CN114986165A - Lead frame manufacturing apparatus, lead frame manufacturing method, and lead frame - Google Patents
Lead frame manufacturing apparatus, lead frame manufacturing method, and lead frame Download PDFInfo
- Publication number
- CN114986165A CN114986165A CN202210930033.0A CN202210930033A CN114986165A CN 114986165 A CN114986165 A CN 114986165A CN 202210930033 A CN202210930033 A CN 202210930033A CN 114986165 A CN114986165 A CN 114986165A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000004080 punching Methods 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 22
- 238000013016 damping Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 40
- 239000002184 metal Substances 0.000 claims description 40
- 230000000149 penetrating effect Effects 0.000 claims description 25
- 229910045601 alloy Inorganic materials 0.000 claims description 24
- 239000000956 alloy Substances 0.000 claims description 24
- 238000005498 polishing Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 18
- 230000033001 locomotion Effects 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 239000002585 base Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 239000012670 alkaline solution Substances 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 14
- 239000012535 impurity Substances 0.000 description 8
- 230000005291 magnetic effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
- B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades
Abstract
The invention discloses a manufacturing device of a lead frame, a manufacturing method of the lead frame and the lead frame, wherein the device comprises a base, wherein the upper surface of the base is fixedly connected with two vertical plates, and the vertical plates are fixedly connected with a processing mechanism; the processing mechanism comprises an installation block, the installation block is fixedly connected with the side wall of the vertical plate, a hydraulic cylinder is fixedly connected with the upper surface of the installation block, an output shaft of the hydraulic cylinder and the installation block penetrate through a sliding connection and a fixedly connected punching block, the punching block is provided with two sliding grooves, and an upper conductive block, a lower conductive block and a sliding block are connected in a damping sliding manner in the sliding grooves. Has the advantages that: the invention can automatically adjust the stamping stroke, can ensure the stamping effect when stamping lead frames with different thicknesses, and avoids damaging raw materials.
Description
Technical Field
The invention relates to the technical field of lead frame manufacturing, in particular to a lead frame manufacturing device, a lead frame manufacturing method and a lead frame.
Background
The circuit board is one of common parts in electronic products, a plurality of electronic elements are integrated in the circuit board, wherein the electronic elements comprise capacitors, resistors, inductors, diodes and the like, the electronic elements in the circuit board bear different division of labor respectively and are connected through lead frames, the lead frames are used as chip carriers of integrated circuits, the lead frames form key structural members of an electric circuit and play a role of bridges connected with external leads, the lead frames are required to be used in most semiconductor integrated blocks and are important basic materials in the electronic information industry, the lead frames are produced in various modes, and stamping is one of the manufacturing modes, and stamping is performed through a stamping device.
In the prior art, the stamping stroke of the existing stamping device needs to be manually adjusted, when raw materials with different thicknesses and different hardness are stamped, the manual adjustment is needed, otherwise, the possibility of damaging the surface of the raw material in the stamping process can occur, unnecessary loss is caused, the adjustment is carried out in a numerical control mode, certain subjective adjustment also exists, automatic adjustment cannot be carried out according to stamping materials by equipment, after the stamping is finished, the stamping position often leaves raised edges or rough edges, and the product quality is influenced, although the processing device for the raised edges and the rough edges exists in the prior art, the device is only simply combined with a stamping machine for use, the adaptive design is not carried out according to the stamping machine, the cost of the equipment is improved, the overall efficiency of the equipment is not high, and manual follow-up processing is adopted, not only the labor intensity is higher, but also the processing efficiency is low.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a lead frame manufacturing device, a lead frame manufacturing method and a lead frame.
In order to achieve the purpose, the invention adopts the following technical scheme:
the manufacturing device of the lead frame comprises a base, wherein two vertical plates are fixedly connected to the upper surface of the base, and a processing mechanism is fixedly connected to the vertical plates;
the processing mechanism comprises an installation block, the installation block is fixedly connected with the side wall of the vertical plate, the upper surface of the installation block is fixedly connected with a hydraulic cylinder, an output shaft of the hydraulic cylinder is connected with the installation block in a penetrating and sliding manner and is fixedly connected with a stamping block, the stamping block is provided with two sliding grooves, an upper conductive block, a lower conductive block and a sliding block are connected in the sliding grooves in a damping and sliding manner, the upper surface of the sliding block is fixedly connected with the lower surface of the lower conductive block, the lower surfaces of the two sliding blocks are fixedly connected with a stamping head together, an electric control cavity is arranged in the installation block, the inner end wall of the electric control cavity is fixedly connected with an electromagnet, the upper conductive block and the lower conductive block are electrically connected through wires, the inner side wall of the electric control cavity is fixedly connected with an annular metal plate, the inner side wall of the electric control cavity is connected with a sliding metal plate in a sliding manner, and a plurality of first springs are fixedly connected between the sliding metal plate and the inner end wall of the electric control cavity, the sliding metal plate, the annular metal plate and the hydraulic cylinder are electrically connected through a wire, the upper surface of the mounting block is fixedly connected with a rack, the lower surface of the mounting block is fixedly connected with two fixing columns, and the fixing columns and the stamping block penetrate through the sliding connection and extend into the corresponding sliding grooves.
