CN112357209A

CN112357209A - Pillow type packaging machine

Info

Publication number: CN112357209A
Application number: CN202011194264.7A
Authority: CN
Inventors: 张文
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-12

Abstract

The invention discloses a pillow type packaging machine, which structurally comprises a machine body, a conveying device, a bag making device, a support, a packaging film paper tube mandrel, a packaging film paper guide tube, a controller and an end sealing device, wherein the machine body is connected with the conveying device, the bag making device is fixed on the conveying device, the end sealing device connected with the machine body is arranged on one side of the bag making device, the controller is arranged behind the machine body, the packaging film paper tube mandrel and the support are arranged on the controller, and the packaging film paper guide tube is arranged on the support. According to the invention, through the combined arrangement of the supporting seat, the limiting ring, the guide rod, the connecting plate, the connecting cylinder and the mounting head, the contact area between the packaging film paper and the packaging film paper guide cylinder can be reduced, so that friction can be greatly reduced, the influence of friction and heat generation of the packaging film paper on packaging can be avoided, the packaging film paper guide cylinder can adapt to the limiting of the packaging film paper with different specifications, the deviation of the packaging film paper can be prevented, and the packaging film paper guide cylinder is convenient to mount and dismount.

Description

Pillow type packaging machine

Technical Field

The invention relates to the technical field of packaging machines, in particular to a pillow type packaging machine.

Background

The pillow type packaging machine is a continuous type packaging machine which has a very strong packaging capability and can be adapted to various specifications for food and non-food packaging, and it can be used not only for the packaging of non-trademark packaging materials but also for high-speed packaging using web materials on which trademark patterns are printed in advance, but the existing pillow type packaging machine has the following drawbacks to be improved due to insufficient technical perfection:

(1) the guide cylinder of the packaging film paper is a simple cylinder, and the contact area between the packaging film paper and the guide cylinder is large, so that the friction area is large, and the packaging film paper is easy to influence packaging due to thermal friction;

(2) the packaging film paper has different widths, and is easy to deviate in transmission, so that the problems of packaging wrinkles and the like can be caused;

(3) the guide cylinder is inconvenient to assemble and disassemble.

Disclosure of Invention

The invention mainly aims to overcome the defects of the prior art and provide a pillow type packaging machine.

The invention is realized by adopting the following technical scheme: a pillow type packaging machine structurally comprises a machine body, a conveying device, a bag making device, a support, a packaging film paper tube mandrel, a packaging film paper guide tube, a controller and an end sealing device, wherein the machine body is connected with the conveying device, the bag making device is fixed on the conveying device, the end sealing device connected with the machine body is arranged on one side of the bag making device, the controller is arranged behind the machine body, the packaging film paper tube mandrel and the support are installed on the controller, and the packaging film paper guide tube is installed on the support.

Packaging film paper guide cylinder is including supporting seat, spacing ring, guide arm, connecting plate, connecting cylinder, installation head, the both ends of connecting cylinder all are equipped with supporting seat, installation head and supporting seat are for dismantling the connection, installation head and connecting cylinder are fixed connection, connecting cylinder outer wall octant position all is connected with the guide arm through the connecting plate, the guide arm is cylindric and the surface is the smooth surface, the supporting seat is connected with the support, the guide arm contacts with packaging film paper.

As a further optimization of the invention, the support seat comprises a guide strip, a clamping hole, a base, a U-shaped open slot and a rotating shaft, the center of one side surface of the base is provided with the rotating shaft which is integrally formed with the base, the other side surface of the base is provided with the U-shaped open slot, the guide strip which is integrally formed with the base is arranged in the U-shaped open slot, the base is also internally provided with two clamping holes with opposite openings, the clamping hole is communicated with the U-shaped open slot, and the rotating shaft is connected with the support through a bearing.

As a further optimization of the invention, the mounting head comprises a spring, a central shaft, an inner pneumatic tire, a base body, a connector and a fixture block, wherein the central shaft which is in a concentric structure with the base body is fixed at the center inside the base body, the central shaft is connected with one end of the spring, the connectors are respectively matched with two ends of the central shaft, the fixture block is connected with the connectors, the fixture block is matched with the base body, the inner pneumatic tire is also arranged between the fixture block and the spring, the inner pneumatic tire is matched with the connector, the pneumatic head of the inner pneumatic tire is in transition fit with the base body, the base body is fixed on the end surface of the connecting cylinder, and the fixture block can be clamped with the clamping hole.

