Automatic fixed-length cutting and discharging mechanism for roll film

Abstract

The invention discloses an automatic fixed-length cutting and discharging mechanism for a roll film, and relates to the technical field of protective film cutting, the automatic fixed-length cutting and discharging mechanism has the advantage of cutting the protective film into the required size, and the automatic fixed-length cutting and discharging mechanism for the roll film comprises a film roll assembly used for discharging the protective film; the cutting assembly is located above the film roll assembly; and the feeding assembly is used for vertically and upwards conveying the protective film unwound by the film winding assembly and then horizontally conveying the protective film to the cutting assembly for cutting.

Description

Technical Field

[0001] The invention relates to the technical field of protective film cutting, in particular to an automatic fixed-length cutting and unloading mechanism for a rolled film. Background Art

[0002] The main functions of the protective film of semiconductor packaging products include moisture-proof, waterproof, anti-corrosion and chip protection. The protective film plays a vital role in the semiconductor packaging process. Before use, the protective film needs to be divided into rectangular sheets of the required size and then placed on the surface of the product plastic packaging cavity. Therefore, a cutting device is needed to solve the problem of dividing the protective film into the required size. Therefore, the present invention provides a solution. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a roll film automatic fixed-length cutting and unloading mechanism, which has the advantage of cutting the protective film into required sizes.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a roll film automatic fixed-length cutting and unloading mechanism, comprising a film roll assembly, wherein the film roll assembly is used to unload a protective film; a cutting assembly located above the film roll assembly; It also includes a feeding component, which vertically transfers the protective film released by the film roll component upward and then horizontally transports it to the cutting component for cutting.

[0005] By adopting the above technical solution, the film roll assembly releases the protective film on the film roll, and transports it to the cutting assembly for cutting by the feeding assembly. At this time, the cutting assembly is located above the film roll assembly, which saves space and facilitates cutting the protective film into required sizes.

[0006] Preferably, the film roll assembly includes a vertical plate, a discharge shaft rotatably connected to the vertical plate and used for inserting the film roll, the discharge shaft is driven by a motor arranged on the vertical plate, and a limit piece for limiting the position of the film roll is provided on the discharge shaft.

[0007] Preferably, the feeding assembly includes a film-supporting rod rotatably arranged on a vertical plate and located on one side of the film roll, and also includes a horizontal plate arranged on the upper end of the vertical plate, the horizontal plate is provided with an opening for the protective film released from the film roll to pass through to the top of the horizontal plate, and the horizontal plate is rotatably provided with a guide roller parallel to the film-supporting rod and staggered on the plate surface below the opening; the upper end surface of the horizontal plate is provided with two vertical plates opposite to each other on the left and right, the upper ends of the two vertical plates are connected by a horizontally distributed horizontal plate, and a steering roller is rotatably connected to one side wall of the horizontal plate, and the steering roller is parallel to the guide roller; The upper surface of the horizontal plate is slidably connected to a support arm, and the support arm is provided with a fixing piece for fixing one end of the protective film; The protective film on the film roll passes around the film supporting rod and extends vertically toward the opening, and passes through the opening from one side of the guide roller. After passing through the opening vertically, it passes around the steering roller and extends horizontally away from the steering roller, and one end of the protective film distributed horizontally is fixed by a fixing part, and the sliding direction of the support arm is along the horizontal distribution direction of the protective film.

[0008] Preferably, the cutting assembly includes a first barless cylinder horizontally arranged between two vertical plates, a mounting plate is provided on the slide seat of the first barless cylinder, the upper end of the mounting plate extends out of the upper end surface of the slide seat of the first barless cylinder, and a knife mounting plate is provided above the mounting plate, one side of the horizontal plate extends above the knife mounting plate, and a film cutting blade is provided on the side facing the protective film, at this time, the knife mounting plate is located on one side of the protective film, and there is a gap between the film cutting blade and the horizontal plate.

[0009] When the film cutting blade cuts the film, a pressing piece for fixing the protective film is provided on the vertical plate.