Further, riser department is provided with autoloading mechanism, autoloading mechanism includes and runs through two second pivots and a first pivot of rotation being connected through the bearing with the riser, one section that first pivot is located between two risers is connected with first gear through one-way bearing rotation, first gear and rack toothing, one end interference fit that first pivot is located outside two risers has the second gear, one section interference fit that second pivot is located between two risers has the conveying roller, the second pivot is located two one section interference fit outside the riser has the third gear, two third gear meshing.
Further, the automatic feeding mechanism still includes and passes through the third pivot of rotation connection with the riser through the bearing, the one end interference fit that the third pivot is located outside two risers has the second band pulley, one of them second pivot interference fit has first band pulley, first band pulley has the hold-in range with the common cooperation of second band pulley.
Further, a polishing mechanism is arranged at the position of the vertical plates, the polishing mechanism comprises a hollow L-shaped block with one open end, the L-shaped block is fixedly connected with one of the vertical plates in a penetrating manner, the L-shaped block is connected with a U-shaped block and a sliding plate in a sealing and sliding manner, the U-shaped block is connected with the corresponding vertical plate in a penetrating and sliding manner, hydraulic oil is filled between the U-shaped block and the sliding plate, a plurality of fourth springs are fixedly connected between the sliding plate and the inner bottom wall of the L-shaped block, the lower surface of the U-shaped block is fixedly connected with a top column, the top column is connected with the bottom wall of the L-shaped block in a penetrating and sliding manner, one of the vertical plate side walls is fixedly connected with a sliding sleeve, a sliding column is sleeved in a sealing and sliding manner, a plurality of third springs are fixedly connected between the sliding column and the sliding sleeve, one of the second rotating shaft side walls is fixedly connected with three tooth blocks, and the upper surface of the sliding column is provided with a tooth-shaped bulge and an arc-shaped bulge, the sliding column is meshed with the tooth block.
Further, riser department is provided with absorbing mechanism, absorbing mechanism includes hollow F-shaped piece, F-shaped piece and one of them the riser runs through fixed connection, one of them riser lateral wall fixedly connected with bin, the F-shaped piece diapire runs through the first pipe fitting of fixedly connected with the L-shaped piece lateral wall jointly, the F-shaped piece diapire runs through the fixedly connected with fourth pipe fitting jointly with the sliding sleeve end wall, the L-shaped piece lateral wall runs through the fixedly connected with second pipe fitting jointly with the bin lateral wall, the sliding sleeve roof runs through the fixedly connected with third pipe fitting jointly with the bin lateral wall, the absorption hole has all been seted up to two lateral walls that the F-shaped piece is relative.
Further, the side wall of the conveying roller is provided with a rubber pad, and the size of the second gear is larger than that of the third gear.
Further, the limiting groove has been seted up to the sliding tray inside wall, sliding connection has the stopper in the limiting groove, the first spring of fixedly connected with between stopper and the limiting groove roof, stopper and the slider lateral wall fixed connection who corresponds.
Furthermore, all be provided with the check valve in first pipe fitting, second pipe fitting, third pipe fitting, the fourth pipe fitting.
The invention also provides a manufacturing method of the lead frame, which comprises the following steps:
s1, preparing raw materials: selecting alloy raw materials with proper thickness and hardness according to requirements;
s2, manufacturing by stamping: placing the raw material between two conveying rollers, starting a device, driving a punching head to descend through a hydraulic cylinder, and punching the raw material;
s3, flattening: flattening warped edges generated after the alloy sheet is punched when the punched alloy sheet is conveyed by a conveying roller;
s4, grinding and polishing: conveying the alloy sheet flattened by the conveying roller forwards continuously, and grinding, polishing and flattening burrs generated after stamping the alloy sheet by the continuous reciprocating motion of the U-shaped block when the alloy sheet passes through the U-shaped block;
s5, rolling: continuously rolling the alloy sheet after stamping, flattening, grinding and polishing under the rotation of a third rotating shaft;
s6, alkali washing: putting the punched and rolled material into a 40g/L sodium carbonate solution, washing oil on the surface of the material, and neutralizing an alkaline solution on the surface of the material by using a 50g/L acetic acid solution;
s7, drying: drying the lead frame subjected to alkali washing to evaporate the solution on the surface of the lead frame;
s8, cutting: and cutting the dried lead frame according to the required length.
The invention also provides a lead frame which is manufactured by using the manufacturing method.
