CN202279278U

CN202279278U - Automatic film cutting device

Info

Publication number: CN202279278U
Application number: CN2011202897653U
Authority: CN
Inventors: 徐汉来
Original assignee: Nongfu Spring Co Ltd
Current assignee: Nongfu Spring Co Ltd
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2012-06-20
Anticipated expiration: 2021-08-11

Abstract

The utility model relates to an automatic film cutting device for a film wrapping machine, the automatic film cutting device comprises: a driving device comprising a cylinder and a driving member, wherein, the cylinder drives the driving member to perform horizontal reciprocating motion; a stretching device comprising a stretching rod capable of rotation relative to the frame of the automatic film cutting device; a cutting knife arranged between the film wrapping machine and the stretching device, and a control circuit connected with the film wrapping machine and the cylinder, and controlling the motion of the cylinder according to the work state of the film wrapping machine.

Description

Automatically cut film device

Technical field

The utility model relates to a kind of film device of cutting automatically, specifically, the utility model relate to a kind of be used for wrapping machine cut film device automatically.

Background technology

Wrapping machine is claimed the pallet compress again, is a kind ofly to realize that mechanization twines the specialized package machine of film operation, is applicable to the packing of various pallets.Wrapping machine can be divided into pivoted arm, rotating disc type etc. according to the difference of operating mode.The product buttress of pivoted arm wrapping machine is transported to the pivot arm below through load-transfer device, realizes twining the film operation thereby the pivot arm stretch wrap film also rotates around the product buttress; The product buttress of rotating disc type wrapping machine is transported to the rotating disk place through fork truck, and the product buttress rotates and stretch wrap film realizes twining the film operation thereby rotating disk drives.In simple terms, the operating feature of pivoted arm wrapping machine is that product is motionless, and pivot arm twines film around product; The operating feature of rotating disc type wrapping machine is that product rotates, and drives to twine film winding product.

Pivoted arm wrapping machine complex structure, to move difficulty, occupied ground area big and cost is higher (general cost is more than hundreds of thousands of unit).At present, what generally use aborning is the rotating disc type wrapping machine, and it is simple in structure, move easily, the occupied ground area is little and cost is lower (about ten thousand yuan of general 3-4).

Fig. 1 a-1d has shown the operation process of rotating disc type wrapping machine.Referring to Fig. 1 a, the film joint that product buttress is transported to the rotating disk place through fork truck and will twines film is pushed down.Referring to Fig. 1 b, dial rotation drives the product buttress and rotates, and simultaneously, twines the film pre-stretching device and rises gradually will twine bottom-boot that film piles up neatly from product to its top from initial position.Referring to Fig. 1 c, behind the top that twines film to product buttress, twine the film pre-stretching device and begin to descend.Referring to Fig. 1 d, behind the bottom that twines film to product buttress once more, twine the film end of job.It should be noted that the rotating disc type wrapping machine when twining the film operation and begin, must the film joint be pressed in the below of product buttress, twine film and be entangled on the product buttress otherwise can't drive during dial rotation.

At present, the rotating disc type wrapping machine does not all have and cuts film device automatically.In history, the rotating disc type wrapping machine adopts by hand and cuts the film mode, promptly after twining the film end of job; The Forklift Worker jumps off from fork truck; The manual cut-out twined film, gets back to the product buttress that will twine film on the fork truck then and pitches out rotating disk, and the Forklift Worker jumps off from fork truck once more subsequently; The film joint pulled out place on the rotating disk, can push down the film joint so that next plate is waited the product buttress that twines film; Perhaps, this craft is cut film work and can be accomplished by the stacker, but the stacker must stop stacking work at hand, goes manual the cut-out to twine film.No matter be by the Forklift Worker, or cut the film operation by the stacker, original manual cut-out mode all wastes time and energy, and influences the whole work efficiency of packaging process.

Afterwards the film mode is cut in original craft and improve, promptly install toothed cutting knife additional on the wrapping machine side.After twining the film end of job, the product buttress that fork truck will twine film holds up reversing, will twine film and pull out one section.The fork truck turning will be twined film and will be pulled to cutter, utilize the tooth mouth of cutting knife will twine the film cut-out.Need pull out a segment distance on cutting knife, cutting off by fork truck owing to twine film, this causes the winding film very long (about 100-150 centimetre) that is drawn out, causes waste; To twine film simultaneously pulls out and needs the fork truck operation of moveing backward and turn, the action of waste fork truck; And, twined the product buttress behind the film since leave over to cut film oversize, hang over during storage in the air, cause the storage zone in a mess, influenced attractive in appearance.