[0010] Preferably, the pressing member comprises a connecting plate connecting two side surfaces of the vertical plates, the connecting plate is provided with two L-shaped support plates on the plate surface facing away from the vertical plate, the two support plates are respectively located on both sides of the protective film, the horizontal parts of the two support plates are connected to the connecting plate, the vertical parts are distributed away from the connecting plate and are hinged with a cylinder, and an L-shaped swing rod is hinged on the piston rod of the cylinder; Two opposing support seats are provided on one side wall of the transverse plate, and two ends of the steering roller are rotatably connected to the support seats respectively. The two support seats are rotatably connected with rotating shafts on the opposite side surfaces. The swing arms on the two cylinders are rotatably connected to the two rotating shafts at the ends away from the cylinders. An L-shaped transition rod is fixedly provided on the two rotating shafts. The vertical portion of the transition rod is fixedly connected to the rotating shaft, and the horizontal portion is located above the support seat and is provided with an extension rod extending toward the transverse plate. The two extension rods are connected by a pressure rod, and the lower end of the pressure rod is provided with an elastic pressure block distributed along the length direction of the pressure rod. When the piston rod of the cylinder is pushed out, the elastic pressure block presses the protective film against the upper end surface of the transverse plate. The horizontal plate is provided with a plurality of columns on the side of the film cutting blade away from the elastic pressure block, and a suction plate is provided on the upper end of each of the columns. The length direction of the suction plate extends along the horizontal pulling direction of the protective film, and the upper end surface of the suction plate is used for placing the protective film and is provided with a plurality of suction holes. A ventilation cavity connected to the various suction holes is provided in the suction plate, and the ventilation cavity is connected to a vacuum pump or an exhaust fan through a hose provided on the suction plate.

[0011] Preferably, the upper end surface of the horizontal plate is provided with a second barless cylinder extending in the horizontal direction of the protective film, and the support arm is arranged on the slide seat of the second barless cylinder; The fixing member includes a mounting block arranged at a height position where the support arm is higher than the horizontal part of the protective film, a pull plate distributed in the vertical direction is distributed on the mounting block, a lower support plate extending in the horizontal direction is provided at the lower end of the pull plate, the lower support plate is distributed along the length direction of the pull plate, and the length direction of the pull plate is distributed along the width direction of the protective film, an upper support plate is slidably connected to the upper part of the pull plate in the vertical direction, the upper support plate is provided with an elastic pressure block 2 on the side facing the lower support plate, the elastic pressure block 2 is distributed along the length direction of the upper support plate, the upper and lower support plates are both distributed toward the horizontal plate, a driving member is provided on the mounting block for driving the upper and lower support plates to clamp one end of the protective film, and the driving member also drives the pull plate to move up and down in the vertical direction.

[0012] Preferably, the driving member includes a left side plate arranged on the mounting block, the left side plate and the pull plate are relatively distributed, the left side plate is provided with a left sliding cylinder, the pull plate is provided with a right sliding cylinder, the slides of the left sliding cylinder and the right sliding cylinder are connected by a push plate, the push plate is horizontally distributed and fixedly connected to the upper end of the upper abutment plate, and the pull plate is fixedly connected to the cylinder body of the right sliding cylinder.

[0013] Preferably, the pull plate is provided with a brush at the lower end of a side surface facing away from the transverse plate.

[0014] Preferably, a laterally distributed guide rail is provided between the two vertical plates, a movable plate slidably connected to the guide rail is provided on the upper end of the mounting plate, the knife mounting plate is slidably connected to the movable plate in a horizontal direction, a baffle is provided on one side of the movable plate, two compression springs are provided on the baffle, one end of the compression spring away from the baffle is fixedly connected to one side of the knife mounting plate, a guide rod is provided on the baffle to penetrate into the compression spring, and a sliding groove is provided on the knife mounting plate for one end of the guide rod to penetrate into.

[0015] Preferably, the knife mounting plate is provided with a positioning plate extending downward on a side away from the movable plate, and the mounting plate is provided with a U-shaped detection plate on a side away from the movable plate, the positioning plate is located on one side of the detection plate, and when the compression spring is compressed, the positioning plate moves into the detection plate, and infrared sensors are provided on opposite sides of the detection plate; The transverse plate is provided with a detection member for detecting whether the film cutting blade is installed on the blade mounting plate.

[0016] The beneficial effect of the present invention is that the film roll assembly releases the protective film on the film roll, and is transported by the feeding assembly to the cutting assembly for cutting. At this time, the cutting assembly is located above the film roll assembly, which saves space and facilitates cutting the protective film into required sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of this embodiment; Figure 2 This is a schematic diagram of the structure of the film support rod in this embodiment; Figure 3 This is a schematic diagram of the structure of the left slide cylinder and the right slide cylinder of this embodiment; Figure 4 This is a schematic diagram of the structure of the mounting plate of this embodiment; Figure 5 This is a schematic diagram of the structure of the knife-mounting plate of this embodiment; Figure 6 This is a schematic diagram of the structure of the present embodiment for reflecting that the knife-mounting plate is equipped with a film-cutting blade; Figure 7 It is a schematic diagram of the structure of the suction plate of this embodiment.