The invention has the following advantages:
1. through the arrangement of the upper conductive block and the lower conductive block, in the stamping process, when the stamping head is contacted with raw materials, the lower conductive block and the upper conductive block are driven by the slide block to move upwards through the reaction force, the first spring is compressed at the same time, when the stamping process is finished, the raw materials are stamped out of the hole, the reaction force borne by the stamping head disappears instantly, at the moment, under the elasticity of the first spring, the slide block drives the lower conductive block to slide downwards instantly to be separated from the upper conductive block, so that the electromagnet is powered off, the sliding metal plate is separated from the annular conductive plate, the hydraulic cylinder is powered off and reset, after the stamping is finished, the hydraulic cylinder is reset automatically without too much stamping action, compared with the manhole adjustment or numerical control adjustment in the prior art, the manual subjective adjustment is not needed, and the stamping stroke of the manufacturing device can be adjusted automatically according to the thickness of the stamped raw materials, the damage of stamping raw materials caused by inaccurate manual adjustment is effectively avoided, and unnecessary economic loss is avoided;
2. when resetting is completed in stamping, the rack drives the first gear to rotate, and then the second gear is meshed with the third gear, so that the two conveying rollers reversely rotate to automatically feed the lower block to be stamped to the position below the stamping head;
3. the conveying rollers can convey materials and can press the warped edges generated by stamping to be flat;
4. the conveying roller can be used for feeding and raising and flattening edges, simultaneously, the conveying roller can also be meshed with the toothed protrusions of the sliding column through three tooth block intervals, and is matched with a third spring, so that the sliding column can make continuous reciprocating motion, then the top column can drive the sliding plate to make vertical reciprocating motion through the arc-shaped protrusions of the sliding column, further, the U-shaped block can make continuous reciprocating motion, burrs and burrs on the surface of the U-shaped block can be polished through polishing bristles on the surface of the U-shaped block, a special polishing device is not required to be additionally arranged, the equipment cost is greatly reduced, meanwhile, polishing actions are linked through stamping actions, the overall efficiency of equipment is greatly improved, the larger labor intensity of subsequent manual processing is avoided, and the processing efficiency is improved;
5. punching press action drive is carried, when flattening and polishing, can also absorb the granule that produces of polishing and get rid of, the alloy piece is when the F-shaped piece, through the reciprocating motion of sliding plate with the traveller, make the F-shaped piece incessant production suction in absorption hole department, thereby polish produced metal particle and impurity absorption with the alloy piece surface, and then the effectual granule of avoiding is along with the same roll-up of alloy piece, lead to surface damage, influence the performance and the outward appearance of lead frame, and absorbing mechanism also carries out the drive in coordination by the punching press action, make the linkage of whole device stronger, holistic efficiency is higher.
Drawings
Fig. 1 is a schematic structural diagram of a lead frame manufacturing apparatus according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view of FIG. 1 at B;
fig. 4 is a side view of a lead frame manufacturing apparatus according to the present invention;
FIG. 5 is an enlarged view at E in FIG. 4;
FIG. 6 is a cross-sectional view taken at C-C of FIG. 1;
FIG. 7 is an enlarged view at F in FIG. 6;
FIG. 8 is a cross-sectional view taken along line D-D of FIG. 1;
fig. 9 is an enlarged view of fig. 8 at G.
In the figure: the device comprises a base 1, risers 2, mounting blocks 3, hydraulic cylinders 4, stamping blocks 5, sliding grooves 6, upper conductive blocks 7, sliding blocks 8, lower conductive blocks 9, stamping heads 10, limiting grooves 11, limiting blocks 12, first springs 13, fixed columns 14, electric control cavities 15, electromagnets 16, annular metal plates 17, sliding metal plates 18, second springs 19, racks 20, first rotating shafts 21, first gears 22, second gears 23, second rotating shafts 24, conveying rollers 25, third gears 26, first pulleys 27, third rotating shafts 28, second pulleys 29, synchronous belts 30, toothed blocks 31, sliding sleeves 32, sliding columns 33, third springs 34, blocks 35L, sliding plates 36, fourth springs 37, top columns 38, blocks 39U, blocks 40F, storage tanks 41, first pipe fittings 42, second pipe fittings 43, third pipe fittings 44, fourth pipe fittings 45 and absorption holes 46.
Detailed Description
Referring to fig. 1-9, a manufacturing device of a lead frame comprises a base 1, wherein a stamping die is arranged on the base 1, a space is arranged below the stamping die to ensure that a stamped metal sheet can normally fall off, two vertical plates 2 are fixedly connected to the upper surface of the base 1, and a processing mechanism is fixedly connected to the vertical plates 2;
the processing mechanism comprises an installation block 3, the installation block 3 is fixedly connected with the side wall of a vertical plate 2, the upper surface of the installation block 3 is fixedly connected with a hydraulic cylinder 4, the hydraulic cylinder 4 can extend out when being electrified, and the power failure can be automatically reset, for the prior art, details are not described herein, an output shaft of the hydraulic cylinder 4 is in sliding connection with the installation block 3 in a penetrating way and is fixedly connected with a stamping block 5, the stamping block 5 is provided with two sliding grooves 6, an upper conductive block 7, a lower conductive block 9 and a sliding block 8 are in sliding connection in a damping way in the sliding grooves 6, the arrangement of the sliding in the damping way can avoid that the upper conductive block 7 slides upwards to cause the upper conductive block 7 and the lower conductive block 9 to contact again when the upper conductive block 7 and the lower conductive block 9 are separated, the upper surface of the sliding block 8 is fixedly connected with the lower surface of the lower conductive block 9, the lower surfaces of the two sliding blocks 8 are fixedly connected with a stamping head 10 together, an electric