CN105620828A

CN105620828A - Bag opening device of prefabricated bag packaging machine

Info

Publication number: CN105620828A
Application number: CN201610197919.3A
Authority: CN
Inventors: 黄松
Original assignee: Shanghai Soontrue Machinery Equipment Co Ltd
Current assignee: Shanghai Songchuan Fengguan Packaging Automation Co., Ltd.
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2016-06-01
Anticipated expiration: 2036-03-31
Also published as: CN105620828B

Abstract

The invention discloses a bag opening device of a prefabricated bag packaging machine, and belongs to the technical field of packaging machines. The bag opening device is characterized by comprising a translation mechanism and a bag opening mechanism connected to the translation mechanism, wherein the bag opening mechanism is driven by the translation mechanism to move back and forth in a material operation direction. According to the bag opening device, prefabricated bags are moved in a material conveying direction by virtue of the bag opening mechanism, so that the stroke is shortened, and the packaging efficiency is improved; moreover, the bag opening mechanism is driven by the translation mechanism to stably operate without shaking, so that the bags are prevented from being damaged; and the bag opening device has the characteristics of being high in material conveying continuous degree, short in conveying and packaging stroke, and high in material conveying and packaging efficiency.

Description

The bag expanding device of pre-formed bags wrapping machine

Technical field

The present invention relates to wrapping machine technical field, particularly relate to the bag expanding device of a kind of pre-formed bags wrapping machine.

Background technology

Wrapping machine replaces tradition hand-filling, has speed fast, the feature of packaging neat appearance. The packing materials of wrapping machine can be candy, biscuit, paper handkerchief etc. Wherein, facial tissue packer is mainly used in the bagging packaging of the soft drawing type facial of all size, and facial tissue packer can be divided into big class: wrapping machine for rolled, drawing type facial wrapping machine, three-dimensional facial tissue packer, purse-type facial tissue packer etc. Take out paper packaging machine can be divided into again: reciprocating type packaging machine, three-dimensional packaging machine, rotary type wrapping machine three kinds.

In recent years, pre-formed bags wrapping machine occurred again, pre-formed bags wrapping machine is widely used in paper handkerchief packaging, is particularly suitable for tissue, flat coil paper, rolled paper and soft takes out paper, Zhong Bao and big Bao Junke. Existing pre-formed bags wrapping machine complex structure, floor space is big, and packaging efficiency is low, energy consumption height.

There is very big problem and defect in the wrapping mechanism of pre-formed bags packing materials of the prior art and technique, specific as follows:

1, pusher needs to push in pre-formed bags the material arranged from material arrangement position always, after material enters in pre-formed bags, pusher also needs to continue to push, the pre-formed bags wrapping material is pushed to enclosed mechanism place sealed by pre-formed bags opening, then pusher returns, which results in the formation of pusher propelling movement material longer, pusher motion track is longer.

2, pusher is when pushing material, owing to the formation of pusher is longer, also just causes pusher frame relatively big, thus causes whole set equipment floor space bigger.

3, pusher is when pushing material, owing to the stroke of pusher is longer, in order to packaging efficiency, generally can improve the propelling movement speed of pusher, the surging force between pusher and material can be caused relatively big, can cause the situation of material generation batch turning.

4, from packaging efficiency, the pre-formed bags wrapping machine of prior art is all that material and pre-formed bags are pushed to enclosed mechanism place and complete a stroke by pusher, then pusher is retracted into the propelling movement that material arrangement position place carries out next material, in the process, the material at material arrangement position place must wait that pusher completes that an action stroke returns could be pushed, and material needs to wait at arrangement position place, cause the decline of packaging efficiency.

5, from multiple package position, between each station of pre-formed bags wrapping mechanism of prior art, stroke is longer, and the operation at each station place is comparatively complicated, if the material at pusher propelling movement material is in time pushing away station, together with being combined in material arrangement station, material both arranged at this station place, pushed at this station place again, and for example open a bag station and both pre-formed bags is opened bag, material also enters bag at this station place, this just causes has needed multiple action on single station, and the action that just can carry out next material after all actions all complete must be waited at this station place, reduce packaging efficiency.

6, from packaging effect, existing pre-formed bags wrapping mechanism, material pushed to packing bag time, material and packing bag produce friction, are easy to cause the damage of packing bag, especially for the packaging of lumpy material, the bag of pre-formed bags can be occurred to wipe by the corner angle of lumpy material to be hung, and material enters bag under the propelling movement of pusher, under the effect of pusher, material is easy to damage the bag of pre-formed bags, causes pre-formed bags bag damaged.

If publication number is CN203997034U, publication date is the material clamping device that the Chinese patent literature on December 10th, 2014 discloses a kind of middle chartered plane material arranging apparatus, it is characterized in that: comprise conveying belt, material gripping plate, drive roll and driven roll, conveying belt is provided with multiple open holes, conveying belt is annular conveying belt, one end, two ends of conveying belt is enclosed within drive roll, the other end is enclosed within driven roll, drive roll motor drives, described material gripping plate is provided with screw, material gripping plate is fixing on the conveyor belt through screw and open holes with bolt, material gripping plate is " L " shape structure, screw is arranged on " L " shape structural corners place. the material clamping device of chartered plane material arranging apparatus during this patent documentation is disclosed, wherein the conveying belt of material gripping plate and drive roll and driven roll drive is synchronized with the movement, mass transport and clamping need to cover a stroke and continue material clamping next time again, clamping stroke is long, it is unfavorable for improving subsequent packages efficiency, and energy consumption is higher.

If publication number is CN204527813U, publication date is the clamping device that the Chinese patent literature of on 08 05th, 2015 discloses a kind of full-automatic pre-formed bags bag-feeding type package machine, it is characterised in that: comprise and regulate screw mandrel, clamping slide block, torsion spring and clamping bar; Described clamping bar is two, regulates screw mandrel between two clamping bars; Described clamping slide block is two, and clamping slide block set is connected on and regulates on screw mandrel, is connected with torsion spring below clamping slide block. The clamping device of the disclosed full-automatic pre-formed bags bag-feeding type package machine of this patent documentation, by the clamping slide block being arranged on clamping bar, material is clamped, and clamp slide block by regulating screw mandrel to control, the clamping of material needs by regulating screw mandrel to carry out regulable control, not only clamping stability is poor, and reduce material clamping speed, cause postorder pre-formed bags packaging efficiency to reduce.

Summary of the invention

The defects such as stroke between each station of pre-formed bags wrapping machine is longer in order to overcome in above-mentioned prior art in the present invention, the easy broken bag of pre-formed bags, pusher stroke length, packaging weak effect, packaging efficiency are low, the bag expanding device of a kind of pre-formed bags wrapping machine is provided, pre-formed bags of the present invention passes through bag expanding mechanism toward mass transport direction move toward one another, shorten stroke, improve packaging efficiency, and bag expanding mechanism operates steadily under the drive of translation mechanism, shake can not be produced, it is possible to prevent bag impaired; Having mass transport serialization degree height, conveying and packaging stroke is short, the feature that mass transport packaging efficiency is high.

The present invention is achieved through the following technical solutions:

The bag expanding device of pre-formed bags wrapping machine, it is characterised in that: the bag expanding mechanism comprising translation mechanism and being connected with translation mechanism, it is reciprocating that described bag expanding mechanism runs direction along material under translation mechanism effect.

The bag expanding cylinder that described bag expanding mechanism comprises the bag expanding pawl being fixedly connected on translation mechanism and drives bag expanding pawl to open or shrink, bag expanding pawl runs direction along material under translation mechanism effect and does straight reciprocating motion.

Described bag expanding pawl comprises two bag opening plates, two parallel settings of bag opening plate.

Described bag expanding pawl, by two bag expanding air cylinder driven, two bag opening plates is connected to a bag expanding cylinder, and two bag expanding air cylinder driven, two bag opening plates are close to each other in the horizontal direction or open.

Described bag opening plate opens plate by front end, middle-end opens plate and rear end is opened plate and is made of one piece, and it is vertical plate that plate is opened in front end, and the angle of vertical plate is fillet.

Described middle-end opens the cross section of plate in " U " font.

It is tilted plate that plate is opened in described rear end, and the top of plate is opened at the top that plate is opened in rear end higher than middle-end.

Described translation mechanism comprises pan carriage and drives the actuator of pan carriage.

Described pan carriage is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station.

Described pan carriage is positioned at below bag expanding mechanism.

Described pan carriage is positioned at bag expanding mechanism side.

Described pan carriage is positioned at the top of bag expanding mechanism both sides.

Described actuator is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk component.

Described translation cam member comprises translation cam and transition link, and pan carriage does straight reciprocating motion under translation cam drive.

Two one slide rails that described pan carriage comprises two slide blocks and is fixed in frame, slide block and slide rail are slidably matched.

