CN217967232U - Automatic EVA cutting device - Google Patents

Abstract

The application discloses an EVA automatic cutting device which comprises a rack, a feeding mechanism and a punching mechanism; the feeding mechanism and the punching mechanism are adjacently arranged on the frame, and the feeding mechanism is suitable for conveying the EVA adhesive film wound on the feeding mechanism to the lower part of the punching mechanism for cutting; the feeding mechanism is provided with a guide component on the discharging side, and the EVA adhesive film on the discharging side of the feeding mechanism is suitable for sliding along the guide component in an abutting mode. The beneficial effect of this application: through setting up the guide assembly at feeding mechanism's ejection of compact side to when the EVA glued membrane carries out the pay-off to die cutting mechanism, the EVA glued membrane can be followed the guide assembly and offset and slide, and then can prevent EVA glued membrane and feeding mechanism's adhesion, thereby the cutting precision of effectual improvement EVA glued membrane.

Description

Automatic EVA cutting device

Technical Field

The application relates to the technical field of photovoltaic module production, in particular to an automatic EVA cutting device.

Background

The EVA packaging adhesive film is the most important battery piece packaging material due to the advantages of the EVA packaging adhesive film in the aspects of adhesion, light transmittance and durability. Photovoltaic module encapsulates the battery piece between glass and backplate through upper and lower two-layer EVA glued membrane at the in-process of preparation to avoid external environment to exert an influence to the electrical property of battery piece, can also place photovoltaic module and appear the battery piece shadow and split in transport and installation.

Before the packaging adhesive film is used, in order to facilitate the use of a user, after the packaging adhesive film is produced, the packaging adhesive film is cut into a certain size to be used in the next process or packaged and delivered, so that a cutting device is needed to be used in the cutting process of the packaging adhesive film.

When the existing cutting device is used, the following problems mainly exist:

(1) When the EVA adhesive film is cut, the cutter is easy to be blocked.

(2) The cut EVA adhesive film is easy to adhere to the roller.

(3) The cut strips of the EVA adhesive films with different widths are collected irregularly.

Therefore, there is an urgent need to improve the existing EVA cutting device.

SUMMERY OF THE UTILITY MODEL

One of the objectives of the present application is to provide an automatic cutting device for EVA, which can solve at least one of the problems in the background art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: an EVA automatic cutting device comprises a frame, a feeding mechanism and a punching mechanism; the feeding mechanism and the punching mechanism are adjacently arranged on the rack, and the feeding mechanism is suitable for conveying the EVA adhesive film wound on the feeding mechanism to the lower part of the punching mechanism for cutting; the feeding mechanism is provided with a guide assembly on the discharging side, and the EVA adhesive film on the discharging side of the feeding mechanism is suitable for sliding along the guide assembly in an abutting mode so as to avoid the EVA adhesive film from being adhered to the feeding mechanism.

Preferably, a discharging platform is arranged between the feeding mechanism and the punching mechanism on the frame; the feeding mechanism comprises a roller assembly; the roller assembly is suitable for clamping the EVA adhesive film and rotating relatively, so that the EVA adhesive film is dragged along the direction from the discharging table to the punching mechanism; the guide assembly is arranged on the discharging side of the roller assembly and located above the discharging platform.

Preferably, the roller assembly includes a driving roller and a driven roller; the driving roller is positioned below the discharging table, and the driven roller is positioned above the discharging table; the guide assembly comprises a supporting roller and a plurality of elastic belts; the supporting roller is fixed on the rack and is parallel to the driven roller; the supporting roller and the driven roller are connected through the elastic belt, so that the EVA adhesive film on the discharge side of the roller assembly is abutted and slid along the elastic belt.

Preferably, a plurality of second grooves are formed in the circumferential side wall of the driven roller at intervals along the axial direction, and the elastic belts are correspondingly located in the second grooves, so that the situation that the elastic belts clamp the EVA adhesive film to generate interference is avoided, and meanwhile, the elastic belts are not deviated can be guaranteed.