control cavity 15 is arranged in the installation block 3, the inner end wall of the electric control cavity 15 is fixedly connected with an electromagnet 16, the electromagnet 16, the upper conducting block 7 and the lower conducting block 9 are electrically connected through a conducting wire, the inner side wall of the electric control cavity 15 is fixedly connected with an annular metal plate 17, the annular metal plate 17 is made of aluminum alloy, the annular metal plate 17 is free of magnetism on the premise of ensuring good electric conductivity, the electromagnet 16 is prevented from influencing the annular metal plate, the inner side wall of the electric control cavity 15 is slidably connected with a sliding metal plate 18, the sliding metal plate 18 is made of ferromagnetic material, when the electromagnet 16 is electrified, magnetic force can be generated on the electromagnet, a plurality of first springs 13 are fixedly connected between the sliding metal plate 18 and the inner end wall of the electric control cavity 15, the sliding metal plate 18, the annular metal plate 17 and the hydraulic cylinder 4 are electrically connected through conducting wires, after the sliding metal plate 18 and the annular metal plate 17 are contacted, the hydraulic cylinder 4 can be electrified, the rack 20 is fixedly connected to the upper surface of the mounting block 3, and the two fixing columns 14 are fixedly connected to the lower surface of the mounting block 3, the fixed column 14 and the punching block 5 are connected in a penetrating and sliding manner and extend into the corresponding sliding groove 6, the fixed column 14 is arranged to enable the electric upper conductive block 7 to reset together when the punching block 5 resets, the hydraulic cylinder 4 is electrified to drive the punching block 5 to move downwards in the punching process, so that the punching head 10 approaches to the raw material to punch, when the punching head 10 is contacted with the raw material, the sliding block 8 drives the lower conductive block 9 and the upper conductive block 7 to move upwards through the reactive force, and simultaneously drives the limiting block 12 to compress the first spring 13, at the moment of completion of the punching process, after the raw material is punched out of the hole, the metal sheet of the punched hole falls, so that the reactive force borne by the punching head 10 disappears instantly, at the moment, under the elastic force of the first spring 13, the sliding block 8 drives the lower conductive block 9 to slide downwards instantly to be separated from the upper conductive block 7, so that the electromagnet 16 is powered off, under the elasticity of second spring 19, make slip metal sheet 18 and annular metal sheet 17 separation, make pneumatic cylinder 4 outage reset, when reseing, fixed column 14 drives conducting block 7 and resets, when last conducting block 7 and lower conducting block 9 contact once more, electro-magnet 16 is circular telegram once more and is produced magnetic force, thereby under magnetic force, make slip metal sheet 18, annular metal sheet 17 contact, pneumatic cylinder 4 circular telegram once more carries out the punching press, thereby make manufacturing installation's punching press stroke can adjust according to the thickness of punching press raw and other materials by oneself, effectual manual regulation inaccurate punching press raw and other materials that leads to damage is avoided unnecessary economic loss.
It is worth mentioning that the start and stop of the hydraulic cylinder 4 are controlled by using the annular metal plate 17 and the sliding metal plate 18, but the hydraulic cylinder 4 is directly controlled without using the upper conductive block 7 and the lower conductive block 9, because the current for controlling the circuit of the hydraulic cylinder 4 may be relatively large, and the distance between the upper conductive block 7 and the lower conductive block 9 is relatively short when the upper conductive block 7 and the lower conductive block 9 are separated, so that the hydraulic cylinder 4 is in a state similar to a capacitor, the dielectric medium is air, and the relatively large current is applied between the upper conductive block 7 and the lower conductive block 9, which may cause the air between the upper conductive block 7 and the lower conductive block 9 to be directly punctured, so that the hydraulic cylinder 4 cannot be normally powered off, and the second spring 19 may cause the annular metal plate 17 and the sliding metal plate 18 to be relatively far when separated, which may effectively avoid such a situation, so as to ensure the normal operation of the device.
In addition, the arrangement of the first spring 13 can buffer the impact force when the punching head 10 starts to contact with the raw material, thereby avoiding the damage of the punching head 10 caused by the excessive instantaneous impact force.
The automatic feeding mechanism is arranged at the vertical plate 2 and comprises two second rotating shafts 24 and a first rotating shaft 21 which are in running-through rotating connection with the vertical plate 2 through bearings, one section of the first rotating shaft 21, which is positioned between the two vertical plates 2, is rotatably connected with a first gear 22 through a one-way bearing, the one-way bearing is arranged so that when the rack 20 moves upwards to drive the first gear 22 to rotate, the first gear 22 can drive the first rotating shaft 21 to rotate, the rack 20 moves downwards to drive the first gear 22 to rotate, the first gear 22 only rotates relative to the first rotating shaft 21 and cannot drive the first rotating shaft to rotate, thereby avoiding the influence on stamping, the first gear 22 is meshed with the rack 20, one end of the first rotating shaft 21, which is positioned outside the two vertical plates 2, is in interference fit with the second gear 23, one section of the second rotating shaft 24, which is positioned between the two vertical plates 2, is in interference fit with a conveying roller 25, one section interference fit that second pivot 24 is located outside two risers 2 has third gear 26, two third gear 26 meshes, rack 20 when the punching press is accomplished back along with punching press piece 5 upward movement, drive first gear 22 through rack 20 and rotate, rethread second gear 23 and third gear 26's meshing, and two third gear 26's intermeshing, make two conveying roller 25 antiport, carry out autoloading, treat the punching press regional transport to punching press head 10 below with the lower piece, thereby realize autoloading, the degree of automation of device has been improved, and the machining efficiency is improved simultaneously.