Described pan carriage comprises upper supporting plate, lower carrier plate and roller, the lower surface of upper supporting plate is fixedly connected with smooth block, and the upper surface of lower carrier plate is connected with oblique slide block, and roller is at smooth block with tiltedly between slide block, roller coordinates with smooth block and oblique slider roll respectively, and bag expanding cylinder is fixedly connected with upper supporting plate.

Being provided with two spacing posts on described lower carrier plate, spacing post lays respectively at one end and the other end of oblique slide block.

Being provided with two limited blocks on described upper supporting plate, limited block lays respectively at one end and the other end of smooth block.

Described upper supporting plate and lower carrier plate are aluminium alloy plate.

The useful effect of the present invention is mainly manifested in following aspect:

One, the present invention, the bag expanding mechanism comprising translation mechanism and be connected with translation mechanism, it is reciprocating that described bag expanding mechanism runs direction along material under translation mechanism effect, material is while conveying, and pre-formed bags toward mass transport direction move toward one another, shortens stroke by bag expanding mechanism, improve packaging efficiency, and bag expanding mechanism operates steadily under the drive of translation mechanism, shake can not be produced, it is possible to prevent bag impaired; Having mass transport serialization degree height, conveying and packaging stroke is short, the feature that mass transport packaging efficiency is high.

Two, the present invention, the bag expanding cylinder comprising the bag expanding pawl being fixedly connected on translation mechanism and drive bag expanding pawl to open or shrink, bag expanding pawl runs direction along material under translation mechanism effect and does straight reciprocating motion, the motion of bag expanding pawl is driven by translation mechanism, material is while conveying, pre-formed bags leaves for mass transport direction move toward one another by the support of bag expanding pawl, shorten stroke, improve packaging efficiency, and bag expanding pawl operates steadily under the drive of translation mechanism, shake can not be produced, it is possible to prevent bag impaired.

Three, the present invention, bag expanding pawl comprises two bag opening plates, two parallel settings of bag opening plate, relatively prior art, the contact area of bag opening plate and pre-formed bags is bigger, whole pre-formed bags is supportted out by the bag opening plate of two parallel settings in the longitudinal direction simultaneously, pre-formed bags local pressure can not be caused uneven, prevent pre-formed bags local damage.

Four, the present invention, bag expanding pawl is by two bag expanding air cylinder driven, two bag opening plates are connected to a bag expanding cylinder, two bag expanding air cylinder driven, two bag opening plates are close to each other in the horizontal direction or open, adopt the mode of two bag expanding cylinder independent drive bag opening plates, it is beneficial to the bag expanding dynamics coordinating two bag opening plates, it is possible to more carefully and neatly done when making pre-formed bags softened, it is beneficial to and improves material bagging efficiency.

Five, the present invention, bag opening plate opens plate by front end, middle-end opens plate and rear end is opened plate and is made of one piece, and it is vertical plate that plate is opened in front end, and the angle of vertical plate is fillet, pre-formed bags is before support is opened completely, first opening plate contact pre-formed bags by front end, the angle that front end is opened plate is arranged in fillet, less crest line, pass through round-corner transition, reduce and it is hit bottom pre-formed bags, it is possible to prevent bottom pre-formed bags bad by stamp, ensure that pre-formed bags is intact.

Six, the present invention, middle-end opens the cross section of plate in " U " font, whole bag opening plate and pre-formed bags contact area maximum be that middle-end opens plate, it is arranged to " U " shape by middle-end being opened plate, when middle-end opens outer wall and the pre-formed bags contact internal walls of plate, achieve good arc transition, it is beneficial to and realizes pre-formed bags and opened by intact support, it does not have be damaged.

Seven, the present invention, it is tilted plate that plate is opened in rear end, the top of plate is opened at the top that plate is opened in rear end higher than middle-end, rear end is opened plate employing and is obliquely installed, can preventing whole bag opening plate from submerging in pre-formed bags, after material is loaded into the pre-formed bags that support is opened, bag opening plate more easily departs from pre-formed bags, not easily cause pre-formed bags mouth fold, thus it is beneficial to raising material package and carefully and neatly spends.

Eight, the present invention, translation mechanism comprises pan carriage and drives the actuator of pan carriage, and pan carriage can realize the straight reciprocating motion of bag expanding mechanism, is convenient to improve material bagging efficiency.

Nine, the present invention, pan carriage is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station, be convenient to drive bag expanding mechanism to-and-fro movement, shorten material package stroke, it is to increase packaging efficiency.

Ten, the present invention, pan carriage is positioned at below bag expanding mechanism, and pan carriage can not only drive bag expanding mechanism to do straight reciprocating motion, nor can hinder the conveying of material, and stationarity is good.

11, the present invention, pan carriage is positioned at bag expanding mechanism side, connects more reliable, it is possible to better drive the to-and-fro movement of bag expanding mechanism, it is to increase material bagging efficiency.

12, the present invention, pan carriage is positioned at the top of bag expanding mechanism both sides, it is possible to being adjusted the position of the position of pan carriage and bag expanding mechanism according to different demand, handiness is strong.

13, the present invention, actuator is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk component, it is possible to selects flexibly according to different demand, is standardized component, changes maintenance cost low.

14, the present invention, translation cam member comprises translation cam and transition link, pan carriage does straight reciprocating motion under translation cam drive, translation cam and transition link are standardized component, maintenance and replacing cost are low, pan carriage drives translation by translation cam and transition link, and stability is higher, is beneficial to and improves material package efficiency.

15, the present invention, two one slide rails that pan carriage comprises two slide blocks and is fixed in frame, slide block and slide rail are slidably matched, pan carriage adopts slip structure, by the mode being slidably matched, makes translation more smooth and easy, and slide block and slide rail cost low, safeguard change all quite convenient.

16, the present invention, pan carriage comprises upper supporting plate, lower carrier plate and roller, the lower surface of upper supporting plate is fixedly connected with smooth block, the upper surface of lower carrier plate is connected with oblique slide block, and roller is at smooth block with tiltedly between slide block, and roller coordinates with smooth block and oblique slider roll respectively, adopt the pan carriage of this kind of structure, by cooperatively interacting of smooth block and oblique slide block, it is possible to make roller realize meticulousr rolling between upper supporting plate and lower carrier plate, it is to increase translation stability.

17, the present invention, lower carrier plate is provided with two spacing posts, and spacing post lays respectively at one end and the other end of oblique slide block, and spacing post has barrier effect, by arranging spacing post, it is possible to prevent roller from skidding off oblique slide block, ensures the stability in use of pan carriage.

18, the present invention, upper supporting plate is provided with two limited blocks, and limited block lays respectively at one end and the other end of smooth block, can prevent roller from skidding off from smooth block by arranging limited block, further increase the stability in use of pan carriage.

19, the present invention, upper supporting plate and lower carrier plate are aluminium alloy plate, and upper supporting plate and lower carrier plate have good rigidity, and deformation not easily occurs bulk strength height, and then can ensure the stability of whole pan carriage, it is to increase mass transport efficiency.

Accompanying drawing explanation

Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:

Fig. 1 is the structural representation of pre-formed bags wrapping machine;

Fig. 2 is the front view of pre-formed bags packaging machine material clamping convey device;

Fig. 3 is the translation mechanism structural representation of pre-formed bags wrapping machine;

Fig. 4 is the structural representation of the rolling structure of the translation mechanism of pre-formed bags wrapping machine;

Fig. 5 is the enlarged view of bag expanding mechanism of A place in Fig. 1;

Fig. 6 is the structural representation clasping mechanism of pre-formed bags wrapping machine;

Fig. 7 is that pusher and bag expanding mechanism move along mass transport direction and pusher pusher speed is greater than the schematic diagram of bag expanding mechanism translational speed;

Fig. 8 pusher and bag expanding mechanism move toward one another schematic diagram;

Fig. 9 is pre-formed bags wrapping machine plan structure schematic diagram;

Figure 10 is pre-formed bags packaging owner's TV structure schematic diagram;

Figure 11 is the structural representation of pusher and translation mechanism;

Figure 12 is the side-looking structural representation of pusher and translation mechanism;

Figure 13 is the structural representation that e Foerderanlage clasped by the material of pre-formed bags wrapping machine;

Figure 14 is the structural representation clasping mechanism;

Figure 15 is the structural representation of the material clamping convey device of prefabricated wrapping machine;

Figure 16 is the bag expanding mechanism of pre-formed bags wrapping machine and the structural representation of translation mechanism;

Reference numeral: 1, feeding mechanism, 11, side direction bundling mechanism, 111, side direction pressure bag cylinder, 112, side direction pressing plate, 12, resistance material mechanism, 121, resistance material pawl, 122, resistance material axle; 2, pusher, 21, pushing head, 22, pusher connecting rod, 23, pusher fork, 24, pusher slide rail, 25, pusher connecting rod II, 26, pusher eccentric disk; 3, translation mechanism, 31, actuator, 32, translation fork, 34, pan carriage, 35, translation eccentric disk, 36, transition link, 341, slide block, 342, slide rail, 343, upper supporting plate, 345, lower carrier plate, 346, roller, 3431, smooth block, 3451, tiltedly slide block, 3452, spacing post, 3432, limited block; 4, clamping device, 41, gripping plate, 42, gripper cylinder; 5, bag expanding mechanism, 51, bag expanding cylinder, 52, bag opening plate, 521, front end open plate, 522, middle-end open plate, 523, rear end open plate; 6, bag openning body, 7, send bag mechanism, 8, end sealing mechanism; 9, clasping mechanism, 92, clasp base plate, 911, first clasps side plate, and the 912, the 2nd clasps side plate, 93, first clasping support plate, the 94, the 2nd clasps support plate, the 95, first strap stiffener, the 96, the 2nd strap stiffener, 97, groove, 10, station to be held, 20, station to be pushed away, 30, open a bag station.