[0019] Description of reference numerals: In the figure: 1. Film roll assembly; 11. Protective film; 12. Vertical plate; 121. Discharging shaft; 122. Motor; 13. Second retaining ring; 131. Clamp; 2. Cutting assembly; 21. First barless cylinder; 22. Mounting plate; 221. Knife plate; 222. Film cutting blade; 23. Connecting plate; 231. Support plate; 232. Cylinder one; 233. Swing rod; 24. Support seat; 241. Shaft; 242. Transition rod; 243. Extension rod; 244. Pressure rod; 245. Elastic pressure block one; 25. Column; 251. Suction plate; 252. Suction hole; 253. Ventilation cavity; 26. Second barless cylinder; 27. Mounting block; 271. Pull plate; 272. Lower abutment plate; 273. Upper abutment plate; 274. Elastic pressure block 2; 28. Left side plate; 281. Left slide cylinder; 282. Right slide cylinder; 283. Push plate; 29. ​​Brush; 291. Guide rail; 292. Moving plate; 293. Baffle; 294. Compression spring; 295. Guide rod; 296. Slide groove; 297. Positioning plate; 298. Detection plate; 3. Feeding assembly; 31. Film supporting rod; 32. Horizontal plate; 321. Opening; 322. Guide roller; 33. Vertical plate; 331. Horizontal plate; 332. Steering roller; 34. Support arm; 35. Detection cover; 36. Through-beam photoelectric sensor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] A film roll automatic fixed length cutting and unloading mechanism, such as Figure 1 , comprising a film roll assembly 1, the film roll assembly 1 is used to release a protective film 11; A cutting assembly 2 located above the film roll assembly 1; It also includes a feeding assembly 3, which vertically transfers the protective film 11 released by the film roll assembly 1 upward and then horizontally transports it to the cutting assembly 2 for cutting.

[0022] like Figure 1 The film roll assembly 1 releases the protective film 11 on the film roll, and is transported to the cutting assembly 2 by the feeding assembly 3 for cutting. At this time, the cutting assembly 2 is located above the film roll assembly 1, which saves space and facilitates cutting the protective film 11 into the required size.

[0023] like Figure 1 and Figure 2 The film roll assembly 1 includes a vertical plate 12, a feeding shaft 121 rotatably connected to the vertical plate 12 and used for inserting the film roll, the feeding shaft 121 is driven by a motor 122 arranged on the vertical plate 12, and a limiter is arranged on the feeding shaft 121 to limit the position of the film roll. After the personnel put the film roll on the feeding shaft 121, the limiter limits the position of the film roll, so that the film roll releases the protective film 11 when the motor 122 drives the feeding shaft 121 to rotate; the limiter includes a retaining ring 1 fixedly arranged on the feeding shaft 121 and placed close to the vertical plate 12, and a retaining ring 2 13 sleeved on the feeding shaft 121, the retaining ring 2 13 can be moved on the feeding shaft 121, and when the film roll needs to be placed, the retaining ring 2 13 is moved from the feeding shaft 121 to the feeding shaft 121. The material shaft 121 is removed, and the film roll is put in. Then, the retaining ring 13 is put into the material discharging shaft 121 to limit the film roll between the retaining ring 13 and the retaining ring 1. At this time, in order to limit the position of the retaining ring 13, a clamp 131 is provided on the material discharging shaft 121. The position of the clamp 131 is located on the side of the retaining ring 13 away from the film roll, thereby limiting the movement of the retaining ring 13 away from the retaining ring 1. The retaining ring 1 and the retaining ring 13 are both against the film cylinder wound by the film roll. The operation is simple, and the personnel only need to install the material roll on the material discharging shaft; and the use process reduces the contact of personnel, which can effectively reduce the pollution of materials caused by the operation process.

[0024] like Figure 2 and Figure 3The feeding assembly 3 includes a film-supporting rod 31 rotatably arranged on the vertical plate 12 and located on one side of the film roll, the height of the film-supporting rod 31 is lower than the height of the unloading shaft 121 and is parallel to the unloading shaft 121, the feeding assembly 3 also includes a horizontal plate 32 arranged at the upper end of the vertical plate 12, the horizontal plate 32 is provided with an opening 321 for the protective film 11 unloaded from the film roll to pass through the upper part of the horizontal plate 32, the horizontal plate 32 is rotatably provided with a guide roller 322 parallel to the film-supporting rod 31 and staggered on the plate surface below the opening 321, that is, the guide roller 322 and the film-supporting rod 31 are respectively located on both sides of the protective film 11; the upper end surface of the horizontal plate 32 is provided with two vertical plates 33 opposite to each other on the left and right, the upper ends of the two vertical plates 33 are connected by a horizontally distributed horizontal plate 331, and a steering roller 332 is rotatably connected to one side wall of the horizontal plate 331, and the steering roller 332 is parallel to the guide roller 322; like Figure 2 and Figure 3 The upper end surface of the horizontal plate 32 is slidably connected to a support arm 34, and the support arm 34 is provided with a fixing piece for fixing one end of the protective film 11; like Figure 2 and Figure 3 The protective film 11 on the film roll passes around the film supporting rod 31 and extends vertically toward the opening 321, and passes through the opening 321 from one side of the guide roller 322, and then passes through the opening 321 vertically and passes around the steering roller 332 to extend horizontally away from the steering roller 332, and the horizontal end of the protective film 11 is fixed by the fixing part, and the sliding direction of the support arm 34 is along the horizontal distribution direction of the protective film 11, so that when the support arm 34 moves, the fixing part drives the horizontal end of the protective film 11 to move, so as to facilitate the pulling out of the protective film 11 released on the discharge shaft 121.