Therefore, twine film waste, economical with materials, cost-cutting in order to reduce, optimize simultaneously the Forklift Worker cargo handling operation, improve operating efficiency, need provide a kind of be used for the rotating disc type wrapping machine cut film device automatically.Said cut automatically film device can the rotating disc type wrapping machine twine the film end of job after cut the film operation automatically, need not any manual intervention, simultaneously, be retained in cutting film length and can enough lack on the product buttress, reduce the waste of material that twines film.

The utility model content

The utility model cut film method and equipment automatically, make the rotating disc type wrapping machine of simple low price can realize cutting automatically film.

According to an aspect of the utility model, the utility model provide a kind of be used for wrapping machine cut film device automatically, comprising actuating device, said actuating device comprises cylinder and Transmission, the said Transmission of said air cylinder driven is done horizontal reciprocating movement; Stretching device, said stretching device comprise with respect to the rotatable stretch of the frame of cutting film device automatically; Cutting knife, said cutting knife are disposed between said wrapping machine and the said stretching device; And control circuit; Said control circuit is connected with said cylinder with said wrapping machine; And control the action of said cylinder according to the mode of operation of said wrapping machine, wherein, when said control circuit detect said wrapping machine twine the film end of job time; Said control circuit starts said cylinder; So that the said Transmission of said air cylinder driven is done horizontal reciprocating movement, said Transmission promotes said stretch rotation thus, thereby said stretch is cut off the winding film stretching on the said wrapping machine to said cutter with said winding film.

Preferably; Said Transmission comprise link to each other with the piston rod of said cylinder and by the connecting panel of said air cylinder driven be installed in the bearing on the said connecting panel; When doing horizontal reciprocating movement under the driving of said connecting panel at said cylinder, said connecting panel promotes said stretch rotation through the rolling touch of said bearing and said stretch.

Preferably, said Transmission also comprises guide rod, and said guide rod is parallel with said cylinder piston rod, and an end of said guide rod is fixed on the said connecting panel, the other end freely passes the air cylinder fixed plate that is used for fixing cylinder.

Preferably, said stretching device also comprises retracing spring and radius stay, and said retracing spring is used for after said stretch is rotated said stretch is withdrawn into the initial position of the said stretch that is limited said radius stay.

Preferably; Said Transmission is a bearing; Said bearing fixing is at the free end place of the piston rod of said cylinder, and has groove structure on the said stretch, when the said bearing of said air cylinder driven is done horizontal reciprocating movement; Said bearing rolls in said groove structure, thereby promotes said stretch rotation.

Preferably, said stretch rotatably is installed to said frame through mount pad.

Preferably; Said mount pad comprises the mount pad axle, passes the mount pad bearing of said mount pad axle, places the mount pad bearing seat of said mount pad bearing; One end of said mount pad bearing seat is fixed to the rotation axis place of said stretch, and an end of said mount pad axle is fixed on the base plate of said mount pad.

Preferably, said mount pad comprises copper sheathing and mount pad axle, a rotation axis place that is fixed to said stretch in said copper sheathing and the mount pad axle, and another in said copper sheathing and the mount pad axle is fixed on the base plate of said mount pad.

Preferably, the said film device of cutting automatically also comprises blowning installation, and said blowning installation is arranged in the winding film volume place of said wrapping machine, is used for the film joint of the winding film that cuts off is blown to the rotating disk of said wrapping machine.

Preferably; Said blowning installation comprises horizontal gas blow pipe and vertical gas blow pipe; The direction that said horizontal gas blow pipe is blown is vertical substantially with the direction that said winding film rolls out film, and the direction that said vertical gas blow pipe is blown is parallel substantially with the direction that said winding film rolls out film.