Embodiment

Embodiment 1

The bag expanding device of pre-formed bags wrapping machine, the bag expanding mechanism 5 comprising translation mechanism 3 and being connected with translation mechanism 3, it is reciprocating that described bag expanding mechanism 5 runs direction along material under translation mechanism 3 acts on.

The bag expanding mechanism comprising translation mechanism and be connected with translation mechanism, it is reciprocating that described bag expanding mechanism runs direction along material under translation mechanism effect, material is while conveying, pre-formed bags passes through bag expanding mechanism toward mass transport direction move toward one another, shorten stroke, it is to increase packaging efficiency, and bag expanding mechanism operates steadily under the drive of translation mechanism, shake can not be produced, it is possible to prevent bag impaired; Having mass transport serialization degree height, conveying and packaging stroke is short, the feature that mass transport packaging efficiency is high.

Embodiment 2

The bag expanding cylinder 51 that described bag expanding mechanism comprises the bag expanding pawl being fixedly connected on translation mechanism 3 and drives bag expanding pawl to open or shrink, bag expanding pawl runs direction along material under translation mechanism 3 acts on and does straight reciprocating motion.

The bag expanding cylinder comprising the bag expanding pawl being fixedly connected on translation mechanism and drive bag expanding pawl to open or shrink, bag expanding pawl runs direction along material under translation mechanism effect and does straight reciprocating motion, the motion of bag expanding pawl is driven by translation mechanism, material is while conveying, and pre-formed bags leaves for mass transport direction move toward one another by the support of bag expanding pawl, shortens stroke, improve packaging efficiency, and bag expanding pawl operates steadily under the drive of translation mechanism, shake can not be produced, it is possible to prevent bag impaired.

Embodiment 3

Described bag expanding pawl comprises 52, two the parallel settings of bag opening plate 52 of two bag opening plates.

Bag expanding pawl comprises two bag opening plates, two parallel settings of bag opening plate, relatively prior art, the contact area of bag opening plate and pre-formed bags is bigger, whole pre-formed bags is supportted out by the bag opening plate of two parallel settings in the longitudinal direction simultaneously, pre-formed bags local pressure can not be caused uneven, prevent pre-formed bags local damage.

Embodiment 4

Described bag expanding pawl is driven by two bag expanding cylinders 51, two bag opening plates 52 is connected to a bag expanding cylinder 51, two bag expanding cylinders 51 and drives two bag opening plates 52 close to each other in the horizontal direction or open.

Bag expanding pawl is by two bag expanding air cylinder driven, two bag opening plates are connected to a bag expanding cylinder, two bag expanding air cylinder driven, two bag opening plates are close to each other in the horizontal direction or open, adopt the mode of two bag expanding cylinder independent drive bag opening plates, it is beneficial to the bag expanding dynamics coordinating two bag opening plates, when pre-formed bags can be made softened more carefully and neatly, raising material bagging efficiency it is beneficial to.

Embodiment 5

Described bag opening plate 52 opens plate 521 by front end, middle-end opens plate 522 and rear end is opened plate 523 and is made of one piece, and plate 521 is opened for vertical plate in front end, and the angle of vertical plate is fillet.

Described middle-end opens the cross section of plate 522 in " U " font.

Plate 523 is opened for tilted plate in described rear end, and the top of plate 522 is opened at the top that plate 523 is opened in rear end higher than middle-end.

Bag opening plate opens plate by front end, middle-end opens plate and rear end is opened plate and is made of one piece, it is vertical plate that plate is opened in front end, the angle of vertical plate is fillet, and pre-formed bags, before support is opened completely, first opens plate contact pre-formed bags by front end, the angle that front end is opened plate arranges in fillet, less crest line, by round-corner transition, reduces and is hit bottom pre-formed bags, can prevent bottom pre-formed bags bad by stamp, ensure that pre-formed bags is intact. Middle-end opens the cross section of plate in " U " font, whole bag opening plate and pre-formed bags contact area maximum be that middle-end opens plate, it is arranged to " U " shape by middle-end being opened plate, when middle-end opens outer wall and the pre-formed bags contact internal walls of plate, achieve good arc transition, it is beneficial to and realizes pre-formed bags and opened by intact support, it does not have be damaged. It is tilted plate that plate is opened in rear end, the top of plate is opened at the top that plate is opened in rear end higher than middle-end, rear end is opened plate employing and is obliquely installed, can prevent whole bag opening plate from submerging in pre-formed bags, after material is loaded into the pre-formed bags that support is opened, bag opening plate more easily departs from pre-formed bags, not easily causes pre-formed bags mouth fold, thus is beneficial to raising material package and carefully and neatly spends.

Embodiment 6

Described middle-end opens the cross section of plate 522 in " U " font.

Described translation mechanism comprises pan carriage 34 and drives the actuator 31 of pan carriage 34.

Translation mechanism comprises pan carriage and drives the actuator of pan carriage, and pan carriage can realize the straight reciprocating motion of bag expanding mechanism, is convenient to improve material bagging efficiency.

Embodiment 7

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station.

Described pan carriage 34 is positioned at below bag expanding mechanism.

Pan carriage is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station, be convenient to drive bag expanding mechanism to-and-fro movement, shorten material package stroke, it is to increase packaging efficiency. Pan carriage is positioned at below bag expanding mechanism, and pan carriage can not only drive bag expanding mechanism to do straight reciprocating motion, nor can hinder the conveying of material, and stationarity is good.

Embodiment 8

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is positioned at bag expanding mechanism side.

Pan carriage is positioned at bag expanding mechanism side, connects more reliable, it is possible to better drive the to-and-fro movement of bag expanding mechanism, it is to increase material bagging efficiency.

Embodiment 9

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is positioned at the top of bag expanding mechanism both sides.

Pan carriage is positioned at the top of bag expanding mechanism both sides, it is possible to being adjusted the position of the position of pan carriage and bag expanding mechanism according to different demand, handiness is strong.

Embodiment 10

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is positioned at below bag expanding mechanism.

Described actuator 31 is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk component.

Actuator is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk component, it is possible to selects flexibly according to different demand, is standardized component, changes maintenance cost low.

Embodiment 11

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is positioned at below bag expanding mechanism.

Described actuator 31 is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk component. Described translation cam member comprises translation cam and transition link, and pan carriage 34 is driven at translation cam

Straight reciprocating motion is done under dynamic.

Translation cam member comprises translation cam and transition link, pan carriage does straight reciprocating motion under translation cam drive, translation cam and transition link are standardized component, maintenance and replacing cost are low, pan carriage drives translation by translation cam and transition link, stability is higher, is beneficial to and improves material package efficiency.

Embodiment 12

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is positioned at below bag expanding mechanism.

Straight reciprocating motion is done under dynamic.

Two one slide rails 342 that described pan carriage 34 comprises two slide blocks 341 and is fixed in frame, slide block 341 and slide rail 342 are slidably matched.

Pan carriage comprises two slide blocks and two one slide rails that are fixed in frame, and slide block and slide rail are slidably matched, and pan carriage adopts slip structure, by the mode being slidably matched, makes translation more smooth and easy, and slide block and slide rail cost low, safeguard that replacing is all quite convenient.

Embodiment 13

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is positioned at below bag expanding mechanism.

Straight reciprocating motion is done under dynamic.

Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates, and bag expanding cylinder is fixedly connected with upper supporting plate 343.

Pan carriage comprises upper supporting plate, lower carrier plate and roller, the lower surface of upper supporting plate is fixedly connected with smooth block, the upper surface of lower carrier plate is connected with oblique slide block, roller is at smooth block with tiltedly between slide block, roller coordinates with smooth block and oblique slider roll respectively, adopts the pan carriage of this kind of structure, by cooperatively interacting of smooth block and oblique slide block, the roller can be made, it is to increase translation stability to realize meticulousr rolling between upper supporting plate and lower carrier plate.

Embodiment 14

Described middle-end opens the cross section of plate 522 in " U " font.

Described pan carriage 34 is positioned at below bag expanding mechanism.