Preferably, the punching mechanism comprises a driving mechanism and a cutter assembly; the driving mechanism is suitable for driving the cutter assembly to vertically reciprocate so as to cut the EVA adhesive film; the cutter assembly is connected with the driving mechanism through an elastic deflection structure, so that the cutter assembly deflects through the elastic deflection structure when moving downwards to the limit position, and the cutter assembly is prevented from being held back.

Preferably, the rack is vertically provided with slide rails at two sides of the punching mechanism; the driving mechanism comprises a second driving device and a pair of sliding plates; the sliding plate is correspondingly and slidably arranged on the sliding rail, and the sliding plate is connected with the second driving device through a crank sliding block structure; the cutter assembly is rotatably arranged on the sliding plate through two ends, and the cutter assembly is connected with the sliding plate through an elastic assembly, so that the elastic deflection structure is formed.

Preferably, the sliding plate is provided with a guide hole; the elastic component comprises a guide rod and a spring; the guide rod is fixed on one side of the cutter assembly and is perpendicular to the cutting direction of the cutter assembly; the guide rod penetrates through the guide hole, and the diameter of the guide hole is larger than that of the guide rod; the spring is sleeved on the guide rod, and two ends of the guide rod respectively abut against the cutter assembly and the sliding plate.

Preferably, the rack is provided with a material receiving assembly below the punching mechanism, the material receiving assembly is suitable for height adjustment according to the length of the EVA adhesive film cut by the punching mechanism, and therefore the EVA adhesive film with any cutting length can be received.

Preferably, a plurality of groups of inserting holes are formed in the frame below the punching mechanism, and the inserting holes are arranged at intervals in the vertical direction; the material receiving assembly comprises a plurality of material receiving rods, and the material receiving rods are suitable for being connected with the inserting holes of the corresponding groups in an inserting mode according to the length of the EVA adhesive film cut by the punching mechanism.

Preferably, a correcting assembly is arranged on the feeding side of the feeding mechanism, and comprises a pair of ray devices and a pair of scale rods; the ray devices are arranged on the rack and the positions of the ray devices are adjusted according to the scales of the scale rods, so that the distance between the two ray devices is positioned in the middle of the rack; the EVA adhesive film is suitable for being conveyed between the ray devices, and the distance between the ray devices is equal to the width of the EVA adhesive film, so that the EVA adhesive film is ensured to be placed in the middle of the rack for cutting.

Compared with the prior art, the beneficial effect of this application lies in:

(1) The guide assembly is arranged on the discharging side of the feeding mechanism, so that when the EVA adhesive film is fed to the punching mechanism, the EVA adhesive film can be offset and slide along the guide assembly, the EVA adhesive film can be prevented from being adhered to the feeding mechanism, and the cutting precision of the EVA adhesive film is effectively improved.

(2) Through connecting through the elasticity structure that deflects between cutter unit spare and the actuating mechanism to when the cutter unit spare moves down to extreme position, can avoid taking place to hold the sword, thereby the life of effectual improvement cutter unit spare through the deflection of cutter unit spare.

(3) The material receiving assembly is adjustable in mounting position below the punching mechanism, and the specific position of the material receiving assembly can be adjusted according to the length of an EVA (ethylene vinyl acetate) adhesive film to be cut, so that the material receiving of the EVA adhesive films with different cutting lengths can be facilitated.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the front schematic structural diagram of the utility model with the feeding mechanism omitted.

Fig. 3 is the back structure schematic diagram of the utility model with the feeding mechanism omitted.

Fig. 4 is a schematic structural view of the feeding mechanism of the present invention.

Fig. 5 is an enlarged schematic view of the part a in fig. 4 according to the present invention.

Fig. 6 is a schematic view of the feeding mechanism of the present invention in feeding.

Fig. 7 is a schematic structural view of the middle punching mechanism of the present invention.

Fig. 8 is an enlarged schematic view of the present invention at a portion B in fig. 7.

Fig. 9 is a schematic view of the installation position of the middle detecting component of the present invention.