Preferably; Said control circuit comprises first normal open switch and normally closed switch, travel switch, first electromagnetic valve and second electromagnetic valve and the light eye of second normal open switch, second intermediate relay and said second intermediate relay of normal open switch, first intermediate relay and said first intermediate relay of normally closed switch, the 3rd time relay and said the 3rd time relay of normal open switch, second time relay and said second time relay of very first time relay and said very first time relay; And; Said control circuit has six shunt; Wherein: first is used for cutting membrane operations end back automatic cutout cylinder along separate routes; Said first connect the successively along separate routes normally closed switch of said second time relay, said travel switch and said first intermediate relay and first normal open switch of said first intermediate relay and the parallel connection of said travel switch; Second along separate routes is used to twine membrane operations finishes the back time-delay and connects the 4th along separate routes, said second connect said second intermediate relay along separate routes successively normally closed switch and said very first time relay; The 3rd is used to along separate routes to survey twining membrane operations and whether finishing of wrapping machine, and the said the 3rd is connected to the rotating disk frequency converter of said wrapping machine along separate routes, and parallel series has said second intermediate relay; The 4th is used for starting automatically cylinder along separate routes; And the operation of laterally blowing; The said the 4th connect along separate routes second normal open switch of said first intermediate relay, said very first time relay successively normal open switch and said first electromagnetic valve, and said second time relay and the parallel connection of said first electromagnetic valve; Whether the 5th along separate routes is used to survey the product buttress of cutting behind the film is removed, the said the 5th connect along separate routes said light eye and said the 3rd time relay; With the 6th be used for along separate routes the operation of vertically blowing automatically after the product buttress is removed, said the 6th shunt the connect normal open switch and said second electromagnetic valve of said the 3rd time relay.

Description of drawings

To by way of example and according to accompanying drawing the utility model be described in more detail hereinafter, wherein:

Fig. 1 a-1d shows the membrane process that twines of prior art transfer disc type wrapping machine;

Fig. 2 is the block diagram of cutting film device automatically according to the utility model;

Fig. 3 is the birds-eye view of cutting film device automatically according to the utility model;

Fig. 4 is the front view according to the actuating device of cutting film device automatically of the utility model;

Fig. 5 a-5b is the front view and the section-drawing of air cylinder fixed plate in the actuating device;

Fig. 6 a-6b is the front view and the section-drawing of cylinder base plate in the actuating device;

Fig. 7 a-7b is the front view and the lateral plan of guide rod in the actuating device;

Fig. 8 a-8b is the front view and the vertical view cutaway drawing of cylinder connecting panel in the actuating device, and Fig. 8 c and 8d are the upward view and the section-drawings of cylinder connecting panel adapter plate, and Fig. 8 e is the front view of connecting panel axle;

Fig. 9 a-9b is front view and the birds-eye view according to the stretching device of cutting film device automatically of the utility model;

Figure 10 a-10b is the front view and the birds-eye view of stretch in the stretching device;

Figure 11 a-11b is the cutaway view and the birds-eye view of stretching device bottom bracket;

Figure 12 is the front view of mount pad axle in the stretching device;

Figure 13 is the front view of mount pad base plate in the stretching device;

Figure 14 a-14b is that cylinder promotes the scheme drawing that stretch is rotated;

Figure 15 is the alternative scheme of actuating device and stretching device;

Figure 16 a-16b is front view and the birds-eye view according to the cutting knife of cutting film device automatically of the utility model;

Figure 17 a-17b is the front view and the birds-eye view of cutting knife pedestal in the cutting knife;

Figure 18 is the front view of blade in the cutting knife;

Figure 19 is the view according to the control circuit of cutting film device automatically of the utility model.

The specific embodiment

With reference now to accompanying drawing, describe the embodiment of the utility model, wherein same parts use identical Reference numeral from start to finish in each figure.

Referring to Fig. 2 and Fig. 3, the film device 1 of cutting automatically of the utility model comprises actuating device 10, stretching device 11, cutting knife 12 and control circuit 14 etc., and wherein, actuating device 10, stretching device 11 and cutting knife 12 are positioned at the side of twining the film volume that has of wrapping machine 2.Product buttress 5 is placed on the rotating disk 4 of wrapping machine 2 and twines the film operation, when control circuit 14 detect wrapping machine 2 twine the film end of job time, actuating device 10 drives stretching devices 11 and rotates around its axle, will twine film and move cutting knife 12 places to, will twine the film cut-out.Subsequently, the product buttress 5 that will cut behind the film of fork truck is removed from rotating disk 4.

Introduce the concrete structure of cutting film device 1 each assembly automatically below.

Show that like Fig. 4 actuating device 10 comprises cylinder 21, guide rod 22, cylinder pedestal 23 and connecting panel 24 etc.Cylinder 21 is fixed on the cylinder pedestal 23, under the guiding of the guide rod that play the guiding role 22, drives connecting panel 24 and does horizontal reciprocating movement, and connecting panel 24 promotes stretching device 11 and rotates around its axle.

