A slitting machine for producing mobile phone protective film

Abstract

The present invention relates to the technical field of cutting equipment, and in particular to a slitting machine for producing mobile phone protective films, which comprises a bracket, a retractable component, a positioning roller, a cutting roller, a detection component and an adjustment control unit. When the cutting knife is in the first state of the coaxial cutting roller, the cutting knife normally cuts and strips the mobile phone protective film. If the flatness of the mobile phone protective film in the cutting area of ​​any cutting knife is less than a first preset value, the adjustment control unit can switch the cutting knife at the corresponding position from the first state to the second state. When the cutting roller rotates, the movement trajectory of the cutting knife is elliptical, and the cutting knife forms a jumping cutting on the mobile phone protective film, ensuring that the mobile phone protective film can still be completely cut when wrinkles appear on the mobile phone protective film, thereby avoiding the situation where the mobile phone protective film is accumulated at the cutting knife, thereby improving the efficiency of stripping the mobile phone protective film and reducing the scrap rate of the mobile phone protective film.

Description

Technical Field

[0001] The invention relates to the technical field of cutting equipment, and in particular to a slitting machine for producing mobile phone protective films. Background Art

[0002] With the widespread use of smartphones, the demand for mobile phone protective films as key accessories is also growing. In the production process of protective films, striping is a crucial step. The traditional striping process usually uses a cutter for cutting operations. However, during the production process, when the protective film enters the striping equipment, some areas often wrinkle due to insufficient tension or equipment vibration. When the cutter cuts the protective film, if the protective film is not tight and flat enough, it is very easy to be cut incompletely. Once the protective film cannot be completely cut, the film material will accumulate at the striping point, hindering the production process. This accumulation problem not only significantly reduces production efficiency, but also increases the scrap rate of the protective film, resulting in waste of resources and increased production costs. In addition, since the material of the mobile phone protective film is very thin, the precision requirements of the equipment during cutting are very strict. If the cutting is uneven, the quality of the protective film after striping may not meet the standard, which will affect its performance in subsequent use. Summary of the invention

[0003] The invention provides a slitting machine for producing a mobile phone protective film, so as to solve the problem that the existing mobile phone protective film slitting machine easily causes the quality of the mobile phone protective film to deteriorate.

[0004] The present invention discloses a slitting machine for producing a mobile phone protective film, which adopts the following technical scheme:

[0005] A slitting machine for producing mobile phone protective films comprises a bracket, a retractable component, a positioning roller, a cutting roller, a detection component and an adjustment control component.

[0006] The retractable part can unwind the mobile phone protective film that has not been cut into strips, and can also rewind the mobile phone protective film that has been cut into strips; the positioning roller is rotatably arranged on the bracket, and a plurality of cutting rings are arranged on the positioning roller; the cutting roller is rotatably arranged on the bracket, and the cutting roller is arranged above the positioning roller, and the mobile phone protective film that has not been cut into strips can enter between the cutting roller and the positioning roller; a plurality of cutting knives are arranged on the cutting roller, each cutting knife is arranged corresponding to a cutting ring, each cutting knife has a first state coaxial with the cutting roller, and each cutting knife also has a second state eccentric to the cutting roller; the cutting roller and the positioning roller have the same rotation speed and opposite rotation direction; the detection part is used to detect the flatness of the mobile phone protective film at the cutting area of ​​each cutting knife; the adjustment control is used to switch any one or more cutting knives between the first state and the second state; when the flatness of the mobile phone protective film at the cutting area of ​​any cutting knife is greater than or equal to the first preset value, the cutting knife at the corresponding position is in the first state; when the flatness of the mobile phone protective film at the cutting area of ​​any cutting knife is less than the first preset value, the cutting knife at the corresponding position switches from the first state to the second state;

[0007] The cutting roller comprises a plurality of first sections and a plurality of second sections, the plurality of first sections and the plurality of second sections are alternately arranged, the first section is fixedly connected to the second section, the plurality of first sections are coaxially arranged, and the plurality of second sections are coaxially arranged; the cutting knife comprises a knife disc and a blade, the knife disc of each cutting knife is arranged on a second section, and the blade is coaxially fixedly arranged on the outer side wall of the knife disc; the knife disc can move in the radial direction of the second section; when the cutting knife is in the first state, the knife disc is coaxial with the first section, and when the cutting knife is in the second state, the knife disc is eccentric with the first section;

