Automatic cutting device for protective film processing

Abstract

The invention relates to the technical field of protective film cutting, in particular to an automatic cutting device for protective film machining, which comprises a bottom plate and a cutting laser head, a lower sliding plate is movably arranged above the bottom plate, a top block is arranged on the upper side of the lower sliding plate in a lifting manner, and a soaking mechanism is arranged in the top block; and an adsorption positioning mechanism is arranged on the upper side of the top block. Through the soaking mechanism and the follow-up jetting mechanism in the soaking mechanism, when the cutting laser head moves to cut the protective film, water can be continuously jetted to the edge cutting position after cutting, so that the water forms a water film at the edge cutting position, and the water film conducts a large amount of heat generated during cutting of the edge cutting position to the area nearby the protective film; and heat can be prevented from being concentrated at the edge cutting position, so that deformation or fragmentation of the edge cutting position caused by excessive concentration of heat at the edge cutting position can be prevented, the flatness of the edge cutting position of the protective film is further improved, and the cutting quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of protective film cutting, in particular to an automatic cutting device for protective film processing. Background Art

[0002] Protective films can be used on the screen surfaces of smartphones, smart watches and tablet computers to protect the screens from damage caused by impacts. Protective films are generally made of glass materials that have been processed through a special process, and then cut through a cutting device to form protective films that are suitable for screens of different sizes.

[0003] After searching, a Chinese patent with announcement number: CN113319450B discloses a protective film cutting process and laser cutting equipment, including a base, a protective cover, an X-axis guide roller and a Y-axis guide roller, the X-axis guide roller slides along the length direction of the Y-axis guide roller, the X-axis guide roller is provided with a laser cutting device that slides along its own length direction, the protective cover is hinged and covers the upper surface of the base, the X-axis guide roller is provided with a first driving mechanism for driving the laser cutting device to slide along the length direction of the X-axis guide roller, the base is provided with a second driving mechanism for driving the X-axis guide roller to slide along the length direction of the Y-axis guide roller, a smoking pipe is provided on the laser cutting device, a cover body with an opening facing the cutting position is provided on the air intake port of the smoking pipe, an exhaust fan and a smoke treatment device are provided on the smoking pipe, and the smoke treatment device is located between the cover body and the exhaust fan.

[0004] Based on the above search and combined with the problems encountered in actual applications, it is found that the existing laser cutting device for protective film cannot disperse the heat at the incision when in use. More heat is accumulated at the incision. Under the action of thermal expansion and contraction, it will cause a large deformation at this position. When the deformation exceeds the bearing range of the protective film material, it will cause the incision of the protective film to crack, affecting the cutting quality. In addition, the existing cutting device can only fix the protective film through an ordinary fixing device. Vibration will be generated at the moment when the protective film is cut and separated. The vibration cannot be suppressed, which can easily cause collision at the incision and cause breakage. Summary of the invention

[0005] The object of the present invention is to provide an automatic cutting device for processing a protective film to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: a protective film processing automatic cutting device, comprising a base plate and a cutting laser head, a lower slide plate is movably arranged above the base plate, a top block is lifted and lowered on the upper side of the lower slide plate, a heat equalization mechanism is arranged inside the top block, and an adsorption positioning mechanism is arranged on the upper side of the top block, a horizontal driving mechanism is arranged on the upper side of the base plate to drive the cutting laser head and the lower slide plate to move in a horizontal plane, and a protective film fixing mechanism is arranged on the upper side of the base plate; the heat equalization mechanism comprises a reflux chamber opened inside the top block and two water spray chambers located on both sides of the reflux chamber, a plurality of spray holes are evenly spaced on the upper sides of the two water spray chambers, a follow-up injection mechanism is arranged between the plurality of water spray chambers located on the same side, the follow-up injection mechanism makes the spray holes aligned with the cutting laser head communicate with the water spray chamber, a circulating liquid pump is arranged on the outer side of the top block, and the liquid inlet end and the liquid outlet end of the circulating liquid pump are respectively connected to the reflux chamber and the two water spray chambers.