As a further optimization of the invention, the connector comprises a notch, a circular hole, a connector body and a crescent hole, wherein the notch and the circular hole are arranged on one side of the connector body, the crescent hole is arranged on the other side of the connector body, the notch is connected with the circular hole, the spring penetrates through the crescent hole, the inner air tire penetrates through the circular hole, and one end of the connector body, far away from the crescent hole, is connected with the fixture block.

As a further optimization of the invention, one end face of the base body is provided with a guide groove, and the guide groove is matched with the guide strip.

As a further optimization of the content of the invention, the connecting cylinder comprises limiting rods, a cylinder body, the flexible tapes, connecting rods and a power assembly, wherein two limiting rods which are parallel to each other are arranged in the cylinder body, the power assembly is arranged between every two adjacent limiting rods, the power assembly is connected with the limiting rods, the two connecting rods are arranged in parallel and are movably matched with the limiting rods, one side of each connecting rod, which is far away from the power assembly, is connected with the flexible tapes, the shell of each flexible tape is fixedly connected with the cylinder body, the tail end of the cylinder body is connected with the base body, the cylinder body is connected with the guide rods through the connecting plates, and the connecting rods.

The power assembly comprises a wire wheel, a first fulcrum shaft, a driving gear, a micro motor, a second fulcrum shaft and a driven gear, wherein the micro motor is connected with the first fulcrum shaft, the first fulcrum shaft is provided with the driving gear, the driving gear is meshed with the driven gear, the driven gear is arranged on the second fulcrum shaft, the wire wheel is fixed on the first fulcrum shaft and the second fulcrum shaft, a non-elastic wire is wound on the wire wheel, and the non-elastic wire is connected with a limiting rod.

As a further optimization of the invention, the cylinder body is provided with a rectangular hole, and the connecting rod penetrates through the rectangular hole and is connected with the limiting ring.

As a further optimization of the content of the invention, the limiting ring comprises a through hole, a ring body and a movable hole, wherein the through hole and the movable hole are respectively arranged at eight equal parts of the ring body, the through hole is communicated with the movable hole, the movable hole is in clearance fit with the guide rod, the through hole is in clearance fit with the connecting plate, and the inner wall of the ring body is connected with the connecting rod.

Advantageous effects

Compared with the prior art, the invention provides a pillow type packaging machine which has the following beneficial effects:

(1) through the combined arrangement of the guide rods, the connecting plate and the connecting cylinder, an air channel is formed between every two adjacent guide rods, so that the heat dissipation of the guide rods and the packaging film paper is facilitated, the contact area between the packaging film paper and the packaging film paper guide cylinder can be reduced, the friction can be greatly reduced, and the packaging film paper is prevented from being influenced by heat caused by the friction;

(2) the output shaft of the driving micro motor rotates clockwise, so that the first support shaft drives the driving gear to rotate clockwise, the driving gear drives the driven gear to rotate anticlockwise, the second support shaft rotates anticlockwise, the wire wheels on the first support shaft and the second support shaft perform wire winding operation, tension is generated on the connecting rods, the two parallel connecting rods translate in opposite directions under the guiding limit of the limiting rods, the limiting rods generate tension on the tape of the tape measure, meanwhile, the two limiting rings parallel to each other are driven to translate in opposite directions under the rectangular holes and the connecting plates, the movable holes and the limiting guide directions of the guide rods, otherwise, the tape of the tape measure is utilized to generate tension on the connecting rods, the two parallel connecting rods are driven to translate in opposite directions under the tension of the tape, and the two limiting rings parallel to each other are driven to translate in opposite directions, the position of the limiting ring is adjusted, so that the limiting ring can limit the packaging film paper and can adapt to the packaging film paper with different widths;

(3) through the installation head under the direction cooperation of gib block and guide way, from last placing on U type open slot from bottom to bottom, through inflating towards interior gas child, make interior gas child inflation, interior gas child inflation then produces the pulling force through the connector to the spring, and produce thrust to the fixture block, make the spring can stretch, and the fixture block can be overhanging, thereby make the fixture block pass the card hole, with this realization installation head is connected with the supporting seat, through gassing to interior gas child, make the spring atress reduce to reset and produce the pulling force to the fixture block through the connector, make the fixture block break away from the card hole, break away from U type open slot through the installation head, thereby can realize the dismantlement of installation head and supporting seat, and then be convenient for realize the loading and unloading of packing film paper guide cylinder.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of a pillow type packaging machine according to the present invention.

