PE heat-shrinkable packaging film punching equipment for cigarette distribution
Technical Field
The invention relates to film processing equipment, in particular to punching equipment for PE heat-shrinkable packaging films for cigarette distribution.
Background
The PE heat-shrinkable film has the characteristics of thin thickness and strong winding force and retractility, and is widely applied to storage and transportation links in various fields such as papermaking, logistics, chemical industry, plastic raw materials, building materials, foods, glass and the like. The PE heat-shrinkable film is used for packaging the outside of the product, scattered small pieces can be compactly and fixedly bundled into a unit, and meanwhile, a very light protective appearance can be formed around the product, so that the purposes of dust prevention, oil resistance, moisture resistance, water resistance and theft prevention are achieved.
Particularly, the wrapping packaging of the PE heat-shrinkable film ensures that the packaged articles are uniformly stressed, the damage to the articles caused by uneven stress is avoided, the adjustable stretching force can enable hard products to be clung to each other, soft products to be compacted, and the PE heat-shrinkable film has unique packaging effect especially in tobacco industry and textile industry.
For tobacco industry, the PE heat-shrinkable film is used for packaging cigarettes with a large number of whole strips and boxes, and the PE heat-shrinkable film has the main effects of integrating the cigarettes, facilitating transportation, protecting the outer package of the cigarettes and preventing damage to the cigarettes to influence selling.
The conventional PE heat-shrinkable film is provided with holes arranged in an orthogonal matrix as shown in fig. 1, but when the pulling external force in the orthogonal direction is large, the film provided with staggered holes as shown in fig. 2 is less likely to be damaged, and the durability is better. However, the current punching equipment can only process one type of hole on the film, and when another type of hole is to be processed, the punch of the punching equipment needs to be replaced, so that the machine is required to be stopped, time is wasted, and the processing efficiency is limited.
In order to solve the above-mentioned problems, it is necessary to provide a punching apparatus capable of forming holes of different types.
Disclosure of Invention
The invention aims to provide a punching device capable of processing holes of different types.
In order to achieve the above purpose, the invention provides a punching device for PE heat-shrinkable packaging films for cigarette distribution, comprising a frame, a bearing plate fixed at the lower end of the frame, a lifting plate slidingly arranged at the upper end of the frame and opposite to the bearing plate, and a main driving device fixed on the frame and driving the lifting plate to lift, wherein a working channel for passing films is arranged between the lifting plate and the bearing plate, a plurality of rows of through holes are arranged on the bearing plate along the left-right direction at intervals, each row of through holes extends along the front-rear direction, a plurality of lower long grooves are also arranged on the bearing plate along the front-rear direction, the long grooves and the through holes are staggered in the left-right direction of the bearing plate, a plurality of rows of fixed punches corresponding to the plurality of rows of through holes are fixedly arranged on the bottom surface of the lifting plate, a plurality of upper long grooves corresponding to the lower long grooves are also penetratingly arranged on the lifting plate, a sliding strip sliding back and forth on the long grooves is fixedly provided with an auxiliary driving device, and the auxiliary driving device slides back and forth on the long grooves through the sliding strip, and the auxiliary driving device can slide back and move the sliding strip to the upper punch through the sliding strip or the upper punch through the sliding strip and the lower punch.
Compared with the prior art, the punching equipment is provided with the fixed punch and the movable punch sliding along with the sliding strip on the lifting plate, so that the punching equipment can be used for punching holes in orthogonal arrangement when the movable punch is aligned with the fixed punch, and only the sliding strip is required to be moved to enable the movable punch to be staggered with the fixed punch when a staggered hole film is required to be produced. Therefore, the punching equipment can be used for punching orthogonal holes and staggered holes on the film without replacing the punch, so that shutdown is not required, and the working efficiency can be effectively ensured.
Preferably, four corners of the bearing plate are respectively provided with a vertical guide rod, and four corners of the lifting plate are respectively sleeved with the four guide rods in a sliding manner.
Preferably, the main driving device is a cylinder fixed at the top of the frame, and a piston rod of the cylinder is downwards fixed on the lifting plate.
Preferably, the bearing plate is provided with three rows of through holes and two lower long grooves, and each lower long groove is positioned between two rows of through holes.