Straight reciprocating motion is done under dynamic.

Being provided with two spacing posts 3452 on described lower carrier plate 345, spacing post 3452 lays respectively at one end and the other end of oblique slide block 3451.

Being provided with two limited blocks 3432 on described upper supporting plate 343, limited block 3432 lays respectively at one end and the other end of smooth block 3431.

Described upper supporting plate 343 and lower carrier plate 345 are aluminium alloy plate.

Being provided with two spacing posts on lower carrier plate, spacing post lays respectively at one end and the other end of oblique slide block, and spacing post has barrier effect, by arranging spacing post, it is possible to prevent roller from skidding off oblique slide block, ensures the stability in use of pan carriage.

Being provided with two limited blocks on upper supporting plate, limited block lays respectively at one end and the other end of smooth block, can prevent roller from skidding off from smooth block by arranging limited block, further increase the stability in use of pan carriage.

Upper supporting plate and lower carrier plate are aluminium alloy plate, and upper supporting plate and lower carrier plate have good rigidity, and deformation not easily occurs bulk strength height, and then can ensure the stability of whole pan carriage, it is to increase mass transport efficiency.

When bag expanding device is used for pre-formed bags wrapping machine, it is possible to material is clamped to the position of bag expanding mechanism in bag expanding device by the clamping device of pre-formed bags wrapping machine, and pre-formed bags is opened by bag expanding mechanism, and material is admitted in pre-formed bags. Can also moving on station to be pushed away by bag expanding mechanism by the translation mechanism of pre-formed bags wrapping machine, the material being clamped on station to be pushed away to clamping device is feeded.

Bag expanding device is equally applicable to the structure of traditional conveying belt, conveying belt by mass transport to, on station to be pushed away, by translation mechanism, bag expanding mechanism being moved on station to be pushed away, material is feeded.

Embodiment 15

The technical scheme of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: with reference to Figure of description 1-5, present embodiment discloses a kind of pre-formed bags wrapping machine, at station 10 to be held with open and be provided with clamping convey device between bag station 30, clamping convey device comprises clamping device 4 and translation mechanism 3, and translation mechanism 3 drives clamping device 4 to clamp throughput direction to-and-fro movement along material. Clamping device 4 is arranged on station 10 to be held and opens between bag station 30, for the clamping of the material at station 10 place to be held is delivered to station 20 to be pushed away. Pre-formed bags wrapping machine also comprises bag expanding mechanism 5, and bag expanding mechanism 5 is arranged on clamping device 4 front, for opening the pre-formed bags being delivered to out bag station 30. Bag expanding mechanism 5 clamps throughput direction to-and-fro movement along material under the drive of translation mechanism 3; Pre-formed bags wrapping machine also comprises pusher 2, for pushing in pre-formed bags by material from station 20 to be pushed away; And pre-formed bags is pushed to predetermined position; While pusher 2 pushes material, pre-formed bags under the effect of bag expanding mechanism 5 with material move toward one another. The pre-formed bags wrapping machine of the present embodiment also comprises feeding mechanism 1 and send bag mechanism 7; Feeding mechanism 1, for by mass transport extremely station 10 to be held; Send bag mechanism 7, for pre-formed bags being delivered to out bag station 30;

Translation mechanism 3 comprises actuator 31, the pan carriage 34 being connected with actuator 31, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on; Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, and roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates. Being provided with two spacing posts 3452 on described lower carrier plate 345, spacing post 3452 lays respectively at one end and the other end of oblique slide block 3451. Being provided with two limited blocks 3432 on described upper supporting plate 343, limited block 3432 lays respectively at one end and the other end of smooth block 3431. Described upper supporting plate 343 and lower carrier plate 345 are aluminium alloy plate. Described pan carriage 34 is positioned at below the clamping device 4 of pre-formed bags wrapping machine; Or described pan carriage 34 is positioned at clamping device 4 side of pre-formed bags wrapping machine; Or described pan carriage 34 is positioned at above the both sides of clamping device 4 of pre-formed bags wrapping machine;

Clamping device 4 and bag expanding mechanism 5 are fixedly installed in the pan carriage 34 of translation mechanism 3 respectively, and the driving pan carriage 34 at the actuator 31 of translation mechanism 3 drives clamping device 4 and bag expanding mechanism 5 to-and-fro movement;

Described clamping device 4 comprises two gripping plates 41 and 42, two the parallel settings of gripping plate 41 of two gripper cylinders; Being connected to a gripper cylinder 42, two gripper cylinders 42 on two gripping plates 41 drives two gripping plates 41 close to each other in the horizontal direction or separately;

Described bag expanding mechanism 5 comprises two bag opening plates 52 and two bag expanding cylinders 51, two parallel settings of bag opening plate 52, being connected to a bag expanding cylinder 51, two bag expanding cylinders 51 on two bag opening plates 52 drives two bag opening plates 52 close to each other in the horizontal direction or open;

Being provided with side direction bundling mechanism 11 and resistance material mechanism 12 in described feeding mechanism 1, described side direction bundling mechanism 11 is arranged on feeding mechanism 1 side, and described resistance material mechanism 12 is arranged on above feeding mechanism 1; Described side direction bundling mechanism 11 comprises side direction pressing plate 112 and side direction pressure bag cylinder 111, and side direction pressing plate 112 is fixed on side direction pressure bag cylinder 111; Described resistance material mechanism 12 comprises resistance material axle 122 and resistance material pawl 121, and described resistance material pawl 121 is arranged on resistance material axle 122, and resistance material axle 122 is arranged on above feeding mechanism 1, and resistance material axle 122 drives resistance material pawl 121 to rotate;

Described station to be held 10 refers to that material is delivered to feeding mechanism 1 tail end by feeding mechanism 1 and also stops in the position of feeding mechanism 1 tail end; The position of station 10 to be held can also be arrange platform to be held at feeding mechanism 1 tail end, and material is delivered on platform to be held by feeding mechanism 1, and clamping device 4 clamps material to clamping platform; The position of described clamping device 4 in time pushing away station 20 and refer to clamping device 4 and bag expanding mechanism 5 bag expanding mechanism 5 stretches in pre-formed bags under the drive of translation mechanism 3; Described bag station 30 of opening refers to the position that pre-formed bags is sent bag mechanism 7 to be delivered to bag openning body 6.

Embodiment 16

The technical scheme of the Packaging Method of the pre-formed bags of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: present embodiment discloses the Packaging Method of the pre-formed bags of pre-formed bags wrapping machine,

Pre-formed bags is transported to out bag station 30 place, is opened and is enclosed within the bag expanding mechanism 5 of prefabricated wrapping machine opening bag station 30 pre-formed bags;

Pre-formed bags is along with the bag expanding mechanism 5 of pre-formed bags wrapping machine and material move toward one another;

In the process of pre-formed bags and material move toward one another, under the effect of the pusher 2 of pre-formed bags wrapping machine, the material that pusher 2 pushes is wrapped by pre-formed bags, and under the effect of pusher 2, the pre-formed bags after parcel material is pushed out;

The mode of movement of material can adopt mode of movement of the prior art in the present embodiment, and first material is arranged then pusher and is pushed to by the material arranged in the pre-formed bags with material move toward one another;

Pre-formed bags is opened and specifically refers to opening bag station 30: the bag mouth of pre-formed bags is opened by the bag openning body 6 opening the pre-formed bags wrapping machine that bag station 30 place is arranged;

Pre-formed bags is enclosed within the bag expanding mechanism 5 of prefabricated wrapping machine and refers to: the bag expanding mechanism 5 of pre-formed bags wrapping machine stretches in pre-formed bags under the drive of the translation mechanism 3 being arranged on below bag expanding mechanism 5, and opens bag expanding mechanism 5 and make pre-formed bags be enclosed within bag expanding mechanism 5;

The bag expanding mechanism 5 of pre-formed bags wrapping machine moves along the opposite direction in material feeding direction and specifically refers to: after pre-formed bags is enclosed within bag expanding mechanism 5, and the translation mechanism 3 below bag expanding mechanism 5 drives bag expanding mechanism 5 and the pre-formed bags that is enclosed within bag expanding mechanism 5 to move along the opposite direction in material feeding direction;

The material that pusher 2 pushes is wrapped and specifically refers to by pre-formed bags: when pre-formed bags under the drive of translation mechanism 3, move by opposite direction, pusher 2 pushed forward material, and pushes in pre-formed bags by material, forms pre-formed bags to the parcel of material;

Translation mechanism 3 comprises actuator 31, the pan carriage 34 being connected with actuator 31, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on; Described bag expanding mechanism 5 is fixedly installed in pan carriage 34, and the driving pan carriage 34 at actuator 31 drives bag expanding mechanism 5 to-and-fro movement;

Described bag expanding mechanism 5 comprises two bag opening plates 52 and two bag expanding cylinders 51, two parallel settings of bag opening plate 52, being connected to a bag expanding cylinder 51, two bag expanding cylinders 51 on two bag opening plates 52 drives two bag opening plates 52 close to each other in the horizontal direction or open; Described bag opening plate 52 opens plate 521 by front end, middle-end opens plate 522 and rear end is opened plate 523 and is made of one piece, and plate 521 is opened for vertical plate in front end, and the angle of vertical plate is fillet; Described middle-end opens the cross section of plate 522 in " U " font; Plate 523 is opened for tilted plate in described rear end, and the top of plate 522 is opened at the top that plate 523 is opened in rear end higher than middle-end;

Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, and roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates. Being provided with two spacing posts 3452 on described lower carrier plate 345, spacing post 3452 lays respectively at one end and the other end of oblique slide block 3451. Being provided with two limited blocks 3432 on described upper supporting plate 343, limited block 3432 lays respectively at one end and the other end of smooth block 3431. Described upper supporting plate 343 and lower carrier plate 345 are aluminium alloy plate. Described pan carriage 34 is positioned at below the bag expanding mechanism 5 of pre-formed bags wrapping machine; Or described pan carriage 34 is positioned at bag expanding mechanism 5 side of pre-formed bags wrapping machine; Or described pan carriage 34 is positioned at above the both sides of bag expanding mechanism 5 of pre-formed bags wrapping machine.