[0007] Preferably, the follow-up injection mechanism includes a cavity opened inside the top block and located below the water spray chamber, a plurality of through grooves opened inside the top block at the position corresponding to each spray hole, a plurality of first guide rods slidably connected to the lower side of the water spray chamber at the position corresponding to each spray hole, and a strong magnet arranged on one side of the cutting laser head and aligned with the plurality of through grooves, each of the first guide rods extends to the inside of the cavity, and a blocking ball for blocking the spray hole is fixed to the upper end of each first guide rod, a first sliding pin is rotatably connected to the lower end of each first guide rod, and the inner portion of each of the through grooves The two ends of the reversing rod are provided with two slidable connections, and the two ends of the reversing rod are provided with a second guide rod extending to the inner side of the cavity. The lower end of each second guide rod is rotatably connected to the second sliding pin, and a convex ring is fixed to the outer lower end of each second guide rod, and the upper side of each convex ring is elastically connected to the inner top end of the cavity through a return spring. A support rod is fixed to the inner side of the cavity, and a reversing rod is rotatably connected to the position of each first sliding pin on the outer side of the support rod. Two sliding pin grooves are provided at both ends of the reversing rod, and each of the first sliding pin and each second sliding pin are movably connected to the inner side of the sliding pin groove at the corresponding position.

[0008] Preferably, the distance between the support rod and the first sliding pin is smaller than the distance between the support rod and the second sliding pin.

[0009] Preferably, a V-shaped groove is provided on the upper side of the top block at a position above the reflux cavity, and a plurality of reflux holes communicating with the reflux cavity are provided at the bottom end of the V-shaped groove.

[0010] Preferably, the adsorption positioning mechanism includes two isolation plates arranged on the upper side of the top block at both side edges, a negative pressure chamber is opened inside the two isolation plates, and a plurality of air holes connected to the negative pressure chamber are evenly opened on the upper side of the two isolation plates, a sealing ring is arranged on the upper side of the two isolation plates at the edge position, and an air pump is arranged on the outer side of the two isolation plates, the air inlet end of the air pump is connected to the negative pressure chamber, and the air outlet end of the air pump is connected to the outside.

[0011] Preferably, the horizontal driving mechanism includes two side plates fixed at both ends of the upper side of the base plate, a first screw and a second screw are rotatably connected through the two side plates, and a first motor that drives the first screw to rotate is installed on one side of one of the side plates, the second screw is rotatably connected to the inside of the lower slide plate through a thread, and a constant speed transmission mechanism is arranged between the second screw and the first screw, the outer side of the first screw is rotatably connected to an upper slide plate that moves horizontally and linearly through a thread, a guide rail is fixed to the lower side of the upper slide plate, a slider for fixing a cutting laser head is slidably connected to the inner side of the guide rail, and a third screw threadedly connected to the slider is rotatably connected to the inner side of the guide rail, and a second motor for driving the third screw to rotate is installed at one end of the outer side of the guide rail.

[0012] Preferably, the constant speed transmission mechanism comprises two synchronous pulleys respectively fixed to the ends of the first screw rod and the second screw rod, and the outer sides of the two synchronous pulleys are connected by synchronous belt transmission.

[0013] Preferably, the protective film fixing mechanism includes a plurality of supporting door frames fixed on the upper side of the base plate, a fixed stop block is fixed to one end of the upper side of each of the supporting door frames, and a guide groove is opened at the other end of the upper side of each of the supporting door frames, a stop block guide rod is slidably connected through the inner side of each of the supporting door frames, a movable stop block movably connected to the inner side of the guide groove is fixed to the outer end of each of the stop block guide rods, one side of each of the movable stops is elastically connected to the inner end of the supporting door frame through a clamping spring, and a pull rod is fixed to one end of the plurality of stop block guide rods.

[0014] Preferably, a plurality of lifting electric cylinders are installed on the upper side of the lower slide plate, the telescopic end of each lifting electric cylinder is fixedly connected to the lower side of the top block, and a plurality of micro switches are installed on the sides of the two isolation plates, and each of the micro switches is electrically connected to the plurality of lifting electric cylinders through a control circuit.

[0015] Preferably, the top block is made of non-magnetic material, and each of the second guide rods is made of magnetic material.