The automatic feeding mechanism further comprises a third rotating shaft 28 which is connected with the vertical plate 2 in a penetrating and rotating mode through a bearing, one end of the third rotating shaft 28, which is located outside the two vertical plates 2, is in interference fit with a second belt wheel 29, one end of the second rotating shaft 24 is in interference fit with a first belt wheel 27, the first belt wheel 27 is matched with the second belt wheel 29 jointly through a synchronous belt 30, the second rotating shaft 24 rotates to drive the first belt wheel 27 to rotate, the second belt wheel 29 is driven to rotate through the synchronous belt 30, feeding is achieved, the third rotating shaft 28 synchronously rotates, synchronous material collection is achieved, and automatic material collection is achieved.
The polishing mechanism is arranged at the vertical plate 2 and comprises a hollow L-shaped block 35 with one open end, the L-shaped block 35 is fixedly connected with one vertical plate 2 in a penetrating way, the L-shaped block 35 is connected with a U-shaped block 39 and a sliding plate 36 in a sealing and sliding way, as shown in figure 3, polishing bristles are arranged on the opposite side walls of the U-shaped block 39, the U-shaped block 39 is connected with the corresponding vertical plate 2 in a penetrating way and sliding way, hydraulic oil is filled between the U-shaped block 39 and the sliding plate 36, a plurality of fourth springs 37 are fixedly connected between the sliding plate 36 and the inner bottom wall of the L-shaped block 35, a top column 38 is fixedly connected with the lower surface of the U-shaped block 39, the top column 38 is connected with the bottom wall of the L-shaped block 35 in a penetrating and sliding way, a sealing pad is arranged at the penetrating and sliding connection part of the top column 38 and the L-shaped block 35, so that the sealing inside of the L-shaped block 35 is ensured, the subsequent pumping and suction are convenient, and the side wall of one vertical plate 2 is fixedly connected with a sliding sleeve 32, a sliding column 33 is sleeved in the sliding sleeve 32 in a sealing and sliding manner, a plurality of third springs 34 are fixedly connected between the sliding column 33 and the sliding sleeve 32, three tooth blocks 31 are fixedly connected to the side wall of one second rotating shaft 24, the tooth blocks 31 are arc-shaped metal blocks provided with teeth, tooth-shaped protrusions and arc-shaped protrusions are arranged on the upper surface of the sliding column 33, the sliding column 33 is meshed with the tooth blocks 31 through the tooth-shaped protrusions, so that in the process of feeding the second rotating shaft 24 in a rotating manner, the tooth blocks 31 are meshed with the sliding column 33, the sliding column is driven to slide through the tooth blocks 31, when the sliding column is not meshed, the sliding column 33 resets under the elasticity of the third springs 34, so that the arc-shaped protrusions of the sliding column 33 are continuously contacted with and separated from the top columns 38, the sliding plate 36 reciprocates up and down in cooperation with the fourth springs 37, the sliding plate 36 is driven to reciprocate continuously through hydraulic oil, and the U-shaped blocks 39 are driven to polish the surface burrs through the polishing bristles on the surface, avoid follow-up manual processing's great intensity of labour, improve machining efficiency simultaneously.
The absorption mechanism is arranged at the position of the vertical plate 2 and comprises a hollow F-shaped block 40, the F-shaped block 40 is fixedly connected with one vertical plate 2 in a penetrating way, the side wall of one vertical plate 2 is fixedly connected with a storage box 41, the side wall of the storage box 41 is provided with a detachable filter screen, air can be discharged, impurities are remained in the storage box 41, the bottom wall of the F-shaped block 40 and the side wall of the L-shaped block 35 are fixedly connected with a first pipe 42 in a penetrating way, the bottom wall of the F-shaped block 40 and the end wall of the sliding sleeve 32 are fixedly connected with a fourth pipe in a penetrating way, the side wall of the L-shaped block 35 and the side wall of the storage box 41 are fixedly connected with a second pipe 43 in a penetrating way, the top wall of the sliding sleeve 32 and the side wall of the storage box 41 are fixedly connected with a third pipe 44 in a penetrating way, two opposite side walls of the F-shaped block 40 are both provided with absorption holes 46, the sliding plate 36 can move up and down and reciprocate as well as the left and right of the sliding column 33, and the sliding plate 36 is matched with the movement stroke of the sliding column 33, that is, when the sliding plate 36 moves upwards to pump air, the sliding column 33 moves rightwards to pump air, similarly, when the sliding plate 36 moves downwards to pump air, the sliding column 33 moves leftwards to pump air, so that in the reciprocating motion process of the sliding plate 36 and the sliding column 33, the F-shaped block 40 can always generate suction through the absorption holes 46, thereby ensuring that in the conveying process, the air is continuously pumped, particles on the surface of the alloy sheet are absorbed with impurities, and further effectively avoiding that the particles are wound together with the alloy sheet to cause surface damage and influence the performance and the appearance of the lead frame.
