WO2010029873A1

WO2010029873A1 - Holding pocket of turret packaging machine

Info

Publication number: WO2010029873A1
Application number: PCT/JP2009/065255
Authority: WO
Inventors: 櫛橋重信
Original assignee: 日本たばこ産業株式会社
Priority date: 2008-09-11
Filing date: 2009-09-01
Publication date: 2010-03-18
Also published as: JP2011246126A

Abstract

A holding pocket (50) of a turret packaging machine has a pocket body (51) capable of reciprocal motion between the advance position for receiving a semi-wrapped pack (SP) of a cigarette bundle (CB) and the retraction position which is remote from the advance position, and a leaf spring unit (64) provided in the pocket body (51). The leaf spring unit (64) projects partially into the pocket body (51) through a center opening (62) of the pocket body (51), and the semi-wrapped pack (SP) received inside of the pocket body (51) presses on the inner surface of the pocket body (51).

Description

Turret type packaging machine holding pocket

The present invention relates to a turret type packaging machine, and more particularly to a holding pocket of a turret type packaging machine that can reliably hold a product to be packaged.

One such product is known as a bundle of filter cigarettes or cigarettes, that is, a cigarette bundle. For example, this cigarette bundle can be obtained by using a turret type packaging machine disclosed in Patent Document 1 with an inner packaging material and Wrapped with an outer packaging material, the packaging machine forms a cigarette bundle into a cigarette pack.

Specifically, the packaging machine of Patent Document 1 includes a hollow mandrel and a holding pocket, and the holding pocket has an open end. The aforementioned inner and outer packaging materials are first wound sequentially around the outer periphery of the mandrel, and these packaging materials are formed as inner and outer rectangular tubes surrounding the mandrel. One end of each of these rectangular tubes is folded to provide a double closed end that closes one open end of the mandrel, whereas the other end of the inner rectangular tube protrudes from the other end of the outer rectangular tube, It is kept open. Thereafter, the cigarette bundle passes through the mandrel and is received into the holding pocket from the open end of the holding pocket together with the inner and outer rectangular tubes. Specifically, since the inner and outer rectangular tubes have double closed ends, the cigarette bundle passing through the mandrel collides with the closed ends of the inner and outer rectangular tubes and is received in the holding pocket together with these rectangular tubes. At this time, the cigarette bundle in the holding pocket and the inner and outer rectangular tubes form a semi-wrapping pack in which the cigarette bundle is surrounded by the inner and outer rectangular tubes.

After this, finishing folding is performed on the other end of the inner rectangular tube. This finish folding forms the other end of the inner rectangular tube into a closed end, the so-called top wall, at which point the cigarette pack is complete.

Japanese Patent No. 3437753

In the case of Patent Document 1, prior to receiving the semi-packed pack, the holding pocket moves to the mandrel side and is positioned adjacent to the mandrel (see h in FIG. 3 of Patent Document 1), while receiving the semi-packed pack Later, the holding pocket moves away from the mandrel and returns to its original position.
When the holding pocket returns to its original position, the holding pocket moves with its open end as the rear end, so that the semi-packing pack itself or a cigarette bundle in the semi-packing pack may jump out of the holding pocket from the opening end of the holding pocket. is there.

Such pop-out of the half-pack or cigarette bundle not only disables the above-described finishing folding, but also the collapsing half-packing pack or cigarette bundle collides with a folding guide or the like that performs the folding of the finish, and the packaging. The machine may be shut down.
An object of the present invention is to provide a holding pocket of a turret type packaging machine that can reliably prevent a product from jumping out of the holding pocket.

To achieve the above object, the present invention provides a holding pocket of a turret type packaging machine, wherein the packaging machine holds the semi-packaging pack in a state where folding of a packaging material for packaging a product is incomplete. And then the folding of the packaging material is completed with respect to the semi-packed pack supplied to the holding pocket, and the holding pocket has an open end for receiving the semi-packed pack. A pocket body, wherein the pocket body is reciprocable between an advanced position for receiving the semi-packed pack and a retracted position away from the advanced position; and the pocket body is disposed on the pocket body, A pressing device for generating a pressing force for pressing the half-packed pack against the inner surface of the pocket body when the half-packed pack is received in the inside It comprises, providing a retention pocket of the turret type packaging machine.