[0025] like Figure 2 and Figure 4 The cutting assembly 2 includes a first barless cylinder 21 horizontally arranged between two vertical plates 33, a mounting plate 22 is provided on the slide seat of the first barless cylinder 21, the upper end of the mounting plate 22 extends out of the upper end surface of the slide seat of the first barless cylinder 21, and a knife plate 221 is provided above the mounting plate 22, one side of the horizontal plate 331 extends above the knife plate 221, and a film cutting blade 222 is provided on the side facing the protective film 11, and the knife plate 221 is located on one side of the protective film 11 (such as Figure 5 and Figure 6 ), there is a gap between the film cutting blade 222 and the horizontal plate 331, the gap is 5mm-10mm, the purpose is to facilitate the subsequent fixing parts to clamp the cut end of the protective film; like Figure 2 and Figure 4 When the film cutting blade 222 cuts the film, a clamping member is provided on the vertical plate 33 to fix the protective film 11.

[0026] like Figure 2 and Figure 4 When the protective film 11 needs to be cut, the pressing part presses the protective film 11, and the first barless cylinder 21 drives the slide to move, so that the film cutting blade 222 moves toward the protective film 11, thereby facilitating the film cutting blade 222 to cut the protective film 11. The moving direction of the film cutting blade 222 is along the width direction of the protective film 11.

[0027] like Figure 3 and Figure 4 The pressing member includes a connecting plate 23 connecting one side of two vertical plates 33. The connecting plate 23 is provided with two L-shaped supporting plates 231 on the plate surface away from the vertical plate 33. The two supporting plates 231 are respectively located on both sides of the width direction of the protective film 11. The horizontal parts of the two supporting plates 231 are connected to the connecting plate 23, and the vertical parts are distributed away from the connecting plate 23 and are hinged with a cylinder 232. The piston rod of the cylinder 232 is hinged with an L-shaped swing rod 233. like Figure 3 and Figure 4 Two opposing support seats 24 are provided on one side wall of the horizontal plate 331, and the two ends of the steering roller 332 are rotatably connected to the support seats 24 respectively. The two support seats 24 are rotatably connected with the rotating shaft 241 on the opposite side surfaces. The swing rods 233 on the two cylinders 232 are rotatably connected to the two rotating shafts 241 at the ends away from the cylinders 232. L-shaped transition rods 242 are fixedly provided on the two rotating shafts 241. The vertical part of the transition rod 242 is fixedly connected to the rotating shaft 241, and the horizontal part is located above the support seat 24 and is provided with a transition rod 242 extending toward the horizontal plate 331. An extension rod 243 extends toward the left, and the two extension rods 243 are connected by a pressure rod 244. The lower end of the pressure rod 244 is provided with an elastic pressure block 245 distributed along the length direction of the pressure rod 244. When the piston rod of the cylinder 232 is pushed out, the elastic pressure block 245 presses the protective film 11 against the upper end surface of the cross plate 331, and at this time, the protective film 11 on one side of the film cutting blade 222 is fixed; in addition, one cylinder 232 can also be set, and the transition rod 242 is still set. At this time, the pressure rod 244 is driven by a cylinder 2 to press the protective film 11, thereby meeting different needs.

[0028] like Figure 3 and Figure 4 In order to fix the protective film 11 on the other side of the film cutting blade 222, the horizontal plate 32 is provided with a plurality of columns 25 on the side of the film cutting blade 222 away from the elastic pressing block 245. A suction plate 251 is provided at the upper end of each column 25. The length direction of the suction plate 251 extends along the horizontal pulling direction of the protective film 11. The width of the suction plate 251 is greater than the width of the protective film 11. The upper end surface of the suction plate 251 is provided with a plurality of suction holes 252 for placing the protective film 11. A ventilation cavity 253 (such as Figure 7), the ventilation cavity 253 is connected to a vacuum machine or a blower through a hose disposed on the suction plate 251. At this time, the blower or the vacuum machine evacuates air from the ventilation cavity 253, thereby generating suction force on the protective film 11 placed on the suction plate 251, thereby fixing the protective film 11 on both sides of the film cutting blade 222.

[0029] like Figure 3 and Figure 4 A second barless cylinder 26 extending in the horizontal direction of the protective film 11 is provided on the upper end surface of the horizontal plate 32, and the support arm 34 is arranged on the sliding seat of the second barless cylinder 26; the second barless cylinder 26 drives the support arm 34 to move back and forth, so that the fixing part on the support arm 34 drives the horizontal end of the protective film 11 to move.