Embodiment 17

The technical scheme of the material conveying method of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: present embodiment discloses the material conveying method of pre-formed bags wrapping machine, comprises the following steps:

A, material are clasped along the opening direction of pre-formed bags or clamped to be transported on station to be pushed away; Station to be pushed away is provided with pusher 2;

After b, the upper and lower both sides of pre-formed bags bag mouth are opened, bag expanding mechanism 5 stretches in pre-formed bags, is opened the left and right sides of pre-formed bags bag mouth;

C, pusher 2 push material, and pre-formed bags forms move toward one another at bag expanding mechanism 5 move under influence, material with the pre-formed bags opened, and material is pushed in pre-formed bags;

D, material arrive bottom pre-formed bags, and pusher 2 continues to push, and pre-formed bags departs from bag expanding mechanism 5, and material companion pre-formed bags is to predetermined position;

E, next material are according to above-mentioned steps circulation conveying;

In described step a, mechanism 9 is clasped in employing or material is clasped or clamps by clamping device 4;

In described step a, the position of clamping device 4 in time pushing away station and refer to clamping device 4 and bag expanding mechanism 5 bag expanding mechanism 5 stretches in pre-formed bags under the drive of translation mechanism 3;

The described mechanism 9 that clasps comprises and first clasps side plate 911, the 2nd for what clasp material and clasp side plate 912 and clasp base plate 92, first clasps side plate 911 is connected base plate 92 side with clasping, 2nd clasps side plate 912 is connected another side of base plate 92 with clasping, and clasps base plate 92 perpendicular with the falling direction of material;

Described first clasps side plate 911 and the 2nd clasps side plate 912 and is parallel to each other to be arranged in and clasps on base plate 92;

Described clasping is connected with pan carriage 34 and the actuator 31 of driving pan carriage 34 below mechanism 9, clasp base plate 92 and be fixed in pan carriage 34;

Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates, and clasps base plate 92 and is fixedly connected with upper supporting plate 343;

Being provided with two spacing posts 3452 on described lower carrier plate 345, spacing post 3452 lays respectively at one end and the other end of oblique slide block 3451;

Being provided with two limited blocks 3432 on described upper supporting plate 343, limited block 3432 lays respectively at one end and the other end of smooth block 3431;

Described upper supporting plate 343 and lower carrier plate 345 are aluminium alloy plate;

Described clamping device 4 comprises 41, two the parallel settings of gripping plate 41 of two gripping plates;

Described clamping device 4 is driven by gripper cylinder 42, and gripper cylinder 42 is two, two gripping plates 41 is connected to a gripper cylinder 42, two gripper cylinders 42 and drives two gripping plates 41 close to each other in the horizontal direction or separately;

In described step c, material and pre-formed bags form move toward one another and refer to and stretch in pre-formed bags by bag expanding mechanism 5, bag expanding mechanism 5 under the drive of translation mechanism together with pre-formed bags and material move toward one another;

The bag expanding cylinder 51 that described bag expanding mechanism 5 comprises the bag expanding pawl being fixedly connected in pan carriage 34 and drives bag expanding pawl to open or shrink, bag expanding pawl runs direction along material under pan carriage 34 acts on and does straight reciprocating motion;

Described bag expanding pawl comprises 52, two the parallel settings of bag opening plate 52 of two bag opening plates;

Described bag expanding pawl is driven by two bag expanding cylinders 51, two bag opening plates 52 is connected to a bag expanding cylinder 51, two bag expanding cylinders 51 and drives two bag opening plates 52 close to each other in the horizontal direction or open;

Described bag opening plate 52 opens plate 521 by front end, middle-end opens plate 522 and rear end is opened plate 523 and is made of one piece, and plate 521 is opened for vertical plate in front end, and the angle of vertical plate is fillet;

Described middle-end opens the cross section of plate 522 in " U " font;

Bag opening plate opens plate by front end, middle-end opens plate and rear end is opened plate and is made of one piece, it is vertical plate that plate is opened in front end, the angle of vertical plate is fillet, and pre-formed bags, before opening completely, first opens plate contact pre-formed bags by front end, the angle that front end is opened plate arranges in fillet, less crest line, by round-corner transition, reduces and is hit bottom pre-formed bags, can prevent bottom pre-formed bags bad by stamp, ensure that pre-formed bags is intact.

Middle-end opens the cross section of plate in " U " font, whole bag opening plate and pre-formed bags contact area maximum be that middle-end opens plate, it is arranged to " U " shape by middle-end being opened plate, when middle-end opens outer wall and the pre-formed bags contact internal walls of plate, achieve good arc transition, it is beneficial to and realizes pre-formed bags and opened by intact, it does not have be damaged.

It is tilted plate that plate is opened in rear end, the top of plate is opened at the top that plate is opened in rear end higher than middle-end, rear end is opened plate employing and is obliquely installed, can prevent whole bag opening plate from submerging in pre-formed bags, be loaded into the pre-formed bags opened when material after, bag opening plate more easily departs from pre-formed bags, not easily causes pre-formed bags mouth fold, thus is beneficial to raising material package and carefully and neatly spends.

Embodiment 18

The technical scheme of the Controlling System of a kind of pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: present embodiment discloses the Controlling System of a kind of pre-formed bags wrapping machine, comprise feeding mechanism 1, pusher 2, bag expanding mechanism 5, bag openning body 6 and send bag mechanism 7, also comprise clamping device 4 and translation mechanism 3;

Feeding mechanism 1 is by mass transport extremely station 10 place to be held;

The material clamping being delivered to station 10 place to be held is delivered to station 20 place to be pushed away by clamping device 4 under the drive of translation mechanism 3;

While feeding mechanism 1 or clamping device 4 action, pre-formed bags is sent bag mechanism 7 to be delivered to out bag station 30 place, and the bag mouth of pre-formed bags is opened by bag openning body 6;

While material clamping is delivered to station 20 to be pushed away, bag expanding mechanism 5 stretches in pre-formed bags and opens pre-formed bags, and pusher 2 moves to station 20 to be pushed away;

The material of pusher 2 pushed forward station 20 to be pushed away, clamping device 4 moves to station 10 to be held under the drive of translation mechanism 3, carrying out the holding action of next material, meanwhile, bag expanding mechanism 5 moves with the opposite direction of the pre-formed bags opened along the pushed direction of material;

Under the propelling movement of pusher 2, material is pushed in pre-formed bags, and continues pushed forward, and the pre-formed bags of parcel material is pushed to predetermined position;

Described clamping device 4 is arranged on station 10 to be held and opens between bag station 30, for the clamping of the material at station 10 place to be held is delivered to station 20 to be pushed away; Described bag expanding mechanism 5 is arranged on clamping device 4 front, for opening the pre-formed bags being delivered to out bag station 30 place; Described bag expanding mechanism 5 clamps throughput direction to-and-fro movement along material under the drive of translation mechanism 3; Feeding mechanism 1, for by mass transport extremely station 10 to be held; Send bag mechanism 7, for pre-formed bags being delivered to out bag station 30; Described pusher 2, for pushing in pre-formed bags by material from station 20 to be pushed away; And pre-formed bags is pushed to predetermined position;

Described clamping device 4 comprises two gripping plates 41 and 42, two the parallel settings of gripping plate 41 of two gripper cylinders; Being connected to a gripper cylinder 42, two gripper cylinders 42 on two gripping plates 41 drives two gripping plates 41 close to each other in the horizontal direction or separately; Described bag expanding mechanism 5 comprises two bag opening plates 52 and two bag expanding cylinders 51, two parallel settings of bag opening plate 52, being connected to a bag expanding cylinder 51, two bag expanding cylinders 51 on two bag opening plates 52 drives two bag opening plates 52 close to each other in the horizontal direction or open;

