Conductive carrier tape sheet with three-layer structure and preparation method thereof

Abstract

The invention discloses a three-layer structure conductive carrier tape sheet and a preparation method thereof, the three-layer structure conductive carrier tape sheet comprises an inner layer, the top of the inner layer is provided with a top layer, and the bottom of the inner layer is provided with a bottom layer; the preparation method comprises the following steps: S1, granulating; s2, extrusion molding; s3, calendaring and forming; s4, material rolling; the polycarbonate, the high impact polystyrene and the acrylonitrile-butadiene-styrene copolymer resin are made into the composite sheet, the tensile strength of the carrier tape sheet can be improved, the maleic anhydride grafted compatilizer can be used as a macromolecular interface coupling agent, a compatilizer and a dispersion accelerator, and the tensile strength of the carrier tape sheet can be improved. The tensile strength and the impact strength of the carrier tape sheet can be improved, high filling is realized, the use amount of resin is reduced, the processing rheological property is improved, and the surface smoothness is improved; meanwhile, the maleic anhydride grafted compatilizer can be used as a toughening agent of polycarbonate and high impact polystyrene, so that the polycarbonate and the high impact polystyrene keep excellent physical properties and toughness.

Description

Technical Field

[0001] The present invention relates to the field of carrier technology, and in particular to a three-layer conductive carrier sheet and a preparation method thereof. Background Art

[0002] Carrier tape refers to a strip product used in the field of electronic packaging. It has a specific thickness and has holes (also called pockets) for holding electronic components and positioning holes for indexing and positioning evenly distributed along its length.

[0003] The existing Chinese invention patent document with announcement number CN113402833B discloses a conductive composition, a preparation method and a carrier tape. By increasing the chemical action of the resin component on carbon black, no or very little carbon deposits on the die lip are generated during the production process of the carrier tape. At the same time, the carrier tape prepared from the conductive composition has good tensile strength.

[0004] Although the above-mentioned conductive composition, preparation method and carrier tape can solve the corresponding technical problems, the preparation and processing technology of the conductive composition is relatively complicated and has no toughening effect, resulting in insufficient rigidity and toughness of the carrier tape sheet.

[0005] To this end, a three-layer conductive carrier sheet and a preparation method thereof are proposed. Summary of the invention

[0006] The technical task of the present invention is to provide a three-layer conductive carrier sheet and a preparation method thereof to solve the above problems.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A three-layer conductive carrier sheet, comprising an inner layer, a top layer is provided on the top of the inner layer, and a bottom layer is provided at the bottom of the inner layer;

[0009] The inner layer comprises the following components by weight: 35-65 parts of polycarbonate, 20-30 parts of high-impact polystyrene, 10-15 parts of acrylonitrile-butadiene-styrene copolymer resin, 5-10 parts of conductive carbon black, 2-6 parts of antioxidant and 2-6 parts of maleic anhydride grafted compatibilizer;

[0010] The top layer and the bottom layer respectively include the following components in parts by weight: 45-75 parts of polycarbonate, 30-40 parts of high-impact polystyrene, 20-25 parts of acrylonitrile-butadiene-styrene copolymer resin, 7-12 parts of conductive carbon black, 3-9 parts of antioxidant and 4-8 parts of maleic anhydride grafted compatibilizer.

[0011] The present invention also provides a method for preparing the above-mentioned three-layer conductive carrier sheet, comprising the following steps:

[0012] S1, granulation: after the components of the inner layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder A through a screw feeder, and extruded and granulated by extruder A to obtain inner layer sheet pellets; after the components of the top layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder B through a screw feeder, and extruded and granulated by extruder B to obtain top layer sheet pellets; after the components of the bottom layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder C through a screw feeder, and extruded and granulated by extruder C to obtain bottom layer sheet pellets;

[0013] S2, extrusion molding: the inner layer, top layer and bottom layer sheet pellets in step S1 are respectively fed into extruder D, extruder E and extruder F through a screw feeder, and then extruded into inner layer, top layer and bottom layer sheets through the same die, and the top layer sheet, inner layer sheet and bottom layer sheet are stacked from top to bottom in sequence to obtain a three-layer structure sheet;

[0014] S3, calendering: the three-layer structure sheet in step S2 is calendered into a sheet with a certain thickness and surface shape to obtain a three-layer structure conductive carrier sheet;

[0015] S4, coiling: the three-layer conductive carrier sheet in step S3 is subjected to edge trimming, pulling and coiling through a coiling device for subsequent processing.

[0016] The present invention further provides a preparation device for a three-layer conductive carrier sheet, comprising the winding device described above, wherein the winding device comprises a mounting plate, on which a traction mechanism, a pressing mechanism, a distance adjustment mechanism, a limiting mechanism, a dust cleaning mechanism and a cutting mechanism are arranged, the distance adjustment mechanism is provided with a cutter A, a connecting mechanism is provided between the distance adjustment mechanism and the limiting mechanism, the pressing mechanism and the traction mechanism are sequentially arranged along the traction direction of the three-layer conductive carrier sheet, the cutter A, the distance adjustment mechanism, the limiting mechanism, the connecting mechanism, the dust cleaning mechanism and the cutting mechanism are all located above the traction mechanism, and the distance adjustment mechanism, the cutter A, the limiting mechanism, the dust cleaning mechanism and the cutting mechanism are sequentially arranged along the traction direction of the three-layer conductive carrier sheet;