[0030] like Figure 1 and Figure 3 The fixing member includes a mounting block 27 arranged at a height position where the support arm 34 is higher than the horizontal part of the protective film 11, and a pull plate 271 distributed in the vertical direction is distributed on the mounting block 27, and a lower support plate 272 extending in the horizontal direction is provided at the lower end of the pull plate 271, and the lower support plate 272 is distributed along the length direction of the pull plate 271, and the length direction of the pull plate 271 is distributed along the width direction of the protective film 11, and an upper support plate 273 is slidably connected to the pull plate 271 in the vertical direction, and the upper support plate 273 is provided with an elastic pressure block 274 on the side facing the lower pressure plate 272, and the elastic pressure block 274 is distributed along the length direction of the upper support plate 273, and the upper and lower pressure plates 273 and 272 are both distributed toward the horizontal plate 331, and a driving member for driving the upper and lower pressure plates 273 and 272 to clamp one end of the protective film 11 is provided on the mounting block 27, and the driving member also drives the pull plate 271 to move up and down in the vertical direction. The first elastic pressing block 245 and the second elastic pressing block 274 can both be made of silicone, but are not limited thereto.

[0031] like Figure 1 and Figure 3 Working principle: Step 1: At the beginning, one end of the protective film 11 on the film roll needs to be manually passed around the film support rod 31 and then vertically extended toward the opening 321, and pass through the opening 321 from one side of the guide roller 322, and then pass through the opening 321 vertically and pass through the steering roller 332 to horizontally stretch away from the steering roller 332. At this time, the horizontally distributed end of the protective film 11 is fixed by the fixing member, that is, one end of the protective film 11 is placed between the upper abutment plate 273 and the lower abutment plate 272, and the driving member drives the upper abutment plate 273 and the lower abutment plate 272 to clamp one end of the protective film 11; Step 2: Then the second non-bar cylinder 26 starts to work so that the fixing member drives one end of the protective film 11 to move to the side of the suction plate 251 away from the horizontal plate 331; Step 3: The driving member drives the pulling plate 271 to move downward, so that the protective film 11 is attached to the suction plate 251 and the cross plate 331, and the suction plate 251 absorbs the protective film 11 on the suction plate 251 through each suction hole 252, and at the same time, the piston rod of the cylinder 1 232 is pushed out, so that the swing rod 233 drives the rotating shaft 241 to rotate, so that the rotating shaft 241 drives the transition rod 242 and the extension rod 243 to rotate, so that the elastic pressing block 1 245 on the extension rod 243 presses the protective film 11 against the upper end surface of the cross plate 331; at this time, the protective films 11 on both sides of the film cutting blade 222 are fixed, and the first barless cylinder 21 drives the slide seat to move, so that the film cutting blade 222 moves toward the protective film 11, thereby facilitating the film cutting blade 222 to cut the protective film 11; Step 4: After the cutting is completed, the film cutting blade 222 moves to one side of the protective film 11, so that the film cutting blade 222 is facing the side of the protective film 11. Since there is a gap between the film cutting blade 222 and the horizontal plate 331, the gap is 5mm-10mm, so one end of the cut protective film 11 extends out of the horizontal plate 331 by 5mm-10mm, so that the support arm 34 is driven by the second barless cylinder 26 to move the fixing part to the end of the cut protective film 11, so that the fixing part can clamp one end of the protective film 11 again, and then repeat the second and third steps to achieve continuous cutting. Fixed-length cutting and automatic cutting can be achieved.

[0032] like Figure 1 and Figure 3 The driving member includes a left side plate 28 arranged on the mounting block 27. The left side plate 28 and the pull plate 271 are relatively distributed. A left slide cylinder 281 is provided on the left side plate 28, and a right slide cylinder 282 is provided on the pull plate 271. The slides of the left slide cylinder 281 and the right slide cylinder 282 are connected by a push plate 283. The push plate 283 is horizontally distributed and fixedly connected to the upper end of the upper abutment plate 273. The pull plate 271 is fixedly connected to the cylinder body of the right slide cylinder 282. At this time, there is no connection relationship between the pull plate 271 and the mounting block 27, and there is a gap. It is only fixed on the right slide cylinder 282. The left slide cylinder 281 and the right slide cylinder 282 are purchased from SMC with model MXQ12-10-M9N.

[0033] like Figure 1 and Figure 3 Working principle of the driving part: when it is necessary to drive the upper support plate 273 and the lower support plate 272 to contact each other and thus clamp the protective film 11, the left slide cylinder 281 does not move, and the slide of the right slide cylinder 282 moves downward, but since the left slide cylinder 281 does not move, the push plate 283 cannot move, causing the cylinder body of the right slide cylinder 282 to move upward, thereby driving the pull plate 271 to move upward, causing the lower support plate 272 to move in the direction of the upper support plate 273, thereby facilitating the clamping of the protective film 11.