According to this holding pocket, the semi-packed pack pushed into the pocket body is pressed against the inner surface of the pocket body by the pressing device, so that the semi-packed pack itself or the product in the semi-packed pack is securely held in the holding pocket. Is done.
Specifically, the pocket body includes walls spaced from each other in the radial direction of the turret of the packaging machine, and an opening formed in one wall, and the pressing device includes a leaf spring, and the leaf spring Is preferably configured to have a convex curved shape extending along the reciprocating direction of the pocket body and projecting into the pocket body through the opening.

According to this configuration, since the leaf spring has a convex curved shape toward the inside of the pocket body, a pressing force can be applied to the semi-wrapping pack in the pocket body by the leaf spring.
The leaf spring includes one end fixed to the one wall, the other end movably mounted in the reciprocating direction with respect to the one wall, and between the one end and the other end. It is preferable that the intermediate portion is immersed in the pocket body through the opening.

According to this configuration, the leaf spring as the pressing device has an intermediate portion between one end and the other end inserted into the opening of the pocket body, and the intermediate portion applies a pressing force to the semi-packaging pack in the pocket body. Add.
Further, it is preferable that the pressing device further includes setting means for setting an immersion distance of the leaf spring in the pocket body when the pocket body is in an empty state.
According to this structure, the immersion distance of a leaf | plate spring can be set with a setting means, and the pressing force added to a half packaging pack can be set to a suitable range.

Specifically, the setting means is a pair of inclined surfaces that are formed on the one wall and on which the one end and the other end of the leaf spring are respectively mounted, and are inclined in a direction downward toward the opening. It is preferable to include a slope and a pressing member that clamps the one end of the leaf spring in cooperation with the slope.
One end and the other end of the leaf spring are placed on a pair of slopes provided on one wall of the pocket body, and the leaf spring is pressed along the slope by the pressing member, so that the middle portion of the leaf spring is curved. Immerse yourself in the pocket body. At this time, the immersion distance of the leaf spring is set to a predetermined value by the slope and the pressing member.

Preferably, the pressing member is a leaf spring.
According to this structure, the setting means of the immersion distance of the leaf | plate spring as a press apparatus can be provided comparatively easily.

Since the holding pocket of the turret type packaging machine of the present invention can apply a pressing force to the half-packed pack held in the pocket body by a pressing device, it can indirectly hold the product in the half-packed pack. Therefore, when the packaging material is folded, the half-packed pack itself or the product in the half-packed pack is effectively prevented from jumping out of the holding pocket through the opening end of the holding pocket. For this reason, the holding pocket of the present invention can suppress the occurrence rate of packaging defects to a low level and can also prevent failure of the packaging machine.

Also, when the pressing device is a leaf spring, it is possible to manufacture a holding pocket that can prevent the product from popping out with a relatively simple configuration, which contributes to reducing the manufacturing cost of the entire packaging machine.

It is the schematic which showed the turret type packaging machine of one Embodiment. It is the perspective view which showed the mandrel of FIG. It is a perspective view which shows the state by which the inner packaging material was wound with respect to the mandrel of FIG. It is a perspective view which shows the state by which the outer packaging material was further wound around the outer side of the inner packaging material with respect to the mandrel of FIG. It is the perspective view which showed the detail of the holding pocket of FIG. It is a longitudinal cross-sectional view of the holding pocket of FIG. It is the perspective view shown in the state which decomposed | disassembled the holding | maintenance pocket of FIG. It is the perspective view which showed the state which is pushing in the cigarette bundle in the mandrel. It is sectional drawing which showed the state which has pushed the half packaging pack into the holding | maintenance pocket.