[0016] The present invention provides an automatic cutting device for protective film processing by improvement, which has the following improvements and advantages compared with the prior art:

[0017] First, the present invention uses an adsorption and positioning mechanism to adsorb and fix the lower surface of the protective film. The two isolation plates are of equal height and are respectively located on both sides of the cutting seam of the protective film. When the protective film is cut, it gradually forms two pieces. The two isolation plates in the adsorption and positioning mechanism can fix the protective film on both sides of the cutting seam to prevent the two pieces of protective film from warping at the moment of breaking and separation, thereby causing deformation at the cutting edge. In addition, the buffering and shock-absorbing effect of the sealing ring can prevent strong vibration at the moment of separation of the protective film, thereby preventing the vibration from causing breakage at the cutting edge of the protective film, thereby ensuring the flatness of the cutting edge and improving the cutting quality of the protective film.

[0018] Secondly, the present invention uses a heat equalizing mechanism and a follow-up injection mechanism therein, so that when the cutting laser head moves to cut the protective film, water can be continuously injected to the cutting edge position just after cutting, so that the water forms a water film at the cutting edge. The water film conducts a large amount of heat generated during cutting at the cutting edge to the area near the protective film, thereby preventing heat from being concentrated at the cutting edge, thereby preventing the cutting edge from being deformed or broken due to excessive heat concentration, further improving the flatness of the cutting edge of the protective film and improving the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the protective film cutting state of the present invention;

[0022] Figure 3 It is a schematic diagram of the disassembled structure of the upper slide plate and the guide rail in the present invention;

[0023] Figure 4 It is a schematic diagram of the overall structure of the top block in the present invention;

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the top block in the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 7 It is a structural schematic diagram of the conduction state between the spray hole and the water spray chamber in the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the protective film fixing mechanism in the present invention.

[0028] Reference numerals:

[0029] 1. Bottom plate; 2. Cutting laser head; 3. Lower slide plate; 4. Top block; 5. Lifting electric cylinder; 6. Micro switch; 101. Water spray chamber; 102. Reflux chamber; 103. Spray hole; 104. Cavity; 105. Circulating liquid pump; 106. Support rod; 107. Reversing rod; 108. Through groove; 109. First guide rod; 110. Blocking ball; 111. First sliding pin; 112. Second sliding pin; 113. Sliding pin groove; 114. Convex ring; 115. Return spring; 116. Second guide rod; 117. V-shaped groove; 118. Reflux hole; 11 9. Strong magnet; 201. Isolation plate; 202. Negative pressure chamber; 203. Air hole; 204. Sealing ring; 205. Air pump; 301. Side plate; 302. First motor; 303. First screw; 304. Second screw; 305. Upper slide plate; 306. Synchronous pulley; 307. Guide rail; 308. Second motor; 309. Third screw; 310. Slider; 401. Supporting door frame; 402. Fixed block; 403. Guide groove; 404. Movable block; 405. Block guide rod; 406. Clamping spring; 407. Pull rod. DETAILED DESCRIPTION

[0030] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0031] The present invention provides an automatic cutting device for protective film processing through improvement. The technical solution of the present invention is:

[0032] like Figures 1 to 8As shown, the embodiment of the present invention provides an automatic cutting device for processing a protective film, comprising a bottom plate 1 and a cutting laser head 2, a lower slide plate 3 is movably arranged above the bottom plate 1, a top block 4 is lifted and lowered on the upper side of the lower slide plate 3, a heat equalization mechanism is arranged inside the top block 4, and an adsorption positioning mechanism is arranged on the upper side of the top block 4, a horizontal driving mechanism is arranged on the upper side of the bottom plate 1 to drive the cutting laser head 2 and the lower slide plate 3 to move on a horizontal plane, and a protective film fixing mechanism is arranged on the upper side of the bottom plate 1; the heat equalization mechanism includes a heat equalization mechanism provided on the top block 4 The internal reflux chamber 102 and the two water spray chambers 101 located on both sides of the reflux chamber 102, the upper sides of the two water spray chambers 101 are provided with multiple spray holes 103 at equal intervals, and a follow-up injection mechanism is provided between the multiple water spray chambers 101 located on the same side. The follow-up injection mechanism connects the spray holes 103 aligned with the cutting laser head 2 with the water spray chamber 101, and a circulating liquid pump 105 is provided on the outside of the top block 4. The liquid inlet and liquid outlet ends of the circulating liquid pump 105 are respectively connected to the reflux chamber 102 and the two water spray chambers 101.