Described translation mechanism 3 comprises actuator 31, the pan carriage 34 being connected with actuator 31, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on; Described actuator 31 is cam member, pneumatic cylinder or hydro-cylinder; Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, and roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates; Being provided with two spacing posts 3452 on described lower carrier plate 345, spacing post 3452 lays respectively at one end and the other end of oblique slide block 3451; Being provided with two limited blocks 3432 on described upper supporting plate 343, limited block 3432 lays respectively at one end and the other end of smooth block 3431; Described upper supporting plate 343 and lower carrier plate 345 are aluminium alloy plate; Described pan carriage 34 is positioned at below the clamping device 4 of pre-formed bags wrapping machine; Or described pan carriage 34 is positioned at clamping device 4 side of pre-formed bags wrapping machine; Or described pan carriage 34 is positioned at the top of both sides of clamping device 4 of pre-formed bags wrapping machine;

Described station to be held 10 refers to that material is delivered to feeding mechanism 1 tail end by feeding mechanism 1 and also stops in the position of feeding mechanism 1 tail end; The position of described clamping device 4 in time pushing away station 20 and refer to clamping device 4 and bag expanding mechanism 5 bag expanding mechanism 5 stretches in pre-formed bags under the drive of translation mechanism 3; Described bag station 30 of opening refers to the position that pre-formed bags is sent bag mechanism 7 to be delivered to bag openning body 6.

Embodiment 19

The technical scheme of the packaging method of material of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: the packaging method of material of pre-formed bags wrapping machine, comprises the following steps:

Material clamps or clasps, pre-formed bags bag expanding, material push and the de-bag of pre-formed bags, wherein:

Described material clamping or clasp, refer to material clamping device 4 or clasp mechanism 9 effect under clamping or clasp to station to be pushed away;

Described pre-formed bags bag expanding: refer to that pre-formed bags is under the effect of bag expanding mechanism 5, the stretching-bag mouth left and right sides;

Described material pushes, and refers at material under the effect of pusher 2, and material is to the motion of pre-formed bags bag mouth direction, and to pre-formed bags, material is continued to push with pre-formed bags;

Pre-formed bags takes off bag: refer to after bottom material to pre-formed bags, continues to push through pusher 2 and departs from bag expanding mechanism 5;

Also comprising pre-formed bags reach: described pre-formed bags reach refers under the effect of bag expanding mechanism 5, pre-formed bags pushes the opposite direction reach in direction towards material;

Also comprise encapsulation: described encapsulation refers under the effect of end sealing mechanism 8, the bag mouth of pre-formed bags is encapsulated;

Described material pushes and refers to that pusher 2 and bag expanding mechanism 5 are to the motion of pre-formed bags bag mouth direction, and the pusher speed of pusher 2 is greater than the translational speed of bag expanding mechanism 5;

Refer to clasp mechanism 9 and bag expanding mechanism 5 clasps the position of mechanism 9 when bag expanding mechanism 5 stretches in pre-formed bags under the drive of translation mechanism 3 wait pushing away station;

The described mechanism 9 that clasps comprises and first clasps side plate 911, the 2nd for what clasp material and clasp side plate 912 and clasp base plate 92, first clasps side plate 911 is connected base plate 92 side with clasping, 2nd clasps side plate 912 is connected another side of base plate 92 with clasping, and clasps base plate 92 and is horizontally disposed with;

Clasp mechanism 9 to-and-fro movement in the horizontal direction under the driving effect of the translation mechanism 3 of pre-formed bags wrapping machine;

Described translation mechanism 3 comprises pan carriage 34 and drives the actuator 31 of pan carriage 34;

Described base plate 92 of clasping is fixed in pan carriage 34;

Described middle-end opens the cross section of plate 522 in " U " font;

Embodiment 20

The technical scheme of the wrapping machine of the employing pre-formed bags packaging that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: present embodiment discloses a kind of wrapping machine adopting pre-formed bags to pack, comprise bag expanding mechanism 5, also comprise translation mechanism 3 and the clamping device 4 of clamping conveying, described clamping device 4 is arranged on the rear of bag expanding mechanism 5, and described clamping device 4 is connected with translation mechanism 3 and clamps the direction to-and-fro movement carried under the drive of translation mechanism 3 along material; Described bag expanding mechanism 5 comprises two bag opening plates 52 and two bag expanding cylinders 51, two parallel settings of bag opening plate 52, being connected to a bag expanding cylinder 51, two bag expanding cylinders 51 on two bag opening plates 52 drives two bag opening plates 52 close to each other in the horizontal direction or open; Described bag opening plate 52 opens plate 521 by front end, middle-end opens plate 522 and rear end is opened plate 523 and is made of one piece, and plate 521 is opened for vertical plate in front end, and the angle of vertical plate is fillet; Described middle-end opens the cross section of plate 522 in " U " font; Plate 523 is opened for tilted plate in described rear end, and the top of plate 522 is opened at the top that plate 523 is opened in rear end higher than middle-end.

Described translation mechanism 3 comprises actuator 31, the pan carriage 34 being connected with actuator 31, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on; Clamping device 4 and bag expanding mechanism 5 are fixedly installed in the pan carriage 34 of translation mechanism 3 respectively, and the driving pan carriage 34 at the actuator 31 of translation mechanism 3 drives clamping device 4 and bag expanding mechanism 5 reciprocating;

Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, and roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates; Being provided with two spacing posts 3452 on described lower carrier plate 345, spacing post 3452 lays respectively at one end and the other end of oblique slide block 3451; Being provided with two limited blocks 3432 on described upper supporting plate 343, limited block 3432 lays respectively at one end and the other end of smooth block 3431; Described upper supporting plate 343 and lower carrier plate 345 are aluminium alloy plate; Described pan carriage 34 is positioned at below clamping device 4 and bag expanding mechanism 5; Or described pan carriage 34 is positioned at clamping device 4 and bag expanding mechanism 5 side; Or described pan carriage 34 is positioned at above clamping device 4 and bag expanding mechanism 5 both sides;

Described clamping device 4 comprises two gripping plates 41 and 42, two the parallel settings of gripping plate 41 of two gripper cylinders; Being connected to a gripper cylinder 42, two gripper cylinders 42 on two gripping plates 41 drives two gripping plates 41 close to each other in the horizontal direction or separately.

Embodiment 21

The technical scheme of the material transfer equipment of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: the material transfer equipment of pre-formed bags wrapping machine, comprise bag expanding mechanism 5, also comprise clamping device 4 and translation mechanism 3, described clamping device 4 is positioned at the rear of bag expanding mechanism 5, and it is reciprocating that described clamping device 4 runs direction along material under translation mechanism 3 acts on;

Clamping device 4 is driven by gripper cylinder 42;

Described bag expanding mechanism 5 and clamping device 4 are all fixed on translation mechanism 3, and it is reciprocating that bag expanding mechanism 5 and clamping device 4 run direction along material under translation mechanism effect simultaneously;

Described translation mechanism 3 is two, and bag expanding mechanism 5 is fixed on a translation mechanism 3, and clamping device 4 is fixed on another translation mechanism 3;

Described gripper cylinder 42 is two, two gripping plates 41 is connected to a gripper cylinder 42, two gripper cylinders 42 and drives two gripping plates 41 close to each other in the horizontal direction or separately;

Described bag expanding mechanism 5 comprises 52, two the parallel settings of bag opening plate 52 of two bag opening plates;

Described bag expanding mechanism 5 is driven by two bag expanding cylinders 51, two bag opening plates 52 is connected to a bag expanding cylinder 51, two bag expanding cylinders 51 and drives two bag opening plates 52 close to each other in the horizontal direction or open;

Described middle-end opens the cross section of plate 522 in " U " font;

Embodiment 22

The mass transport of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for and the technical scheme of material-pulling device can be: with reference to Figure of description 11 and 12, present embodiment discloses: the mass transport of pre-formed bags wrapping machine and material-pulling device, comprise pusher 2, also comprise translation mechanism 3, described translation mechanism 3 is arranged on the station to be held 10 of pre-formed bags wrapping machine and opens between bag station 30, and at station 10 to be held with open between bag station 30 reciprocating; Described pusher 2 is for pushing to the material of station 20 to be pushed away in pre-formed bags. Also comprising clamping or clasp the e Foerderanlage of conveying, described e Foerderanlage is connected with translation mechanism 3 and clamps or clasp the direction to-and-fro movement of conveying under the drive of translation mechanism 3 along material. Described e Foerderanlage is clamping device 4. Described clamping device 4 is for being delivered to station 20 to be pushed away by the clamping of the material of station 10 to be held; Under the drive of translation mechanism 3, clamping device 4 is reciprocating between station 10 to be held and station to be pushed away 20;