The packaging machine 2 in FIG. 1 wraps a bundle of filter cigarettes with an inner packaging material and an outer packaging material, and manufactures a soft pack of a filter cigarette (hereinafter simply referred to as a cigarette).
The packaging machine 2 includes a cigarette hopper 4, and a large number of cigarettes are stored in the hopper 4. The hopper 4 is continuously supplied with quality-inspected cigarettes from a cigarette manufacturing machine (not shown). Cigarettes in the hopper 4 are respectively sent from a plurality of outlets of the hopper 4 to the cigarette filling device 6, and the filling device 6 is disposed below the hopper 4.

The cigarette filling device 6 receives the cigarette delivered from the outlet of the hopper 4 as a cigarette bundle CB and projects the bundle CB toward the chain conveyor 8. Here, the cigarette bundle CB has a three-layer structure in which 20 cigarettes are stacked in order of 7, 6, and 7.
On the other hand, the chain conveyor 8 extends from the cigarette filling device 6 toward the subsequent rotary folding device 10 and includes a plurality of transport pockets 23. Each conveyance pocket 23 can receive the cigarette bundle CB protruding from the cigarette filling device 6, and the received cigarette bundle CB is sequentially conveyed toward the rotary folding device 10 by the chain conveyor 8 together with the conveyance pocket 23. .

The rotary folding device 10 includes a front turret 16 and a rear turret 19, which are arranged coaxially and adjacent to each other.
The front turret 16 has a rotating wheel and a plurality of mandrels 24 attached to the rotating wheel, and these mandrels 24 are arranged on the outer periphery of the rotating wheel at equal intervals in the circumferential direction.
As is apparent from FIG. 2, the mandrel 24 has a hollow block shape with an axis, and has

open ends

26 and 28 on both sides, respectively. The open end 26 is positioned on the chain conveyor 8 side, and the open end 28 is positioned on the rear turret 19 side.

Furthermore, the rotary folding device 10 includes a plurality of slide units 30, and these slide units 30 are respectively assigned to the mandrels 24. Specifically, the slide unit 30 is arranged coaxially with the axis of the corresponding mandrel 24. Each slide unit 30 has a plate-shaped slide head 32, and the slide head 32 has a size that can be inserted into the mandrel 24, that is, has the same cross-sectional shape as the internal space of the mandrel 24, and It can reciprocate on the axis of the mandrel 24. Specifically, the slide head 32 is connected to a drive source (not shown) of the slide unit 30 via a rod 34, and this drive source reciprocates the rod 34, that is, the slide head 32 in the axial direction of the mandrel 24. . Therefore, the slide head 32 can be inserted into the mandrel 24 and can be extracted from the mandrel 24.

The reciprocation of the slide head 32 described above is performed when the corresponding mandrel 24 is at the position A in FIG. As shown in FIG. 2, when the slide head 32 is moved toward the mandrel 24, the slide head 32 is inserted into the mandrel 24 from the open end 26 of the mandrel 24, and thereafter, as indicated by the chain line in FIG. 2. It stops at the open end 28 of the mandrel 24 as shown in FIG. At this time, the slide head 32 provides a blocking wall that temporarily closes the opening end 28. In this state, when the rotating wheel is rotated counterclockwise as viewed in FIG. 1, the mandrel 24 moves together with the slide head 32, that is, the slide unit 30 in the circumferential direction of the rotating wheel.