[0008] The adjustment control unit includes multiple extrusion rods, multiple limit blocks and multiple adjustment cylinders. The limit blocks can be telescopically arranged. Each limit block is arranged along the radial direction of a second section. One end of the limit block is connected to the second section, and the other end of the limit block is inserted into the inside of the cutter disc; each extrusion rod is coaxially slidably connected to a first section, and each extrusion rod is provided with an extrusion block. When the extrusion rod slides along the axial direction of the first section, the extrusion block can squeeze the cutter disc; each adjustment cylinder can be telescopically arranged, and the length change of each adjustment cylinder can drive the movement of an extrusion rod in the first section.

[0009] Furthermore, the detection component includes a detection rod and multiple laser displacement sensors. The detection rod is fixed on the bracket, and the multiple laser displacement sensors are arranged on the detection rod. Each laser displacement sensor can detect the flatness of the mobile phone protective film in a cutting area of ​​a cutting knife.

[0010] Furthermore, the control unit also includes a control board, which can receive detection data from any laser displacement sensor, and the control board can adjust the length of any control cylinder according to the received detection data from the laser displacement sensor.

[0011] Furthermore, a first drive motor and a second drive motor are arranged on the bracket, the first drive motor is used to drive the cutting roller to rotate, and the second drive motor is used to drive the positioning roller to rotate. When the length of any regulating cylinder changes, the control panel can regulate the rotation speed of the first drive motor and the second drive motor.

[0012] Furthermore, an adjusting rod is provided on each second section, and each adjusting rod can adjust the position of the limit block. When the limit block moves in the axial direction of the second section, the distance between two adjacent cutter discs can change.

[0013] Furthermore, a driving cylinder for driving the cutting roller to move in the up and down directions of the bracket is arranged on the bracket; the driving cylinder can adjust the distance between the cutting roller and the positioning roller.

[0014] Furthermore, the retracting and unwinding component includes an unwinding roller and a winding roller. The unwinding roller is rotatably arranged on a bracket, and a first driving source for driving the unwinding tube to rotate on the bracket is arranged on the bracket; the winding roller is rotatably arranged on the bracket, and a second driving source for driving the winding tube to rotate on the bracket is arranged on the bracket, and the winding roller is arranged parallel to the unwinding roller.

[0015] Furthermore, multiple auxiliary rollers are arranged on the bracket, and the multiple auxiliary rollers are rotatably connected to the bracket. The multiple auxiliary rollers are arranged in parallel, and there are differences in the horizontal height direction of the multiple auxiliary rollers. The multiple auxiliary rollers are arranged on both sides of the cutting roller, and the multiple auxiliary rollers are used to adjust the tension of the mobile phone protective film.

[0016] The beneficial effects of the present invention are as follows: a slitting machine for producing a mobile phone protective film of the present invention comprises a bracket, a retractable member, a positioning roller, a cutting roller, a detection member and an adjustment control unit. When the mobile phone protective film is cut and stripped, under the action of the retractable member, the uncut and stripped mobile phone protective film can continue to enter between the cutting roller and the positioning roller, and the mobile phone protective film after cutting and stripping can be rolled up again. When the uncut and stripped mobile phone protective film passes between the cutting roller and the positioning roller, the cutting knife on the cutting roller can cut and strip the uncut and stripped mobile phone protective film, and the detection member detects the flatness of the mobile phone protective film at the cutting area of ​​each cutting knife. When the flatness of the mobile phone protective film at any cutting area of ​​the cutting knife is greater than or equal to a first preset value, the uncut and stripped mobile phone protective film is relatively The cutting knife is in the first state of the coaxial cutting roller. At this time, the cutting knife normally cuts and strips the mobile phone protective film. If the flatness of the mobile phone protective film in the cutting area of ​​any cutting knife is less than the first preset value, the adjustment control can switch the cutting knife at the corresponding position from the first state to the second state. The cutting knife in the second state is no longer coaxial with the cutting roller. When the cutting roller rotates, the movement trajectory of the cutting knife is elliptical. At this time, the cutting knife forms a jumping cutting on the mobile phone protective film. When the mobile phone protective film is cut in a jumping manner, it is ensured that the mobile phone protective film can still be completely cut when wrinkles appear, thereby avoiding the accumulation of the mobile phone protective film at the cutting knife, thereby improving the efficiency of stripping the mobile phone protective film and reducing the scrap rate of the mobile phone protective film. 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 labor.