The lateral wall of the conveying roller 25 is provided with a rubber pad, the rubber pad can increase and alloy between the piece frictional force, thereby avoid in transportation process, the phenomenon of skidding appears, the size of second gear 23 is greater than the size of third gear 26, because the motion stroke of punching press piece 5 is limited, it can be so that the distance that the alloy piece carried is limited, through the setting of second gear 23 and third gear 26 size, can be in limited stroke, make the turned angle of third gear 26 increase, increase pay-off length, thereby better pay-off.
The first, second, third and fourth pipe members 42, 43, 44 and 45 are provided therein with check valves, the check valve in the first pipe member 42 allows only air from the F-block 40 to enter the L-block 35, the check valve in the second pipe member 43 allows only air from the L-block 35 to enter the storage tank 41, the check valve in the third pipe member 44 allows only air from the slide sleeve 32 to enter the storage tank 41, and the check valve in the fourth pipe member 45 allows only air from the F-block 40 to enter the slide sleeve 32.
The invention also provides a manufacturing method of the lead frame, which comprises the following steps:
s1, preparing raw materials: selecting alloy raw materials with proper thickness and hardness according to requirements;
s2, manufacturing by stamping: the raw material is placed between two conveying rollers 25, the device is started, and the hydraulic cylinder 4 drives the stamping head 10 to descend so as to stamp the raw material;
s3, flattening: when the alloy sheet after stamping is conveyed by a conveying roller 25, the raised edges generated after stamping are flattened;
s4, grinding and polishing: the alloy sheet flattened by the conveying roller 25 is conveyed forwards continuously, and burrs generated after stamping are polished and flattened through continuous reciprocating motion of the U-shaped block 40 when passing through the U-shaped block 40;
s5, winding: the alloy sheet after stamping, flattening, grinding and polishing is continuously wound under the rotation of the third rotating shaft 28;
s6, alkali washing: putting the punched and rolled material into a 40g/L sodium carbonate solution, washing oil on the surface of the material, and neutralizing an alkaline solution on the surface of the material by using a 50g/L acetic acid solution;
s7, drying: drying the lead frame subjected to alkali washing to evaporate the solution on the surface of the lead frame;
s8, cutting: and cutting the dried lead frame according to the required length.
The invention also provides a lead frame which is manufactured by using the manufacturing method.
In the invention, a raw material to be punched is placed between two conveying rollers 25, one end of the raw material is connected with a third rotating shaft 28, a hydraulic cylinder 4 is started, the hydraulic cylinder 4 extends out to drive a punching block 5 to move downwards, so that a punching head 10 moves downwards along with the downward movement, when the punching head 10 is contacted with the raw material, the punching head 10 drives a sliding block 8, a lower conductive block 9 and an upper conductive block 7 to slide upwards together under the action of a reaction force, a first spring 13 is compressed through a limiting block 12 at the same time until the punching block 5 is contacted with the punching head 10, the punching force is completely exerted to punch the raw material, the part contacted with the punching head 10 is punched at the moment of punching completion, the part is separated from the raw material and falls, meanwhile, the punching head 10 loses the reaction force instantly, under the elasticity of the first spring 13, the sliding block 8 drives the lower conductive block 9 to slide downwards for a small distance instantly, and the position of the upper conductive block 7 is not changed, so that the lower conductive block 9 is separated from the upper conductive block 7, the electromagnet 16 is powered off, the magnetic attraction force on the sliding metal plate 18 disappears, the sliding metal plate 18 is separated from the annular metal plate 17 under the elastic force of the second spring 19, and the hydraulic cylinder 4 is powered off and moves upwards to reset.
Pneumatic cylinder 4 in-process that resets, punching press piece 5 drives rack 20 up-and-down motion, thereby make and rack 20 in first gear 22 rotate, first gear 22 then drives second gear 23 through rather than interference fit's first pivot 21 and rotates, second gear 23 then drives rather than the third gear 26 rotation of meshing, the meshing of two rethread third gear 26, make two second pivots 24 rotate towards opposite direction, and then make two conveying rollers 25 rotate, carry raw and other materials, treat the region of punching press next and carry to punching press head 10 below, and simultaneously, regional process conveying roller 25 time of passing through after the punching press, can also flatten the warped edge that the punching press produced through conveying roller 25.
While being conveyed, when the punched raw material is flattened and then passes through the U-shaped block 39 and the F-shaped block 40, under the rotation of the second rotating shaft 24, the three tooth blocks 31 rotate together with the second rotating shaft, and through the meshing of the tooth blocks 31 and the tooth-shaped protrusions of the sliding column 33, when the toothed block 31 engages with the toothed projection, the sliding column 33 is moved, whereas when not engaged, under the elastic force of the third spring 34, the spool 33 is reset, so that the second rotating shaft 24 drives the spool 33 to reciprocate during the rotation, and during the reciprocating, when the arc-shaped projection of the slider column 33 comes into contact with the top column 38, the slider plate 36 moves upward, and when not in contact, the sliding plate 36 is restored by the elastic force of the fourth spring 37, so that the sliding plate 36 moves up and down, make U-shaped piece 39 reciprocating motion through hydraulic oil, the burr and the burr on the raw and other materials surface that the punching was accomplished are polished to the brush hair of polishing through U-shaped piece 39.