[0033] Furthermore, the follow-up spraying mechanism includes a cavity 104 (such as Figure 5 As shown in the figure, a plurality of through grooves 108 are provided inside the top block 4 at the position corresponding to each spray hole 103, a plurality of first guide rods 109 are slidably connected to the lower side of the water spray chamber 101 at the position corresponding to each spray hole 103, and a strong magnet 119 is arranged on one side of the cutting laser head 2 and aligned with the plurality of through grooves 108, each first guide rod 109 extends to the inside of the cavity 104, and a blocking ball 110 for blocking the spray hole 103 is fixed to the upper end of each first guide rod 109, a first sliding pin 111 is rotatably connected to the lower end of each first guide rod 109, and a second guide rod 116 extending to the inside of the cavity 104 is slidably connected to the inner side of each through groove 108, and each second guide rod 116 The lower ends of the second guide rods 116 are rotatably connected with the second sliding pin 112, and the lower ends of the outer sides of each second guide rod 116 are fixed with a convex ring 114, and the upper sides of each convex ring 114 are elastically connected to the inner top end of the cavity 104 through a return spring 115. A support rod 106 is fixed to the inner side of the cavity 104, and the outer side of the support rod 106 is rotatably connected with a reversing rod 107 at the position corresponding to each first sliding pin 111. Two sliding pin grooves 113 are provided at both ends of the reversing rod 107, and each first sliding pin 111 and each second sliding pin 112 are movably connected to the inner side of the sliding pin groove 113 at the corresponding position, and the distance between the support rod 106 and the first sliding pin 111 is smaller than the distance between the support rod 106 and the second sliding pin 112;

[0034] Through the follow-up injection mechanism, when the cutting laser head 2 moves to cut the protective film, water can be continuously sprayed to the cutting edge position just after cutting, so that water forms a water film at the cutting edge. The water film conducts a large amount of heat generated during cutting at the cutting edge to the area near the protective film, which can prevent heat from being concentrated at the cutting edge, thereby preventing the cutting edge from being deformed or broken due to excessive heat concentration, further improving the flatness of the cutting edge of the protective film and improving the cutting quality.

[0035] Furthermore, a V-shaped groove 117 is provided on the upper side of the top block 4 at a position above the reflux cavity 102, and a plurality of reflux holes 118 communicating with the reflux cavity 102 are provided at the bottom end of the V-shaped groove 117;

[0036] The V-shaped groove 117 can collect water dripping from the lower surface of the protective film at the bottom, and flow it back to the inside of the reflux chamber 102 through multiple reflux holes 118, so that the water can circulate continuously, thereby continuously dissipating the heat generated by the protective film during cutting.

[0037] Furthermore, the adsorption positioning mechanism includes two isolation plates 201 arranged on the upper side of the top block 4 at the two side edge positions, the two isolation plates 201 are each provided with a negative pressure chamber 202 inside, and the upper sides of the two isolation plates 201 are evenly provided with a plurality of air holes 203 connected with the negative pressure chamber 202, the upper sides of the two isolation plates 201 are each provided with a sealing ring 204 at the edge position, and the outer sides of the two isolation plates 201 are provided with an air pump 205, the air inlet end of the air pump 205 is connected with the negative pressure chamber 202, and the air outlet end of the air pump 205 is connected with the outside;

[0038] The lower surface of the protective film is adsorbed and fixed by the adsorption positioning mechanism. The heights of the two isolation plates 201 are equal, and the two isolation plates 201 are respectively located on both sides of the cutting seam of the protective film. When the protective film is cut, it gradually forms two pieces. The two isolation plates 201 in the adsorption positioning mechanism can fix the protective film on both sides of the cutting seam to prevent the two protective films from warping at the moment of breaking and separating, thereby causing deformation at the cutting edge.