On the other hand, on the outside of the front turret 16, packaging

material supply devices

20 and 22 are arranged, respectively.
When the mandrel 24 is moved from the A position and positioned at the B position, the packaging material supply device 20 supplies the inner packaging material IW such as an aluminum vapor deposition sheet toward the B position mandrel 24, and the inner packaging material IW is the mandrel 24. It is positioned in the vicinity of. The inner packaging material IW is obtained by cutting a web fed from a roll into predetermined lengths. Then, in the process in which the front turret 16 is further rotated and the mandrel 24 moves from the B position toward the C position, the inner packaging material IW positioned in the vicinity of the mandrel 24 is wound around the outer periphery of the mandrel 24, as shown in FIG. The inner rectangular tube IT is formed to surround the mandrel 24 as shown in FIG. At this time, the inner rectangular tube IT has a wrap portion in which both ends of the inner packaging material IW are overlapped with each other on one outer surface 36 of the mandrel 24 and projects from the opening end 28 of the mandrel 24 toward the rear turret 19. With a protruding part. Such a protruding portion is folded toward the open end 28 of the mandrel 24, ie, the slide head 32 described above, and this folding provides a bottom for the inner rectangular tube IT. Specifically, the bottom includes a left and right side flaps, the upper and lower end flaps EF _I. Left and right side flaps are formed by folding each of both sides of the protruding portion along the outer surface of the right and left of the mandrel 24 on the slide head 32, leaving the upper and lower end flaps EF _I a projecting portion. Thereafter, the upper and lower end flaps EF _I also successively folded toward the slide head 32 are superimposed to each other in the side flaps. Since the protruding portion described above is folded with respect to the slide head 32, the left and right side flaps described above, formation and the upper and lower end flaps EF _I, folding the end flaps EF _I is carried out easily and reliably.

Thereafter, when the mandrel 24 is positioned at the position C in FIG. 1, the packaging material supply device 22 supplies the outer packaging material OW such as a paper sheet toward the mandrel 24 at the C position. It is positioned in the vicinity of. The outer packaging material OW is obtained by cutting a web fed from a roll into predetermined lengths.
When the front turret 16 is further rotated and the mandrel 24 is further moved from the C position, the outer packaging material OW is similarly wound around the outer periphery of the mandrel 24 via the inner rectangular tube IT, as shown in FIG. An outer rectangular tube OT is formed.

The outer rectangular tube OT has a protruding portion protruding from the bottom of the inner rectangular tube IT. This projecting portion is also folded into the slide head 32 through the bottom of the inner rectangular tube IT to provide a bottom for the outer rectangular tube OT, which is superimposed on the bottom of the inner rectangular tube IT. Here, the point where the outer rectangular tube OT is different from the inner rectangular tube IT, in that both ends and the outer cover material OW, the upper and lower end flaps EF _II are bonded to each other by glue. Further, as apparent from FIG. 4, the inner rectangular tube IT has a protruding portion that protrudes from the outer rectangular tube OT toward the opening end 26 side of the mandrel 24, that is, an open end portion. Has the same size as the protruding portion of the inner rectangular tube IT forming the bottom described above.

Thereafter, the slide head 32 is once pulled out from the mandrel 24 through the opening end 26 thereof.
When the rotation of the front turret 16 further proceeds and the mandrel 24 having the inner and outer rectangular tubes IT and OT reaches the position D in FIG. 1, the one transport pocket 23 of the chain conveyor 8 described above is also in the cigarette bundle CB. Along with the axis of the mandrel 24 at the D position. That is, the mandrel 24 and the transport pocket 23 are positioned adjacent to each other in the axial direction of the mandrel 24.

On the other hand, the rear turret 19 also includes a rotating wheel, which has a plurality of holding pockets 50 on its outer periphery. These holding pockets 50 are arranged at equal intervals in the circumferential direction of the rotating wheel, and each holding pocket 50 forms a pair with the corresponding mandrel 24 of the front turret 16 and is always arranged on the axis of the mandrel 24. Yes. That is, the rear turret 19 is rotated in synchronization with the front turret 16. Further, each holding pocket 50 can reciprocate on the axis of the corresponding mandrel 24, that is, can move toward and away from the mandrel 24.

Therefore, as described above, when the transport pocket 23 is positioned adjacent to the mandrel 24 in the D position, the holding pocket 50, the mandrel 24 and the transport pocket 23 are aligned on the same line, and the holding pocket 50 is the mandrel. It moves towards 24 and is positioned adjacent to the mandrel 24.