Fig. 2 is a schematic structural diagram of the packaging film paper guide cylinder of the invention.

Fig. 3 is another structure diagram of the packaging film paper guide cylinder of the invention.

FIG. 4 is a schematic cross-sectional view of the supporting seat of the present invention.

Fig. 5 is a schematic structural view of a mounting head of the present invention.

Fig. 6 is a schematic structural diagram of the connecting head of the present invention.

Fig. 7 is a schematic cross-sectional view of a first operational state of the connector barrel of the present invention.

Fig. 8 is a schematic cross-sectional view of a second operational state of the connector barrel of the present invention.

Fig. 9 is a schematic cross-sectional view of a stop collar according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

the machine body 1, the conveying device 2, the bag making device 3, the support 4, the packaging film paper tube mandrel 5, the packaging film paper guide tube 6, the controller 7, the end sealing device 8, the support seat 101, the limiting ring 102, the guide rod 103, the connecting plate 104, the connecting tube 105, the mounting head 106, the guide strip 011, the clamping hole 012, the base 013, the U-shaped open slot 014, the rotating shaft 015, the spring 061, the central shaft 062, the inner tire 063, the base 064, the connector 065, the clamping block 066, the notch 65a, the round hole 65b, the connector body 65c, the crescent 65d, the guide slot X, the limiting rod 051, the cylinder 052, the tape 053, the connecting rod 054, the power component 055, the reel 55a, the first fulcrum shaft 55b, the driving gear 55c, the micro motor 55d, the second fulcrum shaft 55e, the driven gear 55f, the rectangular hole Y, the through hole 021, the ring 022 and the movable.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution of a pillow type packaging machine: the structure of the bag making machine comprises a machine body 1, a conveying device 2, a bag making device 3, a support 4, a packaging film paper tube mandrel 5, a packaging film paper guide tube 6, a controller 7 and an end sealing device 8, wherein the machine body 1 is connected with the conveying device 2, the bag making device 3 is fixed on the conveying device 2, the end sealing device 8 connected with the machine body 1 is arranged on one side of the bag making device 3, the controller 7 is arranged behind the machine body 1, the packaging film paper tube mandrel 5 and the support 4 are installed on the controller 7, and the packaging film paper guide tube 6 is installed on the support 4.

Referring to fig. 2-3, the packaging film paper guiding cylinder 6 includes a supporting seat 101, a limiting ring 102, a guide rod 103, a connecting plate 104, a connecting cylinder 105 and an installation head 106, the supporting seat 101 and the installation head 106 are respectively disposed at two ends of the connecting cylinder 105, the installation head 106 is detachably connected to the supporting seat 101, the installation head 106 is fixedly connected to the connecting cylinder 105, eight equal parts of the outer wall of the connecting cylinder 105 are connected to the guide rod 103 through the connecting plate 104, the guide rod 103 is cylindrical and has a smooth outer surface, the supporting seat 101 is connected to the bracket 4, the guide rod 103 contacts with the packaging film paper, and a ventilation channel is formed between two adjacent guide rods 103, so as to facilitate heat dissipation between the guide rod 103 and the packaging film paper.

The combination of the guide rod 103, the connecting plate 104 and the connecting cylinder 105 can reduce the contact area between the packaging film paper and the packaging film paper guide cylinder 6, so that the friction can be greatly reduced, and the influence of the friction and the heat energy of the packaging film paper on the packaging can be avoided.

Referring to fig. 4, the supporting seat 101 includes a guide bar 011, a clamping hole 012, a base 013, a U-shaped open slot 014, and a rotating shaft 015, the rotating shaft 015 integrally formed with the base 013 is disposed at the center of one side of the base 013, the U-shaped open slot 014 is disposed at the other side of the base 013, the guide bar 011 integrally formed with the base 013 is disposed in the U-shaped open slot 014, two clamping holes 012 with opposite openings are further disposed in the base 013, the clamping holes 012 are communicated with the U-shaped open slot 014, and the rotating shaft 015 is connected to the bracket 4 through a bearing.