[0018] Figure 1 A schematic structural diagram of a slitting machine for producing a mobile phone protective film provided by an embodiment of the present invention;

[0019] Figure 2 A side view of a slitting machine for producing a mobile phone protective film provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Sectional view in the AA direction;

[0021] Figure 4 A schematic diagram of the structure of a cutting roller and a cutting knife in a slitting machine for producing a mobile phone protective film provided by an embodiment of the present invention;

[0022] Figure 5A front view of a cutting roller and a cutting knife in a slitting machine for producing a mobile phone protective film provided by an embodiment of the present invention;

[0023] Figure 6 for Figure 5 Cross-sectional view in the BB direction;

[0024] Figure 7 for Figure 5 Cross-sectional view in CC direction;

[0025] Figure 8 for Figure 7 A partial enlarged view of point D in the middle;

[0026] Fig. 9 An exploded view of the structure of a cutting roller and a cutting knife in a slitting machine for producing a mobile phone protective film provided in an embodiment of the present invention.

[0027] In the figure: 110, mobile phone protective film; 120, bracket; 130, positioning roller; 140, cutting ring; 150, cutting roller; 151, first section; 152, second section; 160, cutting knife; 161, knife disc; 162, blade; 163, through groove; 210, extrusion rod; 220, limit block; 230, regulating cylinder; 240, limit groove; 250, compression spring; 260, extrusion block; 270, laser displacement sensor; 310, adjustment rod; 320, drive cylinder; 330, winding roller; 340, unwinding roller; 350, auxiliary roller. DETAILED DESCRIPTION

[0028] 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.

[0029] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] like Figures 1 to 9 As shown, an embodiment of the present invention provides a slitting machine for producing a mobile phone protective film, which includes a bracket 120, a retractable component, a positioning roller 130, a cutting roller 150, a detection component and an adjustment control component.

[0032] The bracket 120 is fixedly disposed on the ground, and the bracket 120 is placed on the ground along the left-right direction.

[0033] The retractable component is arranged on the bracket 120. The retractable component can unwind the uncut and stripped mobile phone protective film 110, and can also rewind the cut and stripped mobile phone protective film 110. Specifically, the retractable component is arranged at the two end portions in the left and right directions of the bracket 120. When unwinding the uncut and stripped mobile phone protective film 110, the retractable component also rewinds the cut and stripped mobile phone protective film 110. The retracting and unwinding actions are completed at the same time, ensuring that the mobile phone protective film 110 remains in a tensioned state during the cutting and stripping process.

[0034] The positioning roller 130 is rotatably disposed on the bracket 120. Specifically, the positioning roller 130 is disposed in the middle of the bracket 120 in the left-right direction to ensure that the uncut and stripped mobile phone protective film 110 unwound by the retractable component can pass through the positioning roller 130. A plurality of cutting rings 140 are disposed on the positioning roller 130, and the plurality of cutting rings 140 are evenly distributed along the axial direction of the positioning roller 130. In the present embodiment, the positioning roller 130 is disposed along the front-to-back direction.

[0035] The cutting roller 150 is rotatably arranged on the bracket 120. The cutting roller 150 is arranged above the positioning roller 130. The length of the cutting roller 150 is equal to the length of the positioning roller 130. The extending direction of the cutting roller 150 is the same as the extending direction of the positioning roller 130. There is a gap between the cutting roller 150 and the positioning roller 130. The uncut mobile phone protective film 110 can enter between the cutting roller 150 and the positioning roller 130. A plurality of cutting knives 160 are arranged on the cutting roller 150. Each cutting knives 160 is arranged corresponding to a cutting ring 140. When the uncut mobile phone protective film 110 is cut and striped, each cutting knives 160 cooperates with a cutting ring 140 to complete the cutting action. Each cutting knives 160 has a first state coaxial with the cutting roller 150. When the cutting knives 160 are coaxial with the cutting roller 150, each cutting knives 160 and a cutting ring 140 can complete the cutting of the unwrinkled mobile phone protective film 110. Each cutting knife 160 also has a second state eccentric to the cutting roller 150. When the cutting knife 160 and the cutting roller 150 are not coaxial, the movement track of the cutting knife 160 is elliptical, and the state of the cutting knife 160 cutting the mobile phone protective film 110 is a jumping cutting. Each cutting knife 160 and a cutting ring 140 can complete the cutting of the wrinkled mobile phone protective film 110. The cutting roller 150 and the positioning roller 130 have the same rotation speed and opposite rotation direction, ensuring that the cutting knife 160 can cooperate with the cutting ring 140 to cut the mobile phone protective film 110 into strips.