[0017] The mounting plate is used to provide a mounting base for the traction mechanism, the pressing mechanism, the distance adjustment mechanism, the limiting mechanism, the dust cleaning mechanism and the cutting mechanism;

[0018] The traction mechanism is used to traction and winding operation of the three-layer structure conductive carrier sheet;

[0019] The pressing mechanism is used to press the three-layer conductive carrier sheet;

[0020] The cutter A is used to perform edge trimming on the three-layer conductive carrier sheet, and two cutters A are arranged in a front and a rear direction;

[0021] The distance adjustment mechanism is used to adjust the distance between the two cutters A according to the trimming requirements;

[0022] The limiting mechanism is used to limit the position of the three-layer conductive carrier sheet;

[0023] The connecting mechanism is used to realize the local structural connection operation between the distance adjustment mechanism and the limiting mechanism;

[0024] The dust cleaning mechanism is used to clean the three-layer conductive carrier sheet;

[0025] The cutting mechanism is used to cut the three-layer conductive carrier sheet.

[0026] Preferably, the traction mechanism comprises a guide roller A, a guide roller B, a winding roller A and a winding roller B, the guide roller A and the guide roller B are sequentially arranged along the traction direction of the carrier sheet, the shafts of the guide roller A, the guide roller B, the winding roller A and the winding roller B are respectively rotatably connected to the front side of the mounting plate, the winding roller A is located between the guide roller A and the guide roller B, the winding roller B is located below the guide roller B, the rear side of the mounting plate is provided with a driving member for driving the winding roller A and the winding roller B to rotate, and the cutter A is located above the guide roller A;

[0027] Among them, the driving member includes a support installed on the rear side of the mounting plate, a motor is installed on the top of the support, the ends of the shafts of the winding roller A and the winding roller B respectively pass through the rear side of the mounting plate and are fixedly connected to a pulley, the two pulleys are connected by belt transmission, and the output shaft of the motor is fixedly connected to one of the pulleys.

[0028] Preferably, the clamping mechanism comprises a pressing roller A and a pressing roller B, a gap is formed between the pressing roller A and the pressing roller B for the carrier sheet to pass through, the shaft of the pressing roller A is rotatably connected to the front side of the mounting plate, the pressing roller A is located on one side of the guide roller A, and a height adjusting member for adjusting the gap height between the pressing roller B and the pressing roller A is provided on the mounting plate;

[0029] Among them, the height adjusting member includes an upper protrusion and a lower protrusion, the lower protrusion is rotatably connected to a screw rod, the surface of the screw rod is threadedly sleeved with a wire sleeve, the mounting plate is provided with a through hole for the wire sleeve to pass through, the inner wall surface of the through hole is slidably connected to the surface of the wire sleeve, and the shaft of the pressure roller B is rotatably connected to the front side of the wire sleeve.

[0030] Preferably, the distance adjustment mechanism includes a bidirectional screw, one end of which is connected to the front side of the mounting plate, and the bidirectional screw is located on one side of the pressure roller B. A movable block is threadedly sleeved on both the front and rear sides of the surface of the bidirectional screw, and the movable block is arranged in a one-to-one correspondence with the cutter A, and each of the cutters A is respectively installed on the corresponding movable block.

[0031] Preferably, the limiting mechanism includes a guide roller C and a retaining ring, the shaft of the guide roller C is rotatably connected to the front side of the mounting plate, the guide roller C is located above the winding roller A, and the retaining ring is provided with a sliding sleeve on the front and rear sides of the surface of the guide roller C respectively, the movable block and the retaining ring are arranged in a one-to-one correspondence, and the connecting mechanism is provided between the movable block and the corresponding retaining ring.

[0032] Preferably, the connecting mechanism includes a screw tube, one end of which is fixedly connected to the movable block, the inner cavity of the screw tube is threadedly connected with a stud, the end of the stud away from the screw tube is fixedly connected with a positioning column, the retaining ring is provided with a positioning hole adapted to the positioning column, and one end of the positioning column is inserted into the inner cavity of the corresponding positioning hole.

[0033] Preferably, the dust cleaning mechanism comprises a lower shell, a dust sweeping member and a dust collecting member, the lower shell is fixedly connected to the front side of the mounting plate, the lower shell is located on one side of the guide roller C, through holes for the carrier sheet to pass through are respectively opened on both sides of the lower shell, and the dust sweeping member is respectively provided at the top and bottom of the inner wall of the lower shell;

[0034] The dust sweeping member includes a convex strip and a brush, wherein the convex strip is installed on the inner wall surface of the lower shell, and the brush is fixedly connected to the opposite sides of the two convex strips, and the side of the brush away from the convex strip can contact the surface of the carrier sheet;

[0035] The dust collecting component includes an upper shell, which is integrally formed on the top of the lower shell, an exhaust fan is installed through the top of the upper shell, a dust hood is installed on the top and bottom of the inner cavity of the lower shell, a duct is connected between the dust hood and the upper shell, and the inner cavity of the upper shell is provided with at least two filters arranged up and down.

[0036] Preferably, the cutting mechanism includes a frame, which is fixedly connected to the front side of the mounting plate, one side of the frame is fixedly connected to the upper shell, a vertically arranged cylinder is installed at the top of the inner cavity of the frame, the output end of the cylinder is fixedly connected to a horizontally arranged movable plate, a cutter B is installed at the bottom of the movable plate, and the cutter B is located above the carrier sheet.