Referring to fig. 3, one end surface of the substrate 064 is provided with a guide groove X, and the guide groove X is matched with the guide strip 011.

The combination of the guide strip 011 and the guide groove X makes the card hole 012 opposite to the clamping block 066, so that the clamping block 066 is clamped with the card hole 012.

Referring to fig. 5, the mounting head 106 includes a spring 061, a central shaft 062, an inner air tube 063, a base 064, a connector 065, and a clamping block 066, the central shaft 062 which is a concentric structure is fixed to the center inside the base 064, the central shaft 062 is connected to one end of the spring 061, the connectors 065 are respectively fitted to both ends of the central shaft 062, the clamping block 065 is connected to the clamping block 066, the clamping block 066 is fitted to the base 064, an inner air tube 063 is disposed between the clamping block 066 and the spring 061, the inner air tube 063 is fitted to the connector 065, an air head of the inner air tube 063 is in transition fit with the base 064, the base 064 is fixed to the end surface of the connecting cylinder 105, and the clamping block 066 can be clamped to the clamping hole 012.

The spring 061 is arranged to be tensioned to store force, and the stored force provides power for retraction and resetting of the fixture block 066.

The inner air tyre 063 is arranged to inflate when inflated inwards, and the inflation can generate thrust to the block 066 and tension to the spring 061.

Referring to fig. 6, the connector 065 includes a notch 65a, a circular hole 65b, a connector body 65c, and a crescent hole 65d, one side of the connector body 65c is provided with the notch 65a and the circular hole 65b, the other side is provided with the crescent hole 65d, the notch 65a is connected to the circular hole 65b, the spring 061 penetrates through the crescent hole 65d, the inner air tube 063 penetrates through the circular hole 65b, and one end of the connector body 65c, which is far away from the crescent hole 65d, is connected to the locking block 066.

The gap 65a is arranged to facilitate the entry of the inner air tyre 063 without air into the circular hole 65 b;

the crescent hole 65d is conveniently matched with the spring 061, so that the spring 061 is stretched under the action of the inner air tyre 063, and the clamping block 066 is retracted and reset under the tension of the spring 061 indirectly.

Example 2

Referring to fig. 7, the connecting cylinder 105 includes a limiting rod 051, a cylinder 052, a measuring tape 053, a connecting rod 054 and a power assembly 055, two limiting rods 051 parallel to each other are arranged inside the cylinder 052, the power assembly 055 is arranged between two adjacent limiting rods 051, the power assembly 055 is connected with the limiting rods 051, two connecting rods 054 are parallel to each other and movably matched with the limiting rods 051, one side of the connecting rod 054, which is far away from the power assembly 055, is connected with a measuring tape of the measuring tape 053, a housing of the measuring tape 053 is fixedly connected with the cylinder 052, the tail end of the cylinder 052 is connected with a base 064, the cylinder 052 is connected with a guide rod 103 through a connecting plate 104, the connecting rod 054 is connected with a limiting ring 102, and the connecting rod 054 is provided with a channel which is in clearance fit with the limiting rods 051.

The limiting rod 051 is arranged to guide and limit the translation of the connecting rod 054, so that the connecting rod 054 can drive the position ring 102 to translate.

The tape 053 is arranged such that the tape can pull on the connecting rod 054 to enable the connecting rod 054 to translate in the opposite direction, and when the connecting rod 054 translates in the opposite direction, the tape of the tape 053 can be pulled out by the translation of the connecting rod 054.

Referring to fig. 8, the power assembly 055 includes a reel 55a, a first support shaft 55b, a driving gear 55c, a micro-motor 55d, a second support shaft 55e, and a driven gear 55f, where the micro-motor 55d is connected to the first support shaft 55b, the driving gear 55c is installed on the first support shaft 55b, the driving gear 55c is engaged with the driven gear 55f, the driven gear 55f is installed on the second support shaft 55e, and the reels 55a are fixed on the first support shaft 55b and the second support shaft 55 e.