[0034] When the driving member is required to drive the pull plate 271 to move up and down, the slide of the left slide cylinder 281 slides downward, and at this time the push plate 283 moves downward, and the right slide cylinder 282 on the push plate 283 and the pull plate 271 move downward together, and then the edge pull plate 271 moves to the side of the suction plate 251 away from the cross plate 331, so that the pull plate 271 moves downward, which is convenient for the protective film 11 to be placed on the suction plate 251 and the cross plate 331.

[0035] like Figure 1 The pull plate 271 is provided with a brush 29 at the lower end of the side away from the horizontal plate 331. The purpose of the brush 29 is to be driven by the pull plate 271 to move back and forth on the suction plate 251 before cutting the protective film 11, so as to facilitate cleaning of the suction plate 251 and reduce the impact of foreign matter on the negative pressure vacuum effect. At this time, there is a gap between the suction plate 251 and the horizontal plate 331 to facilitate the film cutting blade 222 to move back and forth to cut the protective film 11.

[0036] like Figure 4In order to facilitate the replacement of the film cutting blade 222, the film cutting blade 222 and the knife mounting plate 221 are detachably connected by bolts. Therefore, there is a situation where the film cutting blade 222 is not installed. At this time, a horizontally distributed guide rail 291 is provided between the two vertical plates 33, and a moving plate 292 is provided at the upper end of the mounting plate 22 to be slidably connected to the guide rail 291. The knife mounting plate 221 is slidably connected to the moving plate 292 in the horizontal direction. A sliding block is provided on the knife mounting plate 221, and a horizontally distributed guide rail 291 is provided on the moving plate 292 for the sliding block to slide. The movable plate 292 is provided with a baffle plate 293 on one side of the knife mounting plate 221, and two compression springs 294 are provided on the baffle plate 293. One end of the compression spring 294 away from the baffle plate 293 is fixedly connected to one side of the knife mounting plate 221. The elastic force of the compression spring 294 makes the sliding block on the knife mounting plate 221 contact the groove wall of the sliding groove, so that the film cutting blade 222 can cut the protective film 11. When the film cutting blade 222 is not installed, the knife mounting plate 221 will contact the protective film 11, and the resulting resistance will The compression spring 294 is deformed, so that the knife plate 221 moves on the moving plate 292 to protect the protective film 11. At this time, the compression spring 294 and the baffle plate 293 are located on the side of the knife plate 221 away from the film cutting blade 222, that is, the compression spring 294 exerts an extrusion force on the knife plate 221, which facilitates the film cutting blade 222 on the knife plate 221 to cut the protective film 11. That is, when the film cutting blade 222 on the knife plate 221 cuts the protective film 11, the first barless cylinder 21 drives the knife plate 221 to move. The knife plate 221 will not move unless the film cutting blade 222 is not installed. When the first barless cylinder 21 drives the knife plate 221 to move toward the protective film 11, the knife plate 221 conflicts with the protective film 11 and cannot cut. At this time, the protective film 11 reacts on the knife plate 221, so that the knife plate 221 squeezes the compression spring 294, causing the compression spring 294 to deform, thereby protecting the protective film 11. In addition, the film cutting blade 222 cannot cut the protective film 11 after being passivated. The above structure can also protect the protective film 11.

[0037] like Figure 4 The baffle plate 293 is provided with a guide rod 295 that penetrates into the compression spring 294, and the knife plate 221 is provided with a slide groove 296 for one end of the guide rod 295 to penetrate. The setting of the guide rod 295 is conducive to the deformation of the compression spring 294 and plays a guiding role in the movement of the knife plate 221.