When the sliding plate 36 moves upwards, air is pumped through the first pipe 42, at the same time, the sliding column 33 moves rightwards to pump air through the third pipe 44, and the sucked air and impurities are pumped into the storage tank 41 for storage, and similarly, when the sliding plate 36 moves downwards to pump air through the second pipe 43, the sucked air and impurities are pumped into the storage tank 41 for storage, at the same time, the sliding column 33 moves leftwards to pump air through the fourth pipe 45, so that in the reciprocating motion process of the sliding plate 36 and the sliding column 33, namely in the conveying process, the F-shaped block 40 and the absorption holes 46 generate suction force continuously, and metal particles and impurities generated by polishing the surface of the alloy sheet are absorbed and pumped into the storage tank 41, the air is discharged through a filter screen on the side wall of the storage tank 41, and the impurities are blocked in the storage tank 41 periodically, and the interior of the alloy sheet can be cleaned.
In the conveying process, the second rotating shaft 24 rotates and simultaneously drives the first belt wheel 27 in interference fit with the second rotating shaft to rotate, and the first belt wheel 27 drives the second belt wheel 29 to rotate through the synchronous belt 30, so that the third rotating shaft 28 rotates, and the lead frame after stamping, flattening, polishing and impurity removal is wound.
After the punching block 5 is completely reset, under the setting of the fixed column 14, the upper conductive block 7 is synchronously pushed to reset, so that the upper conductive block 7 is contacted with the lower conductive block 9 again, the electromagnet 16 is electrified again, the sliding metal plate 18 is in contact with the annular metal plate 17 in a sliding manner under the action of magnetic attraction, the hydraulic cylinder 4 is electrified again and extends out, the next punching is carried out, and the operation is continued according to the steps after the punching is finished.
Claims (10)
1. The manufacturing device of the lead frame comprises a base (1), and is characterized in that two vertical plates (2) are fixed on the upper surface of the base (1), and a processing mechanism is fixed on the vertical plates (2); the processing mechanism comprises an installation block (3), the installation block (3) is fixedly connected with the side wall of a vertical plate (2), a hydraulic cylinder (4) is fixed on the upper surface of the installation block (3), an output shaft of the hydraulic cylinder (4) is connected with the installation block (3) in a penetrating and sliding manner and is fixed with a stamping block (5), two sliding grooves (6) are formed in the stamping block (5), an upper conductive block (7), a lower conductive block (9) and a sliding block (8) are connected in the sliding grooves (6) in a damping and sliding manner, the upper surface of the sliding block (8) is fixed with the lower surface of the lower conductive block (9), stamping heads (10) are jointly fixed on the lower surfaces of the two sliding blocks (8), an electric control cavity (15) is formed in the installation block (3), an electromagnet (16) is fixed on the inner end wall of the electric control cavity (15), the electromagnet (16), the upper conductive block (7) and the lower conductive block (9) are electrically connected, electric control chamber (15) inside wall is fixed with annular metal sheet (17), electric control chamber (15) inside wall sliding connection has slip metal sheet (18), be fixed with a plurality of first springs (13) between slip metal sheet (18) and electric control chamber (15) inner end wall, slip metal sheet (18), annular metal sheet (17), pneumatic cylinder (4) are connected through the wire electricity, surface mounting has rack (20) on installation piece (3), surface mounting has two fixed columns (14) under installation piece (3), fixed column (14) run through sliding connection and extend to corresponding with punching press piece (5) in sliding tray (6).
2. The lead frame manufacturing device according to claim 1, wherein an automatic feeding mechanism is arranged at the riser (2), the automatic feeding mechanism comprises two second rotating shafts (24) and a first rotating shaft (21) which are rotatably connected with the riser (2) through bearings in a penetrating manner, a section of the first rotating shaft (21) located between the two risers (2) is rotatably connected with a first gear (22) through a one-way bearing, the first gear (22) is meshed with the rack (20), one end of the first rotating shaft (21) located outside the two risers (2) is in interference fit with a second gear (23), one section of the second rotating shaft (24) located between the two risers (2) is in interference fit with a conveying roller (25), one section of the second rotating shaft (24) located outside the two risers (2) is in interference fit with a third gear (26), the two third gears (26) are meshed.
3. The lead frame manufacturing device according to claim 2, wherein the automatic feeding mechanism further comprises a third rotating shaft (28) which is rotatably connected with the vertical plates (2) through bearings, a second belt wheel (29) is in interference fit with one end of the third rotating shaft (28) which is positioned outside the two vertical plates (2), a first belt wheel (27) is in interference fit with one of the second rotating shafts (24), and a synchronous belt (30) is matched between the first belt wheel (27) and the second belt wheel (29).
4. The lead frame manufacturing device according to claim 3, wherein a polishing mechanism is arranged at the vertical plate (2), the polishing mechanism comprises a hollow L-shaped block (35) with one open end, the L-shaped block (35) is fixedly connected with one vertical plate (2) in a penetrating manner, the L-shaped block (35) is slidably connected with a U-shaped block (39) and a sliding plate (36) in a sealing manner, the U-shaped block (39) is slidably connected with the corresponding vertical plate (2) in a penetrating manner, hydraulic oil is filled between the U-shaped block (39) and the sliding plate (36), a plurality of fourth springs (37) are fixed between the sliding plate (36) and the bottom wall of the L-shaped block (35), a top column (38) is fixed on the lower surface of the U-shaped block (39), the top column (38) is slidably connected with the bottom wall of the L-shaped block (35) in a penetrating manner, and a sliding sleeve (32) is fixed on one side wall of the vertical plate (2), sliding column (33) has been cup jointed in sliding sleeve (32) internal seal slip, be fixed with a plurality of third springs (34) between sliding column (33) and sliding sleeve (32), one of them second pivot (24) lateral wall is fixed with three tooth piece (31), sliding column (33) upper surface is provided with dentate arch and arc arch, sliding column (33) and tooth piece (31) meshing.