[0039] Furthermore, the horizontal driving mechanism includes two side plates 301 fixed at both ends of the upper side of the bottom plate 1, a first screw 303 and a second screw 304 are rotatably connected between the two side plates 301, and a first motor 302 is installed on one side of one of the side plates 301 to drive the first screw 303 to rotate, the second screw 304 is rotatably connected to the inside of the lower slide plate 3 through a thread, and a constant speed transmission mechanism is provided between the second screw 304 and the first screw 303, and the outer side of the first screw 303 is rotatably connected to the upper slide plate 3 that moves horizontally and linearly through a thread. 05, a guide rail 307 is fixed on the lower side of the upper slide plate 305, a slider 310 for fixing the cutting laser head 2 is slidably connected to the inner side of the guide rail 307, and a third screw rod 309 threadedly connected to the slider 310 is rotatably connected to the inner side of the guide rail 307, a second motor 308 for driving the third screw rod 309 to rotate is installed at one end of the outer side of the guide rail 307, and the constant speed transmission mechanism includes two synchronous pulleys 306 respectively fixed to the ends of the first screw rod 303 and the second screw rod 304, and the outer sides of the two synchronous pulleys 306 are connected by synchronous belt transmission;

[0040] The horizontal driving mechanism can drive the cutting laser head 2 and the top block 4 to move in the same direction at the same speed, so that the cutting laser head 2 and the top block 4 always maintain vertical alignment. Therefore, when the cutting laser head 2 cuts the protective film, the top block 4 can always support and fix the lower surface of the protective film to prevent the protective film from deformation or rupture.

[0041] Further, the protective film fixing mechanism includes a plurality of support door frames 401 fixed on the upper side of the bottom plate 1, a fixed stopper 402 is fixed to one end of the upper side of each support door frame 401, and a guide groove 403 is provided at the other end of the upper side of each support door frame 401, a stopper guide rod 405 is slidably connected to the inner side of each support door frame 401, a movable stopper 404 movably connected to the inner side of the guide groove 403 is fixed to one end of the outer side of each stopper guide rod 405, one side of each movable stopper 404 is elastically connected to one end of the inner side of the support door frame 401 through a clamping spring 406, and a pull rod 407 is fixed to one end of the plurality of stopper guide rods 405;

[0042] The protective film to be cut is supported and fixed by the protective film fixing mechanism, which facilitates the cutting of the protective film and prevents the protective film from being offset by the cutting, thereby helping to improve the cutting accuracy of the protective film.

[0043] Furthermore, a plurality of lifting electric cylinders 5 are installed on the upper side of the lower slide plate 3, and the telescopic end of each lifting electric cylinder 5 is fixedly connected to the lower side of the top block 4. A plurality of micro switches 6 are installed on the sides of the two isolation plates 201, and each micro switch 6 is electrically connected to the plurality of lifting electric cylinders 5 through a control circuit.

[0044] The lifting electric cylinder 5 is used to drive the lower slide plate 3 to move up and down, thereby driving the top block 4 to move up and down, so that the two isolation plates 201 on the upper side of the top block 4 can provide support and buffering for the areas on both sides of the cutting seam of the protective film.

[0045] Further, the top block 4 is made of non-magnetic material, and each second guide rod 116 is made of magnetic material;

[0046] Non-magnetic materials will not be attracted by the strong magnet 119. The strong magnet 119 only generates magnetic attraction to the second guide rod 116 made of magnetic material, so that the spray hole 103 at a specific position can be flexibly connected to achieve the dispersion of heat from the cutting edge of the protective film by the spray water flow.

[0047] Working principle: when in use, first pull the pull rod 407 of the protective film fixing mechanism, and the pull rod 407 drives the multiple block guide rods 405 to move synchronously to one side, and each block guide rod 405 drives each movable block 404 to move respectively, and each movable block 404 moves inside the guide groove 403 at the corresponding position respectively, and compresses the clamping spring 406, and then the whole piece of protective film is placed on the upper side of the multiple support door frames 401 of the protective film fixing mechanism, and then release the pull rod 407, and under the elastic force of the multiple clamping springs 406, the multiple movable blocks 404 and the multiple block guide rods 405 are pushed to move in the opposite direction and reset, and the multiple movable blocks 404 can press one side of the protective film tightly, and the other side of the protective film presses against one side of each fixed block 402, so that the protective film is fixed to the upper side of the multiple support door frames 401, which is convenient for cutting the protective film and prevents the protective film from being offset by cutting, thereby helping to improve the cutting accuracy of the protective film;