The line wheel 55a is wound with the elastic-free line, the elastic-free line is connected with the limiting rod 051, and based on the elasticity of the elastic-free line, tension can be generated on the connecting rod 054, so that the connecting rod 054 can be translated.

Referring to fig. 8, the cylinder 052 is formed with a rectangular hole Y, and the connecting rod 054 penetrates through the rectangular hole Y to be connected to the limit ring 102.

Referring to fig. 9, the limiting ring 102 includes a through hole 021, a ring body 022, and a movable hole 023, wherein eight equal parts of the ring body 022 are respectively provided with the through hole 021 and the movable hole 023, the through hole 021 is communicated with the movable hole 023, the movable hole 023 is in clearance fit with the guide rod 103, the through hole 021 is in clearance fit with the connecting plate 104, and the inner wall of the ring body 022 is connected with the connecting rod 054.

The working principle of the invention is as follows: the mounting head 106 is placed on the U-shaped open slot 014 from top to bottom under the guiding matching of the guide strip 011 and the guide groove X, the inward air tyre 063 is inflated, so that the inner air tyre 063 expands, the inner air tyre 063 expands to generate pulling force on the spring 061 through the connector 065 and generate pushing force on the clamping block 066, so that the spring 061 is stretched, the clamping block 066 extends outwards, and the clamping block 066 penetrates through the clamping hole 012, so that the mounting head 106 is connected with the support seat 101;

by deflating the inner air tyre 063, the spring 061 is stressed to be reduced and reset, and the connector 065 generates pulling force on the clamping block 066, so that the clamping block 066 can be separated from the clamping hole 012, and separated from the U-shaped open slot 014 through the mounting head 106, and the mounting head 106 and the supporting seat 101 can be detached;

the output shaft of the micro motor 55d is driven to rotate clockwise, so that the first support shaft 55b drives the driving gear 55c to rotate clockwise, the driving gear 55c drives the driven gear 55f to rotate anticlockwise, the second support shaft 55e rotates anticlockwise, the wire wheels 55a on the first support shaft 55b and the second support shaft 55e are wound up, tension is generated on the connecting rods 054, the two parallel connecting rods 054 are enabled to translate in opposite directions under the guiding limit of the limiting rod 051, the limiting rod 051 generates tension on the tape of the tape 053, and meanwhile, the two limiting rings 102 which are parallel to each other are driven to translate in opposite directions under the rectangular hole Y and the connecting plate 104, and the movable hole 023 and the limiting guide of the guide rod 103;

the output shaft of the driving micro motor 55d rotates counterclockwise, so that the first support shaft 55b drives the driving gear 55c to rotate counterclockwise, the driving gear 55c drives the driven gear 55f to rotate clockwise, the second support shaft 55e rotates counterclockwise, the wire wheels 55a on the first support shaft 55b and the second support shaft 55e perform wire paying-off operation, and accordingly the tension on the connecting rod 054 is released, the tape of the tape 053 generates tension on the connecting rod 054, the two parallel connecting rods 054 are driven to translate reversely by the tension of the tape, so that the two parallel limiting rings 102 are driven to perform opposite translation movement, and the position of the limiting rings 102 is adjusted, so that the limiting rings 102 can limit packaging film, and can adapt to packaging film paper with different widths.

In summary, the technical progress obtained by the invention compared with the prior art is as follows: according to the invention, through the combined arrangement of the supporting seat, the limiting ring, the guide rod, the connecting plate, the connecting cylinder and the mounting head, the contact area between the packaging film paper and the packaging film paper guide cylinder can be reduced, so that friction can be greatly reduced, the influence of friction and heat generation of the packaging film paper on packaging can be avoided, the packaging film paper guide cylinder can adapt to the limiting of the packaging film paper with different specifications, the deviation of the packaging film paper can be prevented, and the packaging film paper guide cylinder is convenient to mount and dismount.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a pillow formula packagine machine, its structure includes organism (1), conveyor (2), system bag ware (3), support (4), packaging film fiber container mandrel (5), packaging film paper guide cylinder (6), controller (7), end sealing device (8), organism (1) links to each other with conveyor (2), be fixed with system bag ware (3) on conveyor (2), system bag ware (3) one side is equipped with end sealing device (8) of being connected with organism (1), the rear of organism (1) is equipped with controller (7), install packaging film fiber container mandrel (5), support (4) on controller (7), packaging film paper guide cylinder (6) are installed to support (4), its characterized in that:

packaging film paper guide cylinder (6) is including supporting seat (101), spacing ring (102), guide arm (103), connecting plate (104), connecting cylinder (105), installation head (106), connecting cylinder (105) end is equipped with supporting seat (101), installation head (106) are for dismantling the connection with supporting seat (101), installation head (106) link firmly with connecting cylinder (105), connecting cylinder (105) link to each other with guide arm (103) through connecting plate (104), supporting seat (101) meet with support (4), guide arm (103) and packaging film paper contact.

2. A pillow packaging machine as defined in claim 1, wherein: supporting seat (101) is including guide strip (011), card hole (012), base (013), U type open slot (014), pivot (015), base (013) one side center is equipped with pivot (015), and the opposite side is equipped with U type open slot (014), be equipped with guide strip (011) in U type open slot (014), base (013) inside still be equipped with two with the communicating card hole (012) of U type open slot (014), pivot (015) are connected with support (4).

3. A pillow packaging machine as defined in claim 1, wherein: the mounting head (106) comprises a spring (061), a center shaft (062), an inner air tire (063), a base body (064), a connector (065) and a clamping block (066), the center shaft (062) is fixed to the center inside the base body (064), the center shaft (062) is connected with one end of the spring (061), the connectors (065) are matched with the two ends of the center shaft (062), the connector (065) is connected with the clamping block (066) matched with the base body (064), the base body (064) is further provided with an inner air tire (063), the base body (064) is fixed to a connecting cylinder (105), and the clamping block (066) can be clamped with a clamping hole (012).

4. A pillow packaging machine as defined in claim 3, wherein: connector (065) is including breach (65a), round hole (65b), connector body (65c), crescent moon hole (65d), connector body (65c) one side is equipped with breach (65a), round hole (65b), and the opposite side is equipped with crescent moon hole (65d), breach (65a) links to each other with round hole (65b), spring (061) run through crescent moon hole (65d), interior gas child (063) runs through in round hole (65b), connector body (65c) is connected with fixture block (066).

5. A pillow packaging machine as defined in claim 3, wherein: one end face of the base body (064) is provided with a guide groove (X) matched with the guide strip (011).

6. A pillow packaging machine as defined in claim 1, wherein: connecting cylinder (105) are including gag lever post (051), barrel (052), tape measure (053), connecting rod (054), power component (055), barrel (052) inside is equipped with two gag lever posts (051), adjacent two be equipped with power component (055) between gag lever post (051), connecting rod (054) are equipped with two and with gag lever post (051) perpendicular cooperation, connecting rod (054) one side even has tape measure (053), tape measure (053) are connected with barrel (052), the end connection in base member (064) of barrel (052), barrel (052) are connected with guide arm (103) through connecting plate (104), connecting rod (054) link in spacing ring (102).

7. The pillow packaging machine of claim 6, wherein: the power assembly (055) comprises a wire wheel (55a), a first support shaft (55b), a driving gear (55c), a micro motor (55d), a second support shaft (55e) and a driven gear (55f), wherein the micro motor (55d) is connected with the first support shaft (55b), the driving gear (55c) matched with the driven gear (55f) is installed on the first support shaft (55b), the driven gear (55f) is installed on the second support shaft (55e), the wire wheel (55a) is fixed on each of the first support shaft (55b) and the second support shaft (55e), and a non-elastic wire connected with a limiting rod (051) is wound on the wire wheel (55 a).

8. The pillow packaging machine of claim 6, wherein: rectangular hole (Y) has been seted up to barrel (052), connecting rod (054) run through rectangular hole (Y) and are connected with spacing ring (102).

9. A pillow packaging machine as claimed in claim 1 or 8, wherein: spacing ring (102) including through-hole (021), ring body (022), activity hole (023), ring body (022) are equipped with through-hole (021), activity hole (023) and guide arm (103) clearance fit, through-hole (021) and connecting plate (104) cooperation, ring body (022) are connected with connecting rod (054).