Described translation mechanism 3 comprises actuator 31, the pan carriage 34 being connected with actuator 31, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on; Described actuator 31 is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk 35 component; Described translation cam member comprises translation cam and translation fork 32, and pan carriage 34 does straight reciprocating motion under translation cam drive;

Described pusher 2 comprises pushing head 21, pusher slide rail 24 and pusher actuator; Described pushing head 21 is slidably connected on pusher slide rail 24, and described pusher actuator is connected with pushing head 21 and drives pushing head 21 back and forth to slide along pusher slide rail 24; Described pusher actuator is pusher cam member, pneumatic cylinder, hydro-cylinder or pusher eccentric disk 26 component;

Described pusher cam member comprises pusher cam, and pusher cam drive pusher fork 23 reciprocally swinging, drives pushing head 21 along pusher slide rail 24 to-and-fro movement by pusher connecting rod 22; Described pusher cam member comprises pusher eccentric disk 26 and pusher connecting rod II 25, and pusher connecting rod II 25 one end is hinged on pusher eccentric disk 26, and the other end is hinged on pusher fork 23;

Translation cam and pusher cam are separately fixed in same drive shaft;

The described mechanism 9 that clasps comprises and first clasps side plate 911, the 2nd for what clasp material and clasp side plate 912 and clasp base plate 92, first clasps side plate 911 is connected base plate 92 side with clasping, 2nd clasps side plate 912 is connected another side of base plate 92 with clasping, described in clasp base plate 92 and be horizontally disposed with.

Embodiment 23

The mass transport of a kind of pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for and the technical scheme of pusher method can be: present embodiment discloses the mass transport of a kind of pre-formed bags wrapping machine and pusher method, material is transported to station 10 to be held;

The material being transported to station 10 to be held is delivered to station 20 to be pushed away by clamping;

Being transported to station 10 to be held at material or deliver in the process of station 20 to be pushed away, pre-formed bags is transported to out bag station 30, and is opened opening bag station 30;

While the material of station 10 to be held is delivered to station 20 to be pushed away by clamping, pre-formed bags is opened;

In the process that material is pushed, pre-formed bags and material move toward one another;

Material is pushed to, in the pre-formed bags of move toward one another, the pre-formed bags being enclosed with material is pushed to predetermined position along raw material propelling movement direction;

The material being transported to station 10 to be held is delivered to station 20 to be pushed away by clamping and specifically refers to: the material at station 10 place to be held is delivered to station 20 to be pushed away by the clamping device 4 of pre-formed bags wrapping machine from material sandwich; Pre-formed bags is transported to out bag station 30 and specifically refers to: pre-formed bags is transported to out bag station 30 by the bag mechanism 7 that send of pre-formed bags wrapping machine; Pre-formed bags is opened and specifically refers to opening bag station 30 place: the bag mouth of pre-formed bags is opened by pre-formed bags by the bag openning body 6 being arranged on out bag station 30; Pre-formed bags is specifically referred to by opening: pre-formed bags is stretched in the pre-formed bags beating opened mouth by the bag expanding mechanism 5 of pre-formed bags wrapping machine, pre-formed bags is opened; Bag expanding mechanism 5 and clamping device 4 action simultaneously, when material clamping is delivered in time pushing away station 20 by clamping device 4, bag expanding mechanism 5 stretches in the pre-formed bags beating opened mouth and opens pre-formed bags

Bag expanding mechanism 5 and clamping device 4 are all arranged on a translation mechanism 3, and clamping device 4 is arranged on bag expanding mechanism 5 front, and translation mechanism 3 drives clamping device 4 and bag expanding mechanism 5 to clamp throughput direction to-and-fro movement along material; Material specifically refers to by station 20 to be pushed away is pushed: at the material of station 20 to be pushed away, by being arranged on, the pusher 2 above clamping device 4 and bag expanding mechanism 5 pushes; Specifically refer to when material moves along the opposite direction that material pushes by the pre-formed bags opened in time pushing away station 20 and be pushed: when material is pushed, translation mechanism 3 drives clamping device 4 and bag expanding mechanism 5 to move to station 10 place to be held, and the opposite direction that bag expanding mechanism 5 drives the pre-formed bags opened to push along material moves;

Described bag expanding mechanism 5 comprises two bag opening plates 52 and two bag expanding cylinders 51, two parallel settings of bag opening plate 52, being connected to a bag expanding cylinder 51, two bag expanding cylinders 51 on two bag opening plates 52 drives two bag opening plates 52 close to each other in the horizontal direction or open; Described clamping device 4 comprises two gripping plates 41 and 42, two the parallel settings of gripping plate 41 of two gripper cylinders; Being connected to a gripper cylinder 42, two gripper cylinders 42 on two gripping plates 41 drives two gripping plates 41 close to each other in the horizontal direction or separately;

Described translation mechanism 3 comprises actuator 31, the pan carriage 34 being connected with actuator 31, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on; Described clamping device 4 and bag expanding mechanism 5 are fixedly installed in pan carriage 34 respectively, and the driving pan carriage 34 at actuator 31 drives clamping device 4 and bag expanding mechanism 5 to-and-fro movement.

Embodiment 24

The technical scheme of the material clamping convey device of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: the material clamping convey device of pre-formed bags wrapping machine, the clamping device 4 comprising translation mechanism 3 and be connected with translation mechanism 3, it is reciprocating that described clamping device 4 runs direction along material under translation mechanism 3 acts on;

Also comprising gripper cylinder 42, clamping device 4 is driven by gripper cylinder 42;

Described translation mechanism comprises pan carriage 34 and drives the actuator 31 of pan carriage 34, and gripper cylinder 42 is fixed in pan carriage 34;

Described pan carriage 34 is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station;

Described pan carriage 34 is positioned at below clamping device;

Described actuator 31 is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk component;

Described translation cam member comprises translation cam and transition link, and pan carriage 34 does straight reciprocating motion under translation cam drive;

Embodiment 25

The technical scheme of the material clamping carrying method of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: the material clamping carrying method of pre-formed bags wrapping machine, comprises the following steps:

A, material are delivered on station to be held by feeding mechanism 1, are clamped by material by the both sides of clamping device 4 along material horizontal throughput direction;

B, by material clamping be delivered on station to be pushed away, pre-formed bags is opened by bag expanding mechanism 5;

C, material are pushed by pusher 2, simultaneously pre-formed bags under bag expanding mechanism 5 drives with material move toward one another;

In described step a, station to be held refers to that material is delivered to feeding mechanism 1 tail end by feeding mechanism 1 and also stops in the position of feeding mechanism 1 tail end;

In described step b, the position of clamping device 4 in time pushing away station and refer to clamping device 4 and bag expanding mechanism 5 bag expanding mechanism 5 stretches in pre-formed bags under the drive of translation mechanism 3;

In described step c, when material is pushed by pusher 2, clamping device 4 first partially opens to the identical width of bag expanding mechanism 5, more all opens;

The bag expanding mode of described bag expanding mechanism 5 is parallel bag expanding;

Described middle-end opens the cross section of plate 522 in " U " font;

Described translation mechanism 3 comprises actuator 31 and pan carriage 34, pan carriage 34 is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station, pan carriage 34 is positioned at below the clamping device 4 of pre-formed bags wrapping machine, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on;

Described translation cam member comprises translation cam and transition link, and pan carriage 34 does straight reciprocating motion under translation cam drive.

Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, and roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates.

Embodiment 26

The technical scheme of carrying method clasped by the material of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for: carrying method clasped by the material of pre-formed bags wrapping machine, specifically comprises the following steps:

A, material are delivered to by feeding mechanism 1 and are clasped above mechanism 9, and material falls into be clasped in mechanism 9;

B, clasp mechanism 9 under the effect of translation mechanism 3 material is clasped to station to be pushed away;

C, material are pushed in the pre-formed bags that bag expanding mechanism 5 opens by pushing head 21, clasp mechanism 9 and return to starting position;

In described step a, material is bulk material, and material falls into clasp and refers in mechanism 9 that clasping mechanism 9 is displaced downwardly to below feeding mechanism 1 in the effect of translation mechanism 3, and material is put into and clasped mechanism 9 by feeding mechanism 1;

In described step b, refer to clasp mechanism 9 and bag expanding mechanism 5 clasps the position of mechanism 9 when bag expanding mechanism 5 stretches in pre-formed bags under the drive of translation mechanism 3 wait pushing away station;

In described step c, by bag expanding mechanism 5, pre-formed bags being carried out bag expanding, the bag expanding mode of bag expanding mechanism 5 is parallel bag expanding;

Described translation mechanism 3 is two, and bag expanding mechanism 5 is fixed on a translation mechanism 3, clasps mechanism 9 and is fixed on another translation mechanism 3;

Described middle-end opens the cross section of plate 522 in " U " font;

Plate 523 is opened for tilted plate in described rear end, and the top of plate 522 is opened at the top that plate 523 is opened in rear end higher than middle-end;

Described translation mechanism 3 comprises actuator 31 and pan carriage 34, described pan carriage 34 is arranged on the station to be clasped of pre-formed bags wrapping machine and opens between bag station, what pan carriage 34 was positioned at pre-formed bags wrapping machine clasps below mechanism 9, and pan carriage 34 does straight reciprocating motion under actuator 31 acts on;

Embodiment 27

The technical scheme of e Foerderanlage clasped by the material of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for: e Foerderanlage clasped by the material of pre-formed bags wrapping machine, comprise translation mechanism 3 and be connected with translation mechanism 3 clasp mechanism 9, described in clasp mechanism 9 translation mechanism 3 act under along material run direction reciprocating.