[0036] The detection element is used to detect the flatness of the mobile phone protective film 110 in the cutting area of ​​each cutting knife 160. In this embodiment, the detection element is an optical contour sensor, which can obtain the flatness of both sides of the mobile phone protective film 110 in the cutting area of ​​the cutting knife 160 in real time.

[0037] The adjustment control is used to switch any one or more cutting knives 160 between the first state and the second state. Specifically, all of the multiple cutting knives 160 can be in the first state or the second state, or some of the cutting knives 160 can be in the first state and another part of the cutting knives 160 can be in the second state, so that the first state or the second state of two adjacent cutting knives 160 do not interfere with each other. When the flatness of the mobile phone protective film 110 in the cutting area of ​​any cutting knife 160 is greater than or equal to the first preset value, the cutting knife 160 at the corresponding position is in the first state; when the flatness of the mobile phone protective film 110 in the cutting area of ​​any cutting knife 160 is less than the first preset value, the cutting knife 160 at the corresponding position switches from the first state to the second state. Specifically, the flatness of the mobile phone protective film 110 of the first preset value is a parameter set artificially. When the flatness of the mobile phone protective film 110 in the cutting area of ​​the cutting knife 160 is greater than or equal to the first preset value, when the cutting knife 160 cooperates with the cutting ring 140 to cut the mobile phone protective film 110, the mobile phone protective film 110 will not accumulate in the cutting area of ​​the cutting knife 160. When the flatness of the mobile phone protective film 110 in the cutting area of ​​the cutting knife 160 is less than the first preset value, when the cutting knife 160 cooperates with the cutting ring 140 to cut the mobile phone protective film 110, the mobile phone protective film 110 may accumulate in the cutting area of ​​the cutting knife 160. At this time, by switching the cutting knife 160 at the corresponding position from the first state to the second state, the cutting state of the mobile phone protective film 110 by the cutting knife 160 is a jump cutting, thereby reducing the probability of the mobile phone protective film 110 accumulating in the cutting area of ​​the cutting knife 160.

[0038] The present invention discloses a slitting machine for producing a mobile phone protective film. When cutting and slitting a mobile phone protective film 110, under the action of a retractable component, the uncut and unslit mobile phone protective film 110 can continue to enter between a cutting roller 150 and a positioning roller 130, and the mobile phone protective film 110 after cutting and slitting can be rolled up again. When the uncut and unslit mobile phone protective film 110 passes between the cutting roller 150 and the positioning roller 130, a cutting knife 160 on the cutting roller 150 can cut and slitting the uncut and unslit mobile phone protective film 110, and a detection component detects the flatness of the mobile phone protective film 110 at a cutting area of ​​each cutting knife 160. When the flatness of the mobile phone protective film 110 at a cutting area of ​​any cutting knife 160 is greater than or equal to a first preset value, the uncut and unslit mobile phone protective film 110 is relatively flat, and the cutting knife 160 is in a first state of the coaxial cutting roller 150. At this time, the cutting knife 160 normally cuts and strips the mobile phone protective film 110. If the flatness of the mobile phone protective film 110 at the cutting area of ​​any cutting knife 160 is less than the first preset value, the adjustment control can switch the cutting knife 160 at the corresponding position from the first state to the second state. The cutting knife 160 in the second state is no longer coaxial with the cutting roller 150. When the cutting roller 150 rotates, the movement trajectory of the cutting knife 160 is elliptical. At this time, the cutting knife 160 forms a jumping cutting on the mobile phone protective film 110. When the mobile phone protective film 110 is cut in a jumping manner, it is ensured that the mobile phone protective film 110 can still be completely cut when wrinkles appear on the mobile phone protective film 110, thereby avoiding the accumulation of the mobile phone protective film 110 at the cutting knife 160, thereby improving the efficiency of striping the mobile phone protective film 110 and reducing the scrap rate of the mobile phone protective film 110.