Show like Fig. 5-6; Cylinder pedestal 23 comprises air cylinder fixed plate 31 gentle cylinder bottom plates 32; Air cylinder fixed plate 31 is fixed on the horizontal surface of cylinder base plate 32 through connection modes such as welding, riveted joints vertically, and cylinder base plate 32 usefulness expansion bolts 33 are fixed on the frame (not shown) of cutting film device 1 automatically.This frame is to cut the structure that is used for fixing each assembly in the film device 1 automatically, such as being a base plate etc.

Show that like Fig. 7 a-7b guide rod 22 is made up of near-end cylinder 22a and far-end cylinder 22b, the diameter of near-end cylinder 22a is a bit larger tham the diameter of far-end cylinder 22b, forms shoulder 22c in the position that both engage thus.The diameter of near-end cylinder 22a is slightly smaller than the top through hole 31b of air cylinder fixed plate 31, and (referring to Fig. 5 diameter a), thus, near-end cylinder 22a can pass through hole 31b free motion.

Show that like Fig. 8 a-8d vertical connecting panel 24 has the connecting panel adapter plate 36 of level in its underpart.Referring to Fig. 8 e, connecting panel axle 37 has axle cap 37a, axle body 37b and the threaded portion 37c that diameter reduces successively along its length direction.Axle cap 37a inserts and fixes (such as through welding) in the 36a of the hole of connecting panel adapter plate 36, and axle body 37b is used for supporting and fixed type bearing 38, screws in the inner ring that nut 39 is used for fixing bearing 38 among the threaded portion 37c.

Again with reference to figure 4, cylinder 21 comprises cylinder body 21a and cylinder piston rod 21b.Cylinder body 21a is fixed to a side of air cylinder fixed plate 31 through bolt 34, and drives the central through hole 31a that cylinder piston rod 21b passes air cylinder fixed plate 31 and do horizontal reciprocating movement.Cylinder piston rod 21b has screw thread at the place, end away from cylinder body 21a; Simultaneously, the far-end cylinder 22b of guide rod 22 also has screw thread at the place, end away from shoulder 22c.After the

hole

24a and 24b of connecting panel 24 inserted in the above-mentioned threaded end of far-end cylinder 22b and cylinder piston rod 21b, screw nut 35a and 35b, thus, connecting panel 24 is fixed on the piston rod 21b and guide rod 22 of cylinder.When cylinder body 21a driving cylinder piston rod 21b did horizontal reciprocating movement, the guide rod 22 that play the guiding role was done horizontal reciprocating movement with cylinder piston rod 21b, does horizontal reciprocating movement thereby drive connecting panel 24.

Show that like Fig. 9 a-9b stretching device 11 comprises stretch 41 and mount pad 42 etc.Stretch 41 is L-shaped, comprises the horizon bar 43 and vertical bar 44 of approximate vertical each other.Vertically bar 44 is fixed to an end 43a of horizon bar 43 vertically through connection modes such as welding, riveted joints.Mount pad 42 comprises mount pad axle 45, bearing 46, bearing seat 47 and mount pad base plate 48.When cylinder 21 drives connecting panels 24 forwards during horizontal motion, the bearing 38 on the connecting panel 24 promotes stretch 41 and rotates around mount pad 42, and stretch 41 will be twined film and is pulled to cutting knife 12 places and cut off thus.

Show that like Figure 10 a-10b horizon bar 43 rotates on mount pad 42 around rotation axis O, rotation axis O is positioned at the left-of-center position of horizon bar 43, and arranged around has 4 screw 43c, is used for horizon bar 43 is fixed to mount pad 42.