[0048] Then, according to the cutting size requirements of the protective film, the cutting laser head 2 and the top block 4 are adjusted to move to the specified position through the horizontal driving mechanism, and the first motor 302 of the horizontal driving mechanism drives the first screw 303 to rotate, and the first screw 303 drives the synchronous pulley 306 at its end to rotate, and the synchronous pulley 306 drives another synchronous pulley 306 to rotate synchronously through the synchronous belt, thereby driving the second screw 304 to rotate at the same speed and in the same direction as the first screw 303, and the upper slide 305 and the lower slide 3 can be moved horizontally and linearly through the horizontally arranged guide rods, so when the first screw 303 and the second screw 304 rotate, they respectively drive the upper slide 305 and the lower slide 304 to rotate. The plate 3 moves horizontally and linearly at an equal speed, and the lower slide plate 3 drives the upper top block 4 to move synchronously, so that the top block 4 always moves synchronously with the upper slide plate 305. The upper slide plate 305 can drive the cutting laser head 2 to move horizontally, so the top block 4 always moves synchronously and is aligned with the cutting laser head 2. When the cutting laser head 2 and the top block 4 are adjusted to the specified position, the second motor 308 drives the third screw 309 to rotate, and the third screw 309 drives the slider 310 to move on the inner side of the guide rail 307 through the thread. The slider 310 drives the cutting laser head 2 to move. When the cutting laser head 2 moves, a laser beam is emitted to the upper surface of the protective film to automatically cut the protective film.

[0049] Before cutting, the telescopic ends of multiple lifting cylinders 5 can be controlled to extend at the same time, driving the top block 4 to move up, so that the upper side of the top block 4 is close to the lower surface of the protective film, and the contacts of the multiple micro switches 6 are slightly higher than the upper surface of the sealing ring 204. Therefore, when the contacts of the multiple micro switches 6 contact the lower surface of the protective film, a signal is sent to the multiple lifting cylinders 5 through the control circuit, and the telescopic ends of the multiple lifting cylinders 5 immediately stop extending. At this time, the upper surface of the sealing ring 204 can just contact the lower surface of the protective film, and the air pump 205 of the adsorption positioning mechanism starts to run at the same time when the telescopic end of each lifting cylinder 5 extends. The air pump 205 can quickly draw out the air inside the two negative pressure chambers 202 to form a negative pressure inside the negative pressure chamber 202. Therefore, under the action of the external atmospheric pressure, the protective film can be adsorbed on the upper side of the sealing ring 204. Since the sealing ring 204 is soft in texture, it has good sealing properties, which prevents external air from flowing into the negative pressure chamber through the gap between the protective film and the isolation plate 201. The inner side of the cavity 202 ensures the negative pressure inside the negative pressure cavity 202, improves the stability of the adsorption force applied to the protective film, and effectively prevents the protective film and the sealing ring 204 from falling off. At the same time, the softer sealing ring 204 can avoid scratching the lower surface of the protective film. The two isolation plates 201 respectively adsorb and fix the protective film through the upper sealing ring 204. The heights of the two isolation plates 201 are equal, and the two isolation plates 201 are respectively located on both sides of the cutting seam of the protective film. When the cutting laser head 2 cuts the protective film, the protective film gradually forms two protective films. The two isolation plates 201 can fix the protective films on both sides of the cutting seam to prevent the two protective films from breaking and separating at the moment of warping, thereby causing deformation at the cutting edge. In addition, the buffering and shock-absorbing effect of the sealing ring 204 can prevent strong vibration at the moment of separation of the protective film, thereby preventing the vibration from causing the cutting edge of the protective film to break, thereby ensuring the flatness of the cutting edge, thereby improving the cutting quality of the protective film.