[0039] In one embodiment, the cutting roller 150 includes a plurality of first sections 151 and a plurality of second sections 152, the plurality of first sections 151 and the plurality of second sections 152 are alternately arranged, the overall extension direction of the cutting roller 150 is the front-to-back direction, the overall length of the cutting roller 150 is equal to the length of the positioning roller 130, the adjacent first sections 151 are fixedly connected to the second sections 152, the plurality of first sections 151 are coaxially arranged, the plurality of second sections 152 are coaxially arranged, and when the cutting roller 150 rotates, the rotation axis of the cutting roller 150 is the axis of the first section 151. The cutting knife 160 includes a knife disc 161 and a blade 162, the knife disc 161 of each cutting knife 160 is arranged on a second section 152, the blade 162 is coaxially fixedly arranged on the outer side wall of the knife disc 161, a through groove 163 is arranged in the middle of the knife disc 161 of the cutting knife 160, the knife disc 161 of the cutting knife 160 is sleeved on the outer side of the second section 152, and the knife disc 161 can move in the radial direction of the second section 152. When the cutting knife 160 is in the first state, the knife disc 161 is coaxial with the first section 151. When the cutting roller 150 rotates, the cutting knife 160 rotates smoothly, and the rotation axis of the cutting knife 160 is the same as the rotation axis of the cutting roller 150. When the cutting knife 160 is in the second state, the knife disc 161 is eccentric with the first section 151. Specifically, when the cutting knife 160 is in the second state, there is a gap between the axis of the knife disc 161 and the axis of the first section 151. When the cutting knife 160 changes from the first state to the second state, the knife disc 161 of the cutting knife 160 moves in the radial direction of the second section 152. When the cutting roller 150 rotates, the rotation trajectory of the cutting knife 160 is elliptical.

[0040] In one embodiment, the adjustment control unit includes multiple extrusion rods 210, multiple limit blocks 220 and multiple control cylinders 230. The limit blocks 220 can be telescopically set. Each limit block 220 is set along the radial direction of a second section 152. One end of the limit block 220 is connected to the second section 152, and the other end of the limit block 220 is inserted into the inside of the cutter disc 161. In the specific setting, a compression spring 250 is arranged inside the limit block 220, and the side wall of the through groove 163 of the cutter disc 161 is provided with a limit groove 240 along its own radial direction. One end of the limit block 220 is inserted into the limit groove 240. By setting the limit block 220, the cutter disc 161 can move in the direction of the limit groove 240. Under the action of the compression spring 250, the limit block 220 has a tendency to stretch, so that the cutter disc 161 is in a stable state. Each extrusion rod 210 is coaxially slidably connected with a first section 151, and each extrusion rod 210 is arranged to pass through a through groove 163 of a knife disc 161. Each extrusion rod 210 is provided with an extrusion block 260, and the extrusion block 260 is arranged in the extension direction of the through groove 163. In the initial state, the knife disc 161 is in a state coaxial with the axis of the first section 151. At this time, the extrusion block 260 does not squeeze the side wall of the through groove 163 of the knife disc 161. When the extrusion rod 210 slides along the axial direction of the first section 151, the extrusion block 260 can squeeze the knife disc 161, so that the knife disc 161 switches from the first state to the second state. At the same time, the compression spring 250 inside the limit block 220 is further compressed. When the extrusion rod 210 returns to the initial position, the compression spring 250 inside the limit block 220 can drive the limit block 220 to restore the initial length, and the limit block 220 drives the knife disc 161 to switch from the second state to the first state. Each regulating cylinder 230 can be telescopically arranged, and the length change of each regulating cylinder 230 can drive an extrusion rod 210 to move in the first section 151. Furthermore, each regulating cylinder 230 is coaxially arranged inside the first section 151, and the length change of the regulating cylinder 230 drives the extrusion rod 210 to move on the first section 151. At the same time, the extrusion rod 210 drives the extrusion block 260 to move synchronously, and when the flatness of the mobile phone protective film 110 in the cutting area of ​​any cutting knife 160 is less than the first preset value, the length of the regulating cylinder 230 at the corresponding position can change in time.