In this state, the cigarette bundle CB in the transport pocket 23 is pushed out from the transport pocket 23 toward the mandrel 24 by the slide head 32 described above. The pushed cigarette bundle CB enters the mandrel 24 and hits the bottom of the inner rectangular tube IT of the inner packaging material IW. Therefore, if the cigarette bundle CB is further pushed out, the cigarette bundle CB passes through the mandrel 24 with the inner and outer rectangular tubes IW, OW. As a result, the holding pocket 50 of the rear turret 19 receives the cigarette bundle CB together with the inner and outer rectangular tubes IW and OW, and then retracts from the mandrel 24. The cigarette bundle CB and the inner and outer rectangular tubes IW, OW are hereinafter referred to as semi-packed packs.

Thereafter, as the rear turret 19 rotates, the holding pocket 50 is transferred toward the transfer turret 12 (see FIG. 1) together with the semi-packed pack. In this transfer process, finishing folding and sealing paper are applied to the inner rectangular tube IT of the semi-packaging pack. Specifically, the open end of the inner rectangular tube IT described above is folded toward the end face of the cigarette bundle CB to provide a top wall for the inner rectangular tube IT. Maintained by pasting. At this point, the cigarette bundle CB is completely packaged by the inner and outer rectangular tubes IT, OT, and the cigarette pack is completed.

Thereafter, the cigarette pack is pushed out of the holding pocket 50 and received by the transfer turret 12. The transfer turret 12 transfers the cigarette pack toward the drying turret 15, and the cigarette pack is received from the transfer turret 12 to the drying turret 15. The drying turret 15 dries the glue used for the outer rectangular tube OT and the sealing paper in the process of transporting the cigarette pack.

Hereinafter, the holding pocket 50 described above will be described in detail.
As shown in FIG. 5, the holding pocket 50 includes a pocket body 51 having a rectangular box shape, and the pocket body 51 has an open end 51 a that opens toward the mandrel 24. More specifically, as seen in FIG. 5, the pocket body 51 has an upper wall 52, a bottom wall 54, left and

right side walls

56, 57, and an end wall 58, and the end wall 58 faces the open end 51a. The upper wall 52 faces the inner side in the radial direction of the rear turret 19, and the left and

right side walls

56 and 57 are separated from each other in the circumferential direction of the rear turret 19.

A rectangular notch 60 is formed at the upper edge of the opening end 51a. The notch 60 allows the folding member (not shown) to pass through when the inner packaging material IW, that is, the aforementioned inner rectangular tube IT is folded.
The upper wall 52 is formed by an upper portion of the rectangular upper frame 53 and a leaf spring unit 64 as a pressing device. The leaf spring unit 64 closes the central opening 62 of the upper frame 53. Part of the left and

right side walls

56 and 57 is formed by the upper frame 53.

As shown in FIG. 6, the leaf spring unit 64 is in a curved state and protrudes from the central opening 62 into the pocket body 51. A rear slope 66 and a front slope 68 are formed at the rear and front of the upper wall 52, respectively, and the

slopes

66, 68 are inclined downward toward the central opening 62. The rear slope 66 and the front slope 68 are connected to each other by the left and right flat surfaces 55.

The leaf spring unit 64 has a base end 64 a placed on the rear slope 66 and a tip 64 b placed on the front slope 68. The proximal end 64 a is fixed to the rear slope 66, but the distal end 64 b can slide on the front slope 68. The inclination of the rear slope 66 and the front slope 68 defines the maximum curvature of the leaf spring unit 64 described above, that is, the maximum protrusion distance of the leaf spring unit 64 into the pocket body 51.

If the leaf spring unit 64 protrudes into the pocket body 51, the leaf spring unit 64 is half-wrapped by the force indicated by the arrow F when the half-wrap pack SP is inserted into the pocket body 51 as described above. The pack SP is pressed against the bottom wall 54 of the pocket body 51.