Show that like Figure 11-13 bearing seat 47 of mount pad 42 is the cylinder bodily form, there is a through hole at the center, and the end portion 47a of this through hole and the diameter of upper part 47b are greater than the diameter of centre portion 47c.Bearing 46 interference are assemblied among end portion 47a and the upper part 47b.Have 4 screw 47d on the top surface of bearing seat 47, it is corresponding with 4 screw 43c on the horizon bar 43, through in screw 47d and 43c, screwing in the rotation axis O place that bolt 50 is fixed to bearing seat 47 horizon bar 43.Mount pad axle 45 is the cylinder bodily form, comprises axle cap 45a and axle body 45b.Axle cap 45a is fixed among the centre hole 48a of mount pad base plate 48 through connection modes such as welding, riveted joints, and axle body 45b is installed in the inner ring of bearing 46.Mount pad base plate 48 is fixed on the frame of cutting film device 1 automatically through expansion bolt 49.Through the above-mentioned annexation of mount pad axle 45, bearing 46, bearing seat 47 and mount pad base plate 48, bearing seat 47 can be around mount pad axle 45 (being rotation axis O) with respect to 48 rotations of mount pad base plate with stretch 41 fixed thereon.Alternatively, mount pad 42 also can use the combination of copper sheathing and mount pad axle to realize rotation.In copper sheathing and the mount pad axle one is fixed on the rotation axis O place of horizon bar 43, and another person is fixed on the mount pad base plate 48.

Shown in Figure 14 a-14b, when cylinder 21 drives cylinder piston rod 21b forwards during horizontal motion, cylinder piston rod 21b drives guide rod 22 and forwards does horizontal motion with connecting panel 24.The bearing 38 of connecting panel 24 touches with the flanked of the horizon bar 43 of stretch 41 and on the side of horizon bar 44, rolls; Promote stretch 41 thus and rotate counterclockwise with respect to mount pad base plate 48 around mount pad axle 45 (being rotation axis O) with bearing seat 47, the vertical bar 44 of stretch 41 will twine film and be pulled to cutting knife 12 places and cut off thus.Bearing 38 rolls on stretch 41, both reduces friction, and makes action flexibly level and smooth again.

Again with reference to figure 9, stretching device 11 can also comprise retracing spring 51, spring fixed seat 52 and radius stay 53.Spring fixed seat 52 L-shaped (promptly comprising horizontal segment and vertical section), the end of horizontal segment is fixed to a side (referring to Figure 13) of mount pad base plate 48 through modes such as welding.Radius stay 53 is fixed on the mount pad base plate 48 vertically.One end of retracing spring 51 is fixed to the end 43b of horizon bar 43 and the position A between the rotation axis O, and the other end is fixed to vertical section top of spring fixed seat 52.As indicated above; When stretch 41 under the driving of cylinder 21 around the certain angle of rotation axis O left-hand revolution and cut off twine film after; 41 dextrorotations of retracing spring 51 pulling stretch rotate back into initial position, and radius stay 53 prevents that 41 rotations of retracing spring 51 pulling stretch from surpassing its initial position.

Referring to Figure 15,, can cancel guide rod 22 and retracing spring 51, spring fixed seat 52 and the radius stay 53 of connecting panel 24 and stretching device 11 in the actuating device 10, and bearing 38 directly is fixed on the cylinder piston rod 21b as another kind of alternative scheme.Simultaneously, at least one end with the horizon bar 43 of stretch 41 is transformed into groove structure as shown in the figure.When cylinder 21 drives cylinder piston rod 21b forwards during horizontal motion, cylinder piston rod 21b drives bearing 38 and does horizontal motion forward.Bearing 38 rolls in the groove structure of horizon bar 43; Promote stretch 41 thus and rotate counterclockwise with respect to mount pad base plate 48 around mount pad axle 45 (being rotation axis O) with bearing seat 47, the vertical bar 44 of stretch 41 will twine film and be pulled to cutting knife 12 places and cut off thus.After cut off twining film, cylinder 21 drives cylinder piston rod 21b horizontal motion back, drives stretch 41 cws thus and forwards to and get back to initial position.The above two kinds of structures that it should be noted that actuating device 10 and stretching device 11 only are used for example, and the mechanism that rotatablely moves that any straight reciprocating motion with cylinder converts stretch to all can be used for the utility model.

Shown in Figure 16 a-16b, cutting knife 12 comprises blade 61 and cutting knife pedestal 62.Cutting knife pedestal 62 comprise angle bar 63 and with the cutting knife pedestal bottom plate 64 of angle bar 63 approximate vertical.Angle bar 63 is fixed on the cutting knife pedestal bottom plate 64 of cutting knife pedestal 62 through connection modes such as welding, riveted joints.Cutting knife pedestal bottom plate 64 is fixed on the frame of cutting film device automatically through expansion bolt 66.

Shown in Figure 17 and 18, angle bar 63 has screw 63a, and cutting knife 61 has the cooresponding screw 61b with screw 63a.Through bolt 65 is screwed in

screw

63a and 61b, blade 61 is fixed on the angle bar 63 of cutting knife pedestal 62 vertically.