[0041] In one embodiment, the detection member includes a detection rod and a plurality of laser displacement sensors 270. The detection rod is fixedly mounted on the bracket 120. The plurality of laser displacement sensors 270 are mounted on the detection rod. Each laser displacement sensor 270 can detect the flatness of the mobile phone protective film 110 at the cutting area of ​​a cutting knife 160. Furthermore, the laser displacement sensor 270 emits a laser beam to illuminate the surface of the mobile phone protective film 110, receives the reflected light and calculates the displacement change, thereby detecting the flatness of the surface of the mobile phone protective film 110. By using the laser displacement sensor 270, the flatness of the mobile phone protective film 110 at the cutting area of ​​the cutting knife can be measured in a high-precision and non-contact manner.

[0042] In one embodiment, the control unit further includes a control panel, which can receive detection data of any laser displacement sensor 270, and the control panel can adjust the length of any control cylinder 230 according to the received detection data of the laser displacement sensor 270. Specifically, the control panel has a control program inside, and a first preset value can be input into the control program, and the first preset value is a reference value. When the laser displacement sensor 270 detects the flatness of the mobile phone protective film 110 in the cutting area of ​​the cutter, the control program can compare the actual detected flatness of the mobile phone protective film 110 in the cutting area of ​​the cutter with the first preset value. If the flatness of the mobile phone protective film 110 in the cutting area of ​​any cutter 160 is less than the first preset value, the control program can timely adjust the length of the control cylinder 230 in the corresponding area, thereby reducing the probability of the mobile phone protective film 110 accumulating in the cutting area of ​​the cutter 160.

[0043] In one embodiment, the bracket 120 is provided with a first drive motor and a second drive motor, the first drive motor is used to drive the cutting roller 150 to rotate, and the second drive motor is used to drive the positioning roller 130 to rotate. When the length of any one of the regulating cylinders 230 changes, the control panel can regulate the rotation speed of the first drive motor and the second drive motor. Specifically, in the initial state, the cutting knife 160 is in the first state, and the flatness of the mobile phone protective film 110 at the cutting area of ​​the cutting knife 160 is greater than or equal to the first preset value. At this time, the rotation speeds of the first drive motor and the second drive motor match the movement speed of the mobile phone protective film 110 on the bracket 120. When the flatness of the mobile phone protective film 110 in the cutting area of ​​any cutting knife 160 is less than the first preset value, the cutting knife 160 at the corresponding position is switched from the first state to the second state, and the control program in the control panel simultaneously regulates the rotational speeds of the first drive motor and the second drive motor. At this time, the control program in the control panel increases the rotational speed adjustment of the first drive motor and the second drive motor, and the rotational speeds of the positioning roller 130 and the cutting roller 150 increase. The speed at which the cutting roller 150 drives part of the cutting knife 160 to rotate elliptically increases, thereby ensuring that the elliptically rotating cutting knife 160 can completely cut the mobile phone protective film 110.

[0044] In one embodiment, each second section 152 is provided with an adjustment rod 310, and each adjustment rod 310 can adjust the position of the limit block 220. Specifically, the limit block 220 includes a fixed portion and a sliding portion, and the fixed portion has a sliding groove inside, and the fixed portion is always in contact with the second section 152. One end of the sliding portion is arranged in the limit groove 240, and the other end of the sliding portion is slidably arranged in the sliding groove. The compression spring 250 is arranged in the sliding groove. The outer wall of the adjustment rod 310 is provided with a threaded groove, and the second section 152 is provided with a threaded hole. The adjustment rod 310 is threadedly connected to the second section 152. When the adjustment rod 310 rotates, The adjusting rod 310 moves in the axial direction of the second section 152, and the end of the adjusting rod 310 is rotatably connected to the fixed part of the limit block 220. The rotation of the adjusting rod 310 can adjust the position of the limit block 220 in the axial direction of the second section 152. When the limit block 220 moves in the axial direction of the second section 152, the distance between the two adjacent knife discs 161 can change. When the distance between the two adjacent knife discs 161 changes, the distance between the multiple cutting rings 140 arranged on the positioning roller 130 can be changed synchronously, ensuring that the cutting knife 160 can cooperate with the cutting ring 140 to cut the mobile phone protective film 110.