5. The lead frame manufacturing device according to claim 4, wherein a suction mechanism is provided at the riser (2), the absorption mechanism comprises a hollow F-shaped block (40), the F-shaped block (40) is fixedly connected with one of the vertical plates (2) in a penetrating way, a storage box (41) is fixed on one side wall of the vertical plate (2), a first pipe piece (42) is fixed on the bottom wall of the F-shaped block (40) and the side wall of the L-shaped block (35) in a penetrating way, a fourth pipe fitting is fixedly penetrated through the bottom wall of the F-shaped block (40) and the end wall of the sliding sleeve (32), a second pipe (43) is fixed on the side wall of the L-shaped block (35) and the side wall of the storage tank (41) in a penetrating way, a third pipe (44) is fixed on the top wall of the sliding sleeve (32) and the side wall of the storage tank (41) in a penetrating way, and two opposite side walls of the F-shaped block (40) are provided with absorption holes (46).
6. Lead frame manufacturing device according to claim 5, characterized in that the side walls of the conveyor rollers (25) are provided with rubber pads, and the second gear (23) is larger in size than the third gear (26).
7. The manufacturing device of the lead frame according to claim 6, characterized in that a limiting groove (11) is formed in the inner side wall of the sliding groove (6), a limiting block (12) is connected in the limiting groove (11) in a sliding mode, a first spring (13) is fixed between the top wall in the limiting block (12) and the limiting groove (11), and the limiting block (12) is fixedly connected with the corresponding side wall of the sliding block (8).
8. The lead frame manufacturing device according to claim 7, characterized in that the first tube (42), the second tube (43), the third tube (44) and the fourth tube (45) are all provided with one-way valves therein.
9. A manufacturing method of a manufacturing apparatus using the lead frame according to any of claims 1 to 8, comprising the steps of:
s1, preparing raw materials: selecting alloy raw materials with proper thickness and hardness according to requirements;
s2, manufacturing by stamping: the raw material is placed between two conveying rollers (25), the device is started, and the hydraulic cylinder (4) drives the stamping head (10) to descend to stamp the raw material;
s3, flattening: when the alloy sheet after stamping is conveyed by a conveying roller (25), the raised edges generated after stamping are flattened;
s4, grinding and polishing: the alloy sheet flattened by the conveying roller (25) is conveyed forwards continuously, and burrs generated after stamping are polished and flattened through continuous reciprocating motion of the U-shaped block (40) when passing through the U-shaped block (40);
s5, winding: the alloy sheet after stamping, flattening, grinding and polishing is continuously wound under the rotation of a third rotating shaft (28);
s6, alkali washing: putting the punched and rolled material into a 40g/L sodium carbonate solution, washing oil on the surface of the material, and neutralizing an alkaline solution on the surface of the material by using a 50g/L acetic acid solution;
s7, drying: drying the lead frame subjected to alkali washing to evaporate the solution on the surface of the lead frame;
s8, cutting: and cutting the dried lead frame according to the required length.
10. A lead frame manufactured by the manufacturing method according to claim 9.
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| CN202210930033.0A CN114986165B (en) | 2022-08-04 | 2022-08-04 | Apparatus and method for manufacturing lead frame, and lead frame |
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| CN202210930033.0A CN114986165B (en) | 2022-08-04 | 2022-08-04 | Apparatus and method for manufacturing lead frame, and lead frame |
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| CN115351130A (en) * | 2022-10-20 | 2022-11-18 | 宁波德洲精密电子有限公司 | Automatic leveling equipment for lead frame |
| CN115608834A (en) * | 2022-12-15 | 2023-01-17 | 宁波德洲精密电子有限公司 | Processing equipment and processing method of anti-delamination lead frame and anti-delamination lead frame |
| CN115647111A (en) * | 2022-12-29 | 2023-01-31 | 宁波德洲精密电子有限公司 | Lead frame punching press material collecting device |
| CN115990637A (en) * | 2023-03-24 | 2023-04-21 | 江苏常意电机科技有限公司 | High-speed punching machine for machining motor stator and machining process |
| CN116603920A (en) * | 2023-07-20 | 2023-08-18 | 四川金湾电子有限责任公司 | Stamping and unhairing integrated equipment for semiconductor lead frame |
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| CN116603920A (en) * | 2023-07-20 | 2023-08-18 | 四川金湾电子有限责任公司 | Stamping and unhairing integrated equipment for semiconductor lead frame |
| CN116603920B (en) * | 2023-07-20 | 2023-09-22 | 四川金湾电子有限责任公司 | Stamping and unhairing integrated equipment for semiconductor lead frame |
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