Preferably, a chute is formed in the top of the lifting plate, the upper long groove is communicated below the chute, and the sliding strip is slidably arranged in the chute.
Specifically, a first positioning part and a second positioning part are respectively arranged at two ends in the sliding groove, the movable punch is aligned with the fixed punch in the left-right direction when the sliding bar abuts against the first positioning part, and the movable punch is staggered with the fixed punch in the left-right direction when the sliding bar abuts against the second positioning part.
Preferably, the auxiliary driving device is a servo motor, the transmission mechanism comprises a rack fixed on the slide bar and a gear driven to rotate by the servo motor, and the gear is meshed with the rack.
Specifically, the lifting plate is provided with a plurality of sliding strips, a plurality of auxiliary driving devices and a plurality of transmission mechanisms, wherein the number of the sliding strips is the same as that of the long grooves.
Preferably, the lifting plate is provided with a plurality of sliding strips with the same number as the plurality of long grooves, a linkage piece is fixedly connected between the plurality of sliding strips, and the auxiliary driving device drives one sliding strip to slide through the transmission mechanism.
Drawings
FIG. 1 is a schematic view of a film with orthogonal holes.
FIG. 2 is a schematic view of a film with staggered holes.
Fig. 3 is a perspective view of a perforating apparatus for a cigarette dispensing PE heat shrink wrap film of the present invention.
Fig. 4 is a side view of the punching apparatus of the present invention.
Fig. 5 is an exploded view of the punching apparatus.
Fig. 6 is a further exploded view of the perforating apparatus of fig. 5.
Fig. 7 is a top view of the lifter plate and its upper slide.
Fig. 8 is a schematic diagram of the positional relationship between the movable punch and the fixed punch when the slide is in the position of fig. 7.
Fig. 9 is a top view of the lifter plate and its upper slide.
Fig. 10 is a schematic diagram of the positional relationship between the moving punch and the fixed punch when the slide is in the position of fig. 8.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 3to 6, the present invention provides a punching device for a PE heat-shrinkable packaging film for cigarette distribution, which is used for punching a PE heat-shrinkable packaging film used in a cigarette distribution process, and hereinafter referred to as a "punching device". The punching equipment comprises a frame 1, a bearing plate 2, a lifting plate 3, a main driving device 4, an auxiliary driving device 5 and a slide bar 6.
The carrying plate 2 is horizontally fixed at the lower end of the frame 1, and the carrying plate 2 is provided with a plurality of rows of through holes 20 spaced apart along the left-right direction, and each row of through holes 20 extends along the front-rear direction, i.e. a plurality of through holes 20 in each row are arranged at intervals along the front-rear direction. The bearing plate 2 is also provided with a plurality of lower long grooves 21 extending along the front-back direction, the lower long grooves 21 vertically penetrate through the bearing plate 2, and a plurality of long grooves and a plurality of rows of through holes 20 are staggered in the left-right direction of the bearing plate 2. Specifically, in this embodiment, the carrier plate 2 is provided with three rows of through holes 20 and two lower elongated slots 21, and each lower elongated slot 21 is located between two rows of through holes 20. In addition, four corners of the bearing plate 2 are respectively provided with a raised guide rod 22,
The lifting plate 3 is located above the bearing plate 2, and four corners of the lifting plate 3 are respectively slidably sleeved on the four guide rods 22, so that the lifting plate can ascend or descend relative to the bearing plate 2 to be far away from or close to the bearing plate 2. The main driving device 4 is fixed on a mounting plate 11 at the top of the frame 1, and its output end is downward connected to the lifting plate 3 and drives the lifting plate 3 to lift. Specifically, the main driving device 4 is an air cylinder, and a piston rod of the air cylinder extends downward and is fixed to the lifting plate 3. The main driving device 4 may be any other device, such as an electric push rod, and may mainly drive the lifting plate 3 to lift. Between the lifting plate 3 and the carrier plate 2 is a working channel 9 through which the film passes, in particular on the carrier plate 2, during perforation the film passes through the working channel 9.