[0050] When the cutting laser head 2 moves and cuts the protective film, it will pass over the multiple second guide rods 116 of the follow-up injection mechanism in turn. When the cutting laser head 2 moves over a second guide rod 116 each time, the strong magnet 119 on one side of it can generate a magnetic attraction force on the second guide rod 116 below. Under the action of the magnetic attraction force, the second guide rod 116 can be driven to move upward along the inner side of the through groove 108. The second guide rod 116 drives the convex ring 114 to move upward. The upward movement of the convex ring 114 compresses the return spring 115. At the same time, the second guide rod 116 drives the second sliding pin 112 to move upward synchronously. Through the active cooperation between the second sliding pin 112 and the sliding pin groove 113 at the corresponding position, the reversing rod 107 can be driven to rotate counterclockwise (such as Figure 6As shown in the figure, through the active cooperation between the first sliding pin 111 and the sliding pin groove 113, the reversing rod 107 can pull the first guide rod 109 to move to the inside of the cavity 104 through the first sliding pin 111, and the first guide rod 109 drives the blocking ball 110 to move downward, thereby releasing the blocking of the spray hole 103, so that the spray hole 103 can be connected with the inside of the water spray chamber 101. At the same time, the circulating liquid pump 105 in the heat equalization mechanism is always in operation. The operation of the circulating liquid pump 105 can cyclically draw the water inside the reflux chamber 102 into the inside of the two water spray chambers 101. The water forms a certain pressure inside the two water spray chambers 101. When any one of the spray holes 103 is connected with the water spray chamber 101, the water inside the water spray chamber 101 can be sprayed upward through the spray hole 103 under the action of pressure. After the water is sprayed out, it can just impact the lower surface of the protective film. Since the position of the spray hole 103 is close to the cut edge of the protective film, the water flow forms a water film on the lower surface of the protective film near the cut edge. The water film can conduct a large amount of heat generated during cutting at the cut edge to the area near the protective film, which can prevent the heat from being concentrated at the cut edge, thereby preventing the cut edge from being deformed or broken due to excessive heat concentration at the cut edge, further improving the flatness of the cut edge of the protective film, and improving the cutting quality. As the cutting laser head 2 continues to move, when it drives the strong magnet 119 away from the second guide rod 116, the second guide rod 116 loses its magnetic attraction, and under the action of the return spring 115, it drives the second guide rod 116 to move down and reset, thereby blocking the spray hole 103 at the corresponding position again through the blocking ball 110.

[0051] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A protective film processing automatic cutting device, comprising a base plate (1) and a cutting laser head (2), characterized in that: A lower slide plate (3) is movably arranged above the bottom plate (1), a top block (4) is lifted and lowered on the upper side of the lower slide plate (3), a heat equalization mechanism is arranged inside the top block (4), and an adsorption positioning mechanism is arranged on the upper side of the top block (4), a horizontal driving mechanism for driving the cutting laser head (2) and the lower slide plate (3) to move on a horizontal plane is arranged on the upper side of the bottom plate (1), and a protective film fixing mechanism is arranged on the upper side of the bottom plate (1); The heat equalization mechanism comprises a reflux chamber (102) provided inside the top block (4) and two water spray chambers (101) located on both sides of the reflux chamber (102); a plurality of spray holes (103) are provided at equal intervals on the upper sides of the two water spray chambers (101); a follow-up injection mechanism is provided between the plurality of water spray chambers (101) located on the same side; the follow-up injection mechanism enables the spray holes (103) aligned with the cutting laser head (2) to communicate with the water spray chamber (101); a circulating liquid pump (105) is provided on the outer side of the top block (4); a liquid inlet end and a liquid outlet end of the circulating liquid pump (105) are respectively communicated with the reflux chamber (102) and the two water spray chambers (101).

2. The automatic cutting device for protective film processing according to claim 1, characterized in that: The follow-up injection mechanism comprises a cavity (104) opened inside the top block (4) and located below the water spray cavity (101), a plurality of through grooves (108) opened inside the top block (4) at positions corresponding to each spray hole (103), a plurality of first guide rods (109) slidably connected to the lower side of the water spray cavity (101) at positions corresponding to each spray hole (103), and a strong magnet (119) arranged on one side of the cutting laser head (2) and aligned with the plurality of through grooves (108), each of the first guide rods (109) extending to the inside of the cavity (104), and a blocking ball (110) for blocking the spray hole (103) is fixed to the upper end of each first guide rod (109), a first sliding pin (111) is rotatably connected to the lower end of each first guide rod (109), and the inner side of each through groove (108) is slidably connected to the first guide rod (111). A second guide rod (116) is rotatably connected to the inner side of the cavity (104); the lower end of each second guide rod (116) is rotatably connected to a second sliding pin (112); a convex ring (114) is fixed to the outer lower end of each second guide rod (116); the upper side of each convex ring (114) is elastically connected to the inner top end of the cavity (104) through a return spring (115); a support rod (106) is fixed to the inner side of the cavity (104); a reversing rod (107) is rotatably connected to the outer side of the support rod (106) at a position corresponding to each first sliding pin (111); two sliding pin grooves (113) are provided at both ends of the reversing rod (107); each first sliding pin (111) and each second sliding pin (112) are movably connected to the inner side of the sliding pin groove (113) at the corresponding position.