[0037] Compared with the prior art, the advantages and positive effects of the present invention are:

[0038] 1. The present invention can improve the tensile strength of the carrier sheet by making polycarbonate, high-impact polystyrene and acrylonitrile-butadiene-styrene copolymer resin into a composite sheet. The maleic anhydride grafted compatibilizer can be used as a polymer interface coupling agent, a compatibilizer and a dispersion promoter, which is helpful to improve the tensile and impact strength of the carrier sheet, achieve high filling, reduce the amount of resin, improve processing rheology, and improve surface finish; at the same time, the maleic anhydride grafted compatibilizer can be used as a toughening agent for polycarbonate and high-impact polystyrene to maintain excellent physical properties and toughness;

[0039] 2. The present invention uses the cutter A, the limiting mechanism, the cleaning mechanism and the cutting mechanism in coordination, so that the winding device has the functions of trimming, limiting, cleaning, smoothing and cutting, thereby realizing multi-functionality and miniaturization of the equipment; through the coordinated use of the distance adjustment mechanism and the connecting mechanism, the cutter A and the limiting mechanism can be synchronously adjusted according to the trimming requirements, which not only improves the application range of the winding device, but also helps to improve the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 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 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.

[0041] Figure 1 This is a flow chart of a method for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention;

[0042] Figure 2 A three-dimensional schematic diagram of the structure of a device for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention Figure 1 ;

[0043] Figure 3 A three-dimensional schematic diagram of the structure of a device for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention Figure 2 ;

[0044] Figure 4 It is a structural stereoscopic schematic diagram of a cutter A, a distance adjustment mechanism and a limit mechanism of a device for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention;

[0045] Figure 5 It is a structural three-dimensional exploded schematic diagram of a distance adjustment mechanism, a limit mechanism and a connection mechanism of a preparation device for a three-layer conductive carrier sheet according to an embodiment of the present invention;

[0046] Figure 6It is a structural three-dimensional exploded schematic diagram of the movable blocks and the connecting mechanism of the preparation device of the three-layer structure conductive carrier sheet according to the embodiment of the present invention;

[0047] Figure 7 It is a structural stereoscopic schematic diagram of a dust cleaning mechanism of a device for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention;

[0048] Figure 8 It is a schematic exploded perspective view of the structure of a dust cleaning mechanism of a device for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention;

[0049] Fig. 9 It is a schematic diagram of a three-dimensional cutaway structure of a lower housing and a dust collecting cover of a device for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention;

[0050] Fig.10 It is a structural stereoscopic schematic diagram of a cutting mechanism of a device for preparing a three-layer conductive carrier sheet according to an embodiment of the present invention.

[0051] In the figure: 100, mounting plate;

[0052] 200, traction mechanism; 210, guide roller A; 220, guide roller B; 230, winding roller A; 240, winding roller B; 250, driving member; 251, support; 252, motor; 253, pulley;

[0053] 300, clamping mechanism; 310, pressing roller A; 320, pressing roller B; 330, height adjustment member; 331, upper convex block; 332, lower convex block; 333, screw rod; 334, screw sleeve; 335, hand wheel A;

[0054] 400, cutter A;

[0055] 500, pitch adjustment mechanism; 510, bidirectional screw; 520, movable block; 530, hand wheel B;

[0056] 600, limiting mechanism; 610, guide roller C; 620, retaining ring; 621, positioning hole;

[0057] 700, connecting mechanism; 710, screw tube; 720, stud; 730, positioning column; 740, knob;

[0058] 800, dust cleaning mechanism; 810, lower shell; 820, dust sweeping member; 821, convex strip; 822, brush; 830, dust collecting member; 831, upper shell; 832, exhaust fan; 833, dust collecting hood; 834, duct; 835, filter screen; 836, inspection panel;

[0059] 900, cutting mechanism; 910, frame; 911, cutting groove; 920, cylinder; 930, moving plate; 940, cutter B; 950, guide rod; 960, guide tube. DETAILED DESCRIPTION

[0060] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0061] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0062] Example 1

[0063] A three-layer conductive carrier sheet according to an embodiment of the present invention comprises an inner layer, a top layer is provided on the top of the inner layer, and a bottom layer is provided at the bottom of the inner layer;

[0064] The inner layer comprises the following components by weight: 35-65 parts of polycarbonate, 20-30 parts of high-impact polystyrene, 10-15 parts of acrylonitrile-butadiene-styrene copolymer resin, 5-10 parts of conductive carbon black, 2-6 parts of antioxidant and 2-6 parts of maleic anhydride grafted compatibilizer;

[0065] The top layer and the bottom layer respectively include the following components in parts by weight: 45-75 parts of polycarbonate, 30-40 parts of high-impact polystyrene, 20-25 parts of acrylonitrile-butadiene-styrene copolymer resin, 7-12 parts of conductive carbon black, 3-9 parts of antioxidant and 4-8 parts of maleic anhydride grafted compatibilizer.