A plurality of columns of fixing punches 31 corresponding to the number of columns of the through holes 20 are fixed to the bottom of the lifting plate 3, and since there are three columns of the through holes 20, there are three columns of the fixing punches 31, and a plurality of fixing punches 31 in each column of fixing punches 31 are respectively opposite to the positions of a plurality of through holes 20 in the corresponding column, each fixing punch 31 can be inserted into the through hole 20 after the lifting plate 3 descends. The lifting plate 3 is also provided with a plurality of upper elongated grooves 33 corresponding to the plurality of lower elongated grooves 21 in a penetrating manner, and two upper elongated grooves 33 are provided for the lower elongated grooves 21, and each upper elongated groove 33 is positioned between two rows of fixed punches 31. Two sliding grooves 35 are formed in the top of the lifting plate 3, each upper long groove 33 is communicated below the corresponding sliding groove 35, the number of the sliding strips 6 is two, the two sliding strips 6 are respectively arranged in the two sliding grooves 35 in a sliding mode, the sliding grooves 35 and the upper long grooves 33 extend in the front-rear direction, and therefore the sliding direction of the sliding strips 6 is also the front-rear direction. The auxiliary driving devices 5 are fixed on the lifting plate 3, the number of the auxiliary driving devices is two, and the two auxiliary driving devices 5 drive the two sliding strips 6 to slide back and forth on the lifting plate 3 through transmission mechanisms respectively. In this embodiment, the auxiliary driving device 5 is a servo motor, and the transmission mechanism includes a rack 71 fixed on the slide 6 and a gear 72 driven to rotate by the servo motor, and the gear 72 is meshed with the rack 71. The slide 6 can be driven to slide by the meshing relationship of the gear 72 and the rack 71 when the auxiliary driving device 5 is started. The two auxiliary driving devices 5 keep the same power output, so that the sliding directions and speeds of the two sliding strips 6 are consistent.
A row of moving punches 62 is fixed to the bottom of each slide 6, the moving punches 62 pass through the upper long grooves 33 and protrude from the bottom surface of the lifting plate 3, and the protruding degree of the moving punches 62 is the same as that of the fixed punches 31. The positions of the two rows of moving punches 62 under the two slide bars 6 are opposite to the positions of the two lower long grooves 21 on the carrier plate 2, and the length of the lower long grooves 21 is greater than the whole length of one row of moving punches 62.
In this embodiment, the two auxiliary driving devices 5 respectively drive the two sliding strips 6 through two transmission mechanisms, in another implementation of this scheme, only one auxiliary driving device 5 and one transmission mechanism may be provided, and a linkage member is fixedly connected between the two sliding strips 6, and when the auxiliary driving device 5 drives one sliding strip 6 to slide through the transmission mechanism, the other sliding strip 6 may be driven to slide synchronously through the linkage member.
As shown in fig. 7, a first positioning portion 37 and a second positioning portion 38 are respectively provided at both ends of each chute 35, and the first positioning portion 37 and the second positioning portion 38 function to position the slide bar 6. When the slide 6 abuts against the first positioning portion 37, as shown in fig. 8, the position of the movable punch 62 under the slide 6 is aligned with the position of the fixed punch 31, so that the punches under the entire lifter plate 3 are in an orthogonal arrangement, and the punching apparatus can be used to punch orthogonal holes in a film. Referring to fig. 9 and 10, when the slide 6 slides and abuts against the second positioning portion 38, the position of the moving punch 62 under the slide 6 is staggered from the position of the fixed punch 31, so that the punches under the entire lifting plate 3 are staggered, and the punching device can be used for punching staggered holes in the film.
Compared with the prior art, the punching device of the invention is provided with the fixed punch 31 and the movable punch 62 sliding along with the slide bar 6 on the lifting plate 3, so that the punching device can be used for punching holes in orthogonal arrangement when the movable punch 62 is aligned with the fixed punch 31, and only the slide bar 6 is required to be moved to enable the movable punch 62 to be staggered with the fixed punch 31 when the staggered hole film is required to be produced. Therefore, the punching equipment can be used for punching orthogonal holes and staggered holes on the film without replacing the punch, so that shutdown is not required, and the working efficiency can be effectively ensured.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, but is for the convenience of those skilled in the art to understand and practice the invention, and therefore, equivalent variations to the appended claims are intended to be encompassed by the present invention.