In the figure: the automatic feeding device comprises a rack 100, an inserting hole 110, a sliding rail 120, a discharging table 130, a feeding mechanism 2, a feeding mechanism 3, a first driving device 31, a roller assembly 32, a driving roller 321, a first groove 3210, a driven roller 322, a second groove 3220, a guide assembly 33, a supporting roller 331, a third groove 3310, an elastic belt 332, a balancing device 34, a lifting device 35, a punching mechanism 4, a driving mechanism 41, a second driving device 411, a transmission rod 412, a connecting rod 413, a sliding plate 414, a guide hole 4140, a cutter assembly 42, an elastic assembly 43, a guide rod 431, a spring 432, an EVA (ethylene vinyl acetate) film 500, a material receiving rod 600, a correcting assembly 7, a ray device 71 and a scale rod 72.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In a preferred embodiment of the present application, as shown in fig. 1 to 9, an EVA automatic cutting device includes a frame 100, a feeding mechanism 2, a feeding mechanism 3, and a punching mechanism 4. The feeding mechanism 2 is installed in front of the frame 100, and the feeding mechanism 2 is wound with a rolled EVA film 500 for cutting. The feeding mechanism 3 and the punching mechanism 4 are adjacently installed on the upper portion of the rack 100, and the feeding mechanism 3 can convey the EVA film 500 wound on the feeding mechanism 2 to the lower portion of the punching mechanism 4, so that the punching mechanism 4 can cut conveniently. Feeding mechanism 3 is provided with guide assembly 33 in the ejection of compact side to the EVA glued membrane 500 of the 3 ejection of compact sides of feeding mechanism can follow guide assembly 33 and carry out the slip that offsets, and then can avoid EVA glued membrane 500 to adhere in feeding mechanism 3, thereby effectual improvement EVA glued membrane 500 cuts the precision.

It will be appreciated that the two sides of the feed mechanism 3 are the feed side and the discharge side, respectively. Wherein, the feeding side refers to the side of the feeding mechanism 2 for feeding materials to the feeding mechanism 3; the discharging side is a side where the feeding mechanism 3 conveys the EVA film 500 to the die cutting mechanism 4.

In this embodiment, as shown in fig. 1, the structure of the feeding mechanism 2 is well known to those skilled in the art, and generally includes a rotating roller, a jacking device and a rotating device; the roller is used for winding the EVA adhesive film 500 to be cut, and the rotating device is used for driving the roller to rotate, so that the EVA adhesive film 500 wound on the roller is released. And, along with the release of winding EVA glued membrane 500, the pay-off distance of EVA glued membrane 500 can change, can lift roller and rotary device through jacking device this moment, and then can compensate the increase of the pay-off distance that causes because the release of EVA glued membrane 500. Wherein, the rotating device can be a rotating air pressure, a rotating hydraulic cylinder, a motor and the like; the jacking device can be a telescopic cylinder, a telescopic oil cylinder, a linear motor and the like.

In this embodiment, as shown in fig. 4 to 6, the rack 100 is provided with a discharge table 130 between the feeding mechanism 3 and the punching mechanism 4. The feeding mechanism 3 comprises a roller assembly 32, the roller assembly 32 can clamp the EVA film 500, and then the EVA film 500 can be dragged along the discharging table 130 to the punching mechanism 4 by the relative rotation of the roller assembly 32. At this time, the guide assembly 33 is disposed on the discharge side of the roller assembly 32 and above the discharge table 130.

Specifically, the feeding mechanism 2 releases the EVA film 500 wound on the roller; simultaneously the roller assembly 32 is tight to EVA glued membrane 500 presss from both sides to the in-process roller assembly 32 that releases is carried out relative rotation at EVA glued membrane 500, and then can carry the EVA glued membrane 500 of release to the below of die-cutting mechanism 4 so that the die-cutting mechanism 4 cuts along blowing platform 130.

It can be understood that, since the discharging side of the roller assembly 32 has no tension effect on the EVA film 500, that is, the EVA film 500 is in a relaxed state at the discharging side of the roller assembly 32. In the conventional cutting device, due to the adhesion of the EVA film 500, the loose EVA film 500 on the discharging side of the roller assembly 32 adheres along with the rotation of the roller assembly 32, so that the length of the EVA film 500 cut by the die cutting mechanism 4 is shortened, and the cut strip of the cut EVA film 500 is not qualified.