[0066] Example 2

[0067] like Figure 1 As shown, the present embodiment provides a method for preparing a three-layer conductive carrier sheet, comprising the following steps:

[0068] S1, granulation: after the components of the inner layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder A through a screw feeder, and extruded and granulated by extruder A to obtain inner layer sheet pellets; after the components of the top layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder B through a screw feeder, and extruded and granulated by extruder B to obtain top layer sheet pellets; after the components of the bottom layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder C through a screw feeder, and extruded and granulated by extruder C to obtain bottom layer sheet pellets;

[0069] S2, extrusion molding: the inner layer, top layer and bottom layer sheet pellets in step S1 are respectively fed into extruder D, extruder E and extruder F through a screw feeder, and then extruded into inner layer, top layer and bottom layer sheets through the same die, and the top layer sheet, inner layer sheet and bottom layer sheet are stacked from top to bottom in sequence to obtain a three-layer structure sheet;

[0070] S3, calendering: the three-layer structure sheet in step S2 is calendered into a sheet with a certain thickness and surface shape to obtain a three-layer structure conductive carrier sheet;

[0071] S4, coiling: the three-layer conductive carrier sheet in step S3 is subjected to edge trimming, pulling and coiling through a coiling device for subsequent processing.

[0072] Example 3

[0073] like Figure 2-Figure 10 As shown, a preparation device for a three-layer conductive carrier sheet provided in this embodiment includes the above-mentioned winding device, the winding device includes a vertically arranged mounting plate 100, on which a traction mechanism 200, a pressing mechanism 300, a distance adjustment mechanism 500, a limiting mechanism 600, a dust cleaning mechanism 800 and a cutting mechanism 900 are arranged, a cutter A400 is arranged on the distance adjustment mechanism 500, a connecting mechanism 700 is arranged between the distance adjustment mechanism 500 and the limiting mechanism 600, the pressing mechanism 300 and the traction mechanism 200 are sequentially arranged along the traction direction of the three-layer conductive carrier sheet, the cutter A400, the distance adjustment mechanism 500, the limiting mechanism 600, the connecting mechanism 700, the dust cleaning mechanism 800 and the cutting mechanism 900 are all located above the traction mechanism 200, and the distance adjustment mechanism 500, the cutter A400, the limiting mechanism 600, the dust cleaning mechanism 800 and the cutting mechanism 900 are sequentially arranged along the traction direction of the three-layer conductive carrier sheet;

[0074] The mounting plate 100 is used to provide a mounting base for the traction mechanism 200, the pressing mechanism 300, the distance adjustment mechanism 500, the limiting mechanism 600, the dust cleaning mechanism 800 and the cutting mechanism 900;

[0075] The traction mechanism 200 is used to traction and winding operation of the three-layer structure conductive carrier sheet;

[0076] The pressing mechanism 300 is used to press the three-layer conductive carrier sheet;

[0077] The cutter A400 is used to trim the three-layer conductive carrier sheet, and two cutters A400 are arranged front and back;

[0078] The distance adjustment mechanism 500 is used to adjust the distance between the two cutters A400 according to the trimming requirements;

[0079] The limiting mechanism 600 is used to limit the three-layer conductive carrier sheet;

[0080] The connecting mechanism 700 is used to realize the local structural connection operation between the distance adjusting mechanism 500 and the limiting mechanism 600;

[0081] The dust cleaning mechanism 800 is used to clean the three-layer conductive carrier sheet;

[0082] The cutting mechanism 900 is used to cut the three-layer conductive carrier sheet.

[0083] The traction mechanism 200 includes a guide roller A210, a guide roller B220, a winding roller A230 and a winding roller B240. The guide roller A210 and the guide roller B220 are sequentially arranged along the traction direction of the carrier sheet. The shafts of the guide roller A210, the guide roller B220, the winding roller A230 and the winding roller B240 are respectively rotatably connected to the front side of the mounting plate 100. The winding roller A230 is located between the guide roller A210 and the guide roller B220. The winding roller B240 is located below the guide roller B220. A driving member 250 for driving the winding roller A230 and the winding roller B240 to rotate is provided on the rear side of the mounting plate 100. The cutter A400 is located between the guide roller A210 and the guide roller B220. 10; the driving member 250 includes a support 251 installed on the rear side of the mounting plate 100, and a motor 252 is installed on the top of the support 251. The ends of the shafts of the winding rollers A230 and B240 respectively penetrate the rear side of the mounting plate 100 and are fixedly connected with a pulley 253. The two pulleys 253 are connected by a belt transmission, and the output shaft of the motor 252 is fixedly connected to one of the pulleys 253. By starting the motor 252, the cooperation between the pulley 253 and the belt can be utilized to drive the winding rollers A230 and B240 to rotate synchronously, thereby realizing the synchronous winding operation of the carrier sheet and the waste edge.