In addition, cut the blowning installation 15 (Fig. 2 and Fig. 3) that film device 1 can also comprise the winding film volume place that is arranged in wrapping machine 2 automatically, be used for the film joint of the winding film that cuts off is blown to rotating disk 4, can push down the film joint so that next plate is waited the product buttress that twines film.Blowning installation 15 comprises the horizontal gas blow pipe and vertical gas blow pipe that is arranged in winding film volume both sides; Wherein, Laterally the direction of gas blow pipe air blowing is vertical substantially with the direction that the winding film rolls out film, and the direction that vertical gas blow pipe is blown is parallel with the direction cardinal principle that the winding film rolls out film.Twining the cut while of film; Can not be compressed the air tram to the rotating disk 4 of blowing off on the stretch 41 for preventing that the film joint is entangled in; Earlier will twine the side that film blows to wrapping machine 2 with horizontal gas blow pipe; After stretch 41 is got back to initial position and product buttress 5 and is removed, will twine film with vertical gas blow pipe again and blow on the rotating disk 4.

Control circuit 14 and above-mentioned assembly are connected and control the operation of said modules.Show that like Figure 19 this control circuit 14 comprises time relay SL1, SL2 and SL3, travel switch QS, intermediate relay K1 and K2, electromagnetic valve Y1 and Y2, and light eye etc.Time relay SL1, SL2 and SL3 are a kind of when adding or remove incoming signal, and output need be delayed time or in limited time to specific time closure or break off the relay of its controlled switch.Travel switch QS is a kind of travel position and control apparatus of commutation circuit mode of operation according to movable parts.Electromagnetic valve Y1 and Y2 utilize electric signal, and the break-make of circuit is changed, thereby make cylinder produce the change of state of kinematic motion, and electromagnetic valve Y1 and Y2 can be installed on the air cylinder fixed plate 31 of actuating device 10.The light eye has or not object to hide through its place ahead, makes circuit produce on-off action.

Control circuit 14 has 6 shunt, first and second, four to six along separate routes 0 between the 24V voltage, the 3rd along separate routes 0 between the output voltage of the frequency converter of rotating disk 4.Wherein, First along separate routes from high voltage end to low-voltage end connect successively normally closed switch SL2-1, travel switch QS and the first intermediate relay K1 of the second time relay SL2, and the first normal open switch K1-1 of the first intermediate relay K1 is parallelly connected with travel switch QS; Second along separate routes from high voltage end to low-voltage end connect successively normally closed switch K2-1 and the very first time relay SL1 of the second intermediate relay K2; The 3rd has second relay K 2 from high voltage end to low-voltage end along separate routes; The 4th along separate routes from high voltage end to low-voltage end connect the successively second normal open switch K1-2 of the first intermediate relay K1, normal open switch SL1-1 and the electromagnetic valve Y1 of very first time relay SL1, and the second time relay SL2 is parallelly connected with electromagnetic valve Y1; The 5th along separate routes from high voltage end to low-voltage end connect successively light eye and the 3rd time relay SL3; The 6th along separate routes from high voltage end to low voltage section connect the successively first normal open switch SL3-1 and the electromagnetic valve Y2 of the 3rd time relay.

In control circuit 14, the 3rd is used to along separate routes to survey twining membrane operations and whether finishing of wrapping machine.Second is used to twine membrane operations along separate routes finishes back time-delay connection the 4th along separate routes.The 4th is used for starting automatically cylinder along separate routes, and the operation of laterally blowing.First is used for cutting membrane operations end back automatic cutout cylinder along separate routes, and stops laterally to blow operation.Whether the 5th along separate routes is used to survey the product buttress of cutting behind the film is removed.The 6th is used for the operation of vertically blowing automatically after the product buttress is removed along separate routes.