Therefore, as shown in fig. 6, by installing the guide assembly 33 on the discharging side of the roller assembly 32, when the EVA film 500 passes through the roller assembly 32, the EVA film 500 is abutted against the guide assembly 33 in the circumferential direction, and then the EVA film 500 is timely separated from the roller assembly 32, so as to avoid the EVA film 500 from adhering to the roller assembly 32, and thus the cutting quality of the EVA film 500 can be effectively improved.

Specifically, as shown in fig. 4 to 6, the roller assembly 32 includes a driving roller 321 and a driven roller 322; the driving roller 321 is positioned below the discharge table 130, and the driven roller 322 is positioned above the discharge table 130. The guide assembly 33 includes a support roller 331 and a plurality of elastic belts 332; the support roller 331 is fixed to the frame 100 and parallel to the driven roller 322; the support roller 331 and the driven roller 322 are connected by an elastic belt 332, so that the EVA film 500 on the discharge side of the roller assembly 32 slides against the elastic belt 332.

It is understood that a plurality of elastic belts 332 may form an abutting plane along the discharging side of the driven roller 322, so that when the EVA film 500 is discharged from between the driving roller 321 and the driven roller 322, the EVA film 500 is supported on the discharging table 130 due to the front portion, so that the EVA film 500 can be adhered only toward the sidewall of the driven roller 322. However, the above-mentioned contact plane exists between the side of the driven roller 322 and the EVA film 500, so that the EVA film 500 cannot be adhered to the driven roller 322, and the EVA film 500 can only slide along the material placing table 130.

In this embodiment, since the driving roller 321 and the driven roller 322 need to rotate relative to each other for the transportation of the EVA film 500, the elastic belt 332 may be shifted during the rotation of the driven roller 322. Therefore, in order to avoid the elastic belt 332 from shifting, as shown in fig. 5 and 6, a plurality of second grooves 3220 are axially spaced from the circumferential sidewall of the driven roller 322, and each elastic belt 332 is correspondingly located in the second groove 3220, so that when the driven roller 322 rotates, the elastic belt 332 is limited by the second grooves 3220, and the elastic belt 332 is ensured not to shift.

Meanwhile, the depth of the second groove 3220 may be set to be greater than or equal to the thickness of the elastic belt 332, so that the elastic belt 332 is flush with or lower than the surface of the driven roller 322, and further the influence of jacking on the transmission of the EVA film 500 due to interference with the elastic belt 332 may be avoided.

Alternatively, the depth of the second groove 3220 may be less than the thickness of the elastic band 332. However, a plurality of first grooves 3210 may be provided at intervals in the axial direction at the circumferential side wall of the drive roller 321, and the positions of the first grooves 3210 correspond to the positions of the second grooves 3220. Therefore, when the EVA film 500 passes between the driving roller 321 and the driven roller 322, the EVA film 500 jacked up by the elastic belt 332 can protrude into the first groove 3210, and further the influence of jacking on the EVA film 500 due to interference with the elastic belt 332 can be avoided.

To further ensure that the elastic belt 332 does not shift during the rotation of the driven roller 322, as shown in fig. 5, the circumferential sidewall of the support roller 331 is provided with a plurality of third grooves 3310 at intervals in the axial direction, the third grooves 3310 corresponding to the positions of the second grooves 3220. So that when the elastic belt 332 is connected, a portion located on the driven roller 322 is located in the second groove 3220 and a portion located on the support roller 331 is located in the third groove 3310; and thus, the elastic belt 332 is kept stable during the rotation of the driven roller 322 by the bidirectional limit.

In this embodiment, as shown in fig. 4, the feeding mechanism 3 further includes a first driving device 31, the first driving device 31 may be connected to an end of the driving roller 321, so that the driving roller 321 is driven by the first driving device 31 to rotate circumferentially, and then the driven roller 322 may rotate synchronously and reversely along with the driving roller 321 through friction forces between the EVA film 500 and the driving roller 321 and the driven roller 322, so as to transport the EVA film 500 to the direction of the die-cutting mechanism 4.