[0084] The clamping mechanism 300 includes a pressure roller A310 and a pressure roller B320 which are arranged from bottom to top, and a gap is formed between the pressure rollers A310 and B320 for the carrier sheet to pass through. The shaft of the pressure roller A310 is rotatably connected to the front side of the mounting plate 100, and the pressure roller A310 is located on one side of the guide roller A210. The mounting plate 100 is provided with a height-adjusting member 330 for adjusting the height of the gap between the pressure roller B320 and the pressure roller A310; the height-adjusting member 330 includes an upper protrusion 331 and a lower protrusion 332 which are arranged up and down, and a vertically arranged screw rod 333 is rotatably connected to the lower protrusion 332, and a threaded sleeve is threadedly sleeved on the surface of the screw rod 333 334, a through hole for the wire sleeve 334 to pass through is opened on the mounting plate 100, the inner wall surface of the through hole is slidably connected to the surface of the wire sleeve 334, the shaft of the pressing roller B320 is rotatably connected to the front side of the wire sleeve 334, the top end of the screw rod 333 movably passes through the top of the upper protrusion 331 and is fixedly connected with a handwheel A335, the penetration part of the upper protrusion 331 is rotatably connected to the surface of the screw rod 333 through a bearing, and by rotating the handwheel A335, the wire sleeve 334 and the pressing roller B320 can be driven to move upward or downward, and the height of the gap between the pressing roller A310 and the pressing roller B320 can be adjusted according to the thickness of the carrier sheet.

[0085] The distance adjustment mechanism 500 includes a bidirectional screw 510, one end of which is rotatably connected to the front side of the mounting plate 100 through a bearing, and the bidirectional screw 510 is located on one side of the pressure roller B320. A movable block 520 is threadedly sleeved on both the front and rear sides of the surface of the bidirectional screw 510. The movable block 520 and the cutter A400 are arranged in a one-to-one correspondence, and each cutter A400 is respectively installed on the corresponding movable block 520. A hand wheel B530 is fixedly connected to one end of the bidirectional screw 510 away from the mounting plate 100. By rotating the hand wheel B530, the two movable blocks 520 and the cutter A400 can be driven to move toward or away from each other, and the distance between the two cutters A400 can be adjusted according to the cutting width of the carrier sheet.

[0086] The limiting mechanism 600 includes a guide roller C610 and a retaining ring 620. The shaft of the guide roller C610 is rotatably connected to the front side of the mounting plate 100. The guide roller C610 is located above the winding roller A230. The retaining ring 620 is provided with a sliding sleeve on the front and rear sides of the surface of the guide roller C610, respectively. The movable block 520 and the retaining ring 620 are arranged in a one-to-one correspondence. The connecting mechanism 700 is provided between the movable block 520 and the corresponding retaining ring 620. The retaining ring 620 can be used to limit the two sides of the carrier sheet to prevent the carrier sheet from shifting and shaking. The inner wall surface of the retaining ring 620 is glued with a rubber pad, and the inner wall surface of the rubber pad is in contact with the surface of the guide roller C610. The rubber pad can increase the friction between the guide roller C610 and the retaining ring 620, which can ensure that the retaining ring 620 will not move easily after the connecting mechanism 700 is separated from the retaining ring 620, so as to facilitate the subsequent reconnection with the connecting mechanism 700.

[0087] The connecting mechanism 700 includes a screw tube 710, one end of which is fixedly connected to the movable block 520, the inner cavity of the screw tube 710 is threadedly connected with a stud 720, and the end of the stud 720 away from the screw tube 710 is fixedly connected with a positioning column 730, and a positioning hole 621 adapted to the positioning column 730 is opened on the retaining ring 620, and one end of the positioning column 730 is inserted into the inner cavity of the corresponding positioning hole 621. The movable block 520 and the retaining ring 620 can be connected through the connecting mechanism 700, so that the movable block 520 drives the cutter A 400 and the retaining ring 620 move synchronously, and by rotating the stud 720, the positioning column 730 is disengaged from the inner cavity of the positioning hole 621, and the retaining ring 620 can be unlocked. At this time, the limiting mechanism 600 is disengaged from the distance adjustment mechanism 500, and the distance adjustment mechanism 500, the cutter A400 and the connecting mechanism 700 can be rotated to facilitate the end of the carrier sheet to pass through the top of the guide roller A210. The end of the surface of the stud 720 close to the positioning column 730 is fixedly connected with a knob 740, and the stud 720 is convenient to rotate by the knob 740.

[0088] The dust cleaning mechanism 800 includes a lower shell 810, a dust sweeping member 820 and a dust collecting member 830. The lower shell 810 is fixedly connected to the front side of the mounting plate 100. The lower shell 810 is located on one side of the guide roller C610. Through holes for the carrier sheet to pass through are respectively opened on both sides of the lower shell 810. The dust sweeping member 820 is respectively provided at the top and bottom of the inner wall of the lower shell 810. The dust sweeping member 820 includes a convex strip 821 and a brush 822. The convex strip 821 is installed on the lower shell 810. 0, the two sides of the convex strips 821 opposite to each other are fixedly connected with a brush 822, and the side of the brush 822 away from the convex strips 821 can contact the surface of the carrier sheet. When the carrier sheet passes through the lower shell body 810 through the through hole, the surface of the carrier sheet can be swept by the dust sweeping piece 820, effectively preventing the floating dust generated by the cutting edge from remaining on the surface of the carrier sheet. At the same time, the dust sweeping piece 820 can also be used to smooth the carrier sheet to avoid wrinkles on the carrier sheet. The dust collecting member 830 includes an upper shell 831, which is integrally formed on the top of the lower shell 810, and an exhaust fan 832 is installed on the top of the upper shell 831. A dust collecting cover 833 is installed on the top and bottom of the inner cavity of the lower shell 810. A duct 834 is connected between the dust collecting cover 833 and the upper shell 831. The inner cavity of the upper shell 831 is provided with at least two filters 835 arranged up and down. By starting the exhaust fan 832, the dust collecting cover 83 can be used to collect dust. 3 The floating dust swept by the dust sweeping member 820 is sucked and filtered to effectively avoid secondary pollution of the floating dust. An inspection port is provided on the side of the upper shell 831 close to the guide roller C610. The filter 835 is movably inserted into the inner cavity of the upper shell 831. An inspection plate 836 for blocking the inspection port is detachably installed on the upper shell 831 by bolts, so that the inspection plate 836 can be removed later to disassemble, clean or replace the filter 835, which helps to improve the filtering effect of the filter 835.