Introduce now and twine film and the detailed process of cutting the film operation.As shown in Figure 2, in twining membrane process, rotating disk 4 drives product buttress 5 and rotates.Twine film pre-stretching device 3 and move straight up lentamente along its length direction, make entire product buttress 5 can both twine film from the initial position that is positioned at wrapping machine 2 bottoms.When twining film pre-stretching device 3 and drive to wrapping machine 2 tops and touch travel switch QS; The contact action of travel switch QS; Make travel switch QS closed, the intermediate relay K1 in first shunt of control circuit connects, and K switch 1-1 is closed; Making wins still is in on-state along separate routes after the QS switch breaks off, the K switch 1-2 in the 4th shunt is also closed simultaneously.Twine during the film, the voltage of the frequency converter output 12V of rotating disk 4, the intermediate relay K2 in the 3rd shunt connects; At this moment, the normally closed switch K2-1 in second shunt breaks off, and time relay SL1 must not; Normal open switch SL1-1 in the 4th shunt breaks off, and electromagnetic valve Y1 breaks off, and cylinder 21 is not worked.

After twining the film end of job, rotating disk 4 shuts down, and frequency converter stops to export the voltage of 12V, and intermediate relay K2 breaks off, and at this moment, normally closed switch K2-1 connects, and time relay SL1 connects.After time relay SL1 delayed time about 3 seconds, normal open switch SL1-1 was closed.

Because normal open switch K1-2 in the 4th shunt and SL1-1 are all closed, electromagnetic valve Y1 connects, and cylinder 21 making current are also started working.As indicated above and referring to Figure 14 a-14b, cylinder 21 drives cylinder piston rod 21b horizontal motion forwards, and cylinder piston rod 21b drives guide rod 22 and forwards does horizontal motion with connecting panel 24.The bearing 38 of connecting panel 24 touches with the flanked of the horizon bar 43 of stretch 41 and on the side of horizon bar 43, rolls, and promotes stretch 41 thus around mount pad axle 45 (being rotation axis O) left-hand revolution.Stretch 41 will be twined film and will be pulled to cutting knife 12 places, will twine film through the blade on the cutting knife 12 61 and cut off.When cylinder 21 was connected work, electromagnetic valve Y1 told branch's gas circuit, laterally blew constantly to twining film.

Start in the process that promotes the stretch rotation in said cylinder; The time relay SL2 parallelly connected with it also connects, and after postponing 5 seconds (this moment, the membrane operations of cutting of air cylinder driven finished), the normally closed switch SL2-1 in first shunt breaks off; Relay K 1 is broken off; Thereby cause the K switch 1-2 in the 4th shunt to break off, cylinder 21 quits work, and drive cylinder piston rod 21b gets back to initial position.(this moment, film was cut off) laterally blown and finished when cylinder operation finished.

At this moment, stretch 41 around rotation axis O moved retracing spring 51 left-hand revolutions to about 85 the degree.Under the tension of retracing spring 51, stretch 41, is stopped the rotation until run into stopping just of radius stay 52 in initial position along the pointer rotation around rotation axis O.

When twining the good product of film buttress 5 and from rotating disk 4, remove; The light eye detects moving of product buttress 5; Time relay SL3 in the 5th shunt is connected, thereby the normal open switch SL3-1 in the 6th shunt is connected, control electromagnetic valve Y2 starts working; Control the joint that vertical gas blow pipe will twine film and place on the rotating disk 4, to wait for twining film and cutting membrane operations next time.

Though through illustrating and narrating the content that discloses the utility model, the utility model is not limited to disclosed details, the difference that does not break away from the utility model spirit changes and equivalence is replaced because may produce.Given this plant situation,, utilize conventional means to make further change and equivalent utility model, within the protection domain that all these change and equivalent utility model should be regarded as in this claim being limited the utility model for those skilled in the art.

Claims

One kind be used for wrapping machine cut film device automatically, it is characterized in that comprising:

Actuating device, said actuating device comprises cylinder and Transmission, the said Transmission of said air cylinder driven is done horizontal reciprocating movement;

Stretching device, said stretching device comprise with respect to the rotatable stretch of the frame of cutting film device automatically;

Cutting knife, said cutting knife are disposed between said wrapping machine and the said stretching device; With

Control circuit, said control circuit is connected with said cylinder with said wrapping machine, and controls the action of said cylinder according to the mode of operation of said wrapping machine,