[0045] In one embodiment, a driving cylinder 320 is provided on the bracket 120 to drive the cutting roller 150 to move in the up and down direction of the bracket 120; the driving cylinder 320 can adjust the distance between the cutting roller 150 and the positioning roller 130. Specifically, the control panel can control the length of the driving cylinder 320. In the early stage of cutting the mobile phone protective film 110 into strips, the control panel controls the driving cylinder 320 to adjust the distance between the cutting roller 150 and the positioning roller 130, so that the staff can insert the mobile phone protective film 110 between the cutting roller 150 and the positioning roller 130. After the mobile phone protective film 110 is inserted between the cutting roller 150 and the positioning roller 130, the control panel can control the length of the driving cylinder 320 to change again. At this time, the end of the mobile phone protective film 110 has passed the cutting point between the cutting knife 160 and the cutting ring 140. At this time, the control panel independently controls multiple cutting knives 160 to change from the first state to the second state at the same time, and the control panel drives the first drive motor and the second drive motor to drive the positioning roller 130 and the cutting roller 150 to rotate quickly for one circle. At this time, the cutting knife 160 completes the cutting of the end of the mobile phone protective film 110 in the second state. Subsequently, the control panel controls multiple cutting knives 160 to change from the second state to the first state, and the staff pulls the mobile phone protective film 110 after cutting and stripping to be rolled up by the retractable member. Further, the subsequent cutting and stripping of the mobile phone protective film 110 will be automatically completed, and the first state or the second state of each cutting knife 160 is determined by the flatness of the mobile phone protective film 110 at the cutting area of ​​each cutting knife 160.

[0046] In one embodiment, the retractable member includes an unwinding roller 340 and a winding roller 330. The unwinding roller 340 is rotatably arranged on the bracket 120. The bracket 120 is provided with a first driving source for driving the unwinding tube to rotate on the bracket 120. The first driving source is a first active motor. The first active motor is used to drive the unwinding roller 340 to rotate. The winding roller 330 is rotatably arranged on the bracket 120. The bracket 120 is provided with a second driving source for driving the winding tube to rotate on the bracket 120. The winding roller 330 is arranged parallel to the unwinding roller 340. The second driving source is a second active motor. The second active motor is used to rotate the winding roller 330. The winding roller 330 is arranged at the right end of the bracket 120, and the unwinding roller 340 is arranged at the left end of the bracket 120. The winding roller 330 and the unwinding roller 340 are both detachably connected to the bracket 120.

[0047] In one embodiment, two winding rollers 330 are provided, and both winding rollers 330 are rotatably provided on the bracket 120. The rotation speed and rotation direction of the two winding rollers 330 are the same, and the two winding rollers 330 are in the same vertical plane. By providing two winding rollers 330, part of the mobile phone protective film 110 after cutting and stripping is wound on one of the winding rollers 330, and the other part of the mobile phone protective film 110 after cutting and stripping is wound on the other winding roller 330.