[0038] like Figure 4, the knife-mounting plate 221 is provided with a positioning plate 297 extending downward on the side facing away from the movable plate 292, and the mounting plate 22 is provided with a U-shaped detection plate 298 on the side facing away from the movable plate 292, and the positioning plate 297 is located on one side of the detection plate 298. When the compression spring 294 is compressed, the positioning plate 297 moves into the detection plate 298, and infrared sensors are provided on the opposite sides of the detection plate 298, that is, the infrared sensor includes an infrared receiver and an infrared transmitter arranged on the opposite sides of the detection plate 298. When the positioning plate 297 moves into the detection plate 298, the infrared receiver cannot receive the signal sent by the infrared transmitter, thereby indicating that the film cutting blade 222 is not installed, and the infrared sensor controls the first barless cylinder 21 to stop working; like Figure 4 , a detection member for detecting whether the film cutting blade 222 is installed on the knife mounting plate 221 is provided on the cross plate 331. The detection member includes a U-shaped detection cover 35 arranged on the cross plate 331, one vertical side of the detection cover 35 is connected to the cross plate 331, and the other vertical side extends to one side of the cross plate 331 and is distributed opposite to the cross plate 331. At this time, after the knife mounting plate 221 and the film cutting blade 222 are moved into the detection cover 35, the detection cover 35 is provided with a through-beam photoelectric sensor 36 for detecting whether there is a film cutting blade 222 relative to the vertical outer wall. The light emitted by the through-beam photoelectric sensor 36 is in the detection cover. When the knife mounting plate 221 and the film cutting blade 222 are moved into the detection cover 35, the film cutting blade 222 blocks the light of the through-beam photoelectric sensor 36, and is then used to detect whether the film cutting blade 222 is installed in place. In addition, one end of the detection cover 35 connected to the horizontal plate 331 can also be slidably connected to the horizontal plate 331 through a slide plate, and the position of the detection cover 35 is fixed by a locking screw set on the slide plate. At this time, it is convenient to adjust the position of the detection cover 35 to the protective film 11 to meet the cutting requirements of protective films 11 of different widths.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A roll film automatic fixed-length cutting and unloading mechanism, characterized in that: It comprises a film roll assembly (1), wherein the film roll assembly (1) is used to release a protective film (11); A cutting assembly (2) located above the film roll assembly (1); It also comprises a feeding assembly (3), wherein the feeding assembly (3) vertically transfers the protective film (11) released by the film roll assembly (1) upwards and then transports it horizontally to the cutting assembly (2) for cutting.

2. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 1, characterized in that: The film roll assembly (1) comprises a vertical plate (12), a material discharge shaft (121) rotatably connected to the vertical plate (12) and used for inserting the film roll, the material discharge shaft (121) being driven by a motor (122) arranged on the vertical plate (12), and a limiting member for limiting the position of the film roll is provided on the material discharge shaft (121).

3. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 1 or 2, characterized in that: The feeding assembly (3) comprises a film-supporting rod (31) rotatably arranged on a vertical plate (12) and located on one side of a film roll, and also comprises a horizontal plate (32) arranged at the upper end of the vertical plate (12), the horizontal plate (32) being provided with an opening (321) for allowing the protective film (11) released from the film roll to pass through to the top of the horizontal plate (32), and the horizontal plate (32) being rotatably provided with a guide roller (322) parallel to the film-supporting rod (31) and staggered on the plate surface below the opening (321); the upper end surface of the horizontal plate (32) is provided with two vertical plates (33) opposite to each other on the left and right, the upper ends of the two vertical plates (33) being connected by a horizontally distributed horizontal plate (331), and a steering roller (332) being rotatably connected to a side wall of the horizontal plate (331), and the steering roller (332) is parallel to the guide roller (322); The upper end surface of the horizontal plate (32) is slidably connected to a support arm (34), and the support arm (34) is provided with a fixing piece for fixing one end of the protective film (11); The protective film (11) on the film roll passes around the film support rod (31) and extends vertically in the direction of the opening (321), and passes through the opening (321) from one side of the guide roller (322), and then passes through the opening (321) vertically and passes around the steering roller (332) and extends horizontally away from the steering roller (332), and one end of the protective film (11) distributed horizontally is fixed by a fixing member, and the sliding direction of the support arm (34) is along the horizontal distribution direction of the protective film (11).

4. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 3, characterized in that: The cutting assembly (2) comprises a first barless cylinder (21) horizontally arranged between two vertical plates (33); a mounting plate (22) is provided on the slide seat of the first barless cylinder (21); the upper end of the mounting plate (22) extends out of the upper end surface of the slide seat of the first barless cylinder (21); a knife plate (221) is provided above the mounting plate (22); one side of a horizontal plate (331) extends above the knife plate (221); and a film cutting blade (222) is provided on the side facing the protective film (11); at this time, the knife plate (221) is located on one side of the protective film (11), and there is a gap between the film cutting blade (222) and the horizontal plate (331); When the film cutting blade (222) cuts the film, a clamping member for fixing the protective film (11) is provided on the vertical plate (33).

5. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 4, characterized in that: The clamping member comprises a connecting plate (23) connecting one side of two vertical plates (33); the connecting plate (23) is provided with two L-shaped support plates (231) on a plate surface facing away from the vertical plates (33); the two support plates (231) are respectively located on two sides of the protective film (11); the horizontal parts of the two support plates (231) are connected to the connecting plate (23); the vertical parts are distributed away from the connecting plate (23) and are hingedly connected to a cylinder 1 (232); the piston rod of the cylinder 1 (232) is hingedly connected to an L-shaped swing rod (233); Two opposing support seats (24) are provided on one side wall of the transverse plate (331); the two ends of the steering roller (332) are rotatably connected to the support seats (24); the two support seats (24) are rotatably connected to a rotating shaft (241) on opposite side surfaces; the swing rods (233) on the two cylinders (232) are rotatably connected to the two rotating shafts (241) at the ends away from the cylinders (232); the two rotating shafts (241) are fixedly provided with an L-shaped transition rod (242); the transition rod The vertical portion (242) is fixedly connected to the rotating shaft (241), and the horizontal portion is located above the support seat (24) and is provided with an extension rod (243) extending in the direction of the horizontal plate (331). The two extension rods (243) are connected by a pressure rod (244). The lower end of the pressure rod (244) is provided with an elastic pressure block (245) distributed along the length direction of the pressure rod (244). When the piston rod of the cylinder (232) is pushed out, the elastic pressure block (245) presses the protective film (11) against the upper end surface of the horizontal plate (331); The horizontal plate (32) is provided with a plurality of columns (25) on the side of the film cutting blade (222) away from the elastic pressure block (245), and a suction plate (251) is provided at the upper end of each of the columns (25). The length direction of the suction plate (251) extends along the horizontal pulling direction of the protective film (11). The upper end surface of the suction plate (251) is provided with a plurality of suction holes (252) for placing the protective film (11). A ventilation cavity (253) connected to each of the suction holes (252) is provided in the suction plate (251), and the ventilation cavity (253) is connected to a vacuum pump or a fan via a hose provided on the suction plate (251).

6. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 3, characterized in that: The upper end surface of the horizontal plate (32) is provided with a second barless cylinder (26) extending in the horizontal direction of the protective film (11), and the support arm (34) is arranged on a slide seat of the second barless cylinder (26); The fixing member comprises a mounting block (27) arranged at a height position of the support arm (34) higher than the horizontal part of the protective film (11); a pull plate (271) distributed in the vertical direction is arranged on the mounting block (27); a lower support plate (272) extending in the horizontal direction is arranged at the lower end of the pull plate (271); the lower support plate (272) is distributed along the length direction of the pull plate (271); the length direction of the pull plate (271) is distributed along the width direction of the protective film (11); and an upper support plate (271) is slidably connected to the pull plate (271) in the vertical direction. A support plate (273), wherein the upper support plate (273) is provided with a second elastic pressure block (274) on a side facing the lower support plate (272), and the second elastic pressure block (274) is distributed along the length direction of the upper support plate (273), and the upper support plate (273) and the lower support plate (272) are both distributed toward the transverse plate (331), and the mounting block (27) is provided with a driving member for driving the upper support plate (273) and the lower support plate (272) to clamp one end of the protective film (11), and the driving member also drives the pulling plate (271) to move up and down in the vertical direction.

7. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 6, characterized in that: The driving member comprises a left side plate (28) arranged on the mounting block (27); the left side plate (28) and the pulling plate (271) are arranged relative to each other; a left sliding cylinder (281) is arranged on the left side plate (28); a right sliding cylinder (282) is arranged on the pulling plate (271); the sliding tables of the left sliding cylinder (281) and the right sliding cylinder (282) are connected via a push plate (283); the push plate (283) is arranged horizontally and fixedly connected to the upper end of the upper abutment plate (273); and the pulling plate (271) is fixedly connected to the cylinder body of the right sliding cylinder (282).

8. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 7, characterized in that: The pull plate (271) is provided with a brush (29) at the lower end of a side surface facing away from the horizontal plate (331).

9. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 4, characterized in that: A guide rail (291) distributed laterally is provided between the two vertical plates (33); a movable plate (292) slidably connected to the guide rail (291) is provided at the upper end of the mounting plate (22); the knife mounting plate (221) is slidably connected to the movable plate (292) in a horizontal direction; a baffle (293) is provided on one side of the knife mounting plate (221); two compression springs (294) are provided on the baffle (293); one end of the compression spring (294) away from the baffle (293) is fixedly connected to a side surface of the knife mounting plate (221); a guide rod (295) is provided on the baffle (293) and penetrates into the compression spring (294); and a slide groove (296) is provided on the knife mounting plate (221) for one end of the guide rod (295) to penetrate into.

10. The automatic fixed-length cutting and unloading mechanism for rolled film according to claim 9, characterized in that: The knife mounting plate (221) is provided with a positioning plate (297) extending downward on a side facing away from the movable plate (292), and the mounting plate (22) is provided with a U-shaped detection plate (298) on a side facing away from the movable plate (292). The positioning plate (297) is located on one side of the detection plate (298). When the compression spring (294) is compressed, the positioning plate (297) moves into the detection plate (298). Infrared sensors are provided on two opposite sides of the detection plate (298); The transverse plate (331) is provided with a detection member for detecting whether the film cutting blade (222) is installed on the blade mounting plate (221).

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