Wherein, When said control circuit detect said wrapping machine twine the film end of job time; Said control circuit starts said cylinder; So that the said Transmission of said air cylinder driven is done horizontal reciprocating movement, said Transmission promotes said stretch rotation thus, thereby said stretch is cut off the winding film stretching on the said wrapping machine to said cutter with said winding film.
2. the film device of cutting automatically according to claim 1; It is characterized in that; Said Transmission comprise link to each other with the piston rod of said cylinder and by the connecting panel of said air cylinder driven be installed in the bearing on the said connecting panel; When doing horizontal reciprocating movement under the driving of said connecting panel at said cylinder, said connecting panel promotes said stretch rotation through the rolling touch of said bearing and said stretch.
3. the film device of cutting automatically according to claim 2; It is characterized in that; Said Transmission also comprises guide rod, and said guide rod is parallel with said cylinder piston rod, and an end of said guide rod is fixed on the said connecting panel, the other end freely passes the air cylinder fixed plate that is used for fixing cylinder.
4. the film device of cutting automatically according to claim 2; It is characterized in that; Said stretching device also comprises retracing spring and radius stay, and said retracing spring is used for after said stretch is rotated said stretch is withdrawn into the initial position of the said stretch that is limited said radius stay.
5. the film device of cutting automatically according to claim 1; It is characterized in that said Transmission is a bearing, said bearing fixing is at the free end place of the piston rod of said cylinder; And has groove structure on the said stretch; When the said bearing of said air cylinder driven was done horizontal reciprocating movement, said bearing rolled in said groove structure, thereby promoted said stretch rotation.
6. according to the described film device of cutting automatically of arbitrary claim in the claim 1 to 5, it is characterized in that said stretch rotatably is installed to said frame through mount pad.
7. the film device of cutting automatically according to claim 6; It is characterized in that; Said mount pad comprises the mount pad axle, passes the mount pad bearing of said mount pad axle, places the mount pad bearing seat of said mount pad bearing; One end of said mount pad bearing seat is fixed to the rotation axis place of said stretch, and an end of said mount pad axle is fixed on the base plate of said mount pad.
8. the film device of cutting automatically according to claim 6; It is characterized in that; Said mount pad comprises copper sheathing and mount pad axle; A rotation axis place that is fixed to said stretch in said copper sheathing and the mount pad axle, another in said copper sheathing and the mount pad axle is fixed on the base plate of said mount pad.
9. according to the described film device of cutting automatically of arbitrary claim in the claim 1 to 5; It is characterized in that also comprising blowning installation; Said blowning installation is arranged in the winding film volume place of said wrapping machine, is used for the film joint of the winding film that cuts off is blown to the rotating disk of said wrapping machine.
10. the film device of cutting automatically according to claim 9; It is characterized in that said blowning installation comprises horizontal gas blow pipe and vertical gas blow pipe; The direction that said horizontal gas blow pipe is blown is vertical substantially with the direction that said winding film rolls out film, and the direction that said vertical gas blow pipe is blown is parallel substantially with the direction that said winding film rolls out film.
11. according to the described film device of cutting automatically of arbitrary claim in the claim 1 to 5; It is characterized in that said control circuit comprises first normal open switch and normally closed switch, travel switch, first electromagnetic valve and second electromagnetic valve and the light eye of second normal open switch, second intermediate relay and said second intermediate relay of normal open switch, first intermediate relay and said first intermediate relay of normally closed switch, the 3rd time relay and said the 3rd time relay of normal open switch, second time relay and said second time relay of very first time relay and said very first time relay; And; Said control circuit has six shunt, wherein:

First is used for cutting membrane operations end back automatic cutout cylinder along separate routes; Said first connect the successively along separate routes normally closed switch of said second time relay, said travel switch and said first intermediate relay and first normal open switch of said first intermediate relay and the parallel connection of said travel switch;

Second along separate routes is used to twine membrane operations finishes the back time-delay and connects the 4th along separate routes, said second connect said second intermediate relay along separate routes successively normally closed switch and said very first time relay;

The 3rd is used to along separate routes to survey twining membrane operations and whether finishing of wrapping machine, and the said the 3rd is connected to the rotating disk frequency converter of said wrapping machine along separate routes, and parallel series has said second intermediate relay;

The 4th is used for starting automatically cylinder along separate routes; And the operation of laterally blowing; The said the 4th connect along separate routes second normal open switch of said first intermediate relay, said very first time relay successively normal open switch and said first electromagnetic valve, and said second time relay and the parallel connection of said first electromagnetic valve;

Whether the 5th along separate routes is used to survey the product buttress of cutting behind the film is removed, the said the 5th connect along separate routes said light eye and said the 3rd time relay; With

The 6th is used for along separate routes the operation of vertically blowing automatically after the product buttress is removed, said the 6th shunt the connect normal open switch and said second electromagnetic valve of said the 3rd time relay.