More specifically, as is apparent from FIG. 7, the leaf spring unit 64 includes two leaf springs, that is, a holding spring 70 and a set spring 72. The holding spring 70 has a length from the rear slope 66 to the front slope 68. The holding spring 70 includes a base portion that is placed on the rear slope 66 and a narrow portion that extends from the base portion to the front slope 68, and the narrow portion has a width that is narrower than the base portion. Specifically, the width of the holding spring 70 is equal to or slightly narrower than the width of the central opening 62 except for the narrow portion. Therefore, the narrow portion of the presser spring 70 can be immersed in the pocket body 51 through the central opening 62. The base of the holding spring 70 has a through hole 74 and a notch 76, respectively. The through hole 74 is formed in the vicinity of one side edge of the base portion, and the notch 76 is formed in the other side edge of the base portion.

On the other hand, the set spring 72 is overlapped on the holding spring 70 over a part of the narrow portion from the base. That is, the length of the set spring 72 is shorter than that of the pressing spring 70, but the width of the set spring 72 is wider than the width of the central opening 62. For this reason, the set spring 72 is not immersed in the pocket body 51. The set spring 72 is also formed with a through hole 78 and a notch 80 at positions corresponding to the through hole 74 and the notch 76 of the holding spring 70, respectively.

When the presser spring 70 and the set spring 72 are fixed to the rear slope 66, the distance that the narrow portion of the presser spring 70 is immersed in the pocket body 51, that is, the curvature of the presser spring 70 is the rear slope 66, the front. It is determined by the slope 68 and the set spring 72. Specifically, the set spring 72 presses an overlap range extending from the base portion of the pressing spring 70 to a part of the narrow portion along the rear slope 66 to determine the curvature of the entire pressing spring 70.

As is clear from the above description, the curvature of the pressing spring 70 determines the pressing force to be applied to the above-described semi-packaging pack SP. Therefore, in order to stably hold the semi-wrapping pack SP in the pocket body 51, the curvature of the pressing spring 70 is set appropriately.
The attachment of the holding spring 70 and the set spring 72 to the upper frame 53 will be described in more detail below.
The rear slope 66 has through

holes

84a and 84b on both sides thereof. Stepped portions 86 are formed on both side edges of the rear slope 66.

On the other hand, the pocket body 51 further includes a holding member 88 for attaching the holding spring 70 and the set spring 72. The holding member 88 has leg portions 90 on both sides thereof, and these leg portions 90 can match the stepped portion 86 described above. The holding member 88 has a through hole 92 and a screw hole 94, respectively. The through hole 92 is used to insert a bolt 98 together with the through hole 84a of the upper frame 53, the holding spring 70, and the

notches

76 and 80 of the set spring 72. The bolt 98 is screwed into a rectangular lower frame 83 described later. It is. On the other hand, the screw hole 94 is used to receive the bolt 96 inserted into the through holes 84 b of the upper frame 53, the holding spring 70, and the through

holes

74 and 78 of the set spring 72.

That is, the holding member 88 is fastened to the upper frame 53 via the bolt 96 while the base portions of the holding spring 70 and the set spring 72 are sandwiched between the holding member 88 and the rear slope 66. Fastened to the lower frame 83 via the upper frame 53. That is, the bolt 98 is longer than the bolt 96 and is also used to fix the upper frame 53 to the lower frame 83.

The lower frame 83 will be described in detail. As is clear from FIG. 7, the lower frame 83 cooperates with the upper frame 53, so that the inner space of the pocket body 51, that is, the receiving space of the half-pack pack SP and the open end 51a. Form. That is, the lower frame 83 forms the bottom wall 54 of the pocket body 51 and the remaining portions of the left and

right side walls

56 and 57, respectively. Specifically, a part of the left and

right side walls

56 and 57 is formed by the

side wall parts

59 and 63 of the upper frame 53, and the remaining part of the left and

right side walls

56 and 57 is formed by the

side wall parts

65 and 67 of the lower frame 83. Is formed.