[0048] In one embodiment, a plurality of auxiliary rollers 350 are provided on the bracket 120, and the plurality of auxiliary rollers 350 are all rotatably connected to the bracket 120, and the plurality of auxiliary rollers 350 are arranged in parallel, and the plurality of auxiliary rollers 350 have differences in the horizontal height direction, and the plurality of auxiliary rollers 350 are arranged on both sides of the cutting roller 150, and the plurality of auxiliary rollers 350 are used to adjust the tension of the mobile phone protective film 110. Specifically, the mobile phone protective film 110 contacts the plurality of auxiliary rollers 350 at the same time, and the bracket 120 is provided with a plurality of auxiliary motors, each of which can drive an auxiliary roller 350 to rotate. By providing a plurality of auxiliary rollers 350, it is ensured that the mobile phone film can be tensioned, and at the same time, the excessive pulling when the mobile phone protective film 110 is cut into strips is reduced. In other embodiments, the bracket 120 is provided with a plurality of auxiliary motors, and the number of the auxiliary motors is half the number of the auxiliary rollers 350.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A slitting machine for producing mobile phone protective film, characterized in that: include: Bracket; The retractable part can unwind the uncut and unstripped mobile phone protective film, and can also rewind the cut and stripped mobile phone protective film; A positioning roller, the positioning roller is rotatably arranged on the bracket, and a plurality of cutting rings are arranged on the positioning roller; The cutting roller is rotatably arranged on the bracket, and the cutting roller is arranged above the positioning roller, so that the mobile phone protective film that has not been cut into strips can enter between the cutting roller and the positioning roller; a plurality of cutting knives are arranged on the cutting roller, and each cutting knife is arranged corresponding to a cutting ring, and each cutting knife has a first state coaxial with the cutting roller, and each cutting knife also has a second state eccentric to the cutting roller; the cutting roller and the positioning roller have the same rotation speed and opposite rotation direction; A detection part, which is used to detect the flatness of the mobile phone protective film at the cutting area of ​​each cutting knife; An adjustment control, the adjustment control is used to switch any one or more cutting knives between a first state and a second state; when the flatness of the mobile phone protective film at a cutting area of ​​any cutting knife is greater than or equal to a first preset value, the cutting knife at the corresponding position is in the first state; when the flatness of the mobile phone protective film at a cutting area of ​​any cutting knife is less than the first preset value, the cutting knife at the corresponding position is switched from the first state to the second state; The cutting roller comprises a plurality of first sections and a plurality of second sections, the plurality of first sections and the plurality of second sections are alternately arranged, the first section is fixedly connected to the second section, the plurality of first sections are coaxially arranged, and the plurality of second sections are coaxially arranged; the cutting knife comprises a knife disc and a blade, the knife disc of each cutting knife is arranged on a second section, and the blade is coaxially fixedly arranged on the outer side wall of the knife disc; the knife disc can move in the radial direction of the second section; when the cutting knife is in the first state, the knife disc is coaxial with the first section, and when the cutting knife is in the second state, the knife disc is eccentric with the first section; The adjustment control unit includes multiple extrusion rods, multiple limit blocks and multiple adjustment cylinders. The limit blocks can be telescopically arranged. Each limit block is arranged along the radial direction of a second section. One end of the limit block is connected to the second section, and the other end of the limit block is inserted into the inside of the cutter disc; each extrusion rod is coaxially slidably connected to a first section, and each extrusion rod is provided with an extrusion block. When the extrusion rod slides along the axial direction of the first section, the extrusion block can squeeze the cutter disc; each adjustment cylinder can be telescopically arranged, and the length change of each adjustment cylinder can drive the movement of an extrusion rod in the first section.

2. The slitting machine for producing mobile phone protective film according to claim 1, characterized in that: The detection component includes a detection rod and multiple laser displacement sensors. The detection rod is fixed on a bracket, and the multiple laser displacement sensors are arranged on the detection rod. Each laser displacement sensor can detect the flatness of the mobile phone protective film at a cutting area of ​​a cutting knife.

3. The slitting machine for producing mobile phone protective film according to claim 2, characterized in that: The control unit also includes a control board, which can receive detection data from any laser displacement sensor, and can adjust the length of any control cylinder according to the received detection data from the laser displacement sensor.

4. The slitting machine for producing mobile phone protective film according to claim 3, characterized in that: A first drive motor and a second drive motor are arranged on the bracket. The first drive motor is used to drive the cutting roller to rotate, and the second drive motor is used to drive the positioning roller to rotate. When the length of any regulating cylinder changes, the control panel can regulate the rotation speed of the first drive motor and the second drive motor.

5. The slitting machine for producing mobile phone protective film according to claim 1, characterized in that: Each second section is provided with an adjusting rod, and each adjusting rod can adjust the position of the limit block. When the limit block moves in the direction of the axis of the second section, the distance between two adjacent cutter discs can be changed.

6. The slitting machine for producing mobile phone protective film according to claim 1, characterized in that: The bracket is provided with a driving cylinder for driving the cutting roller to move in the up and down directions of the bracket; the driving cylinder can adjust the distance between the cutting roller and the positioning roller.

7. The slitting machine for producing mobile phone protective film according to claim 1, characterized in that: The retracting and unwinding component includes an unwinding roller and a winding roller. The unwinding roller is rotatably arranged on a bracket, and a first driving source for driving the unwinding tube to rotate on the bracket is arranged on the bracket; the winding roller is rotatably arranged on the bracket, and a second driving source for driving the winding tube to rotate on the bracket is arranged on the bracket. The winding roller is arranged parallel to the unwinding roller.

8. The slitting machine for producing mobile phone protective film according to claim 1, characterized in that: A plurality of auxiliary rollers are arranged on the bracket, and the plurality of auxiliary rollers are rotatably connected to the bracket, the plurality of auxiliary rollers are arranged in parallel, the plurality of auxiliary rollers have differences in horizontal height directions, the plurality of auxiliary rollers are arranged on both sides of the cutting roller, and the plurality of auxiliary rollers are used to adjust the tension of the mobile phone protective film.

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