[0089] The cutting mechanism 900 includes a frame 910, which is fixedly connected to the front side of the mounting plate 100, and one side of the frame 910 is fixedly connected to the upper shell 831. A vertically arranged cylinder 920 is installed on the top of the inner cavity of the frame 910, and a horizontally arranged moving plate 930 is fixedly connected to the output end of the cylinder 920. A cutter B940 is installed at the bottom of the moving plate 930. The cutter B940 is located above the carrier sheet. A cutting groove 911 adapted to the cutter B940 is provided at the bottom of the inner wall of the frame 910. When the cylinder 920 is started, the cutter B940 can be driven. 40 moves downward to achieve the cutting operation of the carrier sheet, both sides of the top of the movable plate 930 are fixedly connected with guide rods 950 which are arranged parallel to the cylinder 920, and the surface sliding sleeve of the guide rod 950 is provided with a guide tube 960, and the top of the guide tube 960 is fixedly connected to the inner wall surface of the frame 910. When the movable plate 930 moves up and down, it can drive the guide rod 950 to slide up and down in the inner cavity of the guide tube 960, and then it can play a guiding role for the movable plate 930, which helps to improve the stability of the movable plate 930 when it moves up and down, thereby helping to improve the neatness of the cut surface.

[0090] Working principle:

[0091] First, turn the hand wheel B530 for the first time, the hand wheel B530 drives the bidirectional screw 510 to rotate, under the action of the thread, the bidirectional screw 510 drives the two movable blocks 520 on its surface to move toward or away from each other, the movable blocks 520 drive the cutter A400 and the connecting mechanism 700 to move synchronously, and the connecting mechanism 700 drives the retaining ring 620 to slide on the surface of the guide roller C610, so that the cutter A400 and the retaining ring 620 can be synchronously adjusted to the appropriate position according to the trimming requirements;

[0092] Secondly, by turning the knob 740, the knob 740 drives the stud 720 and the positioning column 730 to rotate synchronously. Under the action of the thread, the stud 720 gradually enters the inner cavity of the screw tube 710, and the positioning column 730 gradually moves away from the inner cavity of the positioning hole 621, until the positioning column 730 is separated from the inner cavity of the positioning hole 621, the retaining ring 620 can be unlocked. At this time, the hand wheel B530 is turned for the second time. Since the connecting mechanism 700 is separated from the retaining ring 620, the movable block 520 is not constrained, so that the hand wheel B530 drives the bidirectional screw 510, the movable block 520, and the cutting The knife A400 and the connecting mechanism 700 rotate synchronously, so that the cutter A400 is away from the guide roller A210; the end of the three-layer conductive carrier sheet obtained by calendering is passed through the pressure roller A310 and the pressure roller B320 and the guide roller A210 in sequence, and the hand wheel A335 is turned, so that the hand wheel A335 drives the screw rod 333 to rotate, and under the action of the thread, the screw rod 333 drives the wire sleeve 334 to slide downward in the through hole, and the wire sleeve 334 drives the pressure roller B320 to move toward the pressure roller A310 until the pressure roller B320 contacts the surface of the carrier sheet;

[0093] From the second time, turn the hand wheel B530 for the third time, the hand wheel B530 drives the bidirectional screw 510, the movable block 520, the cutter A400 and the connecting mechanism 700 to rotate synchronously, so that the cutter A400 contacts the guide roller A210, turn the knob 740, the knob 740 drives the stud 720 and the positioning column 730 to rotate synchronously, under the action of the thread, the stud 720 gradually moves away from the inner cavity of the screw tube 710, at the same time, turn the retaining ring 620 so that the positioning hole 621 is aligned with the positioning column 730, until When the positioning column 730 is gradually inserted into the inner cavity of the positioning hole 621, the connection operation between the retaining ring 620 and the movable block 520 is completed; the end of the carrier sheet is continuously pulled, and the cutter A400 can be used to trim the carrier sheet, and the trimmed carrier sheet passes through the guide roller C610, the lower shell 810 and the frame 910 in sequence, and is guided by the guide roller B220, and then fixed on the winding roller B240, and the waste edge is guided by the guide roller A210, and then fixed on the winding roller A230;

[0094] Then, the motor 252 is started, and the output shaft of the motor 252 drives the winding roller A230 and the winding roller B240 to rotate synchronously through the pulley 253 and the belt, thereby realizing the traction operation of the carrier sheet. During the traction process, the cutter A400 trims the carrier sheet, the retaining ring 620 limits the carrier sheet after trimming, and the brush 822 cleans the floating dust on the surface of the carrier sheet. At the same time, the brush 822 also smoothes the carrier sheet; the exhaust fan 832 is started, so that the swept floating dust is sucked into the inner cavity of the upper shell 831 through the dust hood 833 and the duct 834 in turn, and then filtered and discharged through the filter 835, effectively preventing secondary pollution of floating dust;

[0095] Finally, start the cylinder 920, and the output end of the cylinder 920 drives the movable plate 930 to move downward, and the movable plate 930 drives the guide rod 950 to slide in the inner cavity of the guide tube 960. The movable plate 930 also drives the cutter B940 to move downward synchronously, and the cutter B940 can be used to cut the carrier sheet.