The side wall portion 67 has a groove 69 on its upper surface. The groove 69 extends in the longitudinal direction of the side wall portion 67, and the side wall portion 63 is coupled to the side wall portion 67 by fitting into the groove 69.
Two screw holes 71, 71 are formed at the bottom of the groove 69, and the aforementioned bolt 98 is screwed into one of these screw holes 71. In addition, another bolt (not shown) that penetrates the upper frame 53 is screwed into the other screw hole 71.

As is apparent from FIG. 5, a gap is secured between the side wall 59 of the upper frame 53 and the side wall 65 of the lower frame 83. This gap includes a notch 100 formed at the side edge of the opening end 51 a and a slit 102 extending in the longitudinal direction of the side wall 56. At the time of finishing folding as described above, the notch 100 and the slit 102 allow a folding guide member (not shown) to enter.

Next, the above-described end wall 58 and the surrounding structure will be described.
As is apparent from FIG. 7, the end wall 58 has a trapezoidal shape. A through hole 104 is formed in the center of the end wall 58, and the through hole 104 passes through the end wall 58 in the axial direction of the pocket body 51. As shown in FIG. 9, a rod 105 is inserted into the pocket body 51 through the through hole 104, and a discharge head 120 is attached to the tip of the rod 105. The rod 105, that is, the discharge head 120 can reciprocate in the axial direction of the pocket body 51, and provides a movable wall for the pocket body 51. Specifically, before the semi-packaging pack SP is inserted into the pocket body 51, the discharge head 120 is positioned at the stop position on the end wall 58 side, and functions as a stopper for stopping the insertion of the semi-packaging pack SP. On the other hand, if the discharge head 120 is moved from the stop position toward the opening end 26 of the pocket body 51, the discharge head 120 can discharge the cigarette pack from the pocket body 51. That is, the rod 105 and the discharge head 120 function as a discharge device that discharges the cigarette pack from the pocket body 51.

As is apparent from FIG. 7, the trapezoidal end wall 58 provides a pair of inclined surfaces 106 on the upper surface, and the semicircular grooves 108 are formed on the inclined surfaces 106, respectively. Drive rods 111 (see FIG. 9) are fitted in these grooves 108, and each drive rod 111 is connected to the end wall 58 while being sandwiched between the end wall 58 and the rod fixing member 112. Specifically, the rod fixing member 112 is fixed to the corresponding slope 106 by a bolt 114 and has a recess 110 on its inner surface. The recess 110 has a triangular shape when viewed in cross section, and forms a pinch hole in order to sandwich the drive rod 111 in cooperation with the groove 108.

On the other hand, each drive rod 111 is connected to a drive device (not shown), and this drive device can reciprocate the drive rod 111 in the axial direction of the pocket body 51, whereby the pocket body 51 is moved relative to the mandrel 24. Move forward or backward.

That is, when the mandrel 24 having the inner and outer rectangular tubes IT, OT reaches the position D in FIG. 1, the pocket body 51 moves forward toward the mandrel 24 to the advanced position, and in the vicinity of the opening end 28 of the mandrel 24. Positioned on. In this state, the pocket body 51 receives the semi-packaging pack SP. Thereafter, the pocket body 51 is retracted to the retracted position and is separated from the mandrel 24.

FIG. 8 shows a process in which the cigarette bundle CB is pushed into the mandrel 24 by the movement of the slide head 32, and FIG. 9 shows that the semi-pack pack SP is moved from the mandrel 24 to the pocket body by the further movement of the slide head 32. The process of being pushed into 51 is shown.
When the half wrapping pack SP is pushed into the pocket body 51, the half wrapping pack SP enters the pocket body 51 against the urging force of the leaf spring unit 64, that is, the holding spring 70.