Meanwhile, as shown in fig. 4, the feeding mechanism 3 further includes a lifting device 35 and a balancing device 34. The lifting device 35 is used for lifting or lowering the driven roller 322 so as to ensure that the gap between the driving roller 321 and the driven roller 322 can meet the requirement of conveying the EVA adhesive film 500 with any thickness. The balancing device 34 can be used with the lifting device 35 in a matched mode, the balancing device 34 can be in arc-shaped extrusion fit with the upper side wall of the driven roller 322 along the circumferential direction, the driven roller 322 moves synchronously with the driven roller 322 in the up-and-down moving process, and therefore the driven roller 322 can be guaranteed not to shift in the lifting and lowering processes.

It will be appreciated that the first drive means 31, the lifting means 35 and the balancing means 34 are all prior art and the specific construction and operation are well known to those skilled in the art. The lifting devices 35 may be paired and located at two ends of the driven roller 322, respectively, to ensure the lifting stability of the driven roller 322. There are a plurality of the balancing devices 34, for example, as shown in fig. 4, the number of the balancing devices 34 is two, and two balancing devices 34 are uniformly arranged.

In one embodiment of the present application, as shown in fig. 7 and 8, the die cutting mechanism 4 includes a drive mechanism 41 and a cutter assembly 42. The driving mechanism 41 can drive the cutter assembly 42 to perform vertical reciprocating movement to perform cutting of the EVA film 500. The cutter assembly 42 and the driving mechanism 41 are connected through an elastic deflection structure, so that the cutter assembly 42 deflects through the elastic deflection structure when moving downwards to the limit position, and the cutter assembly 42 can be prevented from being held back.

It can be understood that the term "held knife" refers to a phenomenon that when the cutter assembly 42 moves down to the extreme position, the lower edge of the cutter head of the cutter assembly 42 interferes. Meanwhile, the limit position below the cutter assembly 42 is a position where the cutting head of the cutter assembly 42 just contacts the discharge table 130. Through being connected cutter unit 42 and actuating mechanism 41 through the elasticity structure that deflects in this application to when cutter unit 42 contacts with blowing platform 130, can order about cutter unit 42 through the support counter-force of blowing platform 130 and take place to deflect, and then can prevent that cutter unit 42's tool bit is direct and blowing platform 130 from contacting, thereby can effectual improvement cutter unit 42's life.

In this embodiment, as shown in fig. 7 and 8, the rack 100 is vertically provided with slide rails 120 at both sides of the die-cutting mechanism 4. The driving mechanism 41 includes a second driving device 411 and a pair of sliding plates 414; the two sliding plates 414 are respectively and correspondingly arranged on the sliding rails 120 on the two sides in a sliding manner; meanwhile, the sliding plate 414 and the second driving device 411 are connected through a crank-slider structure, so that the sliding plate 414 can slide vertically along the sliding rail 120 under the driving of the second driving device 411. The cutter assembly 42 is rotatably mounted on the sliding plate 414 through two ends, and the cutter assembly 42 is connected with the sliding plate 414 through the elastic assembly 43, so as to form an elastic deflection structure; therefore, when the sliding plate 414 moves downwards, the cutter assembly 42 can be driven to move downwards synchronously until the cutter assembly 42 contacts the discharging table 130, and the elastic assembly 43 is deflected around the installation position of the sliding plate 414 and compressed under the supporting counterforce of the discharging table 130; after the cutter assembly 42 moves upwards along with the sliding plate 414, the cutter assembly 42 can be reset under the elastic force of the elastic assembly 43, so as to ensure that the cutting edge of the cutter assembly 42 is always vertically downward in the cutting process.

Specifically, the elastic member 43 has various structures, and a preferred structure is shown in fig. 8, in which the elastic member 43 includes a guide rod 431 and a spring 432; the guide rod 431 is fixed to one side of the cutter assembly 42 and perpendicular to the cutting direction of the cutter assembly 42. The slide plate 414 is provided with a guide hole 4140, the guide rod 431 penetrates through the guide hole 4140, and the diameter of the guide hole 4140 is larger than that of the guide rod 431. The spring 432 is sleeved on the guide rod 431, and two ends of the guide rod 431 respectively abut against the cutter assembly 42 and the sliding plate 414. When the cutter assembly 42 contacts the discharge table 130, the cutter assembly 42 can rotate around the installation position under the supporting reaction force of the discharge table 130, and the guide rod 431 can synchronously deflect along with the cutter assembly 42 to abut against the side wall of the guide hole 4140 and bend the spring 432; when the cutter assembly 42 moves upward, the guide rod 431 is urged to deflect coaxially with the guide hole 4140 by the restoring force of the spring 432.