[0096] Through the above specific implementations, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific implementations. On the basis of the disclosed implementations, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A three-layer conductive carrier sheet, characterized in that: It comprises an inner layer, a top layer is provided on the top of the inner layer, and a bottom layer is provided on the bottom of the inner layer; The inner layer comprises the following components by weight: 35-65 parts of polycarbonate, 20-30 parts of high-impact polystyrene, 10-15 parts of acrylonitrile-butadiene-styrene copolymer resin, 5-10 parts of conductive carbon black, 2-6 parts of antioxidant and 2-6 parts of maleic anhydride grafted compatibilizer; The top layer and the bottom layer respectively include the following components in parts by weight: 45-75 parts of polycarbonate, 30-40 parts of high-impact polystyrene, 20-25 parts of acrylonitrile-butadiene-styrene copolymer resin, 7-12 parts of conductive carbon black, 3-9 parts of antioxidant and 4-8 parts of maleic anhydride grafted compatibilizer.

2. A method for preparing the three-layer conductive carrier sheet according to claim 1, characterized in that: The steps include: S1, granulation: after the components of the inner layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder A through a screw feeder, and extruded and granulated by extruder A to obtain inner layer sheet pellets; after the components of the top layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder B through a screw feeder, and extruded and granulated by extruder B to obtain top layer sheet pellets; after the components of the bottom layer are uniformly mixed according to the mass distribution ratio, they are mixed in a mixer, and then fed into extruder C through a screw feeder, and extruded and granulated by extruder C to obtain bottom layer sheet pellets; S2, extrusion molding: the inner layer, top layer and bottom layer sheet pellets in step S1 are respectively fed into extruder D, extruder E and extruder F through a screw feeder, and then extruded into inner layer, top layer and bottom layer sheets through the same die, and the top layer sheet, inner layer sheet and bottom layer sheet are stacked from top to bottom in sequence to obtain a three-layer structure sheet; S3, calendering: the three-layer structure sheet in step S2 is calendered into a sheet with a certain thickness and surface shape to obtain a three-layer structure conductive carrier sheet; S4, coiling: the three-layer conductive carrier sheet in step S3 is subjected to edge trimming, pulling and coiling by a coiling device for subsequent processing.

3. The method for preparing a three-layer conductive carrier sheet according to claim 2, characterized in that: The winding device comprises a mounting plate (100), on which are arranged a traction mechanism (200), a pressing mechanism (300), a distance adjustment mechanism (500), a limiting mechanism (600), a dust cleaning mechanism (800) and a cutting mechanism (900); the distance adjustment mechanism (500) is provided with a cutter A (400); a connecting mechanism (700) is provided between the distance adjustment mechanism (500) and the limiting mechanism (600); the pressing mechanism (300) and the traction mechanism (200) are arranged in sequence along the The three-layer structure conductive carrier sheet is arranged in the pulling direction, the cutter A (400), the distance adjustment mechanism (500), the limit mechanism (600), the connection mechanism (700), the dust cleaning mechanism (800) and the cutting mechanism (900) are all located above the pulling mechanism (200), and the distance adjustment mechanism (500), the cutter A (400), the limit mechanism (600), the dust cleaning mechanism (800) and the cutting mechanism (900) are arranged in sequence along the pulling direction of the three-layer structure conductive carrier sheet; The mounting plate (100) is used to provide a mounting base for a traction mechanism (200), a pressing mechanism (300), a distance adjustment mechanism (500), a position limiting mechanism (600), a dust cleaning mechanism (800), and a cutting mechanism (900); The traction mechanism (200) is used to perform traction and winding operations on the three-layer conductive carrier sheet; The pressing mechanism (300) is used to press the three-layer conductive carrier sheet; The cutter A (400) is used to perform edge trimming on the three-layer conductive carrier sheet, and two cutters A (400) are arranged in a front-to-back manner; The distance adjustment mechanism (500) is used to adjust the distance between the two cutters A (400) according to the edge cutting requirements; The limiting mechanism (600) is used to perform a limiting operation on the three-layer conductive carrier sheet; The connecting mechanism (700) is used to realize the local structural connection operation of the distance adjustment mechanism (500) and the limiting mechanism (600); The dust cleaning mechanism (800) is used to clean the three-layer conductive carrier sheet; The cutting mechanism (900) is used to cut the three-layer conductive carrier sheet.