3. The automatic cutting device for protective film processing according to claim 2 is characterized in that: The distance between the support rod (106) and the first sliding pin (111) is smaller than the distance between the support rod (106) and the second sliding pin (112).

4. The automatic cutting device for protective film processing according to claim 1, characterized in that: A V-shaped groove (117) is provided on the upper side of the top block (4) at a position above the reflux chamber (102), and a plurality of reflux holes (118) communicating with the reflux chamber (102) are provided at the bottom end of the V-shaped groove (117).

5. The automatic cutting device for protective film processing according to claim 1, characterized in that: The adsorption positioning mechanism comprises two isolation plates (201) arranged on the upper side of the top block (4) at the two side edge positions, the two isolation plates (201) are each provided with a negative pressure chamber (202) inside, and the upper sides of the two isolation plates (201) are each evenly provided with a plurality of air holes (203) connected to the negative pressure chamber (202), the upper sides of the two isolation plates (201) are each provided with a sealing ring (204) at the edge position, and the outer sides of the two isolation plates (201) are provided with an air pump (205), the air inlet end of the air pump (205) is connected to the negative pressure chamber (202), and the air outlet end of the air pump (205) is connected to the outside.

6. The automatic cutting device for protective film processing according to claim 1, characterized in that: The horizontal driving mechanism comprises two side plates (301) fixed at both ends of the upper side of the bottom plate (1), a first screw rod (303) and a second screw rod (304) are rotatably connected through the two side plates (301), and a first motor (302) for driving the first screw rod (303) to rotate is installed on one side of one of the side plates (301), the second screw rod (304) is rotatably connected to the inside of the lower slide plate (3) through a thread, and a constant speed transmission mechanism is provided between the second screw rod (304) and the first screw rod (303), and the The outer side of the first screw rod (303) is rotatably connected to an upper slide plate (305) that moves horizontally and linearly through a thread, and a guide rail (307) is fixed to the lower side of the upper slide plate (305). The inner side of the guide rail (307) is slidably connected to a slider (310) for fixing a cutting laser head (2), and the inner side of the guide rail (307) is rotatably connected to a third screw rod (309) that is threadedly connected to the slider (310), and a second motor (308) for driving the third screw rod (309) to rotate is installed at one end of the outer side of the guide rail (307).

7. The automatic cutting device for protective film processing according to claim 6, characterized in that: The constant speed transmission mechanism comprises two synchronous pulleys (306) respectively fixed to the ends of the first screw rod (303) and the second screw rod (304), and the outer sides of the two synchronous pulleys (306) are connected by synchronous belt transmission.

8. The automatic cutting device for protective film processing according to claim 1, characterized in that: The protective film fixing mechanism comprises a plurality of support door frames (401) fixed on the upper side of the base plate (1), a fixed stopper (402) being fixed to one end of the upper side of each of the support door frames (401), and a guide groove (403) being provided at the other end of the upper side of each of the support door frames (401), a stopper guide rod (405) being slidably connected to the inner side of each of the support door frames (401), a movable stopper (404) being movably connected to the inner side of the guide groove (403) being fixed to one end of the outer side of each of the stopper guide rods (405), one side of each of the movable stoppers (404) being elastically connected to one end of the inner side of the support door frame (401) via a clamping spring (406), and a pull rod (407) being fixed to one end of each of the stopper guide rods (405).

9. The automatic cutting device for protective film processing according to claim 5, characterized in that: A plurality of lifting electric cylinders (5) are installed on the upper side of the lower slide plate (3), and the telescopic end of each lifting electric cylinder (5) is fixedly connected to the lower side of the top block (4). A plurality of micro switches (6) are installed on the side surfaces of the two isolation plates (201), and each of the micro switches (6) is electrically connected to the plurality of lifting electric cylinders (5) through a control circuit.

10. The automatic cutting device for protective film processing according to claim 2, characterized in that: The top block (4) is made of non-magnetic material, and each of the second guide rods (116) is made of magnetic material.

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