The described mechanism that clasps comprises and first clasps side plate 911, the 2nd for what clasp material and clasp side plate 912 and clasp base plate 92, first clasps side plate 911 is connected base plate 92 side with clasping, 2nd clasps side plate 912 is connected another side of base plate 92 with clasping, and clasps base plate 92 and is horizontally disposed with.

Described first clasps side plate 911 and the 2nd clasps side plate 912 and is parallel to each other to be arranged in and clasps on base plate 92.

Also comprising first to clasp support plate 93 and the 2nd and clasp support plate 94, first clasps support plate 93 is connected with the first upper angled clasping side plate 911, and the 2nd clasps support plate 94 is connected with the 2nd upper angled clasping side plate 912.

Described first clasps support plate 93 and first, and to clasp the angle that side plate 911 formed be 150 degree, and the 2nd clasps support plate 94 and the 2nd, and to clasp the angle that side plate 912 formed be 150 degree.

The described bottom clasping base plate 92 is provided with length first strap stiffener 95 identical with clasping base plate 92 length and the 2nd strap stiffener 96, first strap stiffener 95 is positioned at the side clasping base plate 92, and the 2nd strap stiffener 96 is positioned at another side clasping base plate 92.

Described first strap stiffener 95 and the 2nd strap stiffener 96 all have groove 97.

Described translation mechanism comprises pan carriage 34 and drives the actuator 31 of pan carriage 34, clasps base plate 92 and is fixed in pan carriage 34.

Described pan carriage 34 is positioned at the top of the both sides clasping mechanism.

Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates, and clasps base plate 92 and is fixedly connected with upper supporting plate 343.

Embodiment 28

The technical scheme clasping mechanism of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: see Fig. 6 and Figure 14, pre-formed bags wrapping machine clasp mechanism, comprise and first clasp side plate 911, the 2nd for what clasp material and clasp side plate 912 and clasp base plate 92, first clasps side plate 911 is connected base plate 92 side with clasping, 2nd clasps side plate 912 is connected another side of base plate 92 with clasping, described in clasp base plate 92 and be horizontally disposed with.

First clasps side plate is connected base plate side with clasping, 2nd clasps side plate is connected another side of base plate with clasping, described floor level of clasping is arranged, first clasps side plate, the 2nd clasps side plate and clasps the space that base plate formed and can effectively support and clasp material, no matter it is regular material or irregular bulk material, relatively clamping device is more stable for mass transport, and material can not be caused clamping extruding, improve the transport efficiency of material, and then postorder pre-formed bags packaging efficiency is improved.

All having groove on first strap stiffener and the 2nd strap stiffener, be convenient to fix with postorder pre-formed bags wrapping machine translation mechanism, stability is better.

Embodiment 29

The technical scheme of the bag expanding mechanism of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: the bag expanding mechanism of pre-formed bags wrapping machine, the bag expanding cylinder 51 comprising the bag expanding pawl being fixedly connected on translation mechanism 3 and drive bag expanding pawl to open or shrink, described bag expanding pawl runs direction along material under translation mechanism 3 acts on and does straight reciprocating motion;

Described middle-end opens the cross section of plate 522 in " U " font;

Bag expanding pawl runs direction along material under translation mechanism effect and does straight reciprocating motion, the motion of bag expanding pawl is driven by translation mechanism, material is while conveying, pre-formed bags leaves for mass transport direction move toward one another by the support of bag expanding pawl, shorten stroke, it is to increase packaging efficiency, and bag expanding pawl operates steadily under the drive of translation mechanism, shake can not be produced, it is possible to prevent bag impaired;

It is tilted plate that plate is opened in rear end, the top of plate is opened at the top that plate is opened in rear end higher than middle-end, rear end is opened plate employing and is obliquely installed, can prevent whole bag opening plate from submerging in pre-formed bags, after material is loaded into the pre-formed bags that support is opened, bag opening plate more easily departs from pre-formed bags, not easily causes pre-formed bags mouth fold, thus is beneficial to raising material package and carefully and neatly spends.

Embodiment 30

The technical scheme of the translation mechanism of the pre-formed bags wrapping machine that the bag expanding device of the pre-formed bags wrapping machine of the present invention can be suitable for can be: the translation mechanism of pre-formed bags wrapping machine, comprise actuator 31, also comprise the pan carriage 34 being connected with actuator 31, described pan carriage 34 is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station, and described pan carriage 34 does straight reciprocating motion under actuator 31 acts on;

Described pan carriage 34 comprises upper supporting plate 343, lower carrier plate 345 and roller 346, the lower surface of upper supporting plate 343 is fixedly connected with smooth block 3431, the upper surface of lower carrier plate 345 is connected with oblique slide block 3451, roller 346 is at smooth block 3431 with tiltedly between slide block 3451, and roller 346 rolls with smooth block 3431 and oblique slide block 3451 respectively and coordinates;

Claims

1. the bag expanding device of pre-formed bags wrapping machine, it is characterised in that: the bag expanding mechanism (5) comprising translation mechanism (3) and being connected with translation mechanism (3), it is reciprocating that described bag expanding mechanism (5) runs direction along material under translation mechanism (3) acts on.

2. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterized in that: the bag expanding cylinder (51) that described bag expanding mechanism comprises the bag expanding pawl being fixedly connected on translation mechanism (3) and drives bag expanding pawl to open or shrink, bag expanding pawl runs direction along material under translation mechanism (3) acts on and does straight reciprocating motion.

3. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterised in that: described bag expanding pawl comprises two bag opening plates (52), the parallel setting of two bag opening plates (52).

4. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterized in that: described bag expanding pawl is driven by two bag expanding cylinders (51), being connected to a bag expanding cylinder (51) on two bag opening plates (52), two bag expanding cylinders (51) drive two bag opening plates (52) close to each other in the horizontal direction or open.

5. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterized in that: described bag opening plate (52) opens plate (521) by front end, middle-end opens plate (522) and rear end is opened plate (523) and is made of one piece, it is vertical plate that plate (521) is opened in front end, and the angle of vertical plate is fillet.

6. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterised in that: described middle-end opens the cross section of plate (522) in " U " font.

7. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterised in that: it is tilted plate that plate (523) is opened in described rear end, and the top of plate (522) is opened at the top that plate (523) is opened in rear end higher than middle-end.

8. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterised in that: described translation mechanism comprises pan carriage (34) and drives the actuator (31) of pan carriage (34).

9. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterised in that: described pan carriage (34) is arranged on the station to be held of pre-formed bags wrapping machine and opens between bag station.

10. the bag expanding device of pre-formed bags wrapping machine according to claim 1, it is characterised in that: described pan carriage (34) is positioned at below bag expanding mechanism.

The bag expanding device of 11. pre-formed bags wrapping machines according to claim 1, it is characterised in that: described pan carriage (34) is positioned at bag expanding mechanism side.

The bag expanding device of 12. pre-formed bags wrapping machines according to claim 1, it is characterised in that: described pan carriage (34) is positioned at the top of bag expanding mechanism both sides.

The bag expanding device of 13. pre-formed bags wrapping machines according to claim 1, it is characterised in that: described actuator (31) is for translation cam member, pneumatic cylinder, hydro-cylinder or translates eccentric disk component.

The bag expanding device of 14. pre-formed bags wrapping machines according to claim 1, it is characterised in that: described translation cam member comprises translation cam and transition link, and pan carriage (34) does straight reciprocating motion under translation cam drive.

The bag expanding device of 15. pre-formed bags wrapping machines according to claim 1, it is characterised in that: two one slide rails (342) that described pan carriage (34) comprises two slide blocks (341) and is fixed in frame, slide block (341) and slide rail (342) are slidably matched.

The bag expanding device of 16. pre-formed bags wrapping machines according to claim 1, it is characterized in that: described pan carriage (34) comprises upper supporting plate (343), lower carrier plate (345) and roller (346), the lower surface of upper supporting plate (343) is fixedly connected with smooth block (3431), the upper surface of lower carrier plate (345) is connected with oblique slide block (3451), roller (346) is positioned between smooth block (3431) and oblique slide block (3451), roller (346) rolls with smooth block (3431) and oblique slide block (3451) respectively and coordinates, bag expanding cylinder is fixedly connected with upper supporting plate (343).