It can be understood that, in order to ensure that the elastic force of the spring 432 is sufficient, the spring 432 may be a rectangular spring, and the contact area of two end surfaces of the rectangular spring is large, so that the extrusion structure of the rectangular spring is stable, so as to ensure that the knife edge of the cutter assembly 42 is kept vertical in a normal state; and the rectangular spring is easier to reset after being bent.

In the present embodiment, as shown in fig. 7, the driving slider structure includes a transmission rod 412 and a pair of links 413; the two connecting rods 413 are eccentrically hinged to two ends of the transmission rod 412, and the other ends of the two connecting rods 413 are hinged to the corresponding sliding plates 414. The transmission rod 412 can be connected with the second driving device 411, so that the transmission rod 412 can rotate under the driving of the second driving device 411, and the transmission rod 412 can pull the sliding plate 414 to slide back and forth vertically along the sliding rail 120 through the connecting rods 413 at the two ends.

It will be appreciated that the second drive means 411 may be connected to the end of the transmission rod 412; since the two ends of the transmission rod 412 need to be connected with the connecting rod 413, the second driving device 411 can be in transmission connection with the middle of the transmission rod 412 through a transmission assembly. The second driving device 411 and the transmission assembly are both in the prior art, a motor may be adopted as the common second driving device 411, and the transmission assembly may be a chain transmission structure or a belt transmission structure.

In one embodiment of the application, as shown in fig. 3, the rack 100 is provided with a material receiving assembly below the die-cutting mechanism 4, the material receiving assembly can perform height adjustment according to the length of the EVA film 500 cut by the die-cutting mechanism 4, and thus it is ensured that the EVA film 500 cut at any length can be received.

It should be noted that, for the EVA film 500 with a shorter length requirement, due to its light weight, if the height of receiving the material after cutting is higher, the cut strip of the EVA film 500 after cutting will flutter in the falling process, and the cut strip of the EVA film 500 after cutting deviates from the receiving component; therefore, for the EVA film 500 with a shorter cutting length, the height of the receiving assembly can be set higher; and to cutting the longer EVA glued membrane 500 of length, can be with the lower of the high setting of connecing the material subassembly to can reduce operating personnel's transport number of times.

Specifically, as shown in fig. 3, a plurality of groups of insertion holes 110 are disposed below the die cutting mechanism 4 in the rack 100, and each group of insertion holes 110 are disposed at intervals in the vertical direction; connect the material subassembly to include a plurality of material poles 600 that connect, connect the length that material pole 600 can be according to the EVA glued membrane 500 that the die-cutting mechanism 4 cut and the spliced eye 110 that corresponds the group to carry out detachable grafting.

In this embodiment, as shown in fig. 9, the straightening assembly 7 is disposed on the feeding side of the feeding mechanism 3, and the straightening assembly 7 includes a pair of ray devices 71 and a pair of scale rods 72. The scale rods 72 are correspondingly arranged at two sides of the rack 100 and extend towards the middle of the rack 100; the ray devices 71 are arranged on the machine frame 100 and the positions of the ray devices are adjusted according to the scales of the scale rods 72 so as to ensure that the distance between the two ray devices 71 is just positioned in the middle of the machine frame 100. When the feeding mechanism 2 feeds the EVA film 500, the EVA film 500 can be conveyed along the ray devices 71, and the distance between the ray devices 71 is exactly equal to the width of the EVA film 500, so as to ensure that the EVA film 500 can be placed in the middle of the rack 100 for cutting at the position of the die-cutting mechanism 4; and then guarantee that the slitting of the EVA glued membrane 500 after cutting can just in time drop to the middle part that connects the material subassembly to avoid the EVA glued membrane 500 after cutting to cause in connecing the landing of material subassembly owing to be partial to one side.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. An EVA automatic cutting device comprises a frame, a feeding mechanism and a punching mechanism; the feeding mechanism and the punching mechanism are adjacently installed on the rack, and the feeding mechanism is suitable for conveying the EVA adhesive film wound on the feeding mechanism to the position below the punching mechanism for cutting; the method is characterized in that: the feeding mechanism is provided with a guide assembly on the discharging side, and the EVA adhesive film on the discharging side of the feeding mechanism is suitable for sliding against the guide assembly.