The holding spring 70 extends in the pushing direction of the semi-packaging pack SP, has a convex curved shape toward the inside of the pocket body 51, and is fixed to the rear slope 66 of the upper frame 53 only at the base. Therefore, the semi-packaging pack SP enters the pocket body 51 so as to push out the holding spring 70 from the central opening 62 of the pocket body 51. At this time, the tip of the holding spring 70 is the front slope 68 of the pocket body 51. Slide on the top. Therefore, the presser spring 70 does not become a great resistance to the entry of the semi-packaging pack SP, and the semi-packaging pack SP enters smoothly into the pocket body 51.

However, when the semi-packaging pack SP is completely accommodated in the pocket body 51, the pressing spring 70 presses the semi-packaging pack SP against the bottom wall 54 of the pocket body 51 as described above. As a result, the semi-packed pack SP is stably held in the pocket body 51.

After this, the pocket body 51 moves backward with the semi-wrapping pack SP in the direction away from the mandrel 24, and returns to the original position, that is, the retracted position. At this time, as described above, since the semi-wrapping pack SP is stably held in the pocket body 51, the semi-wrapping pack SP or the filter cigarette in the semi-wrapping pack SP passes through the opening end 51a of the pocket body 51 to form the pocket body. 51 does not jump out. Thereafter, when the above-described finishing folding is performed on the semi-packaging pack SP, even if vibration is applied to the pocket body 51, the semi-packaging pack SP or the filter cigarette is surely popped out from the pocket body 51. To be prevented.

The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the pressing device can use an elastic body such as a coil spring or rubber instead of the leaf spring. Moreover, as goods, it is not limited to a cigarette bundle, Other goods, such as foods, such as confectionery, may be sufficient.

2 Packaging machine 8 Chain conveyor 10 Rotating folding device 12 Transfer turret 15 Dry turret 16 Front turret 19 Rear turret 24 Mandrel 30 Slide unit 32 Slide head 34 Rod 50 Holding pocket 51 Pocket body 51a Open end 52 Upper wall 53 Upper frame 53

Bottom wall

56, 57 Side wall 58 End wall 60 Notch 62 Central opening 64 Leaf spring unit (pressing device)
66 Rear slope 68 Front slope 70 Pressing spring 72 Set spring 83 Lower frame

Claims

A holding pocket of a turret type packaging machine, wherein the packaging machine supplies a semi-packaging pack in a state where folding of a packaging material for packaging a product is incomplete to the holding pocket, and thereafter, the holding pocket. Completing the folding of the packaging material with respect to the supplied semi-packaging pack,
The holding pocket is
A pocket body having an open end for receiving the half-pack, wherein the pocket body is reciprocable between an advanced position for receiving the half-pack and a retracted position away from the advanced position; ,
A turret-type packaging machine, comprising: a pressing device that is disposed in the pocket body and generates a pressing force that presses the half-packing pack against the inner surface of the pocket body when the half-packing pack is received in the pocket body. Holding pocket.
The pocket body includes walls spaced from each other in the radial direction of the turret of the packaging machine, and an opening formed in one wall;
2. The pressing device according to claim 1, wherein the pressing device includes a leaf spring, and the leaf spring has a convex curved shape extending in a reciprocating direction of the pocket body and protruding into the pocket body through the opening. Holding pocket for turret type packaging machine.
The leaf spring includes one end fixed to the one wall, the other end placed movably in the reciprocating direction with respect to the one wall, and an intermediate between the one end and the other end. The holding pocket of the turret type packaging machine according to claim 2, wherein the intermediate portion is immersed in the pocket body through the opening.
The holding pocket of the turret type packaging machine according to claim 3, wherein the pressing device further includes setting means for setting an immersion distance of the leaf spring in the pocket body when the pocket body is in an empty state.
The setting means includes
A pair of slopes formed on the one wall and on which the one end and the other end of the leaf spring are respectively mounted; and a pair of slopes inclined in a direction descending toward the opening;
The holding pocket of the turret type packaging machine according to claim 4, further comprising a pressing member that holds the one end of the leaf spring in cooperation with the inclined surface.
The holding pocket of the turret type packaging machine according to claim 5, wherein the pressing member is a leaf spring.