4. The method for preparing a three-layer conductive carrier sheet according to claim 3, characterized in that: The traction mechanism (200) comprises a guide roller A (210), a guide roller B (220), a winding roller A (230) and a winding roller B (240), wherein the guide roller A (210) and the guide roller B (220) are sequentially arranged along the traction direction of the carrier sheet, and the shafts of the guide roller A (210), the guide roller B (220), the winding roller A (230) and the winding roller B (240) are respectively rotatably connected to the front side of the mounting plate (100), the winding roller A (230) is located between the guide roller A (210) and the guide roller B (220), and the winding roller B (240) is located below the guide roller B (220). A driving member (250) for driving the winding roller A (230) and the winding roller B (240) to rotate is provided on the rear side of the mounting plate (100), and the cutter A (400) is located above the guide roller A (210); The driving member (250) comprises a support (251) mounted on the rear side of the mounting plate (100), a motor (252) being mounted on the top of the support (251), the ends of the shafts of the winding roller A (230) and the winding roller B (240) respectively passing through the rear side of the mounting plate (100) and being fixedly connected to a pulley (253), the two pulleys (253) being connected via a belt transmission, and the output shaft of the motor (252) being fixedly connected to one of the pulleys (253).

5. The method for preparing a three-layer conductive carrier sheet according to claim 4, characterized in that: The clamping mechanism (300) comprises a pressing roller A (310) and a pressing roller B (320), a gap for the carrier sheet to pass through is formed between the pressing roller A (310) and the pressing roller B (320), the shaft of the pressing roller A (310) is rotatably connected to the front side of the mounting plate (100), the pressing roller A (310) is located on one side of the guide roller A (210), and a height adjusting member (330) for adjusting the gap height between the pressing roller B (320) and the pressing roller A (310) is provided on the mounting plate (100); The height adjusting member (330) comprises an upper protrusion (331) and a lower protrusion (332), the lower protrusion (332) is rotatably connected to a screw rod (333), the surface of the screw rod (333) is threadedly sleeved with a threaded sleeve (334), the mounting plate (100) is provided with a through hole for the threaded sleeve (334) to pass through, the inner wall surface of the through hole is slidably connected to the surface of the threaded sleeve (334), and the shaft of the pressure roller B (320) is rotatably connected to the front side of the threaded sleeve (334).

6. The method for preparing a three-layer conductive carrier sheet according to claim 5, characterized in that: The pitch adjustment mechanism (500) comprises a bidirectional screw (510), one end of which is connected to the front side of the mounting plate (100), the bidirectional screw (510) is located on one side of the pressure roller B (320), and a movable block (520) is threadedly sleeved on both the front and rear sides of the surface of the bidirectional screw (510), the movable block (520) and the cutter A (400) are arranged in a one-to-one correspondence, and each of the cutters A (400) is respectively mounted on a corresponding movable block (520).

7. The method for preparing a three-layer conductive carrier sheet according to claim 6, characterized in that: The limiting mechanism (600) comprises a guide roller C (610) and a retaining ring (620), the shaft of the guide roller C (610) being rotatably connected to the front side of the mounting plate (100), the guide roller C (610) being located above the winding roller A (230), the retaining ring (620) being respectively provided with a sliding sleeve on the front side and the rear side of the surface of the guide roller C (610), the movable block (520) and the retaining ring (620) being provided in a one-to-one correspondence, and the connecting mechanism (700) being provided between the movable block (520) and the corresponding retaining ring (620).

8. The method for preparing a three-layer conductive carrier sheet according to claim 7, characterized in that: The connecting mechanism (700) comprises a screw tube (710), one end of which is fixedly connected to the movable block (520), the inner cavity of the screw tube (710) is threadedly connected to a stud (720), one end of the stud (720) away from the screw tube (710) is fixedly connected to a positioning column (730), and a positioning hole (621) adapted to the positioning column (730) is formed on the retaining ring (620), and one end of the positioning column (730) is inserted into the inner cavity of the corresponding positioning hole (621).

9. The method for preparing a three-layer conductive carrier sheet according to claim 7, characterized in that: The dust cleaning mechanism (800) comprises a lower shell (810), a dust sweeping member (820) and a dust collecting member (830); the lower shell (810) is fixedly connected to the front side of the mounting plate (100); the lower shell (810) is located on one side of the guide roller C (610); through holes for the carrier sheet to pass through are respectively provided on both sides of the lower shell (810); and the dust sweeping member (820) is respectively provided at the top and bottom of the inner wall of the lower shell (810); The dust sweeping member (820) comprises a convex strip (821) and a brush (822), wherein the convex strip (821) is mounted on the inner wall surface of the lower shell (810), and the brush (822) is fixedly connected to the opposite sides of the two convex strips (821), and the side of the brush (822) away from the convex strip (821) can contact the surface of the carrier sheet; The dust collecting member (830) comprises an upper shell (831), wherein the upper shell (831) is integrally formed on the top of the lower shell (810), an exhaust fan (832) is installed through the top of the upper shell (831), a dust collecting hood (833) is installed at the top and bottom of the inner cavity of the lower shell (810), a duct (834) is connected between the dust collecting hood (833) and the upper shell (831), and the inner cavity of the upper shell (831) is provided with at least two filter screens (835) arranged in an upper and lower manner.

10. The method for preparing a three-layer conductive carrier sheet according to claim 9, characterized in that: The cutting mechanism (900) comprises a frame (910), wherein the frame (910) is fixedly connected to the front side of the mounting plate (100), and one side of the frame (910) is fixedly connected to the upper shell (831). A vertically arranged cylinder (920) is installed at the top of the inner cavity of the frame (910), and a horizontally arranged movable plate (930) is fixedly connected to the output end of the cylinder (920). A cutter B (940) is installed at the bottom of the movable plate (930), and the cutter B (940) is located above the carrier sheet.

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