2. The EVA automatic trimming device of claim 1, wherein: the frame is provided with a discharging platform between the feeding mechanism and the punching mechanism; the feeding mechanism comprises a roller assembly; the roller assembly is suitable for clamping the EVA adhesive film and rotating relatively, so that the EVA adhesive film is dragged along the discharging table to the punching mechanism; the guide assembly is arranged on the discharging side of the roller assembly and located above the discharging platform.

3. The EVA automatic cutting device according to claim 2, characterized in that: the roller assembly comprises a driven roller and a driving wheel which are positioned above and below the discharging table; the guide assembly comprises a support roller and a plurality of elastic belts; the supporting roller is arranged in parallel to the driven roller; the supporting roller and the driven roller are connected through the elastic belt, so that the EVA adhesive film on the discharge side of the roller assembly slides along the elastic belt in an abutting mode.

4. The EVA automatic cutting device according to claim 3, wherein: a plurality of second grooves are formed in the circumferential side wall of the driven roller at intervals along the axial direction, and each elastic belt is correspondingly located in each second groove.

5. The EVA automatic cutting device according to any one of claims 1 to 4, wherein: the punching mechanism comprises a driving mechanism and a cutter assembly; the driving mechanism is suitable for driving the cutter assembly to vertically reciprocate so as to cut the EVA adhesive film; the cutter assembly and the driving mechanism are connected through an elastic deflection structure, so that the cutter assembly deflects through the elastic deflection structure when moving downwards to the limit position.

6. The EVA automatic cutting device according to claim 5, wherein: sliding rails are vertically arranged on the machine frame on two sides of the punching mechanism; the driving mechanism comprises a second driving device and a pair of sliding plates; the sliding plate is correspondingly and slidably mounted on the sliding rail, and the sliding plate is connected with the second driving device through a crank block structure; the cutter assembly is rotatably arranged on the sliding plate through two ends, and the cutter assembly is connected with the sliding plate through an elastic assembly, so that the elastic deflection structure is formed.

7. The EVA automatic cutting device according to claim 6, wherein: the sliding plate is provided with a guide hole; the elastic component comprises a guide rod and a spring; the guide rod is fixed on one side of the cutter assembly and is perpendicular to the cutting direction of the cutter assembly; the guide rod penetrates through the guide hole, and the diameter of the guide hole is larger than that of the guide rod; the spring is sleeved on the guide rod, and two ends of the guide rod respectively abut against the cutter assembly and the sliding plate.

8. The EVA automatic cutting device according to claim 1, characterized in that: the frame is arranged below the punching mechanism and is provided with a material receiving assembly, and the material receiving assembly is suitable for height adjustment according to the length of the EVA adhesive film cut by the punching mechanism.

9. The EVA automatic trimming apparatus of claim 8, wherein: a plurality of groups of plug holes are arranged below the punching mechanism of the frame, and the plug holes are arranged at intervals along the vertical direction; the material receiving assembly comprises a plurality of material receiving rods, and the material receiving rods are suitable for being inserted into the corresponding groups of the inserting holes according to the lengths of the EVA adhesive films cut by the punching mechanism.

10. The EVA automatic trimming apparatus of claim 8, wherein: a correcting component is arranged on the feeding side of the feeding mechanism and comprises a pair of ray devices and a pair of scale rods; the ray devices are arranged on the rack and the positions of the ray devices are adjusted according to the scales of the scale rods, so that the distance between the two ray devices is positioned in the middle of the rack; the EVA adhesive film is suitable for being conveyed among the ray devices, and the distance between the ray devices is equal to the width of the EVA adhesive film.

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