device (4) and the end seal device (6) Illustration of conventional example Illustration of conventional example

Explanation of symbols

(6) ... End seal device
(12) ・ ・ ・ Packaging sheet
(13) ・ ・ ・ Shaping cylinder
(20) ... Cylindrical continuum
(70) ・ ・ ・ Upper heater block
(80) ... Lower heater block
(A) ・ ・ ・ Packaged items

Claims (3)

A former that shapes a cylindrical continuous body (20) that is long in the horizontal direction by rounding the continuously fed packaging sheet (12) in the width direction;
In a state where the packaged items (A) are grouped by the number of packaging units, an article supply device that supplies the cylindrical continuous body (20) at a set pitch from the upstream of the former,
A center seal device for welding both side edges of the packaging sheet (12) shaped into the cylindrical continuous body (20) in an overlapping state;
Comprising an end seal device disposed downstream of the center seal device;
The end seal device includes a set of packages (A) of the number of packaging units positioned at the most downstream portion of the cylindrical continuous body (20), and packages of the number of packaging units adjacent to the upstream side thereof. In the packaging device, which has a function of welding and cutting by sandwiching the cylindrical continuous body (20) between the sets of (A),
An inclination mechanism is provided for inclining the cutting target part, which is filled with the set of the articles to be packaged (A) located at the most downstream part of the cylindrical continuous body (20), in a posture that becomes lower toward the tip. And
The end seal device welds and cuts the rear end of the cutting target portion inclined to the posture by the inclination mechanism, and a pair of heaters for pressing the cylindrical continuous body (20) Has blocks,
The tilt mechanism is a support arm that returns to the upstream side through the lower region after moving at the same speed as the cylindrical continuous body (20) while maintaining a state in contact with the lower surface of the cylindrical continuous body (20). Comprising a conveyor comprising
Furthermore, an interference prevention device is provided for lifting the cutting target portion protruding from the downstream end of the conveyor,
The packaging device , wherein the heater block clamps the cylindrical continuous body (20) after the cutting target portion is lifted by the interference preventing device. In the packaging device according to claim 1,
A packaging device provided with a vibration applying mechanism that vibrates the section to be cut. A cylindrical continuous body (20) filled with a set pitch in the longitudinal direction in a state in which the articles to be packaged (A) are gathered together for each number of packaging units, is conveyed in a horizontal posture in the longitudinal direction,
A set of packages (A) having the number of packaging units located at the most downstream portion of the cylindrical continuous body (20) and a set of packages (A) having the number of packaging units adjacent to the upstream side of the set. In the packaging method of welding and cutting by sandwiching the cylindrical continuous body (20) between each other,
A state in which the cutting target portion filled with the set of the articles to be packaged (A) located at the most downstream portion of the cylindrical continuous body (20) is in contact with the lower surface of the cylindrical continuous body (20). While maintaining the same speed as the cylindrical continuous body (20), it is tilted to a lowering posture toward the tip by a tilting mechanism composed of a conveyor having a support arm that returns to the upstream side through the lower region. After
Lifting the cutting target part by an interference prevention device that lifts the cutting target part protruding from the downstream end of the conveyor,
Thereafter, the packaging method of welding and cutting the rear end of the portion to be cut after the inclination by a pair of heater blocks for clamping the cylindrical continuous body (20) .

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